Wood River Capital, LLC → Aspen Aerogels, Inc. ASPN

Stake: — Shares: 0 CUSIP: 04523Y105 Class: Common stock, par value $0.00001 per share

Item 4 — Purpose of Transaction

Item 4 of the Initial Schedule 13D is hereby amended and supplemented as follows: On September 23, 2026, the Reporting Persons disposed of all Public Shares beneficially owned by the Reporting Persons and ceased to be the beneficial owner of any Public Shares. The Reporting Persons do not have any present plans or proposals that relate to or would result in any of the actions specified in Item 4(a) through 4(j) of this Schedule 13D.

Cross-References

Insider Activity (last 365d)

1 transaction

0 buys · 1 sales · 0 awards/exercises

Issuer Cluster

2 13D/G filings on this issuer

1 other filing besides this one

Filer Track Record

4 filings by this filer

3 other filings in the data moat

Short Interest · settle 2026-09-30

DTC 5.24

6,101,632 shares short · -32.7% vs prior

Form 4 Insider Transactions · last 365d

Date	Insider	Role	Type	Shares	Price	Value
2026-09-23	Wood River Capital, LLC	10%+ owner	Sale	12,280,426	$4.73	$58.09M

Other 13D/G Filings on Aspen Aerogels, Inc.

Filed	Form	Filer	Stake	Shares
2024-05-16	SC	Wood River Capital, LLC	—	—	view →

Other Filings by Wood River Capital, LLC

Filed	Form	Issuer	Stake	Shares
2025-01-07	SCHEDULE	FREYR Battery, Inc. /DE/ TE-WT	4.60%	7,167,835	view →
2024-05-16	SC	ASPEN AEROGELS INC ASPN	—	—	view →
2022-12-07	SC	FREYR Battery	—	—	view →

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