Significant Ownership of Patrick J. Heron
- Large-stake filing summary
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- Recent SEC Schedule 13D/G filings for Patrick J. Heron focus on large-stake beneficial ownership disclosures and amendments.
- Use this view to spot new large holders, amended positions, and activist-style ownership evidence.
- Manager location
- Palo Alto, CA
Large-stake snapshot
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Manager
Names, identifiers, and filing context for this profile.
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Significant Ownership of Patrick J. Heron
| Sym | Company | Class | Ownership | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|---|
| MBX | MBX BIOSCIENCES, INC. | Common Stock, $0.0001 par value per share | 12% | $72,562,680 | +$9,264,602 | 5,224,095 | +15% | Patrick J. Heron | 26 Sep 2025 |
| ARQT | ARCUTIS BIOTHERAPEUTICS, INC. | Common Stock, par value $0.0001 per share | 7.5% | $130,399,321 | 8,943,712 | Patrick J. Heron | 18 Aug 2025 | ||
| MIRM | MIRUM PHARMACEUTICALS, INC. | Common Stock, par value $0.0001 per share | 6.8% | $324,522,832 | +$29,477,804 | 4,108,404 | +10% | Patrick J. Heron | 23 Jan 2026 |
Schedules 13D/G Reported by Patrick J. Heron:
| Sym | Target | Class | Ownership | Change | Current shares | Change | Value | Reporting name | Form | Report period | Filing date |
|---|
Schedule rows are parsed from SEC 13D/G filings. Open the linked filing or target page to verify the reported ownership and shares.