Filer Snapshot

Duncan Moore

CIK 0001888265. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.

Entity Type

Individual

Total Filings

15

Latest Filing

17 Apr 2026

Industry

n/a

Filing-backed research brief

Start with the SEC data that changes for this CIK

Latest signal: Forms 3/4/5 owner position for ASPI. Each card links back to the PortfolioSavvy page where the filing evidence is closest.

Open owner activity Save page

Largest parsed holding

—

Populates from the latest parsed 13F information table.

Open holding

13D/G large stake

—

No recent parsed 13D/G stake row for this CIK.

Browse 13D/G

Save this filer page

Create a free account to keep this page in your watchlists. After verification, we will save it automatically and open your saved research list.

Create free account and save this filer Already have an account? Sign in and save it
Source: SEC Forms 3/4/5

4 filed on 17 Apr 2026 for CIK 0001888265.

View Source Filing
Identity
Business address
C/O Asp Isotopes Inc., 601 Pennsylvania Avenue Nw, Suite 900, Washington, Dc, DC, 20004
SEC ownership signals
Filing-backed coverage

Insider holdings value

$5.63M

Parsed Forms 3/4/5 holdings where value can be estimated.

Top reported ownership holdings
ASPI GHRS

Filer intelligence

What SEC filings say about Duncan Moore

A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.

Save filer

Quick read

  • Forms 3/4/5 show insider context for ASPI worth $5.44M.

SEC source mix

Counts show available parsed rows, not one combined ownership total.

XML parsed
13F portfolio No rows yet

Quarterly institutional portfolio holdings.

Open
13D/G stakes No rows yet

Beneficial ownership and large-stake disclosures.

Open
Forms 3/4/5 3 rows

Officer, director, and 10% owner holdings or transactions.

Open

Forms 3/4/5 insider context

ASPI

12 Nov 2025

$5.44M
Issuer page Owner page

GHRS

18 Mar 2026

$195.5K
Issuer page Owner page

ALLR

20 Dec 2021

Issuer page Owner page

Latest update

What changed recently for Duncan Moore

Ownership report updated

Latest ownership report period: 18 Mar 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

17 Apr 2026

Page type

Ownership filings

Latest period

18 Mar 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 17 Apr 2026.

Open ownership filings Browse recent public updates

SEC filing record

CIK 0001888265 filing coverage

Start with this filing record, then use the linked ownership pages when parsed 13F, 13D/G, Forms 3/4/5, or facts data exists for this CIK.

SEC filings
15
First seen
22 Dec 2021
Latest filing
17 Apr 2026
Entity
Individual

Observed form types

4 144 3

Primary evidence

Open SEC filing index Duncan Moore SEC filings Duncan Moore owner filings

Latest Filings

Recent SEC filings for Duncan Moore with direct links to document and filing folders.

4 File 001-41555

FORM 4

Filing date
17 Apr 2026
Reporting date
12 Nov 2025
SEC evidence
Open document Open filing
Next action
Verify source filing
144

144 filing

Filing date
17 Apr 2026
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
3 File 001-40530

FORM 3

Filing date
17 Apr 2026
Reporting date
18 Mar 2026
SEC evidence
Open document Open filing
Next action
Verify source filing
4 File 001-41555

FORM 4

Filing date
03 Sep 2025
Reporting date
29 Aug 2025
SEC evidence
Open document Open filing
Next action
Verify source filing
144

144 filing

Filing date
29 Aug 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
4 File 001-41555

FORM 4

Filing date
11 Dec 2024
Reporting date
09 Dec 2024
SEC evidence
Open document Open filing
Next action
Verify source filing
4 File 001-41555

FORM 4

Filing date
21 Nov 2024
Reporting date
20 Nov 2024
SEC evidence
Open document Open filing
Next action
Verify source filing
4 File 001-41555

FORM 4

Filing date
30 Oct 2023
Reporting date
10 Aug 2023
SEC evidence
Open document Open filing
Next action
Verify source filing
4 File 001-41555

FORM 4

Filing date
03 Jul 2023
Reporting date
29 Jun 2023
SEC evidence
Open document Open filing
Next action
Verify source filing
4 File 001-41555

FORM 4

Filing date
19 May 2023
Reporting date
18 May 2023
SEC evidence
Open document Open filing
Next action
Verify source filing
4 File 001-41555

FORM 4

Filing date
16 May 2023
Reporting date
10 May 2023
SEC evidence
Open document Open filing
Next action
Verify source filing
4 File 001-41555

FORM 4

Filing date
11 Apr 2023
Reporting date
06 Apr 2023
SEC evidence
Open document Open filing
Next action
Verify source filing
4 File 001-41555

4 filing

Filing date
16 Nov 2022
Reporting date
15 Nov 2022
SEC evidence
Open document Open filing
Next action
Verify source filing
3 File 001-41555

OWNERSHIP DOCUMENT

Filing date
14 Nov 2022
Reporting date
09 Nov 2022
SEC evidence
Open document Open filing
Next action
Verify source filing
3 File 001-41160

3 filing

Filing date
22 Dec 2021
Reporting date
20 Dec 2021
SEC evidence
Open document Open filing
Next action
Verify source filing
We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. Manage preferences to update or revoke optional consent for future visits. For more information, see our Privacy Policy .