PHAT — PHATHOM PHARMACEUTICALS INC

Ownership history in StepStone Group LP  ·  18 quarters on record

This page tracks every 13F SEC filing in which StepStone Group LP reported a position in PHATHOM PHARMACEUTICALS INC (PHAT). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Peak position
8.03% (2025 Q2)
Avg. % of fund
1.67%
First filed
2021 Q3
Last filed
2025 Q4
Quarters held
18
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q4 UNCHANGED 422,085 — 0% 2.66% $5.0M $16.59
2025 Q3 UNCHANGED 422,085 — 0% 2.34% $5.0M $11.77
2025 Q2 UNCHANGED 422,085 — 0% 8.03% $4.0M $9.59
2025 Q1 UNCHANGED 422,085 — 0% 2.72% $2.6M $6.27
14 older quarters hidden  —  Sign in free or upgrade to Premium to see full history
% of Fund (quarterly)    PHAT price (monthly, adj. close)

Other funds also holding PHAT

As of 2025 Q4 — sorted by position size

Medicxi Ventures Management (Jersey) Ltd 3Y 14.83% Propel Bio Management, LLC 10.49% Catalys Pacific, LLC 7.63% Frazier Life Sciences Management, L.P. 3Y 5.55% Catalio Capital Management, LP 2.05% Birchview Capital, LP 3Y 7Y 1.89% NEA Management Company, LLC 3Y 7Y 1.66% 683 Capital Management, LLC 3Y 7Y 1.29% Avidity Partners Management LP 3Y 0.99% Penn Mutual Asset Management 3Y 7Y 0.62%
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