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 Kostman SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001874180.

Entity Type

Individual

Total Filings

Latest Filing

18 Mar 2026

Industry

n/a

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Go to latest filings table Open reporting owner context

Source: SEC Forms 3/4/5

3 filed on 18 Mar 2026 for CIK 0001874180.

View Source Filing

Business address: C/O Outbrain Inc., 111 West 19 Th Street, New York, NY, 10011
Top holdings (ownership): U and TEAD

Quick Takeaways

David Kostman is an SEC filer tracked under CIK 0001874180.
42 filings are listed on this profile.
Common form coverage includes 3, 4, 4/A and more.

What Changed

Latest filing: 3 filed on 18 Mar 2026.
Report period: 18 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

3 filed on 18 Mar 2026 for CIK 0001874180.

View Source Filing

Return Loop

Why revisit this filer page

A newly filed 3 can change the filing history, ownership context, or next research path for David Kostman.

Latest source-backed update: 3 filed 18 Mar 2026
Why come back: Revisit after a new SEC filing appears to compare the updated record with prior filings.

Latest filing on record: 3 filed 18 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 David Kostman

Ownership report updated

Latest ownership report period: 18 Mar 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

18 Mar 2026

Page type

Ownership filings

Latest period

18 Mar 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 18 Mar 2026.

Open ownership filings Browse recent public updates

Filer Overview

David Kostman has filed 42 SEC EDGAR filings since 22 Jul 2021. Common forms include 3, 4, 4/A, 144 and more.

Reporting owner transactions Latest 13F filings

Latest Filings

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

3 File 000-27466

3 filing

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

4 File 001-40643

FORM 4

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

4/A File 001-40643

FORM 4/A

Filing date: 09 Dec 2025
Reporting date: 07 Mar 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4/A File 001-40643

FORM 4/A

Filing date: 09 Dec 2025
Reporting date: 07 Mar 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

Filing date: 08 Sep 2025
Reporting date: 07 Sep 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

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

4 File 001-40643

FORM 4

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

4 File 001-40643

FORM 4

Filing date: 06 Jun 2025
Reporting date: 05 Jun 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

Filing date: 17 Mar 2025
Reporting date: 13 Mar 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

Filing date: 11 Mar 2025
Reporting date: 07 Mar 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

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

4 File 001-40643

FORM 4

Filing date: 09 Dec 2024
Reporting date: 07 Dec 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

Filing date: 08 Oct 2024
Reporting date: 07 Oct 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

Filing date: 09 Sep 2024
Reporting date: 07 Sep 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

Filing date: 09 Jul 2024
Reporting date: 07 Jul 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39497

FORM 4

Filing date: 12 Jun 2024
Reporting date: 05 Jun 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

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

4 File 001-40643

FORM 4

Filing date: 06 Jun 2024
Reporting date: 04 Jun 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

Filing date: 08 Apr 2024
Reporting date: 07 Apr 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

Filing date: 08 Mar 2024
Reporting date: 07 Mar 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

Filing date: 08 Jan 2024
Reporting date: 07 Jan 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

Filing date: 08 Dec 2023
Reporting date: 07 Dec 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

Filing date: 10 Oct 2023
Reporting date: 06 Oct 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

Filing date: 08 Sep 2023
Reporting date: 07 Sep 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

Filing date: 07 Jul 2023
Reporting date: 07 Jul 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39497

FORM 4

Filing date: 09 Jun 2023
Reporting date: 07 Jun 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

Filing date: 07 Jun 2023
Reporting date: 05 Jun 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

Filing date: 07 Apr 2023
Reporting date: 07 Apr 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

Filing date: 09 Mar 2023
Reporting date: 07 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

Filing date: 10 Jan 2023
Reporting date: 06 Jan 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

Filing date: 09 Dec 2022
Reporting date: 07 Dec 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39497

FORM 4

Filing date: 09 Nov 2022
Reporting date: 07 Nov 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-39497

FORM 3

Filing date: 09 Nov 2022
Reporting date: 07 Nov 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

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

4 File 001-40643

FORM 4

Filing date: 09 Sep 2022
Reporting date: 07 Sep 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

FORM 4

Filing date: 08 Jul 2022
Reporting date: 06 Jul 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

PRIMARY DOCUMENT

Filing date: 15 Jun 2022
Reporting date: 13 Jun 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

PRIMARY DOCUMENT

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

4 File 001-40643

PRIMARY DOCUMENT

Filing date: 14 Apr 2022
Reporting date: 12 Apr 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40643

PRIMARY DOCUMENT

Filing date: 30 Dec 2021
Reporting date: 28 Dec 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

3/A File 001-40643

OWNERSHIP DOCUMENT

Filing date: 09 Aug 2021
Reporting date: 22 Jul 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-40643

OWNERSHIP DOCUMENT

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

About this filer

David Kostman files with the SEC under CIK 0001874180. 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.

David Kostman 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 David Kostman

Filer Overview

Latest Filings

3 filing

FORM 4

FORM 4/A

FORM 4/A

FORM 4

144 filing

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 4

FORM 3

FORM 4

FORM 4

FORM 4

PRIMARY DOCUMENT

PRIMARY DOCUMENT

PRIMARY DOCUMENT

PRIMARY DOCUMENT

OWNERSHIP DOCUMENT

OWNERSHIP DOCUMENT

About this filer

FAQ

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