X0508 4 2025-12-15 0 0001874178 Rivian Automotive, Inc. / DE RIVN 0001891037 Krawiec Peter C/O RIVIAN AUTOMOTIVE, INC. IRVINE CA 92606 1 0 0 0 0 Class A Common Stock 2025-12-15 4 S 0 3655 19.4465 D 29122 I By Peter Krawiec 2025 GRAT Class A Common Stock 7674 D Class A Common Stock 32778 I By Erin G. Krawiec 2025 GRAT Class A Common Stock 34531 I By Erin G. Krawiec 2019 Trust The price reported is a weighted average sale price. The shares were sold in multiple transactions at prices ranging from $19.42 to $19.455, 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. /s/ Jamie Chung, Attorney-in-Fact 2025-12-17