A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.

Why are some filings missing?

New filings appear as the SEC updates EDGAR, and older records can vary by availability.

How often is this page updated?

Updates follow new EDGAR submissions and periodic data refreshes.

Filer Snapshot

Donald G. Cook

CIK 0001334785. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.

Entity Type

Individual

Total Filings

Latest Filing

07 Jan 2026

Industry

n/a

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Open 13F if you want portfolio holdings.
Open 13D/G or insider pages only when this CIK has those rows.

Open reporting owner context

Source: SEC Forms 3/4/5

4 filed on 07 Jan 2026 for CIK 0001334785.

View Source Filing

Business address: 100 First Stamford Place, Stamford, CT, 06902
Top holdings (ownership): TPL and CXT

Filer intelligence

What SEC filings say about Donald G. Cook

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

Forms 3/4/5 show insider context for TPL worth $886.4K.

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 No rows yet

Beneficial ownership and large-stake disclosures.

Open

Forms 3/4/5 2 rows

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

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Forms 3/4/5 insider context

TPL

05 Jan 2026

$886.4K

Issuer page Owner page

CXT

12 Aug 2021

$331.4K

Issuer page Owner page

Latest update

What changed recently for Donald G. Cook

Ownership report updated

Latest ownership report period: 05 Jan 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

07 Jan 2026

Page type

Ownership filings

Latest period

05 Jan 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 07 Jan 2026.

Open ownership filings Browse recent public updates

Filer Overview

Donald G. Cook has filed 62 SEC EDGAR filings since 03 Aug 2005. Common forms include 4, 4/A, 3.

Donald G. Cook SEC filings Donald G. Cook owner filings

Latest Filings

Recent SEC filings for Donald G. Cook with direct links to document and filing folders.

4 File 001-39804

OWNERSHIP DOCUMENT

Filing date: 07 Jan 2026
Reporting date: 05 Jan 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39804

FORM 4

Filing date: 06 Jan 2025
Reporting date: 02 Jan 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4/A File 001-39804

OWNERSHIP DOCUMENT

Filing date: 20 May 2024
Reporting date: 15 May 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39804

OWNERSHIP DOCUMENT

Filing date: 17 May 2024
Reporting date: 15 May 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39804

OWNERSHIP DOCUMENT

Filing date: 03 Jan 2024
Reporting date: 01 Jan 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39804

OWNERSHIP DOCUMENT

Filing date: 08 Nov 2023
Reporting date: 07 Nov 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39804

OWNERSHIP DOCUMENT

Filing date: 03 Jan 2023
Reporting date: 01 Jan 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39804

OWNERSHIP DOCUMENT

Filing date: 02 Mar 2022
Reporting date: 28 Feb 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39804

OWNERSHIP DOCUMENT

Filing date: 11 Jan 2022
Reporting date: 11 Jan 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

FORM 4

Filing date: 16 Aug 2021
Reporting date: 12 Aug 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

FORM 4

Filing date: 14 May 2021
Reporting date: 12 May 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

FORM 4

Filing date: 28 Apr 2021
Reporting date: 26 Apr 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

FORM 4

Filing date: 03 Feb 2021
Reporting date: 01 Feb 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-39804

3 filing

Filing date: 11 Jan 2021
Reporting date: 11 Jan 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

FORM 4

Filing date: 11 May 2020
Reporting date: 08 May 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

FORM 4

Filing date: 29 Apr 2020
Reporting date: 27 Apr 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

FORM 4

Filing date: 01 Nov 2019
Reporting date: 31 Oct 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

FORM 4

Filing date: 30 Apr 2019
Reporting date: 29 Apr 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

FORM 4

Filing date: 01 Feb 2019
Reporting date: 01 Feb 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

FORM 4

Filing date: 25 Apr 2018
Reporting date: 23 Apr 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

FORM 4

Filing date: 26 Apr 2017
Reporting date: 24 Apr 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

4 filing

Filing date: 04 Nov 2016
Reporting date: 02 Nov 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

4 filing

Filing date: 27 Apr 2016
Reporting date: 25 Apr 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

4 filing

Filing date: 29 Apr 2015
Reporting date: 27 Apr 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

4 filing

Filing date: 10 Feb 2015
Reporting date: 09 Feb 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

4 filing

Filing date: 06 Feb 2015
Reporting date: 05 Feb 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

4 filing

Filing date: 30 Apr 2014
Reporting date: 28 Apr 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

4 filing

Filing date: 06 May 2013
Reporting date: 03 May 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

4 filing

Filing date: 24 Apr 2013
Reporting date: 22 Apr 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

4 filing

Filing date: 28 Feb 2013
Reporting date: 26 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

4 filing

Filing date: 23 May 2012
Reporting date: 21 May 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

4 filing

Filing date: 25 Apr 2012
Reporting date: 23 Apr 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

4 filing

Filing date: 08 Aug 2011
Reporting date: 05 Aug 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

4 filing

Filing date: 21 Apr 2011
Reporting date: 18 Apr 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

4 filing

Filing date: 29 Apr 2010
Reporting date: 28 Apr 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-01657

4 filing

Filing date: 21 Apr 2010
Reporting date: 19 Apr 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-11535

FORM 4 CLOSING SHARES - COOK

Filing date: 17 Feb 2010
Reporting date: 12 Feb 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

About this filer

Donald G. Cook files with the SEC under CIK 0001334785. This page aggregates EDGAR filings and related ownership activity.

FAQ

What is a CIK?: A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
Why are some filings missing?: New filings appear as the SEC updates EDGAR, and older records can vary by availability.
How often is this page updated?: Updates follow new EDGAR submissions and periodic data refreshes.

Donald G. Cook

Follow future filing-backed changes

What SEC filings say about Donald G. Cook

Quick read

SEC source mix

Forms 3/4/5 insider context

What changed recently for Donald G. Cook

Filer Overview

Latest Filings

OWNERSHIP DOCUMENT

FORM 4

OWNERSHIP DOCUMENT

OWNERSHIP DOCUMENT

OWNERSHIP DOCUMENT

OWNERSHIP DOCUMENT

OWNERSHIP DOCUMENT

OWNERSHIP DOCUMENT

OWNERSHIP DOCUMENT

FORM 4

FORM 4

FORM 4

FORM 4

3 filing

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

4 filing

4 filing

4 filing

4 filing

4 filing

4 filing

4 filing

4 filing

4 filing

4 filing

4 filing

4 filing

4 filing

4 filing

4 filing

FORM 4 CLOSING SHARES - COOK

About this filer

FAQ

Related pages for Donald G. Cook