AMPL

SEC source: 0001104659-21-140211 · tm2133136d3_4.xml · nonDerivative · entry 3

Vishria Eric · CIK 0001617474 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 228,133

F3 · kind: Represents a pro-rata, in-kind distribution by BCP VIII and its affiliated funds, not for additional consideration, to its partners, including BCMC VIII and its respective members and assignees.

F4 · ownership.nature: Shares are held by entities controlled by the reporting person.

SEC source: 0001104659-21-140211 · tm2133136d3_4.xml · nonDerivative · entry 2

Vishria Eric · CIK 0001617474 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

F3 · kind: Represents a pro-rata, in-kind distribution by BCP VIII and its affiliated funds, not for additional consideration, to its partners, including BCMC VIII and its respective members and assignees.

F2 · ownership.nature: Shares are held directly by Benchmark Capital Partners VIII, L.P. ("BCP VIII") for itself and as nominee for Benchmark Founders' Fund VIII, L.P. ("BFF VIII") and Benchmark Founders' Fund VIII-B, L.P. ("BFF VIII-B"). Benchmark Capital Management Co. VIII, L.L.C. ("BCMC VIII"), the general partner of BCP VIII, BFF VIII and BFF VIII-B, may be deemed to have sole voting and dispositive power over the securities. Eric Vishria, a member of the Issuer's board of directors, Matthew R. Cohler, Peter H. Fenton, J. William Gurley, An-Yen Hu, Mitchell H. Lasky, Chetan Puttagunta, Steven M. Spurlock and Sarah E. Tavel are the managing members of BCMC VIII, and each of them may be deemed to share voting and dispositive power over the securities held by such entities. Each such person and entity disclaims the existence of a "group" and disclaims beneficial ownership of the securities, except to the extent of such person's or entity's pecuniary interest in such securities.

SEC source: 0001104659-21-140211 · tm2133136d3_4.xml · nonDerivative · entry 1

Vishria Eric · CIK 0001617474 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 3,000,000

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 · kind: Conversion of a derivative security in accordance of its terms.

F2 · ownership.nature: Shares are held directly by Benchmark Capital Partners VIII, L.P. ("BCP VIII") for itself and as nominee for Benchmark Founders' Fund VIII, L.P. ("BFF VIII") and Benchmark Founders' Fund VIII-B, L.P. ("BFF VIII-B"). Benchmark Capital Management Co. VIII, L.L.C. ("BCMC VIII"), the general partner of BCP VIII, BFF VIII and BFF VIII-B, may be deemed to have sole voting and dispositive power over the securities. Eric Vishria, a member of the Issuer's board of directors, Matthew R. Cohler, Peter H. Fenton, J. William Gurley, An-Yen Hu, Mitchell H. Lasky, Chetan Puttagunta, Steven M. Spurlock and Sarah E. Tavel are the managing members of BCMC VIII, and each of them may be deemed to share voting and dispositive power over the securities held by such entities. Each such person and entity disclaims the existence of a "group" and disclaims beneficial ownership of the securities, except to the extent of such person's or entity's pecuniary interest in such securities.

SEC source: 0001104659-21-140208 · tm2133136d1_4.xml · derivative · entry 3

Benchmark Capital Management Co. VIII, L.L.C. · CIK 0001593049 · 10% owner

Benchmark Capital Partners VIII, L.P. · CIK 0001593052 · 10% owner

Benchmark Founders' Fund VIII, L.P. · CIK 0001597415 · 10% owner

Benchmark Founders' Fund VIII-B, L.P. · CIK 0001597399 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 9,264,298

Underlying: Class A Common Stock · 3,000,000 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.

F4 · derivative.exercise_price: The Class B Common Stock is convertible at any time at the option of the holder into the Issuer's Class A Common Stock on a one-to-one basis. The Class B Common Stock will convert automatically into shares of the Issuer's Class A Common Stock on a one-to-one basis upon the earlier of (a) any transfer of the Class B Common Stock by the holder, whether or not for value, subject to certain exceptions or (b) the date that is six months following the date on which none of the Issuer's founders is an employee or director of the Issuer (unless a founder has rejoined the Issuer during such six-month period).

F4 · derivative.exercise_date: The Class B Common Stock is convertible at any time at the option of the holder into the Issuer's Class A Common Stock on a one-to-one basis. The Class B Common Stock will convert automatically into shares of the Issuer's Class A Common Stock on a one-to-one basis upon the earlier of (a) any transfer of the Class B Common Stock by the holder, whether or not for value, subject to certain exceptions or (b) the date that is six months following the date on which none of the Issuer's founders is an employee or director of the Issuer (unless a founder has rejoined the Issuer during such six-month period).

F4 · derivative.expiration_date: The Class B Common Stock is convertible at any time at the option of the holder into the Issuer's Class A Common Stock on a one-to-one basis. The Class B Common Stock will convert automatically into shares of the Issuer's Class A Common Stock on a one-to-one basis upon the earlier of (a) any transfer of the Class B Common Stock by the holder, whether or not for value, subject to certain exceptions or (b) the date that is six months following the date on which none of the Issuer's founders is an employee or director of the Issuer (unless a founder has rejoined the Issuer during such six-month period).

F2 · ownership.nature: Shares are held directly by Benchmark Capital Partners VIII, L.P. ("BCP VIII") for itself and as nominee for Benchmark Founders' Fund VIII, L.P. ("BFF VIII") and Benchmark Founders' Fund VIII-B, L.P. ("BFF VIII-B"). Benchmark Capital Management Co. VIII, L.L.C. ("BCMC VIII"), the general partner of BCP VIII, BFF VIII and BFF VIII-B, may be deemed to have sole voting and dispositive power over the securities. Eric Vishria, a member of the Issuer's board of directors, Matthew R. Cohler, Peter H. Fenton, J. William Gurley, An-Yen Hu, Mitchell H. Lasky, Chetan Puttagunta, Steven M. Spurlock and Sarah E. Tavel are the managing members of BCMC VIII, and each of them may be deemed to share voting and dispositive power over the securities held by such entities. Each such person and entity disclaims the existence of a "group" and disclaims beneficial ownership of the securities, except to the extent of such person's or entity's pecuniary interest in such securities.

SEC source: 0001104659-21-140208 · tm2133136d1_4.xml · nonDerivative · entry 2

Benchmark Capital Management Co. VIII, L.L.C. · CIK 0001593049 · 10% owner

Benchmark Capital Partners VIII, L.P. · CIK 0001593052 · 10% owner

Benchmark Founders' Fund VIII, L.P. · CIK 0001597415 · 10% owner

Benchmark Founders' Fund VIII-B, L.P. · CIK 0001597399 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

F3 · kind: Represents a pro-rata, in-kind distribution by BCP VIII and its affiliated funds, not for additional consideration, to its partners, including BCMC VIII and its respective members and assignees.

F2 · ownership.nature: Shares are held directly by Benchmark Capital Partners VIII, L.P. ("BCP VIII") for itself and as nominee for Benchmark Founders' Fund VIII, L.P. ("BFF VIII") and Benchmark Founders' Fund VIII-B, L.P. ("BFF VIII-B"). Benchmark Capital Management Co. VIII, L.L.C. ("BCMC VIII"), the general partner of BCP VIII, BFF VIII and BFF VIII-B, may be deemed to have sole voting and dispositive power over the securities. Eric Vishria, a member of the Issuer's board of directors, Matthew R. Cohler, Peter H. Fenton, J. William Gurley, An-Yen Hu, Mitchell H. Lasky, Chetan Puttagunta, Steven M. Spurlock and Sarah E. Tavel are the managing members of BCMC VIII, and each of them may be deemed to share voting and dispositive power over the securities held by such entities. Each such person and entity disclaims the existence of a "group" and disclaims beneficial ownership of the securities, except to the extent of such person's or entity's pecuniary interest in such securities.

SEC source: 0001104659-21-140208 · tm2133136d1_4.xml · nonDerivative · entry 1

Benchmark Capital Management Co. VIII, L.L.C. · CIK 0001593049 · 10% owner

Benchmark Capital Partners VIII, L.P. · CIK 0001593052 · 10% owner

Benchmark Founders' Fund VIII, L.P. · CIK 0001597415 · 10% owner

Benchmark Founders' Fund VIII-B, L.P. · CIK 0001597399 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 3,000,000

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 · kind: Conversion of a derivative security in accordance of its terms.

F2 · ownership.nature: Shares are held directly by Benchmark Capital Partners VIII, L.P. ("BCP VIII") for itself and as nominee for Benchmark Founders' Fund VIII, L.P. ("BFF VIII") and Benchmark Founders' Fund VIII-B, L.P. ("BFF VIII-B"). Benchmark Capital Management Co. VIII, L.L.C. ("BCMC VIII"), the general partner of BCP VIII, BFF VIII and BFF VIII-B, may be deemed to have sole voting and dispositive power over the securities. Eric Vishria, a member of the Issuer's board of directors, Matthew R. Cohler, Peter H. Fenton, J. William Gurley, An-Yen Hu, Mitchell H. Lasky, Chetan Puttagunta, Steven M. Spurlock and Sarah E. Tavel are the managing members of BCMC VIII, and each of them may be deemed to share voting and dispositive power over the securities held by such entities. Each such person and entity disclaims the existence of a "group" and disclaims beneficial ownership of the securities, except to the extent of such person's or entity's pecuniary interest in such securities.

SEC source: 0001209191-21-064538 · doc4.xml · nonDerivative · entry 11

Battery Management Corp. · CIK 0001548594 · 10% owner

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

Lee Roger H · CIK 0001404868 · 10% owner

Stoner Chelsea R. · CIK 0001741527 · 10% owner

Thakker Dharmesh · CIK 0001869544 · 10% owner

TOBIN SCOTT R · CIK 0001199926 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 8,742

F17 · kind: Represents receipt of shares in the distribution in kind described in footnotes (13) and (16).

F19 · ownership.nature: Shares are held by The Michael M. Brown Irrevocable GST Trust of 2013 (the "Trust"), of which the Reporting Person's spouse is the trustee. Michael M. Brown disclaims beneficial ownership of the shares held by the Trust except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001209191-21-064538 · doc4.xml · nonDerivative · entry 10

Battery Management Corp. · CIK 0001548594 · 10% owner

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

Lee Roger H · CIK 0001404868 · 10% owner

Stoner Chelsea R. · CIK 0001741527 · 10% owner

Thakker Dharmesh · CIK 0001869544 · 10% owner

TOBIN SCOTT R · CIK 0001199926 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,546

F17 · kind: Represents receipt of shares in the distribution in kind described in footnotes (13) and (16).

F18 · ownership.direct: Shares are held by Michael M. Brown

SEC source: 0001209191-21-064538 · doc4.xml · nonDerivative · entry 9

Battery Management Corp. · CIK 0001548594 · 10% owner

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

Lee Roger H · CIK 0001404868 · 10% owner

Stoner Chelsea R. · CIK 0001741527 · 10% owner

Thakker Dharmesh · CIK 0001869544 · 10% owner

TOBIN SCOTT R · CIK 0001199926 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

F16 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by BP XI SF to its members without consideration.

F15 · ownership.nature: Shares held by BP XI SF. BP XI SF's investment adviser is Battery Management Corp. The BP XI Managing Members are the managing members of BP XI SF and may be deemed to share voting and dispositive power over the securities held by BP XI. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of his, her 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 of for any other purpose. Mr. Agrawal is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001209191-21-064538 · doc4.xml · nonDerivative · entry 8

Battery Management Corp. · CIK 0001548594 · 10% owner

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

Lee Roger H · CIK 0001404868 · 10% owner

Stoner Chelsea R. · CIK 0001741527 · 10% owner

Thakker Dharmesh · CIK 0001869544 · 10% owner

TOBIN SCOTT R · CIK 0001199926 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 151,049

F14 · kind: Represents receipt of shares in the distribution in kind described in footnotes (5) and (9).

F15 · ownership.nature: Shares held by BP XI SF. BP XI SF's investment adviser is Battery Management Corp. The BP XI Managing Members are the managing members of BP XI SF and may be deemed to share voting and dispositive power over the securities held by BP XI. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of his, her 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 of for any other purpose. Mr. Agrawal is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001209191-21-064538 · doc4.xml · nonDerivative · entry 7

Battery Management Corp. · CIK 0001548594 · 10% owner

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

Lee Roger H · CIK 0001404868 · 10% owner

Stoner Chelsea R. · CIK 0001741527 · 10% owner

Thakker Dharmesh · CIK 0001869544 · 10% owner

TOBIN SCOTT R · CIK 0001199926 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

F13 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by BP XI to its members without consideration.

F12 · ownership.nature: Shares held by BP XI. BP XI's investment adviser is Battery Management Corp. The BP XI Managing Members are the managing members of BP XI and may be deemed to share voting and dispositive power over the securities held by BP XI. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of his, her 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 of for any other purpose. Mr. Agrawal is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001209191-21-064538 · doc4.xml · nonDerivative · entry 6

Battery Management Corp. · CIK 0001548594 · 10% owner

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

Lee Roger H · CIK 0001404868 · 10% owner

Stoner Chelsea R. · CIK 0001741527 · 10% owner

Thakker Dharmesh · CIK 0001869544 · 10% owner

TOBIN SCOTT R · CIK 0001199926 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 151,049

F11 · kind: Represents receipt of shares in the distribution in kind described in footnotes (1), (3) and (7).

F12 · ownership.nature: Shares held by BP XI. BP XI's investment adviser is Battery Management Corp. The BP XI Managing Members are the managing members of BP XI and may be deemed to share voting and dispositive power over the securities held by BP XI. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of his, her 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 of for any other purpose. Mr. Agrawal is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001209191-21-064538 · doc4.xml · nonDerivative · entry 5

Battery Management Corp. · CIK 0001548594 · 10% owner

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

Lee Roger H · CIK 0001404868 · 10% owner

Stoner Chelsea R. · CIK 0001741527 · 10% owner

Thakker Dharmesh · CIK 0001869544 · 10% owner

TOBIN SCOTT R · CIK 0001199926 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 225,420

F9 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by Battery Ventures XI-B Side Fund, L.P. to its general partner and limited partners without additional consideration.

F10 · ownership.nature: Shares held by Battery Ventures XI-B Side Fund, L.P. ("BV XI-B SF"). BP XI SF is the general partner of BV XI-B SF and may be deemed to beneficially own the shares held by BV XI-B SF. BP XI SF's investment adviser is Battery Management Corp. The BP XI Managing Members are the managing members of BP XI SF and may be deemed to share voting and dispositive power over the securities held by BP XI-B SF. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of his, her 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 of for any other purpose. Mr. Agrawal is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001209191-21-064538 · doc4.xml · nonDerivative · entry 4

Battery Management Corp. · CIK 0001548594 · 10% owner

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

Lee Roger H · CIK 0001404868 · 10% owner

Stoner Chelsea R. · CIK 0001741527 · 10% owner

Thakker Dharmesh · CIK 0001869544 · 10% owner

TOBIN SCOTT R · CIK 0001199926 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 264,382

F7 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by Battery Ventures XI-B, L.P. to its general partner and limited partners without additional consideration.

F8 · ownership.nature: Shares held by Battery Ventures XI-B, L.P. ("BV XI-B"). BP XI is the general partner of BV XI-B and may be deemed to beneficially own the shares held by BV XI-B. BP XI 's investment adviser is Battery Management Corp. The BP XI Managing Members are the managing members of BP XI and may be deemed to share voting and dispositive power over the securities held by BP XI-B. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of his, her 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 of for any other purpose. Mr. Agrawal is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001209191-21-064538 · doc4.xml · nonDerivative · entry 3

Battery Management Corp. · CIK 0001548594 · 10% owner

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

Lee Roger H · CIK 0001404868 · 10% owner

Stoner Chelsea R. · CIK 0001741527 · 10% owner

Thakker Dharmesh · CIK 0001869544 · 10% owner

TOBIN SCOTT R · CIK 0001199926 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 1,039,566

F5 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by Battery Ventures XI-A Side Fund, L.P. to its general partner and limited partners without additional consideration.

F6 · ownership.nature: Shares held by Battery Ventures XI-A Side Fund, L.P. ("BV XI-A SF"). Battery Partners XI Side Fund, LLC ("BP XI SF") is the general partner of BV XI-A SF and may be deemed to beneficially own the shares held by BV XI-A SF. BP XI SF's investment adviser is Battery Management Corp. The BP XI Managing Members are the managing members of BP XI SF and may be deemed to share voting and dispositive power over the securities held by BP XI-A SF. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of his, her 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 of for any other purpose. Mr. Agrawal is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001209191-21-064538 · doc4.xml · nonDerivative · entry 2

Battery Management Corp. · CIK 0001548594 · 10% owner

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

Lee Roger H · CIK 0001404868 · 10% owner

Stoner Chelsea R. · CIK 0001741527 · 10% owner

Thakker Dharmesh · CIK 0001869544 · 10% owner

TOBIN SCOTT R · CIK 0001199926 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 1,000,604

F3 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by Battery Ventures XI-A, L.P. to its general partner and limited partners without additional consideration.

F4 · ownership.nature: Shares held by Battery Ventures XI-A, L.P. ("BV XI-A"). BP XI is the general partner of BV XI-A and may be deemed to beneficially own the shares held by BV XI-A. BP XI's investment adviser is Battery Management Corp. The BP XI Managing Members are the managing members of BP XI and may be deemed to share voting and dispositive power over the securities held by BP XI-A. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of his, her 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 of for any other purpose. Mr. Agrawal is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001209191-21-064538 · doc4.xml · nonDerivative · entry 1

Battery Management Corp. · CIK 0001548594 · 10% owner

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

Lee Roger H · CIK 0001404868 · 10% owner

Stoner Chelsea R. · CIK 0001741527 · 10% owner

Thakker Dharmesh · CIK 0001869544 · 10% owner

TOBIN SCOTT R · CIK 0001199926 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 46,373

F1 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by Battery Investment Partners XI, LLC to its members without additional consideration.

F2 · ownership.nature: Shares held by Battery Investment Partners XI, LLC ("BIP XI"). Battery Partners XI, LLC ("BP XI") is the managing member of BIP XI and may be deemed to beneficially own the shares held by BIP XI. BP XI's investment adviser is Battery Management Corp. Neeraj Agrawal, Michael Brown, Jesse Feldman, Russell Fleischer, Roger Lee, Chelsea Stoner, Dharmesh Thakker, and Scott Tobin (collectively the "BP XI Managing Members") are the managing members of BP XI and may be deemed to share voting and dispositive power over the securities held by BIP XI. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of his, her 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 of for any other purpose. Mr. Agrawal is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001209191-21-064533 · doc4.xml · nonDerivative · entry 11

Battery Partners XI, LLC · CIK 0001870316 · 10% owner

Battery Partners XI Side Fund, LLC · CIK 0001869817 · 10% owner

Battery Investment Partners XI, LLC · CIK 0001665602 · 10% owner

Battery Ventures XI-A Side Fund, L.P. · CIK 0001665600 · 10% owner

Battery Ventures XI-A, L.P. · CIK 0001665603 · 10% owner

Battery Ventures XI-B Side Fund, L.P. · CIK 0001665599 · 10% owner

Battery Ventures XI-B, L.P. · CIK 0001665601 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 8,742

F17 · kind: Represents receipt of shares in the distribution in kind described in footnotes (13) and (16).

F19 · ownership.nature: Shares are held by The Michael M. Brown Irrevocable GST Trust of 2013 (the "Trust"), of which the Reporting Person's spouse is the trustee. Michael M. Brown disclaims beneficial ownership of the shares held by the Trust except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001209191-21-064533 · doc4.xml · nonDerivative · entry 10

Battery Partners XI, LLC · CIK 0001870316 · 10% owner

Battery Partners XI Side Fund, LLC · CIK 0001869817 · 10% owner

Battery Investment Partners XI, LLC · CIK 0001665602 · 10% owner

Battery Ventures XI-A Side Fund, L.P. · CIK 0001665600 · 10% owner

Battery Ventures XI-A, L.P. · CIK 0001665603 · 10% owner

Battery Ventures XI-B Side Fund, L.P. · CIK 0001665599 · 10% owner

Battery Ventures XI-B, L.P. · CIK 0001665601 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,546

F17 · kind: Represents receipt of shares in the distribution in kind described in footnotes (13) and (16).

F18 · ownership.direct: Shares are held by Michael M. Brown

SEC source: 0001209191-21-064533 · doc4.xml · nonDerivative · entry 9

Battery Partners XI, LLC · CIK 0001870316 · 10% owner

Battery Partners XI Side Fund, LLC · CIK 0001869817 · 10% owner

Battery Investment Partners XI, LLC · CIK 0001665602 · 10% owner

Battery Ventures XI-A Side Fund, L.P. · CIK 0001665600 · 10% owner

Battery Ventures XI-A, L.P. · CIK 0001665603 · 10% owner

Battery Ventures XI-B Side Fund, L.P. · CIK 0001665599 · 10% owner

Battery Ventures XI-B, L.P. · CIK 0001665601 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

F16 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by BP XI SF to its members without consideration.

F15 · ownership.nature: Shares held by BP XI SF. BP XI SF's investment adviser is Battery Management Corp. The BP XI Managing Members are the managing members of BP XI SF and may be deemed to share voting and dispositive power over the securities held by BP XI. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of his, her 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 of for any other purpose. Mr. Agrawal is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001209191-21-064533 · doc4.xml · nonDerivative · entry 8

Battery Partners XI, LLC · CIK 0001870316 · 10% owner

Battery Partners XI Side Fund, LLC · CIK 0001869817 · 10% owner

Battery Investment Partners XI, LLC · CIK 0001665602 · 10% owner

Battery Ventures XI-A Side Fund, L.P. · CIK 0001665600 · 10% owner

Battery Ventures XI-A, L.P. · CIK 0001665603 · 10% owner

Battery Ventures XI-B Side Fund, L.P. · CIK 0001665599 · 10% owner

Battery Ventures XI-B, L.P. · CIK 0001665601 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 151,049

F14 · kind: Represents receipt of shares in the distribution in kind described in footnotes (5) and (9).

F15 · ownership.nature: Shares held by BP XI SF. BP XI SF's investment adviser is Battery Management Corp. The BP XI Managing Members are the managing members of BP XI SF and may be deemed to share voting and dispositive power over the securities held by BP XI. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of his, her 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 of for any other purpose. Mr. Agrawal is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001209191-21-064533 · doc4.xml · nonDerivative · entry 7

Battery Partners XI, LLC · CIK 0001870316 · 10% owner

Battery Partners XI Side Fund, LLC · CIK 0001869817 · 10% owner

Battery Investment Partners XI, LLC · CIK 0001665602 · 10% owner

Battery Ventures XI-A Side Fund, L.P. · CIK 0001665600 · 10% owner

Battery Ventures XI-A, L.P. · CIK 0001665603 · 10% owner

Battery Ventures XI-B Side Fund, L.P. · CIK 0001665599 · 10% owner

Battery Ventures XI-B, L.P. · CIK 0001665601 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

F13 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by BP XI to its members without consideration.

F12 · ownership.nature: Shares held by BP XI. BP XI's investment adviser is Battery Management Corp. The BP XI Managing Members are the managing members of BP XI and may be deemed to share voting and dispositive power over the securities held by BP XI. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of his, her 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 of for any other purpose. Mr. Agrawal is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001209191-21-064533 · doc4.xml · nonDerivative · entry 6

Battery Partners XI, LLC · CIK 0001870316 · 10% owner

Battery Partners XI Side Fund, LLC · CIK 0001869817 · 10% owner

Battery Investment Partners XI, LLC · CIK 0001665602 · 10% owner

Battery Ventures XI-A Side Fund, L.P. · CIK 0001665600 · 10% owner

Battery Ventures XI-A, L.P. · CIK 0001665603 · 10% owner

Battery Ventures XI-B Side Fund, L.P. · CIK 0001665599 · 10% owner

Battery Ventures XI-B, L.P. · CIK 0001665601 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 151,049

F11 · kind: Represents receipt of shares in the distribution in kind described in footnotes (1), (3) and (7).

F12 · ownership.nature: Shares held by BP XI. BP XI's investment adviser is Battery Management Corp. The BP XI Managing Members are the managing members of BP XI and may be deemed to share voting and dispositive power over the securities held by BP XI. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of his, her 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 of for any other purpose. Mr. Agrawal is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001209191-21-064533 · doc4.xml · nonDerivative · entry 5

Battery Partners XI, LLC · CIK 0001870316 · 10% owner

Battery Partners XI Side Fund, LLC · CIK 0001869817 · 10% owner

Battery Investment Partners XI, LLC · CIK 0001665602 · 10% owner

Battery Ventures XI-A Side Fund, L.P. · CIK 0001665600 · 10% owner

Battery Ventures XI-A, L.P. · CIK 0001665603 · 10% owner

Battery Ventures XI-B Side Fund, L.P. · CIK 0001665599 · 10% owner

Battery Ventures XI-B, L.P. · CIK 0001665601 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 225,420

F9 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by Battery Ventures XI-B Side Fund, L.P. to its general partner and limited partners without additional consideration.

F10 · ownership.nature: Shares held by Battery Ventures XI-B Side Fund, L.P. ("BV XI-B SF"). BP XI SF is the general partner of BV XI-B SF and may be deemed to beneficially own the shares held by BV XI-B SF. BP XI SF's investment adviser is Battery Management Corp. The BP XI Managing Members are the managing members of BP XI SF and may be deemed to share voting and dispositive power over the securities held by BP XI-B SF. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of his, her 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 of for any other purpose. Mr. Agrawal is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001209191-21-064533 · doc4.xml · nonDerivative · entry 4

Battery Partners XI, LLC · CIK 0001870316 · 10% owner

Battery Partners XI Side Fund, LLC · CIK 0001869817 · 10% owner

Battery Investment Partners XI, LLC · CIK 0001665602 · 10% owner

Battery Ventures XI-A Side Fund, L.P. · CIK 0001665600 · 10% owner

Battery Ventures XI-A, L.P. · CIK 0001665603 · 10% owner

Battery Ventures XI-B Side Fund, L.P. · CIK 0001665599 · 10% owner

Battery Ventures XI-B, L.P. · CIK 0001665601 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 264,382

F7 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by Battery Ventures XI-B, L.P. to its general partner and limited partners without additional consideration.

F8 · ownership.nature: Shares held by Battery Ventures XI-B, L.P. ("BV XI-B"). BP XI is the general partner of BV XI-B and may be deemed to beneficially own the shares held by BV XI-B. BP XI 's investment adviser is Battery Management Corp. The BP XI Managing Members are the managing members of BP XI and may be deemed to share voting and dispositive power over the securities held by BP XI-B. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of his, her 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 of for any other purpose. Mr. Agrawal is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001209191-21-064533 · doc4.xml · nonDerivative · entry 3

Battery Partners XI, LLC · CIK 0001870316 · 10% owner

Battery Partners XI Side Fund, LLC · CIK 0001869817 · 10% owner

Battery Investment Partners XI, LLC · CIK 0001665602 · 10% owner

Battery Ventures XI-A Side Fund, L.P. · CIK 0001665600 · 10% owner

Battery Ventures XI-A, L.P. · CIK 0001665603 · 10% owner

Battery Ventures XI-B Side Fund, L.P. · CIK 0001665599 · 10% owner

Battery Ventures XI-B, L.P. · CIK 0001665601 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 1,039,566

F5 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by Battery Ventures XI-A Side Fund, L.P. to its general partner and limited partners without additional consideration.

F6 · ownership.nature: Shares held by Battery Ventures XI-A Side Fund, L.P. ("BV XI-A SF"). Battery Partners XI Side Fund, LLC ("BP XI SF") is the general partner of BV XI-A SF and may be deemed to beneficially own the shares held by BV XI-A SF. BP XI SF's investment adviser is Battery Management Corp. The BP XI Managing Members are the managing members of BP XI SF and may be deemed to share voting and dispositive power over the securities held by BP XI-A SF. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of his, her 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 of for any other purpose. Mr. Agrawal is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001209191-21-064533 · doc4.xml · nonDerivative · entry 2

Battery Partners XI, LLC · CIK 0001870316 · 10% owner

Battery Partners XI Side Fund, LLC · CIK 0001869817 · 10% owner

Battery Investment Partners XI, LLC · CIK 0001665602 · 10% owner

Battery Ventures XI-A Side Fund, L.P. · CIK 0001665600 · 10% owner

Battery Ventures XI-A, L.P. · CIK 0001665603 · 10% owner

Battery Ventures XI-B Side Fund, L.P. · CIK 0001665599 · 10% owner

Battery Ventures XI-B, L.P. · CIK 0001665601 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 1,000,604

F3 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by Battery Ventures XI-A, L.P. to its general partner and limited partners without additional consideration.

F4 · ownership.nature: Shares held by Battery Ventures XI-A, L.P. ("BV XI-A"). BP XI is the general partner of BV XI-A and may be deemed to beneficially own the shares held by BV XI-A. BP XI's investment adviser is Battery Management Corp. The BP XI Managing Members are the managing members of BP XI and may be deemed to share voting and dispositive power over the securities held by BP XI-A. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of his, her 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 of for any other purpose. Mr. Agrawal is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001209191-21-064533 · doc4.xml · nonDerivative · entry 1

Battery Partners XI, LLC · CIK 0001870316 · 10% owner

Battery Partners XI Side Fund, LLC · CIK 0001869817 · 10% owner

Battery Investment Partners XI, LLC · CIK 0001665602 · 10% owner

Battery Ventures XI-A Side Fund, L.P. · CIK 0001665600 · 10% owner

Battery Ventures XI-A, L.P. · CIK 0001665603 · 10% owner

Battery Ventures XI-B Side Fund, L.P. · CIK 0001665599 · 10% owner

Battery Ventures XI-B, L.P. · CIK 0001665601 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 46,373

F1 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by Battery Investment Partners XI, LLC to its members without additional consideration.

F2 · ownership.nature: Shares held by Battery Investment Partners XI, LLC ("BIP XI"). Battery Partners XI, LLC ("BP XI") is the managing member of BIP XI and may be deemed to beneficially own the shares held by BIP XI. BP XI's investment adviser is Battery Management Corp. Neeraj Agrawal, Michael Brown, Jesse Feldman, Russell Fleischer, Roger Lee, Chelsea Stoner, Dharmesh Thakker, and Scott Tobin (collectively the "BP XI Managing Members") are the managing members of BP XI and may be deemed to share voting and dispositive power over the securities held by BIP XI. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of his, her 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 of for any other purpose. Mr. Agrawal is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001209191-21-061925 · doc4.xml · nonDerivative · entry 2

Institutional Venture Management XV, LLC · CIK 0001640275 · 10% owner

Institutional Venture Partners XV, L.P. · CIK 0001640274 · 10% owner

Chaffee Todd C · CIK 0001300134 · 10% owner

Dash Somesh · CIK 0001843938 · 10% owner

FOGELSONG NORMAN A · CIK 0001140932 · 10% owner

Harrick Stephen J · CIK 0001299975 · 10% owner

Liaw Eric · CIK 0001644264 · 10% owner

Maltz Jules A. · CIK 0001553254 · 10% owner

Miller J Sanford · CIK 0001359524 · 10% owner

Phelps Dennis B · CIK 0001299965 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 29,835

F3 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by IVP XV EF to its general partner and limited partners without additional consideration. The general partner further distributed the shares received in this distribution to its members on a pro rata basis for no consideration.

F4 · ownership.nature: These shares are owned directly by Institutional Venture Partners XV Executive Fund, L.P. ("IVP XV EF"), of which IVM XV is the sole general partner and exercises voting and investment power over these shares. The managing directors of IVM XV are Todd C. Chaffee, Somesh Dash, Norman A. Fogelsong, Stephen J. Harrick, Eric Liaw, Jules A. Maltz, J. Sanford Miller and Dennis B. Phelps, Jr. The reporting persons disclaim beneficial ownership of these securities, except to the extent of their respective proportionate pecuniary interest therein and this report shall not be deemed an admission that any reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0001209191-21-061925 · doc4.xml · nonDerivative · entry 1

Institutional Venture Management XV, LLC · CIK 0001640275 · 10% owner

Institutional Venture Partners XV, L.P. · CIK 0001640274 · 10% owner

Chaffee Todd C · CIK 0001300134 · 10% owner

Dash Somesh · CIK 0001843938 · 10% owner

FOGELSONG NORMAN A · CIK 0001140932 · 10% owner

Harrick Stephen J · CIK 0001299975 · 10% owner

Liaw Eric · CIK 0001644264 · 10% owner

Maltz Jules A. · CIK 0001553254 · 10% owner

Miller J Sanford · CIK 0001359524 · 10% owner

Phelps Dennis B · CIK 0001299965 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 5,610,451

F1 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by IVP XV LP to its general partner and limited partners without additional consideration. The general partner further distributed the shares received in this distribution to its members on a pro rata basis for no consideration.

F2 · ownership.nature: These shares are owned directly by Institutional Venture Partners XV, L.P. (IVP XV LP"), of which Institutional Venture Management XV, LLC ("IVM XV") is the sole general partner and exercises voting and investment power over these shares. The managing directors of IVM XV are Todd C. Chaffee, Somesh Dash, Norman A. Fogelsong, Stephen J. Harrick, Eric Liaw, Jules A. Maltz, J. Sanford Miller and Dennis B. Phelps, Jr. The reporting persons disclaim beneficial ownership of these securities, except to the extent of their respective proportionate pecuniary interest therein and this report shall not be deemed an admission that any reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0001209191-21-061927 · doc4.xml · nonDerivative · entry 2

Institutional Venture Partners XV Executive Fund, L.P. · CIK 0001661321 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 29,835

F3 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by IVP XV EF to its general partner and limited partners without additional consideration. The general partner further distributed the shares received in this distribution to its members on a pro rata basis for no consideration.

F4 · ownership.nature: These shares are owned directly by Institutional Venture Partners XV Executive Fund, L.P. ("IVP XV EF"), of which IVM XV is the sole general partner and exercises voting and investment power over these shares. The managing directors of IVM XV are Todd C. Chaffee, Somesh Dash, Norman A. Fogelsong, Stephen J. Harrick, Eric Liaw, Jules A. Maltz, J. Sanford Miller and Dennis B. Phelps, Jr. The reporting persons disclaim beneficial ownership of these securities, except to the extent of their respective proportionate pecuniary interest therein and this report shall not be deemed an admission that any reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0001209191-21-061927 · doc4.xml · nonDerivative · entry 1

Institutional Venture Partners XV Executive Fund, L.P. · CIK 0001661321 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 5,610,451

F1 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by IVP XV LP to its general partner and limited partners without additional consideration. The general partner further distributed the shares received in this distribution to its members on a pro rata basis for no consideration.

F2 · ownership.nature: These shares are owned directly by Institutional Venture Partners XV, L.P. (IVP XV LP"), of which Institutional Venture Management XV, LLC ("IVM XV") is the sole general partner and exercises voting and investment power over these shares. The managing directors of IVM XV are Todd C. Chaffee, Somesh Dash, Norman A. Fogelsong, Stephen J. Harrick, Eric Liaw, Jules A. Maltz, J. Sanford Miller and Dennis B. Phelps, Jr. The reporting persons disclaim beneficial ownership of these securities, except to the extent of their respective proportionate pecuniary interest therein and this report shall not be deemed an admission that any reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0001209191-21-061183 · doc4.xml · nonDerivative · entry 2

Institutional Venture Management XV, LLC · CIK 0001640275 · 10% owner

Institutional Venture Partners XV, L.P. · CIK 0001640274 · 10% owner

Chaffee Todd C · CIK 0001300134 · 10% owner

Dash Somesh · CIK 0001843938 · 10% owner

FOGELSONG NORMAN A · CIK 0001140932 · 10% owner

Harrick Stephen J · CIK 0001299975 · 10% owner

Liaw Eric · CIK 0001644264 · 10% owner

Maltz Jules A. · CIK 0001553254 · 10% owner

Miller J Sanford · CIK 0001359524 · 10% owner

Phelps Dennis B · CIK 0001299965 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 35,933

F3 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by IVP XV EF to its general partner and limited partners without additional consideration. The general partner further distributed the shares received in this distribution to its members on a pro rata basis for no consideration.

F4 · ownership.nature: These shares are owned directly by Institutional Venture Partners XV Executive Fund, L.P. ("IVP XV EF"), of which IVM XV is the sole general partner and exercises voting and investment power over these shares. The managing directors of IVM XV are Todd C. Chaffee, Somesh Dash, Norman A. Fogelsong, Stephen J. Harrick, Eric Liaw, Jules A. Maltz, J. Sanford Miller and Dennis B. Phelps, Jr. The reporting persons disclaim beneficial ownership of these securities, except to the extent of their respective proportionate pecuniary interest therein and this report shall not be deemed an admission that any reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0001209191-21-061183 · doc4.xml · nonDerivative · entry 1

Institutional Venture Management XV, LLC · CIK 0001640275 · 10% owner

Institutional Venture Partners XV, L.P. · CIK 0001640274 · 10% owner

Chaffee Todd C · CIK 0001300134 · 10% owner

Dash Somesh · CIK 0001843938 · 10% owner

FOGELSONG NORMAN A · CIK 0001140932 · 10% owner

Harrick Stephen J · CIK 0001299975 · 10% owner

Liaw Eric · CIK 0001644264 · 10% owner

Maltz Jules A. · CIK 0001553254 · 10% owner

Miller J Sanford · CIK 0001359524 · 10% owner

Phelps Dennis B · CIK 0001299965 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 6,756,824

F1 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by IVP XV LP to its general partner and limited partners without additional consideration. The general partner further distributed the shares received in this distribution to its members on a pro rata basis for no consideration.

F2 · ownership.nature: These shares are owned directly by Institutional Venture Partners XV, L.P. (IVP XV LP"), of which Institutional Venture Management XV, LLC ("IVM XV") is the sole general partner and exercises voting and investment power over these shares. The managing directors of IVM XV are Todd C. Chaffee, Somesh Dash, Norman A. Fogelsong, Stephen J. Harrick, Eric Liaw, Jules A. Maltz, J. Sanford Miller and Dennis B. Phelps, Jr. The reporting persons disclaim beneficial ownership of these securities, except to the extent of their respective proportionate pecuniary interest therein and this report shall not be deemed an admission that any reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0001209191-21-061186 · doc4.xml · nonDerivative · entry 2

Institutional Venture Partners XV Executive Fund, L.P. · CIK 0001661321 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 35,933

F3 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by IVP XV EF to its general partner and limited partners without additional consideration. The general partner further distributed the shares received in this distribution to its members on a pro rata basis for no consideration.

F4 · ownership.nature: These shares are owned directly by Institutional Venture Partners XV Executive Fund, L.P. ("IVP XV EF"), of which IVM XV is the sole general partner and exercises voting and investment power over these shares. The managing directors of IVM XV are Todd C. Chaffee, Somesh Dash, Norman A. Fogelsong, Stephen J. Harrick, Eric Liaw, Jules A. Maltz, J. Sanford Miller and Dennis B. Phelps, Jr. The reporting persons disclaim beneficial ownership of these securities, except to the extent of their respective proportionate pecuniary interest therein and this report shall not be deemed an admission that any reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0001209191-21-061186 · doc4.xml · nonDerivative · entry 1

Institutional Venture Partners XV Executive Fund, L.P. · CIK 0001661321 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 6,756,824

F1 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by IVP XV LP to its general partner and limited partners without additional consideration. The general partner further distributed the shares received in this distribution to its members on a pro rata basis for no consideration.

F2 · ownership.nature: These shares are owned directly by Institutional Venture Partners XV, L.P. (IVP XV LP"), of which Institutional Venture Management XV, LLC ("IVM XV") is the sole general partner and exercises voting and investment power over these shares. The managing directors of IVM XV are Todd C. Chaffee, Somesh Dash, Norman A. Fogelsong, Stephen J. Harrick, Eric Liaw, Jules A. Maltz, J. Sanford Miller and Dennis B. Phelps, Jr. The reporting persons disclaim beneficial ownership of these securities, except to the extent of their respective proportionate pecuniary interest therein and this report shall not be deemed an admission that any reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0001209191-21-060633 · doc4.xml · nonDerivative · entry 2

Institutional Venture Management XV, LLC · CIK 0001640275 · 10% owner

Institutional Venture Partners XV, L.P. · CIK 0001640274 · 10% owner

Chaffee Todd C · CIK 0001300134 · 10% owner

Dash Somesh · CIK 0001843938 · 10% owner

FOGELSONG NORMAN A · CIK 0001140932 · 10% owner

Harrick Stephen J · CIK 0001299975 · 10% owner

Liaw Eric · CIK 0001644264 · 10% owner

Maltz Jules A. · CIK 0001553254 · 10% owner

Miller J Sanford · CIK 0001359524 · 10% owner

Phelps Dennis B · CIK 0001299965 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 37,785

F3 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by IVP XV EF to its general partner and limited partners without additional consideration. The general partner further distributed the shares received in this distribution to its members on a pro rata basis for no consideration.

F4 · ownership.nature: These shares are owned directly by Institutional Venture Partners XV Executive Fund, L.P. ("IVP XV EF"), of which IVM XV is the sole general partner and exercises voting and investment power over these shares. The managing directors of IVM XV are Todd C. Chaffee, Somesh Dash, Norman A. Fogelsong, Stephen J. Harrick, Eric Liaw, Jules A. Maltz, J. Sanford Miller and Dennis B. Phelps, Jr. The reporting persons disclaim beneficial ownership of these securities, except to the extent of their respective proportionate pecuniary interest therein and this report shall not be deemed an admission that any reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0001209191-21-060633 · doc4.xml · nonDerivative · entry 1

Institutional Venture Management XV, LLC · CIK 0001640275 · 10% owner

Institutional Venture Partners XV, L.P. · CIK 0001640274 · 10% owner

Chaffee Todd C · CIK 0001300134 · 10% owner

Dash Somesh · CIK 0001843938 · 10% owner

FOGELSONG NORMAN A · CIK 0001140932 · 10% owner

Harrick Stephen J · CIK 0001299975 · 10% owner

Liaw Eric · CIK 0001644264 · 10% owner

Maltz Jules A. · CIK 0001553254 · 10% owner

Miller J Sanford · CIK 0001359524 · 10% owner

Phelps Dennis B · CIK 0001299965 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 7,104,972

F1 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by IVP XV LP to its general partner and limited partners without additional consideration. The general partner further distributed the shares received in this distribution to its members on a pro rata basis for no consideration.

F2 · ownership.nature: These shares are owned directly by Institutional Venture Partners XV, L.P. (IVP XV LP"), of which Institutional Venture Management XV, LLC ("IVM XV") is the sole general partner and exercises voting and investment power over these shares. The managing directors of IVM XV are Todd C. Chaffee, Somesh Dash, Norman A. Fogelsong, Stephen J. Harrick, Eric Liaw, Jules A. Maltz, J. Sanford Miller and Dennis B. Phelps, Jr. The reporting persons disclaim beneficial ownership of these securities, except to the extent of their respective proportionate pecuniary interest therein and this report shall not be deemed an admission that any reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0001209191-21-060635 · doc4.xml · nonDerivative · entry 2

Institutional Venture Partners XV Executive Fund, L.P. · CIK 0001661321 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 37,785

F3 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by IVP XV EF to its general partner and limited partners without additional consideration. The general partner further distributed the shares received in this distribution to its members on a pro rata basis for no consideration.

F4 · ownership.nature: These shares are owned directly by Institutional Venture Partners XV Executive Fund, L.P. ("IVP XV EF"), of which IVM XV is the sole general partner and exercises voting and investment power over these shares. The managing directors of IVM XV are Todd C. Chaffee, Somesh Dash, Norman A. Fogelsong, Stephen J. Harrick, Eric Liaw, Jules A. Maltz, J. Sanford Miller and Dennis B. Phelps, Jr. The reporting persons disclaim beneficial ownership of these securities, except to the extent of their respective proportionate pecuniary interest therein and this report shall not be deemed an admission that any reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0001209191-21-060635 · doc4.xml · nonDerivative · entry 1

Institutional Venture Partners XV Executive Fund, L.P. · CIK 0001661321 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 7,104,972

F1 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by IVP XV LP to its general partner and limited partners without additional consideration. The general partner further distributed the shares received in this distribution to its members on a pro rata basis for no consideration.

F2 · ownership.nature: These shares are owned directly by Institutional Venture Partners XV, L.P. (IVP XV LP"), of which Institutional Venture Management XV, LLC ("IVM XV") is the sole general partner and exercises voting and investment power over these shares. The managing directors of IVM XV are Todd C. Chaffee, Somesh Dash, Norman A. Fogelsong, Stephen J. Harrick, Eric Liaw, Jules A. Maltz, J. Sanford Miller and Dennis B. Phelps, Jr. The reporting persons disclaim beneficial ownership of these securities, except to the extent of their respective proportionate pecuniary interest therein and this report shall not be deemed an admission that any reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000899243-21-039949 · doc4.xml · derivative · entry 2

Sarkis Ninos · CIK 0001883039 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 71,598

Underlying: Class A Common Stock · 5,866 shares

Expires 2030-11-10

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_date: 1/48th of the shares subject to the option vest on each monthly anniversary measured from October 26, 2020 (the "Vesting Commencement Date"), such that 100% of the shares subject to the option will be fully vested and exercisable on the fourth anniversary of the Vesting Commencement Date.

SEC source: 0000899243-21-039949 · doc4.xml · nonDerivative · entry 1

Sarkis Ninos · CIK 0001883039 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 33,366

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.

SEC source: 0001104659-21-123677 · tm2129347d1_4.xml · nonDerivative · entry 2

GURLEY J WILLIAM · CIK 0001190191 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

F1 · price: Represents the weighted-average sale price per share of a series of transactions, all of which were executed on October 4, 2021. The actual sale prices ranged from a low of $53.29 to a high of $54.275, inclusive. The Reporting Person undertakes to provide upon request of the SEC Staff, Amplitude, Inc. or any security holder of Amplitude, Inc. full information regarding the number of shares sold at each price within the range. The amount reflected has been rounded to 4 decimal points.

F3 · ownership.nature: Shares are held by J. William Gurley's trust entity.

SEC source: 0001104659-21-123677 · tm2129347d1_4.xml · nonDerivative · entry 1

GURLEY J WILLIAM · CIK 0001190191 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

F1 · price: Represents the weighted-average sale price per share of a series of transactions, all of which were executed on October 4, 2021. The actual sale prices ranged from a low of $53.29 to a high of $54.275, inclusive. The Reporting Person undertakes to provide upon request of the SEC Staff, Amplitude, Inc. or any security holder of Amplitude, Inc. full information regarding the number of shares sold at each price within the range. The amount reflected has been rounded to 4 decimal points.

F2 · ownership.nature: Shares are held by J. William Gurley's family partnerships.

SEC source: 0001104659-22-021491 · tm225985-2_5seq1.xml · nonDerivative · entry 1

Tavel Sarah E · CIK 0001774645 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 115,087

SEC source: 0000899243-21-038730 · doc4.xml · derivative · entry 10

Johnson Jennifer L. · CIK 0001882998 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 993,750

Underlying: Class A Common Stock · 80,773 shares

Expires 2030-11-10

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

F7 · derivative.exercise_date: 25% of the shares subject to the option vest on the first anniversary measured from September 30, 2020 (the "Vesting Commencement Date"), and 1/48th of the total number of shares vest monthly thereafter, such that 100% of the shares subject to the option will be fully vested and exercisable on the fourth anniversary of the Vesting Commencement Date.

SEC source: 0000899243-21-038730 · doc4.xml · nonDerivative · entry 8

Johnson Jennifer L. · CIK 0001882998 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F6 · price: This transaction was executed in multiple trades in prices ranging from $53.75 to $54.70, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.

SEC source: 0000899243-21-038730 · doc4.xml · nonDerivative · entry 7

Johnson Jennifer L. · CIK 0001882998 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,615

F5 · price: This transaction was executed in multiple trades in prices ranging from $52.75 to $53.74, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.

SEC source: 0000899243-21-038730 · doc4.xml · nonDerivative · entry 6

Johnson Jennifer L. · CIK 0001882998 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 47,497

F4 · price: This transaction was executed in multiple trades in prices ranging from $51.69 to $52.68, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.

SEC source: 0000899243-21-038730 · doc4.xml · nonDerivative · entry 5

Johnson Jennifer L. · CIK 0001882998 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 64,301

F3 · price: This transaction was executed in multiple trades in prices ranging from $50.61 to $51.60, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.