Welcome to our dedicated page for ASPEN AEROGELS SEC filings (Ticker: ASPN), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Aspen Aerogels, Inc. filings document the company's aerogel technology business, operating results and material corporate events. Recent Forms 8-K cover quarterly and annual financial results, Regulation FD disclosures, business developments, manufacturing-facility updates, and amendments to the MidCap Loan Facility and related credit-party obligations.
The filing record also includes proxy materials describing governance, board and compensation matters, executive employment arrangements, equity awards and shareholder voting items. Aspen's disclosures connect its capital structure and credit covenants with operations in Energy Industrial and Thermal Barrier products, including PyroThin, Cryogel and Pyrogel applications.
Aspen Aerogels Chief Commercial Officer Corby C. Whitaker reported a routine tax-related share disposition. On the vesting of Restricted Stock Units, 1,924 shares of Common Stock were withheld by the company at $3.22 per share to cover minimum statutory tax obligations.
After this withholding, Whitaker directly holds 205,315 shares of Common Stock, which the footnotes clarify represent 128,170 shares plus 77,145 RSUs. This event reflects compensation and tax mechanics rather than an open-market trade.
Aspen Aerogels CFO & Treasurer Grant Douglas Thoele reported a routine tax-withholding transaction. On this Form 4, 590 shares of common stock were withheld at $3.22 per share to cover minimum statutory taxes on the vesting of restricted stock units.
After this non-market disposition, Thoele is shown as holding 77,732 common-equivalent units, consisting of 10,111 shares of common stock and 67,621 RSUs. The event reflects compensation-related vesting mechanics rather than an open-market sale.
Aspen Aerogels President and CEO Donald R. Young reported a routine tax-related share disposition. On the vesting of Restricted Stock Units (RSUs), 4,275 shares of Common Stock were withheld by the company to cover minimum statutory tax obligations, at $3.22 per share.
After this withholding, Young holds 637,834 equity-based units, consisting of 438,349 shares of Common Stock and 199,485 RSUs. This event reflects compensation-related tax settlement rather than an open-market sale.
ASPEN AEROGELS INC Chief Operating Officer Gregg Landes reported a routine tax-related share disposition. The company withheld 1,924 shares of common stock at $3.22 per share to cover minimum statutory taxes on vesting of restricted stock units. After this withholding, Landes holds 102,931 equity-linked units, including 26,317 shares of common stock and 76,614 restricted stock units.
Aspen Aerogels President and CEO Donald R. Young reported equity compensation grants and related tax withholding transactions. On March 4, he acquired 156,716 shares of Common Stock and 212,249 stock options at a grant price of $0.00 per share through awards.
The restricted stock units vest in three equal installments on March 4, 2027, March 4, 2028, and March 4, 2029, and the options follow the same one-third annual vesting schedule. On March 5, 8,618 shares of Common Stock at $3.27 per share were withheld by the company to cover minimum statutory taxes on RSU vesting, leaving him with 642,109 directly held shares, including 430,387 shares of Common Stock and 211,722 RSUs.
Aspen Aerogels senior vice president Gregg Landes reported equity compensation awards and related tax withholding transactions. On March 4, 2026, he received 57,462 restricted stock units and 77,824 stock options that each vest in three equal annual installments on March 4, 2027, 2028 and 2029. On March 5, 3,814 shares of common stock at $3.27 per share were withheld to cover minimum statutory taxes on RSU vesting. After these movements, he directly holds 22,735 shares of common stock, 82,120 RSUs and 77,824 stock options.
DEEGAN GLENN E. reported acquisition or exercise transactions in this Form 4 filing.
Aspen Aerogels chief accounting officer and general counsel Glenn E. Deegan received new equity awards. On March 4, 2026, he was granted 75,171 stock options and 55,503 restricted stock units (RSUs) at no cash cost.
Each RSU represents one share of common stock when it vests. Both the RSUs and options vest in three equal installments on March 4, 2027, March 4, 2028 and March 4, 2029, aligning compensation with longer-term company performance.
Aspen Aerogels SVP Corby C. Whitaker reported equity compensation changes and related tax withholding. On March 4, 2026, he acquired 57,462 shares of Common Stock as a grant and 77,824 stock options, both at a stated price of $0.0000 per share.
The options vest in three equal annual installments on March 4, 2027, March 4, 2028, and March 4, 2029. Related RSUs follow the same vesting schedule. On March 5, 2026, 3,907 shares of Common Stock were disposed of at $3.27 per share to cover minimum statutory tax withholding on RSU vesting, leaving 207,239 Common shares held directly.
Aspen Aerogels Inc. Chief Accounting Officer P. Daniel Santhosh reported a small share disposal related to taxes rather than an open‑market sale. On the vesting of Restricted Stock Units (RSUs), 986 shares of common stock were withheld by the company at $3.27 per share to satisfy minimum statutory tax withholding requirements.
After this tax-withholding disposition, Santhosh’s holdings total 15,330 equity interests, consisting of 5,593 shares of common stock and 9,737 RSUs. This type of transaction is routine for executives when RSUs vest and does not reflect a discretionary buy or sell decision.
Aspen Aerogels CFO & Treasurer Grant Douglas Thoele reported new equity awards and a small tax-related share disposition. On March 4, 2026, he received 55,298 shares of Common Stock as a grant and 74,893 stock options with a right to buy additional shares at an exercise price of $0.0000 per share. The options and related Restricted Stock Units (RSUs) vest in three equal annual installments on March 4, 2027, March 4, 2028, and March 4, 2029. On March 5, 2026, 2,368 shares of Common Stock were disposed of at $3.27 per share to satisfy minimum statutory tax withholding on RSU vesting. After these transactions, he directly owned 78,322 shares of Common Stock, which the footnotes state includes 9,014 shares and 69,308 RSUs.