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 B. Klein SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001808968.

Entity Type

Individual

Total Filings

Latest Filing

15 May 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 15 May 2026 for CIK 0001808968.

View Source Filing

Business address: C/O Ptc Therapeutics, Inc., 100 Corporate Court, South Plainfield, NJ, 07080
Top holdings (ownership): PTCT and CLPT

Quick Takeaways

Matthew B. Klein is an SEC filer tracked under CIK 0001808968.
64 filings are listed on this profile.
Common form coverage includes 4, 144, 3.

What Changed

Latest filing: 4 filed on 15 May 2026.
Report period: 13 May 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 May 2026 for CIK 0001808968.

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 B. Klein.

Latest source-backed update: 4 filed 15 May 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 May 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 B. Klein

Ownership report updated

Latest ownership report period: 13 May 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

15 May 2026

Page type

Ownership filings

Latest period

13 May 2026

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

Open ownership filings Browse recent public updates

Filer Overview

Matthew B. Klein has filed 64 SEC EDGAR filings since 17 Apr 2020. Common forms include 4, 144, 3.

Reporting owner transactions Latest 13F filings

Latest Filings

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

4 File 001-35969

4 filing

Filing date: 15 May 2026
Reporting date: 13 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 14 May 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 14 May 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

Filing date: 23 Apr 2026
Reporting date: 21 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 21 Apr 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

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

4 File 001-35969

4 filing

Filing date: 20 Feb 2026
Reporting date: 18 Feb 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 18 Feb 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

Filing date: 12 Jan 2026
Reporting date: 08 Jan 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

Filing date: 08 Jan 2026
Reporting date: 06 Jan 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 08 Jan 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 07 Jan 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

Filing date: 06 Jan 2026
Reporting date: 02 Jan 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 06 Jan 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

Filing date: 02 Jan 2026
Reporting date: 30 Dec 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

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

4 File 001-35969

4 filing

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

144

144 filing

Filing date: 02 Dec 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

Filing date: 05 Aug 2025
Reporting date: 01 Aug 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 05 Aug 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-34822

4

Filing date: 23 May 2025
Reporting date: 22 May 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-34822

4

Filing date: 19 May 2025
Reporting date: 16 May 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

Filing date: 24 Apr 2025
Reporting date: 22 Apr 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 22 Apr 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

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

144

144 filing

Filing date: 19 Feb 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

Filing date: 10 Jan 2025
Reporting date: 07 Jan 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 08 Jan 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

Filing date: 07 Jan 2025
Reporting date: 03 Jan 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

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

4 File 001-35969

4 filing

Filing date: 03 Jan 2025
Reporting date: 31 Dec 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 31 Dec 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-34822

FORM 4

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

4 File 001-34822

FORM 4

Filing date: 15 May 2024
Reporting date: 14 May 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

Filing date: 22 Apr 2024
Reporting date: 19 Apr 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

Filing date: 19 Apr 2024
Reporting date: 17 Apr 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

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

144

144 filing

Filing date: 17 Apr 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

Filing date: 16 Feb 2024
Reporting date: 15 Feb 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

Filing date: 10 Jan 2024
Reporting date: 08 Jan 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 09 Jan 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

Filing date: 09 Jan 2024
Reporting date: 05 Jan 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

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

144

144 filing

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

4 File 001-35969

4 filing

Filing date: 28 Dec 2023
Reporting date: 28 Dec 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-34822

FORM 4

Filing date: 26 May 2023
Reporting date: 25 May 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

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

144

144 filing

Filing date: 18 Apr 2023
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

Filing date: 12 Jan 2023
Reporting date: 10 Jan 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

Filing date: 11 Jan 2023
Reporting date: 09 Jan 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

Filing date: 09 Jan 2023
Reporting date: 05 Jan 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-34822

PRIMARY DOCUMENT

Filing date: 27 May 2022
Reporting date: 25 May 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

4 filing

Filing date: 21 Apr 2022
Reporting date: 19 Apr 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

FORM 4 -

Filing date: 11 Jan 2022
Reporting date: 07 Jan 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-34822

4 filing

Filing date: 28 Jun 2021
Reporting date: 25 Jun 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

FORM 4 -

Filing date: 21 Apr 2021
Reporting date: 19 Apr 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

FORM 4 -

Filing date: 20 Jan 2021
Reporting date: 15 Jan 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

FORM 4 -

Filing date: 12 Jan 2021
Reporting date: 08 Jan 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

FORM 4 -

Filing date: 08 Jan 2021
Reporting date: 06 Jan 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35969

FORM 4

Filing date: 17 Apr 2020
Reporting date: 16 Apr 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-35969

FORM 3

Filing date: 17 Apr 2020
Reporting date: 16 Apr 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-34822

3 filing

Filing date: 17 Apr 2020
Reporting date: 16 Apr 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

About this filer

Matthew B. Klein files with the SEC under CIK 0001808968. 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 B. Klein 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 B. Klein

Filer Overview

Latest Filings

4 filing

144 filing

144 filing

4 filing

144 filing

4 filing

144 filing

4 filing

144 filing

4 filing

4 filing

144 filing

144 filing

4 filing

144 filing

4 filing

144 filing

4 filing

144 filing

4 filing

144 filing

4

4

4 filing

144 filing

4 filing

144 filing

144 filing

4 filing

144 filing

4 filing

144 filing

4 filing

144 filing

FORM 4

FORM 4

4 filing

4 filing

144 filing

144 filing

4 filing

4 filing

144 filing

4 filing

144 filing

144 filing

4 filing

FORM 4

4 filing

144 filing

4 filing

4 filing

4 filing

PRIMARY DOCUMENT

4 filing

FORM 4 -

4 filing

FORM 4 -

FORM 4 -

FORM 4 -

FORM 4 -

FORM 4

FORM 3

3 filing

About this filer

FAQ

Related pages