SEC Form 4 · accession 0001134727-26-000010

Astera Labs, Inc. · ALAB

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Manuel Alba

Director

Period of report

Jul 1, 2026

Accepted (ET)

Jul 6, 2026 · 9:38 pm EDT

Rule 10b5-1 plan

yes — trade under a plan

Issuer CIK

0001736297

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F2,F3	Jul 1, 2026	S	971	$451.9579	D	294,383	I	By Casa Alameda 2007, LLC
Common Stock^F4,F3	Jul 1, 2026	S	265	$453.1203	D	294,118	I	By Casa Alameda 2007, LLC
Common Stock^F5,F3	Jul 1, 2026	S	436	$453.8275	D	293,682	I	By Casa Alameda 2007, LLC
Common Stock^F6,F3	Jul 1, 2026	S	720	$454.9213	D	292,962	I	By Casa Alameda 2007, LLC
Common Stock^F7,F3	Jul 1, 2026	S	637	$455.8887	D	292,325	I	By Casa Alameda 2007, LLC
Common Stock^F8,F3	Jul 1, 2026	S	747	$456.9733	D	291,578	I	By Casa Alameda 2007, LLC
Common Stock^F9,F3	Jul 1, 2026	S	1,006	$457.9983	D	290,572	I	By Casa Alameda 2007, LLC
Common Stock^F10,F3	Jul 1, 2026	S	845	$459.0184	D	289,727	I	By Casa Alameda 2007, LLC
Common Stock^F11,F3	Jul 1, 2026	S	334	$460.0732	D	289,393	I	By Casa Alameda 2007, LLC
Common Stock^F12,F3	Jul 1, 2026	S	468	$461.4695	D	288,925	I	By Casa Alameda 2007, LLC
Common Stock^F13,F3	Jul 1, 2026	S	629	$462.4406	D	288,296	I	By Casa Alameda 2007, LLC
Common Stock^F14,F3	Jul 1, 2026	S	496	$463.3543	D	287,800	I	By Casa Alameda 2007, LLC
Common Stock^F15,F3	Jul 1, 2026	S	307	$464.4516	D	287,493	I	By Casa Alameda 2007, LLC
Common Stock^F16,F3	Jul 1, 2026	S	75	$466.1309	D	287,418	I	By Casa Alameda 2007, LLC
Common Stock^F17,F3	Jul 1, 2026	S	219	$466.8959	D	287,199	I	By Casa Alameda 2007, LLC
Common Stock^F18,F3	Jul 1, 2026	S	336	$467.9949	D	286,863	I	By Casa Alameda 2007, LLC
Common Stock	holding	—	—		—	5,000	I	By spouse
Common Stock	holding	—	—		—	2,351	D

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1The 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.
F10The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $458.5100 to $459.4400, 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.
F11The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $459.6000 to $460.4400, 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.
F12The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $460.9300 to $461.8600, 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.
F13The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $461.9300 to $462.8800, 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.
F14The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $462.9600 to $463.9400, 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.
F15The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $463.9600 to $464.7800, 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.
F16The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $465.7000 to $466.5100, 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.
F17The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $466.7000 to $467.1000, 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.
F18The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $467.9100 to $468.0000, 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.
F2The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $451.4600 to $452.4500, 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.
F3These shares are owned directly by Casa Alameda 2007, LLC, of which the Reporting Person is a manager. The Reporting Person disclaims beneficial ownership of these securities, except to the extent, if any, of his pecuniary interest therein, and the filing of this Form 4 is not an admission that the Reporting Person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.
F4The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $452.4600 to $453.4400, 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.
F5The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $453.4900 to $454.4850, 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.
F6The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $454.5000 to $455.4700, 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.
F7The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $455.5000 to $456.4700, 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.
F8The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $456.5100 to $457.4600, 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.
F9The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $457.5100 to $458.5000, 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.

Remarks

This Form 4 is being filed in three parts due to the limitations of the U.S. Securities and Exchange Commission EDGAR filing system. Part 3 of 3.