---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-110309"
form_type: "8-K"
ticker: "FISN"
cik: "0001918102"
company_name: "DEEP FISSION, INC."
filed_at: "2025-11-12T23:59:59+00:00"
generated_at: "2026-05-16T21:39:35.459807+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Deep Fission appoints COO, GC, and two new directors; Muller resigns from board

## Summary
- Richard A. Muller resigned from board to focus on CTO role; no disagreement with company.
- Michael Brasel appointed COO ($300k salary + 30% bonus + 70k option at $2.73), Jon Gordon appointed GC/Secretary ($315k + 30% bonus + 85k option).
- Leslie Goldman Tepper (independent) and Jonathon Angell joined board; board fixed at three members.
- New directors each received 100k RSUs vesting in 6 months; board committees (Nominating & Governance, Compensation) established.
- Non-Employee Director Compensation Policy adopted: annual cash retainers ($67.5k base, $10k audit chair, $9.5k comp/gov chair) plus equity awards.

## SEC filing metadata
- accession: 0001104659-25-110309
- form_type: 8-K
- ticker: FISN
- cik: 0001918102
- company_name: DEEP FISSION, INC.
- filed_at: 2025-11-12T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1918102/000110465925110309/0001104659-25-110309-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1918102/000110465925110309/tm2530746d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-110309
- JSON: https://secwatch.observer/filing/0001104659-25-110309.json
- Plain text: https://secwatch.observer/filing/0001104659-25-110309.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.