Landes Gregg 4

4 · ASPEN AEROGELS INC · Filed Mar 6, 2026

AI-generated summary of this filing

Updated Mar 6, 2026

Aspen Aerogels (ASPN) SVP Landes Gregg Receives RSU & Option Awards

What Happened

Landes Gregg, Senior Vice President, Operations and Strategic Development at Aspen Aerogels (ASPN), received equity awards on March 4, 2026: 57,462 Restricted Stock Units (RSUs) and a derivative award of 77,824 option/award units (total 135,286 units). The RSUs/options were granted at $0.00 per unit (standard grant).
On March 5, 2026, 3,814 shares were disposed/withheld at $3.27 per share (total value $12,472) to satisfy minimum statutory tax withholding requirements.

Key Details

Transaction dates: grants on 2026-03-04; tax withholding on 2026-03-05. Filing date: 2026-03-06 (covers Mar 4–5 transactions).
Prices reported: grants at $0.00 (award); withholding at $3.27/share (total ~$12,472).
Reported holdings (per filing footnote): 22,735 shares of Common Stock and 82,120 RSUs (see footnote F3).
Vesting: RSUs vest one‑third on each of Mar 4, 2027, 2028 and 2029 (footnote F1). Options (derivative award) vest on the same one‑third per year schedule (footnote F4).
The 3,814‑share disposition is a tax‑withholding event, not a market sale (footnote F2).
Filing appears timely (filed two days after the primary grant dates).

Context

These are standard compensation grants (RSUs and options) that represent future economic interest if/when they vest; RSUs convert into one share per unit upon vesting.
The small share disposition was for statutory tax withholding and should not be read as a directional bet by the insider.
No open‑market purchases or large outright sales were reported in this filing.

Form 4

Period: 2026-03-04

Chief Operating Officer

Transactions

Award
Common Stock
[F1]
2026-03-04+57,462→ 108,669 total
Tax Payment
Common Stock
[F2][F3]
2026-03-05$3.27/sh−3,814$12,472→ 104,855 total
Award
Stock Options (Right to Buy)
[F4]
2026-03-04+77,824→ 77,824 total
Exercise: $3.35Exp: 2036-03-04→ Common Stock (77,824 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 22,735 shares of Common Stock and 82,120 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

2 files