X0609 4 2026-08-06 0001736297 Astera Labs, Inc. ALAB 0001484394 Dyckerhoff Stefan A false 755 PAGE MILL ROAD, SUITE A-200 PALO ALTO CA 94304-1005 true false false false 1 Common Stock 2026-08-06 4 S 0 1029 309.289 D 56437 D Common Stock 2026-08-06 4 S 0 2447 309.289 D 308952 I By Trust Common Stock 2026-08-06 4 S 0 194 309.289 D 4437 I By Limited Partnership (TF) Common Stock 2026-08-06 4 S 0 269 311.372 D 56168 D Common Stock 2026-08-06 4 S 0 640 311.372 D 308312 I By Trust Common Stock 2026-08-06 4 S 0 51 311.372 D 4386 I By Limited Partnership (TF) Common Stock 2026-08-06 4 S 0 2207 313.074 D 53961 D Common Stock 2026-08-06 4 S 0 5246 313.074 D 303066 I By Trust Common Stock 2026-08-06 4 S 0 416 313.074 D 3970 I By Limited Partnership (TF) Common Stock 3767 I By DIFT-2 Common Stock 3765 I By DIFT-AMD Common Stock 3765 I By DIFT-BAD Common Stock 3765 I By DIFT-SHD Common Stock 3765 I By DIFT-IND Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $308.67 to $309.34 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. Includes shares to be issued in connection with the vesting of one or more restricted stock units. The Reporting Person shares pecuniary interest in these shares with other parties pursuant to contractual relationships. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest in these shares. Shares held by a trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein. Shares held by a limited partnership of which the Reporting Person is a trustee of a trust which is the general partner. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $311.20 to $312.02 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $312.41 to $313.211 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. Shares held by an irrevocable trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein. /s/ Kanwalpreet S. Kalra, Attorney-in-Fact 2026-08-10