---
schema_version: "secwatch.filing_event.v1"
accession: "0001171843-26-006048"
form_type: "8-K"
ticker: "ASPN"
cik: "0001145986"
company_name: "ASPEN AEROGELS INC"
filed_at: "2026-09-15T12:00:39+00:00"
generated_at: "2026-09-15T12:05:28.359334+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.1
calibrated_materiality_score: 0.1
confidence: "low"
source: SEC EDGAR
---

# Aspen Aerogels posts Sept 15 investor deck; full contents not visible in excerpt

## Summary
- Aspen Aerogels (NYSE: ASPN) published an investor presentation dated September 15, 2026.
- Exhibit 99.1 text shows only cover page and disclaimer; no financial data in excerpt.
- No revenue, guidance, or business updates are visible in the excerpted deck content.

## SEC filing metadata
- accession: 0001171843-26-006048
- form_type: 8-K
- ticker: ASPN
- cik: 0001145986
- company_name: ASPEN AEROGELS INC
- filed_at: 2026-09-15T12:00:39+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.1
- calibrated_materiality_score: 0.1
- confidence: low
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1145986/000117184326006048/0001171843-26-006048-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1145986/000117184326006048/f8k_091526.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001171843-26-006048
- JSON: https://secwatch.observer/filing/0001171843-26-006048.json
- Plain text: https://secwatch.observer/filing/0001171843-26-006048.txt

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