---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-083880"
form_type: "8-K"
ticker: "CLDX"
cik: "0000744218"
company_name: "Celldex Therapeutics, Inc."
filed_at: "2026-07-15T20:07:43+00:00"
generated_at: "2026-07-15T20:09:04.304165+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Celldex Therapeutics CFO Sam Martin to retire by March 31, 2027; search underway

## Summary
- Sam Martin, SVP and CFO, notified of his retirement effective on or about March 31, 2027.
- Martin joined Celldex in April 2009 and has served as CFO since July 2017.
- Company has initiated a search for a new CFO; Martin will continue until successor or March 31, 2027.

## SEC filing metadata
- accession: 0001104659-26-083880
- form_type: 8-K
- ticker: CLDX
- cik: 0000744218
- company_name: Celldex Therapeutics, Inc.
- filed_at: 2026-07-15T20:07:43+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/744218/000110465926083880/0001104659-26-083880-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/744218/000110465926083880/tm2620527d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-083880
- JSON: https://secwatch.observer/filing/0001104659-26-083880.json
- Plain text: https://secwatch.observer/filing/0001104659-26-083880.txt

## Key facts
- Executive change
  Sam Martin departed as Senior Vice President and Chief Financial Officer at Celldex Therapeutics, Inc..
  - Action: retire
  - Role: Senior Vice President and Chief Financial Officer
  source text: On July 10, 2026, Sam Martin, Senior Vice President and Chief Financial Officer of Celldex Therapeutics, Inc. (the “Company”), notified the Company of his plans to retire effective on or about March 31, 2027.
  evidence_url: https://www.sec.gov/Archives/edgar/data/744218/000110465926083880/0001104659-26-083880-index.htm

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