---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-328789"
form_type: "8-K"
ticker: "BL"
cik: "0001666134"
company_name: "BLACKLINE, INC."
filed_at: "2025-12-22T23:59:59+00:00"
generated_at: "2026-05-16T12:25:29.583582+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# BlackLine board member Tom Unterman to retire at 2026 annual meeting

## Summary
- Tom Unterman will not stand for re-election to BlackLine board at May 2026 annual meeting.
- Board size to reduce from 12 to 11 immediately after the election.
- Unterman served since 2010; retirement not due to any disagreement with the company.
- CEO Owen Ryan expressed gratitude for Unterman's decade of service.

## SEC filing metadata
- accession: 0001193125-25-328789
- form_type: 8-K
- ticker: BL
- cik: 0001666134
- company_name: BLACKLINE, INC.
- filed_at: 2025-12-22T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1666134/000119312525328789/0001193125-25-328789-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1666134/000119312525328789/d67115d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-328789
- JSON: https://secwatch.observer/filing/0001193125-25-328789.json
- Plain text: https://secwatch.observer/filing/0001193125-25-328789.txt

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