February 25, 2026 ASPEN AEROGELS Operational momentum supported by a strengthened balance sheet Q4 & FY 2025 FINANCIAL RESULTS CALL Disclaimer on Forward Looking Statements This presentation and any related discussion contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 that involve risks and uncertainties that could cause actual results to be materially different from historical results or from any future results expressed or implied by such forwa ...

Financial Data and Key Metrics Changes - The company reported Q2 revenue of $78 million, reflecting a 34% year-over-year decline and a nearly flat trend quarter-over-quarter [14] - Adjusted EBITDA for Q2 was $9.7 million, nearly doubling quarter-over-quarter despite a $700,000 decrease in revenues [17] - The net loss for Q2 was $5.2 million, with an adjusted operating expense run rate of $24.6 million [17] Business Line Data and Key Metrics Changes - The Energy Industrial segment's revenue decreased significantly to $22.8 million, a 38% year-over-year decline, attributed to inventory rebalancing and a lack of new projects [15] - The EV thermal barrier business generated $55.2 million in revenue, a 32% decrease year-over-year, aligning with lower vehicle production schedules [15] - Gross profit margins for the Energy Industrial business were maintained at 36%, while the EV thermal barrier business had margins of 31%, which is below the target of 35% [16] Market Data and Key Metrics Changes - The subsea market has shown a significant slowdown, with historical revenue cycling between $5 million and $15 million per year, but averaging approximately $30 million per year in 2023 and 2024 [10] - The company anticipates revenue growth and high gross profit margins in 2026 and beyond, despite current challenges in the energy sector [12] Company Strategy and Development Direction - The core objective is to build a strong, profitable, and capital-efficient business, focusing on streamlining operations and optimizing cost structures [8] - The company is well-positioned to serve US-based OEMs, especially in the EV market, despite regulatory headwinds [9] - Future growth is expected to be driven by project work in the Energy Industrial segment and stable demand for EV thermal barrier products [11] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in the ability to adapt and innovate in a turbulent global economy, emphasizing a resilient and growth-oriented business model [26] - The outlook for the second half of the year includes expected revenue of $140 million to $160 million, translating to a total annual revenue of $297 million to $317 million [21] - The company expects to generate approximately double the adjusted EBITDA in the second half compared to the first half [21] Other Important Information - The CFO transition is underway, with Grant Thaley set to take over at the end of Q3 [6] - The company has removed approximately $65 million in costs, bringing operating expenses back to 2022 levels [8] - Cash and equivalents at the end of the quarter stood at $168 million, positioning the company well for future operations without needing additional capital [20] Q&A Session Summary Question: Update on Energy Industrial segment and distributor destocking - Management acknowledged ongoing destocking and lower project revenue, but expressed confidence in future growth as distributor inventories are worked through [32][33] Question: Outlook for Pyrothin and impact of tax credit expiration - Management remains optimistic about Q4 sales, citing GM's market share gains and stable demand despite the tax credit expiration [37] Question: Design activity with new OEMs and future revenue - Management noted ongoing quoting activity and expected incremental revenues from key OEMs like Stellantis and Daimler in the coming years [42][44] Question: Revenue buildup potential for Thermal and quoting activity - Management confirmed a path to achieving previously discussed revenue targets, with a focus on prismatic cells and ongoing quoting activity [86][88] Question: Impact of Mercedes' EV plans on revenue - Management indicated potential for incremental volume from the ACC partnership with Mercedes, particularly in the European market [94] Question: Lead times for orders in subsea and LNG - Management clarified that subsea projects typically have a lead time of one to two quarters, while LNG projects may require two to four quarters [107]