RAPP — Rapport Therapeutics Inc

Ownership history in Siren, L.L.C.  ·  6 quarters on record

This page tracks every 13F SEC filing in which Siren, L.L.C. reported a position in Rapport Therapeutics Inc (RAPP). 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
1.22% (2025 Q3)
Avg. % of fund
0.5%
First filed
2024 Q3
Last filed
2025 Q4
Quarters held
6
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q4 REDUCED 708,469 -345,000 -32.7% 0.64% $21.5M $30.34
2025 Q3 ADDED 1,053,469 +675,000 +178.4% 1.22% $31.3M $29.70
2025 Q2 UNCHANGED 378,469 — 0% 0.22% $4.3M $11.37
2025 Q1 REDUCED 378,469 -5,728 -1.5% 0.22% $3.8M $10.03
2 older quarters hidden  —  Sign in free or upgrade to Premium to see full history
% of Fund (quarterly)    RAPP price (monthly, adj. close)

Other funds also holding RAPP

As of 2025 Q4 — sorted by position size

TRV GP V, LLC 50.44% TRV GP VI, LLC 19.8% ARCH Venture Management, LLC 3Y 7Y 17.36% JOHNSON & JOHNSON 3Y 9.76% Cormorant Asset Management, LP 3Y 7Y 4.25% Sofinnova Investments, Inc. 3Y 7Y 2.49% Vestal Point Capital, LP 1.14% SECTORAL ASSET MANAGEMENT INC 3Y 7Y 0.95% Sio Capital Management, LLC 3Y 7Y 0.88% Artia Global Partners LP 3Y 0.6%
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