Acumen Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share (ABOS)

Q: What does CUSIP 00509G209 represent in this 13F holders report?

CUSIP 00509G209 is the security identifier for ABOS - Acumen Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share used to aggregate holder disclosures.

Q: How many institutions held ABOS - Acumen Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share in Q4 2022?

59 institutional investors reported ABOS - Acumen Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share for Q4 2022. Use the holders table for investor-level position and value details.

CUSIP: 00509G209

Q4 2022 13F Holders as of 31 Dec 2022

Security type / class: Equity / Common Stock, $0.0001 par value per share
Total 13F shares: 28,727,743
Total 13F value: $155,145,749
Share change: -469,296
Put/Call ratio: 19%
SEC-reported price per share: $5.40
Number of holders: 59
Value change: -$5,374,332
Number of buys: 35
Number of sells: 24
Shares outstanding: 72,227,200

Security key

00509G209

Report period

Q4 2022

Institutions

Top holders

ABOS full security history Ownership snapshot Full 13F holder table Newer quarter: Q1 2023 Previous quarter: Q3 2022 Acumen Pharmaceuticals, Inc. SEC filings Acumen Pharmaceuticals, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 00509G209

Newer quarter: Q1 2023 Previous quarter: Q3 2022

Recent filing periods:

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024

Ownership snapshot

Top reported holders of ABOS - Acumen Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

RA CAPITAL MANAGEMENT, L.P.

Disclosed value leader

RA CAPITAL MANAGEMENT, L.P.

Comparable rows

15/15

Latest evidence

30 Sep 2022

13F Lead comparable stake: 14% Showing 1-6 of 15 holder rows.

Quick read

RA CAPITAL MANAGEMENT, L.P. leads the comparable SEC ownership view at 14%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens RA CAPITAL MANAGEMENT, L.P.'s linked filing trail.

Comparable ownership Top 5

RA CAPITAL MANAGEMENT, L.P. 14%

Deep Track Capital, LP 5.2%

Sands Capital Alternatives, LLC 4.7%

Laurion Capital Management LP 1.7%

GREAT POINT PARTNERS LLC 1.7%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
RA CAPITAL MANAGEMENT, L.P.	13F Company 13F	14%	$98,001,000 9,770,773 shares	—	30 Sep 2022
Deep Track Capital, LP	13F Company 13F	5.2%	$37,902,000 3,778,818 shares	—	30 Sep 2022
Sands Capital Alternatives, LLC	13F Company 13F	4.7%	$34,273,000 3,417,075 shares	—	30 Sep 2022
Laurion Capital Management LP	13F Company 13F	1.7%	$12,101,000 1,206,548 shares	—	30 Sep 2022
GREAT POINT PARTNERS LLC	13F Company 13F	1.7%	$12,036,000 1,200,000 shares	—	30 Sep 2022
BlackRock Finance, Inc.	13F Company 13F	1.5%	$11,184,000 1,115,027 shares	—	30 Sep 2022

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q4 2022

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

28,727,743

Rows available

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q4 2022 vs Q3 2022 Across Filers

Q3 2022 holders

Q4 2022 holders

Holder diff

Investor	Q3 2022 Shares	Q4 2022 Shares	Share Diff	Share Chg %	Q3 2022 value	Q4 2022 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend