As Of	Filer	Filing¹	For·On·As	Docs:Size	Issuer		Filing Agent

  3/1/22‡ Aspen Aerogels Inc.               10-K       12/31/21   98:14M                                    ActiveDisclosure/FA      
 2/11/22  Noglows William P                 5          Director²   1:11K  Aspen Aerogels Inc.               DONNELLEY FIN… File16/FA 

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‡	A non-Insider-Ownership Filing that was accepted after the SEC “closed” at 5:30:00pm ET.  The legal “Filed As Of” date may be the next, or another, day.
¹	Filing/Form Types:  -K
	5	Annual Statement of Changes in Beneficial Ownership of Securities by an Insider — Form 5 { The Filer is an Insider² of the Issuer }.
	10-K	Annual Report — Form 10-K.
²	Insider:  The Filer is a Director, Officer, 10% Owner and/or Other “insider” of the Issuer.