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

Patrick J. Heron

CIK 0001365617. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.

Entity Type

Individual

Total Filings

114

Latest Filing

27 Jan 2026

Industry

n/a

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Start with the summary below, then verify the strongest source-backed page for this filer.

Open 13F if you want portfolio holdings.
Open 13D/G or insider pages only when this CIK has those rows.

Open reporting owner context

Source: SEC Forms 3/4/5

4 filed on 27 Jan 2026 for CIK 0001365617.

View Source Filing

Business address: 550 Hamilton Ave., Suite 100, Palo Alto, CA, 94301
Top holdings (ownership): MIRM, ARQT, MBX, IMGO, and HLVX

Filer intelligence

What SEC filings say about Patrick J. Heron

A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.

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Quick read

3 recent 13D/G stake rows found; top row is MIRM at 6.8% ownership.
Forms 3/4/5 show insider context for MIRM worth $313.78M.

SEC source mix

Counts show available parsed rows, not one combined ownership total.

XML parsed

13F portfolio No rows yet

Quarterly institutional portfolio holdings.

Open

13D/G stakes 3 rows

Beneficial ownership and large-stake disclosures.

Open

Forms 3/4/5 5 rows

Officer, director, and 10% owner holdings or transactions.

Open

13D/G large-stake context

MIRM

23 Jan 2026 · Common Stock, par value $0.0001 per share

6.8%

Issuer page 13D/G history

MBX

26 Sep 2025 · Common Stock, $0.0001 par value per share

12%

Issuer page 13D/G history

ARQT

18 Aug 2025 · Common Stock, par value $0.0001 per share

7.5%

Issuer page 13D/G history

Forms 3/4/5 insider context

MIRM

23 Jan 2026

$313.78M

Issuer page Owner page

ARQT

13 Jun 2025

$121.14M

Issuer page Owner page

MBX

26 Sep 2025 · 10% owner

$93.95M

Issuer page Owner page

IMGO

20 Jul 2021

$83.24M

Issuer page Owner page

Latest update

What changed recently for Patrick J. Heron

Ownership report updated

Latest ownership report period: 23 Jan 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

27 Jan 2026

Page type

Ownership filings

Latest period

23 Jan 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 27 Jan 2026.

Open ownership filings Browse recent public updates

Filer Overview

Patrick J. Heron has filed 114 SEC EDGAR filings since 17 Oct 2006. Common forms include 4, 3, 4/A, 3/A.

Patrick J. Heron SEC filings Patrick J. Heron 13D/G history Patrick J. Heron owner filings

Latest Filings

Recent SEC filings for Patrick J. Heron with direct links to document and filing folders.

4 File 001-38981

4 filing

Filing date: 27 Jan 2026
Reporting date: 23 Jan 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-42272

4 filing

Filing date: 30 Sep 2025
Reporting date: 26 Sep 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-41365

4 filing

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

4 File 001-41365

4

Filing date: 25 Jun 2025
Reporting date: 23 Jun 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39186

4 filing

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

4 File 001-39186

FORM 4

Filing date: 16 Jun 2025
Reporting date: 12 Jun 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39186

4 filing

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

4 File 001-42272

4

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

4 File 001-38981

4 filing

Filing date: 02 Jun 2025
Reporting date: 29 May 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39186

4 filing

Filing date: 23 May 2025
Reporting date: 21 May 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39186

4 filing

Filing date: 19 May 2025
Reporting date: 15 May 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39186

4 filing

Filing date: 15 May 2025
Reporting date: 13 May 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39186

4 filing

Filing date: 13 May 2025
Reporting date: 09 May 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-41365

4

Filing date: 30 Apr 2025
Reporting date: 06 Jun 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38981

4 filing

Filing date: 18 Mar 2025
Reporting date: 14 Mar 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38981

4 filing

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

4 File 001-38981

4 filing

Filing date: 10 Mar 2025
Reporting date: 06 Mar 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38981

4 filing

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

4 File 001-38981

4 filing

Filing date: 20 Sep 2024
Reporting date: 18 Sep 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-42272

4

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

4 File 001-42272

4

Filing date: 13 Sep 2024
Reporting date: 12 Sep 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-42272

3

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

4 File 001-38981

4 filing

Filing date: 10 Sep 2024
Reporting date: 06 Sep 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39186

FORM 4

Filing date: 18 Jun 2024
Reporting date: 14 Jun 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38981

4 filing

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

4/A File 001-41365

4/A filing

Filing date: 31 May 2024
Reporting date: 04 Apr 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-41365

4 filing

Filing date: 08 Apr 2024
Reporting date: 04 Apr 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39186

4 filing

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

4 File 001-38981

FORM 4 SUBMISSION

Filing date: 14 Nov 2023
Reporting date: 09 Nov 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39186

FORM 4 SUBMISSION

Filing date: 26 Oct 2023
Reporting date: 24 Oct 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38981

FORM 4 SUBMISSION

Filing date: 15 Sep 2023
Reporting date: 13 Sep 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38981

FORM 4 SUBMISSION

Filing date: 13 Sep 2023
Reporting date: 11 Sep 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38981

FORM 4 SUBMISSION

Filing date: 05 Sep 2023
Reporting date: 31 Aug 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38981

FORM 4 SUBMISSION

Filing date: 14 Jun 2023
Reporting date: 12 Jun 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-41365

FORM 4 SUBMISSION

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

4 File 001-39186

FORM 4

Filing date: 02 Jun 2023
Reporting date: 31 May 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-41365

FORM 4 SUBMISSION

Filing date: 23 Aug 2022
Reporting date: 19 Aug 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39186

FORM 4 SUBMISSION

Filing date: 09 Aug 2022
Reporting date: 05 Aug 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38981

FORM 4 SUBMISSION

Filing date: 06 Jun 2022
Reporting date: 02 Jun 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39186

FORM 4

Filing date: 03 Jun 2022
Reporting date: 01 Jun 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-41365

FORM 4 SUBMISSION

Filing date: 03 May 2022
Reporting date: 03 May 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 001-37449

FORM 4 SUBMISSION

Filing date: 15 Feb 2022
Reporting date: 11 Feb 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37449

FORM 4 SUBMISSION

Filing date: 21 Sep 2021
Reporting date: 17 Sep 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40604

FORM 4

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

4 File 001-40604

FORM 4

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

3 File 001-40604

FORM 3

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

4 File 001-39186

FORM 4

Filing date: 11 Jun 2021
Reporting date: 09 Jun 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38981

FORM 4 SUBMISSION

Filing date: 08 Jun 2021
Reporting date: 04 Jun 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39323

FORM 4 SUBMISSION

Filing date: 03 Jun 2021
Reporting date: 02 Jun 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39186

FORM 4 SUBMISSION

Filing date: 12 May 2021
Reporting date: 10 May 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

3/A File 001-39765

OWNERSHIP DOCUMENT

Filing date: 17 Dec 2020
Reporting date: 08 Dec 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39765

OWNERSHIP DOCUMENT

Filing date: 11 Dec 2020
Reporting date: 11 Dec 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-39765

OWNERSHIP DOCUMENT

Filing date: 08 Dec 2020
Reporting date: 08 Dec 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39614

FORM 4 SUBMISSION

Filing date: 20 Oct 2020
Reporting date: 20 Oct 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-39614

FORM 3 SUBMISSION

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

4 File 001-38503

FORM 4 SUBMISSION

Filing date: 06 Jul 2020
Reporting date: 01 Jul 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39323

FORM 4 SUBMISSION

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

4 File 001-39094

FORM 4 SUBMISSION

Filing date: 16 Jun 2020
Reporting date: 12 Jun 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39323

FORM 4 SUBMISSION

Filing date: 15 Jun 2020
Reporting date: 11 Jun 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38981

FORM 4 SUBMISSION

Filing date: 15 Jun 2020
Reporting date: 11 Jun 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-39323

FORM 3 SUBMISSION

Filing date: 11 Jun 2020
Reporting date: 11 Jun 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39186

FORM 4

Filing date: 03 Mar 2020
Reporting date: 27 Feb 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39231

FORM 4 SUBMISSION

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

4 File 001-39231

FORM 4 SUBMISSION

Filing date: 02 Mar 2020
Reporting date: 27 Feb 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-39231

FORM 3 SUBMISSION

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

4 File 001-39186

FORM 4 SUBMISSION

Filing date: 06 Feb 2020
Reporting date: 04 Feb 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-39186

FORM 3 SUBMISSION

Filing date: 30 Jan 2020
Reporting date: 30 Jan 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38503

FORM 4 SUBMISSION

Filing date: 23 Jan 2020
Reporting date: 21 Jan 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38670

FORM 4 SUBMISSION

Filing date: 13 Jan 2020
Reporting date: 09 Jan 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-39094

FORM 4 SUBMISSION

Filing date: 30 Oct 2019
Reporting date: 29 Oct 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-39094

FORM 3 SUBMISSION

Filing date: 24 Oct 2019
Reporting date: 24 Oct 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38981

FORM 4 SUBMISSION

Filing date: 24 Jul 2019
Reporting date: 22 Jul 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-38981

FORM 3 SUBMISSION

Filing date: 17 Jul 2019
Reporting date: 17 Jul 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38503

FORM 4 SUBMISSION

Filing date: 17 Jun 2019
Reporting date: 13 Jun 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38503

FORM 4 SUBMISSION

Filing date: 29 May 2019
Reporting date: 24 May 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37449

FORM 4 SUBMISSION

Filing date: 22 Jan 2019
Reporting date: 18 Jan 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38670

FORM 4 SUBMISSION

Filing date: 02 Oct 2018
Reporting date: 28 Sep 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-38670

FORM 3 SUBMISSION

Filing date: 25 Sep 2018
Reporting date: 25 Sep 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38535

4

Filing date: 26 Jun 2018
Reporting date: 25 Jun 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-38535

3

Filing date: 20 Jun 2018
Reporting date: 20 Jun 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38503

FORM 4 SUBMISSION

Filing date: 30 May 2018
Reporting date: 30 May 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38503

FORM 4 SUBMISSION

Filing date: 29 May 2018
Reporting date: 24 May 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-38503

FORM 3 SUBMISSION

Filing date: 24 May 2018
Reporting date: 24 May 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37985

PRIMARY DOCUMENT

Filing date: 15 May 2018
Reporting date: 11 May 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37985

PRIMARY DOCUMENT

Filing date: 15 May 2018
Reporting date: 11 May 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-37449

FORM 3 SUBMISSION

Filing date: 28 Jul 2017
Reporting date: 24 Jul 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-37490

PRIMARY DOCUMENT

Filing date: 24 Feb 2017
Reporting date: 14 Feb 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37985

PRIMARY DOCUMENT

Filing date: 06 Feb 2017
Reporting date: 02 Feb 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37985

PRIMARY DOCUMENT

Filing date: 06 Feb 2017
Reporting date: 02 Feb 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37985

PRIMARY DOCUMENT

Filing date: 31 Jan 2017
Reporting date: 31 Jan 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37985

PRIMARY DOCUMENT

Filing date: 31 Jan 2017
Reporting date: 31 Jan 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-37985

PRIMARY DOCUMENT

Filing date: 25 Jan 2017
Reporting date: 25 Jan 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-37985

PRIMARY DOCUMENT

Filing date: 25 Jan 2017
Reporting date: 25 Jan 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35953

FORM 4 SUBMISSION

Filing date: 03 Nov 2016
Reporting date: 01 Nov 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35953

FORM 4 SUBMISSION

Filing date: 14 Jan 2016
Reporting date: 12 Jan 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37372

PRIMARY DOCUMENT

Filing date: 14 Sep 2015
Reporting date: 10 Sep 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35953

FORM 4 SUBMISSION

Filing date: 13 Jul 2015
Reporting date: 09 Jul 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37463

4

Filing date: 30 Jun 2015
Reporting date: 30 Jun 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37463

4

Filing date: 30 Jun 2015
Reporting date: 26 Jun 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-37463

3

Filing date: 24 Jun 2015
Reporting date: 24 Jun 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-37372

PRIMARY DOCUMENT

Filing date: 14 May 2015
Reporting date: 12 May 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35953

FORM 4 SUBMISSION

Filing date: 06 May 2015
Reporting date: 04 May 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-35953

FORM 3 SUBMISSION

Filing date: 06 May 2015
Reporting date: 04 May 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-37372

PRIMARY DOCUMENT

Filing date: 06 May 2015
Reporting date: 06 May 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-36912

FORM 4 SUBMISSION

Filing date: 22 Apr 2015
Reporting date: 20 Apr 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-36912

FORM 3 SUBMISSION

Filing date: 14 Apr 2015
Reporting date: 14 Apr 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-33054

FORM 4 SUBMISSION

Filing date: 28 Oct 2010
Reporting date: 28 Oct 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

About this filer

Patrick J. Heron files with the SEC under CIK 0001365617. 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.