Phathom Pharmaceuticals, Inc. (PHAT)
$9.18+$0.24 (+2.66%) Today
Phathom Pharmaceuticals Inc operates as a clinical-stage biopharmaceutical company. The firm is focused on developing and commercializing novel treatments for gastrointestinal, or GI, diseases. Its product comprises vonoprazan, an oral small-molecule potassium competitive acid blocker medicine that blocks acid secretion in the stomach. Vonoprazan shows rapid, potent, and durable anti-secretory effects and has demonstrated clinical benefits in the treatment of gastroesophageal reflux disease, and in combination with antibiotics for the treatment of Helicobacter pylori infection.
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Tax withholding / forfeiture | 1 | 1,555 |
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
36 Form 4 filings on record, the earliest from Dec 16, 2024, newest first. Filing history page 1 of 2.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Robert Charles Breedlove - Officer | Tax withholding / forfeiture | Common Stock | 1,555 | $11.04 | $17K | |
| Asit Parikh | Gift | Common Stock | 28,000 | $0.00 | - | |
| Asit Parikh | Gift | Common Stock | 28,000 | $0.00 | - | |
| Asit Parikh | Option exercise | Common Stock | 17,500 | $4.95 | $87K | |
| Asit Parikh | Derivative | Common Stock (Right to Buy) | 17,500 | $0.00 | - | |
| Asit Parikh | Grant or award | Common Stock | 24,122 | $0.00 | - | |
 James N. Topper | Grant or award | Common Stock | 24,122 | $0.00 | - | |
| Mark Stenhouse | Grant or award | Common Stock | 24,122 | $0.00 | - | |
| Heidi Fields | Grant or award | Common Stock | 24,122 | $0.00 | - | |
| Michael F. Cola | Grant or award | Common Stock | 24,122 | $0.00 | - | |
| Frank Karbe | Grant or award | Common Stock | 24,122 | $0.00 | - | |
| Theodore R. Schroeder | Grant or award | Common Stock | 24,122 | $0.00 | - | |
| Asit Parikh | Gift | Common Stock | 40,000 | $0.00 | - | |
| Asit Parikh | Gift | Common Stock | 40,000 | $0.00 | - | |
| Robert Charles Breedlove - Officer | Tax withholding / forfeiture | Common Stock | 414 | $12.56 | $5K | |
| Robert Charles Breedlove - Officer | Grant or award | Common Stock | 13,000 | $0.00 | - | |
| Robert Charles Breedlove - Officer | Grant or award | Common Stock | 2,790 | $0.00 | - | |
| Robert Charles Breedlove - Officer | Tax withholding / forfeiture | Common Stock | 964 | $12.56 | $12K | |
| Anne Marie Cook - Officer | Grant or award | Common Stock | 3,461 | $0.00 | - | |
| Anne Marie Cook - Officer | Tax withholding / forfeiture | Common Stock | 1,535 | $12.82 | $20K | |
 Steven L. Basta - Officer | Grant or award | Common Stock | 12,362 | $0.00 | - | |
| Steven L. Basta - Officer | Tax withholding / forfeiture | Common Stock | 6,277 | $12.82 | $80K | |
| Asit Parikh | Gift | Common Stock | 80,500 | $0.00 | - | |
| Asit Parikh | Gift | Common Stock | 80,500 | $0.00 | - | |
| Robert Charles Breedlove - Officer | Tax withholding / forfeiture | Common Stock | 776 | $13.61 | $11K | |
| Asit Parikh | Option exercise | Common Stock | 8,750 | $10.30 | $90K | |
| Asit Parikh | Option exercise | Common Stock (Right to Buy) | 8,750 | $0.00 | - | |
| Steven L. Basta - Officer | Grant or award | Common Stock | 251,034 | $0.00 | - | |
| Steven L. Basta - Officer | Grant or award | Stock Option (Right to Buy) | 226,156 | $0.00 | - | |
| Anne Marie Cook - Officer | Grant or award | Common Stock | 75,345 | $0.00 | - | |
| Anne Marie Cook - Officer | Grant or award | Stock Option (Right to Buy) | 67,878 | $0.00 | - | |
 Sanjeev Narula - Officer | Grant or award | Common Stock | 82,715 | $0.00 | - | |
| Sanjeev Narula - Officer | Grant or award | Stock Option (Right to Buy) | 42,848 | $0.00 | - | |
| Asit Parikh | Option exercise | Common Stock | 8,750 | $10.30 | $90K | |
| Asit Parikh | Option exercise | Common Stock (Right to Buy) | 8,750 | $0.00 | - | |
| Robert Charles Breedlove - Officer | Tax withholding / forfeiture | Common Stock | 230 | $16.28 | $4K | |
| Anne Marie Cook - Officer | Grant or award | Common Stock | 17,370 | $0.00 | - | |
| Anne Marie Cook - Officer | Tax withholding / forfeiture | Common Stock | 7,703 | $15.36 | $118K | |
| Steven L. Basta - Officer | Grant or award | Common Stock | 62,038 | $0.00 | - | |
| Steven L. Basta - Officer | Tax withholding / forfeiture | Common Stock | 31,502 | $15.36 | $484K | |
| Steven L. Basta - Officer | Option exercise | Common Stock | 90,000 | $0.00 | - | |
| Steven L. Basta - Officer | Tax withholding / forfeiture | Common Stock | 48,375 | $15.62 | $756K | |
| Steven L. Basta - Officer | Option exercise | Performance Shares | 90,000 | $0.00 | - | |
| Robert Charles Breedlove - Officer | Open-market sale | Common Stock | 524 | $13.51 | $7K | |
| Sanjeev Narula - Officer | Grant or award | Stock Option (Right to Buy) | 200,000 | $0.00 | - | |
| Steven L. Basta - Officer | Option exercise | Common Stock | 90,000 | $0.00 | - | |
| Steven L. Basta - Officer | Tax withholding / forfeiture | Common Stock | 48,375 | $11.66 | $564K | |
| Steven L. Basta - Officer | Option exercise | Performance Shares | 90,000 | $0.00 | - | |
| Robert Charles Breedlove - Officer | Open-market sale | Common Stock | 461 | $12.09 | $6K | |
| Robert Charles Breedlove - Officer | Open-market sale | Common Stock | 1,692 | $8.36 | $14K | |
| Michael F. Cola | Grant or award | Common Stock | 10,500 | $0.00 | - | |
| Michael F. Cola | Grant or award | Stock Option (Right to Buy) | 17,500 | $0.00 | - |
Phathom Pharmaceuticals, Inc. (PHAT) had 1 insider filing in the last 90 days, with the most recent on 2026-07-16. The full record for PHAT runs to 36 Form 4 filings, the earliest from 2024-12-16. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
No insider purchases of PHAT were filed in the last 90 days. 2 purchases are on record for this company.
No insider sales of PHAT were filed in the last 90 days. 5 sales are on record for this company.
This page tracks PHAT Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
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