144 0001399546 XXXXXXXX LIVE 0001736297 Astera Labs, Inc. 001-41979 2345 NORTH FIRST STREET SAN JOSE CA 95131 408-242-7319 Tate Michael Truett Officer Common Stock Morgan Stanley Smith Barney LLC

Executive Financial Services 1 New York Plaza, 8th Floor New York NY 10004

11430 1649806.20 168903616 11/17/2025 NASDAQ Common Stock 11/15/2025 Vesting of restricted stock units Issuer N 11430 11/15/2025 N/A N Michael Truett Tate

c/o Astera Labs, Inc. 2345 North First Street San Jose CA 95131

Common Stock 08/18/2025 18861 3461184.01 Michael Truett Tate

c/o Astera Labs, Inc. 2345 North First Street San Jose CA 95131

Common Stock 08/19/2025 55785 0.00 Michael Truett Tate

c/o Astera Labs, Inc. 2345 North First Street San Jose CA 95131

Common Stock 09/11/2025 7000 0.00 Sale includes an amount necessary to satisfy tax withholding obligations in connection with the vesting and settlement of restricted stock units previously granted to Michael Truett Tate. 11/17/2025 /s/ Michael Truett Tate