---
schema_version: "secwatch.filing_event.v1"
accession: "0001660280-25-000065"
form_type: "8-K"
ticker: "TENB"
cik: "0001660280"
company_name: "Tenable Holdings, Inc."
filed_at: "2025-04-16T23:59:59+00:00"
generated_at: "2026-05-23T13:26:49.808621+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Tenable permanently appoints Steve Vintz and Mark Thurmond as co-CEOs

## Summary
- Vintz (CFO) and Thurmond (COO) named co-CEOs permanently effective April 16, 2025.
- They served as interim co-CEOs since Dec 2024; Board cites operational momentum.
- Vintz will remain CFO until a search is completed; Board search for new CFO underway.
- Board intends to appoint Vintz and Thurmond to the Board after May 14, 2025 annual meeting.
- Acquisition of Vulcan Cyber and Tenable One platform growth occurred under their interim leadership.

## SEC filing metadata
- accession: 0001660280-25-000065
- form_type: 8-K
- ticker: TENB
- cik: 0001660280
- company_name: Tenable Holdings, Inc.
- filed_at: 2025-04-16T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1660280/000166028025000065/0001660280-25-000065-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1660280/000166028025000065/tenb-20250416.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001660280-25-000065
- JSON: https://secwatch.observer/filing/0001660280-25-000065.json
- Plain text: https://secwatch.observer/filing/0001660280-25-000065.txt

## Key facts
- Executive change
  Stephen A. Vintz was appointed as co-Chief Executive Officer at Tenable Holdings, Inc..
  - Action: appointed
  - Role: co-Chief Executive Officer
  source text: On April 16, 2025, the Company announced that the Board unanimously appointed Mr. Vintz and Mr. Thurmond as co-Chief Executive Officers on a permanent basis.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1660280/000166028025000065/0001660280-25-000065-index.htm
- Executive change
  Mark Thurmond was appointed as co-Chief Executive Officer at Tenable Holdings, Inc..
  - Action: appointed
  - Role: co-Chief Executive Officer
  source text: On April 16, 2025, the Company announced that the Board unanimously appointed Mr. Vintz and Mr. Thurmond as co-Chief Executive Officers on a permanent basis.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1660280/000166028025000065/0001660280-25-000065-index.htm

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