Institutional shares held 66.6 Million
94K calls
55.5K puts
Total value of holdings $584M
$824K calls
$486K puts
Market Cap $344M
39,175,200 Shares Out.
Institutional ownership 169.92%
# of Institutions 151


Latest Institutional Activity in PHAT

Top Purchases

Q2 2025
Kera Capital Partners, Inc. Shares Held: 30.1K ($264K)
Q1 2025
Tang Capital Management LLC Shares Held: 1.2M ($10.5M)
Q1 2025
Jacobs Levy Equity Management, Inc Shares Held: 596K ($5.23M)
Q1 2025
Citigroup Inc Shares Held: 531K ($4.66M)
Q1 2025
Millennium Management LLC Shares Held: 523K ($4.59M)

Top Sells

Q2 2025
Farther Finance Advisors, LLC Shares Held: 342 ($3K)
Q2 2025
Parallel Advisors, LLC Shares Held: 186 ($1.63K)
Q2 2025
Inspirion Wealth Advisors, LLC Shares Held: 19.8K ($174K)
Q1 2025
Avidity Partners Management LP Shares Held: 800K ($7.02M)
Q1 2025
Two Sigma Investments, LP Shares Held: 97.3K ($854K)

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

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
345K Shares
From 13 Insiders
Grant, award, or other acquisition 235K shares
Open market or private purchase 102K shares
Exercise of conversion of derivative security 7.5K shares
Sell / Disposition
88.7K Shares
From 3 Insiders
Open market or private sale 88.7K shares

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