Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

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US · SEC FORM 4

ASPEN AEROGELS INC

ASPN · NYSE · CIK 0001145986 · Industrials · Specialty Chemicals

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

8 Form 4 transaction lines observed in the same window
1 sales · 7 option, withholding, award, gift or other lines

Last qualifying purchase2025-05-12 · Young Donald R · $107.0K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesLow
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
NOGLOWS WILLIAM PDirector
○○
Mitchell Steven RDirector
○
SWEETNAM JAMES EDirector
○
Kool KathleenDirector
○
Robinson CariDirector
○
Koch, Inc.; Wood River Capital, LLCOther; TenPercentOwner
▼
● Purchase▼ Sale○ Other

Showing the six most active owners; 1 additional owner(s) remain in Form 4 evidence.

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2025-05-12 · Young Donald R.

Recent Form 4 activity

0Purchases
2Sales
21Other Form 4 lines
19SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING1 sale line(s) · context only
OTHER7 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
+16.3%
3M
+9.1%
6M
+50.5%
12M
-30.1%

Volatility & liquidity

Volatility
87.9%
Beta
—
Avg daily value
USD 6.4M

Valuation

Market cap
USD 467.2M
P/E
—

Fundamentals

Profit margin
-143.7%
ROE
-165.4%
Industry
Specialty Chemicals

Market data

Price data up to: 2026-10-08 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · From SEC filings: Market cap, Profit margin, ROE · Fiscal year ended: 2025-12-31 · Market cap is the shares outstanding stated on the filing cover multiplied by the latest close. Share count date: 2026-08-04 · Status: PASS

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
6,101,632
Previous report
9,064,528
Avg daily volume
1,164,371
Days to cover
5.2

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2025-05-12Young Donald RPurchase (P)Common Stock20,000USD 5.35USD 107,000SEC filing ↗
2023-09-07Mitchell Steven RPurchase (P)Common Stock7,541USD 6.50USD 49,016SEC filing ↗
2023-09-05Mitchell Steven RPurchase (P)Common Stock50,000USD 6.17USD 308,500SEC filing ↗
2023-08-22Noetzel Mark LPurchase (P)Common Stock4,000USD 5.65USD 22,600SEC filing ↗
2023-08-08Young Donald RPurchase (P)Common Stock25,000USD 6.83USD 170,750SEC filing ↗
2022-12-06SWEETNAM JAMES EPurchase (P)Common Stock2,700USD 11.30USD 30,510SEC filing ↗
2022-11-30KOCH INDUSTRIES INC; Wood River Capital, LLCPurchase (P)Common Stock10,526,316USD 9.50USD 100,000,002SEC filing ↗
2022-05-12Young Donald RPurchase (P)Common Stock5,000USD 14.63USD 73,150SEC filing ↗
2022-03-28KOCH INDUSTRIES INCPurchase (P)Common Stock1,791,986USD 27.90USD 49,996,409SEC filing ↗
2022-03-22Gervis Robert M.Purchase (P)Common Stock135,870USD 33.12USD 4,500,014SEC filing ↗
2020-03-09Young Donald RPurchase (P)Common Stock2,000USD 7.18USD 14,360SEC filing ↗

Form 4 evidence

23 transaction lines in the latest 365-day window; 336 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-30DEEGAN GLENN E.Tax withholding (F)Common Stock1,143USD 5.48USD 6,264SEC filing ↗
2026-09-23Koch, Inc.; Wood River Capital, LLCSale (S)Common Stock12,280,426USD 4.73USD 58,086,415SEC filing ↗
2026-06-23NOGLOWS WILLIAM POption exercise / conversion (M)Common Stock14,799USD 4.75USD 70,295SEC filing ↗
Show recent Form 4 evidence (23 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-30DEEGAN GLENN E.Tax withholding (F)Common Stock1,143USD 5.48USD 6,264SEC filing ↗
2026-09-23Koch, Inc.; Wood River Capital, LLCSale (S)Common Stock12,280,426USD 4.73USD 58,086,415SEC filing ↗
2026-06-23NOGLOWS WILLIAM POption exercise / conversion (M)Common Stock14,799USD 4.75USD 70,295SEC filing ↗
2026-05-13SWEETNAM JAMES EAward / grant (A)Common Stock10,370USD 0.00USD 0SEC filing ↗
2026-05-13Robinson CariAward / grant (A)Common Stock10,370USD 0.00USD 0SEC filing ↗
2026-05-13NOGLOWS WILLIAM PAward / grant (A)Common Stock10,370USD 0.00USD 0SEC filing ↗
2026-05-13Mitchell Steven RAward / grant (A)Common Stock10,370USD 0.00USD 0SEC filing ↗
2026-05-13Kool KathleenAward / grant (A)Common Stock10,370USD 0.00USD 0SEC filing ↗
2026-03-08Young Donald RTax withholding (F)Common Stock4,275USD 3.22USD 13,766SEC filing ↗
2026-03-08Whitaker Corby CTax withholding (F)Common Stock1,924USD 3.22USD 6,195SEC filing ↗
2026-03-08Thoele Grant DouglasTax withholding (F)Common Stock590USD 3.22USD 1,900SEC filing ↗
2026-03-08Landes GreggTax withholding (F)Common Stock1,924USD 3.22USD 6,195SEC filing ↗
2026-03-05Young Donald RTax withholding (F)Common Stock8,618USD 3.27USD 28,181SEC filing ↗
2026-03-05Whitaker Corby CTax withholding (F)Common Stock3,907USD 3.27USD 12,776SEC filing ↗
2026-03-05Thoele Grant DouglasTax withholding (F)Common Stock2,368USD 3.27USD 7,743SEC filing ↗
2026-03-05Landes GreggTax withholding (F)Common Stock3,814USD 3.27USD 12,472SEC filing ↗
2026-03-05Daniel Santhosh PTax withholding (F)Common Stock986USD 3.27USD 3,224SEC filing ↗
2026-03-04Young Donald RAward / grant (A)Common Stock156,716USD 0.00USD 0SEC filing ↗
2026-03-04Whitaker Corby CAward / grant (A)Common Stock57,462USD 0.00USD 0SEC filing ↗
2026-03-04Thoele Grant DouglasAward / grant (A)Common Stock55,298USD 0.00USD 0SEC filing ↗
2026-03-04Landes GreggAward / grant (A)Common Stock57,462USD 0.00USD 0SEC filing ↗
2026-03-04DEEGAN GLENN E.Award / grant (A)Common Stock55,503USD 0.00USD 0SEC filing ↗
2025-11-13Young Donald RSale (S)Common Stock56,845USD 3.23USD 183,609SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerASPN
CIK0001145986
SectorIndustrials
IndustrySpecialty Chemicals Yahoo Finance
SEC SIC5030 Wholesale-Lumber & Other Construction Materials
ExchangeNYSE

Data coverage

Local Form 4 history336 transaction lines from 2020-02-26 to 2026-09-30
12 P purchase lines · 54 S sale lines · 270 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.