LAZAR JACK R 4

What Happened
Jack R. Lazar, a director of Astera Labs, sold a total of 7,500 shares in open-market transactions on March 5, 2026, generating aggregate proceeds of approximately $898,472. The reported blocks were: 1,601 shares at $118.15 ($189,154); 3,167 shares at $119.49 ($378,436); 1,200 shares at $120.22 ($144,266); 1,035 shares at $121.30 ($125,550); 212 shares at $122.02 ($25,868); and 285 shares at $123.50 ($35,198). The filing notes that these sales were made automatically under a Rule 10b5-1 trading plan.

Key Details

• Transaction date: March 5, 2026 (reported on Form 4 filed March 9, 2026).
• Aggregate shares sold: 7,500; aggregate proceeds: approximately $898,472.
• Reported weighted-average prices and ranges (per filing footnotes):
  • 1,601 shares — $118.15 (prices ranged $117.6400–$118.6200).
  • 3,167 shares — $119.49 (prices ranged $118.7700–$119.6700).
  • 1,200 shares — $120.22 (prices ranged $119.8100–$120.7600).
  • 1,035 shares — $121.30 (prices ranged $120.8800–$121.8000).
  • 212 shares — $122.02 (prices ranged $121.9100–$122.0800).
  • 285 shares — $123.50 (single reported weighted price).
• Sales executed pursuant to a Rule 10b5-1 trading plan adopted December 2, 2025 (automatic, pre-scheduled trades).
• Shares owned after transaction: not disclosed in this Form 4.
• Timeliness: Form 4 filed on March 9, 2026; filing appears to meet the standard Form 4 reporting deadline.

Context
These were sales (not purchases or option exercises). Transactions under a 10b5-1 plan are pre-arranged and commonly used to avoid real-time trading decisions; the filing is informational and does not by itself indicate the director’s current views on the company.