GH

SEC source: 0000947871-18-000817 · ownership.xml · nonDerivative · entry 2

ORBIMED ADVISORS LLC · CIK 0001055951 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By OrbiMed Royalties Opportunities II, LP

Disclosed balance after: 8,972

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: The Series E Preferred Stock is convertible into Common Stock on a 0.7378-for-one basis into the number of shares of Common Stock shown in Column 3 at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering without payment of further consideration. The shares of Series E Preferred Stock have no expiration date.

F3 · ownership.nature: The shares are held of record by OrbiMed Royalty Opportunities II, LP ("ORO II"). OrbiMed ROF II LLC ("ROF II") is the sole general partner of ORO II, and OrbiMed Advisors LLC ("Advisors") is sole managing member of ROF II. By virtue of such relationships, Advisors may be deemed to have voting and investment power with respect to the securities held by ORO II noted above and as a result may be deemed to have beneficial ownership over such securities. Advisors exercises investment and voting power through a management committee comprised of Carl L. Gordon, Sven H. Borho and Jonathan T. Silverstein. The Reporting Person disclaims beneficial ownership of such shares except to the extent of its 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 purposes.

SEC source: 0000947871-18-000817 · ownership.xml · nonDerivative · entry 1

ORBIMED ADVISORS LLC · CIK 0001055951 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By OrbiMed Royalties Opportunities II, LP

Disclosed balance after: 1,525,492

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.

F1 · price: The Series D Preferred Stock is convertible into Common Stock on a 0.7604-for-one basis into the number of shares of Common Stock shown in Column 3 at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering without payment of further consideration. The shares of Series D Preferred Stock have no expiration date.

F3 · ownership.nature: The shares are held of record by OrbiMed Royalty Opportunities II, LP ("ORO II"). OrbiMed ROF II LLC ("ROF II") is the sole general partner of ORO II, and OrbiMed Advisors LLC ("Advisors") is sole managing member of ROF II. By virtue of such relationships, Advisors may be deemed to have voting and investment power with respect to the securities held by ORO II noted above and as a result may be deemed to have beneficial ownership over such securities. Advisors exercises investment and voting power through a management committee comprised of Carl L. Gordon, Sven H. Borho and Jonathan T. Silverstein. The Reporting Person disclaims beneficial ownership of such shares except to the extent of its 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 purposes.

SEC source: 0001628280-18-012482 · wf-form4_153928969554454.xml · derivative · entry 16

Khosla Ventures IV, L.P. · CIK 0001521016 · Former 10% Owner

Khosla Ventures IV (CF), L.P. · CIK 0001685550 · 10% owner

Khosla Ventures Associates IV, LLC · CIK 0001685549 · 10% owner

VK Services, LLC · CIK 0001501927 · 10% owner

KHOSLA VINOD · CIK 0001032453 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Khosla Ventures IV, L.P.

Disclosed balance after: 0

Underlying: COMMON STOCK · 42,169 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F3 · ownership.nature: Consists of securities held of record by Khosla Ventures IV, L.P. ("KV IV"), of which KVA IV is the general partner. Vinod Khosla is the managing member of VK Services, which is the sole manager of KVA IV. Each of KVA IV, VK Services and Vinod Khosla may be deemed to possess voting and investment control over such securities held by KV IV, and each of KVA IV, VK Services and Vinod Khosla may be deemed to have indirect beneficial ownership of such securities held by KV IV. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its respective pecuniary interests 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 purposes.

SEC source: 0001628280-18-012482 · wf-form4_153928969554454.xml · derivative · entry 15

Khosla Ventures IV, L.P. · CIK 0001521016 · Former 10% Owner

Khosla Ventures IV (CF), L.P. · CIK 0001685550 · 10% owner

Khosla Ventures Associates IV, LLC · CIK 0001685549 · 10% owner

VK Services, LLC · CIK 0001501927 · 10% owner

KHOSLA VINOD · CIK 0001032453 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Khosla Ventures IV (CF), L.P.

Disclosed balance after: 0

Underlying: COMMON STOCK · 2,695 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F2 · ownership.nature: Consists of securities held of record by Khosla Ventures IV (CF), L.P. ("KV IV (CF)"), of which Khosla Ventures Associates IV, LLC ("KVA IV") is the general partner. Vinod Khosla is the managing member of VK Services, LLC ("VK Services"), which is the sole manager of KVA IV. Each of KVA IV, VK Services and Vinod Khosla may be deemed to possess voting and investment control over such securities held by KV IV (CF), and each of KVA IV, VK Services, and Vinod Khosla may be deemed to have indirect beneficial ownership of such securities held by KV IV (CF). Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interests 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 purposes.

SEC source: 0001628280-18-012482 · wf-form4_153928969554454.xml · derivative · entry 14

Khosla Ventures IV, L.P. · CIK 0001521016 · Former 10% Owner

Khosla Ventures IV (CF), L.P. · CIK 0001685550 · 10% owner

Khosla Ventures Associates IV, LLC · CIK 0001685549 · 10% owner

VK Services, LLC · CIK 0001501927 · 10% owner

KHOSLA VINOD · CIK 0001032453 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Khosla Ventures IV, L.P.

Disclosed balance after: 0

Underlying: COMMON STOCK · 955,882 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F3 · ownership.nature: Consists of securities held of record by Khosla Ventures IV, L.P. ("KV IV"), of which KVA IV is the general partner. Vinod Khosla is the managing member of VK Services, which is the sole manager of KVA IV. Each of KVA IV, VK Services and Vinod Khosla may be deemed to possess voting and investment control over such securities held by KV IV, and each of KVA IV, VK Services and Vinod Khosla may be deemed to have indirect beneficial ownership of such securities held by KV IV. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its respective pecuniary interests 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 purposes.

SEC source: 0001628280-18-012482 · wf-form4_153928969554454.xml · derivative · entry 13

Khosla Ventures IV, L.P. · CIK 0001521016 · Former 10% Owner

Khosla Ventures IV (CF), L.P. · CIK 0001685550 · 10% owner

Khosla Ventures Associates IV, LLC · CIK 0001685549 · 10% owner

VK Services, LLC · CIK 0001501927 · 10% owner

KHOSLA VINOD · CIK 0001032453 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Khosla Ventures IV (CF), L.P.

Disclosed balance after: 0

Underlying: COMMON STOCK · 61,111 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F2 · ownership.nature: Consists of securities held of record by Khosla Ventures IV (CF), L.P. ("KV IV (CF)"), of which Khosla Ventures Associates IV, LLC ("KVA IV") is the general partner. Vinod Khosla is the managing member of VK Services, LLC ("VK Services"), which is the sole manager of KVA IV. Each of KVA IV, VK Services and Vinod Khosla may be deemed to possess voting and investment control over such securities held by KV IV (CF), and each of KVA IV, VK Services, and Vinod Khosla may be deemed to have indirect beneficial ownership of such securities held by KV IV (CF). Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interests 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 purposes.

SEC source: 0001628280-18-012482 · wf-form4_153928969554454.xml · derivative · entry 12

Khosla Ventures IV, L.P. · CIK 0001521016 · Former 10% Owner

Khosla Ventures IV (CF), L.P. · CIK 0001685550 · 10% owner

Khosla Ventures Associates IV, LLC · CIK 0001685549 · 10% owner

VK Services, LLC · CIK 0001501927 · 10% owner

KHOSLA VINOD · CIK 0001032453 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Khosla Ventures IV, L.P.

Disclosed balance after: 0

Underlying: COMMON STOCK · 1,316,688 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F3 · ownership.nature: Consists of securities held of record by Khosla Ventures IV, L.P. ("KV IV"), of which KVA IV is the general partner. Vinod Khosla is the managing member of VK Services, which is the sole manager of KVA IV. Each of KVA IV, VK Services and Vinod Khosla may be deemed to possess voting and investment control over such securities held by KV IV, and each of KVA IV, VK Services and Vinod Khosla may be deemed to have indirect beneficial ownership of such securities held by KV IV. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its respective pecuniary interests 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 purposes.

SEC source: 0001628280-18-012482 · wf-form4_153928969554454.xml · derivative · entry 11

Khosla Ventures IV, L.P. · CIK 0001521016 · Former 10% Owner

Khosla Ventures IV (CF), L.P. · CIK 0001685550 · 10% owner

Khosla Ventures Associates IV, LLC · CIK 0001685549 · 10% owner

VK Services, LLC · CIK 0001501927 · 10% owner

KHOSLA VINOD · CIK 0001032453 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Khosla Ventures IV (CF), L.P.

Disclosed balance after: 0

Underlying: COMMON STOCK · 84,306 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F2 · ownership.nature: Consists of securities held of record by Khosla Ventures IV (CF), L.P. ("KV IV (CF)"), of which Khosla Ventures Associates IV, LLC ("KVA IV") is the general partner. Vinod Khosla is the managing member of VK Services, LLC ("VK Services"), which is the sole manager of KVA IV. Each of KVA IV, VK Services and Vinod Khosla may be deemed to possess voting and investment control over such securities held by KV IV (CF), and each of KVA IV, VK Services, and Vinod Khosla may be deemed to have indirect beneficial ownership of such securities held by KV IV (CF). Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interests 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 purposes.

SEC source: 0001628280-18-012482 · wf-form4_153928969554454.xml · derivative · entry 10

Khosla Ventures IV, L.P. · CIK 0001521016 · Former 10% Owner

Khosla Ventures IV (CF), L.P. · CIK 0001685550 · 10% owner

Khosla Ventures Associates IV, LLC · CIK 0001685549 · 10% owner

VK Services, LLC · CIK 0001501927 · 10% owner

KHOSLA VINOD · CIK 0001032453 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Khosla Ventures IV, L.P.

Disclosed balance after: 0

Underlying: COMMON STOCK · 4,395,627 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F3 · ownership.nature: Consists of securities held of record by Khosla Ventures IV, L.P. ("KV IV"), of which KVA IV is the general partner. Vinod Khosla is the managing member of VK Services, which is the sole manager of KVA IV. Each of KVA IV, VK Services and Vinod Khosla may be deemed to possess voting and investment control over such securities held by KV IV, and each of KVA IV, VK Services and Vinod Khosla may be deemed to have indirect beneficial ownership of such securities held by KV IV. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its respective pecuniary interests 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 purposes.

SEC source: 0001628280-18-012482 · wf-form4_153928969554454.xml · derivative · entry 9

Khosla Ventures IV, L.P. · CIK 0001521016 · Former 10% Owner

Khosla Ventures IV (CF), L.P. · CIK 0001685550 · 10% owner

Khosla Ventures Associates IV, LLC · CIK 0001685549 · 10% owner

VK Services, LLC · CIK 0001501927 · 10% owner

KHOSLA VINOD · CIK 0001032453 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Khosla Ventures IV (CF), L.P.

Disclosed balance after: 0

Underlying: COMMON STOCK · 281,020 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F2 · ownership.nature: Consists of securities held of record by Khosla Ventures IV (CF), L.P. ("KV IV (CF)"), of which Khosla Ventures Associates IV, LLC ("KVA IV") is the general partner. Vinod Khosla is the managing member of VK Services, LLC ("VK Services"), which is the sole manager of KVA IV. Each of KVA IV, VK Services and Vinod Khosla may be deemed to possess voting and investment control over such securities held by KV IV (CF), and each of KVA IV, VK Services, and Vinod Khosla may be deemed to have indirect beneficial ownership of such securities held by KV IV (CF). Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interests 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 purposes.

SEC source: 0001628280-18-012482 · wf-form4_153928969554454.xml · nonDerivative · entry 8

Khosla Ventures IV, L.P. · CIK 0001521016 · Former 10% Owner

Khosla Ventures IV (CF), L.P. · CIK 0001685550 · 10% owner

Khosla Ventures Associates IV, LLC · CIK 0001685549 · 10% owner

VK Services, LLC · CIK 0001501927 · 10% owner

KHOSLA VINOD · CIK 0001032453 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Khosla Ventures IV, L.P

Disclosed balance after: 42,169

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F3 · ownership.nature: Consists of securities held of record by Khosla Ventures IV, L.P. ("KV IV"), of which KVA IV is the general partner. Vinod Khosla is the managing member of VK Services, which is the sole manager of KVA IV. Each of KVA IV, VK Services and Vinod Khosla may be deemed to possess voting and investment control over such securities held by KV IV, and each of KVA IV, VK Services and Vinod Khosla may be deemed to have indirect beneficial ownership of such securities held by KV IV. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its respective pecuniary interests 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 purposes.

SEC source: 0001628280-18-012482 · wf-form4_153928969554454.xml · nonDerivative · entry 7

Khosla Ventures IV, L.P. · CIK 0001521016 · Former 10% Owner

Khosla Ventures IV (CF), L.P. · CIK 0001685550 · 10% owner

Khosla Ventures Associates IV, LLC · CIK 0001685549 · 10% owner

VK Services, LLC · CIK 0001501927 · 10% owner

KHOSLA VINOD · CIK 0001032453 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Khosla Ventures IV (CF), L.P.

Disclosed balance after: 2,695

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F2 · ownership.nature: Consists of securities held of record by Khosla Ventures IV (CF), L.P. ("KV IV (CF)"), of which Khosla Ventures Associates IV, LLC ("KVA IV") is the general partner. Vinod Khosla is the managing member of VK Services, LLC ("VK Services"), which is the sole manager of KVA IV. Each of KVA IV, VK Services and Vinod Khosla may be deemed to possess voting and investment control over such securities held by KV IV (CF), and each of KVA IV, VK Services, and Vinod Khosla may be deemed to have indirect beneficial ownership of such securities held by KV IV (CF). Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interests 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 purposes.

SEC source: 0001628280-18-012482 · wf-form4_153928969554454.xml · nonDerivative · entry 6

Khosla Ventures IV, L.P. · CIK 0001521016 · Former 10% Owner

Khosla Ventures IV (CF), L.P. · CIK 0001685550 · 10% owner

Khosla Ventures Associates IV, LLC · CIK 0001685549 · 10% owner

VK Services, LLC · CIK 0001501927 · 10% owner

KHOSLA VINOD · CIK 0001032453 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Khosla Ventures IV, L.P

Disclosed balance after: 955,882

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F3 · ownership.nature: Consists of securities held of record by Khosla Ventures IV, L.P. ("KV IV"), of which KVA IV is the general partner. Vinod Khosla is the managing member of VK Services, which is the sole manager of KVA IV. Each of KVA IV, VK Services and Vinod Khosla may be deemed to possess voting and investment control over such securities held by KV IV, and each of KVA IV, VK Services and Vinod Khosla may be deemed to have indirect beneficial ownership of such securities held by KV IV. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its respective pecuniary interests 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 purposes.

SEC source: 0001628280-18-012482 · wf-form4_153928969554454.xml · nonDerivative · entry 5

Khosla Ventures IV, L.P. · CIK 0001521016 · Former 10% Owner

Khosla Ventures IV (CF), L.P. · CIK 0001685550 · 10% owner

Khosla Ventures Associates IV, LLC · CIK 0001685549 · 10% owner

VK Services, LLC · CIK 0001501927 · 10% owner

KHOSLA VINOD · CIK 0001032453 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Khosla Ventures IV (CF), L.P.

Disclosed balance after: 61,111

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F2 · ownership.nature: Consists of securities held of record by Khosla Ventures IV (CF), L.P. ("KV IV (CF)"), of which Khosla Ventures Associates IV, LLC ("KVA IV") is the general partner. Vinod Khosla is the managing member of VK Services, LLC ("VK Services"), which is the sole manager of KVA IV. Each of KVA IV, VK Services and Vinod Khosla may be deemed to possess voting and investment control over such securities held by KV IV (CF), and each of KVA IV, VK Services, and Vinod Khosla may be deemed to have indirect beneficial ownership of such securities held by KV IV (CF). Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interests 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 purposes.

SEC source: 0001628280-18-012482 · wf-form4_153928969554454.xml · nonDerivative · entry 4

Khosla Ventures IV, L.P. · CIK 0001521016 · Former 10% Owner

Khosla Ventures IV (CF), L.P. · CIK 0001685550 · 10% owner

Khosla Ventures Associates IV, LLC · CIK 0001685549 · 10% owner

VK Services, LLC · CIK 0001501927 · 10% owner

KHOSLA VINOD · CIK 0001032453 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Khosla Ventures IV, L.P

Disclosed balance after: 1,318,688

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F3 · ownership.nature: Consists of securities held of record by Khosla Ventures IV, L.P. ("KV IV"), of which KVA IV is the general partner. Vinod Khosla is the managing member of VK Services, which is the sole manager of KVA IV. Each of KVA IV, VK Services and Vinod Khosla may be deemed to possess voting and investment control over such securities held by KV IV, and each of KVA IV, VK Services and Vinod Khosla may be deemed to have indirect beneficial ownership of such securities held by KV IV. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its respective pecuniary interests 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 purposes.

SEC source: 0001628280-18-012482 · wf-form4_153928969554454.xml · nonDerivative · entry 3

Khosla Ventures IV, L.P. · CIK 0001521016 · Former 10% Owner

Khosla Ventures IV (CF), L.P. · CIK 0001685550 · 10% owner

Khosla Ventures Associates IV, LLC · CIK 0001685549 · 10% owner

VK Services, LLC · CIK 0001501927 · 10% owner

KHOSLA VINOD · CIK 0001032453 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Khosla Ventures IV (CF), L.P.

Disclosed balance after: 84,306

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F2 · ownership.nature: Consists of securities held of record by Khosla Ventures IV (CF), L.P. ("KV IV (CF)"), of which Khosla Ventures Associates IV, LLC ("KVA IV") is the general partner. Vinod Khosla is the managing member of VK Services, LLC ("VK Services"), which is the sole manager of KVA IV. Each of KVA IV, VK Services and Vinod Khosla may be deemed to possess voting and investment control over such securities held by KV IV (CF), and each of KVA IV, VK Services, and Vinod Khosla may be deemed to have indirect beneficial ownership of such securities held by KV IV (CF). Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interests 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 purposes.

SEC source: 0001628280-18-012482 · wf-form4_153928969554454.xml · nonDerivative · entry 2

Khosla Ventures IV, L.P. · CIK 0001521016 · Former 10% Owner

Khosla Ventures IV (CF), L.P. · CIK 0001685550 · 10% owner

Khosla Ventures Associates IV, LLC · CIK 0001685549 · 10% owner

VK Services, LLC · CIK 0001501927 · 10% owner

KHOSLA VINOD · CIK 0001032453 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Khosla Ventures IV, L.P

Disclosed balance after: 4,395,627

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F3 · ownership.nature: Consists of securities held of record by Khosla Ventures IV, L.P. ("KV IV"), of which KVA IV is the general partner. Vinod Khosla is the managing member of VK Services, which is the sole manager of KVA IV. Each of KVA IV, VK Services and Vinod Khosla may be deemed to possess voting and investment control over such securities held by KV IV, and each of KVA IV, VK Services and Vinod Khosla may be deemed to have indirect beneficial ownership of such securities held by KV IV. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its respective pecuniary interests 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 purposes.

SEC source: 0001628280-18-012482 · wf-form4_153928969554454.xml · nonDerivative · entry 1

Khosla Ventures IV, L.P. · CIK 0001521016 · Former 10% Owner

Khosla Ventures IV (CF), L.P. · CIK 0001685550 · 10% owner

Khosla Ventures Associates IV, LLC · CIK 0001685549 · 10% owner

VK Services, LLC · CIK 0001501927 · 10% owner

KHOSLA VINOD · CIK 0001032453 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Khosla Ventures IV (CF), L.P.

Disclosed balance after: 281,020

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F2 · ownership.nature: Consists of securities held of record by Khosla Ventures IV (CF), L.P. ("KV IV (CF)"), of which Khosla Ventures Associates IV, LLC ("KVA IV") is the general partner. Vinod Khosla is the managing member of VK Services, LLC ("VK Services"), which is the sole manager of KVA IV. Each of KVA IV, VK Services and Vinod Khosla may be deemed to possess voting and investment control over such securities held by KV IV (CF), and each of KVA IV, VK Services, and Vinod Khosla may be deemed to have indirect beneficial ownership of such securities held by KV IV (CF). Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interests 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 purposes.

SEC source: 0001628280-18-012494 · wf-form4_153929371334478.xml · derivative · entry 6

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Talasaz and Eskandari 2017 Family Trust

Disclosed balance after: 0

Underlying: COMMON STOCK · 21,937 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

SEC source: 0001628280-18-012494 · wf-form4_153929371334478.xml · nonDerivative · entry 1

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Talasaz and Eskandari 2017 Family Trust

Disclosed balance after: 4,153,631

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Amended and Restated Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

SEC source: 0001628280-18-012495 · wf-form4_153929374558330.xml · derivative · entry 2

Wiley Michael J · CIK 0001753789 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: COMMON STOCK · 6,561 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

SEC source: 0001628280-18-012495 · wf-form4_153929374558330.xml · nonDerivative · entry 1

Wiley Michael J · CIK 0001753789 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 439,949

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

SEC source: 0001628280-18-012506 · wf-form4_153930005844779.xml · derivative · entry 2

SOFTBANK VISION FUND (AIV M1) L.P. · CIK 0001755143 · 10% owner

SB INVESTMENT ADVISERS (UK) LTD · CIK 0001731509 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: COMMON STOCK · 25,816,470 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F2 · ownership.direct: The shares are directly held by SoftBank Vision Fund (AIV M1) L.P., or the Fund, SB Investment Advisers (UK) Limited, a wholly-owned subsidiary of SoftBank Group Corp., has been appointed as alternative investment fund manager, or AIFM, and is exclusively responsible for managing the Fund in accordance with the Alternative Investment Fund Managers Directive and is authorized and regulated by the UK Financial Conduct Authority accordingly. As AIFM of the Fund, SB Investment Advisers (UK) Limited is exclusively responsible for making all decisions related to the acquisition, structuring, financing, voting and disposal of the Fund's Investments. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012506 · wf-form4_153930005844779.xml · nonDerivative · entry 1

SOFTBANK VISION FUND (AIV M1) L.P. · CIK 0001755143 · 10% owner

SB INVESTMENT ADVISERS (UK) LTD · CIK 0001731509 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,816,470

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F2 · ownership.direct: The shares are directly held by SoftBank Vision Fund (AIV M1) L.P., or the Fund, SB Investment Advisers (UK) Limited, a wholly-owned subsidiary of SoftBank Group Corp., has been appointed as alternative investment fund manager, or AIFM, and is exclusively responsible for managing the Fund in accordance with the Alternative Investment Fund Managers Directive and is authorized and regulated by the UK Financial Conduct Authority accordingly. As AIFM of the Fund, SB Investment Advisers (UK) Limited is exclusively responsible for making all decisions related to the acquisition, structuring, financing, voting and disposal of the Fund's Investments. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012468 · wf-form4_153927856828683.xml · derivative · entry 6

Lightspeed Ultimate General Partner Select, Ltd. · CIK 0001700544 · 10% owner

Lightspeed Venture Partners Select, L.P. · CIK 0001602575 · 10% owner

Lightspeed General Partner Select, L.P. · CIK 0001700551 · 10% owner

Eggers Barry · CIK 0001366048 · 10% owner

Liew Jeremy · CIK 0001700539 · 10% owner

Mhatre Ravi · CIK 0001366050 · 10% owner

Nieh Peter · CIK 0001366051 · 10% owner

SCHAEPE CHRISTOPHER J · CIK 0001185068 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Lightspeed Venture Partners Select, L.P.

Disclosed balance after: 0

Underlying: COMMON STOCK · 44,866 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F2 · ownership.nature: The shares are directly held by Lightspeed Venture Partners Select, L.P. Lightspeed Ultimate General Partner Select, Ltd. ("LUGP Select") is the sole general partner of Lightspeed General Partner Select, L.P., which is the sole general partner of Lightspeed Venture Partners Select, L.P. Barry Eggers, Jeremy Liew, Ravi Mhatre, Peter Nieh and Christopher J. Schaepe are the directors of LUGP Select and share voting and dispositive power with respect to the shares held by Lightspeed Venture Partners Select, L.P. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012468 · wf-form4_153927856828683.xml · derivative · entry 5

Lightspeed Ultimate General Partner Select, Ltd. · CIK 0001700544 · 10% owner

Lightspeed Venture Partners Select, L.P. · CIK 0001602575 · 10% owner

Lightspeed General Partner Select, L.P. · CIK 0001700551 · 10% owner

Eggers Barry · CIK 0001366048 · 10% owner

Liew Jeremy · CIK 0001700539 · 10% owner

Mhatre Ravi · CIK 0001366050 · 10% owner

Nieh Peter · CIK 0001366051 · 10% owner

SCHAEPE CHRISTOPHER J · CIK 0001185068 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Lightspeed Venture Partners Select, L.P.

Disclosed balance after: 0

Underlying: COMMON STOCK · 508,497 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F2 · ownership.nature: The shares are directly held by Lightspeed Venture Partners Select, L.P. Lightspeed Ultimate General Partner Select, Ltd. ("LUGP Select") is the sole general partner of Lightspeed General Partner Select, L.P., which is the sole general partner of Lightspeed Venture Partners Select, L.P. Barry Eggers, Jeremy Liew, Ravi Mhatre, Peter Nieh and Christopher J. Schaepe are the directors of LUGP Select and share voting and dispositive power with respect to the shares held by Lightspeed Venture Partners Select, L.P. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012468 · wf-form4_153927856828683.xml · derivative · entry 4

Lightspeed Ultimate General Partner Select, Ltd. · CIK 0001700544 · 10% owner

Lightspeed Venture Partners Select, L.P. · CIK 0001602575 · 10% owner

Lightspeed General Partner Select, L.P. · CIK 0001700551 · 10% owner

Eggers Barry · CIK 0001366048 · 10% owner

Liew Jeremy · CIK 0001700539 · 10% owner

Mhatre Ravi · CIK 0001366050 · 10% owner

Nieh Peter · CIK 0001366051 · 10% owner

SCHAEPE CHRISTOPHER J · CIK 0001185068 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Lightspeed Venture Partners Select, L.P.

Disclosed balance after: 0

Underlying: COMMON STOCK · 2,046,035 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F2 · ownership.nature: The shares are directly held by Lightspeed Venture Partners Select, L.P. Lightspeed Ultimate General Partner Select, Ltd. ("LUGP Select") is the sole general partner of Lightspeed General Partner Select, L.P., which is the sole general partner of Lightspeed Venture Partners Select, L.P. Barry Eggers, Jeremy Liew, Ravi Mhatre, Peter Nieh and Christopher J. Schaepe are the directors of LUGP Select and share voting and dispositive power with respect to the shares held by Lightspeed Venture Partners Select, L.P. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012468 · wf-form4_153927856828683.xml · nonDerivative · entry 3

Lightspeed Ultimate General Partner Select, Ltd. · CIK 0001700544 · 10% owner

Lightspeed Venture Partners Select, L.P. · CIK 0001602575 · 10% owner

Lightspeed General Partner Select, L.P. · CIK 0001700551 · 10% owner

Eggers Barry · CIK 0001366048 · 10% owner

Liew Jeremy · CIK 0001700539 · 10% owner

Mhatre Ravi · CIK 0001366050 · 10% owner

Nieh Peter · CIK 0001366051 · 10% owner

SCHAEPE CHRISTOPHER J · CIK 0001185068 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Lightspeed Venture Partners Select, L.P.

Disclosed balance after: 2,599,398

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F2 · ownership.nature: The shares are directly held by Lightspeed Venture Partners Select, L.P. Lightspeed Ultimate General Partner Select, Ltd. ("LUGP Select") is the sole general partner of Lightspeed General Partner Select, L.P., which is the sole general partner of Lightspeed Venture Partners Select, L.P. Barry Eggers, Jeremy Liew, Ravi Mhatre, Peter Nieh and Christopher J. Schaepe are the directors of LUGP Select and share voting and dispositive power with respect to the shares held by Lightspeed Venture Partners Select, L.P. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012468 · wf-form4_153927856828683.xml · nonDerivative · entry 2

Lightspeed Ultimate General Partner Select, Ltd. · CIK 0001700544 · 10% owner

Lightspeed Venture Partners Select, L.P. · CIK 0001602575 · 10% owner

Lightspeed General Partner Select, L.P. · CIK 0001700551 · 10% owner

Eggers Barry · CIK 0001366048 · 10% owner

Liew Jeremy · CIK 0001700539 · 10% owner

Mhatre Ravi · CIK 0001366050 · 10% owner

Nieh Peter · CIK 0001366051 · 10% owner

SCHAEPE CHRISTOPHER J · CIK 0001185068 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Lightspeed Venture Partners Select, L.P.

Disclosed balance after: 2,554,532

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F2 · ownership.nature: The shares are directly held by Lightspeed Venture Partners Select, L.P. Lightspeed Ultimate General Partner Select, Ltd. ("LUGP Select") is the sole general partner of Lightspeed General Partner Select, L.P., which is the sole general partner of Lightspeed Venture Partners Select, L.P. Barry Eggers, Jeremy Liew, Ravi Mhatre, Peter Nieh and Christopher J. Schaepe are the directors of LUGP Select and share voting and dispositive power with respect to the shares held by Lightspeed Venture Partners Select, L.P. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012468 · wf-form4_153927856828683.xml · nonDerivative · entry 1

Lightspeed Ultimate General Partner Select, Ltd. · CIK 0001700544 · 10% owner

Lightspeed Venture Partners Select, L.P. · CIK 0001602575 · 10% owner

Lightspeed General Partner Select, L.P. · CIK 0001700551 · 10% owner

Eggers Barry · CIK 0001366048 · 10% owner

Liew Jeremy · CIK 0001700539 · 10% owner

Mhatre Ravi · CIK 0001366050 · 10% owner

Nieh Peter · CIK 0001366051 · 10% owner

SCHAEPE CHRISTOPHER J · CIK 0001185068 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Lightspeed Venture Partners Select, L.P.

Disclosed balance after: 2,046,035

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F2 · ownership.nature: The shares are directly held by Lightspeed Venture Partners Select, L.P. Lightspeed Ultimate General Partner Select, Ltd. ("LUGP Select") is the sole general partner of Lightspeed General Partner Select, L.P., which is the sole general partner of Lightspeed Venture Partners Select, L.P. Barry Eggers, Jeremy Liew, Ravi Mhatre, Peter Nieh and Christopher J. Schaepe are the directors of LUGP Select and share voting and dispositive power with respect to the shares held by Lightspeed Venture Partners Select, L.P. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012499 · wf-form4a_153929391261003.xml · derivative · entry 12

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SC U.S. VENTURE 2010 MANAGEMENT, L.P. · CIK 0001611355 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. · CIK 0001563112 · 10% owner

SEQUOIA CAPITAL SCOUT FUND II, L.L.C. · CIK 0001611358 · 10% owner

Sandscape, LLC · CIK 0001744933 · 10% owner

SC U.S. VENTURE XIV MANAGEMENT, L.P. · CIK 0001611397 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE FUND XIV, L.P. · CIK 0001556027 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV, L.P. · CIK 0001556219 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV (Q), L.P. · CIK 0001561342 · 10% owner

SEQUOIA CAPITAL USV XIV HOLDCO, LTD. · CIK 0001611394 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Sequoia Capital USV XIV Holdco, Ltd.

Disclosed balance after: 0

Underlying: COMMON STOCK · 44,866 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F4 · ownership.nature: The shares are directly held by Sequoia Capital USV XIV Holdco, Ltd., or SC USV XIV Holdco. SC US (TTGP), Ltd. is the general partner of SC U.S. Venture XIV Management, L.P., which is the general partner of each of Sequoia Capital U.S. Venture Fund XIV, L.P., Sequoia Capital U.S. Venture Partners Fund XIV, L.P. and Sequoia Capital U.S. Venture Partners Fund XIV (Q), L.P., or collectively, the SC USV XIV Funds. The SC USV XIV Funds together own 100% of the outstanding ordinary shares of SC USV XIV Holdco. As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by SC USV XIV Holdco. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012499 · wf-form4a_153929391261003.xml · derivative · entry 11

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SC U.S. VENTURE 2010 MANAGEMENT, L.P. · CIK 0001611355 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. · CIK 0001563112 · 10% owner

SEQUOIA CAPITAL SCOUT FUND II, L.L.C. · CIK 0001611358 · 10% owner

Sandscape, LLC · CIK 0001744933 · 10% owner

SC U.S. VENTURE XIV MANAGEMENT, L.P. · CIK 0001611397 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE FUND XIV, L.P. · CIK 0001556027 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV, L.P. · CIK 0001556219 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV (Q), L.P. · CIK 0001561342 · 10% owner

SEQUOIA CAPITAL USV XIV HOLDCO, LTD. · CIK 0001611394 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Sequoia Capital USV XIV Holdco, Ltd.

Disclosed balance after: 0

Underlying: COMMON STOCK · 508,497 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F4 · ownership.nature: The shares are directly held by Sequoia Capital USV XIV Holdco, Ltd., or SC USV XIV Holdco. SC US (TTGP), Ltd. is the general partner of SC U.S. Venture XIV Management, L.P., which is the general partner of each of Sequoia Capital U.S. Venture Fund XIV, L.P., Sequoia Capital U.S. Venture Partners Fund XIV, L.P. and Sequoia Capital U.S. Venture Partners Fund XIV (Q), L.P., or collectively, the SC USV XIV Funds. The SC USV XIV Funds together own 100% of the outstanding ordinary shares of SC USV XIV Holdco. As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by SC USV XIV Holdco. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012499 · wf-form4a_153929391261003.xml · derivative · entry 10

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SC U.S. VENTURE 2010 MANAGEMENT, L.P. · CIK 0001611355 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. · CIK 0001563112 · 10% owner

SEQUOIA CAPITAL SCOUT FUND II, L.L.C. · CIK 0001611358 · 10% owner

Sandscape, LLC · CIK 0001744933 · 10% owner

SC U.S. VENTURE XIV MANAGEMENT, L.P. · CIK 0001611397 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE FUND XIV, L.P. · CIK 0001556027 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV, L.P. · CIK 0001556219 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV (Q), L.P. · CIK 0001561342 · 10% owner

SEQUOIA CAPITAL USV XIV HOLDCO, LTD. · CIK 0001611394 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Sequoia Capital USV XIV Holdco, Ltd.

Disclosed balance after: 0

Underlying: COMMON STOCK · 233,832 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F4 · ownership.nature: The shares are directly held by Sequoia Capital USV XIV Holdco, Ltd., or SC USV XIV Holdco. SC US (TTGP), Ltd. is the general partner of SC U.S. Venture XIV Management, L.P., which is the general partner of each of Sequoia Capital U.S. Venture Fund XIV, L.P., Sequoia Capital U.S. Venture Partners Fund XIV, L.P. and Sequoia Capital U.S. Venture Partners Fund XIV (Q), L.P., or collectively, the SC USV XIV Funds. The SC USV XIV Funds together own 100% of the outstanding ordinary shares of SC USV XIV Holdco. As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by SC USV XIV Holdco. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012499 · wf-form4a_153929391261003.xml · derivative · entry 9

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SC U.S. VENTURE 2010 MANAGEMENT, L.P. · CIK 0001611355 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. · CIK 0001563112 · 10% owner

SEQUOIA CAPITAL SCOUT FUND II, L.L.C. · CIK 0001611358 · 10% owner

Sandscape, LLC · CIK 0001744933 · 10% owner

SC U.S. VENTURE XIV MANAGEMENT, L.P. · CIK 0001611397 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE FUND XIV, L.P. · CIK 0001556027 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV, L.P. · CIK 0001556219 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV (Q), L.P. · CIK 0001561342 · 10% owner

SEQUOIA CAPITAL USV XIV HOLDCO, LTD. · CIK 0001611394 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Sequoia Capital USV XIV Holdco, Ltd.

Disclosed balance after: 0

Underlying: COMMON STOCK · 1,402,994 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F4 · ownership.nature: The shares are directly held by Sequoia Capital USV XIV Holdco, Ltd., or SC USV XIV Holdco. SC US (TTGP), Ltd. is the general partner of SC U.S. Venture XIV Management, L.P., which is the general partner of each of Sequoia Capital U.S. Venture Fund XIV, L.P., Sequoia Capital U.S. Venture Partners Fund XIV, L.P. and Sequoia Capital U.S. Venture Partners Fund XIV (Q), L.P., or collectively, the SC USV XIV Funds. The SC USV XIV Funds together own 100% of the outstanding ordinary shares of SC USV XIV Holdco. As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by SC USV XIV Holdco. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012499 · wf-form4a_153929391261003.xml · derivative · entry 8

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SC U.S. VENTURE 2010 MANAGEMENT, L.P. · CIK 0001611355 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. · CIK 0001563112 · 10% owner

SEQUOIA CAPITAL SCOUT FUND II, L.L.C. · CIK 0001611358 · 10% owner

Sandscape, LLC · CIK 0001744933 · 10% owner

SC U.S. VENTURE XIV MANAGEMENT, L.P. · CIK 0001611397 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE FUND XIV, L.P. · CIK 0001556027 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV, L.P. · CIK 0001556219 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV (Q), L.P. · CIK 0001561342 · 10% owner

SEQUOIA CAPITAL USV XIV HOLDCO, LTD. · CIK 0001611394 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Sequoia Capital USV XIV Holdco, Ltd.

Disclosed balance after: 0

Underlying: COMMON STOCK · 5,564,701 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F4 · ownership.nature: The shares are directly held by Sequoia Capital USV XIV Holdco, Ltd., or SC USV XIV Holdco. SC US (TTGP), Ltd. is the general partner of SC U.S. Venture XIV Management, L.P., which is the general partner of each of Sequoia Capital U.S. Venture Fund XIV, L.P., Sequoia Capital U.S. Venture Partners Fund XIV, L.P. and Sequoia Capital U.S. Venture Partners Fund XIV (Q), L.P., or collectively, the SC USV XIV Funds. The SC USV XIV Funds together own 100% of the outstanding ordinary shares of SC USV XIV Holdco. As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by SC USV XIV Holdco. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012499 · wf-form4a_153929391261003.xml · derivative · entry 7

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SC U.S. VENTURE 2010 MANAGEMENT, L.P. · CIK 0001611355 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. · CIK 0001563112 · 10% owner

SEQUOIA CAPITAL SCOUT FUND II, L.L.C. · CIK 0001611358 · 10% owner

Sandscape, LLC · CIK 0001744933 · 10% owner

SC U.S. VENTURE XIV MANAGEMENT, L.P. · CIK 0001611397 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE FUND XIV, L.P. · CIK 0001556027 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV, L.P. · CIK 0001556219 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV (Q), L.P. · CIK 0001561342 · 10% owner

SEQUOIA CAPITAL USV XIV HOLDCO, LTD. · CIK 0001611394 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Sandscape, LLC

Disclosed balance after: 0

Underlying: COMMON STOCK · 13,264 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F3 · ownership.nature: The shares are directly held by Sandscape, LLC. SC US (TTGP), Ltd. is the general partner of SC US Venture 2010 Management, L.P., which is the general partner of Sequoia Capital U.S. Venture 2010-Seed Fund, L.P., which is the managing member of Sequoia Capital Scout Fund II, L.L.C., which is the managing member of Sandscape, LLC. As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by Sandscape, LLC. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012499 · wf-form4a_153929391261003.xml · nonDerivative · entry 6

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SC U.S. VENTURE 2010 MANAGEMENT, L.P. · CIK 0001611355 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. · CIK 0001563112 · 10% owner

SEQUOIA CAPITAL SCOUT FUND II, L.L.C. · CIK 0001611358 · 10% owner

Sandscape, LLC · CIK 0001744933 · 10% owner

SC U.S. VENTURE XIV MANAGEMENT, L.P. · CIK 0001611397 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE FUND XIV, L.P. · CIK 0001556027 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV, L.P. · CIK 0001556219 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV (Q), L.P. · CIK 0001561342 · 10% owner

SEQUOIA CAPITAL USV XIV HOLDCO, LTD. · CIK 0001611394 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Sequoia Capital USV XIV Holdco, Ltd.

Disclosed balance after: 44,866

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F4 · ownership.nature: The shares are directly held by Sequoia Capital USV XIV Holdco, Ltd., or SC USV XIV Holdco. SC US (TTGP), Ltd. is the general partner of SC U.S. Venture XIV Management, L.P., which is the general partner of each of Sequoia Capital U.S. Venture Fund XIV, L.P., Sequoia Capital U.S. Venture Partners Fund XIV, L.P. and Sequoia Capital U.S. Venture Partners Fund XIV (Q), L.P., or collectively, the SC USV XIV Funds. The SC USV XIV Funds together own 100% of the outstanding ordinary shares of SC USV XIV Holdco. As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by SC USV XIV Holdco. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012499 · wf-form4a_153929391261003.xml · nonDerivative · entry 5

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SC U.S. VENTURE 2010 MANAGEMENT, L.P. · CIK 0001611355 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. · CIK 0001563112 · 10% owner

SEQUOIA CAPITAL SCOUT FUND II, L.L.C. · CIK 0001611358 · 10% owner

Sandscape, LLC · CIK 0001744933 · 10% owner

SC U.S. VENTURE XIV MANAGEMENT, L.P. · CIK 0001611397 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE FUND XIV, L.P. · CIK 0001556027 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV, L.P. · CIK 0001556219 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV (Q), L.P. · CIK 0001561342 · 10% owner

SEQUOIA CAPITAL USV XIV HOLDCO, LTD. · CIK 0001611394 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Sequoia Capital USV XIV Holdco, Ltd.

Disclosed balance after: 508,497

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F4 · ownership.nature: The shares are directly held by Sequoia Capital USV XIV Holdco, Ltd., or SC USV XIV Holdco. SC US (TTGP), Ltd. is the general partner of SC U.S. Venture XIV Management, L.P., which is the general partner of each of Sequoia Capital U.S. Venture Fund XIV, L.P., Sequoia Capital U.S. Venture Partners Fund XIV, L.P. and Sequoia Capital U.S. Venture Partners Fund XIV (Q), L.P., or collectively, the SC USV XIV Funds. The SC USV XIV Funds together own 100% of the outstanding ordinary shares of SC USV XIV Holdco. As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by SC USV XIV Holdco. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012499 · wf-form4a_153929391261003.xml · nonDerivative · entry 4

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SC U.S. VENTURE 2010 MANAGEMENT, L.P. · CIK 0001611355 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. · CIK 0001563112 · 10% owner

SEQUOIA CAPITAL SCOUT FUND II, L.L.C. · CIK 0001611358 · 10% owner

Sandscape, LLC · CIK 0001744933 · 10% owner

SC U.S. VENTURE XIV MANAGEMENT, L.P. · CIK 0001611397 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE FUND XIV, L.P. · CIK 0001556027 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV, L.P. · CIK 0001556219 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV (Q), L.P. · CIK 0001561342 · 10% owner

SEQUOIA CAPITAL USV XIV HOLDCO, LTD. · CIK 0001611394 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Sequoia Capital USV XIV Holdco, Ltd.

Disclosed balance after: 233,832

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F4 · ownership.nature: The shares are directly held by Sequoia Capital USV XIV Holdco, Ltd., or SC USV XIV Holdco. SC US (TTGP), Ltd. is the general partner of SC U.S. Venture XIV Management, L.P., which is the general partner of each of Sequoia Capital U.S. Venture Fund XIV, L.P., Sequoia Capital U.S. Venture Partners Fund XIV, L.P. and Sequoia Capital U.S. Venture Partners Fund XIV (Q), L.P., or collectively, the SC USV XIV Funds. The SC USV XIV Funds together own 100% of the outstanding ordinary shares of SC USV XIV Holdco. As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by SC USV XIV Holdco. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012499 · wf-form4a_153929391261003.xml · nonDerivative · entry 3

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SC U.S. VENTURE 2010 MANAGEMENT, L.P. · CIK 0001611355 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. · CIK 0001563112 · 10% owner

SEQUOIA CAPITAL SCOUT FUND II, L.L.C. · CIK 0001611358 · 10% owner

Sandscape, LLC · CIK 0001744933 · 10% owner

SC U.S. VENTURE XIV MANAGEMENT, L.P. · CIK 0001611397 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE FUND XIV, L.P. · CIK 0001556027 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV, L.P. · CIK 0001556219 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV (Q), L.P. · CIK 0001561342 · 10% owner

SEQUOIA CAPITAL USV XIV HOLDCO, LTD. · CIK 0001611394 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Sequoia Capital USV XIV Holdco, Ltd.

Disclosed balance after: 1,402,994

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F4 · ownership.nature: The shares are directly held by Sequoia Capital USV XIV Holdco, Ltd., or SC USV XIV Holdco. SC US (TTGP), Ltd. is the general partner of SC U.S. Venture XIV Management, L.P., which is the general partner of each of Sequoia Capital U.S. Venture Fund XIV, L.P., Sequoia Capital U.S. Venture Partners Fund XIV, L.P. and Sequoia Capital U.S. Venture Partners Fund XIV (Q), L.P., or collectively, the SC USV XIV Funds. The SC USV XIV Funds together own 100% of the outstanding ordinary shares of SC USV XIV Holdco. As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by SC USV XIV Holdco. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012499 · wf-form4a_153929391261003.xml · nonDerivative · entry 2

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SC U.S. VENTURE 2010 MANAGEMENT, L.P. · CIK 0001611355 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. · CIK 0001563112 · 10% owner

SEQUOIA CAPITAL SCOUT FUND II, L.L.C. · CIK 0001611358 · 10% owner

Sandscape, LLC · CIK 0001744933 · 10% owner

SC U.S. VENTURE XIV MANAGEMENT, L.P. · CIK 0001611397 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE FUND XIV, L.P. · CIK 0001556027 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV, L.P. · CIK 0001556219 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV (Q), L.P. · CIK 0001561342 · 10% owner

SEQUOIA CAPITAL USV XIV HOLDCO, LTD. · CIK 0001611394 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Sequoia Capital USV XIV Holdco, Ltd.

Disclosed balance after: 5,564,701

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F4 · ownership.nature: The shares are directly held by Sequoia Capital USV XIV Holdco, Ltd., or SC USV XIV Holdco. SC US (TTGP), Ltd. is the general partner of SC U.S. Venture XIV Management, L.P., which is the general partner of each of Sequoia Capital U.S. Venture Fund XIV, L.P., Sequoia Capital U.S. Venture Partners Fund XIV, L.P. and Sequoia Capital U.S. Venture Partners Fund XIV (Q), L.P., or collectively, the SC USV XIV Funds. The SC USV XIV Funds together own 100% of the outstanding ordinary shares of SC USV XIV Holdco. As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by SC USV XIV Holdco. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012499 · wf-form4a_153929391261003.xml · nonDerivative · entry 1

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SC U.S. VENTURE 2010 MANAGEMENT, L.P. · CIK 0001611355 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. · CIK 0001563112 · 10% owner

SEQUOIA CAPITAL SCOUT FUND II, L.L.C. · CIK 0001611358 · 10% owner

Sandscape, LLC · CIK 0001744933 · 10% owner

SC U.S. VENTURE XIV MANAGEMENT, L.P. · CIK 0001611397 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE FUND XIV, L.P. · CIK 0001556027 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV, L.P. · CIK 0001556219 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV (Q), L.P. · CIK 0001561342 · 10% owner

SEQUOIA CAPITAL USV XIV HOLDCO, LTD. · CIK 0001611394 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Sandscape, LLC

Disclosed balance after: 29,162

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F2 · balance_after: This Form 4 is being amended to reflect the correct total number of shares of the Issuer's Common Stock held by Sandscape, LLC following the transactions reported herein.

F3 · ownership.nature: The shares are directly held by Sandscape, LLC. SC US (TTGP), Ltd. is the general partner of SC US Venture 2010 Management, L.P., which is the general partner of Sequoia Capital U.S. Venture 2010-Seed Fund, L.P., which is the managing member of Sequoia Capital Scout Fund II, L.L.C., which is the managing member of Sandscape, LLC. As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by Sandscape, LLC. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012467 · wf-form4_153927853046265.xml · derivative · entry 12

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SC U.S. VENTURE 2010 MANAGEMENT, L.P. · CIK 0001611355 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. · CIK 0001563112 · 10% owner

SEQUOIA CAPITAL SCOUT FUND II, L.L.C. · CIK 0001611358 · 10% owner

Sandscape, LLC · CIK 0001744933 · 10% owner

SC U.S. VENTURE XIV MANAGEMENT, L.P. · CIK 0001611397 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE FUND XIV, L.P. · CIK 0001556027 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV, L.P. · CIK 0001556219 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV (Q), L.P. · CIK 0001561342 · 10% owner

SEQUOIA CAPITAL USV XIV HOLDCO, LTD. · CIK 0001611394 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Sequoia Capital USV XIV Holdco, Ltd.

Disclosed balance after: 0

Underlying: COMMON STOCK · 44,866 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F3 · ownership.nature: The shares are directly held by Sequoia Capital USV XIV Holdco, Ltd., or SC USV XIV Holdco. SC US (TTGP), Ltd. is the general partner of SC U.S. Venture XIV Management, L.P., which is the general partner of each of Sequoia Capital U.S. Venture Fund XIV, L.P., Sequoia Capital U.S. Venture Partners Fund XIV, L.P. and Sequoia Capital U.S. Venture Partners Fund XIV (Q), L.P., or collectively, the SC USV XIV Funds. The SC USV XIV Funds together own 100% of the outstanding ordinary shares of SC USV XIV Holdco. As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by SC USV XIV Holdco. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012467 · wf-form4_153927853046265.xml · derivative · entry 11

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SC U.S. VENTURE 2010 MANAGEMENT, L.P. · CIK 0001611355 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. · CIK 0001563112 · 10% owner

SEQUOIA CAPITAL SCOUT FUND II, L.L.C. · CIK 0001611358 · 10% owner

Sandscape, LLC · CIK 0001744933 · 10% owner

SC U.S. VENTURE XIV MANAGEMENT, L.P. · CIK 0001611397 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE FUND XIV, L.P. · CIK 0001556027 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV, L.P. · CIK 0001556219 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV (Q), L.P. · CIK 0001561342 · 10% owner

SEQUOIA CAPITAL USV XIV HOLDCO, LTD. · CIK 0001611394 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Sequoia Capital USV XIV Holdco, Ltd.

Disclosed balance after: 0

Underlying: COMMON STOCK · 508,497 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F3 · ownership.nature: The shares are directly held by Sequoia Capital USV XIV Holdco, Ltd., or SC USV XIV Holdco. SC US (TTGP), Ltd. is the general partner of SC U.S. Venture XIV Management, L.P., which is the general partner of each of Sequoia Capital U.S. Venture Fund XIV, L.P., Sequoia Capital U.S. Venture Partners Fund XIV, L.P. and Sequoia Capital U.S. Venture Partners Fund XIV (Q), L.P., or collectively, the SC USV XIV Funds. The SC USV XIV Funds together own 100% of the outstanding ordinary shares of SC USV XIV Holdco. As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by SC USV XIV Holdco. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012467 · wf-form4_153927853046265.xml · derivative · entry 10

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SC U.S. VENTURE 2010 MANAGEMENT, L.P. · CIK 0001611355 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. · CIK 0001563112 · 10% owner

SEQUOIA CAPITAL SCOUT FUND II, L.L.C. · CIK 0001611358 · 10% owner

Sandscape, LLC · CIK 0001744933 · 10% owner

SC U.S. VENTURE XIV MANAGEMENT, L.P. · CIK 0001611397 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE FUND XIV, L.P. · CIK 0001556027 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV, L.P. · CIK 0001556219 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV (Q), L.P. · CIK 0001561342 · 10% owner

SEQUOIA CAPITAL USV XIV HOLDCO, LTD. · CIK 0001611394 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Sequoia Capital USV XIV Holdco, Ltd.

Disclosed balance after: 0

Underlying: COMMON STOCK · 233,832 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F3 · ownership.nature: The shares are directly held by Sequoia Capital USV XIV Holdco, Ltd., or SC USV XIV Holdco. SC US (TTGP), Ltd. is the general partner of SC U.S. Venture XIV Management, L.P., which is the general partner of each of Sequoia Capital U.S. Venture Fund XIV, L.P., Sequoia Capital U.S. Venture Partners Fund XIV, L.P. and Sequoia Capital U.S. Venture Partners Fund XIV (Q), L.P., or collectively, the SC USV XIV Funds. The SC USV XIV Funds together own 100% of the outstanding ordinary shares of SC USV XIV Holdco. As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by SC USV XIV Holdco. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012467 · wf-form4_153927853046265.xml · derivative · entry 9

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SC U.S. VENTURE 2010 MANAGEMENT, L.P. · CIK 0001611355 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. · CIK 0001563112 · 10% owner

SEQUOIA CAPITAL SCOUT FUND II, L.L.C. · CIK 0001611358 · 10% owner

Sandscape, LLC · CIK 0001744933 · 10% owner

SC U.S. VENTURE XIV MANAGEMENT, L.P. · CIK 0001611397 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE FUND XIV, L.P. · CIK 0001556027 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV, L.P. · CIK 0001556219 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV (Q), L.P. · CIK 0001561342 · 10% owner

SEQUOIA CAPITAL USV XIV HOLDCO, LTD. · CIK 0001611394 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Sequoia Capital USV XIV Holdco, Ltd.

Disclosed balance after: 0

Underlying: COMMON STOCK · 1,402,994 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F3 · ownership.nature: The shares are directly held by Sequoia Capital USV XIV Holdco, Ltd., or SC USV XIV Holdco. SC US (TTGP), Ltd. is the general partner of SC U.S. Venture XIV Management, L.P., which is the general partner of each of Sequoia Capital U.S. Venture Fund XIV, L.P., Sequoia Capital U.S. Venture Partners Fund XIV, L.P. and Sequoia Capital U.S. Venture Partners Fund XIV (Q), L.P., or collectively, the SC USV XIV Funds. The SC USV XIV Funds together own 100% of the outstanding ordinary shares of SC USV XIV Holdco. As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by SC USV XIV Holdco. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012467 · wf-form4_153927853046265.xml · derivative · entry 8

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SC U.S. VENTURE 2010 MANAGEMENT, L.P. · CIK 0001611355 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. · CIK 0001563112 · 10% owner

SEQUOIA CAPITAL SCOUT FUND II, L.L.C. · CIK 0001611358 · 10% owner

Sandscape, LLC · CIK 0001744933 · 10% owner

SC U.S. VENTURE XIV MANAGEMENT, L.P. · CIK 0001611397 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE FUND XIV, L.P. · CIK 0001556027 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV, L.P. · CIK 0001556219 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV (Q), L.P. · CIK 0001561342 · 10% owner

SEQUOIA CAPITAL USV XIV HOLDCO, LTD. · CIK 0001611394 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Sequoia Capital USV XIV Holdco, Ltd.

Disclosed balance after: 0

Underlying: COMMON STOCK · 5,564,701 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F3 · ownership.nature: The shares are directly held by Sequoia Capital USV XIV Holdco, Ltd., or SC USV XIV Holdco. SC US (TTGP), Ltd. is the general partner of SC U.S. Venture XIV Management, L.P., which is the general partner of each of Sequoia Capital U.S. Venture Fund XIV, L.P., Sequoia Capital U.S. Venture Partners Fund XIV, L.P. and Sequoia Capital U.S. Venture Partners Fund XIV (Q), L.P., or collectively, the SC USV XIV Funds. The SC USV XIV Funds together own 100% of the outstanding ordinary shares of SC USV XIV Holdco. As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by SC USV XIV Holdco. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012467 · wf-form4_153927853046265.xml · derivative · entry 7

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SC U.S. VENTURE 2010 MANAGEMENT, L.P. · CIK 0001611355 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. · CIK 0001563112 · 10% owner

SEQUOIA CAPITAL SCOUT FUND II, L.L.C. · CIK 0001611358 · 10% owner

Sandscape, LLC · CIK 0001744933 · 10% owner

SC U.S. VENTURE XIV MANAGEMENT, L.P. · CIK 0001611397 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE FUND XIV, L.P. · CIK 0001556027 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV, L.P. · CIK 0001556219 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV (Q), L.P. · CIK 0001561342 · 10% owner

SEQUOIA CAPITAL USV XIV HOLDCO, LTD. · CIK 0001611394 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Sandscape, LLC

Disclosed balance after: 0

Underlying: COMMON STOCK · 13,264 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.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F2 · ownership.nature: The shares are directly held by Sandscape, LLC. SC US (TTGP), Ltd. is the general partner of SC US Venture 2010 Management, L.P., which is the general partner of Sequoia Capital U.S. Venture 2010-Seed Fund, L.P., which is the managing member of Sequoia Capital Scout Fund II, L.L.C., which is the managing member of Sandscape, LLC. As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by Sandscape, LLC. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012467 · wf-form4_153927853046265.xml · nonDerivative · entry 6

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SC U.S. VENTURE 2010 MANAGEMENT, L.P. · CIK 0001611355 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. · CIK 0001563112 · 10% owner

SEQUOIA CAPITAL SCOUT FUND II, L.L.C. · CIK 0001611358 · 10% owner

Sandscape, LLC · CIK 0001744933 · 10% owner

SC U.S. VENTURE XIV MANAGEMENT, L.P. · CIK 0001611397 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE FUND XIV, L.P. · CIK 0001556027 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV, L.P. · CIK 0001556219 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV (Q), L.P. · CIK 0001561342 · 10% owner

SEQUOIA CAPITAL USV XIV HOLDCO, LTD. · CIK 0001611394 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Sequoia Capital USV XIV Holdco, Ltd.

Disclosed balance after: 44,866

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F3 · ownership.nature: The shares are directly held by Sequoia Capital USV XIV Holdco, Ltd., or SC USV XIV Holdco. SC US (TTGP), Ltd. is the general partner of SC U.S. Venture XIV Management, L.P., which is the general partner of each of Sequoia Capital U.S. Venture Fund XIV, L.P., Sequoia Capital U.S. Venture Partners Fund XIV, L.P. and Sequoia Capital U.S. Venture Partners Fund XIV (Q), L.P., or collectively, the SC USV XIV Funds. The SC USV XIV Funds together own 100% of the outstanding ordinary shares of SC USV XIV Holdco. As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by SC USV XIV Holdco. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.

SEC source: 0001628280-18-012467 · wf-form4_153927853046265.xml · nonDerivative · entry 5

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SC U.S. VENTURE 2010 MANAGEMENT, L.P. · CIK 0001611355 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. · CIK 0001563112 · 10% owner

SEQUOIA CAPITAL SCOUT FUND II, L.L.C. · CIK 0001611358 · 10% owner

Sandscape, LLC · CIK 0001744933 · 10% owner

SC U.S. VENTURE XIV MANAGEMENT, L.P. · CIK 0001611397 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE FUND XIV, L.P. · CIK 0001556027 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV, L.P. · CIK 0001556219 · 10% owner

SEQUOIA CAPITAL U.S. VENTURE PARTNERS FUND XIV (Q), L.P. · CIK 0001561342 · 10% owner

SEQUOIA CAPITAL USV XIV HOLDCO, LTD. · CIK 0001611394 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Sequoia Capital USV XIV Holdco, Ltd.

Disclosed balance after: 508,497

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.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F3 · ownership.nature: The shares are directly held by Sequoia Capital USV XIV Holdco, Ltd., or SC USV XIV Holdco. SC US (TTGP), Ltd. is the general partner of SC U.S. Venture XIV Management, L.P., which is the general partner of each of Sequoia Capital U.S. Venture Fund XIV, L.P., Sequoia Capital U.S. Venture Partners Fund XIV, L.P. and Sequoia Capital U.S. Venture Partners Fund XIV (Q), L.P., or collectively, the SC USV XIV Funds. The SC USV XIV Funds together own 100% of the outstanding ordinary shares of SC USV XIV Holdco. As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by SC USV XIV Holdco. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its 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 purposes.