=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-06-24
10b5-1 Pre-arranged Plan: Yes
--- Issuer ---
Name: Astera Labs, Inc. (ALAB)
CIK: 0001736297
--- Reporting Owner ---
Name: Mayer Bethany
CIK: 0001405693
Role: Director
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Common Stock
Date: 2026-06-24 | Code: S (Open market sale)
Shares: -99 | Price: $391.27
Total Value: $38,735.62
Shares Owned After: 6,137 | Ownership: D (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 November 25, 2024.
[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.
[Transaction #2]
Security: Common Stock
Date: 2026-06-24 | Code: S (Open market sale)
Shares: -193 | Price: $392.67
Total Value: $75,786.20
Shares Owned After: 5,944 | Ownership: D (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 November 25, 2024.
[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.
[Transaction #3]
Security: Common Stock
Date: 2026-06-24 | Code: S (Open market sale)
Shares: -54 | Price: $393.86
Total Value: $21,268.44
Shares Owned After: 5,890 | Ownership: D (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 November 25, 2024.
[Transaction #4]
Security: Common Stock
Date: 2026-06-24 | Code: S (Open market sale)
Shares: -146 | Price: $396.49
Total Value: $57,887.76
Shares Owned After: 5,744 | Ownership: D (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 November 25, 2024.
[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.
[Transaction #5]
Security: Common Stock
Date: 2026-06-24 | Code: S (Open market sale)
Shares: -165 | Price: $398.32
Total Value: $65,722.04
Shares Owned After: 5,579 | Ownership: D (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 November 25, 2024.
[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.
[Transaction #6]
Security: Common Stock
Date: 2026-06-24 | Code: S (Open market sale)
Shares: -29 | Price: $399.96
Total Value: $11,598.84
Shares Owned After: 5,550 | Ownership: D (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 November 25, 2024.
--- Holdings ---
[Holding #1]
Security: Common Stock
Ownership: I (Indirect)
Footnotes:
[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.
--- Footnotes (Complete Index) ---
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.
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.
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.
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.
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.
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.
--- Signature ---
/s/ /s/ Philip Mazzara, Attorney-in-Fact (2026-06-26)
