NASDAQ: ABOS
Acumen Pharmaceuticals Inc Stock Ownership - Who owns Acumen Pharmaceuticals?

Insider buying vs selling

Have Acumen Pharmaceuticals Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Ra Capital Management LPDirector2026-03-166,060,606$3.30
$20.00MBuy
Derek M. MeisnerChief Legal Officer Corp Sec2026-03-062,090$3.26
$6.81kSell
Derek M. MeisnerChief Legal Officer Corp Sec2026-03-062,090$1.85
$3.87kBuy
Derek M. MeisnerChief Legal Officer Corp Sec2026-02-279,406$3.01
$28.31kSell
Derek M. MeisnerChief Legal Officer Corp Sec2026-02-279,406$1.85
$17.40kBuy
Derek M. MeisnerChief Legal Officer Corp Sec2026-01-282,671$3.00
$8.02kSell
Derek M. MeisnerChief Legal Officer Corp Sec2026-01-282,671$1.85
$4.94kBuy
Derek M. MeisnerChief Legal Officer Corp Sec2026-01-2615,085$3.00
$45.27kSell
Derek M. MeisnerChief Legal Officer Corp Sec2026-01-2615,085$1.85
$27.91kBuy
Derek M. MeisnerChief Legal Officer Corp Sec2026-01-235,633$1.90
$10.72kSell

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Net Insider Buy/Sell (L12M) Ownership

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ABOS Shareholders

What type of owners hold Acumen Pharmaceuticals Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Ra Capital Management LP20.68%14,932,063$37.03MInstitution
Robert D. Hardie5.34%3,859,141$9.57MInsider
Sands Capital Alternatives LLC4.73%3,417,075$8.47MInstitution
Sands Capital Ventures Discovery Fund III LP4.73%3,417,075$8.47MInsider
Franklin Resources Inc3.19%2,305,096$5.72MInstitution
Fmr LLC2.81%2,027,497$5.03MInstitution
Vanguard Group Inc2.29%1,653,772$4.10MInstitution
Knollwood Investment Advisory LLC2.26%1,628,510$4.04MInstitution
Alyeska Investment Group LP1.30%939,603$2.33MInstitution
Adar1 Capital Management LLC1.23%891,183$2.21MInstitution

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ABOS vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
ABOS49.38%15.42%Net BuyingNet Buying
KRRO19.15%80.85%Net BuyingNet Buying
OKUR27.34%72.66%Net SellingNet Selling
TNXP19.57%80.43%Net BuyingNet Buying
CNTN14.25%9.84%Net Buying

Acumen Pharmaceuticals Stock Ownership FAQ

Who owns Acumen Pharmaceuticals?

Acumen Pharmaceuticals (NASDAQ: ABOS) is owned by 49.38% institutional shareholders, 15.42% Acumen Pharmaceuticals insiders, and 35.20% retail investors. Robert D. Hardie is the largest individual Acumen Pharmaceuticals shareholder, owning 3.86M shares representing 5.34% of the company. Robert D. Hardie's Acumen Pharmaceuticals shares are currently valued at $9.73M.

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