Astera Labs, Inc. — Director's Dealing 2025

Oct 3, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Astera Labs, Inc. (ALAB)
CIK: 0001736297
Period of Report: 2025-10-01

Reporting Person: Mazzara Philip (General Counsel and Secretary)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-10-01	Common Stock	S	700	$187.2057	Disposed	160873	Direct
2025-10-01	Common Stock	S	800	$188.3688	Disposed	160073	Direct
2025-10-01	Common Stock	S	509	$189.8462	Disposed	159564	Direct
2025-10-01	Common Stock	S	1395	$190.9717	Disposed	158169	Direct
2025-10-01	Common Stock	S	1000	$192.2113	Disposed	157169	Direct
2025-10-01	Common Stock	S	2407	$193.0792	Disposed	154762	Direct
2025-10-01	Common Stock	S	2189	$194.0717	Disposed	152573	Direct
2025-10-01	Common Stock	S	900	$194.9489	Disposed	151673	Direct
2025-10-01	Common Stock	S	100	$195.66	Disposed	151573	Direct

Footnotes

F1: The sales reported in this Form 4 occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 29, 2025.

F2: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $186.6700 to $187.4900, inclusive. The Reporting Person undertakes
to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. 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.

F3: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $187.8600 to $188.8500, inclusive. The Reporting Person undertakes
to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. 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.

F4: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $189.3200 to $190.2900, inclusive. The Reporting Person undertakes
to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. 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.

F5: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $190.4900 to $191.4400, inclusive. The Reporting Person undertakes
to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. 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.

F6: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $191.6000 to $192.5900, inclusive. The Reporting Person undertakes
to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. 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.

F7: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $192.6100 to $193.5300, inclusive. The Reporting Person undertakes
to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. 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.

F8: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $193.6300 to $194.6100, inclusive. The Reporting Person undertakes
to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. 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.

F9: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $194.6300 to $195.4800, inclusive. The Reporting Person undertakes
to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. 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.