X0306 4/A 2022-05-02 2022-05-03 0 0001145986 ASPEN AEROGELS INC ASPN 0001888978 Wood River Capital, LLC 4111 E. 37TH STREET NORTH WICHITA KS 67220 0 0 1 0 Common Stock 5254110 D On May 3, 2022, Wood River Capital, LLC ("Wood River") filed a Form 4, which inadvertently reported that, following the transfer of shares of common stock of Aspen Aerogels Inc. (the "Issuer") from Spring Creek Capital, LLC to Wood River, Wood River directly owned 6,324,449 shares of the Issuer's common stock. In fact, as reported in this amendment, Wood River directly owned 5,254,110 shares of the Issuer's common stock. Wood River Capital, LLC /s/ Raffaele G. Fazio, Vice President and Secretary 2022-11-14