Patrick J. Heron

Insider Reports History

Identity Names, identifiers, and filing context for this profile. 1 identity field
Reporting-owner location
Palo Alto, CA
SEC source record Original filing metadata and source links for verification. 1 source field
Latest reporting-owner signature
/s/ Doug Sheehy, Attorney-in-Fact
Source: Latest parsed Forms 3/4/5 signature
Source evidence Original filing metadata and source links for verification. 1 source field
Transaction source note
Rows are grouped by transaction date from the original SEC filing. Open the aggregated insider activity page to review issuer-level activity across dates.

Reported holdings for Patrick J. Heron

Form 4 holding Director, 10%+ Owner

MBX Biosciences, Inc.

Security class
Common Stock
Shares / value
5,219,440
Estimated value
$93,949,920
Report date
26 Sep 2025
Price
$18.00
Ownership
By Frazier Life Sciences X, L.P.
Form 4 holding Director

Imago BioSciences, Inc.

Security class
Common Stock
Shares / value
2,312,331
Estimated value
$83,243,916
Report date
20 Jul 2021
Price
$36.00
Ownership
Indirect
Form 4 holding Director

HilleVax, Inc.

Security class
Common Stock
Shares / value
8,535,337
Estimated value
$16,217,140
Report date
23 Jun 2025
Price
$1.90
Ownership
By Frazier Life Sciences X, L.P.
Form 4 holding Director

Imago BioSciences, Inc.

Security class
Stock Option (Right to Buy)
Shares / value
23,809
Estimated value
Report date
15 Jul 2021
Price
Ownership
Direct
Underlying class
Common Stock
Underlying amount
Form 4 holding Director

HilleVax, Inc.

Security class
Stock Option
Shares / value
22,500
Estimated value
Report date
06 Jun 2024
Price
Ownership
Direct
Underlying class
Common Stock
Underlying amount
Form 4 holding Director

Vaxcyte, Inc.

Security class
Stock Option (right to buy)
Shares / value
15,000
Estimated value
Report date
02 Jun 2021
Price
Ownership
Direct
Underlying class
Common Stock
Underlying amount
Form 4 holding Director, 10%+ Owner

MBX Biosciences, Inc.

Security class
Stock option (right to buy)
Shares / value
12,500
Estimated value
Report date
04 Jun 2026
Price
Ownership
Direct
Underlying class
Common Stock
Underlying amount
Form 4 holding Director

Imago BioSciences, Inc.

Security class
Series A Preferred Stock
Shares / value
0
Estimated value
Report date
20 Jul 2021
Price
Ownership
Indirect
Underlying class
Common Stock
Underlying amount
Form 4 holding Director

Imago BioSciences, Inc.

Security class
Series B Preferred Stock
Shares / value
0
Estimated value
Report date
20 Jul 2021
Price
Ownership
Indirect
Underlying class
Common Stock
Underlying amount
Form 4 holding Director

Imago BioSciences, Inc.

Security class
Series C Preferred Stock
Shares / value
0
Estimated value
Report date
20 Jul 2021
Price
Ownership
Indirect
Underlying class
Common Stock
Underlying amount

Insider Reports Filed by Patrick J. Heron

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