RIVN

SEC source: 0001262742-26-000017 · wk-form4_1790977870.xml · nonDerivative · entry 1

CALLAHAN MICHAEL JOHN · CIK 0001262742 · Chief Administrative Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,001,776

F1 · kind: The sale reported in this transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 12, 2026, as described in the Issuer's Quarterly Report on Form 10-Q for the three months ended June 30, 2026, filed with the Securities and Exchange Commission on July 30, 2026.

SEC source: 0001262742-26-000014 · wk-form4_1789552810.xml · nonDerivative · entry 1

CALLAHAN MICHAEL JOHN · CIK 0001262742 · Chief Administrative Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,016,776

F1 · kind: The sale reported in this transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 12, 2026, as described in the Issuer's Quarterly Report on Form 10-Q for the three months ended June 30, 2026, filed with the Securities and Exchange Commission on July 30, 2026.

F2 · price: The price reported is a weighted average sale price. The shares were sold in multiple transactions at prices ranging from $16.175 to $16.52, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001890925-26-000025 · wk-form4_1787361845.xml · nonDerivative · entry 1

McDonough Claire · CIK 0001890925 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 819,178

F1 · kind: The sale reported in this transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 2, 2025, as described in the Issuer's Quarterly Report on Form 10-Q for the three months ended September 30, 2025, filed with the Securities and Exchange Commission on November 4, 2025.

SEC source: 0001890925-26-000023 · wk-form4_1787088293.xml · nonDerivative · entry 2

McDonough Claire · CIK 0001890925 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 827,201

F3 · kind: The sale reported in this transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 2, 2025, as described in the Issuer's Quarterly Report on Form 10-Q for the three months ended September 30, 2025, filed with the Securities and Exchange Commission on November 4, 2025.

F4 · price: The price reported is a weighted average sale price. The shares were sold in multiple transactions at prices ranging from $14.4050 to $14.67, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001943929-26-000014 · wk-form4_1787088239.xml · nonDerivative · entry 1

Venkataratnam Sreela · CIK 0001943929 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 564,599

F1 · shares: 20,297 shares of Class A Common Stock were withheld by the Company for the purposes of satisfying tax withholding obligations in connection with the vesting of 39,890 Restricted Stock Units on August 15, 2026.

F2 · price: The closing price of the Issuer's Class A Common Stock on August 14, 2026.

SEC source: 0001262742-26-000012 · wk-form4_1787088267.xml · nonDerivative · entry 1

CALLAHAN MICHAEL JOHN · CIK 0001262742 · Chief Administrative Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,031,776

F1 · shares: 42,082 shares of Class A Common Stock were withheld by the Company for the purposes of satisfying tax withholding obligations in connection with the vesting of 82,704 Restricted Stock Units on August 15, 2026.

F2 · price: The closing price of the Issuer's Class A Common Stock on August 14, 2026.

SEC source: 0001891517-26-000027 · wk-form4_1787088336.xml · nonDerivative · entry 1

Scaringe Robert J · CIK 0001891517 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 878,253

F1 · shares: 44,033 shares of Class A Common Stock were withheld by the Company for the purposes of satisfying tax withholding obligations in connection with the vesting of 86,539 Restricted Stock Units on August 15, 2026.

F2 · price: The closing price of the Issuer's Class A Common Stock on August 14, 2026.

SEC source: 0001890925-26-000023 · wk-form4_1787088293.xml · nonDerivative · entry 1

McDonough Claire · CIK 0001890925 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 840,345

F1 · shares: 38,640 shares of Class A Common Stock were withheld by the Company for the purposes of satisfying tax withholding obligations in connection with the vesting of 75,940 Restricted Stock Units on August 15, 2026.

F2 · price: The closing price of the Issuer's Class A Common Stock on August 14, 2026.

SEC source: 0001607879-26-000006 · wk-form4_1784752629.xml · nonDerivative · entry 1

Krafcik John · CIK 0001607879 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 79,393

F1 · shares: Represents an award of 1,192 restricted stock units ("RSUs"), which vested on July 20, 2026. The RSUs settled in shares of the Issuer's Class A Common Stock upon vesting.

SEC source: 0002066491-26-000011 · wk-form4_1784752694.xml · nonDerivative · entry 2

Gomez Aidan N. · CIK 0002066491 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 63,177

F2 · shares: 343 shares of Class A Common Stock were withheld by the Company for the purposes of satisfying tax withholding obligations in connection with the vesting of 769 RSUs on July 20, 2026.

F3 · price: The closing price of the Company's Class A Common Stock on July 17, 2026.

SEC source: 0002066491-26-000011 · wk-form4_1784752694.xml · nonDerivative · entry 1

Gomez Aidan N. · CIK 0002066491 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 63,520

F1 · shares: Represents an award of 769 restricted stock units ("RSUs"), which vested on July 20, 2026.

SEC source: 0001891037-26-000009 · wk-form4_1784752600.xml · nonDerivative · entry 1

Krawiec Peter · CIK 0001891037 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,558

F1 · shares: Represents an award of 884 restricted stock units ("RSUs"), which vested on July 20, 2026. The RSUs settled in shares of the Issuer's Class A Common Stock upon vesting.

SEC source: 0001891751-26-000008 · wk-form4_1784752563.xml · nonDerivative · entry 1

Schwartz Sanford Harold · CIK 0001891751 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 213,002

F1 · shares: Represents an award of 1,192 restricted stock units ("RSUs"), which vested on July 20, 2026. The Reporting Person has elected to defer the issuance of the shares of the Issuer's Class A Common Stock underlying the RSUs until the Reporting Person's termination of service as a director of the Issuer. The RSUs will settle in shares of the Issuer's Class A Common Stock upon such termination of service.

SEC source: 0001561290-26-000009 · wk-form4_1783558402.xml · nonDerivative · entry 1

Boone Karen · CIK 0001561290 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · See footnote

Disclosed balance after: 110,000

F1 · kind: The sale reported in this transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2025, as described in the Issuer's Annual Report on Form 10-K for the fiscal year ended December 31, 2025, filed with the Securities and Exchange Commission on February 12, 2026. The sale was made under an exception to the restrictions under the Lock-Up Agreement (as defined in Footnote 2) for an "Existing Trading Plan" (as defined therein).

F2 · balance_after: The shares of Class A Common Stock beneficially owned by the Reporting Person following the transactions reported on this Form 4 are subject to a lock-up agreement (the "Lock-Up Agreement") between the Reporting Person and Goldman Sachs & Co. LLC , dated July 6, 2026 (the "Lock-up Date") pursuant to which the shares of Class A Common Stock reported herein cannot be sold for 45 days following the date of the final Prospectus (as defined in the Lock-Up Agreement), subject to certain enumerated exceptions in the Lock-Up Agreement.

F3 · ownership.nature: By The Boone Family Trust dated August 6, 2015.

SEC source: 0001607879-26-000004 · wk-form4_1782247028.xml · nonDerivative · entry 1

Krafcik John · CIK 0001607879 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 78,201

F1 · shares: Represents an award of 17,445 restricted stock units ("RSUs") which will vest on the first anniversary of the grant date.

SEC source: 0001189130-26-000007 · wk-form4_1782247057.xml · nonDerivative · entry 1

FLATLEY JAY T · CIK 0001189130 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 179,515

F1 · shares: Represents an award of 17,445 restricted stock units ("RSUs") which will vest on the first anniversary of the grant date.

SEC source: 0001561290-26-000007 · wk-form4_1782247085.xml · nonDerivative · entry 1

Boone Karen · CIK 0001561290 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 115,794

F1 · shares: Represents an award of 17,445 restricted stock units ("RSUs") which will vest on the first anniversary of the grant date.

SEC source: 0001891751-26-000006 · wk-form4_1782246904.xml · nonDerivative · entry 1

Schwartz Sanford Harold · CIK 0001891751 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 211,810

F1 · shares: Represents an award of 17,445 restricted stock units ("RSUs") which will vest on the first anniversary of the grant date. The Reporting Person has elected to defer the issuance of the shares of the Issuer's Class A Common Stock underlying the RSUs until the Reporting Person's termination of service as a director of the Issuer. The RSUs will settle in shares of the Issuer's Class A Common Stock upon such termination of service.

SEC source: 0002066491-26-000009 · wk-form4_1782246842.xml · nonDerivative · entry 2

Gomez Aidan N. · CIK 0002066491 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,751

F2 · shares: Represents an award of 17,445 RSUs which will vest on the first anniversary of the grant date.

SEC source: 0001891037-26-000007 · wk-form4_1782246975.xml · nonDerivative · entry 1

Krawiec Peter · CIK 0001891037 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,674

F1 · shares: Represents an award of 17,445 restricted stock units ("RSUs") which will vest on the first anniversary of the grant date.

SEC source: 0002066491-26-000009 · wk-form4_1782246842.xml · nonDerivative · entry 1

Gomez Aidan N. · CIK 0002066491 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,306

F1 · shares: 8,926 shares of Class A Common Stock were withheld by the Company for the purposes of satisfying tax withholding obligations in connection with the vesting of 16,812 restricted stock units ("RSUs") on June 18, 2026.

SEC source: 0001890925-26-000019 · wk-form4_1780689760.xml · nonDerivative · entry 1

McDonough Claire · CIK 0001890925 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 878,985

F1 · kind: The sale reported in this transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 2, 2025, as described in the Issuer's Quarterly Report on Form 10-Q for the three months ended September 30, 2025, filed with the Securities and Exchange Commission on November 4, 2025.

SEC source: 0001890925-26-000017 · wk-form4_1780431637.xml · nonDerivative · entry 1

McDonough Claire · CIK 0001890925 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 887,007

F1 · kind: The sale reported in this transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 2, 2025, as described in the Issuer's Quarterly Report on Form 10-Q for the three months ended September 30, 2025, filed with the Securities and Exchange Commission on November 4, 2025.

SEC source: 0001891517-26-000025 · wk-form4_1780086784.xml · nonDerivative · entry 1

Scaringe Robert J · CIK 0001891517 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 922,286

F1 · kind: The sale reported in this transaction was effected automatically pursuant to a previously disclosed Rule 10b5-1 trading plan adopted on March 14, 2025 and amended on June 11, 2025, as disclosed in the Issuer's Quarterly Report on Form 10-Q for each such quarter.

SEC source: 0001890925-26-000014 · wk-form4_1779480446.xml · nonDerivative · entry 1

McDonough Claire · CIK 0001890925 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 895,030

F1 · kind: The sale reported in this transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 2, 2025, as described in the Issuer's Quarterly Report on Form 10-Q for the three months ended September 30, 2025, filed with the Securities and Exchange Commission on November 4, 2025.

SEC source: 0001943929-26-000012 · wk-form4_1779480402.xml · nonDerivative · entry 1

Venkataratnam Sreela · CIK 0001943929 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 584,896

F1 · security: The Reporting Person is voluntarily reporting the acquisition of shares of the Issuer's Class A Common Stock pursuant to the Rivian Automotive, Inc. 2021 Employee Stock Purchase Plan (the "ESPP") for the purchase period of November 21, 2025 through May 20, 2026 (the "Offering Period"). The acquisition of those 2,756 shares of Class A Common Stock was also exempt pursuant to Rule 16b-3(c).

F2 · kind: The Offering Period ended on May 20, 2026, and the shares were acquired on the last business day of the Offering Period.

F3 · price: In accordance with the ESPP, these shares were purchased at a price that represented 85% of the closing price of the Issuer's Class A Common Stock on May 20, 2026.

SEC source: 0001262742-26-000010 · wk-form4_1779480424.xml · nonDerivative · entry 1

CALLAHAN MICHAEL JOHN · CIK 0001262742 · Chief Administrative Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,073,858

F1 · security: The Reporting Person is voluntarily reporting the acquisition of shares of the Issuer's Class A Common Stock pursuant to the Rivian Automotive, Inc. 2021 Employee Stock Purchase Plan (the "ESPP") for the purchase period of November 21, 2025 through May 20, 2026 (the "Offering Period"). The acquisition of those 1,682 shares of Class A Common Stock was also exempt pursuant to Rule 16b-3(c).

F2 · date: The Offering Period ended on May 20, 2026, and the shares were acquired on the last business day of the Offering Period.

F3 · price: In accordance with the ESPP, these shares were purchased at a price that represented 85% of the closing price of the Issuer's Class A Common Stock on May 20, 2026.

SEC source: 0001890925-26-000012 · wk-form4_1779232991.xml · nonDerivative · entry 2

McDonough Claire · CIK 0001890925 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 902,630

F3 · kind: The sale reported in this transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 2, 2025, as described in the Issuer's Quarterly Report on Form 10-Q for the three months ended September 30, 2025, filed with the Securities and Exchange Commission on November 4, 2025.

F4 · price: The price reported is a weighted average sale price. The shares were sold in multiple transactions at prices ranging from $13.24 to $13.78, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001943929-26-000010 · wk-form4_1779232947.xml · nonDerivative · entry 1

Venkataratnam Sreela · CIK 0001943929 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 582,140

F1 · shares: 17,486 shares of Class A Common Stock were withheld by the Company for the purposes of satisfying tax withholding obligations in connection with the vesting of 39,889 Restricted Stock Units on May 15, 2026.

F2 · price: The closing price of the Issuer's Class A Common Stock on May 14, 2026.

SEC source: 0001262742-26-000008 · wk-form4_1779232967.xml · nonDerivative · entry 1

CALLAHAN MICHAEL JOHN · CIK 0001262742 · Chief Administrative Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,072,176

F1 · shares: 42,082 shares of Class A Common Stock were withheld by the Company for the purposes of satisfying tax withholding obligations in connection with the vesting of 82,703 Restricted Stock Units on May 15, 2026.

F2 · price: The closing price of the Issuer's Class A Common Stock on May 14, 2026.

SEC source: 0002066491-26-000007 · wk-form4_1779233069.xml · nonDerivative · entry 2

Gomez Aidan N. · CIK 0002066491 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,232

F1 · shares: 3,752 shares of Class A Common Stock were withheld by the Company for the purposes of satisfying tax withholding obligations in connection with the vesting of 6,961 Restricted Stock Units on May 15, 2026.

F2 · price: The closing price of the Company's Class A Common Stock on May 14, 2026.

SEC source: 0002066491-26-000007 · wk-form4_1779233069.xml · nonDerivative · entry 1

Gomez Aidan N. · CIK 0002066491 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 57,984

SEC source: 0001891517-26-000023 · wk-form4_1779233050.xml · nonDerivative · entry 1

Scaringe Robert J · CIK 0001891517 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 957,104

F1 · shares: 44,034 shares of Class A Common Stock were withheld by the Company for the purposes of satisfying tax withholding obligations in connection with the vesting of 86,540 Restricted Stock Units on May 15, 2026.

F2 · price: The closing price of the Issuer's Class A Common Stock on May 14, 2026.

SEC source: 0001890925-26-000012 · wk-form4_1779232991.xml · nonDerivative · entry 1

McDonough Claire · CIK 0001890925 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 908,174

F1 · shares: 38,640 shares of Class A Common Stock were withheld by the Company for the purposes of satisfying tax withholding obligations in connection with the vesting of 75,939 Restricted Stock Units on May 15, 2026.

F2 · price: The closing price of the Issuer's Class A Common Stock on May 14, 2026.

SEC source: 0001104659-26-054722 · tm2613313-1_4seq1.xml · nonDerivative · entry 1

VOLKSWAGEN AG · CIK 0001111708 · 10% owner

Volkswagen US-Holding, Inc. · CIK 0002076446 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote.

Disclosed balance after: 209,769,645

F1 · kind: The shares of Class A common stock reported herein are held of record by Volkswagen US-Holding, Inc. (formerly known as Volkswagen International America Inc.), which is a wholly-owned subsidiary of Volkswagen AG. Each of Volkswagen US-Holding, Inc. and Volkswagen AG may be deemed to share beneficial ownership of the securities reported herein.

F2 · kind: The shares of Class A common stock reported herein were acquired in a private placement pursuant to the terms of the Investment Agreement, dated as of November 13, 2024, as amended on April 17, 2025, by and among Rivian Automotive, Inc., Volkswagen AG and Volkswagen International America Inc.

F1 · ownership.direct: The shares of Class A common stock reported herein are held of record by Volkswagen US-Holding, Inc. (formerly known as Volkswagen International America Inc.), which is a wholly-owned subsidiary of Volkswagen AG. Each of Volkswagen US-Holding, Inc. and Volkswagen AG may be deemed to share beneficial ownership of the securities reported herein.

F1 · ownership.nature: The shares of Class A common stock reported herein are held of record by Volkswagen US-Holding, Inc. (formerly known as Volkswagen International America Inc.), which is a wholly-owned subsidiary of Volkswagen AG. Each of Volkswagen US-Holding, Inc. and Volkswagen AG may be deemed to share beneficial ownership of the securities reported herein.

SEC source: 0001890925-26-000010 · wk-form4_1777063417.xml · nonDerivative · entry 1

McDonough Claire · CIK 0001890925 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 946,814

F1 · kind: The sale reported in this transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 2, 2025, as described in the Issuer's Quarterly Report on Form 10-Q for the three months ended September 30, 2025, filed with the Securities and Exchange Commission on November 4, 2025.

SEC source: 0001607879-26-000002 · wk-form4_1776890555.xml · nonDerivative · entry 1

Krafcik John · CIK 0001607879 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,756

F1 · shares: Represents an award of 1,255 restricted stock units ("RSUs"), which vested on April 20, 2026. The RSUs settled in shares of the Issuer's Class A Common Stock upon vesting.

SEC source: 0002066491-26-000005 · wk-form4_1776890579.xml · nonDerivative · entry 2

Gomez Aidan N. · CIK 0002066491 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,984

F2 · shares: 406 shares of Class A Common Stock were withheld by the Company for the purposes of satisfying tax withholding obligations in connection with the vesting of 810 RSUs on January 20, 2026.

F3 · price: The closing price of the Company's Class A Common Stock on April 19, 2026.

SEC source: 0002066491-26-000005 · wk-form4_1776890579.xml · nonDerivative · entry 1

Gomez Aidan N. · CIK 0002066491 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,390

F1 · shares: Represents an award of 810 restricted stock units ("RSUs"), which vested on April 20, 2026.

SEC source: 0001891751-26-000004 · wk-form4_1776890533.xml · nonDerivative · entry 1

Schwartz Sanford Harold · CIK 0001891751 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 194,365

F1 · shares: Represents an award of 1,255 restricted stock units ("RSUs"), which vested on April 20, 2026. The Reporting Person has elected to defer the issuance of the shares of the Issuer's Class A Common Stock underlying the RSUs until the Reporting Person's termination of service as a director of the Issuer. The RSUs will settle in shares of the Issuer's Class A Common Stock upon such termination of service.

SEC source: 0001891037-26-000005 · wk-form4_1776890517.xml · nonDerivative · entry 1

Krawiec Peter · CIK 0001891037 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,229

F1 · shares: Represents an award of 897 restricted stock units ("RSUs"), which vested on April 20, 2026. The RSUs settled in shares of the Issuer's Class A Common Stock upon vesting.

SEC source: 0001891517-26-000021 · wk-form4_1776372818.xml · nonDerivative · entry 1

Scaringe Robert J · CIK 0001891517 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,001,138

F1 · kind: The sale reported in this transaction was effected automatically pursuant to a previously disclosed Rule 10b5-1 trading plan adopted on March 14, 2025 and amended on June 11, 2025, as disclosed in the Issuer's Quarterly Report on Form 10-Q for each such quarter.

F2 · price: The price reported is a weighted average sale price. The shares were sold in multiple transactions at prices ranging from $15.815 to $16.66, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001891517-26-000018 · wk-form4_1775163142.xml · nonDerivative · entry 1

Scaringe Robert J · CIK 0001891517 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,022,584

F1 · kind: The sale reported in this transaction was effected automatically pursuant to a previously disclosed Rule 10b5-1 trading plan adopted on March 14, 2025 and amended on June 11, 2025, as disclosed in the Issuer's Quarterly Report on Form 10-Q for each such quarter.

SEC source: 0001943929-26-000008 · wk-form4_1774384805.xml · nonDerivative · entry 1

Venkataratnam Sreela · CIK 0001943929 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 599,626

F1 · shares: Represents an award of 115,588 restricted stock units ("RSUs") which will vest on each of the next sixteen quarterly anniversaries after February 15, 2026. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock and has no expiration date.

SEC source: 0001262742-26-000006 · wk-form4_1774384826.xml · derivative · entry 2

CALLAHAN MICHAEL JOHN · CIK 0001262742 · Chief Administrative Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 528,402

Underlying: Class A Common Stock · 528,402 shares

Expires 2036-03-20

F2 · derivative.exercise_date: The stock option will vest annually as to 25% of the underlying shares over the next four anniversaries of March 20, 2026.

SEC source: 0001262742-26-000006 · wk-form4_1774384826.xml · nonDerivative · entry 1

CALLAHAN MICHAEL JOHN · CIK 0001262742 · Chief Administrative Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,114,258

F1 · shares: Represents an award of 264,201 restricted stock units ("RSUs") which will vest on each of the next sixteen quarterly anniversaries after February 15, 2026. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock and has no expiration date.

SEC source: 0001890925-26-000008 · wk-form4_1774384845.xml · derivative · entry 2

McDonough Claire · CIK 0001890925 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 528,402

Underlying: Class A Common Stock · 528,402 shares

Expires 2036-03-20

F2 · derivative.exercise_date: The stock option will vest annually as to 25% of the underlying shares over the next four anniversaries of March 20, 2026.

SEC source: 0001890925-26-000008 · wk-form4_1774384845.xml · nonDerivative · entry 1

McDonough Claire · CIK 0001890925 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 957,059

F1 · shares: Represents an award of 264,201 restricted stock units ("RSUs") which will vest on each of the next sixteen quarterly anniversaries after February 15, 2026. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock and has no expiration date.

SEC source: 0001891517-26-000015 · wk-form4_1773952319.xml · nonDerivative · entry 1

Scaringe Robert J · CIK 0001891517 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,042,848

F1 · kind: The sale reported in this transaction was effected automatically pursuant to a previously disclosed Rule 10b5-1 trading plan adopted on March 14, 2025 and amended on June 11, 2025, as disclosed in the Issuer's Quarterly Report on Form 10-Q for each such quarter.

F2 · price: The price reported is a weighted average sale price. The shares were sold in multiple transactions at prices ranging from $15.30 to $15.85, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001943929-26-000005 · wk-form4_1772748582.xml · nonDerivative · entry 2

Venkataratnam Sreela · CIK 0001943929 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 484,038

F2 · shares: 3,535 shares of Class A Common Stock were withheld by the Company for the purposes of satisfying tax withholding obligations in connection with such RSUs vesting.

F3 · price: The closing price of the Company's Class A Common Stock on March 3, 2026.