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

David C. Wajsgras SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001193800.

Entity Type

Individual

Total Filings

151

Latest Filing

15 Apr 2026

Industry

n/a

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Use the filings table to verify the newest submission, form type, and report period.
Open the deeper context page only when this filer actually has insider or ownership signal.

Go to latest filings table Open reporting owner context

Source: SEC Forms 3/4/5

4 filed on 15 Apr 2026 for CIK 0001193800.

View Source Filing

Business address: 870 Winter Street, Waltham, MA, 02451
Top holdings (ownership): MLM, PSN, and WCC

Quick Takeaways

David C. Wajsgras is an SEC filer tracked under CIK 0001193800.
151 filings are listed on this profile.
Common form coverage includes 4, 3, 4/A.

What Changed

Latest filing: 4 filed on 15 Apr 2026.
Report period: 14 Apr 2026.

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 15 Apr 2026 for CIK 0001193800.

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 David C. Wajsgras.

Latest source-backed update: 4 filed 15 Apr 2026
Why come back: Revisit after a new SEC filing appears to compare the updated record with prior filings.

Latest filing on record: 4 filed 15 Apr 2026.
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.

Jump to save and follow actions Open latest filings table

Latest update

What changed recently for David C. Wajsgras

Ownership report updated

Latest ownership report period: 14 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

14 Apr 2026

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

Open ownership filings Browse recent public updates

Filer Overview

David C. Wajsgras has filed 151 SEC EDGAR filings since 14 Nov 2003. Common forms include 4, 3, 4/A.

Reporting owner transactions Latest 13F filings

Latest Filings

Recent SEC filings for David C. Wajsgras with direct links to document and filing folders.

4 File 001-07782

4

Filing date: 15 Apr 2026
Reporting date: 14 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

4

Filing date: 02 Apr 2026
Reporting date: 01 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-14989

4

Filing date: 02 Apr 2026
Reporting date: 31 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-14989

4

Filing date: 03 Mar 2026
Reporting date: 02 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 02 Mar 2026
Reporting date: 27 Feb 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-14989

3

Filing date: 09 Jan 2026
Reporting date: 01 Jan 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

4

Filing date: 05 Jan 2026
Reporting date: 01 Jan 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 01 Dec 2025
Reporting date: 28 Nov 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

4

Filing date: 03 Oct 2025
Reporting date: 01 Oct 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 02 Sep 2025
Reporting date: 29 Aug 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

4

Filing date: 03 Jul 2025
Reporting date: 01 Jul 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 03 Jun 2025
Reporting date: 30 May 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 16 May 2025
Reporting date: 15 May 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

4

Filing date: 17 Apr 2025
Reporting date: 15 Apr 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

4

Filing date: 03 Apr 2025
Reporting date: 01 Apr 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 03 Mar 2025
Reporting date: 28 Feb 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

4

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

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 03 Dec 2024
Reporting date: 29 Nov 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

4

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

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 03 Sep 2024
Reporting date: 30 Aug 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

4

Filing date: 02 Jul 2024
Reporting date: 01 Jul 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 04 Jun 2024
Reporting date: 31 May 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 17 May 2024
Reporting date: 16 May 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

4

Filing date: 18 Apr 2024
Reporting date: 16 Apr 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

4

Filing date: 02 Apr 2024
Reporting date: 01 Apr 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 04 Mar 2024
Reporting date: 29 Feb 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

4

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

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 04 Dec 2023
Reporting date: 30 Nov 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

4

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

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 05 Sep 2023
Reporting date: 31 Aug 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

4

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

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 02 Jun 2023
Reporting date: 31 May 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 12 May 2023
Reporting date: 11 May 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

FORM 4 SUBMISSION

Filing date: 20 Apr 2023
Reporting date: 18 Apr 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

FORM 4 SUBMISSION

Filing date: 04 Apr 2023
Reporting date: 03 Apr 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 01 Mar 2023
Reporting date: 28 Feb 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

FORM 4 SUBMISSION

Filing date: 05 Jan 2023
Reporting date: 03 Jan 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 02 Dec 2022
Reporting date: 30 Nov 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

FORM 4 SUBMISSION

Filing date: 04 Oct 2022
Reporting date: 03 Oct 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 01 Sep 2022
Reporting date: 31 Aug 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

FORM 4 SUBMISSION

Filing date: 05 Jul 2022
Reporting date: 01 Jul 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 02 Jun 2022
Reporting date: 31 May 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 16 May 2022
Reporting date: 12 May 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

FORM 4 SUBMISSION

Filing date: 18 Apr 2022
Reporting date: 14 Apr 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

FORM 4 SUBMISSION

Filing date: 04 Apr 2022
Reporting date: 01 Apr 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 01 Mar 2022
Reporting date: 28 Feb 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

FORM 4 SUBMISSION

Filing date: 04 Jan 2022
Reporting date: 01 Jan 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 02 Dec 2021
Reporting date: 30 Nov 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

FORM 4 SUBMISSION

Filing date: 05 Oct 2021
Reporting date: 01 Oct 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 02 Sep 2021
Reporting date: 31 Aug 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

FORM 4 SUBMISSION

Filing date: 06 Jul 2021
Reporting date: 01 Jul 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 01 Jun 2021
Reporting date: 28 May 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 17 May 2021
Reporting date: 13 May 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

FORM 4 SUBMISSION

Filing date: 03 May 2021
Reporting date: 20 Apr 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

FORM 4 SUBMISSION

Filing date: 02 Apr 2021
Reporting date: 01 Apr 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 02 Mar 2021
Reporting date: 26 Feb 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

FORM 4 SUBMISSION

Filing date: 05 Jan 2021
Reporting date: 01 Jan 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 02 Dec 2020
Reporting date: 30 Nov 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

FORM 4 SUBMISSION

Filing date: 05 Oct 2020
Reporting date: 01 Oct 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

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

4/A File 001-07782

FORM 4/A SUBMISSION

Filing date: 05 Aug 2020
Reporting date: 21 Jul 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

FORM 4 SUBMISSION

Filing date: 23 Jul 2020
Reporting date: 21 Jul 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-07782

FORM 4 SUBMISSION

Filing date: 06 Jul 2020
Reporting date: 01 Jul 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-07782

FORM 3 SUBMISSION

Filing date: 01 Jul 2020
Reporting date: 24 Jun 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 01 Jun 2020
Reporting date: 29 May 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-12744

PRIMARY DOCUMENT

Filing date: 15 May 2020
Reporting date: 14 May 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-12744

PRIMARY DOCUMENT

Filing date: 15 May 2020
Reporting date: 14 May 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 08 Apr 2020
Reporting date: 03 Apr 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 27 Mar 2020
Reporting date: 25 Mar 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 25 Mar 2020
Reporting date: 23 Mar 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 18 Feb 2020
Reporting date: 13 Feb 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 29 Jul 2019
Reporting date: 25 Jul 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

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

4 File 001-13699

FORM 4

Filing date: 26 Mar 2019
Reporting date: 25 Mar 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 21 Mar 2019
Reporting date: 20 Mar 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 20 Mar 2019
Reporting date: 18 Mar 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 15 Feb 2019
Reporting date: 13 Feb 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 31 May 2018
Reporting date: 29 May 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 27 Mar 2018
Reporting date: 23 Mar 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 22 Mar 2018
Reporting date: 21 Mar 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 21 Mar 2018
Reporting date: 19 Mar 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 15 Feb 2018
Reporting date: 13 Feb 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 31 May 2017
Reporting date: 30 May 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 31 Mar 2017
Reporting date: 29 Mar 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 22 Mar 2017
Reporting date: 20 Mar 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 09 Mar 2017
Reporting date: 08 Mar 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 16 Feb 2017
Reporting date: 14 Feb 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 01 Jun 2016
Reporting date: 31 May 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 24 Mar 2016
Reporting date: 23 Mar 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 18 Feb 2016
Reporting date: 16 Feb 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 03 Jun 2015
Reporting date: 01 Jun 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 28 May 2015
Reporting date: 26 May 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 20 Mar 2015
Reporting date: 18 Mar 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 18 Feb 2015
Reporting date: 13 Feb 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 04 Jun 2014
Reporting date: 02 Jun 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 02 Jun 2014
Reporting date: 29 May 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 29 May 2014
Reporting date: 27 May 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 18 Feb 2014
Reporting date: 13 Feb 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 11 Sep 2013
Reporting date: 09 Sep 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 19 Jun 2013
Reporting date: 17 Jun 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 03 Jun 2013
Reporting date: 30 May 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 30 May 2013
Reporting date: 28 May 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 15 Feb 2013
Reporting date: 13 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

FORM 4

Filing date: 31 Dec 2012
Reporting date: 27 Dec 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

PRIMARY DOCUMENT

Filing date: 04 Jun 2012
Reporting date: 31 May 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

PRIMARY DOCUMENT

Filing date: 31 May 2012
Reporting date: 29 May 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

PRIMARY DOCUMENT

Filing date: 27 Mar 2012
Reporting date: 23 Mar 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

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 001-13699

PRIMARY DOCUMENT

Filing date: 02 Jun 2011
Reporting date: 31 May 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

PRIMARY DOCUMENT

Filing date: 31 May 2011
Reporting date: 26 May 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

PRIMARY DOCUMENT

Filing date: 04 May 2011
Reporting date: 02 May 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

PRIMARY DOCUMENT

Filing date: 16 Feb 2011
Reporting date: 14 Feb 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

PRIMARY DOCUMENT

Filing date: 03 Jun 2010
Reporting date: 01 Jun 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

PRIMARY DOCUMENT

Filing date: 01 Jun 2010
Reporting date: 27 May 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

PRIMARY DOCUMENT

Filing date: 12 May 2010
Reporting date: 10 May 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

PRIMARY DOCUMENT

Filing date: 05 May 2010
Reporting date: 03 May 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

PRIMARY DOCUMENT

Filing date: 28 Jan 2010
Reporting date: 26 Jan 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-13699

PRIMARY DOCUMENT

Filing date: 13 Jan 2010
Reporting date: 11 Jan 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

About this filer

David C. Wajsgras files with the SEC under CIK 0001193800. 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.