Insider Transactions Reported by 19 Insiders of Acumen Pharmaceuticals, Inc.

Symbol
ABOS on Nasdaq
Location
Newton, MA

Insiders trading volume in the past year

Acumen Pharmaceuticals, Inc. executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
RA CAPITAL MANAGEMENT, L.P. Director, 10%+ Owner $49,860,878 16 Mar 2026
Sands Capital Ventures Discovery Fund III, L.P. 10%+ Owner $11,859,300 06 Jul 2021
Paul B. Manning 10%+ Owner $2,283,603 06 Jul 2021
Robert D. Hardie 10%+ Owner $2,283,603 06 Jul 2021
Daniel Joseph OConnell Chief Executive Officer, Director $1,660,145 -$163,123 -8.9% 21 Jan 2026
Derek M. Meisner Chief Legal Officer & Corp Sec $567,236 -$248,888 -30% 06 Mar 2026
Matt Zuga CFO & Chief Business Officer $567,158 -$49,556 -8% 21 Jan 2026
James J. Doherty President and CDO $466,054 -$15,148 -3.1% 16 Jan 2026
Eric Siemers Chief Medical Officer $464,775 -$27,110 -5.5% 21 Jan 2026
Russell Barton Chief Operating Officer $377,369 -$29,917 -7.3% 21 Jan 2026
John A. Stalfort III Director $203,636 04 Jun 2025
Amy Schacterle Chief Regulatory Officer $194,740 -$2,176 -1.1% 16 Jan 2026
Nathan B. Fountain Director $20,955 04 Jun 2025
Laura Stoppel Director $14,080 04 Jun 2025
Kimberlee C. Drapkin Director $14,080 04 Jun 2025
Derrell Porter Director $14,080 04 Jun 2025
Jeffrey L. Ives Director $14,080 04 Jun 2025
George Golumbeski Director 06 Nov 2025
Jeffrey Sevigny Director 15 Jun 2022

Recent Insider Transactions by Companies or Individuals for Acumen Pharmaceuticals, Inc.

Showing up to 300 most recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
Ra Capital Management, L.P. ABOS Common Stock Award 46.5% 6,060,606 19,103,785 16 Mar 2026 See footnotes
Derek M. Meisner ABOS Common Stock Sale -1.19% $6,813 $3.26 -2,090 173,999 06 Mar 2026 Direct
Derek M. Meisner ABOS Common Stock Options Exercise 1.2% 2,090 176,089 06 Mar 2026 Direct
Derek M. Meisner ABOS Employee Stock Option (right to buy) Options Exercise -2.86% -2,090 71,048 06 Mar 2026 Direct
Derek M. Meisner ABOS Common Stock Sale -5.13% $28,311 $3.01 -9,406 173,999 27 Feb 2026 Direct
Derek M. Meisner ABOS Common Stock Options Exercise 5.41% 9,406 183,405 27 Feb 2026 Direct
Derek M. Meisner ABOS Employee Stock Option (right to buy) Options Exercise -11.4% -9,406 73,138 27 Feb 2026 Direct
Derek M. Meisner ABOS Common Stock Sale -1.51% $8,017 $3.00 -2,671 173,999 28 Jan 2026 Direct
Derek M. Meisner ABOS Common Stock Options Exercise 1.54% 2,671 176,670 28 Jan 2026 Direct
Derek M. Meisner ABOS Employee Stock Option (right to buy) Options Exercise -3.13% -2,671 82,544 28 Jan 2026 Direct
Derek M. Meisner ABOS Common Stock Sale -7.98% $45,263 $3.00 -15,085 173,999 26 Jan 2026 Direct
Derek M. Meisner ABOS Common Stock Options Exercise 8.67% 15,085 189,084 26 Jan 2026 Direct
Derek M. Meisner ABOS Employee Stock Option (right to buy) Options Exercise -15% -15,085 85,215 26 Jan 2026 Direct
Derek M. Meisner ABOS Common Stock Sale -3.14% $10,718 $1.90 -5,633 173,999 23 Jan 2026 Direct
Derek M. Meisner ABOS Common Stock Sale -0.58% $1,939 $1.84 -1,054 179,632 22 Jan 2026 Direct
Eric Siemers ABOS Common Stock Sale -0.35% $1,629 $1.82 -895 255,371 22 Jan 2026 Direct
Matt Zuga ABOS Common Stock Sale -0.55% $3,138 $1.86 -1,687 304,924 22 Jan 2026 Direct
Daniel Joseph OConnell ABOS Common Stock Sale -0.3% $5,066 $1.88 -2,689 881,275 22 Jan 2026 Direct
Russell Barton ABOS Common Stock Sale -0.22% $850 $1.84 -462 205,092 22 Jan 2026 Direct
Derek M. Meisner ABOS Common Stock Sale -1.23% $4,063 $1.81 -2,247 180,686 21 Jan 2026 Direct
Eric Siemers ABOS Common Stock Sale -0.9% $4,204 $1.80 -2,331 256,266 21 Jan 2026 Direct
Matt Zuga ABOS Common Stock Sale -0.8% $4,469 $1.81 -2,473 306,611 21 Jan 2026 Direct
Daniel Joseph OConnell ABOS Common Stock Sale -1.05% $16,927 $1.81 -9,346 883,964 21 Jan 2026 Direct
Russell Barton ABOS Common Stock Sale -1.11% $4,181 $1.81 -2,315 205,554 21 Jan 2026 Direct
Daniel Joseph OConnell ABOS Common Stock Award 50.5% 299,800 893,310 20 Jan 2026 Direct
Daniel Joseph OConnell ABOS Employee Stock Option (right to buy) Award 450,000 450,000 20 Jan 2026 Direct
Matt Zuga ABOS Common Stock Award 47.2% 99,133 309,084 16 Jan 2026 Direct
Matt Zuga ABOS Employee Stock Option (right to buy) Award 148,700 148,700 16 Jan 2026 Direct
Derek M. Meisner ABOS Common Stock Award 118.3% 99,133 182,933 16 Jan 2026 Direct
Derek M. Meisner ABOS Employee Stock Option (right to buy) Award 148,700 148,700 16 Jan 2026 Direct
Eric Siemers ABOS Common Stock Award 62.2% 99,133 258,597 16 Jan 2026 Direct
Eric Siemers ABOS Employee Stock Option (right to buy) Award 148,700 148,700 16 Jan 2026 Direct
Russell Barton ABOS Common Stock Award 68.6% 84,600 207,869 16 Jan 2026 Direct
Russell Barton ABOS Employee Stock Option (right to buy) Award 126,900 126,900 16 Jan 2026 Direct
Amy Schacterle ABOS Common Stock Award 1098.3% 84,600 92,303 16 Jan 2026 Direct
Amy Schacterle ABOS Employee Stock Option (right to buy) Award 126,900 126,900 16 Jan 2026 Direct
James J. Doherty ABOS Common Stock Award 308.8% 166,867 220,900 16 Jan 2026 Direct
James J. Doherty ABOS Employee Stock Option (right to buy) Award 250,300 250,300 16 Jan 2026 Direct
Derek M. Meisner ABOS Common Stock Sale -9.26% $14,658 $1.71 -8,548 83,800 12 Jan 2026 Direct
Daniel Joseph OConnell ABOS Common Stock Sale -0.9% $9,307 $1.73 -5,388 593,510 12 Jan 2026 Direct
Derek M. Meisner ABOS Common Stock Sale -5.33% $9,169 $1.76 -5,200 92,348 09 Jan 2026 Direct
Daniel Joseph OConnell ABOS Common Stock Sale -2.12% $22,832 $1.76 -12,941 598,898 09 Jan 2026 Direct
Matt Zuga ABOS Common Stock Sale -3.18% $12,513 $1.82 -6,888 209,951 08 Jan 2026 Direct
Russell Barton ABOS Common Stock Sale -2.78% $6,562 $1.86 -3,530 123,269 08 Jan 2026 Direct
Derek M. Meisner ABOS Common Stock Sale -27.4% $67,246 $1.82 -36,911 97,548 08 Jan 2026 Direct
Daniel Joseph OConnell ABOS Common Stock Sale -1.31% $14,815 $1.82 -8,143 611,839 08 Jan 2026 Direct
James J. Doherty ABOS Common Stock Sale -10.7% $11,769 $1.82 -6,467 54,033 08 Jan 2026 Direct
James J. Doherty ABOS Common Stock Sale -2.73% $3,379 $1.99 -1,700 60,500 07 Jan 2026 Direct
Amy Schacterle ABOS Common Stock Sale -12.5% $2,176 $1.98 -1,097 7,703 07 Jan 2026 Direct
Matt Zuga ABOS Common Stock Sale -2.61% $11,566 $1.99 -5,805 216,839 07 Jan 2026 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.