Filer Snapshot

Stuart D. Porter SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001520346.

Entity Type

Individual

Total Filings

41

Latest Filing

20 Jan 2026

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 20 Jan 2026 for CIK 0001520346.

View Source Filing
Business address
185 Dartmouth Street, 7 Th Floor, Boston, MA, 02116
Top holdings (ownership)
AIRJ and GAME
Top holdings (Schedule 13D)
AIRJ

Quick Takeaways

  • Stuart D. Porter is an SEC filer tracked under CIK 0001520346.
  • 41 filings are listed on this profile.
  • Common form coverage includes 4, SCHEDULE 13D/A, SC 13G/A and more.

What Changed

  • Latest filing: 4 filed on 20 Jan 2026.
  • Report period: 15 Jan 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 20 Jan 2026 for CIK 0001520346.

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 Stuart D. Porter.

Latest source-backed update
4 filed 20 Jan 2026
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Revisit after a new SEC filing appears to compare the updated record with prior filings.
  • Latest filing on record: 4 filed 20 Jan 2026.
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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 Stuart D. Porter

Ownership report updated

Latest ownership report period: 15 Jan 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

20 Jan 2026

Page type

Ownership filings

Latest period

15 Jan 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 20 Jan 2026.

Open ownership filings Browse recent public updates

Filer Overview

Stuart D. Porter has filed 41 SEC EDGAR filings since 11 May 2011. Common forms include 4, SCHEDULE 13D/A, SC 13G/A, SC 13D and more.

Reporting owner transactions Latest 13F filings

Latest Filings

Recent SEC filings for Stuart D. Porter with direct links to document and filing folders.

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open 4 document View SEC filing for 4 4 20 Jan 2026 15 Jan 2026 001-41151
4 Open 4 document View SEC filing for 4 4 10 Dec 2025 08 Dec 2025 001-41151
4 Open 4 document View SEC filing for 4 4 09 Dec 2025 04 Dec 2025 001-39389
SCHEDULE 13D/A Open SCHEDULE 13D/A document View SEC filing for SCHEDULE 13D/A 03 Dec 2025
4 Open 4 document View SEC filing for 4 4 16 Jul 2025 16 Jul 2025 001-38441
4 Open 4 document View SEC filing for 4 4 02 Jun 2025 29 May 2025 001-41151
4 Open 4 document View SEC filing for 4 06 Jan 2025 26 Dec 2024 001-41151
4 Open 4 document View SEC filing for 4 FORM 4 18 Nov 2024 15 Nov 2024 001-38441
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 14 Nov 2024
4 Open 4 document View SEC filing for 4 20 Aug 2024 16 Aug 2024 001-39389
4 Open 4 document View SEC filing for 4 10 Jun 2024 06 Jun 2024 001-41151
SC 13D Open SC 13D document View SEC filing for SC 13D SCHEDULE 13D 21 Mar 2024
4 Open 4 document View SEC filing for 4 19 Mar 2024 14 Mar 2024 001-41151
3 Open 3 document View SEC filing for 3 19 Mar 2024 14 Mar 2024 001-41151
4 Open 4 document View SEC filing for 4 13 Mar 2024 11 Mar 2024 001-38609
4 Open 4 document View SEC filing for 4 12 Mar 2024 07 Mar 2024 001-39389
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 26 Feb 2024
3 Open 3 document View SEC filing for 3 05 Jan 2024 01 Jan 2024 001-39389
4 Open 4 document View SEC filing for 4 FORM 4 16 Nov 2023 15 Nov 2023 001-38441
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 13 Sep 2023
4 Open 4 document View SEC filing for 4 13 Sep 2023 11 Sep 2023 001-38609
4 Open 4 document View SEC filing for 4 07 Jul 2023 15 Jun 2023 001-38609
4 Open 4 document View SEC filing for 4 17 May 2023 15 May 2023 001-38609
SC 13G Open SC 13G document View SEC filing for SC 13G SC 13G 20 Mar 2023
3 Open 3 document View SEC filing for 3 20 Mar 2023 08 Mar 2023 001-38609
4 Open 4 document View SEC filing for 4 FORM 4 16 Nov 2022 15 Nov 2022 001-38441
SC 13D Open SC 13D document View SEC filing for SC 13D SC 13D 14 Jan 2022
4 Open 4 document View SEC filing for 4 FORM 4 17 Nov 2021 15 Nov 2021 001-38441
SC 13G Open SC 13G document View SEC filing for SC 13G SC 13G 16 Aug 2021
4 Open 4 document View SEC filing for 4 FORM 4 18 Nov 2020 16 Nov 2020 001-38441
4/A Open 4/A document View SEC filing for 4/A 4/A 28 Aug 2020 19 Aug 2020 001-03262
4 Open 4 document View SEC filing for 4 4 21 Aug 2020 19 Aug 2020 001-03262
4/A Open 4/A document View SEC filing for 4/A 4/A 16 Jul 2020 03 Jun 2020 001-03262
3 Open 3 document View SEC filing for 3 FORM 3 05 Jun 2020 03 Jun 2020 001-38441
4 Open 4 document View SEC filing for 4 4 04 Jun 2020 03 Jun 2020 001-03262
4 Open 4 document View SEC filing for 4 4 20 May 2020 19 May 2020 001-03262
4 Open 4 document View SEC filing for 4 4 28 Aug 2019 22 Aug 2019 001-03262
3 Open 3 document View SEC filing for 3 3 25 Jul 2019 16 Jul 2019 001-03262
5 Open 5 document View SEC filing for 5 5 28 May 2013 31 Mar 2013 001-35172
4 Open 4 document View SEC filing for 4 4 26 May 2011 24 May 2011 001-35172
3 Open 3 document View SEC filing for 3 3 11 May 2011 11 May 2011 001-35172

About this filer

Stuart D. Porter files with the SEC under CIK 0001520346. 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.
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