Brummer Multi-Strategy AB

Position in ATAI — AtaiBeckley Inc.

CIK 2003159 STOCKHOLM, V7

Position in ATAI

as of Mar 31, 2026 · filed May 6, 2026 Compact

Position Value

$974,947

New position

Shares Held

275,409

first reported quarter

Ownership

0.075%

of shares outstanding

% of Portfolio

4.06%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2026

1 quarter on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Healthcare · as of Mar 31, 2026

Brummer Multi-Strategy AB holds $8,644,181 across 4 Biotechnology names. ATAI ranks #4 (11.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ARVN	Arvinas, Inc.	285,076	$3,021,805
2	ABVX	Abivax S.A.	22,428	$2,497,357
3	MRVI	Maravai Lifesciences Holdings, Inc.	759,743	$2,150,072
4	ATAI	AtaiBeckley Inc. This page	275,409	$974,947

1 filing row on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$974,947	275,409	—	Shares	Sole	2026-05-06
No filing history on record for this holder in this stock.