Filer Snapshot

Brian F. Sullivan

CIK 0000940454. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.

Entity type

Individual

Total filings

98

Latest filing

13 Nov 2025

Industry

n/a

Filing-backed research brief

Start with the SEC data that changes for this CIK

Latest signal: 13D/G stake for CELC. 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

CELC

30 Sep 2025 · 9.1% ownership

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Source: SEC Schedule 13D/G

SCHEDULE 13G/A filed on 13 Nov 2025 for CIK 0000940454.

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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$114.48M

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

Forms 3/4/5 position value

3/4/5
$114.48M

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.

CELC ENTG

Largest active 13G stakes

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

CELC
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
16305 36 Th Avenue N, Minneapolis, MN, 55446
EDGAR profile Static EDGAR fields kept behind disclosure so the main profile stays readable. 2 profile fields available
Incorporated in
MN
Fiscal year end
31 December

Filer intelligence

What SEC filings say about Brian F. Sullivan

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 CELC at 9.1% ownership.
  • Forms 3/4/5 show insider context for CELC worth $102.72M.

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

CELC

30 Sep 2025 · Common Stock

9.1%
Issuer page 13D/G history

Forms 3/4/5 insider context

CELC

02 Sep 2025 · Chief Executive Officer

$102.72M
Issuer page Owner page

ENTG

19 May 2021

$11.76M
Issuer page Owner page

Latest update

What changed recently for Brian F. Sullivan

New filing available

Latest Schedule 13D/G period: 30 Sep 2025. Open the source-backed page to inspect the fresh filing or facts context.

Update date

13 Nov 2025

Page type

Filer profile

Latest period

30 Sep 2025

Schedule 13D/G context is visible from filings filed on 13 Nov 2025.

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SEC filing record

CIK 0000940454 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
98
First seen
20 Feb 1997
Latest filing
13 Nov 2025
Entity
Individual

Observed form types

SCHEDULE 13G/A 4 SC 13G/A SC 13G 3 4/A

CIK-linked evidence first

Brian F. Sullivan SEC filings Brian F. Sullivan 13D/G history Brian F. Sullivan owner filings Open SEC filing index

Latest Filings

Showing the latest 12 of 76 SEC filings for Brian F. Sullivan.

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SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date
13 Nov 2025
Reporting date
Not listed
SEC evidence
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4 File 001-38207

4 filing

Filing date
04 Sep 2025
Reporting date
02 Sep 2025
SEC evidence
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4 File 001-38207

4 filing

Filing date
20 Aug 2025
Reporting date
18 Aug 2025
SEC evidence
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4 File 001-38207

4 filing

Filing date
15 Apr 2025
Reporting date
14 Apr 2025
SEC evidence
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4 File 001-38207

4 filing

Filing date
05 Mar 2025
Reporting date
03 Mar 2025
SEC evidence
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4 File 001-38207

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filing date
22 Aug 2024
Reporting date
20 Aug 2024
SEC evidence
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4 File 001-38207

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filing date
30 Apr 2024
Reporting date
26 Apr 2024
SEC evidence
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4 File 001-38207

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filing date
20 Mar 2024
Reporting date
18 Mar 2024
SEC evidence
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SC 13G/A

SC 13G/A filing

Filing date
07 Feb 2024
Reporting date
Not listed
SEC evidence
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4 File 001-38207

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filing date
01 Feb 2024
Reporting date
30 Jan 2024
SEC evidence
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4 File 001-38207

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filing date
04 Jan 2024
Reporting date
02 Jan 2024
SEC evidence
Open document Open filing
Next action
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4 File 001-38207

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filing date
28 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
Open document Open filing
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