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

Robert Hershberg SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001274139.

Entity Type

Individual

Total Filings

Latest Filing

06 Mar 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 06 Mar 2026 for CIK 0001274139.

View Source Filing

Business address: 321 Harrison Ave, Suite 500, Boston, MA, 02118
Top holdings (ownership): ADPT, RXRX, FATE, and NSTG

Quick Takeaways

Robert Hershberg is an SEC filer tracked under CIK 0001274139.
80 filings are listed on this profile.
Common form coverage includes 4, 144, 3 and more.

What Changed

Latest filing: 4 filed on 06 Mar 2026.
Report period: 04 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 06 Mar 2026 for CIK 0001274139.

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 Robert Hershberg.

Latest source-backed update: 4 filed 06 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 06 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 Robert Hershberg

Ownership report updated

Latest ownership report period: 04 Mar 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

06 Mar 2026

Page type

Ownership filings

Latest period

04 Mar 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 06 Mar 2026.

Open ownership filings Browse recent public updates

Filer Overview

Robert Hershberg has filed 80 SEC EDGAR filings since 22 Dec 2003. Common forms include 4, 144, 3, 5.

Reporting owner transactions Latest 13F filings

Latest Filings

Recent SEC filings for Robert Hershberg with direct links to document and filing folders.

4 File 001-38957

PRIMARY DOCUMENT

Filing date: 06 Mar 2026
Reporting date: 04 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38957

PRIMARY DOCUMENT

Filing date: 12 Dec 2025
Reporting date: 10 Dec 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

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

4 File 001-40493

FORM 4

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

3 File 001-40493

FORM 3

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

4 File 001-41365

4

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

4 File 001-40323

FORM 4

Filing date: 23 Jun 2025
Reporting date: 18 Jun 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38957

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filing date: 12 Mar 2025
Reporting date: 12 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

4 File 001-38957

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filing date: 06 Mar 2025
Reporting date: 04 Mar 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-41365

4

Filing date: 12 Feb 2025
Reporting date: 04 Feb 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40323

FORM 4

Filing date: 05 Jun 2024
Reporting date: 03 Jun 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38957

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

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

4 File 001-41365

4

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

144

144 filing

Filing date: 22 Jan 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40323

FORM 4 SUBMISSION

Filing date: 21 Jun 2023
Reporting date: 16 Jun 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36076

FORM 4 SUBMISSION

Filing date: 07 Jun 2023
Reporting date: 06 Jun 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38957

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filing date: 08 Mar 2023
Reporting date: 06 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38957

FORM 4 SUBMISSION

Filing date: 03 Feb 2023
Reporting date: 02 Feb 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-41365

FORM 4 SUBMISSION

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

4 File 001-40323

FORM 4 SUBMISSION

Filing date: 16 Jun 2022
Reporting date: 14 Jun 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39756

FORM 4 SUBMISSION

Filing date: 13 Jun 2022
Reporting date: 10 Jun 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36076

FORM 4 SUBMISSION

Filing date: 13 Jun 2022
Reporting date: 09 Jun 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36076

FORM 4 SUBMISSION

Filing date: 06 Jun 2022
Reporting date: 03 Jun 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-41365

FORM 3 SUBMISSION

Filing date: 28 Apr 2022
Reporting date: 28 Apr 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35980

FORM 4

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

4 File 001-38957

FORM 4 SUBMISSION

Filing date: 28 Jan 2022
Reporting date: 26 Jan 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40323

FORM 4 SUBMISSION

Filing date: 05 Jan 2022
Reporting date: 03 Jan 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40323

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 001-39756

FORM 4 SUBMISSION

Filing date: 21 Sep 2021
Reporting date: 04 Jun 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40323

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 001-35980

FORM 4

Filing date: 17 Jun 2021
Reporting date: 15 Jun 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36076

FORM 4 SUBMISSION

Filing date: 04 Jun 2021
Reporting date: 02 Jun 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40323

FORM 4 SUBMISSION

Filing date: 22 Apr 2021
Reporting date: 20 Apr 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40323

FORM 4 SUBMISSION

Filing date: 19 Apr 2021
Reporting date: 15 Apr 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35980

FORM 4

Filing date: 19 Apr 2021
Reporting date: 15 Apr 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-40323

FORM 3 SUBMISSION

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

4 File 001-35980

FORM 4

Filing date: 17 Mar 2021
Reporting date: 15 Mar 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38957

FORM 4 SUBMISSION

Filing date: 10 Mar 2021
Reporting date: 08 Mar 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38957

FORM 4 SUBMISSION

Filing date: 10 Mar 2021
Reporting date: 08 Mar 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35980

FORM 4

Filing date: 18 Feb 2021
Reporting date: 16 Feb 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38957

FORM 4 SUBMISSION

Filing date: 17 Feb 2021
Reporting date: 14 Feb 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38957

FORM 4 SUBMISSION

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

4 File 001-35980

FORM 4

Filing date: 19 Jan 2021
Reporting date: 15 Jan 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38957

FORM 4 SUBMISSION

Filing date: 16 Dec 2020
Reporting date: 15 Dec 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35980

FORM 4

Filing date: 16 Dec 2020
Reporting date: 15 Dec 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39756

FORM 4 SUBMISSION

Filing date: 07 Dec 2020
Reporting date: 03 Dec 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-39756

FORM 3 SUBMISSION

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

4 File 001-38957

FORM 4 SUBMISSION

Filing date: 18 Nov 2020
Reporting date: 16 Nov 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35980

FORM 4

Filing date: 18 Nov 2020
Reporting date: 16 Nov 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38957

FORM 4 SUBMISSION

Filing date: 16 Oct 2020
Reporting date: 15 Oct 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35980

FORM 4

Filing date: 16 Oct 2020
Reporting date: 15 Oct 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35980

FORM 4

Filing date: 17 Sep 2020
Reporting date: 15 Sep 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38957

FORM 4 SUBMISSION

Filing date: 16 Sep 2020
Reporting date: 15 Sep 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38957

FORM 4 SUBMISSION

Filing date: 19 Aug 2020
Reporting date: 17 Aug 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35980

FORM 4

Filing date: 19 Aug 2020
Reporting date: 17 Aug 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38957

FORM 4 SUBMISSION

Filing date: 17 Jul 2020
Reporting date: 15 Jul 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35980

FORM 4

Filing date: 17 Jul 2020
Reporting date: 15 Jul 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38957

FORM 4 SUBMISSION

Filing date: 17 Jun 2020
Reporting date: 15 Jun 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35980

FORM 4

Filing date: 17 Jun 2020
Reporting date: 15 Jun 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38957

FORM 4 SUBMISSION

Filing date: 18 May 2020
Reporting date: 15 May 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35980

FORM 4

Filing date: 18 May 2020
Reporting date: 15 May 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36076

FORM 4 SUBMISSION

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

3 File 001-36076

FORM 3 SUBMISSION

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

4 File 001-38957

FORM 4 SUBMISSION

Filing date: 27 Apr 2020
Reporting date: 23 Apr 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38957

FORM 4 SUBMISSION

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

3 File 001-38957

PRIMARY DOCUMENT

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

4 File 001-35980

FORM 4

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

4 File 001-35980

FORM 4

Filing date: 27 Mar 2019
Reporting date: 25 Mar 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35980

FORM 4

Filing date: 03 Jan 2018
Reporting date: 01 Jan 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35980

FORM 4 SUBMISSION

Filing date: 04 Jan 2017
Reporting date: 01 Jan 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35980

FORM 4 SUBMISSION

Filing date: 05 Jan 2016
Reporting date: 01 Jan 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35980

FORM 4 SUBMISSION

Filing date: 03 Mar 2015
Reporting date: 02 Mar 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-35980

FORM 3 SUBMISSION

Filing date: 03 Mar 2015
Reporting date: 02 Mar 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

About this filer

Robert Hershberg files with the SEC under CIK 0001274139. 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.