Mazzara Philip's Form 4 filing
Astera Labs, Inc. (ALAB) · filed Aug 19, 2026
- Accession no.
- 0001998163-26-000022
- Filed
- Aug 19, 2026, 6:11 PM ET
- Trade date
- Aug 17, 2026
- Filing delay
- 2 days
- Rule 10b5-1 plan
- Not checked
This filing lists 18 non-derivative transactions. Open-market sales total $2.32M. It was filed 2 days after the trade.
Reporting owners
A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.
| Owner | Relationship to the company |
|---|---|
| Mazzara PhilipCIK 0001998163 | Officer (General Counsel and Secretary) |
Non-derivative securities (Table I)
Acquisitions and disposals of common stock and similar shares, one row per line on the filing.
| Trade date | Security | Transaction | Shares | Price | Value | Shares after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 17, 2026 | Common Stock | SSaleDisposed | −44 | $352.10F2 | −$15,492.52 | 103,299 | Direct | |
| Aug 17, 2026 | Common Stock | SSaleDisposed | −82 | $351.24F3 | −$28,801.41 | 103,217 | Direct | |
| Aug 17, 2026 | Common Stock | SSaleDisposed | −156 | $349.19F4 | −$54,473.19 | 103,061 | Direct | |
| Aug 17, 2026 | Common Stock | SSaleDisposed | −81 | $348.05F5 | −$28,192.29 | 102,980 | Direct | |
| Aug 17, 2026 | Common Stock | SSaleDisposed | −269 | $347.02F6 | −$93,347.09 | 102,711 | Direct | |
| Aug 17, 2026 | Common Stock | SSaleDisposed | −199 | $346.13F7 | −$68,879.31 | 102,512 | Direct | |
| Aug 17, 2026 | Common Stock | SSaleDisposed | −1,310 | $344.99F8 | −$451,942.8 | 101,202 | Direct | |
| Aug 17, 2026 | Common Stock | SSaleDisposed | −287 | $343.94F9 | −$98,709.55 | 100,915 | Direct | |
| Aug 17, 2026 | Common Stock | SSaleDisposed | −415 | $342.95F10 | −$142,323.38 | 100,500 | Direct | |
| Aug 17, 2026 | Common Stock | SSaleDisposed | −125 | $341.71F11 | −$42,713.56 | 100,375 | Direct | |
| Aug 17, 2026 | Common Stock | SSaleDisposed | −205 | $340.58F12 | −$69,819.84 | 100,170 | Direct | |
| Aug 17, 2026 | Common Stock | SSaleDisposed | −504 | $339.74F13 | −$171,231.33 | 99,666 | Direct | |
| Aug 17, 2026 | Common Stock | SSaleDisposed | −610 | $338.58F14 | −$206,535.94 | 99,056 | Direct | |
| Aug 17, 2026 | Common Stock | SSaleDisposed | −797 | $337.76F15 | −$269,192.49 | 98,259 | Direct | |
| Aug 17, 2026 | Common Stock | SSaleDisposed | −227 | $336.65F16 | −$76,418.71 | 98,032 | Direct | |
| Aug 17, 2026 | Common Stock | SSaleDisposed | −136 | $335.42F17 | −$45,616.82 | 97,896 | Direct | |
| Aug 17, 2026 | Common Stock | SSaleDisposed | −540 | $334.23F18 | −$180,482.58 | 97,356 | Direct | |
| Aug 17, 2026 | Common Stock | SSaleDisposed | −814 | $333.64F19 | −$271,581.09 | 96,542 | Direct |
Footnotes and remarks
Livermore keeps the footnotes that transaction prices refer to, all footnotes of amendments (Form 4/A) and the filing's remarks. Other footnotes, such as how indirect holdings are held or the details of a trading plan, are only in the original on SEC EDGAR.
- F2
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $351.7600 to $352.5000, 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.
Referenced by the price of 1 transaction in Table I.
- F3
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $350.8850 to $351.5000, 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.
Referenced by the price of 1 transaction in Table I.
- F4
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $348.8000 to $349.7300, 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.
Referenced by the price of 1 transaction in Table I.
- F5
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $347.6800 to $348.6300, 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.
Referenced by the price of 1 transaction in Table I.
- F6
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $346.6200 to $347.5600, 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.
Referenced by the price of 1 transaction in Table I.
- F7
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $345.5900 to $346.5050, 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.
Referenced by the price of 1 transaction in Table I.
- F8
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $344.5100 to $345.5000, 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.
Referenced by the price of 1 transaction in Table I.
- F9
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $343.4100 to $344.4000, 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.
Referenced by the price of 1 transaction in Table I.
- F10
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $342.4400 to $343.3800, 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.
Referenced by the price of 1 transaction in Table I.
- F11
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $341.4300 to $342.3800, 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.
Referenced by the price of 1 transaction in Table I.
- F12
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $340.2200 to $341.2150, 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.
Referenced by the price of 1 transaction in Table I.
- F13
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $339.2100 to $340.2000, 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.
Referenced by the price of 1 transaction in Table I.
- F14
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $338.2000 to $339.1900, 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.
Referenced by the price of 1 transaction in Table I.
- F15
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $337.2600 to $338.1850, 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.
Referenced by the price of 1 transaction in Table I.
- F16
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $336.0450 to $337.0000, 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.
Referenced by the price of 1 transaction in Table I.
- F17
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $335.2425 to $335.9750, 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.
Referenced by the price of 1 transaction in Table I.
- F18
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $333.8100 to $334.8050, 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.
Referenced by the price of 1 transaction in Table I.
- F19
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $333.3600 to $333.4250, 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.
Referenced by the price of 1 transaction in Table I.