---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-037472"
form_type: "8-K"
ticker: "OKLO"
cik: "0001849056"
company_name: "Oklo Inc."
filed_at: "2025-04-22T23:59:59+00:00"
generated_at: "2026-05-23T09:31:19.096463+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Sam Altman resigns as Chair and Class II director of Oklo, effective April 22, 2025

## Summary
- Sam Altman resigned as Chair and Class II director of Oklo Inc., effective April 22, 2025.
- Altman also left the Nominating and Corporate Governance Committee.
- Resignation was not due to any disagreement with the company's operations, policies, or practices.
- No replacement for Chair or board seat has been announced.

## SEC filing metadata
- accession: 0001104659-25-037472
- form_type: 8-K
- ticker: OKLO
- cik: 0001849056
- company_name: Oklo Inc.
- filed_at: 2025-04-22T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1849056/000110465925037472/0001104659-25-037472-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1849056/000110465925037472/tm2512904d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-037472
- JSON: https://secwatch.observer/filing/0001104659-25-037472.json
- Plain text: https://secwatch.observer/filing/0001104659-25-037472.txt

## Key facts
- Executive change
  Sam Altman resigned as Chair and Class II director at Oklo Inc..
  - Action: resigned
  - Role: Chair and Class II director
  source text: On April 22, 2025, Sam Altman notified the board of directors (the “Board”) of Oklo Inc. (the “Company”) that he intended to resign as Chair and as a Class II director of the Board, including as a member of the Board’s Nominating and Corporate Governance Committee, effective April 22, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1849056/000110465925037472/0001104659-25-037472-index.htm

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