Aspen Aerogels Inc.

ASPN

Financials

10-QQ2 ended 06/30/2608/07/26 10-QQ1 ended 03/31/2605/08/26 10-K/AFY 202503/23/26 10-KFY 202503/13/26 10-QQ3 ended 09/30/2511/06/25

Disclosures

8-KCurrent report09/15/26 8-KCurrent report08/06/26 8-KCurrent report05/18/26 8-KCurrent report05/07/26 8-KCurrent report04/21/26

Prospectuses and Registrations

S-8Registration of securities for employees05/08/25 S-8Registration of securities for employees05/08/25 424B5Prospectus supplement10/22/24 424B5Prospectus supplement10/21/24 S-3ASRAutomatic shelf registration10/21/24

Proxies

DEF 14ADefinitive proxy03/27/26 DEFA14AAdditional proxy materials03/27/26 PRE 14APreliminary proxy03/13/26 DEF 14ADefinitive proxy03/17/25 DEFA14AAdditional proxy materials03/17/25

Ownership

SC 13GBeneficial ownership10/19/26 Form 4Insider transaction10/01/26 Form 4Insider transaction09/24/26 SC 13D/ABeneficial ownership (amended)09/24/26 SC 13G/ABeneficial ownership (amended)08/13/26

Other

ARSAnnual report to shareholders03/27/26 ARSAnnual report to shareholders03/17/25 EFFECTRequest for effectiveness05/10/24 CORRESPCorrespondence with the SEC05/08/24 UPLOADLetter from the SEC05/08/24