---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-034656"
form_type: "8-K"
ticker: "ASPN"
cik: "0001145986"
company_name: "ASPEN AEROGELS INC"
filed_at: "2025-03-06T23:59:59+00:00"
generated_at: "2026-05-25T04:56:30.648569+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Aspen Aerogels directors Blalock and Noetzel to retire at 2025 annual meeting; board to shrink to six

## Summary
- Rebecca B. Blalock and Mark L. Noetzel will retire from the board effective immediately after the April 30, 2025 annual meeting.
- The retirements are part of a regular refreshment process, not due to any disagreement with the company.
- Board size will decrease from eight to six members upon their departure.
- Committee chairs rotated: Katie Kool to lead Audit, William Noglows Compensation, Cari Robinson Nominating & Governance.
- Effective date of committee changes is the date of the 2025 Annual Meeting (April 30, 2025).

## SEC filing metadata
- accession: 0000950170-25-034656
- form_type: 8-K
- ticker: ASPN
- cik: 0001145986
- company_name: ASPEN AEROGELS INC
- filed_at: 2025-03-06T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1145986/000095017025034656/0000950170-25-034656-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1145986/000095017025034656/aspn-20250304.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-034656
- JSON: https://secwatch.observer/filing/0000950170-25-034656.json
- Plain text: https://secwatch.observer/filing/0000950170-25-034656.txt

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