Thoele Grant Douglas 4

4 · ASPEN AEROGELS INC · Filed Mar 6, 2026

AI-generated summary of this filing

Updated Mar 6, 2026

Aspen Aerogels (ASPN) CFO Grant Thoele Receives Equity Award

What Happened

Grant Thoele, CFO and Treasurer of Aspen Aerogels (ASPN), received equity awards on 2026-03-04: 55,298 shares reported as acquired (price $0.00) and a derivative award of 74,893 units (price $0.00). These are awards/grants (not open-market purchases).
On 2026-03-05, 2,368 shares were disposed of (withheld) at $3.27 per share to satisfy tax withholding obligations, yielding $7,743. This disposal was a tax withholding, not a market sale for investment reasons.

Key Details

Transaction dates/prices: Grants on 2026-03-04 (55,298 shares @ $0.00; 74,893 derivative units @ $0.00). Tax withholding on 2026-03-05: 2,368 shares @ $3.27 (total $7,743).
Filing: Form 4 filed 2026-03-06 reporting transactions occurring 2026-03-04–03-05 — appears timely.
Shares owned after transaction: Not specified in the provided excerpt of the filing.
Notable footnotes:
- F1: RSUs vest one-third on each of Mar 4, 2027; Mar 4, 2028; and Mar 4, 2029.
- F2: The 2,368-share disposal was shares withheld by the company to satisfy minimum statutory tax withholding on RSU vesting.
- F3: The filing notes representations of 9,014 shares of Common Stock and 69,308 RSUs within the reported amounts.
- F4: Any related options vest one-third on each of Mar 4, 2027/2028/2029 (if applicable).

Context

These transactions are award-based compensation (RSUs/derivatives) — routine for executives and not the same signal as an open-market purchase or sale.
The small share withholding to cover taxes is a common administrative step when RSUs vest and does not necessarily indicate a bearish or bullish view by the insider.

Form 4

Period: 2026-03-04

CFO & Treasurer

Transactions

Award
Common Stock
[F1]
2026-03-04+55,298→ 80,690 total
Tax Payment
Common Stock
[F2][F3]
2026-03-05$3.27/sh−2,368$7,743→ 78,322 total
Award
Stock Options (Right to Buy)
[F4]
2026-03-04+74,893→ 74,893 total
Exercise: $3.35Exp: 2036-03-04→ Common Stock (74,893 underlying)

Footnotes (4)

[F1]Each Restricted Stock Unit ("RSU") represents the right to receive one share of Common Stock upon vesting. The RSUs vest as to one-third of the shares on March 4, 2027, an additional one-third of the shares on March 4, 2028 and the remaining one-third of the shares on March 4, 2029.
[F2]Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of Restricted Stock Units ("RSUs").
[F3]Represents 9,014 shares of Common Stock and 69,308 RSUs.
[F4]The options vest as to one-third of the shares on March 4, 2027, an additional one-third of the shares on March 4, 2028 and the remaining one-third of the shares on March 4, 2029.

Signature

/s/ Glenn Deegan, Attorney-in-Fact|2026-03-06

1 file