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

Timothy P. Clackson SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001242992.

Entity Type

Individual

Total Filings

109

Latest Filing

24 Jul 2025

Industry

n/a

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Go to latest filings table Open reporting owner context

Source: SEC Forms 3/4/5

4 filed on 24 Jul 2025 for CIK 0001242992.

View Source Filing

Business address: C/O Ariad Pharmaceuticals Inc, 26 Landsdowne Street, Cambridge, MA, 02139
Top holdings (ownership): THRX and XLO

Quick Takeaways

Timothy P. Clackson is an SEC filer tracked under CIK 0001242992.
109 filings are listed on this profile.
Common form coverage includes 4, 3, 4/A.

What Changed

Latest filing: 4 filed on 24 Jul 2025.
Report period: 23 Jul 2025.

Why This Matters

You can quote filing dates and form types directly from the SEC record on this page.
Use this profile before deeper ownership or insider analysis to confirm filing history context.

Source Evidence

Source: SEC Forms 3/4/5

4 filed on 24 Jul 2025 for CIK 0001242992.

View Source Filing

Return Loop

Why revisit this filer page

A newly filed 4 can change the filing history, ownership context, or next research path for Timothy P. Clackson.

Latest source-backed update: 4 filed 24 Jul 2025
Why come back: Revisit after a new SEC filing appears to compare the updated record with prior filings.

Latest filing on record: 4 filed 24 Jul 2025.
Save this filer if you want a stable place to return after the next filing cycle.
Open the latest filing table or ownership context to verify what changed.

Filer freshness comes from SEC EDGAR submission history and related source-backed ownership or portfolio filings when available.

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Latest update

What changed recently for Timothy P. Clackson

Ownership report updated

Latest ownership report period: 23 Jul 2025. Open the source-backed page to inspect the fresh filing or facts context.

Update date

24 Jul 2025

Page type

Ownership filings

Latest period

23 Jul 2025

Ownership context was refreshed from SEC Forms 3/4/5 filed on 24 Jul 2025.

Open ownership filings Browse recent public updates

Filer Overview

Timothy P. Clackson has filed 109 SEC EDGAR filings since 19 Aug 2003. Common forms include 4, 3, 4/A.

Reporting owner transactions Latest 13F filings

Latest Filings

Recent SEC filings for Timothy P. Clackson with direct links to document and filing folders.

4 File 001-40523

4 filing

Filing date: 24 Jul 2025
Reporting date: 23 Jul 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40523

4 filing

Filing date: 09 Jun 2025
Reporting date: 05 Jun 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40523

4 filing

Filing date: 17 Jun 2024
Reporting date: 13 Jun 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40523

4 filing

Filing date: 05 Sep 2023
Reporting date: 01 Sep 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40523

4 filing

Filing date: 21 Jun 2023
Reporting date: 16 Jun 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40869

OWNERSHIP DOCUMENT

Filing date: 02 Mar 2023
Reporting date: 01 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40869

OWNERSHIP DOCUMENT

Filing date: 21 Feb 2023
Reporting date: 17 Feb 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40869

OWNERSHIP DOCUMENT

Filing date: 14 Nov 2022
Reporting date: 11 Nov 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39333

FORM 4 SUBMISSION

Filing date: 14 Oct 2022
Reporting date: 14 Oct 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40523

FORM 4 SUBMISSION

Filing date: 22 Jun 2022
Reporting date: 17 Jun 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39333

FORM 4 SUBMISSION

Filing date: 09 Jun 2022
Reporting date: 08 Jun 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40869

FORM 4 SUBMISSION

Filing date: 23 Feb 2022
Reporting date: 18 Feb 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40869

FORM 4 SUBMISSION

Filing date: 22 Dec 2021
Reporting date: 21 Dec 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-40925

OWNERSHIP DOCUMENT

Filing date: 21 Oct 2021
Reporting date: 21 Oct 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-40869

FORM 3 SUBMISSION

Filing date: 06 Oct 2021
Reporting date: 06 Oct 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-40523

FORM 3 SUBMISSION

Filing date: 24 Jun 2021
Reporting date: 24 Jun 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39333

FORM 4 SUBMISSION

Filing date: 21 Jun 2021
Reporting date: 17 Jun 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37718

FORM 4 SUBMISSION

Filing date: 01 Oct 2020
Reporting date: 30 Sep 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37718

FORM 4 SUBMISSION

Filing date: 01 Jul 2020
Reporting date: 30 Jun 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37718

FORM 4 SUBMISSION

Filing date: 25 Jun 2020
Reporting date: 24 Jun 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39333

FORM 4 SUBMISSION

Filing date: 24 Jun 2020
Reporting date: 23 Jun 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39333

FORM 4 SUBMISSION

Filing date: 22 Jun 2020
Reporting date: 18 Jun 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-39333

FORM 3 SUBMISSION

Filing date: 18 Jun 2020
Reporting date: 18 Jun 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37718

FORM 4 SUBMISSION

Filing date: 01 Apr 2020
Reporting date: 31 Mar 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37718

FORM 4 SUBMISSION

Filing date: 02 Jan 2020
Reporting date: 31 Dec 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37718

FORM 4 SUBMISSION

Filing date: 01 Oct 2019
Reporting date: 30 Sep 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37718

FORM 4 SUBMISSION

Filing date: 11 Jul 2019
Reporting date: 10 Jul 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37718

FORM 4 SUBMISSION

Filing date: 01 Jul 2019
Reporting date: 28 Jun 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37718

FORM 4 SUBMISSION

Filing date: 02 Apr 2019
Reporting date: 29 Mar 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37718

FORM 4 SUBMISSION

Filing date: 03 Jan 2019
Reporting date: 02 Jan 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37718

FORM 4 SUBMISSION

Filing date: 02 Oct 2018
Reporting date: 01 Oct 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37718

FORM 4 SUBMISSION

Filing date: 03 Jul 2018
Reporting date: 02 Jul 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37718

FORM 4 SUBMISSION

Filing date: 05 Mar 2018
Reporting date: 01 Mar 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-37718

FORM 3 SUBMISSION

Filing date: 05 Mar 2018
Reporting date: 01 Mar 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

FORM 4

Filing date: 16 Feb 2017
Reporting date: 16 Feb 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

FORM 4

Filing date: 07 Feb 2017
Reporting date: 06 Feb 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

FORM 4

Filing date: 02 Feb 2017
Reporting date: 31 Jan 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

FORM 4

Filing date: 25 Oct 2016
Reporting date: 24 Oct 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

FORM 4

Filing date: 28 Sep 2016
Reporting date: 26 Sep 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

FORM 4

Filing date: 23 Sep 2016
Reporting date: 22 Sep 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

FORM 4

Filing date: 16 Sep 2016
Reporting date: 15 Sep 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

FORM 4

Filing date: 23 Aug 2016
Reporting date: 22 Aug 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

FORM 4

Filing date: 15 Aug 2016
Reporting date: 12 Aug 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

FORM 4

Filing date: 25 Jul 2016
Reporting date: 22 Jul 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

FORM 4

Filing date: 05 Jul 2016
Reporting date: 01 Jul 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

FORM 4

Filing date: 23 Jun 2016
Reporting date: 22 Jun 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

FORM 4

Filing date: 25 May 2016
Reporting date: 23 May 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

FORM 4

Filing date: 02 May 2016
Reporting date: 29 Apr 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

FORM 4

Filing date: 25 Apr 2016
Reporting date: 22 Apr 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

FORM 4

Filing date: 23 Mar 2016
Reporting date: 22 Mar 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

FORM 4

Filing date: 22 Mar 2016
Reporting date: 19 Mar 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

FORM 4

Filing date: 09 Mar 2016
Reporting date: 07 Mar 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

PRIMARY DOCUMENT

Filing date: 03 Mar 2016
Reporting date: 01 Mar 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

PRIMARY DOCUMENT

Filing date: 03 Feb 2016
Reporting date: 01 Feb 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

PRIMARY DOCUMENT

Filing date: 28 Sep 2015
Reporting date: 24 Sep 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

PRIMARY DOCUMENT

Filing date: 16 Jul 2015
Reporting date: 15 Jul 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

PRIMARY DOCUMENT

Filing date: 30 Apr 2015
Reporting date: 29 Apr 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

PRIMARY DOCUMENT

Filing date: 27 Apr 2015
Reporting date: 23 Apr 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

PRIMARY DOCUMENT

Filing date: 23 Mar 2015
Reporting date: 19 Mar 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

PRIMARY DOCUMENT

Filing date: 24 Feb 2015
Reporting date: 20 Feb 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

PRIMARY DOCUMENT

Filing date: 04 Feb 2015
Reporting date: 02 Feb 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

PRIMARY DOCUMENT

Filing date: 17 Jul 2014
Reporting date: 15 Jul 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

PRIMARY DOCUMENT

Filing date: 03 Apr 2014
Reporting date: 01 Apr 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

PRIMARY DOCUMENT

Filing date: 21 Mar 2014
Reporting date: 19 Mar 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

PRIMARY DOCUMENT

Filing date: 04 Feb 2014
Reporting date: 31 Jan 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36172

PRIMARY DOCUMENT

Filing date: 20 Dec 2013
Reporting date: 18 Dec 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 10 Sep 2013
Reporting date: 06 Sep 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 18 Jul 2013
Reporting date: 18 Jul 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 17 Jul 2013
Reporting date: 15 Jul 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 03 Apr 2013
Reporting date: 01 Apr 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 26 Mar 2013
Reporting date: 22 Mar 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 22 Mar 2013
Reporting date: 20 Mar 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 20 Mar 2013
Reporting date: 19 Mar 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 05 Mar 2013
Reporting date: 04 Mar 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 17 Jan 2013
Reporting date: 15 Jan 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 21 Dec 2012
Reporting date: 20 Dec 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 20 Dec 2012
Reporting date: 18 Dec 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 04 Sep 2012
Reporting date: 30 Aug 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 16 Aug 2012
Reporting date: 15 Aug 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 01 Aug 2012
Reporting date: 30 Jul 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 04 May 2012
Reporting date: 02 May 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 17 Apr 2012
Reporting date: 13 Apr 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 03 Apr 2012
Reporting date: 26 Mar 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 28 Mar 2012
Reporting date: 26 Mar 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 26 Mar 2012
Reporting date: 22 Mar 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 21 Mar 2012
Reporting date: 19 Mar 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 19 Mar 2012
Reporting date: 16 Mar 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4/A File 000-21696

PRIMARY DOCUMENT

Filing date: 17 Feb 2012
Reporting date: 14 Feb 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 16 Feb 2012
Reporting date: 14 Feb 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 09 Jun 2011
Reporting date: 07 Jun 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 13 Apr 2011
Reporting date: 11 Apr 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 05 Apr 2011
Reporting date: 01 Apr 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

PRIMARY DOCUMENT

Filing date: 24 Mar 2011
Reporting date: 22 Mar 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

FORM 4

Filing date: 27 Oct 2010
Reporting date: 26 Oct 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

FORM 4

Filing date: 25 Jun 2010
Reporting date: 24 Jun 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-21696

FORM 4

Filing date: 24 Mar 2010
Reporting date: 22 Mar 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

About this filer

Timothy P. Clackson files with the SEC under CIK 0001242992. 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.