Peres Mark Wayne 4
4 · DEEP FISSION, INC. · Filed Mar 10, 2026
Research Summary
AI-generated summary of this filing
Deep Fission CNO Mark Peres Receives 223,000-Share Award
What Happened
- Mark Wayne Peres, Chief Nuclear Officer of Deep Fission, Inc., was granted a derivative award covering 223,000 shares on 2026-03-09. The Form 4 lists the acquisition price as $0.00 and classifies the grant as a derivative security (an award of options to purchase common stock).
Key Details
- Transaction date: 2026-03-09; Form 4 filed: 2026-03-10 (timely).
- Amount granted: 223,000 derivative securities (reported as 223,000 shares acquired at $0.00).
- Vesting: One-fourth vests on the first vesting date shown, then 1/36 of the total vests each month thereafter until fully vested (per footnote).
- Shares owned after transaction: Not specified in the filing.
- Filing status: No late filing indicated.
Context
- This was an equity award (options grant) for compensation, not an open-market purchase or sale—such awards are routine and reflect company compensation policy rather than an immediate buying/selling signal.
- The filing reports the award as a derivative security; the vesting schedule means the holder must wait for vesting before converting options into shares.
Insider Transaction Report
Form 4
Peres Mark Wayne
Chief Nuclear Officer
Transactions
- Award
Employee Stock Option (right to buy)
[F1]2026-03-09+223,000→ 263,000 totalExercise: $15.00From: 2027-03-09Exp: 2036-03-09→ Common Stock (223,000 underlying)
Footnotes (1)
- [F1]Date at which first vesting occurs is indicated. One-fourth of the total number of options to purchase the Company's common stock vests on the first vesting date shown and an additional one-thirty sixth on each month thereafter until fully vested.
Signature
/s/ Jon Gordon, as Attorney-in-Fact for Mark Wayne Peres|2026-03-10