HALVORSEN OLE ANDREAS

SEC source: 0001140361-22-001654 · form4.xml · nonDerivative · entry 2

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

Viking Global Opportunities Parent GP LLC · CIK 0001886738 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 2,300,000

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities Parent GP LLC ("Parent"), which is the sole member of Viking Global Opportunities GP LLC ("Opportunities GP"), which is the sole member of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds and vehicles, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund") and DRAGSA 96 LLC ("DRAGSA 96"). Each of VGI, Parent, Opportunities GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own all of the securities reported on this form.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

F6 · ownership.nature: These shares are held directly by DRAGSA 96. Because of the relationship between VGI and DRAGSA 96, VGI may be deemed to beneficially own the shares held directly by DRAGSA 96.

F7 · ownership.nature: The membership interests of DRAGSA 96 are held by Viking Global Opportunities Intermediate LP and Viking Global Opportunities LP. Opportunities GP is the general partner of Viking Global Opportunities Intermediate LP and Viking Global Opportunities LP. Because of the relationship between Parent, Opportunities GP and DRAGSA 96, each of Parent and Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by DRAGSA 96.

SEC source: 0001140361-22-001654 · form4.xml · nonDerivative · entry 1

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

Viking Global Opportunities Parent GP LLC · CIK 0001886738 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 4,870,536

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · price: Each share of Series C-1 preferred stock was convertible on a one-for-one basis into Common Stock at any time at the election of the Reporting Persons and automatically converted upon the closing of the Issuer's initial public offering into the number of shares of the Issuer's Common Stock shown in column 3 of Table II without payment or further consideration. The Series C-1 Preferred stock had no expiration date.

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities Parent GP LLC ("Parent"), which is the sole member of Viking Global Opportunities GP LLC ("Opportunities GP"), which is the sole member of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds and vehicles, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund") and DRAGSA 96 LLC ("DRAGSA 96"). Each of VGI, Parent, Opportunities GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own all of the securities reported on this form.

F2 · ownership.nature: These shares are held directly by Opportunities Fund. Because of the relationship between VGI and Opportunities Fund, VGI may be deemed to beneficially own the shares held directly by Opportunities Fund.

F3 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Parent, Opportunities GP, Opportunities Portfolio GP and Opportunities Fund, each of Parent, Opportunities GP and Opportunities Portfolio GP may be deemed to beneficially own the shares held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001387131-22-000095 · api010322.xml · derivative · entry 2

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

VIKING GLOBAL PERFORMANCE LLC · CIK 0001132625 · 10% owner

Viking Global Equities II LP · CIK 0001413378 · 10% owner

Viking Global Equities Master Ltd. · CIK 0001759530 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by Viking Global Equities II LP

Disclosed balance after: 4,000

Underlying: Common Stock · 162,602 shares

Expires not disclosed

F1 · derivative.exercise_date: The 5.5% Series B Perpetual Convertible Preferred Stock ("Series B Preferred Stock") has no expiration date and is convertible at any time at the option of the holder, or the Issuer may, at its option, effect conversion of all, but not less than all, of the outstanding shares of Series B Preferred Stock to Issuer common stock, par value $0.0001 per share ("Common Stock"), but only if the volume-weighted average price of the Common Stock (determined as provided in the Series B Certificate of Designation) for 15 consecutive trading days exceeds 150% of the conversion price equal to $24.60 per share (subject to certain customary adjustments in the event of certain events affecting the price of the common stock).

F1 · derivative.expiration_date: The 5.5% Series B Perpetual Convertible Preferred Stock ("Series B Preferred Stock") has no expiration date and is convertible at any time at the option of the holder, or the Issuer may, at its option, effect conversion of all, but not less than all, of the outstanding shares of Series B Preferred Stock to Issuer common stock, par value $0.0001 per share ("Common Stock"), but only if the volume-weighted average price of the Common Stock (determined as provided in the Series B Certificate of Designation) for 15 consecutive trading days exceeds 150% of the conversion price equal to $24.60 per share (subject to certain customary adjustments in the event of certain events affecting the price of the common stock).

F2 · derivative.underlying_shares: Each share of Series B Preferred Stock will be convertible at the option of the holder into a whole number of shares of Common Stock, determined by dividing the sum of $1,000 per share of Series B Preferred Stock and any accrued and unpaid quarterly dividends thereon on the conversion date by the then-applicable conversion price except that such conversion is not permitted if a "Fundamental Change" repurchase notice has been delivered with respect to such share or shares (subject to certain exceptions), such share or shares have been called for redemption (subject to certain exceptions), such share or shares are subject to a mandatory conversion and such notice and surrender is submitted after the close of business on the business day immediately prior to the mandatory conversion date or the Company does not have sufficient authorized and unissued and unreserved shares of common stock to effect such conversion.

F3 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of Viking Global Partners LLC ("Global Partners") and Viking Global Performance LLC ("VGP"). Global Partners is the general partner of Viking Global Investors LP ("VGI"). VGI provides managerial services to Viking Global Equities Master Ltd. ("VGEM") and Viking Global Equities II LP ("VGEII"). In addition, VGP is the general partner to VGEII and investment manager to VGEM. Each of Global Partners, VGP, VGI, VGEM, VGEII, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own the securities reported on this form.

F4 · ownership.nature: VGI provides managerial services to VGEM, which directly holds 196,000 shares of Series B Preferred Stock, and VGEII which directly holds 4,000 shares of Series B Preferred Stock. Because of the relationship between VGI, VGEM and VGEII, VGI may be deemed to beneficially own the shares of Series B Preferred Stock held directly by VGEM and VGEII.

F5 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001387131-22-000095 · api010322.xml · derivative · entry 1

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

VIKING GLOBAL PERFORMANCE LLC · CIK 0001132625 · 10% owner

Viking Global Equities II LP · CIK 0001413378 · 10% owner

Viking Global Equities Master Ltd. · CIK 0001759530 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by Viking Global Equities Master Ltd.

Disclosed balance after: 196,000

Underlying: Common Stock · 7,967,479 shares

Expires not disclosed

F1 · derivative.exercise_date: The 5.5% Series B Perpetual Convertible Preferred Stock ("Series B Preferred Stock") has no expiration date and is convertible at any time at the option of the holder, or the Issuer may, at its option, effect conversion of all, but not less than all, of the outstanding shares of Series B Preferred Stock to Issuer common stock, par value $0.0001 per share ("Common Stock"), but only if the volume-weighted average price of the Common Stock (determined as provided in the Series B Certificate of Designation) for 15 consecutive trading days exceeds 150% of the conversion price equal to $24.60 per share (subject to certain customary adjustments in the event of certain events affecting the price of the common stock).

F1 · derivative.expiration_date: The 5.5% Series B Perpetual Convertible Preferred Stock ("Series B Preferred Stock") has no expiration date and is convertible at any time at the option of the holder, or the Issuer may, at its option, effect conversion of all, but not less than all, of the outstanding shares of Series B Preferred Stock to Issuer common stock, par value $0.0001 per share ("Common Stock"), but only if the volume-weighted average price of the Common Stock (determined as provided in the Series B Certificate of Designation) for 15 consecutive trading days exceeds 150% of the conversion price equal to $24.60 per share (subject to certain customary adjustments in the event of certain events affecting the price of the common stock).

F2 · derivative.underlying_shares: Each share of Series B Preferred Stock will be convertible at the option of the holder into a whole number of shares of Common Stock, determined by dividing the sum of $1,000 per share of Series B Preferred Stock and any accrued and unpaid quarterly dividends thereon on the conversion date by the then-applicable conversion price except that such conversion is not permitted if a "Fundamental Change" repurchase notice has been delivered with respect to such share or shares (subject to certain exceptions), such share or shares have been called for redemption (subject to certain exceptions), such share or shares are subject to a mandatory conversion and such notice and surrender is submitted after the close of business on the business day immediately prior to the mandatory conversion date or the Company does not have sufficient authorized and unissued and unreserved shares of common stock to effect such conversion.

F3 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of Viking Global Partners LLC ("Global Partners") and Viking Global Performance LLC ("VGP"). Global Partners is the general partner of Viking Global Investors LP ("VGI"). VGI provides managerial services to Viking Global Equities Master Ltd. ("VGEM") and Viking Global Equities II LP ("VGEII"). In addition, VGP is the general partner to VGEII and investment manager to VGEM. Each of Global Partners, VGP, VGI, VGEM, VGEII, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own the securities reported on this form.

F4 · ownership.nature: VGI provides managerial services to VGEM, which directly holds 196,000 shares of Series B Preferred Stock, and VGEII which directly holds 4,000 shares of Series B Preferred Stock. Because of the relationship between VGI, VGEM and VGEII, VGI may be deemed to beneficially own the shares of Series B Preferred Stock held directly by VGEM and VGEII.

F5 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001567619-21-017393 · doc1.xml · derivative · entry 7

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

DRAGSA 88 LLC · CIK 0001883348 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation Responses

Disclosed balance after: 0

Underlying: Common Stock · 113,737 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F7 · derivative.exercise_price: The Series G Preferred Units were convertible into shares of Common Stock on a 1:1 basis, at the Reporting Person's election, without payment of further consideration, and automatically converted immediately prior to the Closing. The shares had no expiration date.

F7 · derivative.exercise_date: The Series G Preferred Units were convertible into shares of Common Stock on a 1:1 basis, at the Reporting Person's election, without payment of further consideration, and automatically converted immediately prior to the Closing. The shares had no expiration date.

F7 · derivative.expiration_date: The Series G Preferred Units were convertible into shares of Common Stock on a 1:1 basis, at the Reporting Person's election, without payment of further consideration, and automatically converted immediately prior to the Closing. The shares had no expiration date.

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds and vehicles, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund") and DRAGSA 88 LLC ("DRAGSA 88"). Each of VGI, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own all of the securities reported on this form.

F2 · ownership.nature: These shares are held directly by Opportunities Fund. VGI provides managerial services to Opportunities Fund. Because of the relationship between VGI and Opportunities Fund, VGI may be deemed to beneficially own the shares held directly by Opportunities Fund.

F3 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001567619-21-017393 · doc1.xml · derivative · entry 6

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

DRAGSA 88 LLC · CIK 0001883348 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation Responses

Disclosed balance after: 0

Underlying: Common Stock · 678,985 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_price: The Series F Preferred Units were convertible into shares of Common Stock on a 1:1 basis, at the Reporting Person's election, without payment of further consideration, and automatically converted immediately prior to the Closing. The shares had no expiration date.

F6 · derivative.exercise_date: The Series F Preferred Units were convertible into shares of Common Stock on a 1:1 basis, at the Reporting Person's election, without payment of further consideration, and automatically converted immediately prior to the Closing. The shares had no expiration date.

F6 · derivative.expiration_date: The Series F Preferred Units were convertible into shares of Common Stock on a 1:1 basis, at the Reporting Person's election, without payment of further consideration, and automatically converted immediately prior to the Closing. The shares had no expiration date.

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds and vehicles, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund") and DRAGSA 88 LLC ("DRAGSA 88"). Each of VGI, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own all of the securities reported on this form.

F2 · ownership.nature: These shares are held directly by Opportunities Fund. VGI provides managerial services to Opportunities Fund. Because of the relationship between VGI and Opportunities Fund, VGI may be deemed to beneficially own the shares held directly by Opportunities Fund.

F3 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001567619-21-017393 · doc1.xml · derivative · entry 5

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

DRAGSA 88 LLC · CIK 0001883348 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation Responses

Disclosed balance after: 0

Underlying: Common Stock · 3,407,028 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: The Series E Preferred Units were convertible into shares of Common Stock on a 1:1 basis, at the Reporting Person's election, without payment of further consideration, and automatically converted immediately prior to the closing of the initial public offering (the "Closing") of PROCEPT BioRobotics Corp (the "Issuer"). The shares had no expiration date.

F5 · derivative.exercise_date: The Series E Preferred Units were convertible into shares of Common Stock on a 1:1 basis, at the Reporting Person's election, without payment of further consideration, and automatically converted immediately prior to the closing of the initial public offering (the "Closing") of PROCEPT BioRobotics Corp (the "Issuer"). The shares had no expiration date.

F5 · derivative.expiration_date: The Series E Preferred Units were convertible into shares of Common Stock on a 1:1 basis, at the Reporting Person's election, without payment of further consideration, and automatically converted immediately prior to the closing of the initial public offering (the "Closing") of PROCEPT BioRobotics Corp (the "Issuer"). The shares had no expiration date.

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds and vehicles, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund") and DRAGSA 88 LLC ("DRAGSA 88"). Each of VGI, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own all of the securities reported on this form.

F2 · ownership.nature: These shares are held directly by Opportunities Fund. VGI provides managerial services to Opportunities Fund. Because of the relationship between VGI and Opportunities Fund, VGI may be deemed to beneficially own the shares held directly by Opportunities Fund.

F3 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001567619-21-017393 · doc1.xml · nonDerivative · entry 4

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

DRAGSA 88 LLC · CIK 0001883348 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 400,000

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds and vehicles, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund") and DRAGSA 88 LLC ("DRAGSA 88"). Each of VGI, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own all of the securities reported on this form.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

F8 · ownership.nature: These shares are held directly by DRAGSA 88. VGI provides managerial services to DRAGSA 88. Because of the relationship between VGI and DRAGSA 88, VGI may be deemed to beneficially own the shares held directly by DRAGSA 88.

F9 · ownership.nature: The membership interests of DRAGSA 88 are held by Viking Global Opportunities Intermediate LP and Viking Global Opportunities LP. Opportunities GP is the general partner of Viking Global Opportunities LP and Viking Global Opportunities Intermediate LP. Because of the relationship between Opportunities GP and DRAGSA 88, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by DRAGSA 88.

SEC source: 0001567619-21-017393 · doc1.xml · nonDerivative · entry 3

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

DRAGSA 88 LLC · CIK 0001883348 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 4,507,892

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F7 · price: The Series G Preferred Units were convertible into shares of Common Stock on a 1:1 basis, at the Reporting Person's election, without payment of further consideration, and automatically converted immediately prior to the Closing. The shares had no expiration date.

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds and vehicles, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund") and DRAGSA 88 LLC ("DRAGSA 88"). Each of VGI, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own all of the securities reported on this form.

F2 · ownership.nature: These shares are held directly by Opportunities Fund. VGI provides managerial services to Opportunities Fund. Because of the relationship between VGI and Opportunities Fund, VGI may be deemed to beneficially own the shares held directly by Opportunities Fund.

F3 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001567619-21-017393 · doc1.xml · nonDerivative · entry 2

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

DRAGSA 88 LLC · CIK 0001883348 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 4,394,155

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · price: The Series F Preferred Units were convertible into shares of Common Stock on a 1:1 basis, at the Reporting Person's election, without payment of further consideration, and automatically converted immediately prior to the Closing. The shares had no expiration date.

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds and vehicles, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund") and DRAGSA 88 LLC ("DRAGSA 88"). Each of VGI, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own all of the securities reported on this form.

F2 · ownership.nature: These shares are held directly by Opportunities Fund. VGI provides managerial services to Opportunities Fund. Because of the relationship between VGI and Opportunities Fund, VGI may be deemed to beneficially own the shares held directly by Opportunities Fund.

F3 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001567619-21-017393 · doc1.xml · nonDerivative · entry 1

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

DRAGSA 88 LLC · CIK 0001883348 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 3,715,170

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · price: The Series E Preferred Units were convertible into shares of Common Stock on a 1:1 basis, at the Reporting Person's election, without payment of further consideration, and automatically converted immediately prior to the closing of the initial public offering (the "Closing") of PROCEPT BioRobotics Corp (the "Issuer"). The shares had no expiration date.

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds and vehicles, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund") and DRAGSA 88 LLC ("DRAGSA 88"). Each of VGI, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own all of the securities reported on this form.

F2 · ownership.nature: These shares are held directly by Opportunities Fund. VGI provides managerial services to Opportunities Fund. Because of the relationship between VGI and Opportunities Fund, VGI may be deemed to beneficially own the shares held directly by Opportunities Fund.

F3 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001567619-21-016763 · doc1.xml · nonDerivative · entry 2

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation Responses

Disclosed balance after: 14,742,689

F6 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $44.67 to $46.07.

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund"). Each of VGI, Opportunities GP, Opportunities Portfolio GP, VGOL, Opportunities Fund, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F2 · ownership.nature: VGI provides managerial services to Opportunities Fund, which directly holds the shares of Common Stock reported herein. Because of the relationship between VGI and VGOP, VGI may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F3 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001567619-21-016763 · doc1.xml · nonDerivative · entry 1

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation Responses

Disclosed balance after: 14,785,102

F5 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $45.39 to $48.34. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnotes (5) and (6).

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund"). Each of VGI, Opportunities GP, Opportunities Portfolio GP, VGOL, Opportunities Fund, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F2 · ownership.nature: VGI provides managerial services to Opportunities Fund, which directly holds the shares of Common Stock reported herein. Because of the relationship between VGI and VGOP, VGI may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F3 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001387131-21-007995 · ownership.xml · derivative · entry 3

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 0

Underlying: Common Stock · 3,388,777 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: The Series B Preferred Units were convertible into Common Stock on a 1:0.157 basis into the number of shares of Common Stock at the Reporting Person's election and were automatically converted upon the closing of the initial public offering of Rallybio Corporation (the "Issuer"). The shares had no expiration date.

F5 · price: The Series B Preferred Units were convertible into Common Stock on a 1:0.157 basis into the number of shares of Common Stock at the Reporting Person's election and were automatically converted upon the closing of the initial public offering of Rallybio Corporation (the "Issuer"). The shares had no expiration date.

F5 · derivative.exercise_date: The Series B Preferred Units were convertible into Common Stock on a 1:0.157 basis into the number of shares of Common Stock at the Reporting Person's election and were automatically converted upon the closing of the initial public offering of Rallybio Corporation (the "Issuer"). The shares had no expiration date.

F5 · derivative.expiration_date: The Series B Preferred Units were convertible into Common Stock on a 1:0.157 basis into the number of shares of Common Stock at the Reporting Person's election and were automatically converted upon the closing of the initial public offering of Rallybio Corporation (the "Issuer"). The shares had no expiration date.

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund"). Each of VGI, Opportunities GP, Opportunities Portfolio GP, Opportunities Fund, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F2 · ownership.nature: On July 27, 2021, Opportunities Fund acquired 806,000 shares of common stock of the Issuer ("Common Stock") at a price of $13.00 per share in connection with the Issuer's (as defined below) initial public offering. VGI provides managerial services to Opportunities Fund, which directly holds the 4,194,777 shares of Common Stock reported herein. Because of the relationship between VGI and VGOP, VGI may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F3 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001387131-21-007995 · ownership.xml · nonDerivative · entry 2

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation Responses

Disclosed balance after: 4,194,777

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund"). Each of VGI, Opportunities GP, Opportunities Portfolio GP, Opportunities Fund, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F2 · ownership.nature: On July 27, 2021, Opportunities Fund acquired 806,000 shares of common stock of the Issuer ("Common Stock") at a price of $13.00 per share in connection with the Issuer's (as defined below) initial public offering. VGI provides managerial services to Opportunities Fund, which directly holds the 4,194,777 shares of Common Stock reported herein. Because of the relationship between VGI and VGOP, VGI may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F3 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001387131-21-007995 · ownership.xml · nonDerivative · entry 1

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation Responses

Disclosed balance after: 3,388,777

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · price: The Series B Preferred Units were convertible into Common Stock on a 1:0.157 basis into the number of shares of Common Stock at the Reporting Person's election and were automatically converted upon the closing of the initial public offering of Rallybio Corporation (the "Issuer"). The shares had no expiration date.

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund"). Each of VGI, Opportunities GP, Opportunities Portfolio GP, Opportunities Fund, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F2 · ownership.nature: On July 27, 2021, Opportunities Fund acquired 806,000 shares of common stock of the Issuer ("Common Stock") at a price of $13.00 per share in connection with the Issuer's (as defined below) initial public offering. VGI provides managerial services to Opportunities Fund, which directly holds the 4,194,777 shares of Common Stock reported herein. Because of the relationship between VGI and VGOP, VGI may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F3 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001387131-20-011272 · fdmt-form4_121520.xml · derivative · entry 5

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 0

Underlying: Common Stock · 833,333 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_price: The Series C Redeemable Convertible Preferred Stock were convertible into Common Stock on a one-for-one basis into the number of shares of Common Stock at the Reporting Person's election and were automatically converted upon the closing of the initial public offering of the Issuer. The shares had no expiration date.

F6 · price: The Series C Redeemable Convertible Preferred Stock were convertible into Common Stock on a one-for-one basis into the number of shares of Common Stock at the Reporting Person's election and were automatically converted upon the closing of the initial public offering of the Issuer. The shares had no expiration date.

F6 · derivative.exercise_date: The Series C Redeemable Convertible Preferred Stock were convertible into Common Stock on a one-for-one basis into the number of shares of Common Stock at the Reporting Person's election and were automatically converted upon the closing of the initial public offering of the Issuer. The shares had no expiration date.

F6 · derivative.expiration_date: The Series C Redeemable Convertible Preferred Stock were convertible into Common Stock on a one-for-one basis into the number of shares of Common Stock at the Reporting Person's election and were automatically converted upon the closing of the initial public offering of the Issuer. The shares had no expiration date.

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund"). Each of VGI, Opportunities GP, Opportunities Portfolio GP, VGOL, Opportunities Fund, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F2 · ownership.nature: On December 15, 2020, Opportunities Fund acquired 1,100,000 shares of common stock of the Issuer ("Common Stock") at a price of $23.00 per share in connection with the Issuer's (as defined below) initial public offering. VGI provides managerial services to Opportunities Fund, which directly holds the 3,937,914 shares of Common Stock reported herein. Because of the relationship between VGI and VGOP, VGI may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F3 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001387131-20-011272 · fdmt-form4_121520.xml · derivative · entry 4

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 0

Underlying: Common Stock · 2,004,581 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: The Series B Redeemable Convertible Preferred Stock were convertible into Common Stock on a one-for-one basis into the number of shares of Common Stock at the Reporting Person's election and were automatically converted upon the closing of the initial public offering of 4D Molecular Therapeutics, Inc. (the "Issuer"). The shares had no expiration date.

F5 · price: The Series B Redeemable Convertible Preferred Stock were convertible into Common Stock on a one-for-one basis into the number of shares of Common Stock at the Reporting Person's election and were automatically converted upon the closing of the initial public offering of 4D Molecular Therapeutics, Inc. (the "Issuer"). The shares had no expiration date.

F5 · derivative.exercise_date: The Series B Redeemable Convertible Preferred Stock were convertible into Common Stock on a one-for-one basis into the number of shares of Common Stock at the Reporting Person's election and were automatically converted upon the closing of the initial public offering of 4D Molecular Therapeutics, Inc. (the "Issuer"). The shares had no expiration date.

F5 · derivative.expiration_date: The Series B Redeemable Convertible Preferred Stock were convertible into Common Stock on a one-for-one basis into the number of shares of Common Stock at the Reporting Person's election and were automatically converted upon the closing of the initial public offering of 4D Molecular Therapeutics, Inc. (the "Issuer"). The shares had no expiration date.

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund"). Each of VGI, Opportunities GP, Opportunities Portfolio GP, VGOL, Opportunities Fund, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F2 · ownership.nature: On December 15, 2020, Opportunities Fund acquired 1,100,000 shares of common stock of the Issuer ("Common Stock") at a price of $23.00 per share in connection with the Issuer's (as defined below) initial public offering. VGI provides managerial services to Opportunities Fund, which directly holds the 3,937,914 shares of Common Stock reported herein. Because of the relationship between VGI and VGOP, VGI may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F3 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001387131-20-011272 · fdmt-form4_121520.xml · nonDerivative · entry 3

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation Responses

Disclosed balance after: 3,937,914

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund"). Each of VGI, Opportunities GP, Opportunities Portfolio GP, VGOL, Opportunities Fund, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F2 · ownership.nature: On December 15, 2020, Opportunities Fund acquired 1,100,000 shares of common stock of the Issuer ("Common Stock") at a price of $23.00 per share in connection with the Issuer's (as defined below) initial public offering. VGI provides managerial services to Opportunities Fund, which directly holds the 3,937,914 shares of Common Stock reported herein. Because of the relationship between VGI and VGOP, VGI may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F3 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001387131-20-011272 · fdmt-form4_121520.xml · nonDerivative · entry 2

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation Responses

Disclosed balance after: 2,837,914

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · price: The Series C Redeemable Convertible Preferred Stock were convertible into Common Stock on a one-for-one basis into the number of shares of Common Stock at the Reporting Person's election and were automatically converted upon the closing of the initial public offering of the Issuer. The shares had no expiration date.

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund"). Each of VGI, Opportunities GP, Opportunities Portfolio GP, VGOL, Opportunities Fund, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F2 · ownership.nature: On December 15, 2020, Opportunities Fund acquired 1,100,000 shares of common stock of the Issuer ("Common Stock") at a price of $23.00 per share in connection with the Issuer's (as defined below) initial public offering. VGI provides managerial services to Opportunities Fund, which directly holds the 3,937,914 shares of Common Stock reported herein. Because of the relationship between VGI and VGOP, VGI may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F3 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001387131-20-011272 · fdmt-form4_121520.xml · nonDerivative · entry 1

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation Responses

Disclosed balance after: 2,004,581

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · price: The Series B Redeemable Convertible Preferred Stock were convertible into Common Stock on a one-for-one basis into the number of shares of Common Stock at the Reporting Person's election and were automatically converted upon the closing of the initial public offering of 4D Molecular Therapeutics, Inc. (the "Issuer"). The shares had no expiration date.

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund"). Each of VGI, Opportunities GP, Opportunities Portfolio GP, VGOL, Opportunities Fund, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F2 · ownership.nature: On December 15, 2020, Opportunities Fund acquired 1,100,000 shares of common stock of the Issuer ("Common Stock") at a price of $23.00 per share in connection with the Issuer's (as defined below) initial public offering. VGI provides managerial services to Opportunities Fund, which directly holds the 3,937,914 shares of Common Stock reported herein. Because of the relationship between VGI and VGOP, VGI may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

SEC source: 0001387131-20-011164 · adpt-form4_121420.xml · nonDerivative · entry 1

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

VIKING GLOBAL PERFORMANCE LLC · CIK 0001132625 · 10% owner

Viking Global Equities II LP · CIK 0001413378 · 10% owner

Viking Global Equities Master Ltd. · CIK 0001759530 · 10% owner

Viking Long Fund GP LLC · CIK 0001621607 · 10% owner

Viking Long Fund Master Ltd. · CIK 0001621596 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 29,993,708

F1 · shares: On December 14, 2020, the Viking Funds (defined below) sold an aggregate of 1,000,000 shares of common stock of the Issuer ("Common Stock") at a price of $55.65 per share.VGE II sold 14,671 shares, VGEM sold 718,897 shares and VLFM sold 266,432 shares.

F2 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP") and Viking Long Fund GP LLC ("VLFGP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II") and Viking Global Equities Master Ltd. ("VGEM") and Viking Long Fund Master Ltd. ("VLFM" and together with VLFM, VGEM and VGE II, the "Viking Funds").

F3 · ownership.nature: VGP is the general partner of VGE II. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F4 · ownership.nature: VGI provides managerial services to (i) VGE II, which directly holds 454,717 shares of Common Stock; (ii) VGEM, which directly holds 22,281,040 shares of Common Stock; and (iii) VLFM, which directly holds 8,257,951 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F5 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F6 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F7 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0001387131-20-010443 · ownership.xml · nonDerivative · entry 1

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 3,943,284

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund"). Each of VGI, Opportunities GP, Opportunities Portfolio GP, VGOL, Opportunities Fund, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F2 · ownership.nature: On December 1, 2020, Opportunities Fund sold 500,000 shares of common stock of the Issuer ("Common Stock") at a price of $50.50 per share. VGI provides managerial services to Opportunities Fund, which directly holds the 3,943,284 shares of Common Stock reported herein. Because of the relationship between VGI and VGOP, VGI may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F3 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001387131-20-009937 · ownership.xml · nonDerivative · entry 1

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 30,993,708

F1 · shares: On November 11, 2020, the Viking Funds (defined below) sold an aggregate of 2,500,000 shares of common stock of the Issuer ("Common Stock") at a price of $49.5150 per share.VGE II sold 18,326 shares, VGEM sold 897,994 shares, VLFM sold 332,821 shares and Opportunities Fund sold 1,250,859 shares.

F2 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F3 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F4 · ownership.nature: VGI provides managerial services to (i) VGE II, which directly holds 454,717 shares of Common Stock; (ii) VGEM, which directly holds 22,281,040 shares of Common Stock; (iii) VLFM, which directly holds 8,257,951 shares of Common Stock; and (iv) Opportunities Fund, which does not directly hold shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F5 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F6 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F7 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F8 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose. Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

SEC source: 0001387131-20-009936 · ownership.xml · nonDerivative · entry 1

VIKING GLOBAL PERFORMANCE LLC · CIK 0001132625 · 10% owner

Viking Global Equities II LP · CIK 0001413378 · 10% owner

Viking Global Equities Master Ltd. · CIK 0001759530 · 10% owner

Viking Long Fund GP LLC · CIK 0001621607 · 10% owner

Viking Long Fund Master Ltd. · CIK 0001621596 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 30,993,708

F1 · shares: On November 11, 2020, the Viking Funds (defined below) sold an aggregate of 2,500,000 shares of common stock of the Issuer ("Common Stock") at a price of $49.5150 per share.VGE II sold 18,326 shares, VGEM sold 897,994 shares, VLFM sold 332,821 shares and Opportunities Fund sold 1,250,859 shares.

F2 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F3 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F4 · ownership.nature: VGI provides managerial services to (i) VGE II, which directly holds 454,717 shares of Common Stock; (ii) VGEM, which directly holds 22,281,040 shares of Common Stock; (iii) VLFM, which directly holds 8,257,951 shares of Common Stock; and (iv) Opportunities Fund, which does not directly hold shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F5 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F6 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F7 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F8 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0001387131-20-008019 · ownership.xml · nonDerivative · entry 2

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

DRAGSA 50 LLC · CIK 0001822130 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 1,427,307

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds and vehicles, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund"), DRAGSA 49 LLC ("DRAGSA 49") and DRAGSA 50 LLC ("DRAGSA 50"). Each of VGI, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own all of the securities reported on this form.

F2 · ownership.nature: These shares of Common Stock are held directly by Opportunities Fund. Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001387131-20-008019 · ownership.xml · nonDerivative · entry 1

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

DRAGSA 50 LLC · CIK 0001822130 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 1,327,307

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds and vehicles, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund"), DRAGSA 49 LLC ("DRAGSA 49") and DRAGSA 50 LLC ("DRAGSA 50"). Each of VGI, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own all of the securities reported on this form.

F2 · ownership.nature: These shares of Common Stock are held directly by Opportunities Fund. Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001387131-20-007889 · ownership.xml · nonDerivative · entry 3

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

DRAGSA 50 LLC · CIK 0001822130 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 1,247,088

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds and vehicles, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund"), DRAGSA 49 LLC ("DRAGSA 49") and DRAGSA 50 LLC ("DRAGSA 50"). Each of VGI, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own all of the securities reported on this form.

F2 · ownership.nature: These shares of Common Stock are held directly by Opportunities Fund. Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001387131-20-007889 · ownership.xml · nonDerivative · entry 2

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

DRAGSA 50 LLC · CIK 0001822130 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 1,176,609

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds and vehicles, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund"), DRAGSA 49 LLC ("DRAGSA 49") and DRAGSA 50 LLC ("DRAGSA 50"). Each of VGI, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own all of the securities reported on this form.

F2 · ownership.nature: These shares of Common Stock are held directly by Opportunities Fund. Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001387131-20-007889 · ownership.xml · nonDerivative · entry 1

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

DRAGSA 50 LLC · CIK 0001822130 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 1,161,784

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds and vehicles, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund"), DRAGSA 49 LLC ("DRAGSA 49") and DRAGSA 50 LLC ("DRAGSA 50"). Each of VGI, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own all of the securities reported on this form.

F2 · ownership.nature: These shares of Common Stock are held directly by Opportunities Fund. Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0001387131-20-003800 · ownership.xml · nonDerivative · entry 1

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 4,443,284

F1 · ownership.nature: Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund"). Each of VGI, Opportunities GP, Opportunities Portfolio GP, VGOL, Opportunities Fund, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F2 · ownership.nature: On April 7, 2020, Opportunities Fund acquired 750,000 shares of common stock of the Issuer ("Common Stock") at a price of $18 per share in connection with Zentalis Pharmaceutical, Inc.'s initial public offering. VGI provides managerial services to Opportunities Fund, which directly holds the 4,443,284 shares of Common Stock reported herein. Because of the relationship between VGI and VGOP, VGI may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F3 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F4 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

SEC source: 0000903423-20-000010 · adaptive.xml · nonDerivative · entry 1

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 33,493,708

F1 · shares: On January 28, 2020, the Viking Funds (defined below) sold an aggregate of 4,912,899 shares of common stock of the Issuer ("Common Stock") at a price of $24.9763 per share in connection with the Issuer's secondary offering (the "Secondary Offering"). VGE II sold 69,386 shares in the Secondary Offering, VGEM sold 3,399,929 shares in the Secondary Offering, VLFM sold 1,260,106 shares in the Secondary Offering and Opportunities Fund sold 183,478 shares in the Secondary Offering.

F2 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F3 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F4 · ownership.nature: VGI provides managerial services to (i) VGE II, which directly holds 473,043 shares of Common Stock; (ii) VGEM, which directly holds 23,179,034 shares of Common Stock; (iii) VLFM, which directly holds 8,590,772 shares of Common Stock; and (iv) Opportunities Fund, which directly holds 1,250,859 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F5 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.Common Stock; (iii) VLFM, which directly holds 9,850,878 shares of Common Stock; and (iv) Opportunities Fund, which directly holds 1,434,337 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F6 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F7 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F8 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

SEC source: 0000903423-20-000011 · vgpadaptive4.xml · nonDerivative · entry 1

VIKING GLOBAL PERFORMANCE LLC · CIK 0001132625 · 10% owner

Viking Global Equities II LP · CIK 0001413378 · 10% owner

Viking Global Equities Master Ltd. · CIK 0001759530 · 10% owner

Viking Long Fund GP LLC · CIK 0001621607 · 10% owner

Viking Long Fund Master Ltd. · CIK 0001621596 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 33,493,708

F1 · shares: On January 28, 2020, the Viking Funds (defined below) sold an aggregate of 4,912,899 shares of common stock of the Issuer ("Common Stock") at a price of $24.9763 per share in connection with the Issuer's secondary offering (the "Secondary Offering"). VGE II sold 69,386 shares in the Secondary Offering, VGEM sold 3,399,929 shares in the Secondary Offering, VLFM sold 1,260,106 shares in the Secondary Offering and Opportunities Fund sold 183,478 shares in the Secondary Offering.

F2 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F3 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F4 · ownership.nature: VGI provides managerial services to (i) VGE II, which directly holds 473,043 shares of Common Stock; (ii) VGEM, which directly holds 23,179,034 shares of Common Stock; (iii) VLFM, which directly holds 8,590,772 shares of Common Stock; and (iv) Opportunities Fund, which directly holds 1,250,859 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F5 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F6 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F7 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F8 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000903423-19-000272 · adaptive.xml · derivative · entry 9

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 0

Underlying: Common Stock · 290,572 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · derivative.exercise_date: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · derivative.expiration_date: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F3 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F4 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F5 · ownership.nature: VGI provides managerial services to (i) VGEM, which directly holds 26,578,963 shares of Common Stock; (ii) VGE II, which directly holds 542,429 shares of Common Stock; (iii) VLFM, which directly holds 9,850,878 shares of Common Stock; and (iv) Opportunities Fund, which directly holds 1,434,337 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F6 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F7 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F8 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F9 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000903423-19-000272 · adaptive.xml · derivative · entry 8

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 0

Underlying: Common Stock · 2,007,740 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · derivative.exercise_date: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · derivative.expiration_date: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F3 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F4 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F5 · ownership.nature: VGI provides managerial services to (i) VGEM, which directly holds 26,578,963 shares of Common Stock; (ii) VGE II, which directly holds 542,429 shares of Common Stock; (iii) VLFM, which directly holds 9,850,878 shares of Common Stock; and (iv) Opportunities Fund, which directly holds 1,434,337 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F6 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F7 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F8 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F9 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000903423-19-000272 · adaptive.xml · derivative · entry 7

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 0

Underlying: Common Stock · 15,524,350 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · derivative.exercise_date: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · derivative.expiration_date: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F3 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F4 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F5 · ownership.nature: VGI provides managerial services to (i) VGEM, which directly holds 26,578,963 shares of Common Stock; (ii) VGE II, which directly holds 542,429 shares of Common Stock; (iii) VLFM, which directly holds 9,850,878 shares of Common Stock; and (iv) Opportunities Fund, which directly holds 1,434,337 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F6 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F7 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F8 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F9 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000903423-19-000272 · adaptive.xml · derivative · entry 6

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 0

Underlying: Common Stock · 18,908,945 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · derivative.exercise_date: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · derivative.expiration_date: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F3 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F4 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F5 · ownership.nature: VGI provides managerial services to (i) VGEM, which directly holds 26,578,963 shares of Common Stock; (ii) VGE II, which directly holds 542,429 shares of Common Stock; (iii) VLFM, which directly holds 9,850,878 shares of Common Stock; and (iv) Opportunities Fund, which directly holds 1,434,337 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F6 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F7 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F8 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F9 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000903423-19-000272 · adaptive.xml · nonDerivative · entry 5

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 38,406,607

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F3 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F4 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F5 · ownership.nature: VGI provides managerial services to (i) VGEM, which directly holds 26,578,963 shares of Common Stock; (ii) VGE II, which directly holds 542,429 shares of Common Stock; (iii) VLFM, which directly holds 9,850,878 shares of Common Stock; and (iv) Opportunities Fund, which directly holds 1,434,337 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F6 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F7 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F8 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F9 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000903423-19-000272 · adaptive.xml · nonDerivative · entry 4

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 38,116,035

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F3 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F4 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F5 · ownership.nature: VGI provides managerial services to (i) VGEM, which directly holds 26,578,963 shares of Common Stock; (ii) VGE II, which directly holds 542,429 shares of Common Stock; (iii) VLFM, which directly holds 9,850,878 shares of Common Stock; and (iv) Opportunities Fund, which directly holds 1,434,337 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F6 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F7 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F8 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F9 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000903423-19-000272 · adaptive.xml · nonDerivative · entry 3

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 36,108,295

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F3 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F4 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F5 · ownership.nature: VGI provides managerial services to (i) VGEM, which directly holds 26,578,963 shares of Common Stock; (ii) VGE II, which directly holds 542,429 shares of Common Stock; (iii) VLFM, which directly holds 9,850,878 shares of Common Stock; and (iv) Opportunities Fund, which directly holds 1,434,337 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F6 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F7 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F8 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F9 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000903423-19-000272 · adaptive.xml · nonDerivative · entry 2

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 20,583,945

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F3 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F4 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F5 · ownership.nature: VGI provides managerial services to (i) VGEM, which directly holds 26,578,963 shares of Common Stock; (ii) VGE II, which directly holds 542,429 shares of Common Stock; (iii) VLFM, which directly holds 9,850,878 shares of Common Stock; and (iv) Opportunities Fund, which directly holds 1,434,337 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F6 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F7 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F8 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F9 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000903423-19-000272 · adaptive.xml · nonDerivative · entry 1

VIKING GLOBAL INVESTORS LP · CIK 0001103804 · 10% owner

Viking Global Opportunities Illiquid Investments Sub-Master LP · CIK 0001629482 · 10% owner

Viking Global Opportunities Portfolio GP LLC · CIK 0001629472 · 10% owner

Viking Global Opportunities GP LLC · CIK 0001629476 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 1,675,000

F1 · shares: On July 1, 2019, the Viking Funds (defined below) acquired an aggregate of 250,000 shares of common stock of the Issuer ("Common Stock") at a price of $20 per share in connection with the Issuer's initial public offering ("IPO"). VGEM acquired 173,010 shares in the IPO, VGE II acquired 3,531 shares in the IPO, VLFM acquired 64,122 shares in the IPO and Opportunities Fund acquired 9,337 shares in the IPO.

F3 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F4 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F5 · ownership.nature: VGI provides managerial services to (i) VGEM, which directly holds 26,578,963 shares of Common Stock; (ii) VGE II, which directly holds 542,429 shares of Common Stock; (iii) VLFM, which directly holds 9,850,878 shares of Common Stock; and (iv) Opportunities Fund, which directly holds 1,434,337 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F6 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F7 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F8 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F9 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000903423-19-000273 · vgpadaptive4.xml · derivative · entry 9

VIKING GLOBAL PERFORMANCE LLC · CIK 0001132625 · 10% owner

Viking Global Equities Master Ltd. · CIK 0001759530 · 10% owner

Viking Long Fund GP LLC · CIK 0001621607 · 10% owner

Viking Long Fund Master Ltd. · CIK 0001621596 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 0

Underlying: Common Stock · 290,572 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · derivative.exercise_date: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · derivative.expiration_date: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F3 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F4 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F5 · ownership.nature: VGI provides managerial services to (i) VGEM, which directly holds 26,578,963 shares of Common Stock; (ii) VGE II, which directly holds 542,429 shares of Common Stock; (iii) VLFM, which directly holds 9,850,878 shares of Common Stock; and (iv) Opportunities Fund, which directly holds 1,434,337 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F6 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F7 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F8 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F9 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000903423-19-000273 · vgpadaptive4.xml · derivative · entry 8

VIKING GLOBAL PERFORMANCE LLC · CIK 0001132625 · 10% owner

Viking Global Equities Master Ltd. · CIK 0001759530 · 10% owner

Viking Long Fund GP LLC · CIK 0001621607 · 10% owner

Viking Long Fund Master Ltd. · CIK 0001621596 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 0

Underlying: Common Stock · 2,007,740 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · derivative.exercise_date: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · derivative.expiration_date: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F3 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F4 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F5 · ownership.nature: VGI provides managerial services to (i) VGEM, which directly holds 26,578,963 shares of Common Stock; (ii) VGE II, which directly holds 542,429 shares of Common Stock; (iii) VLFM, which directly holds 9,850,878 shares of Common Stock; and (iv) Opportunities Fund, which directly holds 1,434,337 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F6 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F7 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F8 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F9 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000903423-19-000273 · vgpadaptive4.xml · derivative · entry 7

VIKING GLOBAL PERFORMANCE LLC · CIK 0001132625 · 10% owner

Viking Global Equities Master Ltd. · CIK 0001759530 · 10% owner

Viking Long Fund GP LLC · CIK 0001621607 · 10% owner

Viking Long Fund Master Ltd. · CIK 0001621596 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 0

Underlying: Common Stock · 15,524,350 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · derivative.exercise_date: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · derivative.expiration_date: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F3 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F4 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F5 · ownership.nature: VGI provides managerial services to (i) VGEM, which directly holds 26,578,963 shares of Common Stock; (ii) VGE II, which directly holds 542,429 shares of Common Stock; (iii) VLFM, which directly holds 9,850,878 shares of Common Stock; and (iv) Opportunities Fund, which directly holds 1,434,337 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F6 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F7 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F8 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F9 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000903423-19-000273 · vgpadaptive4.xml · derivative · entry 6

VIKING GLOBAL PERFORMANCE LLC · CIK 0001132625 · 10% owner

Viking Global Equities Master Ltd. · CIK 0001759530 · 10% owner

Viking Long Fund GP LLC · CIK 0001621607 · 10% owner

Viking Long Fund Master Ltd. · CIK 0001621596 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 0

Underlying: Common Stock · 18,908,945 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · derivative.exercise_date: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F2 · derivative.expiration_date: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F3 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F4 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F5 · ownership.nature: VGI provides managerial services to (i) VGEM, which directly holds 26,578,963 shares of Common Stock; (ii) VGE II, which directly holds 542,429 shares of Common Stock; (iii) VLFM, which directly holds 9,850,878 shares of Common Stock; and (iv) Opportunities Fund, which directly holds 1,434,337 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F6 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F7 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F8 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F9 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000903423-19-000273 · vgpadaptive4.xml · nonDerivative · entry 5

VIKING GLOBAL PERFORMANCE LLC · CIK 0001132625 · 10% owner

Viking Global Equities Master Ltd. · CIK 0001759530 · 10% owner

Viking Long Fund GP LLC · CIK 0001621607 · 10% owner

Viking Long Fund Master Ltd. · CIK 0001621596 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 38,406,607

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F3 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F4 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F5 · ownership.nature: VGI provides managerial services to (i) VGEM, which directly holds 26,578,963 shares of Common Stock; (ii) VGE II, which directly holds 542,429 shares of Common Stock; (iii) VLFM, which directly holds 9,850,878 shares of Common Stock; and (iv) Opportunities Fund, which directly holds 1,434,337 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F6 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F7 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F8 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F9 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000903423-19-000273 · vgpadaptive4.xml · nonDerivative · entry 4

VIKING GLOBAL PERFORMANCE LLC · CIK 0001132625 · 10% owner

Viking Global Equities Master Ltd. · CIK 0001759530 · 10% owner

Viking Long Fund GP LLC · CIK 0001621607 · 10% owner

Viking Long Fund Master Ltd. · CIK 0001621596 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 38,116,035

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F3 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F4 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F5 · ownership.nature: VGI provides managerial services to (i) VGEM, which directly holds 26,578,963 shares of Common Stock; (ii) VGE II, which directly holds 542,429 shares of Common Stock; (iii) VLFM, which directly holds 9,850,878 shares of Common Stock; and (iv) Opportunities Fund, which directly holds 1,434,337 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F6 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F7 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F8 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F9 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000903423-19-000273 · vgpadaptive4.xml · nonDerivative · entry 3

VIKING GLOBAL PERFORMANCE LLC · CIK 0001132625 · 10% owner

Viking Global Equities Master Ltd. · CIK 0001759530 · 10% owner

Viking Long Fund GP LLC · CIK 0001621607 · 10% owner

Viking Long Fund Master Ltd. · CIK 0001621596 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 36,108,295

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F3 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F4 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F5 · ownership.nature: VGI provides managerial services to (i) VGEM, which directly holds 26,578,963 shares of Common Stock; (ii) VGE II, which directly holds 542,429 shares of Common Stock; (iii) VLFM, which directly holds 9,850,878 shares of Common Stock; and (iv) Opportunities Fund, which directly holds 1,434,337 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F6 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F7 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F8 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F9 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0000903423-19-000273 · vgpadaptive4.xml · nonDerivative · entry 2

VIKING GLOBAL PERFORMANCE LLC · CIK 0001132625 · 10% owner

Viking Global Equities Master Ltd. · CIK 0001759530 · 10% owner

Viking Long Fund GP LLC · CIK 0001621607 · 10% owner

Viking Long Fund Master Ltd. · CIK 0001621596 · 10% owner

HALVORSEN OLE ANDREAS · CIK 0001133006 · 10% owner

Ott David C. · CIK 0001621842 · 10% owner

Shabet Rose Sharon · CIK 0001711393 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See explanation of responses

Disclosed balance after: 20,583,945

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: On July 1, 2019 in connection with the closing of the IPO, the shares of Series D Preferred Stock, Series E Preferred Stock, Series F Preferred Stock and Series F-1 Preferred Stock held by the Reporting Persons (defined below) automatically converted into shares of Common Stock on a one-to-one basis.

F3 · ownership.nature: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), Viking Global Equities Master Ltd. ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F4 · ownership.nature: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F5 · ownership.nature: VGI provides managerial services to (i) VGEM, which directly holds 26,578,963 shares of Common Stock; (ii) VGE II, which directly holds 542,429 shares of Common Stock; (iii) VLFM, which directly holds 9,850,878 shares of Common Stock; and (iv) Opportunities Fund, which directly holds 1,434,337 shares of Common Stock. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares of Common Stock directly held by the Viking Funds.

F6 · ownership.nature: VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares of Common Stock directly held by VGE II and VGEM.

F7 · ownership.nature: VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares of Common Stock directly held by VLFM.

F8 · ownership.nature: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund.

F9 · ownership.nature: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.