Astera Labs (ALAB) General Counsel Philip Mazzara Sells Shares

What Happened Philip Mazzara, General Counsel and Secretary of Astera Labs (ALAB), reported multiple sales on 2026-08-17 totaling 6,801 shares for aggregate proceeds of approximately $2,315,754. Individual lots were sold at reported prices between $333.64 and $352.10; many lots were executed as block trades with weighted-average prices. Part of the disposition was automatic "sell-to-cover" to satisfy tax withholding on vested restricted stock units rather than a discretionary sale.

Key Details

• Transaction date: August 17, 2026 (Form 4 filed Aug 19, 2026 — within the typical 2-business-day window).
• Total shares sold: 6,801; total reported proceeds: ~$2.32 million.
• Reported per-lot prices ranged from $333.64 to $352.10; several lots reported as weighted-average prices with specific ranges in filing footnotes (F2–F19).
• Footnote F1 indicates shares were sold to satisfy tax withholding for vested RSUs ("sell-to-cover"); other footnotes note block trades for multiple holders and provide price ranges and availability of per-price breakdown on request.
• Shares owned after the reported transactions are not specified in the summary information provided.

Context

• These were sales (code "S") — sales and sell-to-cover transactions are common after RSU vesting and do not by themselves indicate insider sentiment.
• Many lots were processed as block trades on behalf of multiple holders; the filing notes the Reporting Person can supply detailed per-price allocations on request.
• No indication in the filing that this was an option exercise, gift, or a 10% owner transaction.