Patrick J Heron

CIK 1365617 · last filed 2026-06-17

Patrick J Heron is a corporate insider who has filed 71 SEC Form 4 insider transactions across 16 companies since 2007. The most recent filing, for MIRM, was dated Jun 17, 2026. Across all open-market trades the lifetime net is +$87.6M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $623.0M across reported positions. 23 SEC filings were submitted jointly with James N Topper.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

Loading insider history…
Disclosed Exposure

$623.01M

Companies

16

Total Filings

71

Lifetime Open-Market Net

$87.63M

Filer Profile

Reported Address
550 HAMILTON AVE., SUITE 100
PALO ALTO, CA 94301
Related Filers
James N Topper — 23 joint filings, latest 2025-09-30
FHM LIFE SCIENCES VIII, L.L.C. — 13 joint filings, latest 2023-10-26
Frazier Life Sciences VIII, L.P. — 13 joint filings, latest 2023-10-26
Nathan R Every — 12 joint filings, latest 2018-05-15
ALAN D FRAZIER — 12 joint filings, latest 2018-05-15
Nader J Naini — 12 joint filings, latest 2018-05-15
FHMLS X, L.L.C. — 9 joint filings, latest 2025-09-30
Frazier Life Sciences X, L.P. — 9 joint filings, latest 2025-09-30
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
MIRM Director 464,713 $98.22 $45.64M $20.35M 19 2026-06-17
ARQT Director 59,661 $23.89 $1.43M $9.07M 16 2026-06-12
MBX Director 3,927,774 $59.02 $231.82M $10.00M 4 2026-06-05
HilleVax, Inc. (HLVX) Delisted Director 8,552,536 $2.09 $17.87M $0 4 2025-06-25
Imago BioSciences, Inc. (IMGO) Delisted Director $36.01 $0 1 2021-07-19
PCVX Director 2,309,554 $59.47 $137.35M $4.00M 3 2021-06-03
Iterum Therapeutics plc (ITRM) Delisted Director 80,411 $0.03 $2.4K $0 5 2020-07-06
PASG Director 148,862 $5.00 $744.3K $9.90M 2 2020-03-03
Entasis Therapeutics Holdings Inc. (ETTX) Delisted 10%+ Owner 1,299,953 $2.19 $2.85M $21.30M 2 2020-01-13
ALPINE IMMUNE SCIENCES, INC. (ALPN) Delisted 10%+ Owner 2,571,450 $64.97 $167.07M $8.00M 1 2019-01-22
ANAB 10%+ Owner 3,319,224 $53.87 $178.81M $0 2 2018-05-15
Tobira Therapeutics, Inc. (TBRA) Delisted Director 2,668,570 $0 3 2016-01-14
COLL Director 1,196,834 $22.75 $27.23M $1.80M 2 2015-09-14
GKOS 10%+ Owner $167.25 $0 1 2015-06-30
Cidara Therapeutics, Inc. (CDTX) Delisted Director 7,782 $221.38 $1.72M $3.20M 1 2015-04-22
Trubion Pharmaceuticals, Inc (TRBN) Delisted Director 0 $0 4 2010-10-28

Recent Filings

71 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-06-17 MIRM Grant (A) $0 EDGAR
2026-06-12 ARQT $0 EDGAR
2026-06-09 ARQT Grant (A) +5,778 $0 EDGAR
2026-06-05 MBX Grant (A) $0 EDGAR
2026-01-27 MIRM Mixed +290,702 $9.00M EDGAR
2025-06-25 HilleVax, Inc. (HLVX) Delisted Grant (A) +17,199 $0 EDGAR
2025-06-17 ARQT Buy (P) +2,646 $34.6K EDGAR
2025-06-16 ARQT Grant (A) +7,609 $0 EDGAR
2025-06-06 ARQT Buy (P) +2,268 $30.2K EDGAR
2025-06-06 MBX Grant (A) $0 EDGAR
Showing 110 of 71
Page 1 of 8
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.