Filer Snapshot

Robert Quartermain

CIK 0001238270. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.

Entity type

Individual

Total filings

11

Latest filing

12 Feb 2026

Industry

n/a

Filing-backed research brief

Start with the SEC data that changes for this CIK

Latest signal: 13D/G stake for DTRC. Each card links back to the PortfolioSavvy page where the filing evidence is closest.

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Largest parsed holding

—

Populates from the latest parsed 13F information table.

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13D/G large stake

DTRC

31 Dec 2025 · 7.4% ownership

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Source: SEC Schedule 13D/G

SCHEDULE 13G/A filed on 12 Feb 2026 for CIK 0001238270.

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Ownership signals CIK-linked ownership evidence from parsed SEC filings. 1 signal
Parsed SEC ownership signals

Parsed SEC ownership coverage

These bars compare filing-backed value available in each disclosure family. Read them as separate lenses, not as one combined ownership total.

Forms 3/4/5 positions$45.06M

Reporting-owner positions with enough filing detail to estimate value.

Forms 3/4/5 position value

3/4/5
$45.06M

Estimated from parsed Forms 3/4/5 when filings include enough share and price data.

Largest linked holdings

Largest issuer positions linked to this CIK across parsed 13F, 13D/G, and Forms 3/4/5 records.

DC

Largest active 13G stakes

Passive or institutional large-stake positions disclosed in parsed Schedule 13G filings.

DTRC
How to read these SEC ownership signals
  • Read each filing family separately: 13F portfolios, 13D/G large stakes, and Forms 3/4/5 owner positions answer different SEC disclosure questions.
  • Open the linked research path when you need the filing, CIK, issuer, or CUSIP trail behind a value.
At a glance Names, identifiers, and filing context for this profile. 1 identity field
Business address
Dakota Territory Resource Corp, 141 Glendale Dr, Lead, SD, 57754

Filer intelligence

What SEC filings say about Robert Quartermain

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

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Quick read

  • 1 recent 13D/G stake row found; top row is DTRC at 7.4% ownership.
  • Forms 3/4/5 show insider context for DC worth $45.06M.

SEC source mix

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

XML parsed
13F portfolio No rows yet

Quarterly institutional portfolio holdings.

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13D/G stakes 1 rows

Beneficial ownership and large-stake disclosures.

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Forms 3/4/5 2 rows

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

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13D/G large-stake context

DTRC

31 Dec 2025 · Common stock, par value $0.001 per share

7.4%
Issuer page 13D/G history

Forms 3/4/5 insider context

DC

13 Apr 2026 · CHIEF EXECUTIVE OFFICER

$45.06M
Issuer page Owner page

DTRC

31 Mar 2022

Issuer page Owner page

Latest update

What changed recently for Robert Quartermain

Ownership report updated

Latest ownership report period: 13 Apr 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

15 Apr 2026

Page type

Ownership filings

Latest period

13 Apr 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 15 Apr 2026.

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SEC filing record

CIK 0001238270 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
11
First seen
04 Apr 2022
Latest filing
12 Feb 2026
Entity
Individual

Observed form types

3 4 SCHEDULE 13G/A

CIK-linked evidence first

Robert Quartermain SEC filings Robert Quartermain 13D/G history Robert Quartermain owner filings Open SEC filing index

Latest Filings

Showing the latest 11 of 11 SEC filings for Robert Quartermain.

SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date
12 Feb 2026
Reporting date
Not listed
SEC evidence
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4

4 filing

Filing date
30 Jan 2026
Reporting date
29 Jan 2026
SEC evidence
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4

4 filing

Filing date
23 Jan 2026
Reporting date
23 Jan 2026
SEC evidence
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SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date
13 Feb 2025
Reporting date
Not listed
SEC evidence
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4

4 filing

Filing date
12 May 2023
Reporting date
11 May 2023
SEC evidence
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4

4 filing

Filing date
03 Mar 2023
Reporting date
01 Mar 2023
SEC evidence
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4

4 filing

Filing date
07 Sep 2022
Reporting date
02 Sep 2022
SEC evidence
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4

4 filing

Filing date
06 Jun 2022
Reporting date
03 Jun 2022
SEC evidence
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4

4 filing

Filing date
13 Apr 2022
Reporting date
13 Apr 2022
SEC evidence
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4

4 filing

Filing date
04 Apr 2022
Reporting date
31 Mar 2022
SEC evidence
Open document Open filing
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3

3 filing

Filing date
04 Apr 2022
Reporting date
31 Mar 2022
SEC evidence
Open document Open filing
Next action
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