Form 4 for ALAB Astera Labs, Inc.
Accepted 2026-04-21 16:19:19 ET · period of report 2026-04-17 · accession 0001231919-26-000382 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MT | 2026-04-21 16:19 | 2026-04-17+ | ALAB | Dyckerhoff Stefan A | Dir | S - Sale | $175.06 | -7,010 | 67.1K | -9% | -$1.23M |
| MTI | 2026-04-21 16:19 | 2026-04-17+ | ALAB | Dyckerhoff Stefan A | Dir | S - Sale | $175.06 | -18.0K | 6,614 | -73% | -$3.15M |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-04-17 | S | D | 3,253 | $175.00 | 70,901 | D | — | — | (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 $175.00 to $175.01 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. |
| 2 | Common | Common Stock | 2026-04-17 | S | D | 7,733 | $175.00 | 345,331 | I By Trust | — | — | (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 $175.00 to $175.01 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) 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. |
| 3 | Common | Common Stock | 2026-04-17 | S | D | 613 | $175.00 | 7,323 | I By Limited Partnership (TF) | — | — | (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 $175.00 to $175.01 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 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. |
| 4 | Common | Common Stock | 2026-04-20 | S | D | 3,757 | $175.12 | 67,144 | D | — | — | (F1) Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025. (F5) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $175.02 to $175.51 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. |
| 5 | Common | Common Stock | 2026-04-20 | S | D | 8,933 | $175.12 | 336,398 | I By Trust | — | — | (F1) Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025. (F5) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $175.02 to $175.51 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) 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. |
| 6 | Common | Common Stock | 2026-04-20 | S | D | 709 | $175.12 | 6,614 | I By Limited Partnership (TF) | — | — | (F1) Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025. (F5) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $175.02 to $175.51 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 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. |