Rivian (RIVN)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-03-04 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Rivian Automotive, Inc. / DE (RIVN) CIK: 0001874178 --- Reporting Owner --- Name: CALLAHAN MICHAEL JOHN CIK: 0001262742 Role: Officer (Chief Administrative Officer) --- Non-Derivative Transactions --- [Transaction #1] Security: Class A Common Stock Date: 2026-03-04 | Code: A (Grant or award) Shares: +24,475 | Price: $0.00 Shares Owned After: 862,510 | Ownership: D (Direct) Footnotes: [F1] Represents an award of 24,475 restricted stock units ("RSUs") which vested on March 4, 2026. [Transaction #2] Security: Class A Common Stock Date: 2026-03-04 | Code: F (Payment of exercise/tax) Shares: -12,453 | Price: $15.10 Total Value: $188,040.30 Shares Owned After: 850,057 | Ownership: D (Direct) Footnotes: [F2] 12,453 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] The closing price of the Company's Class A Common Stock on March 3, 2026. --- Footnotes (Complete Index) --- F1: Represents an award of 24,475 restricted stock units ("RSUs") which vested on March 4, 2026. F2: 12,453 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: The closing price of the Company's Class A Common Stock on March 3, 2026. --- Signature --- /s/ /s/ Jamie Chung, Attorney-in-Fact (2026-03-05)