DEEP FISSION, INC. 8-K

What Happened
Deep Fission, Inc. filed a Form 8-K on December 22, 2025 reporting that on December 19, 2025 the company increased its Board to five members and appointed Blake E. Janover and Thomas S. Glanville as independent directors. Mr. Janover was named a Class I director (term expiring at the 2026 annual meeting) and Mr. Glanville a Class II director (term expiring at the 2027 annual meeting). The Board also adopted a company-wide Insider Trading Policy on December 19, 2025.

Key Details

• Board changes effective December 19, 2025: Board size increased to five directors; Janover and Glanville added.
• Director terms: Janover — Class I (term to 2026 annual meeting); Glanville — Class II (term to 2027 annual meeting).
• Committee assignments: Janover → Audit Committee and Nominating & Governance Committee; Glanville → Chair of the Audit Committee and member of the Compensation Committee. Leslie Goldman-Tepper was also added to the Audit Committee.
• Governance and compliance: Both new directors are designated independent under Nasdaq/SEC standards. The Insider Trading Policy (filed as Exhibit 19.1) prohibits insider trading and tipping, sets blackout-period rules, and includes pre-clearance and Rule 10b5-1 plan requirements.

Why It Matters
These changes affect corporate governance and compliance: adding two independent directors and naming an Audit Committee chair can influence financial oversight and board independence, while the formal Insider Trading Policy establishes clearer trading controls for directors, officers and other covered persons. For investors, these are notable governance developments reported in the company’s 8-K that may impact oversight and disclosure practices.