Every Form 4 that Astera Labs (ALAB) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow ALAB and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full ALAB filings page.
Astera Labs, Inc. (ALAB) reported an insider stock sale by a director on a Form 4. On 11/20/2025, the reporting person sold a total of 2,500 shares of common stock in a series of market transactions at weighted average prices ranging from about $142.09 to $159.11 per share. The filing states these sales occurred automatically under a pre-arranged Rule 10b5-1 trading plan adopted on May 28, 2025, which is designed to allow systematic selling regardless of day-to-day market conditions. After these transactions, the director directly owned 94,851 shares of Astera Labs common stock. No derivative security transactions were reported.
Astera Labs, Inc. (ALAB) reported insider activity by its General Counsel and Secretary via a Form 4. On 11/17/2025, the officer sold several small blocks of common stock to cover tax withholding tied to the vesting and settlement of previously granted restricted stock units. The filing shows sales of 454, 1,051, 1,801 and 1,314 shares at weighted average prices of $146.4164, $145.6894, $144.5341 and $143.5145, respectively, executed through multiple transactions within specified price ranges. After these sales, the reporting person beneficially owned 147,040 shares of Astera Labs common stock in direct ownership. The filing notes that the sales were automatic "sell to cover" transactions mandated by the issuer and do not represent discretionary trades by the insider.
Astera Labs, Inc. (ALAB) reported insider share activity by its Chief Financial Officer on a Form 4. On 11/17/2025, the CFO had several small sales of common stock, including 1,124, 2,609, 4,459 and 3,238 shares, at weighted average prices between $147.0000 and $143.1850 per share. According to the footnotes, these transactions were automatic “sell-to-cover” sales required to satisfy tax withholding tied to the vesting of previously granted restricted stock units, and are described as non-discretionary.
After these sales, the CFO directly beneficially owned 192,297 shares of common stock. In addition, 450,281 shares were held indirectly through the Tate 1997 Living Trust, where the reporting person is a trustee and disclaims full beneficial ownership except for any pecuniary interest.
Astera Labs, Inc. (ALAB) reported insider transactions by its President and COO, who is also a director, on 11/17/2025. The filing shows several same‑day open‑market sales of Common Stock coded as "S", including 4,421 shares at a weighted average price of $146.6536, 21,100 shares at $145.8837, 26,381 shares at $144.8026, 32,385 shares at $143.8385, and 6,172 shares at $143.2526. The footnotes explain these sales were automatic "sell to cover" transactions to satisfy tax withholding obligations upon vesting and settlement of previously granted restricted stock units, and are described as non‑discretionary. After these transactions, the executive is shown as directly holding 1,599,750 Common Stock shares. The report also lists 6,006,213 shares held by "Trust 1", and 695,000 shares each in "Trust 2" and "Trust 3", with the executive disclaiming beneficial ownership except for any pecuniary interest.
Astera Labs, Inc. (ALAB) reported a Form 4 for its Chief Executive Officer, who is also a director. On 11/17/2025, the reporting person executed several market sales of Astera Labs common stock, with individual transactions including 4,421, 21,100, 26,381, 32,385, and 6,172 shares at weighted average prices between $147.33 and $143.19 per share.
The filing explains that these sales were automatically executed to cover tax withholding obligations arising from the vesting and settlement of previously granted restricted stock units, based on an advance “sell to cover” election by the company, and did not represent discretionary trades by the CEO. After these transactions, the CEO reported direct ownership of 2,080,418 shares, plus additional indirect holdings through various trusts, including 4,130,002 shares held by a living trust and several estate planning trusts holding between 450,001 and 700,000 shares each.
Astera Labs, Inc. (ALAB) reported an insider share purchase by its General Counsel and Secretary. On 11/14/2025, the officer acquired 87 shares of common stock at a price of $78.3615 per share. These shares were bought through the company’s 2024 Employee Stock Purchase Plan in transactions described as exempt under Rule 16b-3(d) and Rule 16b-3(c). Following this transaction, the officer now beneficially owns 151,660 shares of Astera Labs common stock in direct ownership.
Philip Mazzara, General Counsel and Secretary of Astera Labs, Inc. (ALAB), reported automatic sales of 10,000 shares of the company's common stock on 10/01/2025 under a Rule 10b5-1 trading plan adopted on May 29, 2025. The Form 4 lists nine sell transactions executed the same day at weighted average prices for each block, with reported price ranges across the trades from $186.67 up to $195.48. Following the reported sales, the filing shows the reporting person beneficially owns 151,573 shares.
The Form 4 is signed by Mr. Mazzara on 10/03/2025 and contains explanatory footnotes stating the per-block prices are weighted averages and that detailed per-trade price breakdowns are available on request. No derivative securities are reported on this Form 4.