PHAT (Phathom Pharmaceuticals, Inc. Common Stock)
Insider Trading Activity
Every open-market purchase and sale reported by PHAT officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-08 | Robert Charles Breedlove | Principal Accounting Officer | F | — | — |
| 2026-07-16 | Robert Charles Breedlove | Principal Accounting Officer | F | — | — |
| 2026-05-27 | Asit Parikh | Director | G | — | — |
| 2026-05-21 | MICHAEL F COLA | Director | A | — | — |
| 2026-05-21 | FRANK KARBE | Director | A | — | — |
| 2026-05-21 | Mark Stenhouse | Director | A | — | — |
| 2026-05-21 | Theodore R Schroeder | Director | A | — | — |
| 2026-05-21 | James N Topper | Director | A | — | — |
| 2026-05-21 | Asit Parikh | Director | MIXED | — | — |
| 2026-05-21 | HEIDI FIELDS | Director | A | — | — |
| 2026-03-11 | Asit Parikh | Director | G | — | — |
| 2026-03-03 | Robert Charles Breedlove | Principal Accounting Officer | MIXED | — | — |
| 2026-02-12 | Steven L Basta | President and CEO | MIXED | — | — |
| 2026-02-12 | Anne Marie Cook | Chief Legal Off. & Corp. Sec. | MIXED | — | — |
| 2026-01-27 | Asit Parikh | Director | G | — | — |
| 2026-01-23 | Robert Charles Breedlove | Principal Accounting Officer | F | — | — |
| 2026-01-15 | Asit Parikh | Director | M | — | — |
| 2026-01-02 | Sanjeev Narula | Chief Financial & Bus. Officer | A | — | — |
| 2026-01-02 | Steven L Basta | President and CEO | A | — | — |
| 2026-01-02 | Anne Marie Cook | Chief Legal Off. & Corp. Sec. | A | — | — |
| 2025-12-23 | Asit Parikh | Director | M | — | — |
| 2025-12-19 | Anne Marie Cook | Chief Legal Off. & Corp. Sec. | MIXED | — | — |
| 2025-12-19 | Steven L Basta | President and CEO | MIXED | — | — |
| 2025-12-19 | Robert Charles Breedlove | Principal Accounting Officer | F | — | — |
| 2025-12-02 | Steven L Basta | President and CEO | MIXED | — | — |
| 2025-11-05 | Robert Charles Breedlove | Principal Accounting Officer | Sell | — | — |
| 2025-10-08 | Sanjeev Narula | Chief Financial & Bus. Officer | A | — | — |
| 2025-10-07 | Sanjeev Narula | Chief Financial & Bus. Officer | A | — | — |
| 2025-09-26 | Steven L Basta | President and CEO | MIXED | — | — |
| 2025-09-09 | Robert Charles Breedlove | Principal Accounting Officer | Sell | — | — |
| 2025-07-18 | Robert Charles Breedlove | Principal Accounting Officer | Sell | — | — |
| 2025-06-24 | Anne Marie Cook | Chief Legal Off. & Corp. Sec. | A | — | — |
| 2025-06-05 | Asit Parikh | Director | A | — | — |
| 2025-06-05 | MICHAEL F COLA | Director | A | — | — |
| 2025-06-05 | HEIDI FIELDS | Director | A | — | — |
| 2025-06-05 | James N Topper | Director | A | — | — |
| 2025-06-05 | FRANK KARBE | Director | A | — | — |
| 2025-06-05 | Mark Stenhouse | Director | A | — | — |
| 2025-05-23 | James N Topper | Director | Buy | — | — |
| 2025-05-21 | Robert Charles Breedlove | Principal Accounting Officer | A | — | — |
| 2025-05-15 | James N Topper | Director | Buy | — | — |
| 2025-05-13 | James N Topper | Director | Buy | — | — |
| 2025-05-08 | Asit Parikh | Director | Buy | — | — |
| 2025-04-16 | Theodore R Schroeder | Director | A | — | — |
| 2025-04-08 | Molly Henderson | CFO and CBO | Sell | — | — |
| 2025-04-03 | Steven L Basta | President and CEO | A | — | — |
| 2025-03-21 | Asit Parikh | Director | M | — | — |
| 2025-03-17 | Asit Parikh | Director | Buy | — | — |
| 2025-03-03 | Terrie Curran | President and Chief Executive | A | — | — |
| 2025-03-03 | Azmi Nabulsi | Chief Operating Officer | A | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | 10%+ Owner | 5,842,352 | — |
| — | 10%+ Owner | 3,825,008 | — |
| — | 10%+ Owner | 3,755,583 | — |
| — | 10%+ Owner | 3,707,408 | — |
| — | 10%+ Owner | 3,115,008 | — |
| — | Director | 1,230,846 | — |
| — | Chief Operating Officer | 1,098,290 | — |
| — | Director | 991,672 | — |
| — | President and CEO | 373,315 | — |
| — | President and Chief Executive | 364,305 | — |
| — | Chief Financial & Bus. Officer | 226,715 | — |
| — | Director | 172,622 | — |
| — | Director | 126,121 | — |
| — | CFO and CBO | 91,779 | — |
| — | Director | 91,622 | — |
| — | Chief Legal Off. & Corp. Sec. | 88,660 | — |
| — | Principal Accounting Officer | 67,656 | — |
| — | Director | 63,920 | — |
| — | Director | 54,122 | — |
| — | Director | 54,122 | — |
| — | Director | 45,122 | — |
| — | VP, Chief Accounting Officer | 8,862 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the PHAT quote page; the site-wide leaderboard is on the insider transactions hub.