Acumen Pharmaceuticals Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGS:ABOS Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Role	Shares	Max Price
21 Jul 23	BuyUS$39,999,998	RA Capital Management, L.P.	Company		5,161,290	US$7.75

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Dilution of Shares: Shareholders have been diluted in the past year, with total shares outstanding growing by 46.4%.

Top 25 shareholders own 81.03% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
24.9%	RA Capital Management, L.P.	14,932,063	US$48.1m	0%	0.66%
5.74%	Robert Hardie	3,451,152	US$11.1m	0%	no data
5.69%	Sands Capital Ventures, LLC	3,417,075	US$11.0m	0%	3.31%
5.54%	Franklin Resources, Inc.	3,327,809	US$10.7m	18.5%	no data
4.24%	Paul Manning	2,547,143	US$8.2m	0%	no data
4.22%	James Murray	2,538,162	US$8.2m	-1.66%	no data
3.83%	Rock Springs Capital Management LP	2,300,059	US$7.4m	-18.2%	0.21%
3.15%	Laurion Capital Management LP	1,895,023	US$6.1m	0%	0.22%
3.06%	The Vanguard Group, Inc.	1,839,552	US$5.9m	-0.92%	no data
2.87%	H7 Holdings, LLC	1,725,576	US$5.6m	0%	100.0%
2.87%	Level One Partners LLC	1,725,576	US$5.6m	0%	100.0%
2.71%	Knollwood Investment Advisory, LLC	1,628,510	US$5.2m	0%	0.98%
2.49%	Millennium Management LLC	1,495,284	US$4.8m	-12.9%	no data
1.22%	Alyeska Investment Group, L.P.	733,203	US$2.4m	19.5%	0.02%
1.1%	Tiger Lily Capital	657,985	US$2.1m	0%	no data
1.01%	Jane Street Group, LLC, Asset Management Arm	604,620	US$1.9m	3,500%	no data
1%	Parkman Healthcare Partners LLC	603,497	US$1.9m	20.7%	0.27%
0.94%	Hudson Bay Capital Management LP	564,400	US$1.8m	7.5%	0.02%
0.93%	Schonfeld Strategic Advisors LLC	561,542	US$1.8m	-13%	0.01%
0.87%	Susquehanna International Group, LLP, Asset Management Arm	521,697	US$1.7m	193%	no data
0.8%	Pathstone Family Office, LLC	479,149	US$1.5m	0.07%	0.01%
0.52%	Ikarian Capital, LLC	315,265	US$1.0m	0%	0.26%
0.51%	Sean Stalfort	303,919	US$978.6k	0%	no data
0.44%	Geode Capital Management, LLC	264,603	US$852.0k	0%	no data
0.41%	BlackRock, Inc.	248,095	US$798.9k	-57.5%	no data