Data spanning the past 90 days through February 07, 2026 reveals that Phathom Pharmaceuticals's three principal insider shareholders consist of TenPercentOwner Pharmaceutical Co Ltd Takeda (3.76Mn shares), Director David A Socks (1.23Mn shares), Chief Operating Officer Azmi Nabulsi (1.10Mn shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Pharmaceutical Co Ltd Takeda | 3,755,583 | 25 Jan, 2024 | |
| David A Socks | 1,230,846 | 24 May, 2024 | |
| Azmi Nabulsi | Chief Operating Officer | 1,098,290 | 03 Mar, 2025 |
| Steven L Basta | President And Ceo | 364,820 | 02 Jan, 2026 |
| Terrie Curran | President And Chief Executive | 360,465 | 23 Jan, 2025 |
| Sanjeev Narula | Chief Financial & Bus. Officer | 226,715 | 02 Jan, 2026 |
| Asit Parikh | 131,000 | 27 Jan, 2026 | |
| James N Topper | 101,999 | 05 Jun, 2025 | |
| Molly Henderson | Cfo And Cbo | 89,868 | 08 Apr, 2025 |
| Anne Marie Cook | Chief Legal Off. & Corp. Sec. | 85,012 | 02 Jan, 2026 |
| Frank Karbe | 67,500 | 05 Jun, 2025 | |
| Robert Charles Breedlove | Principal Accounting Officer | 47,068 | 23 Jan, 2026 |
| Michael F Cola | 39,798 | 05 Jun, 2025 | |
| Mark Stenhouse | 30,000 | 05 Jun, 2025 | |
| Heidi Fields | 30,000 | 05 Jun, 2025 | |
| Theodore R Schroeder | 21,000 | 16 Apr, 2025 | |
| Anthony J. Guzzo | Vp And Chief Accounting Officer | 8,399 | 21 Jan, 2022 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 23 Jan, 2026 | Asit Parikh | Common Stock | A | 80,500 | $0.00 | 80,500 | I | G |
| 23 Jan, 2026 | Asit Parikh | Common Stock | D | 80,500 | $0.00 | 50,500 | D | G |
| 21 Jan, 2026 | Robert Charles Breedlove | Common Stock | D | 776 | $13.61 | 47,068 | D | F |
| 13 Jan, 2026 | Asit Parikh | Common Stock | A | 8,750 | $10.30 | 131,000 | D | M |
| 02 Jan, 2026 | Anne Marie Cook | Common Stock | A | 75,345 | $0.00 | 85,012 | D | A |
| 02 Jan, 2026 | Steven L Basta | Common Stock | A | 251,034 | $0.00 | 364,820 | D | A |
| 02 Jan, 2026 | Sanjeev Narula | Common Stock | A | 82,715 | $0.00 | 226,715 | D | A |
| 19 Dec, 2025 | Asit Parikh | Common Stock | A | 8,750 | $10.30 | 122,250 | D | M |
| 18 Dec, 2025 | Robert Charles Breedlove | Common Stock | D | 230 | $16.28 | 47,844 | D | F |
| 17 Dec, 2025 | Anne Marie Cook | Common Stock | A | 17,370 | $0.00 | 17,370 | D | A |
| 17 Dec, 2025 | Anne Marie Cook | Common Stock | D | 7,703 | $15.36 | 9,667 | D | F |
| 17 Dec, 2025 | Steven L Basta | Common Stock | D | 31,502 | $15.36 | 113,786 | D | F |
| 17 Dec, 2025 | Steven L Basta | Common Stock | A | 62,038 | $0.00 | 145,288 | D | A |
| 28 Nov, 2025 | Steven L Basta | Common Stock | A | 90,000 | $0.00 | 131,625 | D | M |
| 28 Nov, 2025 | Steven L Basta | Common Stock | D | 48,375 | $15.62 | 83,250 | D | F |
| 03 Nov, 2025 | Robert Charles Breedlove | Common Stock | D | 524 | $13.51 | 47,407 | D | S |
| 06 Oct, 2025 | Sanjeev Narula | Common Stock | A | 144,000 | $0.00 | 144,000 | D | A |
| 25 Sep, 2025 | Steven L Basta | Common Stock | D | 48,375 | $11.66 | 41,625 | D | F |
| 25 Sep, 2025 | Steven L Basta | Common Stock | A | 90,000 | $0.00 | 90,000 | D | M |
| 05 Sep, 2025 | Robert Charles Breedlove | Common Stock | D | 461 | $12.09 | 47,931 | D | S |