Chu Steven 4

What Happened

• Steven Chu, a director of Amprius Technologies (AMPX), exercised option-based derivatives totaling 259,697 shares (three exercises) and concurrently sold shares in multiple open-market transactions. The option exercises required cash payments of about $332,437 in the aggregate, and the open-market sales generated approximately $5.86 million in gross proceeds.
• Exercises (acquired shares): 104,132 @ $0.62 (3/10) = $64,562; 86,143 @ $2.61 (3/12) = $224,833; 69,422 @ $0.62 (3/12) = $43,042. Open-market sales (disposed): 166,632 @ avg $17.92 (3/10) = $2,985,429; 100,000 @ avg $18.65 (3/12) = $1,864,670; 50,000 @ avg $18.21 (3/12) = $910,740; 5,565 @ avg $18.53 (3/12) = $103,145.
• Many exercised shares were also reported as disposed (derivative disposition entries), indicating the exercises were followed by sales (i.e., effectively a cashless or immediate sale of exercised shares).

Key Details

• Transaction dates and prices: exercises on 2026-03-10 and 2026-03-12; open-market sales on 2026-03-10 and 2026-03-12. Average sale prices ranged ~ $17.90–$18.78 depending on the lot (see footnotes for exact ranges).
• Aggregate proceeds from open-market sales: approximately $5.86 million. Aggregate exercise cost: approximately $332,437.
• Shares owned after transaction: not specified in the provided filing excerpt.
• Notable footnotes: F1 notes 44,444 restricted stock units are included in holdings (RSUs vest subject to schedule). F2–F5 explain reported sale prices are averages across multiple executions and give the price ranges. Exhibit 24 (Power of Attorney) is attached.
• Filing timeliness: Transactions occurred 3/10 and 3/12; the Form 4 was filed 2026-03-12 — no indication in this excerpt of a late filing.

Context

• Derivative code M denotes option exercise. Here, Chu exercised stock options (paid exercise prices) and many of the resulting shares were sold shortly after — a common pattern (cashless exercise or immediate disposition) that converts option value to cash; it does not by itself indicate ongoing bullishness or bearishness.
• For retail investors: purchases (buys) are often more informative about insider conviction; this filing is dominated by option exercises and sales, which are frequently routine monetizations of equity rather than directional bets.