Bethany Mayer - 24 Jun 2026 Form 4 Insider Report for Astera Labs, Inc. (ALAB)

Reporting relationship: Director
Issuer ticker: ALAB
Reported as of: 24 Jun 2026
Net transaction value: -$270,999
SEC form: 4
Accepted by SEC: 26 Jun 2026, 16:35:16 UTC
Prior SEC filing: 08 Jun 2026
Next SEC filing: 29 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Philip Mazzara, Attorney-in-Fact

Key filing fact

Bethany Mayer filed Form 4 for Astera Labs, Inc. (ALAB) on 26 Jun 2026.

Key facts

This page summarizes Bethany Mayer's Form 4 filing for Astera Labs, Inc. (ALAB).
6 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 26 Jun 2026, 16:35.

Change

Previous filing in this sequence was filed on 08 Jun 2026.
Current net transaction value: -$270,999.

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 0001405693 Primary reporting owner

Mayer Bethany

Relationship: Director
Address: C/O ASTERA LABS, INC., 2345 NORTH FIRST STREET, SAN JOSE
Signature: /s/ Philip Mazzara, Attorney-in-Fact
Signature date: 26 Jun 2026

Reported non-derivative transactions

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

ALAB transaction

Common Stock

Sale

Transaction value: $38,736
Shares: -99
Change %: -1.6%
Price: $391.27
Shares after: 6,137
Date: 24 Jun 2026
Ownership: Direct
Footnotes: F1, F2

ALAB transaction

Common Stock

Sale

Transaction value: $75,786
Shares: -193
Change %: -3.1%
Price: $392.67
Shares after: 5,944
Date: 24 Jun 2026
Ownership: Direct
Footnotes: F1, F3

ALAB transaction

Common Stock

Sale

Transaction value: $21,268
Shares: -54
Change %: -0.91%
Price: $393.86
Shares after: 5,890
Date: 24 Jun 2026
Ownership: Direct
Footnotes: F1

ALAB transaction

Common Stock

Sale

Transaction value: $57,888
Shares: -146
Change %: -2.5%
Price: $396.49
Shares after: 5,744
Date: 24 Jun 2026
Ownership: Direct
Footnotes: F1, F4

ALAB transaction

Common Stock

Sale

Transaction value: $65,722
Shares: -165
Change %: -2.9%
Price: $398.32
Shares after: 5,579
Date: 24 Jun 2026
Ownership: Direct
Footnotes: F1, F5

ALAB transaction

Common Stock

Sale

Transaction value: $11,599
Shares: -29
Change %: -0.52%
Price: $399.96
Shares after: 5,550
Date: 24 Jun 2026
Ownership: Direct
Footnotes: F1

ALAB holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 839
Date: 24 Jun 2026
Ownership: By Trust
Footnotes: F6

^* 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 6 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 November 25, 2024.

Footnote F2

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $391.1300 to $391.3800, 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

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $392.1500 to $392.8300, 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 F4

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $396.0700 to $396.8350, 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 $398.0000 to $398.6100, 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.

Footnote F6

These shares are owned directly by The Jantzen/Mayer Family 2002 Trust, of which the Reporting Person is a trustee. The Reporting Person disclaims beneficial ownership of these securities, except to the extent, if any, of her 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.