---
schema_version: "secwatch.filing_event.v1"
accession: "0001558370-25-000576"
form_type: "8-K"
ticker: "CBIO"
cik: "0001253689"
company_name: "CRESCENT BIOPHARMA, INC."
filed_at: "2025-01-31T23:59:59+00:00"
generated_at: "2026-05-27T04:35:24.768280+00:00"
event_type: "leadership"
sentiment: "negative"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# CEO and CFO to depart GlycoMimetics by March 31; will consult through merger close

## Summary
- CEO Harout Semerjian and CFO Brian Hahn notified board of intent to resign by March 31, 2025.
- Both expected to enter consulting agreements through expected close of merger with Crescent Biopharma.
- Departures coincide with pending merger; no replacements named yet.
- Notice date: January 29, 2025.

## SEC filing metadata
- accession: 0001558370-25-000576
- form_type: 8-K
- ticker: CBIO
- cik: 0001253689
- company_name: CRESCENT BIOPHARMA, INC.
- filed_at: 2025-01-31T23:59:59+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/1253689/000155837025000576/0001558370-25-000576-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1253689/000155837025000576/glyc-20250129x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001558370-25-000576
- JSON: https://secwatch.observer/filing/0001558370-25-000576.json
- Plain text: https://secwatch.observer/filing/0001558370-25-000576.txt

## Key facts
- Executive change
  Brian Hahn resigned as Chief Financial Officer at CRESCENT BIOPHARMA, INC..
  - Action: resigned
  - Role: Chief Financial Officer
  source text: Mr. Brian Hahn, the Company’s Chief Financial Officer, notified the Company’s board of directors of his intent to cease his respective employment with the Company no later than March 31, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1253689/000155837025000576/0001558370-25-000576-index.htm

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