Phathom Pharmaceuticals, Inc. (PHAT) Institutional Ownership & Insider Trading
162 institutions reported holding Phathom Pharmaceuticals, Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 1 insider trades on Form 4 since 2025-10-01.
Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason
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- Market cap
- 464.4M
- P/E TTM
- —
- Dividend yield
- —
- 52-week
- —
- Next earnings
- 29 Oct, in 5 days
Institutions · all 13F filers
quarter to 30 Jun 2026 · filers in both quarters162 institutions held 89.1% of the shares. Across filers that reported both quarters, shares held changed +4.2%.
Largest moves, shares (millions)
Institutional flow by quarter
net shares added or trimmed, millions · filers in both quarters| Quarter | Holders | Shares held, M | Change | Increased | New | Decreased | Closed |
|---|---|---|---|---|---|---|---|
| Jun 26 | 162 | 72 | +4.2% | 55 | 18 | 45 | 28 |
| Mar 26 | 173 | 69 | +11.5% | 68 | 31 | 39 | 34 |
| Dec 25 | 172 | 62 | -1.0% | 48 | 44 | 47 | 11 |
| Sep 25 | 131 | 62 | +8.5% | 44 | 23 | 26 | 8 |
| Jun 25 | 117 | 57 | -10.7% | 37 | 17 | 35 | 31 |
| Mar 25 | 137 | 64 | -4.0% | 41 | 21 | 29 | 29 |
| Dec 24 | 143 | 67 | -8.0% | 54 | 29 | 27 | 20 |
| Sep 24 | 133 | 73 | +27.0% | 54 | 25 | 17 | 9 |
Phathom Pharmaceuticals, Inc. — questions
- Who owns Phathom Pharmaceuticals, Inc. stock?
- 162 institutions reported Phathom Pharmaceuticals, Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: Frazier Life Sciences Management, L.P. (15.4%), Medicxi Ventures Management (Jersey) Ltd (9.2%), BlackRock, Inc. (5.6%).
- Are Phathom Pharmaceuticals, Inc. insiders buying or selling?
- 1 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.
Every figure on this page comes from Phathom Pharmaceuticals, Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.
How these figures are read: methodology · EquiReason.