Phathom Pharmaceuticals, Inc. PHAT
We take great care to ensure that the data presented and summarized in this overview for Phathom Pharmaceuticals, Inc. is accurate and up-to-date, based on a comprehensive analysis of 13F filing forms for institutional ownership and form 4 filings for insider transactions. Please note that this data may differ from other sources and should not be relied upon as the sole basis for investment decisions.
Top Institutions Holding PHAT
View all-
Frazier Life Sciences Management, L.P. Menlo Park, CA12.5MShares$183 Million6.03% of portfolio
-
Medicxi Ventures Management (Jersey) LTD7.46MShares$110 Million12.93% of portfolio
-
Israel Englander Millennium Management LLC | New York, Ny5.08MShares$74.6 Million0.03% of portfolio
-
Invesco Ltd. Atlanta, GA3.86MShares$56.8 Million0.01% of portfolio
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Carlyle Group Inc. Washington, DC3.5MShares$51.4 Million50.16% of portfolio
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Vanguard Group Inc Valley Forge, PA3.22MShares$47.2 Million0.0% of portfolio
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Black Rock Inc. New York, NY2.93MShares$43 Million0.0% of portfolio
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Ensign Peak Advisors, Inc Salt Lake City, UT2.5MShares$36.8 Million0.05% of portfolio
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Nea Management Company, LLC Timonium, MD1.96MShares$28.8 Million1.4% of portfolio
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683 Capital Management, LLC New York, NY1.82MShares$26.7 Million1.23% of portfolio
Latest Institutional Activity in PHAT
Top Purchases
Top Sells
About PHAT
Phathom Pharmaceuticals, Inc., a clinical-stage biopharmaceutical company, focuses on developing and commercializing treatments for gastrointestinal diseases. The company has the rights in the United States, Europe, and Canada to vonoprazan, a potassium-competitive acid blocker (P-CAB) that blocks acid secretion in the stomach. It is also developing vonoprazan, which is in Phase III clinical trials for the treatment of erosive gastroesophageal reflux disease; and in combination with antibiotics for the treatment of Helicobacter pylori infection. Phathom Pharmaceuticals, Inc. was incorporated in 2018 and is headquartered in Florham Park, New Jersey.
Insider Transactions at PHAT
Insider Transaction List
View all| Date | Insider | Transaction | Ownership Type | Shares Traded | Value / Price |
|---|---|---|---|---|---|
|
Nov 28
2025
|
Steven L Basta President and CEO |
SELL
Payment of exercise price or tax liability
|
Direct |
48,375
-36.75%
|
$725,625
$15.62 P/Share
|
|
Nov 28
2025
|
Steven L Basta President and CEO |
BUY
Exercise of conversion of derivative security
|
Direct |
90,000
+40.61%
|
-
|
|
Nov 03
2025
|
Robert Charles Breedlove Principal Accounting Officer |
SELL
Open market or private sale
|
Direct |
524
-1.09%
|
$6,812
$13.51 P/Share
|
|
Sep 25
2025
|
Steven L Basta President and CEO |
SELL
Payment of exercise price or tax liability
|
Direct |
48,375
-53.75%
|
$532,125
$11.66 P/Share
|
|
Sep 25
2025
|
Steven L Basta President and CEO |
BUY
Exercise of conversion of derivative security
|
Direct |
90,000
+50.0%
|
-
|
|
Sep 05
2025
|
Robert Charles Breedlove Principal Accounting Officer |
SELL
Open market or private sale
|
Direct |
461
-0.95%
|
$5,532
$12.09 P/Share
|
|
Jul 16
2025
|
Robert Charles Breedlove Principal Accounting Officer |
SELL
Open market or private sale
|
Direct |
1,692
-3.38%
|
$13,536
$8.36 P/Share
|
|
Jun 03
2025
|
Mark Stenhouse |
BUY
Grant, award, or other acquisition
|
Direct |
10,500
+25.93%
|
-
|
|
Jun 03
2025
|
Heidi Fields |
BUY
Grant, award, or other acquisition
|
Direct |
10,500
+25.93%
|
-
|
|
Jun 03
2025
|
James N Topper |
BUY
Grant, award, or other acquisition
|
Direct |
10,500
+19.78%
|
-
|
|
Jun 03
2025
|
Michael F Cola |
BUY
Grant, award, or other acquisition
|
Direct |
10,500
+20.88%
|
-
|
|
Jun 03
2025
|
Frank Karbe |
BUY
Grant, award, or other acquisition
|
Direct |
10,500
+13.46%
|
-
|
|
Jun 03
2025
|
Asit Parikh |
BUY
Grant, award, or other acquisition
|
Direct |
10,500
+8.47%
|
-
|
|
May 21
2025
|
James N Topper |
BUY
Open market or private purchase
|
Indirect |
3,780
+5.98%
|
$11,340
$3.86 P/Share
|
|
May 14
2025
|
James N Topper |
BUY
Open market or private purchase
|
Indirect |
6,300
+10.17%
|
$18,900
$3.32 P/Share
|
|
May 13
2025
|
James N Topper |
BUY
Open market or private purchase
|
Indirect |
1,120
+2.22%
|
$3,360
$3.16 P/Share
|
|
May 12
2025
|
James N Topper |
BUY
Open market or private purchase
|
Indirect |
12,601
+20.72%
|
$37,803
$3.04 P/Share
|
|
May 09
2025
|
James N Topper |
BUY
Open market or private purchase
|
Indirect |
35,602
+27.94%
|
$106,806
$3.41 P/Share
|
|
May 07
2025
|
Asit Parikh |
BUY
Open market or private purchase
|
Direct |
5,000
+4.98%
|
$10,000
$2.4 P/Share
|
|
May 06
2025
|
Asit Parikh |
BUY
Open market or private purchase
|
Direct |
5,000
+5.24%
|
$10,000
$2.6 P/Share
|
Last 12 Months Summary
| Grant, award, or other acquisition | 235K shares |
|---|---|
| Exercise of conversion of derivative security | 180K shares |
| Open market or private purchase | 79.4K shares |
| Payment of exercise price or tax liability | 96.8K shares |
|---|---|
| Open market or private sale | 42.3K shares |