Manuel Alba - 01 Jul 2026 Form 4 Insider Report for Astera Labs, Inc. (ALAB)

Reporting relationship: Director
Issuer ticker: ALAB
Reported as of: 01 Jul 2026
Net transaction value: -$3,892,091
SEC form: 4
Accepted by SEC: 06 Jul 2026, 21:38:03 UTC
Prior SEC filing: 03 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ Philip Mazzara, Attorney-in-Fact

Key filing fact

Manuel Alba filed Form 4 for Astera Labs, Inc. (ALAB) on 06 Jul 2026.

Key facts

This page summarizes Manuel Alba's Form 4 filing for Astera Labs, Inc. (ALAB).
16 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 06 Jul 2026, 21:38.

Change

Previous filing in this sequence was filed on 03 Apr 2026.
Current net transaction value: -$3,892,091.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001134727 Primary reporting owner

ALBA MANUEL

Relationship: Director
Address: C/O ASTERA LABS, INC., 2345 NORTH FIRST STREET, SAN JOSE
Signature: /s/ Philip Mazzara, Attorney-in-Fact
Signature date: 06 Jul 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ALAB transaction

Common Stock

Sale

Transaction value: $438,851
Shares: -971
Change %: -0.33%
Price: $451.96
Shares after: 294,383
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F2, F3

ALAB transaction

Common Stock

Sale

Transaction value: $120,077
Shares: -265
Change %: -0.09%
Price: $453.12
Shares after: 294,118
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F3, F4

ALAB transaction

Common Stock

Sale

Transaction value: $197,869
Shares: -436
Change %: -0.15%
Price: $453.83
Shares after: 293,682
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F3, F5

ALAB transaction

Common Stock

Sale

Transaction value: $327,543
Shares: -720
Change %: -0.25%
Price: $454.92
Shares after: 292,962
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F3, F6

ALAB transaction

Common Stock

Sale

Transaction value: $290,401
Shares: -637
Change %: -0.22%
Price: $455.89
Shares after: 292,325
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F3, F7

ALAB transaction

Common Stock

Sale

Transaction value: $341,359
Shares: -747
Change %: -0.26%
Price: $456.97
Shares after: 291,578
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F3, F8

ALAB transaction

Common Stock

Sale

Transaction value: $460,746
Shares: -1,006
Change %: -0.35%
Price: $458.00
Shares after: 290,572
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F3, F9

ALAB transaction

Common Stock

Sale

Transaction value: $387,871
Shares: -845
Change %: -0.29%
Price: $459.02
Shares after: 289,727
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F3, F10

ALAB transaction

Common Stock

Sale

Transaction value: $153,664
Shares: -334
Change %: -0.12%
Price: $460.07
Shares after: 289,393
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F3, F11

ALAB transaction

Common Stock

Sale

Transaction value: $215,968
Shares: -468
Change %: -0.16%
Price: $461.47
Shares after: 288,925
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F3, F12

ALAB transaction

Common Stock

Sale

Transaction value: $290,875
Shares: -629
Change %: -0.22%
Price: $462.44
Shares after: 288,296
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F3, F13

ALAB transaction

Common Stock

Sale

Transaction value: $229,824
Shares: -496
Change %: -0.17%
Price: $463.35
Shares after: 287,800
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F3, F14

ALAB transaction

Common Stock

Sale

Transaction value: $142,587
Shares: -307
Change %: -0.11%
Price: $464.45
Shares after: 287,493
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F3, F15

ALAB transaction

Common Stock

Sale

Transaction value: $34,960
Shares: -75
Change %: -0.03%
Price: $466.13
Shares after: 287,418
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F3, F16

ALAB transaction

Common Stock

Sale

Transaction value: $102,250
Shares: -219
Change %: -0.08%
Price: $466.90
Shares after: 287,199
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F3, F17

ALAB transaction

Common Stock

Sale

Transaction value: $157,246
Shares: -336
Change %: -0.12%
Price: $467.99
Shares after: 286,863
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F3, F18

ALAB holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 5,000
Date: 01 Jul 2026
Ownership: By spouse

ALAB holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 2,351
Date: 01 Jul 2026
Ownership: Direct

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 18 footnotes

Footnote 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.

Footnote F2

The 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.

Footnote F3

These 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.

Footnote F4

The 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.

Footnote F5

The 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.

Footnote F6

The 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.

Footnote F7

The 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.

Footnote F8

The 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.

Footnote F9

The 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.

Footnote F10

The 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.

Footnote F11

The 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.

Footnote F12

The 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.

Footnote F13

The 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.

Footnote F14

The 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.

Footnote F15

The 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.

Footnote F16

The 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.

Footnote F17

The 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.

Footnote F18

The 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.

SEC 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.