Dudediligence.

Acumen Pharmaceuticals, Inc

ABOSNASDAQ · Biological Products, (No Diagnostic Substances)
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Last 12 months

Sales planned on beside the trades reported on , and whether each names a .

Planned ·

$625,120

44 notices · 305,128 sh

Oct 2025 to Oct 2026

Reported ·

$625,712

48 sales · 0 buys

Oct 2025 to Sep 2026

The two figures cover different periods.

4 of 48 reported sales carry the 10b5-1 box. Together they are 0.42% of the shares on issue.

PLANNED · FORM 144Oct 2025 to Oct 2026REPORTED · FORM 4Oct 2025 to Sep 2026N2025DJ2026FMAMJJASO2026-06-17: DERRELL PORTER, Form 1442026-06-16: DERRELL PORTER, Form 1442026-06-15: DERRELL PORTER, Form 1442026-06-09: NATHAN FOUNTAIN, Form 1442026-03-06: Meisner Derek M, Form 1442026-02-27: Meisner Derek M, Form 1442026-01-28: Meisner Derek M, Form 1442026-01-27: Meisner Derek M, Form 1442026-01-23: Meisner Derek M, Form 1442026-01-22: Meisner Derek M, Form 1442026-01-22: Siemers Eric, Form 1442026-01-22: Barton Russell, Form 1442026-01-22: Zuga Matt, Form 1442026-01-22: OConnell Daniel Joseph, Form 1442026-01-21: Meisner Derek M, Form 1442026-01-21: Siemers Eric, Form 1442026-01-21: Barton Russell, Form 1442026-01-21: Zuga Matt, Form 1442026-01-21: OConnell Daniel Joseph, Form 1442026-01-12: Meisner Derek M, Form 1442026-01-12: OConnell Daniel Joseph, Form 1442026-01-09: Meisner Derek M, Form 1442026-01-09: OConnell Daniel Joseph, Form 1442026-01-08: Doherty James J., Form 1442026-01-08: Meisner Derek M, Form 1442026-01-08: Barton Russell, Form 1442026-01-08: Zuga Matt, Form 1442026-01-08: OConnell Daniel Joseph, Form 1442026-01-07: Schacterle Amy, Form 1442026-01-07: Doherty James J., Form 1442026-01-07: Meisner Derek M, Form 1442026-01-07: Barton Russell, Form 1442026-01-07: Zuga Matt, Form 1442026-01-07: OConnell Daniel Joseph, Form 1442026-01-06: Meisner Derek M, Form 1442026-01-05: Siemers Eric, Form 1442026-01-06: Barton Russell, Form 1442026-01-06: Zuga Matt, Form 1442026-01-06: OConnell Daniel Joseph, Form 1442026-01-05: Meisner Derek M, Form 1442026-01-05: Siemers Eric, Form 1442026-01-05: Barton Russell, Form 1442026-01-05: Zuga Matt, Form 1442026-01-05: OConnell Daniel Joseph, Form 1442026-01-05: Barton Russell, sold2026-01-05: Meisner Derek M, sold2026-01-05: OConnell Daniel Joseph, sold2026-01-05: Siemers Eric, sold2026-01-05: Zuga Matt, sold2026-01-07: Schacterle Amy, sold2026-01-07: Doherty James J., sold2026-01-08: OConnell Daniel Joseph, sold2026-01-08: Meisner Derek M, sold2026-01-08: Barton Russell, sold2026-01-08: Zuga Matt, sold2026-01-21: Barton Russell, sold2026-01-21: OConnell Daniel Joseph, sold2026-01-21: Zuga Matt, sold2026-01-21: Siemers Eric, sold2026-01-21: Meisner Derek M, sold2026-01-26: Meisner Derek M, sold2026-02-27: Meisner Derek M, sold2026-03-06: Meisner Derek M, sold2026-06-09: Fountain Nathan B, sold2026-06-15: Porter Derrell, sold
under a no plan named▼ salesize is dollars

Form 144 notices, newest first

2026-06-17DERRELL PORTER, Director$30,323
13,040 shno plan dateno Form 4 on file144 ↗
2026-06-16DERRELL PORTER, Director$29,768
12,800 shno plan dateno Form 4 on file144 ↗
2026-06-15DERRELL PORTER, Director$15,149
6,460 shno plan date144 ↗
Form 4, 2026-06-17: sold 32,300 at $2.33 Form 4 ↗
2026-06-09NATHAN FOUNTAIN, Director$14,273
6,400 shno plan date144 ↗
Form 4, 2026-06-10: sold 6,400 at $2.23 Form 4 ↗
2026-03-06Meisner Derek M, Chief Legal Officer & Corp Sec$6,730
2,090 shplan 2025-03-29144 ↗
Form 4, 2026-03-10: sold 2,090 at $3.26 Form 4 ↗
2026-02-27Meisner Derek M, Chief Legal Officer & Corp Sec$28,311
9,406 shplan 2025-03-29144 ↗
Form 4, 2026-03-03: sold 9,406 at $3.01 Form 4 ↗
2026-01-28Meisner Derek M, Chief Legal Officer & Corp Sec$8,017
2,671 shplan 2025-03-29no Form 4 on file144 ↗
2026-01-27Meisner Derek M, Chief Legal Officer & Corp Sec$45,262
15,085 shplan 2025-03-29144 ↗
Form 4, 2026-01-28: sold 17,756 at $3.00 Form 4 ↗
2026-01-23Meisner Derek M, Chief Legal Officer & Corp Sec$10,493
5,633 shplan 2025-03-29no Form 4 on file144 ↗
2026-01-22Meisner Derek M, Chief Legal Officer & Corp Sec$1,939
1,054 shplan 2024-05-15no Form 4 on file144 ↗
2026-01-22Siemers Eric, Chief Medical Officer$1,629
895 shplan 2024-09-03no Form 4 on file144 ↗
2026-01-22Barton Russell, Chief Operating Officer$850
462 shplan 2024-08-30no Form 4 on file144 ↗
2026-01-22Zuga Matt, CFO & Chief Business Officer$3,138
1,687 shplan 2024-08-30no Form 4 on file144 ↗
2026-01-22OConnell Daniel Joseph, Chief Executive Officer$5,066
2,689 shplan 2024-06-24no Form 4 on file144 ↗
2026-01-21Meisner Derek M, Chief Legal Officer & Corp Sec$4,063
2,247 shplan 2024-05-15144 ↗
Form 4, 2026-01-23: sold 8,934 at $1.87 Form 4 ↗
2026-01-21Siemers Eric, Chief Medical Officer$4,204
2,331 shplan 2024-09-03144 ↗
Form 4, 2026-01-23: sold 3,226 at $1.81 Form 4 ↗
2026-01-21Barton Russell, Chief Operating Officer$4,181
2,315 shplan 2024-08-30144 ↗
Form 4, 2026-01-23: sold 2,777 at $1.81 Form 4 ↗
2026-01-21Zuga Matt, CFO & Chief Business Officer$4,469
2,473 shplan 2024-08-30144 ↗
Form 4, 2026-01-23: sold 4,160 at $1.83 Form 4 ↗
2026-01-21OConnell Daniel Joseph, Chief Executive Officer$16,927
9,346 shplan 2024-06-24144 ↗
Form 4, 2026-01-23: sold 12,035 at $1.83 Form 4 ↗
2026-01-12Meisner Derek M, Chief Legal Officer & Corp Sec$14,658
8,548 shplan 2025-03-29no Form 4 on file144 ↗
2026-01-12OConnell Daniel Joseph, Chief Executive Officer$9,307
5,388 shplan 2025-06-27no Form 4 on file144 ↗
2026-01-09Meisner Derek M, Chief Legal Officer & Corp Sec$9,169
5,200 shplan 2025-03-29no Form 4 on file144 ↗
2026-01-09OConnell Daniel Joseph, Chief Executive Officer$22,832
12,941 shplan 2025-06-27no Form 4 on file144 ↗
2026-01-08Doherty James J., President and CDO$11,769
6,467 shplan 2025-09-30no Form 4 on file144 ↗
2026-01-08Meisner Derek M, Chief Legal Officer & Corp Sec$67,244
36,911 shplan 2025-03-29144 ↗
Form 4, 2026-01-12: sold 50,659 at $1.80 Form 4 ↗
2026-01-08Barton Russell, Chief Operating Officer$6,562
3,530 shplan 2025-06-25144 ↗
Form 4, 2026-01-12: sold 3,530 at $1.86 Form 4 ↗
2026-01-08Zuga Matt, CFO & Chief Business Officer$12,513
6,888 shplan 2025-06-30144 ↗
Form 4, 2026-01-12: sold 6,888 at $1.82 Form 4 ↗
2026-01-08OConnell Daniel Joseph, Chief Executive Officer$14,815
8,143 shplan 2025-06-27144 ↗
Form 4, 2026-01-12: sold 26,472 at $1.77 Form 4 ↗
2026-01-07Schacterle Amy, Chief Regulatory Officer$2,176
1,097 shplan 2025-09-30144 ↗
Form 4, 2026-01-09: sold 1,097 at $1.98 Form 4 ↗
2026-01-07Doherty James J., President and CDO$3,380
1,700 shplan 2025-09-30144 ↗
Form 4, 2026-01-09: sold 8,167 at $1.86 Form 4 ↗
2026-01-07Meisner Derek M, Chief Legal Officer & Corp Sec$23,415
11,770 shplan 2025-03-29no Form 4 on file144 ↗
2026-01-07Barton Russell, Chief Operating Officer$3,378
1,700 shplan 2025-06-25no Form 4 on file144 ↗
2026-01-07Zuga Matt, CFO & Chief Business Officer$11,566
5,805 shplan 2024-08-30no Form 4 on file144 ↗
2026-01-07OConnell Daniel Joseph, Chief Executive Officer$74,981
37,755 shplan 2024-06-24no Form 4 on file144 ↗
2026-01-06Meisner Derek M, Chief Legal Officer & Corp Sec$21,438
10,898 shplan 2024-05-15no Form 4 on file144 ↗
2026-01-06Barton Russell, Chief Operating Officer$7,114
3,618 shplan 2024-08-30no Form 4 on file144 ↗
2026-01-06Zuga Matt, CFO & Chief Business Officer$10,028
5,100 shplan 2024-08-30no Form 4 on file144 ↗
2026-01-06OConnell Daniel Joseph, Chief Executive Officer$10,031
5,102 shplan 2024-06-24no Form 4 on file144 ↗
2026-01-05Siemers Eric, Chief Medical Officer$13,443
6,834 shplan 2024-09-03144 ↗
Form 4, 2026-01-07: sold 10,834 at $1.97 Form 4 ↗
2026-01-05Meisner Derek M, Chief Legal Officer & Corp Sec$7,838
4,000 shplan 2024-05-15144 ↗
Form 4, 2026-01-07: sold 26,668 at $1.98 Form 4 ↗
2026-01-05Siemers Eric, Chief Medical Officer$7,835
4,000 shplan 2024-09-03no Form 4 on file144 ↗
2026-01-05Barton Russell, Chief Operating Officer$7,833
4,000 shplan 2024-08-30144 ↗
Form 4, 2026-01-07: sold 9,318 at $1.97 Form 4 ↗
2026-01-05Zuga Matt, CFO & Chief Business Officer$7,842
4,000 shplan 2024-08-30144 ↗
Form 4, 2026-01-07: sold 14,905 at $1.98 Form 4 ↗
2026-01-05OConnell Daniel Joseph, Chief Executive Officer$9,163
4,649 shplan 2024-06-24144 ↗
Form 4, 2026-01-07: sold 47,506 at $1.99 Form 4 ↗