O'Connor Alternative Investments LLC

Position in RNA — Atrium Therapeutics, Inc.

CIK 2081629 NEW YORK, NY

Position in RNA

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$7,728,007

New position

Shares Held

578,011

first reported quarter

Ownership

3.38%

of shares outstanding

% of Portfolio

0.81%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2026

1 quarter on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Mar 31, 2026

O'Connor Alternative Investments LLC holds $169,882,927 across 3 Biotechnology names. RNA ranks #3 (4.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	FOLD	AMICUS THERAPEUTICS, INC.	8,444,992	$122,114,584
2	DAWN	Day One Biopharmaceuticals, Inc.	1,867,553	$40,040,336
3	RNA	Atrium Therapeutics, Inc. This page	578,011	$7,728,007

1 filing row on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$7,728,007	578,011	—	Shares	Defined	2026-05-15
No filing history on record for this holder in this stock.