Simpson Thacher represented Goldman Sachs & Co. LLC and Morgan Stanley & Co. LLC in connection with the registered follow-on offering of 4,887,500 shares of common stock by Aspen Aerogels, Inc. (“Aspen”), which includes the exercise in full of the underwriters’ option to purchase additional shares. The offering raised approximately $97.8 million in gross proceeds.~~Aspen intends to use the net proceeds from the offering for working capital, capital expenditures and general corporate purposes.~~Aspen is an aerogel technology company that designs, develops and manufactures innovative, high-performance aerogel materials used primarily in the energy industrial, sustainable insulation materials and electric vehicle markets.~~The Simpson Thacher team included Roxane Reardon, Dave Azarkh, Traci Biedermann, J. Carr Gamble and Louise Choi (Capital Markets); Michael Mann and Mohanad Salaimi (Tax); Pasco Struhs (Executive Compensation and Employee Benefits); Andrew Pagliughi (FINRA & Blue Sky); Toby Chun and Tim Mulvihill (Environmental); and Chandler Gerard-Reimer (Intellectual Property).