ASPN · Aspen Aerogels, Inc.

The explosion at Aspen Aerogels' East Providence manufacturing facility on April 8, 2026, has led to a complete halt in operations that persists as of the filing date, April 21, 2026. Preliminary findings point to a specific high-temperature oven as the origin, with the investigation still underway in coordination with authorities. This incident damaged production space, posing risks to the Company's ability to manufacture its full product array, including PyroThin® for EV thermal management and Cryogel®/Pyrogel® for energy infrastructure, potentially disrupting customer demand fulfillment. All eleven affected employees were released after evaluation, indicating no lasting personnel impact. The Company has promptly initiated claims under its business interruption and property damage insurance policies, which could mitigate financial strain, though recovery timelines remain uncertain. Investors should note the forward-looking intent to resume operations, but actual outcomes depend on investigation results, repair scope, and regulatory approvals. A detailed assessment of business, operational, and financial impacts will follow in the fiscal 2026 first quarter earnings release in early May, highlighting potential effects on near-term performance amid the Company's focus on sustainability and electrification markets.