144 0001277624 XXXXXXXX LIVE 0001736297 Astera Labs, Inc. 001-41979 2345 NORTH FIRST STREET SAN JOSE CA 95131 408-242-7319 LAZAR JACK R Director Common UBS Financial Services, Inc.

Eleven Madison Avenue 4th Floor New York NY 10010

7500 898471.25 170214503 03/05/2026 Nasdaq Common 11/15/2025 RSU Issuer N 5937 11/15/2025 NA Common 02/15/2026 RSU Issuer N 1563 02/26/2026 N/A Y 03/05/2026 12/02/2025 /s/ UBS Financial Services Inc, as attorney-in-fact for Jack R. Lazar