---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-24-003759"
form_type: "8-K"
ticker: "ASPN"
cik: "0001145986"
company_name: "ASPEN AEROGELS INC"
filed_at: "2024-01-11T23:59:59+00:00"
generated_at: "2026-06-07T00:23:36.399825+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Aspen Aerogels pre-announces FY2023 revenue $238M (+32% YoY); 2024 outlook $350M (+47%)

## Summary
- FY2023 revenue $238M (+32% YoY); Q4 revenue $84M (+38% QoQ).
- PyroThin thermal barrier revenue $110M in 2023 (+98% YoY), $53M in Q4 (+61% QoQ).
- 2024 baseline revenue outlook $350M, potential >47% YoY growth.
- Q4 revenue run rate enabled positive adjusted EBITDA; net loss continues.
- Supplemental Energy Industrial supply began shipping in Q4; $75M Dec 2023 financing.

## SEC filing metadata
- accession: 0000950170-24-003759
- form_type: 8-K
- ticker: ASPN
- cik: 0001145986
- company_name: ASPEN AEROGELS INC
- filed_at: 2024-01-11T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1145986/000095017024003759/0000950170-24-003759-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1145986/000095017024003759/aspn-20240111.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-24-003759
- JSON: https://secwatch.observer/filing/0000950170-24-003759.json
- Plain text: https://secwatch.observer/filing/0000950170-24-003759.txt

## Key facts
- Earnings Releases
  ASPEN AEROGELS INC reported full year 2023 results: revenue $238 million.
  - Period: full year 2023
  - Revenue: $238 million
  - Result: preliminary results
  source text: 2.02 of this Current Report on Form 8-K. --- EX-99.1 (EX-99.1) --- EX-99.1 Exhibit 99.1 Aspen Aerogels, Inc. Provides Business Update Pre-Announces Full Year 2023 Revenues of $238 million; $84 million in Q4 Supplemental supply for Energy Industrial products initiated in Q4 Potential to Deliver Over 47% YoY revenue growth in 2024 NORTHBOROUGH, MA, January 11, 2023
  evidence_url: https://www.sec.gov/Archives/edgar/data/1145986/000095017024003759/0000950170-24-003759-index.htm

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