Philip Mazzara - Jul 24, 2025 Form 4 Insider Report for Astera Labs, Inc. (ALAB)

Role: General Counsel and Secretary
Signature: /s/ Philip Mazzara
Stock symbol: ALAB
Transactions as of: Jul 24, 2025
Transactions value $: $0
Form type: 4
Date filed: 7/29/2025, 09:30 PM
Previous filing: May 20, 2025
Next filing: Aug 20, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Mazzara Philip	General Counsel and Secretary	C/O ASTERA LABS, INC., 2901 TASMAN DRIVE, SUITE 205, SANTA CLARA	/s/ Philip Mazzara	2025-07-29	0001998163

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ALAB	Common Stock	Award	$0	+16.2K	+9.97%	$0.00	179K	Jul 24, 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	These shares represent an award of restricted stock units ("RSUs") granted on July 24, 2025 under the Astera Labs, Inc. 2024 Stock Option and Incentive Plan. Such award provides that the RSUs shall vest as to 25% on August 15, 2026 and the remaining RSUs shall vest in 12 equal quarterly installments thereafter. Each RSU represents a contingent right to receive one share of the Issuer's Common Stock.

Content

These shares represent an award of restricted stock units ("RSUs") granted on July 24, 2025 under the Astera Labs, Inc. 2024 Stock Option and Incentive Plan. Such award provides that the RSUs shall vest as to 25% on August 15, 2026 and the remaining RSUs shall vest in 12 equal quarterly installments thereafter. Each RSU represents a contingent right to receive one share of the Issuer's Common Stock.