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The company

Aspen Aerogels, Inc.

ASPN · NYSE

MaterialsChemicalsLeading

ASPN stood above a rising 150-day average in 19 of the last 52 weekly readings, including each of the last 17 weeks. It is 7.0% above that average now. Chemicals: 25% of its 85 stocks in an uptrend (−1 points in four weeks); Materials: 18% (−6 points in four weeks).

SEC filings

Statistics

Rotation: Leading
Weeks in an uptrend: 17 in a row
Industry in uptrend: 25% -1 in 4 wk
Insider buys, 12 months: $0
Insider sales, 12 months: $116.4M
Officials’ trades on record: 3
Institutions holding: 173 (+15)

In the rotation

Each square a week: lit when it closed above a rising 150-day average. 19 of 52 weeks.

20 Apr – 19 Oct

Chemicals: A minority of its stocks are in an uptrend and the share has held steady. Materials: Few of its stocks are in an uptrend and the share has been slipping.

Money in and out

1 Nov 2024 – 1 Oct 2026

Open-market buys above the line and sales below, in dollars.

Congress and officials

3 disclosed lines: House 3, Senate 0, executive 0; 1 people.

Who	Did	Amount	Traded
Debbie Wasserman Schultz House: U.S. House ClerkFL23	sold	$1k–$15k	22 Nov 2017filed 29 Nov 2017
Debbie Wasserman Schultz House: U.S. House ClerkFL23	bought	$1k–$15k	19 Sep 2016filed 18 Oct 2016
Debbie Wasserman Schultz House: U.S. House ClerkFL23	boughtdependent child	$1k–$15k	27 Apr 2016filed 6 Jul 2016

Insiders

Buy orders, 12 months0

Sale orders, 12 months2

Buyers · sellers0 · 2

Who	Did	Shares	Traded
Wood River Capital, LlcOther	sold	12,280,426at $4.73	23 Sep 2026filed 24 Sep 2026

Lines filed since 2 January 2026, newest first; every insider’s older lines are on their own page.

Institutions

Holders173+15 on the quarter

New · exited37 · 23

Reported value$463.0M

Quarter to 30 Jun 2026, against 31 Mar 2026; newest filing 31 Aug 2026.

Manager	Shares	Change
KIM, LLCunchanged · filed 13 Aug 2026	12,280,426$77.9M	00.0%
BlackRock, Inc.added · filed 7 Aug 2026	5,277,148$33.5M	+534,072+11.3%
OAKTOP CAPITAL MANAGEMENT II, L.P.unchanged · filed 7 Aug 2026	5,168,674$32.8M	00.0%
VANGUARD CAPITAL MANAGEMENT LLCadded · filed 13 Aug 2026	3,539,271$22.4M	+103,115+3.0%
NEEDHAM INVESTMENT MANAGEMENT LLCreduced · filed 14 Aug 2026	3,260,800$20.7M	-1,257,975−27.8%
George Kaiser Family Foundationunchanged · filed 12 Aug 2026	3,167,322$20.1M	00.0%
STATE STREET CORPadded · filed 7 Aug 2026	2,559,495$16.2M	+238,768+10.3%
AMERICAN CENTURY COMPANIES INCadded · filed 12 Aug 2026	2,510,042$15.9M	+1,262,259+101.2%
JACOBS LEVY EQUITY MANAGEMENT, INCadded · filed 14 Aug 2026	2,058,083$13.0M	+839,304+68.9%
AMERIPRISE FINANCIAL INCadded · filed 14 Aug 2026	1,821,295$11.5M	+314,916+20.9%