Astera Labs, Inc. (ALAB) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-06-03 10b5-1 Pre-arranged Plan: Yes --- Issuer --- Name: Astera Labs, Inc. (ALAB) CIK: 0001736297 --- Reporting Owner --- Name: Dyckerhoff Stefan A CIK: 0001484394 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-06-03 | Code: S (Open market sale) Shares: -3,077 | Price: $364.25 Total Value: $1,120,784.94 Shares Owned After: 60,562 | Ownership: D (Direct) Footnotes: [F1] Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025. [F2] The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $363.395 to $364.35 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the 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] Includes shares to be issued in connection with the vesting of one or more restricted stock units. The Reporting Person shares pecuniary interest in these shares with other parties pursuant to contractual relationships. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest in these shares. [Transaction #2] Security: Common Stock Date: 2026-06-03 | Code: S (Open market sale) Shares: -7,314 | Price: $364.25 Total Value: $2,664,095.24 Shares Owned After: 320,751 | Ownership: I (Indirect) | Nature: By Trust Footnotes: [F1] Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025. [F2] The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $363.395 to $364.35 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the 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] Shares held by a trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein. [Transaction #3] Security: Common Stock Date: 2026-06-03 | Code: S (Open market sale) Shares: -580 | Price: $364.25 Total Value: $211,262.68 Shares Owned After: 5,373 | Ownership: I (Indirect) | Nature: By Limited Partnership (TF) Footnotes: [F1] Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025. [F2] The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $363.395 to $364.35 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the 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] Shares held by a limited partnership of which the Reporting Person is a trustee of a trust which is the general partner. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein. [Transaction #4] Security: Common Stock Date: 2026-06-03 | Code: S (Open market sale) Shares: -428 | Price: $365.09 Total Value: $156,257.24 Shares Owned After: 60,134 | Ownership: D (Direct) Footnotes: [F1] Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025. [F6] The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $365.00 to $365.49 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the 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] Includes shares to be issued in connection with the vesting of one or more restricted stock units. The Reporting Person shares pecuniary interest in these shares with other parties pursuant to contractual relationships. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest in these shares. [Transaction #5] Security: Common Stock Date: 2026-06-03 | Code: S (Open market sale) Shares: -1,019 | Price: $365.09 Total Value: $372,023.65 Shares Owned After: 319,732 | Ownership: I (Indirect) | Nature: By Trust Footnotes: [F1] Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025. [F6] The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $365.00 to $365.49 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the 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] Shares held by a trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein. [Transaction #6] Security: Common Stock Date: 2026-06-03 | Code: S (Open market sale) Shares: -81 | Price: $365.09 Total Value: $29,572.05 Shares Owned After: 5,292 | Ownership: I (Indirect) | Nature: By Limited Partnership (TF) Footnotes: [F1] Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025. [F6] The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $365.00 to $365.49 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the 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] Shares held by a limited partnership of which the Reporting Person is a trustee of a trust which is the general partner. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein. [Transaction #7] Security: Common Stock Date: 2026-06-04 | Code: A (Grant or award) Shares: +837 | Price: $0.00 Shares Owned After: 60,971 | Ownership: D (Direct) Footnotes: [F7] These shares represent an award of restricted stock units (RSUs) granted on June 4, 2026 (the Grant Date) under the Astera Labs, Inc. 2024 Stock Option and Incentive Plan. Such award vests in full upon the earlier of (i) the first anniversary of the Grant Date or (ii) the date of the next annual stockholder meeting of the Issuer following the Grant Date, subject to the Reporting Person's continuous service relationship with the Issuer through such vesting date. Each RSU represents a contingent right to receive one share of the Issuer's Common Stock. [F3] Includes shares to be issued in connection with the vesting of one or more restricted stock units. The Reporting Person shares pecuniary interest in these shares with other parties pursuant to contractual relationships. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest in these shares. --- Holdings --- [Holding #1] Security: Common Stock Ownership: I (Indirect) Footnotes: [F8] Shares held by an irrevocable trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein. [Holding #2] Security: Common Stock Ownership: I (Indirect) Footnotes: [F8] Shares held by an irrevocable trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein. [Holding #3] Security: Common Stock Ownership: I (Indirect) Footnotes: [F8] Shares held by an irrevocable trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein. [Holding #4] Security: Common Stock Ownership: I (Indirect) Footnotes: [F8] Shares held by an irrevocable trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein. [Holding #5] Security: Common Stock Ownership: I (Indirect) Footnotes: [F8] Shares held by an irrevocable trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein. --- Footnotes (Complete Index) --- F1: Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025. F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $363.395 to $364.35 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the 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: Includes shares to be issued in connection with the vesting of one or more restricted stock units. The Reporting Person shares pecuniary interest in these shares with other parties pursuant to contractual relationships. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest in these shares. F4: Shares held by a trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein. F5: Shares held by a limited partnership of which the Reporting Person is a trustee of a trust which is the general partner. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein. F6: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $365.00 to $365.49 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the 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. F7: These shares represent an award of restricted stock units (RSUs) granted on June 4, 2026 (the Grant Date) under the Astera Labs, Inc. 2024 Stock Option and Incentive Plan. Such award vests in full upon the earlier of (i) the first anniversary of the Grant Date or (ii) the date of the next annual stockholder meeting of the Issuer following the Grant Date, subject to the Reporting Person's continuous service relationship with the Issuer through such vesting date. Each RSU represents a contingent right to receive one share of the Issuer's Common Stock. F8: Shares held by an irrevocable trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein. --- Signature --- /s/ /s/ Kanwalpreet S. Kalra, Attorney-in-Fact (2026-06-05)