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: -$16,792,742
SEC form: 4
Accepted by SEC: 06 Jul 2026, 21:32:50 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).
29 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 06 Jul 2026, 21:32.

Change

Previous filing in this sequence was filed on 03 Apr 2026.
Current net transaction value: -$16,792,742.

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: $699,310
Shares: -1,520
Change %: -0.12%
Price: $460.07
Shares after: 1,286,004
Date: 01 Jul 2026
Ownership: By Alba Trust
Footnotes: F1, F2, F3

ALAB transaction

Common Stock

Sale

Transaction value: $982,470
Shares: -2,129
Change %: -0.17%
Price: $461.47
Shares after: 1,283,875
Date: 01 Jul 2026
Ownership: By Alba Trust
Footnotes: F1, F3, F4

ALAB transaction

Common Stock

Sale

Transaction value: $1,323,507
Shares: -2,862
Change %: -0.22%
Price: $462.44
Shares after: 1,281,013
Date: 01 Jul 2026
Ownership: By Alba Trust
Footnotes: F1, F3, F5

ALAB transaction

Common Stock

Sale

Transaction value: $1,045,325
Shares: -2,256
Change %: -0.18%
Price: $463.35
Shares after: 1,278,757
Date: 01 Jul 2026
Ownership: By Alba Trust
Footnotes: F1, F3, F6

ALAB transaction

Common Stock

Sale

Transaction value: $647,447
Shares: -1,394
Change %: -0.11%
Price: $464.45
Shares after: 1,277,363
Date: 01 Jul 2026
Ownership: By Alba Trust
Footnotes: F1, F3, F7

ALAB transaction

Common Stock

Sale

Transaction value: $159,886
Shares: -343
Change %: -0.03%
Price: $466.14
Shares after: 1,277,020
Date: 01 Jul 2026
Ownership: By Alba Trust
Footnotes: F1, F3, F8

ALAB transaction

Common Stock

Sale

Transaction value: $464,561
Shares: -995
Change %: -0.08%
Price: $466.90
Shares after: 1,276,025
Date: 01 Jul 2026
Ownership: By Alba Trust
Footnotes: F1, F3, F9

ALAB transaction

Common Stock

Sale

Transaction value: $714,629
Shares: -1,527
Change %: -0.12%
Price: $468.00
Shares after: 1,274,498
Date: 01 Jul 2026
Ownership: By Alba Trust
Footnotes: F1, F3, F10

ALAB transaction

Common Stock

Sale

Transaction value: $552,438
Shares: -1,286
Change %: -0.4%
Price: $429.58
Shares after: 318,577
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F11, F12

ALAB transaction

Common Stock

Sale

Transaction value: $2,856,143
Shares: -6,630
Change %: -2.1%
Price: $430.79
Shares after: 311,947
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F12, F13

ALAB transaction

Common Stock

Sale

Transaction value: $331,952
Shares: -767
Change %: -0.25%
Price: $432.79
Shares after: 311,180
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F12, F14

ALAB transaction

Common Stock

Sale

Transaction value: $149,966
Shares: -346
Change %: -0.11%
Price: $433.43
Shares after: 310,834
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F12, F15

ALAB transaction

Common Stock

Sale

Transaction value: $217,825
Shares: -501
Change %: -0.16%
Price: $434.78
Shares after: 310,333
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F12, F16

ALAB transaction

Common Stock

Sale

Transaction value: $203,498
Shares: -467
Change %: -0.15%
Price: $435.76
Shares after: 309,866
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F12, F17

ALAB transaction

Common Stock

Sale

Transaction value: $351,203
Shares: -804
Change %: -0.26%
Price: $436.82
Shares after: 309,062
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F12, F18

ALAB transaction

Common Stock

Sale

Transaction value: $205,390
Shares: -469
Change %: -0.15%
Price: $437.93
Shares after: 308,593
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F12, F19

ALAB transaction

Common Stock

Sale

Transaction value: $285,212
Shares: -650
Change %: -0.21%
Price: $438.79
Shares after: 307,943
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F12, F20

ALAB transaction

Common Stock

Sale

Transaction value: $418,930
Shares: -952
Change %: -0.31%
Price: $440.05
Shares after: 306,991
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F12, F21

ALAB transaction

Common Stock

Sale

Transaction value: $669,662
Shares: -1,519
Change %: -0.49%
Price: $440.86
Shares after: 305,472
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F12, F22

ALAB transaction

Common Stock

Sale

Transaction value: $434,726
Shares: -984
Change %: -0.32%
Price: $441.79
Shares after: 304,488
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F12, F23

ALAB transaction

Common Stock

Sale

Transaction value: $484,944
Shares: -1,095
Change %: -0.36%
Price: $442.87
Shares after: 303,393
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F12, F24

ALAB transaction

Common Stock

Sale

Transaction value: $531,258
Shares: -1,197
Change %: -0.39%
Price: $443.82
Shares after: 302,196
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F12, F25

ALAB transaction

Common Stock

Sale

Transaction value: $591,728
Shares: -1,330
Change %: -0.44%
Price: $444.91
Shares after: 300,866
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F12, F26

ALAB transaction

Common Stock

Sale

Transaction value: $422,667
Shares: -948
Change %: -0.32%
Price: $445.85
Shares after: 299,918
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F12, F27

ALAB transaction

Common Stock

Sale

Transaction value: $401,328
Shares: -898
Change %: -0.3%
Price: $446.91
Shares after: 299,020
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F12, F28

ALAB transaction

Common Stock

Sale

Transaction value: $395,461
Shares: -883
Change %: -0.3%
Price: $447.86
Shares after: 298,137
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F12, F29

ALAB transaction

Common Stock

Sale

Transaction value: $663,846
Shares: -1,479
Change %: -0.5%
Price: $448.85
Shares after: 296,658
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F12, F30

ALAB transaction

Common Stock

Sale

Transaction value: $256,436
Shares: -570
Change %: -0.19%
Price: $449.89
Shares after: 296,088
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F12, F31

ALAB transaction

Common Stock

Sale

Transaction value: $330,993
Shares: -734
Change %: -0.25%
Price: $450.94
Shares after: 295,354
Date: 01 Jul 2026
Ownership: By Casa Alameda 2007, LLC
Footnotes: F1, F12, F32

^* 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 32 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 $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 F3

These shares are owned directly by Manuel Alba-Marquez in trust for Alba 2003 Living Trust (the "Alba Trust"), of which the Reporting Person and his spouse are co-trustees. 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 $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 F5

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 F6

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 F7

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 F8

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 F9

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 F10

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.

Footnote F11

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $429.1100 to $430.0700, 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

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 F13

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $430.1100 to $430.9300, 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 $432.1800 to $433.1400, 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 $433.2300 to $433.5600, 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 $434.2800 to $435.2500, 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 $435.3200 to $436.3100, 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 $436.3300 to $437.3100, 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 F19

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $437.3300 to $438.3200, 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 F20

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $438.3600 to $439.3200, 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 F21

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $439.3600 to $440.3500, 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 F22

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $440.3600 to $441.3500, 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 F23

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $441.3600 to $442.3500, 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 F24

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $442.3600 to $443.3500, 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 F25

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $443.3600 to $444.3500, 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 F26

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $444.3600 to $445.3500, 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 F27

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $445.3600 to $446.3500, 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 F28

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $446.3600 to $447.3500, 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 F29

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $447.3600 to $448.3500, 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 F30

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $448.3600 to $449.3300, 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 F31

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $449.4200 to $450.4000, 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 F32

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $450.4600 to $451.4500, 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.

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 2 of 3.