| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Mazzara Philip | General Counsel and Secretary | C/O ASTERA LABS, INC., 2345 NORTH FIRST STREET, SAN JOSE | /s/ Philip Mazzara | 2025-10-03 | 0001998163 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ALAB | Common Stock | Sale | -$131K | -700 | -0.43% | $187.21 | 161K | Oct 1, 2025 | Direct | F1, F2 |
| transaction | ALAB | Common Stock | Sale | -$151K | -800 | -0.5% | $188.37 | 160K | Oct 1, 2025 | Direct | F1, F3 |
| transaction | ALAB | Common Stock | Sale | -$96.6K | -509 | -0.32% | $189.85 | 160K | Oct 1, 2025 | Direct | F1, F4 |
| transaction | ALAB | Common Stock | Sale | -$266K | -1.4K | -0.87% | $190.97 | 158K | Oct 1, 2025 | Direct | F1, F5 |
| transaction | ALAB | Common Stock | Sale | -$192K | -1K | -0.63% | $192.21 | 157K | Oct 1, 2025 | Direct | F1, F6 |
| transaction | ALAB | Common Stock | Sale | -$465K | -2.41K | -1.53% | $193.08 | 155K | Oct 1, 2025 | Direct | F1, F7 |
| transaction | ALAB | Common Stock | Sale | -$425K | -2.19K | -1.41% | $194.07 | 153K | Oct 1, 2025 | Direct | F1, F8 |
| transaction | ALAB | Common Stock | Sale | -$175K | -900 | -0.59% | $194.95 | 152K | Oct 1, 2025 | Direct | F1, F9 |
| transaction | ALAB | Common Stock | Sale | -$19.6K | -100 | -0.07% | $195.66 | 152K | Oct 1, 2025 | Direct | F1 |
Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.
Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).
| Id | Content |
|---|---|
| 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. |
| F2 | The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $186.6700 to $187.4900, 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 $187.8600 to $188.8500, 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 $189.3200 to $190.2900, 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 $190.4900 to $191.4400, 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. |
| F6 | The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $191.6000 to $192.5900, 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. |
| F7 | The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $192.6100 to $193.5300, 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. |
| F8 | The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $193.6300 to $194.6100, 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. |
| F9 | The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $194.6300 to $195.4800, 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. |