---
schema_version: "secwatch.filing_event.v1"
accession: "0001171843-25-007067"
form_type: "8-K"
ticker: "ASPN"
cik: "0001145986"
company_name: "ASPEN AEROGELS INC"
filed_at: "2025-11-06T23:59:59+00:00"
generated_at: "2026-05-16T23:22:31.365803+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Aspen Aerogels Q3 revenue $73M (-38% YoY); lowers FY2025 outlook on slower EV production

## Summary
- Revenue $73.0M vs $117.3M in Q3 2024 (down 38%); net loss $6.3M improved from $13.0M loss last year.
- Adjusted EBITDA fell to $6.3M from $25.4M in prior year; adjusted EPS loss $0.06 vs $0.17 loss.
- Cites lower near-term EV production in North America as reason for updated full-year 2025 outlook.
- PyroThin award from a major EU OEM; LNG and subsea project opportunities expected to drive growth in 2026.
- Restructuring and impairment charges of $1.6M included in Q3 net loss.

## SEC filing metadata
- accession: 0001171843-25-007067
- form_type: 8-K
- ticker: ASPN
- cik: 0001145986
- company_name: ASPEN AEROGELS INC
- filed_at: 2025-11-06T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1145986/000117184325007067/0001171843-25-007067-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1145986/000117184325007067/f8k_110625.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001171843-25-007067
- JSON: https://secwatch.observer/filing/0001171843-25-007067.json
- Plain text: https://secwatch.observer/filing/0001171843-25-007067.txt

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