AMPL

SEC source: 0001567619-22-005405 · doc1.xml · nonDerivative · entry 3

Vuong Hoang · CIK 0001883031 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 238,498

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: Represents the conversion of Class A Common Stock into the Issuer's Class B Common Stock effected pursuant to an amendment to the Issuer's Amended and Restated 2014 Stock Option and Grant Plan, which gave holders a one-time right to exchange such shares of Class A Common Stock for an equal number of shares of Class B Common Stock.

SEC source: 0001567619-22-005405 · doc1.xml · nonDerivative · entry 2

Vuong Hoang · CIK 0001883031 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 242,186

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: 0001567619-22-005405 · doc1.xml · nonDerivative · entry 1

Vuong Hoang · CIK 0001883031 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 42,186

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: 0001562180-22-001458 · primarydocument.xml · derivative · entry 4

Heinz Matthew · CIK 0001883017 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 910,672

Underlying: Class A Common Stock · 7,581 shares

Expires 2029-10-31

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.

F3 · date: The option is early exercisable. 25% of the shares subject to the option vest on the first anniversary measured from October 15, 2019 (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 on the fourth anniversary of the Vesting Commencement Date.

F3 · derivative.exercise_date: The option is early exercisable. 25% of the shares subject to the option vest on the first anniversary measured from October 15, 2019 (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 on the fourth anniversary of the Vesting Commencement Date.

SEC source: 0001562180-22-001458 · primarydocument.xml · nonDerivative · entry 3

Heinz Matthew · CIK 0001883017 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 44,247

F1 · kind: The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0001562180-22-001458 · primarydocument.xml · nonDerivative · entry 2

Heinz Matthew · CIK 0001883017 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 44,328

F1 · kind: The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person.

F2 · price: 1. This transaction was executed in multiple trades in prices ranging from $45.00 to $45.27, 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: 0001562180-22-001458 · primarydocument.xml · nonDerivative · entry 1

Heinz Matthew · CIK 0001883017 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 51,828

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: 0001415889-23-002444 · form5-02142023_090240.xml · nonDerivative · entry 2

Lee Roger H · CIK 0001404868 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · The Roger and Clarissa Lee Irrevocable GST Trust

Disclosed balance after: 68,574

F2 · ownership.nature: Shares are held by The Roger and Clarissa Lee Irrevocable GST Trust (the "Lee Trust"), of which Roger Lee's brother is the trustee. Mr. Lee disclaims beneficial ownership of the shares held by the Lee Trust except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001415889-23-002444 · form5-02142023_090240.xml · nonDerivative · entry 1

Lee Roger H · CIK 0001404868 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · The Lee Family Trust

Disclosed balance after: 0

F1 · ownership.nature: Shares are held by The Lee Family Trust, of which Roger Lee is a co-trustee. Mr. Lee disclaims beneficial ownership of the shares held by The Lee Family Trust except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001562180-22-000463 · primarydocument.xml · derivative · entry 4

Heinz Matthew · CIK 0001883017 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 918,253

Underlying: Class A Common Stock · 7,500 shares

Expires 2029-10-31

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. 25% of the shares subject to the option vest on the first anniversary measured from October 15, 2019 (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 on the fourth anniversary of the Vesting Commencement Date.

SEC source: 0001562180-22-000463 · primarydocument.xml · nonDerivative · entry 3

Heinz Matthew · CIK 0001883017 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 44,247

F1 · kind: The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person.

F3 · price: This transaction was executed in multiple trades in prices ranging from $46.035 to $46.340, 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: 0001562180-22-000463 · primarydocument.xml · nonDerivative · entry 2

Heinz Matthew · CIK 0001883017 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 44,847

F1 · kind: The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person.

F2 · price: This transaction was executed in multiple trades in prices ranging from $45.00 to $45.955, 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: 0001562180-22-000463 · primarydocument.xml · nonDerivative · entry 1

Heinz Matthew · CIK 0001883017 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 51,747

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: 0001562180-22-000049 · primarydocument.xml · derivative · entry 10

Johnson Jennifer L. · CIK 0001882998 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 919,220

Underlying: Class A Common Stock · 24,843 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.

F8 · 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: 0001562180-22-000049 · primarydocument.xml · nonDerivative · entry 8

Johnson Jennifer L. · CIK 0001882998 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · kind: The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person.

F7 · price: This transaction was executed in multiple trades in prices ranging from $56.0200 to $57.0199, 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: 0001562180-22-000049 · primarydocument.xml · nonDerivative · entry 7

Johnson Jennifer L. · CIK 0001882998 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,344

F1 · kind: The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person.

F1 · price: The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person.

F6 · price: This transaction was executed in multiple trades in prices ranging from $55.0100 to $56.0099, 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: 0001562180-22-000049 · primarydocument.xml · nonDerivative · entry 6

Johnson Jennifer L. · CIK 0001882998 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,498

F1 · kind: The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person.

F2 · price: This transaction was executed in multiple trades in prices ranging from $53.00 to $53.99, 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.

F5 · price: This transaction was executed in multiple trades in prices ranging from $54.01 to $55.0099, 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: 0001562180-22-000049 · primarydocument.xml · nonDerivative · entry 5

Johnson Jennifer L. · CIK 0001882998 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,743

F1 · kind: The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person.

F4 · price: This transaction was executed in multiple trades in prices ranging from $52.87 to $53.87, 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: 0001562180-22-000049 · primarydocument.xml · nonDerivative · entry 4

Johnson Jennifer L. · CIK 0001882998 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,843

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: 0001562180-22-000048 · primarydocument.xml · derivative · entry 4

Vuong Hoang · CIK 0001883031 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 58,993

Underlying: Class A Common Stock · 7,374 shares

Expires 2029-06-04

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: 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 on the fourth anniversary of the Vesting Commencement Date.

SEC source: 0001562180-22-000048 · primarydocument.xml · nonDerivative · entry 3

Vuong Hoang · CIK 0001883031 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Indirect - Trust

Disclosed balance after: 0

F1 · kind: The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0001562180-22-000048 · primarydocument.xml · nonDerivative · entry 2

Vuong Hoang · CIK 0001883031 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 38,498

F1 · kind: The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0001562180-22-000048 · primarydocument.xml · nonDerivative · entry 1

Vuong Hoang · CIK 0001883031 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 38,746

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: 0001562180-22-000049 · primarydocument.xml · derivative · entry 9

Johnson Jennifer L. · CIK 0001882998 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 944,063

Underlying: Class A Common Stock · 49,687 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.

F8 · 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: 0001562180-22-000049 · primarydocument.xml · nonDerivative · entry 3

Johnson Jennifer L. · CIK 0001882998 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · kind: The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person.

F3 · price: This transaction was executed in multiple trades in prices ranging from $54.00 to $54.99, 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: 0001562180-22-000049 · primarydocument.xml · nonDerivative · entry 2

Johnson Jennifer L. · CIK 0001882998 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,721

F1 · kind: The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person.

F2 · price: This transaction was executed in multiple trades in prices ranging from $53.00 to $53.99, 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: 0001562180-22-000049 · primarydocument.xml · nonDerivative · entry 1

Johnson Jennifer L. · CIK 0001882998 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 49,687

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: 0000899243-21-048406 · doc4.xml · derivative · entry 3

Skates Spenser · CIK 0001882913 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,252,146

Underlying: Class A Common Stock · 189,000 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.

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, (b) the death or incapacity of the holder, (c) the date that is six months following the date on which the holder is no longer an employee or director of the Issuer (unless such holder has rejoined the Issuer during such six-month period) or (d) 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, (b) the death or incapacity of the holder, (c) the date that is six months following the date on which the holder is no longer an employee or director of the Issuer (unless such holder has rejoined the Issuer during such six-month period) or (d) 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, (b) the death or incapacity of the holder, (c) the date that is six months following the date on which the holder is no longer an employee or director of the Issuer (unless such holder has rejoined the Issuer during such six-month period) or (d) 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: 0000899243-21-048406 · doc4.xml · nonDerivative · entry 2

Skates Spenser · CIK 0001882913 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

SEC source: 0000899243-21-048406 · doc4.xml · nonDerivative · entry 1

Skates Spenser · CIK 0001882913 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 189,000

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 · 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, (b) the death or incapacity of the holder, (c) the date that is six months following the date on which the holder is no longer an employee or director of the Issuer (unless such holder has rejoined the Issuer during such six-month period) or (d) 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: 0001209191-21-069765 · doc4.xml · nonDerivative · entry 5

TOBIN SCOTT R · CIK 0001199926 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 0

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $54.60 to $55.39 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · balance_after: The shares held by the Reporting Person prior to the transactions reported herein reflect the receipt of shares pursuant to a pro rata distribution in kind, effected by Battery Investment Partners XI, LLC ("BIP XI") to its members for no additional consideration, including the Reporting Person. The receipt of such shares by the Reporting Person constituted a change in form of ownership from indirect to direct, which was exempt from reporting pursuant to Rule 16a-13.

F3 · balance_after: The shares held by the Reporting Person prior to the transactions reported herein include the receipt of shares pursuant to pro rata distributions in kind, effected by each of Battery Ventures XI-A, L.P. ("BV XI-A") and Battery Ventures XI-B, L.P. ("BV XI-B") to its general partner and limited partners for no additional consideration, and the further pro rata distribution in kind by the general partner of BV XI-A and BV XI-B , for no additional consideration to its members, including the Reporting Person. The receipt of such shares by the Reporting Person constituted a change in form of ownership from indirect to direct, which was exempt from reporting pursuant to Rule 16a-13.

F4 · balance_after: The shares held by the Reporting Person prior to the transactions reported herein include the receipt of shares pursuant to pro rata distributions in kind, effected by each of Battery Ventures XI-A Side Fund, L.P. ("BV XI-A SF") and Battery Ventures XI-B Side Fund, L.P. ("BV XI-B SF") to its general partner and limited partners for no additional consideration, and the further pro rata distribution in kind by the general partner of BV XI-A SF and BV XI-B SF, for no additional consideration to its members, including the Reporting Person. The receipt of such shares by the Reporting Person constituted a change in form of ownership from indirect to direct, which was exempt from reporting pursuant to Rule 16a-13.

F5 · ownership.nature: Shares are held by The Scott R. Tobin Irrevocable GST Trust of 2013 (the "Trust"), of which the Reporting Person's spouse is a trustee. The Reporting Person disclaims beneficial ownership of the shares held by the Trust except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001209191-21-069765 · doc4.xml · nonDerivative · entry 4

TOBIN SCOTT R · CIK 0001199926 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 2,590

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $53.58 to $54.47 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · balance_after: The shares held by the Reporting Person prior to the transactions reported herein reflect the receipt of shares pursuant to a pro rata distribution in kind, effected by Battery Investment Partners XI, LLC ("BIP XI") to its members for no additional consideration, including the Reporting Person. The receipt of such shares by the Reporting Person constituted a change in form of ownership from indirect to direct, which was exempt from reporting pursuant to Rule 16a-13.

F3 · balance_after: The shares held by the Reporting Person prior to the transactions reported herein include the receipt of shares pursuant to pro rata distributions in kind, effected by each of Battery Ventures XI-A, L.P. ("BV XI-A") and Battery Ventures XI-B, L.P. ("BV XI-B") to its general partner and limited partners for no additional consideration, and the further pro rata distribution in kind by the general partner of BV XI-A and BV XI-B , for no additional consideration to its members, including the Reporting Person. The receipt of such shares by the Reporting Person constituted a change in form of ownership from indirect to direct, which was exempt from reporting pursuant to Rule 16a-13.

F4 · balance_after: The shares held by the Reporting Person prior to the transactions reported herein include the receipt of shares pursuant to pro rata distributions in kind, effected by each of Battery Ventures XI-A Side Fund, L.P. ("BV XI-A SF") and Battery Ventures XI-B Side Fund, L.P. ("BV XI-B SF") to its general partner and limited partners for no additional consideration, and the further pro rata distribution in kind by the general partner of BV XI-A SF and BV XI-B SF, for no additional consideration to its members, including the Reporting Person. The receipt of such shares by the Reporting Person constituted a change in form of ownership from indirect to direct, which was exempt from reporting pursuant to Rule 16a-13.

F5 · ownership.nature: Shares are held by The Scott R. Tobin Irrevocable GST Trust of 2013 (the "Trust"), of which the Reporting Person's spouse is a trustee. The Reporting Person disclaims beneficial ownership of the shares held by the Trust except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001209191-21-069765 · doc4.xml · nonDerivative · entry 3

TOBIN SCOTT R · CIK 0001199926 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 4,790

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $52.21 to $53.15 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · balance_after: The shares held by the Reporting Person prior to the transactions reported herein reflect the receipt of shares pursuant to a pro rata distribution in kind, effected by Battery Investment Partners XI, LLC ("BIP XI") to its members for no additional consideration, including the Reporting Person. The receipt of such shares by the Reporting Person constituted a change in form of ownership from indirect to direct, which was exempt from reporting pursuant to Rule 16a-13.

F3 · balance_after: The shares held by the Reporting Person prior to the transactions reported herein include the receipt of shares pursuant to pro rata distributions in kind, effected by each of Battery Ventures XI-A, L.P. ("BV XI-A") and Battery Ventures XI-B, L.P. ("BV XI-B") to its general partner and limited partners for no additional consideration, and the further pro rata distribution in kind by the general partner of BV XI-A and BV XI-B , for no additional consideration to its members, including the Reporting Person. The receipt of such shares by the Reporting Person constituted a change in form of ownership from indirect to direct, which was exempt from reporting pursuant to Rule 16a-13.

F4 · balance_after: The shares held by the Reporting Person prior to the transactions reported herein include the receipt of shares pursuant to pro rata distributions in kind, effected by each of Battery Ventures XI-A Side Fund, L.P. ("BV XI-A SF") and Battery Ventures XI-B Side Fund, L.P. ("BV XI-B SF") to its general partner and limited partners for no additional consideration, and the further pro rata distribution in kind by the general partner of BV XI-A SF and BV XI-B SF, for no additional consideration to its members, including the Reporting Person. The receipt of such shares by the Reporting Person constituted a change in form of ownership from indirect to direct, which was exempt from reporting pursuant to Rule 16a-13.

F5 · ownership.nature: Shares are held by The Scott R. Tobin Irrevocable GST Trust of 2013 (the "Trust"), of which the Reporting Person's spouse is a trustee. The Reporting Person disclaims beneficial ownership of the shares held by the Trust except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001209191-21-069765 · doc4.xml · nonDerivative · entry 2

TOBIN SCOTT R · CIK 0001199926 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 16,488

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.21 to $52.19 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · balance_after: The shares held by the Reporting Person prior to the transactions reported herein reflect the receipt of shares pursuant to a pro rata distribution in kind, effected by Battery Investment Partners XI, LLC ("BIP XI") to its members for no additional consideration, including the Reporting Person. The receipt of such shares by the Reporting Person constituted a change in form of ownership from indirect to direct, which was exempt from reporting pursuant to Rule 16a-13.

F3 · balance_after: The shares held by the Reporting Person prior to the transactions reported herein include the receipt of shares pursuant to pro rata distributions in kind, effected by each of Battery Ventures XI-A, L.P. ("BV XI-A") and Battery Ventures XI-B, L.P. ("BV XI-B") to its general partner and limited partners for no additional consideration, and the further pro rata distribution in kind by the general partner of BV XI-A and BV XI-B , for no additional consideration to its members, including the Reporting Person. The receipt of such shares by the Reporting Person constituted a change in form of ownership from indirect to direct, which was exempt from reporting pursuant to Rule 16a-13.

F4 · balance_after: The shares held by the Reporting Person prior to the transactions reported herein include the receipt of shares pursuant to pro rata distributions in kind, effected by each of Battery Ventures XI-A Side Fund, L.P. ("BV XI-A SF") and Battery Ventures XI-B Side Fund, L.P. ("BV XI-B SF") to its general partner and limited partners for no additional consideration, and the further pro rata distribution in kind by the general partner of BV XI-A SF and BV XI-B SF, for no additional consideration to its members, including the Reporting Person. The receipt of such shares by the Reporting Person constituted a change in form of ownership from indirect to direct, which was exempt from reporting pursuant to Rule 16a-13.

F5 · ownership.nature: Shares are held by The Scott R. Tobin Irrevocable GST Trust of 2013 (the "Trust"), of which the Reporting Person's spouse is a trustee. The Reporting Person disclaims beneficial ownership of the shares held by the Trust except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001209191-21-069765 · doc4.xml · nonDerivative · entry 1

TOBIN SCOTT R · CIK 0001199926 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 25,420

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.21 to $51.19 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · balance_after: The shares held by the Reporting Person prior to the transactions reported herein reflect the receipt of shares pursuant to a pro rata distribution in kind, effected by Battery Investment Partners XI, LLC ("BIP XI") to its members for no additional consideration, including the Reporting Person. The receipt of such shares by the Reporting Person constituted a change in form of ownership from indirect to direct, which was exempt from reporting pursuant to Rule 16a-13.

F3 · balance_after: The shares held by the Reporting Person prior to the transactions reported herein include the receipt of shares pursuant to pro rata distributions in kind, effected by each of Battery Ventures XI-A, L.P. ("BV XI-A") and Battery Ventures XI-B, L.P. ("BV XI-B") to its general partner and limited partners for no additional consideration, and the further pro rata distribution in kind by the general partner of BV XI-A and BV XI-B , for no additional consideration to its members, including the Reporting Person. The receipt of such shares by the Reporting Person constituted a change in form of ownership from indirect to direct, which was exempt from reporting pursuant to Rule 16a-13.

F4 · balance_after: The shares held by the Reporting Person prior to the transactions reported herein include the receipt of shares pursuant to pro rata distributions in kind, effected by each of Battery Ventures XI-A Side Fund, L.P. ("BV XI-A SF") and Battery Ventures XI-B Side Fund, L.P. ("BV XI-B SF") to its general partner and limited partners for no additional consideration, and the further pro rata distribution in kind by the general partner of BV XI-A SF and BV XI-B SF, for no additional consideration to its members, including the Reporting Person. The receipt of such shares by the Reporting Person constituted a change in form of ownership from indirect to direct, which was exempt from reporting pursuant to Rule 16a-13.

F5 · ownership.nature: Shares are held by The Scott R. Tobin Irrevocable GST Trust of 2013 (the "Trust"), of which the Reporting Person's spouse is a trustee. The Reporting Person disclaims beneficial ownership of the shares held by the Trust except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001104659-22-021484 · tm225985d1_5.xml · nonDerivative · entry 2

Vishria Eric · CIK 0001617474 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 87,183

F1 · ownership.nature: Shares are held by entities controlled by the reporting person.

SEC source: 0001104659-22-021484 · tm225985d1_5.xml · nonDerivative · entry 1

Vishria Eric · CIK 0001617474 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 132,183

F1 · ownership.nature: Shares are held by entities controlled by the reporting person.

SEC source: 0001209191-21-068805 · doc4.xml · nonDerivative · entry 1

Elhafed Morad · CIK 0001869518 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $62.25 to $62.53 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · balance_after: The shares held by the Reporting Person prior to the transactions reported herein reflect the receipt of shares pursuant to a pro rata distribution in kind, effected by Battery Investment Partners XI, LLC to its members for no additional consideration, including the Reporting Person. The receipt of such shares by the Reporting Person was exempt from reporting pursuant to Rule 16a-9.

F3 · balance_after: The shares held by the Reporting Person prior to the transactions reported herein include the receipt of shares pursuant to pro rata distributions in kind, effected by each of Battery Ventures XI-A, L.P. ("BV XI-A") and Battery Ventures XI-B, L.P. ("BV XI-B") to its general partner and limited partners for no additional consideration, and the further pro rata distribution in kind by the general partner of BV XI-A and BV XI-B , for no additional consideration to its members, including the Reporting Person. The receipt of such shares by the Reporting Person was exempt from reporting pursuant to Rule 16a-9.

F4 · balance_after: The shares held by the Reporting Person prior to the transactions reported herein include the receipt of shares pursuant to pro rata distributions in kind, effected by each of Battery Ventures XI-A Side Fund, L.P. ("BV XI-A SF") and Battery Ventures XI-B Side Fund, L.P. ("BV XI-B SF") to its general partner and limited partners for no additional consideration, and the further pro rata distribution in kind by the general partner of BV XI-A SF and BV XI-B SF, for no additional consideration to its members, including the Reporting Person. The receipt of such shares by the Reporting Person was exempt from reporting pursuant to Rule 16a-9.

SEC source: 0001104659-21-148160 · tm2135006-1_4seq1.xml · nonDerivative · entry 2

FENTON PETER H · CIK 0001219230 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 83,677

F3 · price: Represents the weighted-average sale price per share of a series of transactions, all of which were executed on December 7, 2021. The actual sale prices ranged from a low of $60.92 to a high of $61.315, 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 Peter H. Fenton's trust entities.

SEC source: 0001104659-21-148160 · tm2135006-1_4seq1.xml · nonDerivative · entry 1

FENTON PETER H · CIK 0001219230 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 86,377

F1 · price: Represents the weighted-average sale price per share of a series of transactions, all of which were executed on December 7, 2021. The actual sale prices ranged from a low of $59.92 to a high of $60.88, 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 Peter H. Fenton's trust entities.

SEC source: 0001104659-21-145909 · tm2134417d1_4seq1.xml · nonDerivative · entry 1

Hu An-Yen · CIK 0001825956 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 240

F1 · price: Represents the weighted-average sale price per share of a series of transactions, all of which were executed on November 30, 2021. The actual sale prices ranged from a low of $68.00 to a high of $68.27, 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 An-Yen Hu's trust entity.

SEC source: 0001209191-21-067272 · 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: 29,930

F17 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $71.00 to $71.64 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F18 · balance_after: Reflects receipt of shares in the distribution in kind described in footnotes (1), (13) and (16).

F19 · ownership.direct: Shares are held by Jesse Feldman.

SEC source: 0001209191-21-067272 · 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: 0001209191-21-067272 · 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: 150,939

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: 0001209191-21-067272 · 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: 0001209191-21-067272 · 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: 150,939

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: 0001209191-21-067272 · 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: 94,176

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: 0001209191-21-067272 · 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: 110,454

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: 0001209191-21-067272 · 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: 434,310

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: 0001209191-21-067272 · 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: 418,032

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.