Phathom Pharmaceuticals's top three insider shareholders as of August 29, 2026 are Pharmaceutical Co Ltd Takeda (TenPercentOwner, 3.76Mn shares), David A Socks (Director, 1.21Mn shares), David A Socks (Director, 1.21Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Pharmaceutical Co Ltd Takeda | TenPercentOwner | 3,755,583 | 0 | 3,755,583 | 61.3% | 25 Jan, 2024 |
| 2 | Azmi Nabulsi | Chief Operating Officer | 562,157 | 0 | 562,157 | 9.2% | 03 Mar, 2025 |
| 3 | Steven L Basta | President And Ceo | 373,315 | 0 | 373,315 | 6.1% | 12 Feb, 2026 |
| 4 | Terrie Curran | President And Chief Executive | 360,465 | 0 | 360,465 | 5.9% | 23 Jan, 2025 |
| 5 | Sanjeev Narula | Chief Financial Bus. Officer | 226,715 | 0 | 226,715 | 3.7% | 02 Jan, 2026 |
| 6 | Molly Henderson | Cfo And Cbo | 192,631 | 0 | 192,631 | 3.1% | 08 Apr, 2025 |
| 7 | Asit Parikh | Director | 10,500 | 120,500 | 131,000 | 2.1% | 11 Mar, 2026 |
| 8 | Anne Marie Cook | Chief Legal Off. Corp. Sec. | 88,660 | 0 | 88,660 | 1.4% | 12 Feb, 2026 |
| 9 | Frank Karbe | Director | 67,500 | 0 | 67,500 | 1.1% | 05 Jun, 2025 |
| 10 | James N Topper | Director, TenPercentOwner | 66,718 | 0 | 66,718 | 1.1% | 21 May, 2026 |
| 11 | Michael F Cola | Director | 63,920 | 0 | 63,920 | 1.0% | 21 May, 2026 |
| 12 | Robert Charles Breedlove | Principal Accounting Officer | 59,925 | 0 | 59,925 | 1.0% | 16 Jul, 2026 |
| 13 | Mark Stenhouse | Director | 54,122 | 0 | 54,122 | 0.9% | 21 May, 2026 |
| 14 | Heidi Fields | Director | 54,122 | 0 | 54,122 | 0.9% | 21 May, 2026 |
| 15 | Theodore R Schroeder | Director | 45,122 | 0 | 45,122 | 0.7% | 21 May, 2026 |
| 16 | David A Socks | Director | 19,500 | 0 | 19,500 | 0.3% | 24 May, 2024 |
| 17 | Anthony J. Guzzo | Vp, Chief Accounting Officer | 8,399 | 0 | 8,399 | 0.1% | 21 Jan, 2022 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 14 Jul, 2026 | Robert Charles Breedlove | Principal Accounting Officer | Disposed F | 1,555 | $11.04 | $17.16K | 59,925 | Direct |
| 19 May, 2026 | Theodore R Schroeder | Director | Acquired A | 24,122 | $0.00 | $0 | 45,122 | Direct |
| 19 May, 2026 | Heidi Fields | Director | Acquired A | 24,122 | $0.00 | $0 | 54,122 | Direct |
| 19 May, 2026 | James N Topper | Director, TenPercentOwner | Acquired A | 24,122 | $0.00 | $0 | 66,718 | Direct |
| 19 May, 2026 | Mark Stenhouse | Director | Acquired A | 24,122 | $0.00 | $0 | 54,122 | Direct |
| 19 May, 2026 | Michael F Cola | Director | Acquired A | 24,122 | $0.00 | $0 | 63,920 | Direct |
| 10 Mar, 2026 | Asit Parikh | Director | Disposed G | 40,000 | $0.00 | $0 | 10,500 | Direct |
| 10 Mar, 2026 | Asit Parikh | Director | Acquired G | 40,000 | $0.00 | $0 | 120,500 | Indirect |
| 27 Feb, 2026 | Robert Charles Breedlove | Principal Accounting Officer | Acquired A | 13,000 | $0.00 | $0 | 60,068 | Direct |
| 27 Feb, 2026 | Robert Charles Breedlove | Principal Accounting Officer | Acquired A | 2,790 | $0.00 | $0 | 62,858 | Direct |
| 27 Feb, 2026 | Robert Charles Breedlove | Principal Accounting Officer | Disposed F | 964 | $12.56 | $12.11K | 61,894 | Direct |
| 27 Feb, 2026 | Robert Charles Breedlove | Principal Accounting Officer | Disposed F | 414 | $12.56 | $5.20K | 61,480 | Direct |
| 10 Feb, 2026 | Anne Marie Cook | Chief Legal Off. Corp. Sec. | Acquired A | 3,461 | $0.00 | $0 | 90,195 | Direct |
| 10 Feb, 2026 | Steven L Basta | President And Ceo | Acquired A | 12,362 | $0.00 | $0 | 379,592 | Direct |
| 10 Feb, 2026 | Anne Marie Cook | Chief Legal Off. Corp. Sec. | Disposed F | 1,535 | $12.82 | $19.68K | 88,660 | Direct |
| 10 Feb, 2026 | Steven L Basta | President And Ceo | Disposed F | 6,277 | $12.82 | $80.47K | 373,315 | Direct |
| 23 Jan, 2026 | Asit Parikh | Director | Disposed G | 80,500 | $0.00 | $0 | 50,500 | Direct |
| 23 Jan, 2026 | Asit Parikh | Director | Acquired G | 80,500 | $0.00 | $0 | 80,500 | Indirect |
| 21 Jan, 2026 | Robert Charles Breedlove | Principal Accounting Officer | Disposed F | 776 | $13.61 | $10.56K | 47,068 | Direct |
| 13 Jan, 2026 | Asit Parikh | Director | Acquired M | 8,750 | $10.30 | $90.13K | 131,000 | Direct |