SLDB — Solid Biosciences 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 Solid Biosciences Inc (SLDB). 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

1.87% (2025 Q2)

Avg. % of fund

1.36%

First filed

2024 Q3

Last filed

2025 Q4

Quarters held

6

Quarter	Action	Shares	Change	Chg %	% of Fund	Mkt Value	Price (EOQ)
2025 Q4	ADDED	7,690,405	+274,500	+3.7%	1.29%	$43.4M	$5.64
2025 Q3	UNCHANGED	7,415,905	—	0%	1.79%	$45.8M	$6.17
2025 Q2	UNCHANGED	7,415,905	—	0%	1.87%	$36.1M	$4.87
2025 Q1	ADDED	7,415,905	+3,666,864	+97.8%	1.56%	$27.4M	$3.70

% of Fund (quarterly) SLDB price (monthly, adj. close)

Other funds also holding SLDB

As of 2025 Q4 — sorted by position size

Monashee Investment Management LLC 3Y 7Y 4.29% Bain Capital Life Sciences Investors, LLC 3Y 7Y 3.42% Ally Bridge Group (NY) LLC 3Y 2.43% Birchview Capital, LP 3Y 7Y 2.33% PERCEPTIVE ADVISORS LLC 3Y 7Y 1.19% Vestal Point Capital, LP 1.12% Redmile Group, LLC 3Y 7Y 0.77% Knott David M Jr 3Y 0.42% RA CAPITAL MANAGEMENT, L.P. 3Y 7Y 0.34% Nantahala Capital Management, LLC 3Y 7Y 0.3%

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