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Acumen Pharmaceuticals, Inc.

ABOS Net selling

CIK 0001576885 #3844 in the set updated 21 Sep 2026

Bought (12 mo)

$0.00

out of their own pocket, the only kind of buying there is

Sold (12 mo)

$625.43K

$0.00 on a plan · $133.87K straight out of an exercise

Sold at will

$491.56K

42 of 48 sales

Net

−$625.43K

−$491.56K against sales at will

By person

15 insiders · 48 transactions

Insider

Role

Bought

Sold

Net

Holding

Of company

Worth

Change

Meisner Derek M

Chief Legal Officer & Corp Sec

—

$248.89K (16)

−$248.89K

173,999

0.2406%

$404.55K

+59.8%

OConnell Daniel Joseph

Chief Executive Officer

—

$163.12K (8)

−$163.12K

881,275

1.22%

$2.05M

+75.4%

Porter Derrell

Director

—

$75.24K (3) scheduled

−$75.24K

35,500

0.0491%

$82.54K

—

Zuga Matt

CFO & Chief Business Officer

—

$49.56K (7)

−$49.56K

304,924

0.4216%

$708.95K

+44.2%

Barton Russell

Chief Operating Officer

—

$29.92K (6)

−$29.92K

205,092

0.2836%

$476.84K

+111.7%

Siemers Eric

Chief Medical Officer

—

$27.11K (4)

−$27.11K

255,371

0.3531%

$593.74K

+117.2%

Doherty James J.

President and CDO

—

$15.15K (2)

−$15.15K

220,900

0.3055%

$513.59K

—

Fountain Nathan B

Director

—

$14.27K (1)

−$14.27K

48,150

0.0666%

$111.95K

+670.4%

Schacterle Amy

Chief Regulatory Officer

—

$2.18K (1)

−$2.18K

92,303

0.1276%

$214.60K

—

Stalfort John A III

Director

—

220,624

0.3051%

$512.95K

+28.0%

RA CAPITAL MANAGEMENT, L.P. entity

Director

—

48,300

0.0668%

$112.30K

—

Drapkin Kimberlee C

Director

—

48,300

0.0668%

$112.30K

—

Stoppel Laura

Director

—

48,300

0.0668%

$112.30K

—

Ives Jeffrey L.

Director

—

48,300

0.0668%

$112.30K

—

Golumbeski George

Director

—

35,500

0.0491%

$82.54K

—

Individual transactions

Insider

Date

Role

Action

Price

Amount

Porter Derrell

17 Jun 2026

Director

Sold after exercise

13,040

$2.33

$30.32K

Porter Derrell

15 Jun 2026

Director

Sold after exercise

6,460

$2.35

$15.15K

Meisner Derek M

6 Mar 2026

Chief Legal Officer & Corp Sec

Sold after exercise

2,090

$3.26

$6.81K

Meisner Derek M

27 Feb 2026

Chief Legal Officer & Corp Sec

Sold after exercise

9,406

$3.01

$28.31K

Meisner Derek M

28 Jan 2026

Chief Legal Officer & Corp Sec

Sold after exercise

2,671

$3.00

$8.02K

Meisner Derek M

26 Jan 2026

Chief Legal Officer & Corp Sec

Sold after exercise

15,085

$3.00

$45.26K

Show all 48 transactions →

What was left out

Form 4 filings counted 38

Amendments (4/A) skipped 0

Filings about a different issuer 0

Unreadable filings 0

Joint filings 2

Sales on a Rule 10b5-1 plan 0

Sales straight out of an exercise 6

Sales at will 42

Transactions with no price 0

Shares from compensation/vesting 7,326,624

History held since 2 Jul 2021