AMPL

SEC source: 0001209191-22-057864 · doc4.xml · nonDerivative · entry 6

Agrawal Neeraj · CIK 0001532809 · 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 · By Battery Investment Partners Select Fund I, L.P.

Disclosed balance after: 35,713

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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F7 · ownership.nature: Shares held by Battery Investment Partners Select Fund I, L.P. ("BIP Select I"). Battery Partners Select Fund I GP, LLC ("BP Select I GP") is the general partner of BIP Select I and may be deemed to beneficially own the shares held by BP Select I. The BP XI Managing Members and Morad Elhafed (collectively, the "BP Select Managing Members") are the managing members of BP Select I GP and may be deemed to share voting and dispositive power over the securities held by BIP Select I. 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.

SEC source: 0001209191-22-057864 · doc4.xml · nonDerivative · entry 5

Agrawal Neeraj · CIK 0001532809 · 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 · By Battery Ventures XI-B Side Fund, L.P.

Disclosed balance after: 926,395

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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F6 · 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. 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.

SEC source: 0001209191-22-057864 · doc4.xml · nonDerivative · entry 4

Agrawal Neeraj · CIK 0001532809 · 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 · By Battery Ventures XI-A Side Fund, L.P.

Disclosed balance after: 4,272,229

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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F5 · 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. 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.

SEC source: 0001209191-22-057864 · doc4.xml · nonDerivative · entry 3

Agrawal Neeraj · CIK 0001532809 · 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 · By Battery Ventures XI-B, L.P.

Disclosed balance after: 1,086,512

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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F4 · 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. 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.

SEC source: 0001209191-22-057864 · doc4.xml · nonDerivative · entry 2

Agrawal Neeraj · CIK 0001532809 · 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 · By Battery Ventures XI-A, L.P.

Disclosed balance after: 4,112,110

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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F3 · 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. 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.

SEC source: 0001209191-22-057864 · doc4.xml · nonDerivative · entry 1

Agrawal Neeraj · CIK 0001532809 · 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 · By Battery Investment Partners XI, LLC

Disclosed balance after: 190,579

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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

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. 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.

SEC source: 0001209191-22-057853 · doc4.xml · derivative · entry 25

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 · By Battery Ventures Select Fund I, L.P.

Disclosed balance after: 0

Underlying: Class A Common Stock · 361,099 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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F23 · 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).

F23 · 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).

F23 · 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).

F8 · ownership.nature: Shares held by Battery Ventures Select Fund I, L.P. ("BV Select I"). Battery Partners Select Fund I, L.P. ("BP Select I") is the general partner of BV Select I, BP Select I GP is the general partner of BP Select I and may be deemed to beneficially own the shares held by BV Select I. The BP Select Managing Members are the managing members of BP Select I GP and may be deemed to share voting and dispositive power over the securities held by BV Select I. 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.

SEC source: 0001209191-22-057853 · doc4.xml · derivative · entry 24

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 · By Battery Investment Partners Select Fund I, L.P.

Disclosed balance after: 0

Underlying: Class A Common Stock · 35,713 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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F23 · 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).

F23 · 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).

F23 · 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).

F7 · ownership.nature: Shares held by Battery Investment Partners Select Fund I, L.P. ("BIP Select I"). Battery Partners Select Fund I GP, LLC ("BP Select I GP") is the general partner of BIP Select I and may be deemed to beneficially own the shares held by BP Select I. The BP XI Managing Members and Morad Elhafed (collectively, the "BP Select Managing Members") are the managing members of BP Select I GP and may be deemed to share voting and dispositive power over the securities held by BIP Select I. 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.

SEC source: 0001209191-22-057853 · doc4.xml · derivative · entry 23

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 · By Battery Ventures XI-B Side Fund, L.P.

Disclosed balance after: 0

Underlying: Class A Common Stock · 394,758 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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F23 · 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).

F23 · 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).

F23 · 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).

F6 · 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. 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.

SEC source: 0001209191-22-057853 · doc4.xml · derivative · entry 22

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 · By Battery Ventures XI-A Side Fund, L.P.

Disclosed balance after: 0

Underlying: Class A Common Stock · 1,820,400 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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F23 · 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).

F23 · 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).

F23 · 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).

F5 · 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. 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.

SEC source: 0001209191-22-057853 · doc4.xml · derivative · entry 21

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 · By Battery Ventures XI-B, L.P.

Disclosed balance after: 0

Underlying: Class A Common Stock · 462,963 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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F23 · 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).

F23 · 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).

F23 · 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).

F4 · 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. 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.

SEC source: 0001209191-22-057853 · doc4.xml · derivative · entry 20

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 · By Battery Ventures XI-A, L.P.

Disclosed balance after: 0

Underlying: Class A Common Stock · 1,752,173 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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F23 · 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).

F23 · 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).

F23 · 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).

F3 · 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. 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.

SEC source: 0001209191-22-057853 · doc4.xml · derivative · entry 19

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 · By Battery Investment Partners XI, LLC

Disclosed balance after: 0

Underlying: Class A Common Stock · 81,206 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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F23 · 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).

F23 · 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).

F23 · 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 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. 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.

SEC source: 0001209191-22-057853 · 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 · By Battery Ventures Select Fund I, L.P.

Disclosed balance after: 361,099

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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F8 · ownership.nature: Shares held by Battery Ventures Select Fund I, L.P. ("BV Select I"). Battery Partners Select Fund I, L.P. ("BP Select I") is the general partner of BV Select I, BP Select I GP is the general partner of BP Select I and may be deemed to beneficially own the shares held by BV Select I. The BP Select Managing Members are the managing members of BP Select I GP and may be deemed to share voting and dispositive power over the securities held by BV Select I. 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.

SEC source: 0001209191-22-057853 · 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 · By Battery Investment Partners Select Fund I, L.P.

Disclosed balance after: 35,713

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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F7 · ownership.nature: Shares held by Battery Investment Partners Select Fund I, L.P. ("BIP Select I"). Battery Partners Select Fund I GP, LLC ("BP Select I GP") is the general partner of BIP Select I and may be deemed to beneficially own the shares held by BP Select I. The BP XI Managing Members and Morad Elhafed (collectively, the "BP Select Managing Members") are the managing members of BP Select I GP and may be deemed to share voting and dispositive power over the securities held by BIP Select I. 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.

SEC source: 0001209191-22-057853 · 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 · By Battery Ventures XI-B Side Fund, L.P.

Disclosed balance after: 926,395

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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F6 · 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. 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.

SEC source: 0001209191-22-057853 · 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 · By Battery Ventures XI-A Side Fund, L.P.

Disclosed balance after: 4,272,229

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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F5 · 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. 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.

SEC source: 0001209191-22-057853 · 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 · By Battery Ventures XI-B, L.P.

Disclosed balance after: 1,086,512

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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F4 · 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. 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.

SEC source: 0001209191-22-057853 · 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 · By Battery Ventures XI-A, L.P.

Disclosed balance after: 4,112,110

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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F3 · 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. 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.

SEC source: 0001209191-22-057853 · 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 · By Battery Investment Partners XI, LLC

Disclosed balance after: 190,579

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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

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. 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.

SEC source: 0001562180-22-007819 · primarydocument.xml · nonDerivative · entry 2

Sarkis Ninos · CIK 0001883039 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 54,116

F4 · balance_after: Includes 6,480 RSUs.

SEC source: 0001562180-22-007819 · primarydocument.xml · nonDerivative · entry 1

Sarkis Ninos · CIK 0001883039 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,597

F1 · kind: Pursuant to a mandatory sell-to-cover provision under the Issuer's 2021 Incentive Award Plan, the shares were sold upon the vesting of restricted stock units ("RSUs") solely to cover applicable withholding taxes.

F2 · price: This transaction was executed in multiple trades at prices ranging from $13.49 to $14.26, 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.

F3 · balance_after: Includes 1,481 shares acquired under the Issuer's employee stock purchase plan on November 14, 2022.

F4 · balance_after: Includes 6,480 RSUs.

SEC source: 0001562180-22-007789 · primarydocument.xml · nonDerivative · entry 1

Wong Catherine · CIK 0001744910 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 103,910

F1 · kind: Shares sold to satisfy tax obligations in connection with the vesting of restricted stock units ("RSUs"), pursuant to a 10b5-1 trading plan adopted by the Reporting Person on December 3, 2021.

F2 · price: This transaction was executed in multiple trades in prices ranging from $13.53 to $14.01, 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.

F3 · balance_after: Includes 78,125 RSUs.

SEC source: 0001562180-22-007653 · primarydocument.xml · derivative · entry 2

Vuong Hoang · CIK 0001883031 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 433,188 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 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).

F1 · 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).

F1 · 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).

SEC source: 0001562180-22-007653 · primarydocument.xml · nonDerivative · entry 1

Vuong Hoang · CIK 0001883031 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 797,667

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 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 · balance_after: Includes 300,171 restricted stock units.

SEC source: 0001562180-22-007179 · primarydocument.xml · nonDerivative · entry 1

HANSEN THOMAS NEERGAARD · CIK 0001728084 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 987,032

F1 · kind: Pursuant to a mandatory sell-to-cover provision under the Issuer's 2021 Incentive Award Plan, the shares were sold upon the vesting of restricted stock units ("RSUs") solely to cover applicable withholding taxes.

F2 · price: This transaction was executed in multiple trades in prices ranging from $14.660 to $15.659, 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.

F3 · balance_after: Includes 950,000 RSUs.

SEC source: 0001562180-22-007131 · primarydocument.xml · nonDerivative · entry 1

Whitehurst James M · CIK 0001292272 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 127,387

F1 · shares: Represents restricted stock units ("RSUs") that were granted pursuant to the Issuer's Non-Employee Director Compensation Program (the "Program") in lieu of retainer fees. Each RSU represents a right to receive one share of Class A Common Stock, with settlement to take place either (i) on a date selected by the reporting person pursuant to the Program or (ii) as otherwise provided by the Program.

F2 · balance_after: Includes 96,137 RSUs.

SEC source: 0001562180-22-007130 · primarydocument.xml · nonDerivative · entry 1

Steele Elisa · CIK 0001596281 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,855

F1 · shares: Represents restricted stock units ("RSUs") that were granted pursuant to the Issuer's Non-Employee Director Compensation Program (the "Program") in lieu of retainer fees. Each RSU represents a right to receive one share of Class A Common Stock, with settlement to take place either (i) on a date selected by the reporting person pursuant to the Program or (ii) as otherwise provided by the Program.

F2 · balance_after: Consists of 1,855 RSUs.

SEC source: 0001567619-22-017100 · doc1.xml · derivative · entry 3

Vuong Hoang · CIK 0001883031 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,495

Underlying: Class A Common Stock · 14,748 shares

Expires 2029-06-03

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_date: The option is early exercisable. 1/48th of the shares subject to the option vest on each monthly anniversary measured from April 29, 2019 (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: 0001567619-22-017100 · doc1.xml · nonDerivative · entry 1

Vuong Hoang · CIK 0001883031 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 364,479

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 · balance_after: Includes 300,171 restricted stock units.

SEC source: 0001562180-22-006455 · primarydocument.xml · derivative · entry 2

Sarkis Ninos · CIK 0001883039 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 47,732

Underlying: Class A Common Stock · 5,116 shares

Expires 2030-11-09

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

F2 · derivative.exercise_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: 0001562180-22-006455 · primarydocument.xml · nonDerivative · entry 1

Sarkis Ninos · CIK 0001883039 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 54,611

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 · balance_after: Includes 7,776 restricted stock units.

SEC source: 0001562180-22-006244 · primarydocument.xml · nonDerivative · entry 1

Wong Catherine · CIK 0001744910 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 107,425

F1 · kind: Shares sold to satisfy tax obligations in connection with the vesting of restricted stock units ("RSUs"), pursuant to a 10b5-1 trading plan adopted by the Reporting Person on December 3, 2021.

F2 · price: This transaction was executed in multiple trades in prices ranging from $17.3700 to $17.8500, 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.

F3 · balance_after: Includes 85,938 RSUs.

SEC source: 0001562180-22-006282 · primarydocument.xml · nonDerivative · entry 1

Sarkis Ninos · CIK 0001883039 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 49,495

F1 · kind: Pursuant to a mandatory sell-to-cover provision under the Issuer's 2021 Incentive Award Plan, the shares were sold upon the vesting of restricted stock units ("RSUs") solely to cover applicable withholding taxes.

F2 · price: This transaction was executed in multiple trades in prices ranging from $17.37 to $17.67, 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

F3 · balance_after: Includes 7,776 RSUs.

SEC source: 0001104659-22-089496 · tm2223279d1_4seq1.xml · nonDerivative · entry 2

Tavel Sarah E · CIK 0001774645 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 115,087

SEC source: 0001104659-22-090206 · tm2223315-3_4seq1.xml · nonDerivative · entry 1

LASKY MITCHELL · CIK 0001091435 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 247,879

F1 · price: Represents the weighted-average sale price per share of a series of transactions, all of which were executed on August 10, 2022. The actual sale prices ranged from a low of $18.1 to a high of $18.27, 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 Mitchell H. Lasky's family trust.

SEC source: 0001104659-22-090194 · tm2223315-1_4seq1.xml · nonDerivative · entry 1

Puttagunta Chetan · CIK 0001695859 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

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 August 10, 2022. The actual sale prices ranged from a low of $18.00 to a high of $18.04, 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.

SEC source: 0001104659-22-088870 · tm2223068-3_4seq1.xml · nonDerivative · entry 18

Hu An-Yen · CIK 0001825956 · 10% owner

Cohler Matt · CIK 0001572685 · 10% owner

FENTON PETER H · CIK 0001219230 · 10% owner

GURLEY J WILLIAM · CIK 0001190191 · 10% owner

LASKY MITCHELL · CIK 0001091435 · 10% owner

Puttagunta Chetan · CIK 0001695859 · 10% owner

Tavel Sarah E · CIK 0001774645 · 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

F14 · ownership.nature: Shares held by Chetan Puttagunta's trust entity.

SEC source: 0001104659-22-088870 · tm2223068-3_4seq1.xml · nonDerivative · entry 17

Hu An-Yen · CIK 0001825956 · 10% owner

Cohler Matt · CIK 0001572685 · 10% owner

FENTON PETER H · CIK 0001219230 · 10% owner

GURLEY J WILLIAM · CIK 0001190191 · 10% owner

LASKY MITCHELL · CIK 0001091435 · 10% owner

Puttagunta Chetan · CIK 0001695859 · 10% owner

Tavel Sarah E · CIK 0001774645 · 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: 10

F6 · price: Represents the weighted-average sale price per share of a series of transactions, all of which were executed on August 9, 2022. The actual sale prices ranged from a low of $16.57 to a high of $17.55, inclusive. Each 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 3 decimal points.

F14 · ownership.nature: Shares held by Chetan Puttagunta's trust entity.

SEC source: 0001104659-22-088870 · tm2223068-3_4seq1.xml · nonDerivative · entry 13

Hu An-Yen · CIK 0001825956 · 10% owner

Cohler Matt · CIK 0001572685 · 10% owner

FENTON PETER H · CIK 0001219230 · 10% owner

GURLEY J WILLIAM · CIK 0001190191 · 10% owner

LASKY MITCHELL · CIK 0001091435 · 10% owner

Puttagunta Chetan · CIK 0001695859 · 10% owner

Tavel Sarah E · CIK 0001774645 · 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: 157,560

F11 · ownership.nature: Shares are held by Sarah Tavel.

SEC source: 0001104659-22-088870 · tm2223068-3_4seq1.xml · nonDerivative · entry 12

Hu An-Yen · CIK 0001825956 · 10% owner

Cohler Matt · CIK 0001572685 · 10% owner

FENTON PETER H · CIK 0001219230 · 10% owner

GURLEY J WILLIAM · CIK 0001190191 · 10% owner

LASKY MITCHELL · CIK 0001091435 · 10% owner

Puttagunta Chetan · CIK 0001695859 · 10% owner

Tavel Sarah E · CIK 0001774645 · 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: 157,607

F6 · price: Represents the weighted-average sale price per share of a series of transactions, all of which were executed on August 9, 2022. The actual sale prices ranged from a low of $16.57 to a high of $17.55, inclusive. Each 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 3 decimal points.

F11 · ownership.nature: Shares are held by Sarah Tavel.

SEC source: 0001104659-22-088870 · tm2223068-3_4seq1.xml · nonDerivative · entry 6

Hu An-Yen · CIK 0001825956 · 10% owner

Cohler Matt · CIK 0001572685 · 10% owner

FENTON PETER H · CIK 0001219230 · 10% owner

GURLEY J WILLIAM · CIK 0001190191 · 10% owner

LASKY MITCHELL · CIK 0001091435 · 10% owner

Puttagunta Chetan · CIK 0001695859 · 10% owner

Tavel Sarah E · CIK 0001774645 · 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: 144,587

F5 · ownership.nature: Shares are held by Peter H. Fenton's trust entities.

SEC source: 0001104659-22-088870 · tm2223068-3_4seq1.xml · nonDerivative · entry 5

Hu An-Yen · CIK 0001825956 · 10% owner

Cohler Matt · CIK 0001572685 · 10% owner

FENTON PETER H · CIK 0001219230 · 10% owner

GURLEY J WILLIAM · CIK 0001190191 · 10% owner

LASKY MITCHELL · CIK 0001091435 · 10% owner

Puttagunta Chetan · CIK 0001695859 · 10% owner

Tavel Sarah E · CIK 0001774645 · 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: 144,630

F6 · price: Represents the weighted-average sale price per share of a series of transactions, all of which were executed on August 9, 2022. The actual sale prices ranged from a low of $16.57 to a high of $17.55, inclusive. Each 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 3 decimal points.

F5 · ownership.nature: Shares are held by Peter H. Fenton's trust entities.

SEC source: 0001104659-22-089497 · tm2223279-2_4seq1.xml · nonDerivative · entry 2

GURLEY J WILLIAM · CIK 0001190191 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

F3 · price: Represents the weighted-average sale price per share of a series of transactions, all of which were executed on August 9, 2022. The actual sale prices ranged from a low of $17.92 to a high of $17.93, 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: 0001104659-22-089497 · tm2223279-2_4seq1.xml · nonDerivative · entry 1

GURLEY J WILLIAM · CIK 0001190191 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 2,100

F1 · price: Represents the weighted-average sale price per share of a series of transactions, all of which were executed on August 9, 2022. The actual sale prices ranged from a low of $16.85 to a high of $17.805, 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: 0001104659-22-089496 · tm2223279d1_4seq1.xml · nonDerivative · entry 1

Tavel Sarah E · CIK 0001774645 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 143,862

F1 · price: Represents the weighted-average sale price per share of a series of transactions, all of which were executed on August 9, 2022. The actual sale prices ranged from a low of $16.53 to a high of $17.2, 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.

SEC source: 0001104659-22-088870 · tm2223068-3_4seq1.xml · derivative · entry 19

Hu An-Yen · CIK 0001825956 · 10% owner

Cohler Matt · CIK 0001572685 · 10% owner

FENTON PETER H · CIK 0001219230 · 10% owner

GURLEY J WILLIAM · CIK 0001190191 · 10% owner

LASKY MITCHELL · CIK 0001091435 · 10% owner

Puttagunta Chetan · CIK 0001695859 · 10% owner

Tavel Sarah E · CIK 0001774645 · 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: 7,737,868

Underlying: Class A Common Stock · 1,526,430 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.

F15 · 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).

F15 · 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).

F15 · 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 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: 0001104659-22-088870 · tm2223068-3_4seq1.xml · nonDerivative · entry 16

Hu An-Yen · CIK 0001825956 · 10% owner

Cohler Matt · CIK 0001572685 · 10% owner

FENTON PETER H · CIK 0001219230 · 10% owner

GURLEY J WILLIAM · CIK 0001190191 · 10% owner

LASKY MITCHELL · CIK 0001091435 · 10% owner

Puttagunta Chetan · CIK 0001695859 · 10% owner

Tavel Sarah E · CIK 0001774645 · 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: 747

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.

F14 · ownership.nature: Shares held by Chetan Puttagunta's trust entity.

SEC source: 0001104659-22-088870 · tm2223068-3_4seq1.xml · nonDerivative · entry 15

Hu An-Yen · CIK 0001825956 · 10% owner

Cohler Matt · CIK 0001572685 · 10% owner

FENTON PETER H · CIK 0001219230 · 10% owner

GURLEY J WILLIAM · CIK 0001190191 · 10% owner

LASKY MITCHELL · CIK 0001091435 · 10% owner

Puttagunta Chetan · CIK 0001695859 · 10% owner

Tavel Sarah E · CIK 0001774645 · 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: 9,538

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.

F13 · ownership.nature: Shares held by Chetan Puttagunta.

SEC source: 0001104659-22-088870 · tm2223068-3_4seq1.xml · nonDerivative · entry 14

Hu An-Yen · CIK 0001825956 · 10% owner

Cohler Matt · CIK 0001572685 · 10% owner

FENTON PETER H · CIK 0001219230 · 10% owner

GURLEY J WILLIAM · CIK 0001190191 · 10% owner

LASKY MITCHELL · CIK 0001091435 · 10% owner

Puttagunta Chetan · CIK 0001695859 · 10% owner

Tavel Sarah E · CIK 0001774645 · 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: 771

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.

F12 · ownership.nature: Shares held by An-Yen Hu's trust entity.