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

Matthew Tappin SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001986259.

Entity Type

Individual

Total Filings

Latest Filing

13 Mar 2026

Industry

n/a

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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 13 Mar 2026 for CIK 0001986259.

View Source Filing

Business address: 100 California Street, 14 Th Floor, San Francisco, CA, 94111
Top holdings (ownership): STEM

Quick Takeaways

Matthew Tappin is an SEC filer tracked under CIK 0001986259.
49 filings are listed on this profile.
Common form coverage includes 4, 144, 3.

What Changed

Latest filing: 4 filed on 13 Mar 2026.
Report period: 11 Mar 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 13 Mar 2026 for CIK 0001986259.

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 Matthew Tappin.

Latest source-backed update: 4 filed 13 Mar 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 13 Mar 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 Matthew Tappin

Ownership report updated

Latest ownership report period: 11 Mar 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

13 Mar 2026

Page type

Ownership filings

Latest period

11 Mar 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 13 Mar 2026.

Open ownership filings Browse recent public updates

Filer Overview

Matthew Tappin has filed 49 SEC EDGAR filings since 24 Jul 2023. Common forms include 4, 144, 3.

Reporting owner transactions Latest 13F filings

Latest Filings

Recent SEC filings for Matthew Tappin with direct links to document and filing folders.

4 File 001-39455

FORM 4

Filing date: 13 Mar 2026
Reporting date: 11 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 11 Mar 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

FORM 4

Filing date: 10 Mar 2026
Reporting date: 07 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 10 Mar 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

FORM 4

Filing date: 04 Mar 2026
Reporting date: 03 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 04 Mar 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 03 Mar 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

FORM 4

Filing date: 02 Mar 2026
Reporting date: 26 Feb 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

FORM 4

Filing date: 23 Feb 2026
Reporting date: 20 Feb 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 20 Feb 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

FORM 4

Filing date: 19 Feb 2026
Reporting date: 19 Feb 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 19 Feb 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

FORM 4

Filing date: 18 Feb 2026
Reporting date: 15 Feb 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

FORM 4

Filing date: 24 Nov 2025
Reporting date: 11 Nov 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

FORM 4

Filing date: 12 Nov 2025
Reporting date: 07 Nov 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 12 Nov 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 10 Nov 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

4

Filing date: 30 Jul 2025
Reporting date: 28 Jul 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

4

Filing date: 02 Jul 2025
Reporting date: 30 Jun 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

4

Filing date: 18 Jun 2025
Reporting date: 29 May 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 16 Jun 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 30 May 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

4

Filing date: 17 Mar 2025
Reporting date: 06 Mar 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 12 Mar 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 07 Mar 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

4

Filing date: 21 Feb 2025
Reporting date: 19 Feb 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 20 Feb 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

FORM 4

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

4 File 001-39455

FORM 4

Filing date: 30 May 2024
Reporting date: 28 May 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

FORM 4

Filing date: 28 May 2024
Reporting date: 28 May 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

FORM 4

Filing date: 28 May 2024
Reporting date: 24 May 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 28 May 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

FORM 4

Filing date: 20 Mar 2024
Reporting date: 19 Mar 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 19 Mar 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

FORM 4

Filing date: 12 Mar 2024
Reporting date: 08 Mar 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 08 Mar 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

FORM 4

Filing date: 07 Mar 2024
Reporting date: 05 Mar 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

FORM 4

Filing date: 05 Mar 2024
Reporting date: 01 Mar 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 05 Mar 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 04 Mar 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

FORM 4

Filing date: 21 Feb 2024
Reporting date: 20 Feb 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

FORM 4

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

144

144 filing

Filing date: 20 Feb 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

FORM 4

Filing date: 16 Feb 2024
Reporting date: 14 Feb 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 16 Feb 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 14 Feb 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39455

FORM 4

Filing date: 03 Jan 2024
Reporting date: 31 Dec 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 03 Jan 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-39455

FORM 3

Filing date: 24 Jul 2023
Reporting date: 13 Jul 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

About this filer

Matthew Tappin files with the SEC under CIK 0001986259. 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.

Matthew Tappin SEC EDGAR Filings

Save this filer page for the next filing cycle

Quick Takeaways

What Changed

Why This Matters

Source Evidence

Why revisit this filer page

What changed recently for Matthew Tappin

Filer Overview

Latest Filings

FORM 4

144 filing

FORM 4

144 filing

FORM 4

144 filing

144 filing

FORM 4

FORM 4

144 filing

FORM 4

144 filing

FORM 4

FORM 4

FORM 4

144 filing

144 filing

4

4

4

144 filing

144 filing

4

144 filing

144 filing

4

144 filing

FORM 4

FORM 4

FORM 4

FORM 4

144 filing

FORM 4

144 filing

FORM 4

144 filing

FORM 4

FORM 4

144 filing

144 filing

FORM 4

FORM 4

144 filing

FORM 4

144 filing

144 filing

FORM 4

144 filing

FORM 3

About this filer

FAQ

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