WATER ISLAND CAPITAL LLC

Position in APGE — Apogee Therapeutics, Inc.

CIK 1222765 NEW YORK, NY

Position in APGE

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$12,596,077

New position

Shares Held

94,900

first reported quarter

Ownership

0.125%

of shares outstanding

% of Portfolio

1.83%

of 13F equity value

Holder Rank

#78

of 285 holders

Holding Since

Jun 2026

1 quarter on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

WATER ISLAND CAPITAL LLC holds $37,326,339 across 7 Biotechnology names. APGE ranks #2 (33.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	TECH	BIO-TECHNE Corp	335,727	$23,719,112
2	APGE	Apogee Therapeutics, Inc. This page	94,900	$12,596,077
3	VKTX	Viking Therapeutics, Inc.	15,000	$585,150
4	AURA	Aura Biosciences, Inc.	60,000	$426,000
5			933,819	$0
6			242,000	$0
7			103,979	$0

1 filing row on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$12,596,077	94,900	—	Shares	Sole	2026-08-14
No filing history on record for this holder in this stock.