Acumen Pharmaceuticals Inc. (ABOS)

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Sector: Biological Products, (No Disgnostic Substances)

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Hedge Fund Holdings

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Last updated on November 26, 2025, 11:13am based on SEC 13F filings Last update: November 26, 2025, 11:13am

No.	Hedge Fund	Shares	Value	Activity	% Port
1.	RA Capital Management Peter Kolchinsky	14,932,063	$25,533,828		0.31%
2.	Alyeska Investment Group Anand Parekh	939,603	$1,606,721		0%
3.	ADAR1 Capital Management Daniel Schneeberger	891,183	$1,523,923	-3%	0.14%
4.	Laurion Capital Management Benjamin A. Smith	867,046	$1,482,649		0.03%
5.	Hudson Bay Capital Management Sander Gerber	725,004	$1,239,757	-13%	0%

Insider Trading: Purchases See All

Insider	Price	Amount	Total Value	Remaining Holdings	Date	Form 4
Ra Large Shareholder, Director	$7.75	5,161,290	$39,999,997.50	13,043,179	2023-07-21	Filing
Stalfort Director	$16.00	35,000	$560,000.00	172,324	2021-07-06	Filing
Hardie Large Shareholder	$16.00	312,500	$5,000,000.00	3,352,693	2021-07-06	Filing
Hardie Large Shareholder	$16.00	750,000	$12,000,000.00	3,951,156	2021-07-06	Filing
Fountain Director	$16.00	6,250	$100,000.00	6,250	2021-07-06	Filing

Insider Trading: Sales See All

Insider	Price	Amount	Total Value	Remaining Holdings	Date	Form 4
Zuga Officer	$1.82	6,888	$12,512.74	209,951	2026-01-08	Filing
Barton Officer	$1.86	3,530	$6,561.56	123,269	2026-01-08	Filing
Meisner Officer	$1.71	8,548	$14,658.11	83,800	2026-01-12	Filing
Meisner Officer	$1.76	5,200	$9,169.16	92,348	2026-01-09	Filing
Meisner Officer	$1.82	30,092	$54,866.74	97,548	2026-01-08	Filing

Institutional Investors' Holdings

Filing Period: Filing is Ongoing

No.	Name	Shares	Value	% Port
1.	Nisa Investment Advisors, Llc	1,229	$2,593	0%
2.	Sg Americas Securities, Llc	401,047	$846	0%
3.	Flagship Harbor Advisors, Llc	350	$739	0%