---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-149605"
form_type: "8-K"
ticker: "DH"
cik: "0001861795"
company_name: "Definitive Healthcare Corp."
filed_at: "2026-04-09T23:59:59+00:00"
generated_at: "2026-05-15T06:49:18.358784+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Definitive Healthcare terminates nominating agreement with Spectrum; designee resigned

## Summary
- Spectrum had right to designate one director nominee while holding ≥5% of outstanding shares.
- Jeff Haywood, Spectrum's designee, resigned from board on March 30, 2026.
- On April 3, 2026, Definitive Healthcare and Spectrum permanently terminated the Nominating Agreement.
- Termination removes Spectrum's board nomination right effective immediately.
- No reason for termination disclosed in the filing.

## SEC filing metadata
- accession: 0001193125-26-149605
- form_type: 8-K
- ticker: DH
- cik: 0001861795
- company_name: Definitive Healthcare Corp.
- filed_at: 2026-04-09T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 1.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1861795/000119312526149605/0001193125-26-149605-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1861795/000119312526149605/dh-20260403.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-149605
- JSON: https://secwatch.observer/filing/0001193125-26-149605.json
- Plain text: https://secwatch.observer/filing/0001193125-26-149605.txt

## Source-grounded claims
- claim_id: 5d845d939ed6de176b8dd7d4b6cfd2967a639c23
  claim: Definitive Healthcare Corp. terminated Nominating Agreement with SE VII DHC AIV, L.P. (effective 2026-04-03).
  evidence_excerpt: the Company and Spectrum entered into a termination agreement that permanently and irrevocably terminated the Nominating Agreement in its entirety.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1861795/000119312526149605/0001193125-26-149605-index.htm

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