---
schema_version: "secwatch.filing_event.v1"
accession: "0001477932-25-007343"
form_type: "8-K"
ticker: "ASPI"
cik: "0001921865"
company_name: "ASP Isotopes Inc."
filed_at: "2025-10-03T23:59:59+00:00"
generated_at: "2026-05-17T04:49:13.914688+00:00"
event_type: "leadership"
sentiment: "negative"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# CEO Paul Mann steps down for health reasons; COO Robert Ainscow named Interim CEO

## Summary
- Effective Oct 1, 2025, Paul Mann becomes Executive Chairman; takes temporary CEO leave for health reasons.
- Robert Ainscow, previously COO, appointed Interim CEO (principal executive officer) effective Oct 1.
- Donald Ainscow (Robert's brother) is EVP, General Counsel & Secretary with base salary $425k/year + equity.
- No new compensatory arrangements entered into with Robert Ainscow in connection with Interim CEO role.

## SEC filing metadata
- accession: 0001477932-25-007343
- form_type: 8-K
- ticker: ASPI
- cik: 0001921865
- company_name: ASP Isotopes Inc.
- filed_at: 2025-10-03T23:59:59+00:00
- event_type: leadership
- sentiment: negative
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1921865/000147793225007343/0001477932-25-007343-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1921865/000147793225007343/aspi_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001477932-25-007343
- JSON: https://secwatch.observer/filing/0001477932-25-007343.json
- Plain text: https://secwatch.observer/filing/0001477932-25-007343.txt

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