---
schema_version: "secwatch.filing_event.v1"
accession: "0001171843-26-001072"
form_type: "8-K"
ticker: "ASPN"
cik: "0001145986"
company_name: "ASPEN AEROGELS INC"
filed_at: "2026-02-25T23:59:59+00:00"
generated_at: "2026-05-16T00:07:26.911511+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Aspen Aerogels Q4 revenue drops 66% to $41.3M; net loss $72.9M; initiates strategic review

## Summary
- Q4 revenue $41.3M (-66% YoY); Thermal barrier $16.1M, Energy Industrial $25.3M.
- Net loss $72.9M vs income $11.4M; adjusted net loss $27.7M. Full year net loss $389.6M includes $291.2M impairment on Statesboro plant.
- Full year revenue $271.1M (down 40% YoY); adjusted EBITDA $2.9M vs $89.9M.
- Cash $158.6M at year-end; expects $37.6M GM commercial settlement payment in Q1 2026.
- Initiated strategic review to strengthen long-term competitive positioning; North Sea subsea pipeline award.

## SEC filing metadata
- accession: 0001171843-26-001072
- form_type: 8-K
- ticker: ASPN
- cik: 0001145986
- company_name: ASPEN AEROGELS INC
- filed_at: 2026-02-25T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1145986/000117184326001072/0001171843-26-001072-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1145986/000117184326001072/f8k_022526.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001171843-26-001072
- JSON: https://secwatch.observer/filing/0001171843-26-001072.json
- Plain text: https://secwatch.observer/filing/0001171843-26-001072.txt

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