Stock Trading Canary

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

← United States · Coverage record

US · SEC FORM 4

ASP Isotopes Inc.

ASPI · Nasdaq · CIK 0001921865 · Basic Materials · Specialty Chemicals

INSIDER SIGNAL

No active buy signal

1 qualifying P purchase group
in the current 180-day scoring window

20 Form 4 transaction lines observed in the same window
15 sales · 4 option, withholding, award, gift or other lines

Last qualifying purchase2026-09-28 · Ryan Robert John Andrew · $21.6K

WHY NO ACTIVE SIGNAL?

Purchase activityPresent
Recent buying1 qualifying line group(s)
Recent salesModerate
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
Mann Paul ElliotChairman and CEO
○▼▼▼▼▼▼
Ainscow RobertCOO
○▼▼▼
Ainscow Donald GeorgeEVP, Gen Counsel, Secretary
○▼▼
Kiessling HeatherChief Financial Officer
○▼
Wider ToddDirector
▼▼
Ryan Robert John AndrewDirector
●
● Purchase▼ Sale○ Other

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

Purchase breadth & concentration

QUALIFYING BUYERS1
PURCHASE CONCENTRATION100%Largest buyer: Ryan Robert John Andrew · $21.6K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-09-28–2026-09-28

Roles in the peak window: Director. Concentration uses priced qualifying P lines only and does not change the saved score.

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: 2026-09-28 · Ryan Robert John Andrew.

Recent Form 4 activity

1Purchases
27Sales
9Other Form 4 lines
30SEC filings · 365 days
BUYING1 qualifying P line(s) · 180 days
SELLING15 sale line(s) · context only
OTHER4 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
-25.9%
3M
-43.5%
6M
-32.8%
12M
-68.2%

Volatility & liquidity

Volatility
112.0%
Beta
—
Avg daily value
USD 11.5M

Valuation

Market cap
USD 356.3M
P/E
—

Fundamentals

Profit margin
-670.2%
ROE
-78.3%
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: 2026-05-20 · Status: PASS

Short interest

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

Shares short
26,455,716
Previous report
26,069,790
Avg daily volume
4,984,468
Days to cover
5.3

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
2026-09-28Ryan Robert John AndrewPurchase (P)Common Stock8,000USD 2.70USD 21,600SEC filing ↗
2024-07-15Mann Paul ElliotPurchase (P)Common Stock39,984USD —USD —SEC filing ↗
2024-07-15Ainscow RobertPurchase (P)Common Stock19,992USD —USD —SEC filing ↗
2024-07-10AK Jensen Investment Management LtdPurchase (P)Common Stock61,849USD 3.40USD 210,287SEC filing ↗
2024-07-09AK Jensen Investment Management LtdPurchase (P)Common Stock30,000USD 3.05USD 91,500SEC filing ↗
2024-07-08AK Jensen Investment Management LtdPurchase (P)Common Stock, par value $0.01 per share ("Common Stock")70,000USD 3.05USD 213,500SEC filing ↗
2024-04-30Ryan Robert John AndrewPurchase (P)Common Stock16,234USD 3.43USD 55,740SEC filing ↗
2024-04-29Ryan Robert John AndrewPurchase (P)Common Stock4,313USD 3.20USD 13,802SEC filing ↗
2024-04-26Ryan Robert John AndrewPurchase (P)Common Stock5,000USD 3.48USD 17,400SEC filing ↗
2024-04-25Ryan Robert John AndrewPurchase (P)Common Stock9,500USD 3.42USD 32,450SEC filing ↗
2024-01-29Ryan Robert John AndrewPurchase (P)Common Stock15,596USD 2.35USD 36,651SEC filing ↗
2024-01-25Ryan Robert John AndrewPurchase (P)Common Stock100USD 2.54USD 254SEC filing ↗
2024-01-17Ryan Robert John AndrewPurchase (P)Common Stock100USD 1.91USD 191SEC filing ↗
2024-01-16Ryan Robert John AndrewPurchase (P)Common Stock2,550USD 1.92USD 4,896SEC filing ↗
2023-10-26Wider ToddPurchase (P)Common Stock94,844USD 0.96USD 91,050SEC filing ↗

Form 4 evidence

37 transaction lines in the latest 365-day window; 124 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-28Ryan Robert John AndrewPurchase (P)Common Stock8,000USD 2.70USD 21,600SEC filing ↗
2026-09-08Ainscow RobertSale (S)Common Stock8,438USD 4.29USD 36,199SEC filing ↗
2026-09-04Mann Paul ElliotSale (S)Common Stock83,759USD 4.10USD 343,412SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-28Ryan Robert John AndrewPurchase (P)Common Stock8,000USD 2.70USD 21,600SEC filing ↗
2026-09-08Ainscow RobertSale (S)Common Stock8,438USD 4.29USD 36,199SEC filing ↗
2026-09-04Mann Paul ElliotSale (S)Common Stock83,759USD 4.10USD 343,412SEC filing ↗
2026-09-03Mann Paul ElliotSale (S)Common Stock83,758USD 3.92USD 328,331SEC filing ↗
2026-09-02Mann Paul ElliotSale (S)Common Stock83,758USD 3.91USD 327,494SEC filing ↗
2026-09-02Ainscow RobertSale (S)Common Stock25,000USD 3.91USD 97,750SEC filing ↗
2026-09-02Ainscow Donald GeorgeSale (S)Common Stock23,678USD 3.89USD 92,107SEC filing ↗
2026-07-01Kiessling HeatherSale (S)Common Stock23,124USD 6.28USD 145,219SEC filing ↗
2026-06-30Ainscow Donald GeorgeSale (S)Common Stock100,000USD 6.14USD 614,000SEC filing ↗
2026-06-30Wider ToddSale (S)Common Stock50,000USD 6.12USD 306,000SEC filing ↗
2026-06-30Gorley MichaelSale (S)Common Stock30,000USD 6.27USD 188,100SEC filing ↗
2026-06-29Wider ToddSale (S)Common Stock50,000USD 6.25USD 312,500SEC filing ↗
2026-06-08Ainscow RobertSale (S)Common Stock8,438USD 7.00USD 59,066SEC filing ↗
2026-06-03Mann Paul ElliotSale (S)Common Stock83,759USD 7.76USD 649,970SEC filing ↗
2026-06-02Mann Paul ElliotSale (S)Common Stock83,758USD 8.29USD 694,354SEC filing ↗
2026-06-01Mann Paul ElliotSale (S)Common Stock83,758USD 7.88USD 660,013SEC filing ↗
2026-05-28Mann Paul ElliotAward / grant (A)Common Stock2,233,555USD —USD —SEC filing ↗
2026-05-28Kiessling HeatherAward / grant (A)Common Stock840,000USD —USD —SEC filing ↗
2026-05-28Ainscow RobertAward / grant (A)Common Stock800,000USD —USD —SEC filing ↗
2026-05-28Ainscow Donald GeorgeAward / grant (A)Common Stock400,000USD —USD —SEC filing ↗
2026-04-16Moore DuncanSale (S)Common Stock11,642USD 5.21USD 60,655SEC filing ↗
2026-04-16Ainscow RobertSale (S)Common Stock22,500USD 5.21USD 117,225SEC filing ↗
2026-04-15Kiessling HeatherSale (S)Common Stock23,124USD 5.48USD 126,720SEC filing ↗
2026-03-06Ainscow RobertSale (S)Common Stock8,438USD 5.44USD 45,903SEC filing ↗
2026-03-02Mann Paul ElliotSale (S)Common Stock162,153USD 5.44USD 882,112SEC filing ↗
2025-12-18Kiessling HeatherSale (S)Common Stock80,000USD 5.80USD 464,000SEC filing ↗
2025-12-18Wider ToddAward / grant (A)Common Stock36,548USD —USD —SEC filing ↗
2025-12-18Ryan Robert John AndrewAward / grant (A)Common Stock36,548USD —USD —SEC filing ↗
2025-12-18Hunter Ralph L. JRAward / grant (A)Common Stock36,548USD —USD —SEC filing ↗
2025-12-18Gorley MichaelAward / grant (A)Common Stock36,548USD —USD —SEC 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 · —
TickerASPI
CIK0001921865
SectorBasic Materials
IndustrySpecialty Chemicals Yahoo Finance
SEC SIC2890 Miscellaneous Chemical Products
ExchangeNasdaq

Data coverage

Local Form 4 history124 transaction lines from 2022-11-15 to 2026-09-28
25 P purchase lines · 42 S sale lines · 57 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.