Phathom Pharmaceuticals Inc (PHAT)
Who owns Phathom Pharmaceuticals Inc (PHAT)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 75.7% of the shares are freely tradable; institutional investors hold 89.2%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Frazier Life Sciences Management, L.P. | 15.63 | 12,466,489 | +0.0 | 03/31/2026 |
| Medicxi Ventures Management (Jersey) Ltd | 9.36 | 7,464,572 | +0.0 | 03/31/2026 |
| Amvescap Plc. | 5.42 | 4,322,060 | +10.2 | 03/31/2026 |
| BlackRock Inc | 5.09 | 4,061,996 | +14.2 | 03/31/2026 |
| Millennium Management LLC | 5.04 | 4,022,909 | +93.2 | 03/31/2026 |
| The Carlyle Group Inc | 4.38 | 3,496,808 | +0.0 | 03/31/2026 |
| Vanguard Group Inc | 3.98 | 3,177,211 | -1.2 | 12/31/2025 |
| Vanguard Capital Management, LLC | 3.24 | 2,583,636 | +0.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Invesco OFI Global Equity | 2.94 | 2,342,451 | +18.6 | 03/31/2026 |
| Invesco Global A | 2.94 | 2,342,451 | +0.0 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 14. Jul 2026 | Breedlove Robert Charles | Principal Accounting Officer | Other | 1,555 | 11.04 | 17,159 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character.
View all insider transactions →Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.