---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-23-046197"
form_type: "8-K"
ticker: "IPSC"
cik: "0001850119"
company_name: "Century Therapeutics, Inc."
filed_at: "2023-04-17T23:59:59+00:00"
generated_at: "2026-06-17T01:34:36.789540+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Century Therapeutics CEO Osvaldo Flores steps down; Gregory Russotti named interim CEO, Michael Diem appointed CFO

## Summary
- Osvaldo Flores stepped down as President, CEO, and Board member effective April 11, 2023; no disagreement with the company.
- Board appointed Gregory Russotti (previously CTO) as Interim President and CEO; salary raised to $614,092.50.
- Russotti received a one-time option grant of 318,750 shares at $3.16/share, vesting over 4 years.
- Michael Diem, previously Chief Business Officer, promoted to CFO; compensation for new role TBD.
- Board reduced from 8 to 7 members following Flores' departure.

## SEC filing metadata
- accession: 0001104659-23-046197
- form_type: 8-K
- ticker: IPSC
- cik: 0001850119
- company_name: Century Therapeutics, Inc.
- filed_at: 2023-04-17T23:59:59+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/1850119/000110465923046197/0001104659-23-046197-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1850119/000110465923046197/tm239540d3_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-23-046197
- JSON: https://secwatch.observer/filing/0001104659-23-046197.json
- Plain text: https://secwatch.observer/filing/0001104659-23-046197.txt

## Key facts
- Executive change
  Gregory Russotti was appointed as Interim President and Chief Executive Officer at Century Therapeutics, Inc..
  - Action: appointed
  - Role: Interim President and Chief Executive Officer
  source text: On April 11, 2023, the Board appointed Gregory Russotti as Interim President and Chief Executive Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1850119/000110465923046197/0001104659-23-046197-index.htm
- Executive change
  Michael Diem changed role as Chief Financial Officer at Century Therapeutics, Inc..
  - Action: promoted
  - Role: Chief Financial Officer
  source text: On April 11, 2023, the Board promoted Michael Diem to Chief Financial Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1850119/000110465923046197/0001104659-23-046197-index.htm
- Executive change
  Osvaldo Flores departed as President and Chief Executive Officer at Century Therapeutics, Inc..
  - Action: stepped down
  - Role: President and Chief Executive Officer
  source text: Osvaldo Flores, Ph.D. stepped down as the President and Chief Executive Officer of Century Therapeutics, Inc. (the “Company”) and as a member of the Board of Directors of the Company (the “Board”) effective April 11, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1850119/000110465923046197/0001104659-23-046197-index.htm

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