ASPN · NYSE · CIK 0001145986

ASPEN AEROGELS INC

ASPEN AEROGELS INC’s most recent SEC filing in our snapshot is a Form SCHEDULE 13G filed on Oct 19, 2026. In fiscal 2025 (year ended Dec 31, 2025) it reported revenue of $271.1M and net income of -$389.6M, according to its XBRL data on EDGAR. Its EDGAR record lists 19 Form 4 insider filings from the 12 months before our last refresh.

SEC EDGAR snapshot updated Oct 27, 2026, 11:27 PM EDT. See all filings on sec.gov.

Revenue, FY2025
$271.1M
Net income, FY2025
-$389.6M
Form 4 filings on record, past 12 months
19

Company overview

Legal name (as filed)
ASPEN AEROGELS INC
Ticker
ASPN
SEC Central Index Key (CIK)
0001145986
Business address
NORTHBOROUGH, MA
State or country of incorporation
DE
Fiscal year ends
December 31
SEC filer category
Accelerated filer
Position in SEC ticker list
#2977 of the 3,000 companies we track

Five-year financial highlights

Full-year figures from ASPEN AEROGELS INC’s annual reports, as tagged in XBRL and published by the SEC. Amounts are in U.S. dollars; the fiscal year is named for the calendar year in which it ends.

Revenue
$121.6MFY2021$180.4MFY2022$238.7MFY2023$452.7MFY2024$271.1MFY2025
Net income
-$37.1MFY2021-$82.7MFY2022-$45.8MFY2023$13.4MFY2024-$389.6MFY2025
ASPN annual results
ItemFY2021
ended Dec 31, 2021		FY2022
ended Dec 31, 2022		FY2023
ended Dec 31, 2023		FY2024
ended Dec 31, 2024		FY2025
ended Dec 31, 2025
Revenue$121.6M$180.4M$238.7M$452.7M$271.1M
Net income-$37.1M-$82.7M-$45.8M$13.4M-$389.6M
Diluted EPS-$1.22-$2.10-$0.66$0.17-$4.73
Total assets$183.0M$643.4M$703.0M$895.1M$406.7M
Cash and equivalents$76.6M$281.3M$139.7M$220.9M$156.9M

XBRL tags used: revenue = RevenueFromContractWithCustomerExcludingAssessedTax; netIncome = NetIncomeLoss; assets = Assets; eps = EarningsPerShareDiluted; cash = CashAndCashEquivalentsAtCarryingValue. EPS is shown as originally reported for each year and may not be adjusted for later stock splits. A dash means the company did not report that item in a form we could match.

How to read these numbers

Revenue is the money a company brings in from selling its products and services; net income is what is left after all expenses, interest and taxes. Diluted EPS spreads net income across every share that could exist if options and convertible securities were exercised. Total assets and cash are balance-sheet figures measured on the last day of the fiscal year. For the full story — segment results, one-time charges, guidance — read Management’s Discussion and Analysis in the Form 10-K.

Latest key reports

The most recent filing of each major report type, even if it falls outside the 40 newest filings below.

ASPN latest annual, quarterly, current and proxy reports
FiledFormWhat it isOriginal
Mar 13, 202610-KAnnual report· period Dec 31, 2025Document · Index
Aug 7, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Sep 15, 20268-KRegulation FD disclosure· period Sep 15, 2026Document · Index
Mar 27, 2026DEF 14ADefinitive proxy statement· period May 13, 2026Document · Index

Recent SEC filings

The 40 newest documents filed by or about ASPEN AEROGELS INC, by form type:

4 ×188-K ×6SCHEDULE 13G ×2SCHEDULE 13G/A ×210-Q ×2144 ×1SCHEDULE 13D/A ×1ARS ×1DEFA14A ×1DEF 14A ×110-K/A ×1PRE 14A ×110-K ×14/A ×13/A ×1
ASPN recent filings
FiledFormWhat it isOriginal
Oct 19, 2026SCHEDULE 13GPassive beneficial ownership report (over 5%)Document · Index
Oct 1, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 30, 2026Document · Index
Sep 24, 2026SCHEDULE 13D/AActive beneficial ownership report (over 5%)Document · Index
Sep 24, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 23, 2026Document · Index
Sep 15, 20268-KRegulation FD disclosure· period Sep 15, 2026Document · Index
Aug 13, 2026SCHEDULE 13G/APassive beneficial ownership report (over 5%)Document · Index
Aug 10, 2026144Notice of proposed sale of securitiesDocument · Index
Aug 7, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Aug 6, 20268-KResults of operations; Regulation FD disclosure· period Aug 6, 2026Document · Index
Jun 26, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 23, 2026Document · Index
May 18, 20268-KDirector or officer change; Shareholder vote results; Regulation FD disclosure· period May 12, 2026Document · Index
May 14, 20264Statement of changes in beneficial ownership (insider trade)· period May 13, 2026Document · Index
May 14, 20264Statement of changes in beneficial ownership (insider trade)· period May 13, 2026Document · Index
May 14, 20264Statement of changes in beneficial ownership (insider trade)· period May 13, 2026Document · Index
May 14, 20264Statement of changes in beneficial ownership (insider trade)· period May 13, 2026Document · Index
May 14, 20264Statement of changes in beneficial ownership (insider trade)· period May 13, 2026Document · Index
May 8, 202610-QQuarterly report· period Mar 31, 2026Document · Index
May 7, 20268-KResults of operations; Regulation FD disclosure· period May 7, 2026Document · Index
Apr 21, 20268-KRegulation FD disclosure; Other events· period Apr 21, 2026Document · Index
Mar 27, 2026ARSARS· period Dec 31, 2025Document · Index
Mar 27, 2026DEFA14AAdditional proxy soliciting materialsDocument · Index
Mar 27, 2026DEF 14ADefinitive proxy statement· period May 13, 2026Document · Index
Mar 26, 2026SCHEDULE 13G/APassive beneficial ownership report (over 5%)Document · Index
Mar 23, 202610-K/AAmended annual report· period Dec 31, 2025Document · Index
Mar 13, 2026PRE 14APRE 14A· period May 13, 2026Document · Index
Mar 13, 202610-KAnnual report· period Dec 31, 2025Document · Index
Mar 10, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 8, 2026Document · Index
Mar 10, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 8, 2026Document · Index
Mar 10, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 8, 2026Document · Index
Mar 10, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 8, 2026Document · Index
Mar 6, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 4, 2026Document · Index
Mar 6, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 4, 2026Document · Index
Mar 6, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 4, 2026Document · Index
Mar 6, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 4, 2026Document · Index
Mar 6, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 5, 2026Document · Index
Mar 6, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 4, 2026Document · Index
Feb 25, 20268-KResults of operations; Regulation FD disclosure· period Feb 25, 2026Document · Index
Feb 13, 2026SCHEDULE 13GPassive beneficial ownership report (over 5%)Document · Index
Dec 19, 20254/AStatement of changes in beneficial ownership (insider trade)· period Oct 1, 2025Document · Index
Dec 19, 20253/AInitial statement of beneficial ownership· period Oct 1, 2025Document · Index

Insider filing activity

19 Form 4 filings appear in ASPEN AEROGELS INC’s EDGAR record between Oct 28, 2025 and our last refresh. Most are reports by the company’s own directors, officers and 10% owners, but EDGAR also lists a Form 4 under a company when the company itself is the insider — for example, when it owns more than 10% of another public company. Foreign private issuers’ own insiders generally do not file Form 4. A high count is not by itself a signal: many Form 4s report routine stock awards, tax withholding or sales under pre-arranged Rule 10b5-1 plans. Open each filing to see the transaction code, share count and price. What a Form 4 shows.

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Source

  • U.S. Securities and Exchange Commission, EDGAR submissions for CIK 0001145986 and XBRL company facts. ASPEN AEROGELS INC on EDGAR.
  • Snapshot updated Oct 27, 2026, 11:27 PM EDT. The SEC does not endorse OpenFilings. Company names and tickers are used only to identify the filer; no logos are shown.

Not investment advice. This page summarizes public SEC filings for information only. Figures may contain errors or omissions; confirm everything in the original filing before relying on it.