ACHR

SEC source: 0002064297-26-000006 · form4-05202026_120541.xml · nonDerivative · entry 3

Rungta Harsh · CIK 0002064297 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 87,210

F1 · kind: Represents shares of Class A Common Stock sold to satisfy tax withholding obligations incurred in connection with the vesting of restricted stock units.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.87 to $6.13 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the U.S. 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.

SEC source: 0002036956-26-000012 · form4-05202026_120555.xml · derivative · entry 7

Gupta Priya · CIK 0002036956 · Interim CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 102,910

Underlying: Class A Common Stock · 10,291 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.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the issuer's Class A Common Stock, subject to the reporting person's continued status as a service provider to the issuer.

F7 · derivative.exercise_date: The award vested or vests quarterly as to 1/12 of the total award, with the first tranche vested on March 1, 2026, and thereafter on May 15, August 15, November 15, and March 1

F5 · derivative.expiration_date: These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.

SEC source: 0002036956-26-000012 · form4-05202026_120555.xml · derivative · entry 6

Gupta Priya · CIK 0002036956 · Interim CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,144

Underlying: Class A Common Stock · 6,524 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.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the issuer's Class A Common Stock, subject to the reporting person's continued status as a service provider to the issuer.

F6 · derivative.exercise_date: The award vested or vests quarterly as to 1/12 of the total award, with the first tranche vested on March 1, 2025, and thereafter on May 15, August 15, November 15, and March 1.

F5 · derivative.expiration_date: These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.

SEC source: 0002036956-26-000012 · form4-05202026_120555.xml · derivative · entry 5

Gupta Priya · CIK 0002036956 · Interim CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,749

Underlying: Class A Common Stock · 3,583 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.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the issuer's Class A Common Stock, subject to the reporting person's continued status as a service provider to the issuer.

F4 · derivative.exercise_date: The award vested or vests quarterly as to 1/16 of the total award, with the first tranche vested on May 15, 2024, and thereafter on August 15, November 15, March 1, and May 15.

F5 · derivative.expiration_date: These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.

SEC source: 0002036956-26-000012 · form4-05202026_120555.xml · nonDerivative · entry 3

Gupta Priya · CIK 0002036956 · Interim CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 198,910

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

SEC source: 0002036956-26-000012 · form4-05202026_120555.xml · nonDerivative · entry 2

Gupta Priya · CIK 0002036956 · Interim CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 188,619

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

SEC source: 0002036956-26-000012 · form4-05202026_120555.xml · nonDerivative · entry 1

Gupta Priya · CIK 0002036956 · Interim CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 182,095

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

SEC source: 0002016416-26-000015 · form4-05202026_120517.xml · derivative · entry 15

Lentell Eric · CIK 0002016416 · Chief Legal & Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 154,364

Underlying: Class A Common Stock · 15,437 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.

F5 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock, subject to the reporting person's continued status as a service provider to the Issuer.

F12 · derivative.exercise_date: The award vested or vests quarterly as to 1/12 of the total award, with the first tranche vested on March 1, 2026, and thereafter on May 15, August 15, November 15, and March 1.

F7 · derivative.expiration_date: These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.

SEC source: 0002016416-26-000015 · form4-05202026_120517.xml · derivative · entry 14

Lentell Eric · CIK 0002016416 · Chief Legal & Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 156,576

Underlying: Class A Common Stock · 26,096 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.

F5 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock, subject to the reporting person's continued status as a service provider to the Issuer.

F11 · derivative.exercise_date: The award vested or vests quarterly as to 1/12 of the total award, with the first tranche vested on March 1, 2025, and thereafter on May 15, August 15, November 15, and March 1.

F7 · derivative.expiration_date: These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.

SEC source: 0002016416-26-000015 · form4-05202026_120517.xml · derivative · entry 13

Lentell Eric · CIK 0002016416 · Chief Legal & Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,618

Underlying: Class A Common Stock · 8,946 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.

F5 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock, subject to the reporting person's continued status as a service provider to the Issuer.

F10 · derivative.exercise_date: The award vested or vests quarterly as to 1/16 of the total award, with the first tranche vested on May 15, 2024, and thereafter on August 15, November 15, March 1, and May 15.

F7 · derivative.expiration_date: These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.

SEC source: 0002016416-26-000015 · form4-05202026_120517.xml · derivative · entry 12

Lentell Eric · CIK 0002016416 · Chief Legal & Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 59,390

Underlying: Class A Common Stock · 19,796 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.

F5 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock, subject to the reporting person's continued status as a service provider to the Issuer.

F9 · derivative.exercise_date: The award vested or vests quarterly as to 1/16 of the total award, with the first tranche vested on May 15, 2023, and thereafter on August 15, November 15, March 1, and May 15.

F7 · derivative.expiration_date: These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.

SEC source: 0002016416-26-000015 · form4-05202026_120517.xml · derivative · entry 11

Lentell Eric · CIK 0002016416 · Chief Legal & Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,866

Underlying: Class A Common Stock · 22,866 shares

Expires not disclosed

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

F5 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock, subject to the reporting person's continued status as a service provider to the Issuer.

F8 · derivative.exercise_date: The award vested or vests as to: (i) 1/4 of the total award on August 15, 2023; and (ii) 1/16 of the total award quarterly thereafter on November 15, March 1, May 15, and August 15.

F7 · derivative.expiration_date: These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.

SEC source: 0002016416-26-000015 · form4-05202026_120517.xml · derivative · entry 10

Lentell Eric · CIK 0002016416 · Chief Legal & Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,316

Underlying: Class A Common Stock · 7,301 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.

F5 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock, subject to the reporting person's continued status as a service provider to the Issuer.

F6 · derivative.exercise_date: The award shall vest as to 1/12 of the total award beginning on May 15, 2026, and thereafter quarterly on August 15th, November 15th, March 1st, May 15th.

F7 · derivative.expiration_date: These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.

SEC source: 0002016416-26-000015 · form4-05202026_120517.xml · derivative · entry 9

Lentell Eric · CIK 0002016416 · Chief Legal & Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 87,617

Underlying: Class A Common Stock · 87,617 shares

Expires not disclosed

F5 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock, subject to the reporting person's continued status as a service provider to the Issuer.

F6 · derivative.exercise_date: The award shall vest as to 1/12 of the total award beginning on May 15, 2026, and thereafter quarterly on August 15th, November 15th, March 1st, May 15th.

F7 · derivative.expiration_date: These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.

SEC source: 0002016416-26-000015 · form4-05202026_120517.xml · nonDerivative · entry 7

Lentell Eric · CIK 0002016416 · Chief Legal & Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 189,253

F1 · kind: Represents shares of Class A Common Stock sold to satisfy tax withholding obligations incurred in connection with the vesting of performance restricted stock units, which was separately reported on a Form 4 filed with the U.S. Securities and Exchange Commission on April 22, 2026.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.005 to $6.135 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote and in footnote 4 of this Form 4.

SEC source: 0002016416-26-000015 · form4-05202026_120517.xml · nonDerivative · entry 6

Lentell Eric · CIK 0002016416 · Chief Legal & Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 229,220

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

SEC source: 0002016416-26-000015 · form4-05202026_120517.xml · nonDerivative · entry 5

Lentell Eric · CIK 0002016416 · Chief Legal & Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 213,783

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

SEC source: 0002016416-26-000015 · form4-05202026_120517.xml · nonDerivative · entry 4

Lentell Eric · CIK 0002016416 · Chief Legal & Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 187,687

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

SEC source: 0002016416-26-000015 · form4-05202026_120517.xml · nonDerivative · entry 3

Lentell Eric · CIK 0002016416 · Chief Legal & Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 178,741

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

SEC source: 0002016416-26-000015 · form4-05202026_120517.xml · nonDerivative · entry 2

Lentell Eric · CIK 0002016416 · Chief Legal & Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 158,945

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

SEC source: 0002016416-26-000015 · form4-05202026_120517.xml · nonDerivative · entry 1

Lentell Eric · CIK 0002016416 · Chief Legal & Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 136,079

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

SEC source: 0001882348-26-000014 · form4-05202026_120521.xml · derivative · entry 10

Muniz Thomas Paul · CIK 0001882348 · CHIEF TECHNOLOGY OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 77,181

Underlying: Class A Common Stock · 7,719 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.

F5 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the issuer's Class A Common Stock, subject to the reporting person's continued status as a service provider to the issuer.

F10 · derivative.exercise_date: The award vested or vests quarterly as to 1/12 of the total award, with the first tranche vested on March 1, 2026, and thereafter on May 15, August 15, November 15, and March 1.

F7 · derivative.expiration_date: These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.

SEC source: 0001882348-26-000014 · form4-05202026_120521.xml · derivative · entry 9

Muniz Thomas Paul · CIK 0001882348 · CHIEF TECHNOLOGY OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,666

Underlying: Class A Common Stock · 7,611 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.

F5 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the issuer's Class A Common Stock, subject to the reporting person's continued status as a service provider to the issuer.

F9 · derivative.exercise_date: The award vested or vests quarterly as to 1/12 of the total award, with the first tranche vested on March 1, 2025, and thereafter on May 15, August 15, November 15, and March 1.

F7 · derivative.expiration_date: These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.

SEC source: 0001882348-26-000014 · form4-05202026_120521.xml · derivative · entry 8

Muniz Thomas Paul · CIK 0001882348 · CHIEF TECHNOLOGY OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,618

Underlying: Class A Common Stock · 8,946 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.

F5 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the issuer's Class A Common Stock, subject to the reporting person's continued status as a service provider to the issuer.

F8 · derivative.exercise_date: The award vested or vests quarterly as to 1/16 of the total award, with the first tranche vested on May 15, 2024, and thereafter on August 15, November 15, March 1, and May 15.

F7 · derivative.expiration_date: These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.

SEC source: 0001882348-26-000014 · form4-05202026_120521.xml · derivative · entry 7

Muniz Thomas Paul · CIK 0001882348 · CHIEF TECHNOLOGY OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 575,000

Underlying: Class A Common Stock · 143,750 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.

F5 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the issuer's Class A Common Stock, subject to the reporting person's continued status as a service provider to the issuer.

F6 · derivative.exercise_date: The award vested or vests as to: (i) 1/4 of the total award on May 15, 2024; and (ii) 1/16 of the total award quarterly thereafter on March 1, May 15, August 15, and November 15.

F7 · derivative.expiration_date: These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.

SEC source: 0001882348-26-000014 · form4-05202026_120521.xml · nonDerivative · entry 5

Muniz Thomas Paul · CIK 0001882348 · CHIEF TECHNOLOGY OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,554,153

F1 · kind: Represents shares of Class A Common Stock sold to satisfy tax withholding obligations incurred in connection with the vesting of performance restricted stock units, which was separately reported on a Form 4 filed with the U.S. Securities and Exchange Commission on April 22, 2026.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.005 to $6.135 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote and in footnote 4 of this Form 4.

SEC source: 0001882348-26-000014 · form4-05202026_120521.xml · nonDerivative · entry 4

Muniz Thomas Paul · CIK 0001882348 · CHIEF TECHNOLOGY OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,598,893

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

SEC source: 0001882348-26-000014 · form4-05202026_120521.xml · nonDerivative · entry 3

Muniz Thomas Paul · CIK 0001882348 · CHIEF TECHNOLOGY OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,591,174

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

SEC source: 0001882348-26-000014 · form4-05202026_120521.xml · nonDerivative · entry 2

Muniz Thomas Paul · CIK 0001882348 · CHIEF TECHNOLOGY OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,583,563

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

SEC source: 0001882348-26-000014 · form4-05202026_120521.xml · nonDerivative · entry 1

Muniz Thomas Paul · CIK 0001882348 · CHIEF TECHNOLOGY OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,574,617

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

SEC source: 0002064297-26-000006 · form4-05202026_120541.xml · derivative · entry 5

Rungta Harsh · CIK 0002064297 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 136,537

Underlying: Class A Common Stock · 12,412 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.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the issuer's Class A Common Stock, subject to the reporting person's continued status as a service provider to the issuer.

F6 · derivative.exercise_date: The award vested or vests quarterly as to 1/12 of the total award, with the first tranche vesting on May 15, 2026, and vesting thereafter on August 15, November 15, March 1, and May 15.

F5 · derivative.expiration_date: These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.

SEC source: 0002064297-26-000006 · form4-05202026_120541.xml · derivative · entry 4

Rungta Harsh · CIK 0002064297 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 152,272

Underlying: Class A Common Stock · 21,754 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.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the issuer's Class A Common Stock, subject to the reporting person's continued status as a service provider to the issuer.

F4 · derivative.exercise_date: The award vested or vests as to: (i) 1/3 of the total award on March 1, 2026; and (ii) 1/12 of the total award quarterly thereafter on May 15, August 15, November 15, and March 1.

F5 · derivative.expiration_date: These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.

SEC source: 0002064297-26-000006 · form4-05202026_120541.xml · nonDerivative · entry 2

Rungta Harsh · CIK 0002064297 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,624

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

SEC source: 0002064297-26-000006 · form4-05202026_120541.xml · nonDerivative · entry 1

Rungta Harsh · CIK 0002064297 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 87,212

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

SEC source: 0001882604-26-000005 · form4-05202026_120511.xml · derivative · entry 1

Goldstein Adam D · CIK 0001882604 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 788,552

Underlying: Class A Common Stock · 788,552 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock, subject to the reporting person's continued service to the Issuer as of the applicable vesting date.

F2 · derivative.exercise_date: The award shall vest as to 1/12 of the total award quarterly on each of August 15th, November 15th, March 1st, and May 15th. Once time-vested, the restricted stock units will be settled for shares of the Issuer's Class A Common Stock during calendar year 2031 on a date to be determined by the Issuer.

F3 · derivative.exercise_date: (Continued from footnote (2)) Notwithstanding the aforementioned deferral period, once vested, deferred stock units will automatically settle earlier upon the earliest to occur of: (i) the reporting person's death, disability, or separation from service with the Issuer, (ii) a Change in Control (as defined under the Issuer's 2021 Amended and Restated Equity Incentive Plan) or (iii) the occurrence of an "unforeseeable emergency" (as defined under Section 409A of the Internal Revenue Code). The events described in subclauses (i), (ii), and (iii) of the preceding sentence are referred to herein as the "Extraordinary Settlement Events." If an Extraordinary Settlement Event occurs before the applicable vesting date, then settlement will occur instead on the applicable vesting date.

F4 · derivative.expiration_date: These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.

SEC source: 0002064297-26-000004 · form4-05092026_120555.xml · derivative · entry 1

Rungta Harsh · CIK 0002064297 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 148,949

Underlying: Class A Common Stock · 148,949 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock, subject to the reporting person's continued status as a service provider to the Issuer.

F2 · derivative.exercise_date: The award shall vest quarterly as to 1/12 of the total award, with the first tranche vesting on May 15, 2026, and vesting thereafter on August 15, November 15, March 1, and May 15.

F3 · derivative.expiration_date: These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.

SEC source: 0002016416-26-000013 · form4-04232026_120446.xml · nonDerivative · entry 1

Lentell Eric · CIK 0002016416 · Chief Legal & Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 128,778

F1 · kind: The reported transaction represents the vesting of the second of three tranches of a March 26, 2024 performance-based restricted stock unit award granted to the reporting person by the Issuer's compensation committee, which vests based on the achievement of a relative total stockholder return over a defined performance period (the "2024 Performance Award") and is subject to the reporting person's continued service through the vesting date.

F2 · kind: On April 20, 2026 (the "Certification Date"), the Issuer's compensation committee certified achievement of the vesting criteria of the second tranche of the 2024 Performance Award, resulting in one-third of the 2024 Performance Award vesting at 164.87% of the target amount granted for the two-year performance period beginning on March 26, 2024 and ending on March 26, 2026. The performance restricted stock units comprising the second tranche of the 2024 Performance Award will be settled for shares of the Issuer's Class A common stock shortly following the Certification Date.

SEC source: 0001882348-26-000012 · form4-04232026_120425.xml · nonDerivative · entry 1

Muniz Thomas Paul · CIK 0001882348 · CHIEF TECHNOLOGY OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,430,867

F1 · kind: The reported transaction represents the vesting of the second of three tranches of a March 26, 2024 performance-based restricted stock unit award granted to the reporting person by the Issuer's compensation committee, which vests based on the achievement of a relative total stockholder return over a defined performance period (the "2024 Performance Award") and is subject to the reporting person's continued service through the vesting date.

F2 · kind: On April 20, 2026 (the "Certification Date"), the Issuer's compensation committee certified achievement of the vesting criteria of the second tranche of the 2024 Performance Award, resulting in one-third of the 2024 Performance Award vesting at 164.87% of the target amount granted for the two-year performance period beginning on March 26, 2024 and ending on March 26, 2026. The performance restricted stock units comprising the second tranche of the 2024 Performance Award will be settled for shares of the Issuer's Class A common stock shortly following the Certification Date.

SEC source: 0002016416-26-000010 · form4-03312026_110352.xml · nonDerivative · entry 2

Lentell Eric · CIK 0002016416 · Chief Legal & Strategy Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 50,119

F1 · kind: The transaction was executed pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 3, 2025, as amended on December 23, 2025.

F2 · kind: This transaction was effected to offset certain tax liabilities and other related costs incurred by the reporting person in connection with the previous settlement of restricted stock units.

F3 · balance_after: Following the reported transaction, in addition to the 50,119 shares of Class A Common Stock beneficially owned by the Reporting Person, the Reporting Person held restricted stock units representing contingent rights to receive up to an aggregate 548,955 shares of the Issuer's Class A Common Stock, which restricted stock units are subject to service-based vesting schedules and vest according to their respective terms.

SEC source: 0002016416-26-000010 · form4-03312026_110352.xml · nonDerivative · entry 1

Lentell Eric · CIK 0002016416 · Chief Legal & Strategy Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 100,119

F1 · kind: The transaction was executed pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 3, 2025, as amended on December 23, 2025.

F2 · kind: This transaction was effected to offset certain tax liabilities and other related costs incurred by the reporting person in connection with the previous settlement of restricted stock units.

SEC source: 0002036956-26-000009 · form4-03172026_120305.xml · nonDerivative · entry 1

Gupta Priya · CIK 0002036956 · Interim CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 178,512

F1 · kind: Represents shares of the issuer's Class A common stock sold to satisfy the reporting person's tax withholding obligations, which were incurred in connection with the vesting of the 2025 PRSU Award, which vesting was separately reported on a Form 4 filed with the U.S. Securities and Exchange Commission on March 12, 2026. In accordance with company policy, shares are automatically sold to cover such obligations.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.225 to $6.315 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the U.S. 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.

SEC source: 0002016416-26-000007 · form4-03172026_120315.xml · nonDerivative · entry 1

Lentell Eric · CIK 0002016416 · Chief Legal & Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 150,119

F1 · kind: Represents shares of the issuer's Class A common stock sold to satisfy the reporting person's tax withholding obligations, which were incurred in connection with the vesting of the 2025 PRSU Award, which vesting was separately reported on a Form 4 filed with the U.S. Securities and Exchange Commission on March 12, 2026. In accordance with company policy, shares are automatically sold to cover such obligations.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.225 to $6.315 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the U.S. 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.

SEC source: 0001797669-26-000007 · form4-03172026_120314.xml · nonDerivative · entry 1

Perkins Tosha · CIK 0001797669 · CHIEF ADMINISTRATIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 384,768

F1 · kind: Represents shares of the issuer's Class A common stock sold to satisfy the reporting person's tax withholding obligations, which were incurred in connection with the vesting of the 2025 PRSU Award, which vesting was separately reported on a Form 4 filed with the U.S. Securities and Exchange Commission on March 12, 2026. In accordance with company policy, shares are automatically sold to cover such obligations.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.225 to $6.315 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the U.S. 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.

SEC source: 0001882348-26-000009 · form4-03172026_120313.xml · nonDerivative · entry 1

Muniz Thomas Paul · CIK 0001882348 · CHIEF TECHNOLOGY OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,352,208

F1 · kind: Represents shares of the issuer's Class A common stock sold to satisfy the reporting person's tax withholding obligations, which were incurred in connection with the vesting of the 2025 PRSU Award, which vesting was separately reported on a Form 4 filed with the U.S. Securities and Exchange Commission on March 12, 2026. In accordance with company policy, shares are automatically sold to cover such obligations.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.225 to $6.315 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the U.S. 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.

SEC source: 0002036956-26-000006 · form4-03132026_120355.xml · nonDerivative · entry 1

Gupta Priya · CIK 0002036956 · Interim CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 185,775

F1 · kind: The reported transaction represents the certification of achievement of the first of three tranches of a performance-based restricted stock unit award granted to the reporting person by the Issuer's compensation committee on February 17, 2025 (the "2025 PRSU Award"). Vesting of each tranche of the 2025 PRSU Award is based on relative total stockholder return and is subject to the reporting person's continued service through the certification date of achievement of the relevant tranche.

F2 · kind: On March 10, 2026 (the "Certification Date"), the Issuer's compensation committee certified achievement of the first tranche of the 2025 PRSU Award, resulting in one-third of the 2025 PRSU Award becoming earned at 53.73% of the target amount granted. The performance restricted stock units comprising the first tranche of the 2025 PRSU Award so earned are fully vested and may be settled for shares of the Issuer's Class A common stock on the Certification Date.

SEC source: 0002016416-26-000005 · form4-03132026_120302.xml · nonDerivative · entry 1

Lentell Eric · CIK 0002016416 · Chief Legal & Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 158,178

F1 · kind: The reported transaction represents the certification of achievement of the first of three tranches of a performance-based restricted stock unit award granted to the reporting person by the Issuer's compensation committee on February 17, 2025 (the "2025 PRSU Award"). Vesting of each tranche of the 2025 PRSU Award is based on relative total stockholder return and is subject to the reporting person's continued service through the certification date of achievement of the relevant tranche.

F2 · kind: On March 10, 2026 (the "Certification Date"), the Issuer's compensation committee certified achievement of the first tranche of the 2025 PRSU Award, resulting in one-third of the 2025 PRSU Award becoming earned at 53.73% of the target amount granted. The performance restricted stock units comprising the first tranche of the 2025 PRSU Award so earned are fully vested and may be settled for shares of the Issuer's Class A common stock on the Certification Date.

SEC source: 0001797669-26-000005 · form4-03132026_120358.xml · nonDerivative · entry 1

Perkins Tosha · CIK 0001797669 · CHIEF ADMINISTRATIVE OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 395,717

F1 · kind: The reported transaction represents the certification of achievement of the first of three tranches of a performance-based restricted stock unit award granted to the reporting person by the Issuer's compensation committee on February 17, 2025 (the "2025 PRSU Award"). Vesting of each tranche of the 2025 PRSU Award is based on relative total stockholder return and is subject to the reporting person's continued service through the certification date of achievement of the relevant tranche.

F2 · kind: On March 10, 2026 (the "Certification Date"), the Issuer's compensation committee certified achievement of the first tranche of the 2025 PRSU Award, resulting in one-third of the 2025 PRSU Award becoming earned at 53.73% of the target amount granted. The performance restricted stock units comprising the first tranche of the 2025 PRSU Award so earned are fully vested and may be settled for shares of the Issuer's Class A common stock on the Certification Date.

SEC source: 0001882348-26-000007 · form4-03132026_120301.xml · nonDerivative · entry 1

Muniz Thomas Paul · CIK 0001882348 · CHIEF TECHNOLOGY OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,361,788

F1 · kind: The reported transaction represents the certification of achievement of the first of three tranches of a performance-based restricted stock unit award granted to the reporting person by the Issuer's compensation committee on February 17, 2025 (the "2025 PRSU Award"). Vesting of each tranche of the 2025 PRSU Award is based on relative total stockholder return and is subject to the reporting person's continued service through the certification date of achievement of the relevant tranche.

F2 · kind: On March 10, 2026 (the "Certification Date"), the Issuer's compensation committee certified achievement of the first tranche of the 2025 PRSU Award, resulting in one-third of the 2025 PRSU Award becoming earned at 53.73% of the target amount granted. The performance restricted stock units comprising the first tranche of the 2025 PRSU Award so earned are fully vested and may be settled for shares of the Issuer's Class A common stock on the Certification Date.

SEC source: 0002036956-26-000005 · form4-03102026_120316.xml · nonDerivative · entry 1

Gupta Priya · CIK 0002036956 · Interim CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 171,754

F1 · kind: Represents shares of Class A Common Stock sold to satisfy tax withholding obligations incurred in connection with the vesting of restricted stock units, which vesting was separately reported on a Form 4 filed with the U.S. Securities and Exchange Commission on March 3, 2026.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.315 to $6.775 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the U.S. 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.

F3 · balance_after: For clarity, the total reported in Table I after giving effect to the reported transaction has been corrected to reflect five additional shares not included in the reporting person's prior Section 16 reports. The shares were acquired by the reporting person in one or more transactions with the issuer pursuant to its employee stock purchase plan. Such transactions are exempt pursuant to Rules 16a3(f)(1)(i)(B) and 16b3(c), and were previously omitted due to administrative error.

SEC source: 0002016416-26-000004 · form4-03102026_120314.xml · nonDerivative · entry 1

Lentell Eric · CIK 0002016416 · Chief Legal & Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 139,483

F1 · kind: Represents shares of Class A Common Stock sold to satisfy tax withholding obligations incurred in connection with the vesting of restricted stock units, which vesting was separately reported on a Form 4 filed with the U.S. Securities and Exchange Commission on March 3, 2026.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.315 to $6.775 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the U.S. 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.

F3 · balance_after: For clarity, the total reported in Table I after giving effect to the reported transaction has been corrected to reflect one additional share not included in the reporting person's previous Form 4 filed on March 3, 2026, due to administrative error.