BRZE

SEC source: 0001415889-25-010654 · form4-04142025_110426.xml · nonDerivative · entry 7

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: No plan indicated

Ownership: Indirect · By Battery Ventures XI-A, L.P.

Disclosed balance after: 69,963

F8 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by BV XI-A to its general partner and limited partners without additional consideration.

F3 · ownership.nature: Securities are held byBattery 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 securities held by BV XI-A. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010654 · form4-04142025_110426.xml · nonDerivative · entry 6

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: No plan indicated

Ownership: Indirect · By Battery Investment Partners XI, LLC

Disclosed balance after: 3,241

F7 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by BIP XI to its members without additional consideration.

F2 · ownership.nature: Securities are 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 securities held by BIP XI. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010636 · form4-04142025_100402.xml · nonDerivative · entry 14

Agrawal Neeraj · CIK 0001532809 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Battery Partners XI Side Fund, LLC

Disclosed balance after: 0

F17 · 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.

F16 · ownership.nature: Securities are held by BP XI SF. The Reporting Person is a managing member of BP XI SF and may be deemed to share voting and dispositive power over these securities. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0001415889-25-010636 · form4-04142025_100402.xml · nonDerivative · entry 13

Agrawal Neeraj · CIK 0001532809 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Battery Partners XI Side Fund, LLC

Disclosed balance after: 369,104

F15 · kind: Represents receipt of securities in the distributions in kind described in footnotes (10) and (11).

F16 · ownership.nature: Securities are held by BP XI SF. The Reporting Person is a managing member of BP XI SF and may be deemed to share voting and dispositive power over these securities. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0001415889-25-010636 · form4-04142025_100402.xml · nonDerivative · entry 12

Agrawal Neeraj · CIK 0001532809 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Battery Partners XI, LLC

Disclosed balance after: 0

F14 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by BP XI to its members without consideration.

F13 · ownership.nature: Securities are held by BP XI. The Reporting Person is a managing member of BP XI and may be deemed to share voting and dispositive power over these securities. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0001415889-25-010636 · form4-04142025_100402.xml · nonDerivative · entry 11

Agrawal Neeraj · CIK 0001532809 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Battery Partners XI, LLC

Disclosed balance after: 298,284

F12 · kind: Represents receipt of securities in the distributions in kind described in footnotes (8) and (9).

F13 · ownership.nature: Securities are held by BP XI. The Reporting Person is a managing member of BP XI and may be deemed to share voting and dispositive power over these securities. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0001415889-25-010636 · form4-04142025_100402.xml · nonDerivative · entry 10

Agrawal Neeraj · CIK 0001532809 · Director

10b5-1 filing: No plan indicated

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

Disclosed balance after: 15,764

F11 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by BV XI-B SF to its general partner and limited partners without additional consideration.

F6 · ownership.nature: Securities are held by Battery Ventures XI-B Side Fund, L.P. ("BV XI-B SF"). The sole general partner of BV XI-B SF is BP XI SF. The Reporting Person is a managing member of BP XI SF and may be deemed to share voting and dispositive power over these securities. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0001415889-25-010636 · form4-04142025_100402.xml · nonDerivative · entry 9

Agrawal Neeraj · CIK 0001532809 · Director

10b5-1 filing: No plan indicated

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

Disclosed balance after: 72,684

F10 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by BV XI-A SF to its general partner and limited partners without additional consideration.

F5 · ownership.nature: Securities are held by Battery Ventures XI-A Side Fund, L.P. ("BV XI-A SF"). The sole general partner of BV XI-A SF is Battery Partners XI Side Fund, LLC ("BP XI SF"). The Reporting Person is a managing member of BP XI SF and may be deemed to share voting and dispositive power over these securities. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0001415889-25-010636 · form4-04142025_100402.xml · nonDerivative · entry 8

Agrawal Neeraj · CIK 0001532809 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Battery Ventures XI-B, L.P.

Disclosed balance after: 18,485

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

F4 · ownership.nature: Securities are held by Battery Ventures XI-B, L.P. ("BV XI-B"). The sole general partner of BV XI-B is BP XI. The Reporting Person is a managing member of BP XI and may be deemed to share voting and dispositive power over these securities. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0001415889-25-010636 · form4-04142025_100402.xml · nonDerivative · entry 7

Agrawal Neeraj · CIK 0001532809 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Battery Ventures XI-A, L.P.

Disclosed balance after: 69,963

F8 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by BV XI-A to its general partner and limited partners without additional consideration.

F3 · ownership.nature: Securities are held by Battery Ventures XI-A, L.P. ("BV XI-A"). The sole general partner of BV XI-A is BP XI. The Reporting Person is a managing member of BP XI and may be deemed to share voting and dispositive power over these securities. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0001415889-25-010636 · form4-04142025_100402.xml · nonDerivative · entry 6

Agrawal Neeraj · CIK 0001532809 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Battery Investment Partners XI, LLC

Disclosed balance after: 3,241

F7 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by BIP XI to its members without additional consideration.

F2 · ownership.nature: Securities are held by Battery Investment Partners XI, LLC ("BIP XI"). The sole managing member of BIP XI is Battery Partners XI, LLC ("BP XI"). The Reporting Person is a managing member of BP XI and may be deemed to share voting and dispositive power over these securities. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0001415889-25-010538 · form4-04102025_040404.xml · nonDerivative · entry 2

Agrawal Neeraj · CIK 0001532809 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 270,677

F1 · kind: Represents the contribution of shares from the Reporting Person to the Neeraj Agrawal Irrevocable GST Trust of 2013 in exchange for cash and securities of equivalent value.

F1 · price: Represents the contribution of shares from the Reporting Person to the Neeraj Agrawal Irrevocable GST Trust of 2013 in exchange for cash and securities of equivalent value.

F2 · balance_after: The securities held by the Reporting Person prior to the transaction reported herein reflect pro rata distributions in kind for no additional consideration, effected by each of Battery Ventures XI-A, L.P. ("BV XI-A"), Battery Ventures XI-B, L.P. ("BV XI-B"), 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 their respective general and limited partners, and the further pro rata distributions in kind, for no additional consideration, of the shares received in such distributions by their general partners, Battery Partners XI, LLC ("BP XI") and Battery Partners XI Side Fund, LLC ("BP XI SF"), to their respective members, including the Reporting Person. The receipt of such securities by the Reporting Person constituted a change in form of ownership and, therefore, was not required to be reported pursuant to Section 16.

F3 · balance_after: The securities held by the Reporting Person prior to the transaction reported herein reflect pro rata distributions 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 securities by the Reporting Person constituted a change in form of ownership and, therefore, was not required to be reported pursuant to Section 16.

F4 · ownership.nature: Securities are held by the Neeraj Agrawal Irrevocable GST Trust of 2013, of which the Reporting Person's spouse is the trustee. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001415889-25-010538 · form4-04102025_040404.xml · nonDerivative · entry 1

Agrawal Neeraj · CIK 0001532809 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,551

F1 · kind: Represents the contribution of shares from the Reporting Person to the Neeraj Agrawal Irrevocable GST Trust of 2013 in exchange for cash and securities of equivalent value.

F1 · price: Represents the contribution of shares from the Reporting Person to the Neeraj Agrawal Irrevocable GST Trust of 2013 in exchange for cash and securities of equivalent value.

F2 · balance_after: The securities held by the Reporting Person prior to the transaction reported herein reflect pro rata distributions in kind for no additional consideration, effected by each of Battery Ventures XI-A, L.P. ("BV XI-A"), Battery Ventures XI-B, L.P. ("BV XI-B"), 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 their respective general and limited partners, and the further pro rata distributions in kind, for no additional consideration, of the shares received in such distributions by their general partners, Battery Partners XI, LLC ("BP XI") and Battery Partners XI Side Fund, LLC ("BP XI SF"), to their respective members, including the Reporting Person. The receipt of such securities by the Reporting Person constituted a change in form of ownership and, therefore, was not required to be reported pursuant to Section 16.

SEC source: 0001676238-25-000058 · wk-form4_1744156111.xml · derivative · entry 8

Wiseman Susan · CIK 0001889752 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 15,000 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: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F1 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F1 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

SEC source: 0001676238-25-000058 · wk-form4_1744156111.xml · derivative · entry 7

Wiseman Susan · CIK 0001889752 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,000

Underlying: Class A Common Stock · 15,000 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: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F1 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F1 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

SEC source: 0001676238-25-000058 · wk-form4_1744156111.xml · derivative · entry 6

Wiseman Susan · CIK 0001889752 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,425

Underlying: Class B Common Stock · 15,000 shares

Expires 2030-02-03

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: This award is fully vested.

F1 · derivative.underlying: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

SEC source: 0001676238-25-000058 · wk-form4_1744156111.xml · derivative · entry 5

Wiseman Susan · CIK 0001889752 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 15,735 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: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F1 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F1 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

SEC source: 0001676238-25-000058 · wk-form4_1744156111.xml · derivative · entry 4

Wiseman Susan · CIK 0001889752 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,735

Underlying: Class A Common Stock · 15,735 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: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F1 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F1 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

SEC source: 0001676238-25-000058 · wk-form4_1744156111.xml · derivative · entry 3

Wiseman Susan · CIK 0001889752 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class B Common Stock · 15,735 shares

Expires 2029-03-11

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: This award is fully vested.

F1 · derivative.underlying: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

SEC source: 0001676238-25-000058 · wk-form4_1744156111.xml · nonDerivative · entry 2

Wiseman Susan · CIK 0001889752 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 248,999

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.96 to $31.00 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: Of the reported shares, 108,677 shares are represented by restricted stock units.

SEC source: 0001676238-25-000058 · wk-form4_1744156111.xml · nonDerivative · entry 1

Wiseman Susan · CIK 0001889752 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 253,166

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: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F2 · balance_after: Of the reported shares, 108,677 shares are represented by restricted stock units.

SEC source: 0001415889-25-010652 · form4-04142025_110403.xml · derivative · entry 33

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

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

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

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

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

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

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

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

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

10b5-1 filing: No plan indicated

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

Disclosed balance after: 486,717

Underlying: Class A Common Stock · 262,489 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.

F35 · price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F35 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F35 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F6 · ownership.nature: Securities are 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 securities held by BV XI-B SF. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI SF and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010652 · form4-04142025_110403.xml · derivative · entry 32

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

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

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

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

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

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

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

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

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

10b5-1 filing: No plan indicated

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

Disclosed balance after: 2,244,625

Underlying: Class A Common Stock · 1,210,511 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.

F35 · price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F35 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F35 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F5 · ownership.nature: Securities are 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 securities held by BV XI-A SF. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI SF and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010652 · form4-04142025_110403.xml · derivative · entry 31

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

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

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

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

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

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

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

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Battery Ventures XI-B, L.P.

Disclosed balance after: 570,848

Underlying: Class A Common Stock · 307,857 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.

F35 · price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F35 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F35 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F4 · ownership.nature: Securities are 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 securities held by BV XI-B. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010652 · form4-04142025_110403.xml · derivative · entry 30

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

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

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

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

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

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

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

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Battery Ventures XI-A, L.P.

Disclosed balance after: 2,160,494

Underlying: Class A Common Stock · 1,165,143 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.

F35 · price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F35 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F35 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F3 · ownership.nature: Securities are held byBattery 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 securities held by BV XI-A. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010652 · form4-04142025_110403.xml · derivative · entry 29

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

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

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

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

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

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

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

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Battery Investment Partners XI, LLC

Disclosed balance after: 100,137

Underlying: Class A Common Stock · 54,000 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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F1 · price: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F35 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F35 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F2 · ownership.nature: Securities are 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 securities held by BIP XI. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010652 · form4-04142025_110403.xml · nonDerivative · entry 5

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

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

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

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

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

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

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

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

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

10b5-1 filing: No plan indicated

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

Disclosed balance after: 283,064

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: Securities are 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 securities held by BV XI-B SF. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI SF and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010652 · form4-04142025_110403.xml · nonDerivative · entry 4

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

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

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

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

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

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

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

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

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

10b5-1 filing: No plan indicated

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

Disclosed balance after: 1,305,384

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: Securities are 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 securities held by BV XI-A SF. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI SF and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010652 · form4-04142025_110403.xml · nonDerivative · entry 3

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

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

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

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

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

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

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

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Battery Ventures XI-B, L.P.

Disclosed balance after: 331,985

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: Securities are 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 securities held by BV XI-B. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010652 · form4-04142025_110403.xml · nonDerivative · entry 2

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

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

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

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

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

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

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

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Battery Ventures XI-A, L.P.

Disclosed balance after: 1,256,463

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: Securities are held byBattery 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 securities held by BV XI-A. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010652 · form4-04142025_110403.xml · nonDerivative · entry 1

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

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

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

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

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

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

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

BROWN MICHAEL MAURICE · CIK 0001354614 · 10% owner

Feldman Jesse · CIK 0001568322 · 10% owner

FLEISCHER RUSSELL L · CIK 0001108424 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Battery Investment Partners XI, LLC

Disclosed balance after: 58,233

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: Securities are 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 securities held by BIP XI. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010654 · form4-04142025_110426.xml · derivative · entry 33

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: No plan indicated

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

Disclosed balance after: 486,717

Underlying: Class A Common Stock · 262,489 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.

F35 · price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F35 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F35 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F6 · ownership.nature: Securities are 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 securities held by BV XI-B SF. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI SF and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010654 · form4-04142025_110426.xml · derivative · entry 32

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: No plan indicated

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

Disclosed balance after: 2,244,625

Underlying: Class A Common Stock · 1,210,511 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.

F35 · price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F35 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F35 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F5 · ownership.nature: Securities are 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 securities held by BV XI-A SF. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI SF and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010654 · form4-04142025_110426.xml · derivative · entry 31

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: No plan indicated

Ownership: Indirect · By Battery Ventures XI-B, L.P.

Disclosed balance after: 570,848

Underlying: Class A Common Stock · 307,857 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.

F35 · price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F35 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F35 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F4 · ownership.nature: Securities are 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 securities held by BV XI-B. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010654 · form4-04142025_110426.xml · derivative · entry 30

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: No plan indicated

Ownership: Indirect · By Battery Ventures XI-A, L.P.

Disclosed balance after: 2,160,494

Underlying: Class A Common Stock · 1,165,143 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.

F35 · price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F35 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F35 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F3 · ownership.nature: Securities are held byBattery 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 securities held by BV XI-A. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010654 · form4-04142025_110426.xml · derivative · entry 29

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: No plan indicated

Ownership: Indirect · By Battery Investment Partners XI, LLC

Disclosed balance after: 100,137

Underlying: Class A Common Stock · 54,000 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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F1 · price: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F35 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F35 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F2 · ownership.nature: Securities are 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 securities held by BIP XI. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010654 · form4-04142025_110426.xml · nonDerivative · entry 5

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: No plan indicated

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

Disclosed balance after: 283,064

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: Securities are 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 securities held by BV XI-B SF. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI SF and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010654 · form4-04142025_110426.xml · nonDerivative · entry 4

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: No plan indicated

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

Disclosed balance after: 1,305,384

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: Securities are 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 securities held by BV XI-A SF. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI SF and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010654 · form4-04142025_110426.xml · nonDerivative · entry 3

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: No plan indicated

Ownership: Indirect · By Battery Ventures XI-B, L.P.

Disclosed balance after: 331,985

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: Securities are 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 securities held by BV XI-B. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010654 · form4-04142025_110426.xml · nonDerivative · entry 2

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: No plan indicated

Ownership: Indirect · By Battery Ventures XI-A, L.P.

Disclosed balance after: 1,256,463

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: Securities are held byBattery 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 securities held by BV XI-A. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010654 · form4-04142025_110426.xml · nonDerivative · entry 1

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: No plan indicated

Ownership: Indirect · By Battery Investment Partners XI, LLC

Disclosed balance after: 58,233

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: Securities are 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 securities held by BIP XI. Neeraj Agrawal, Michael M. Brown, Jesse R. Feldman, Russell L. Fleischer, Roger H. Lee, Chelsea R. Stoner, Dharmesh Thakker and Scott R. Tobin are the managing members of BP XI and may be deemed to share voting and dispositive power over these securities. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of its, his or her 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: 0001415889-25-010636 · form4-04142025_100402.xml · derivative · entry 24

Agrawal Neeraj · CIK 0001532809 · Director

10b5-1 filing: No plan indicated

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

Disclosed balance after: 486,717

Underlying: Class A Common Stock · 262,489 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.

F24 · price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F24 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F24 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F6 · ownership.nature: Securities are held by Battery Ventures XI-B Side Fund, L.P. ("BV XI-B SF"). The sole general partner of BV XI-B SF is BP XI SF. The Reporting Person is a managing member of BP XI SF and may be deemed to share voting and dispositive power over these securities. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0001415889-25-010636 · form4-04142025_100402.xml · derivative · entry 23

Agrawal Neeraj · CIK 0001532809 · Director

10b5-1 filing: No plan indicated

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

Disclosed balance after: 2,244,625

Underlying: Class A Common Stock · 1,210,511 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.

F24 · price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F24 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F24 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F5 · ownership.nature: Securities are held by Battery Ventures XI-A Side Fund, L.P. ("BV XI-A SF"). The sole general partner of BV XI-A SF is Battery Partners XI Side Fund, LLC ("BP XI SF"). The Reporting Person is a managing member of BP XI SF and may be deemed to share voting and dispositive power over these securities. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0001415889-25-010636 · form4-04142025_100402.xml · derivative · entry 22

Agrawal Neeraj · CIK 0001532809 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Battery Ventures XI-B, L.P.

Disclosed balance after: 570,848

Underlying: Class A Common Stock · 307,857 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.

F24 · price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F24 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F24 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F4 · ownership.nature: Securities are held by Battery Ventures XI-B, L.P. ("BV XI-B"). The sole general partner of BV XI-B is BP XI. The Reporting Person is a managing member of BP XI and may be deemed to share voting and dispositive power over these securities. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0001415889-25-010636 · form4-04142025_100402.xml · derivative · entry 21

Agrawal Neeraj · CIK 0001532809 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Battery Ventures XI-A, L.P.

Disclosed balance after: 2,160,494

Underlying: Class A Common Stock · 1,165,143 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.

F24 · price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F24 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F24 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F3 · ownership.nature: Securities are held by Battery Ventures XI-A, L.P. ("BV XI-A"). The sole general partner of BV XI-A is BP XI. The Reporting Person is a managing member of BP XI and may be deemed to share voting and dispositive power over these securities. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0001415889-25-010636 · form4-04142025_100402.xml · derivative · entry 20

Agrawal Neeraj · CIK 0001532809 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Battery Investment Partners XI, LLC

Disclosed balance after: 100,137

Underlying: Class A Common Stock · 54,000 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: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F1 · price: These shares of Class B common stock were converted on a one-for-one basis into Class A common stock.

F24 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F24 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock (A) at any time at the option of the Reporting Person or (B) automatically upon the occurrence of the following: (1) the transfer of such share of Class B Common Stock, except for certain transfers whereby the Reporting Person continues to hold sole voting and dispositive power with respect to each such share, (2) the death of a Class B common stockholder who is a natural person, (3) the last trading day of the fiscal quarter immediately following the fifth anniversary of the Issuer's initial public offering, (4) the date specified by affirmative vote of the holders of a majority of the outstanding shares of Class B common stock and (5) the last trading day of the fiscal quarter during which the then outstanding shares of Class B Common Stock first represent less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock.

F2 · ownership.nature: Securities are held by Battery Investment Partners XI, LLC ("BIP XI"). The sole managing member of BIP XI is Battery Partners XI, LLC ("BP XI"). The Reporting Person is a managing member of BP XI and may be deemed to share voting and dispositive power over these securities. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0001415889-25-010636 · form4-04142025_100402.xml · nonDerivative · entry 5

Agrawal Neeraj · CIK 0001532809 · Director

10b5-1 filing: No plan indicated

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

Disclosed balance after: 283,064

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: Securities are held by Battery Ventures XI-B Side Fund, L.P. ("BV XI-B SF"). The sole general partner of BV XI-B SF is BP XI SF. The Reporting Person is a managing member of BP XI SF and may be deemed to share voting and dispositive power over these securities. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0001415889-25-010636 · form4-04142025_100402.xml · nonDerivative · entry 4

Agrawal Neeraj · CIK 0001532809 · Director

10b5-1 filing: No plan indicated

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

Disclosed balance after: 1,305,384

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: Securities are held by Battery Ventures XI-A Side Fund, L.P. ("BV XI-A SF"). The sole general partner of BV XI-A SF is Battery Partners XI Side Fund, LLC ("BP XI SF"). The Reporting Person is a managing member of BP XI SF and may be deemed to share voting and dispositive power over these securities. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0001415889-25-010636 · form4-04142025_100402.xml · nonDerivative · entry 3

Agrawal Neeraj · CIK 0001532809 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Battery Ventures XI-B, L.P.

Disclosed balance after: 331,985

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: Securities are held by Battery Ventures XI-B, L.P. ("BV XI-B"). The sole general partner of BV XI-B is BP XI. The Reporting Person is a managing member of BP XI and may be deemed to share voting and dispositive power over these securities. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

SEC source: 0001415889-25-010636 · form4-04142025_100402.xml · nonDerivative · entry 2

Agrawal Neeraj · CIK 0001532809 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Battery Ventures XI-A, L.P.

Disclosed balance after: 1,256,463

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: Securities are held by Battery Ventures XI-A, L.P. ("BV XI-A"). The sole general partner of BV XI-A is BP XI. The Reporting Person is a managing member of BP XI and may be deemed to share voting and dispositive power over these securities. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.