Chu Steven 4
4 · Amprius Technologies, Inc. · Filed Mar 12, 2026
Research Summary
AI-generated summary of this filing
Amprius (AMPX) Director Steven Chu Exercises Options, Sells Shares
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.
Insider Transaction Report
Form 4
Chu Steven
Director
Transactions
- Exercise/Conversion
Common stock
[F1]2026-03-10$0.62/sh+104,132$64,562→ 293,971 total - Sale
Common stock
[F2][F1]2026-03-10$17.92/sh−166,632$2,985,429→ 127,339 total - Exercise/Conversion
Common stock
[F1]2026-03-12$2.61/sh+86,143$224,833→ 213,482 total - Exercise/Conversion
Common stock
[F1]2026-03-12$0.62/sh+69,422$43,042→ 282,904 total - Sale
Common stock
[F3][F1]2026-03-12$18.65/sh−100,000$1,864,670→ 182,904 total - Sale
Common stock
[F4][F1]2026-03-12$18.21/sh−50,000$910,740→ 132,904 total - Sale
Common stock
[F5][F1]2026-03-12$18.53/sh−5,565$103,145→ 127,339 total - Exercise/Conversion
Stock Option (right to buy)
2026-03-10$0.62/sh−104,132$64,562→ 69,422 totalExercise: $0.62From: 2024-10-23Exp: 2027-12-12→ Common stock (104,132 underlying) - Exercise/Conversion
Stock Option (right to buy)
2026-03-12$2.61/sh−86,143$224,833→ 184,108 totalExercise: $2.61From: 2022-09-14Exp: 2032-04-13→ Common stock (86,143 underlying) - Exercise/Conversion
Stock Option (right to buy)
2026-03-12$0.62/sh−69,422$43,042→ 0 totalExercise: $0.62From: 2024-10-23Exp: 2027-12-12→ Common stock (69,422 underlying)
Footnotes (5)
- [F1]Includes 44,444 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.
- [F2]The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $17.90 to $18.00, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
- [F3]The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $18.60 to $18.78, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
- [F4]The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $18.20 to $18.26, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
- [F5]The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $18.50 to $18.61, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
Signature
/s/ Ricardo C. Rodriguez, attorney-in-fact on behalf of Steven Chu|2026-03-12