Acumen Pharmaceuticals, Inc. ABOS NASDAQ

NASDAQ Global Select • Healthcare • Biotechnology • US • USD

SharesGrow Score

52/100

2/6 Pass

SharesGrow Intrinsic Value

There have been 50 recent insider transactions recorded for Acumen Pharmaceuticals, Inc. (ABOS), including 9 buys and 40 sells. Total insider buying was valued at $22.01M and total insider selling at $463.72K.

Notable insiders with recent activity include Ra Capital Management, L.p., Meisner Derek M, Zuga Matt. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.

Insider Transactions — ABOS

Date	Name	Role	Transaction	Shares	Avg. Price	Value	Shares Owned
2026-03-16	Ra Capital Management, L.p.	10 Percent Owner	RSU Award	6,060,606	$3.30	$20M	19,103,785
2026-03-06	Meisner Derek M	Chief Legal Officer & Corp Sec	Option Exercise (Sell)	2,090	$1.85	$3.87K	71,048
2026-02-27	Meisner Derek M	Chief Legal Officer & Corp Sec	Option Exercise (Sell)	9,406	$1.85	$17.4K	73,138
2026-01-28	Meisner Derek M	Chief Legal Officer & Corp Sec	Option Exercise (Sell)	2,671	$1.85	$4.94K	82,544
2026-01-26	Meisner Derek M	Chief Legal Officer & Corp Sec	Option Exercise (Sell)	15,085	$1.85	$27.91K	85,215
2026-01-23	Meisner Derek M	Chief Legal Officer & Corp Sec	Informative Sell	5,633	$1.90	$10.72K	173,999
2026-01-22	Meisner Derek M	Chief Legal Officer & Corp Sec	Informative Sell	1,054	$1.84	$1.94K	179,632
2026-01-22	Zuga Matt	CFO & Chief Business Officer	Informative Sell	1,687	$1.86	$3.14K	304,924
2026-01-22	Oconnell Daniel Joseph	Chief Executive Officer	Informative Sell	2,689	$1.88	$5.07K	881,275
2026-01-22	Siemers Eric	Chief Medical Officer	Informative Sell	895	$1.82	$1.63K	255,371
2026-01-22	Barton Russell	Chief Operating Officer	Informative Sell	462	$1.84	$850.08	205,092
2026-01-21	Meisner Derek M	Chief Legal Officer & Corp Sec	Informative Sell	2,247	$1.81	$4.06K	180,686
2026-01-21	Zuga Matt	CFO & Chief Business Officer	Informative Sell	2,473	$1.81	$4.47K	306,611
2026-01-21	Oconnell Daniel Joseph	Chief Executive Officer	Informative Sell	9,346	$1.81	$16.93K	883,964
2026-01-21	Siemers Eric	Chief Medical Officer	Informative Sell	2,331	$1.80	$4.2K	256,266
2026-01-21	Barton Russell	Chief Operating Officer	Informative Sell	2,315	$1.81	$4.18K	205,554
2026-01-20	Oconnell Daniel Joseph	Chief Executive Officer	RSU Award	450,000	$1.86	$837K	450,000
2026-01-16	Meisner Derek M	Chief Legal Officer & Corp Sec	RSU Award	148,700	$1.89	$281.04K	148,700
2026-01-16	Zuga Matt	CFO & Chief Business Officer	RSU Award	148,700	$1.89	$281.04K	148,700
2026-01-16	Siemers Eric	Chief Medical Officer	RSU Award	148,700	$1.89	$281.04K	148,700
2026-01-16	Barton Russell	Chief Operating Officer	RSU Award	126,900	$1.89	$239.84K	126,900
2026-01-16	Doherty James J.	President and Cdo	RSU Award	166,867	-	-	220,900
2026-01-16	Schacterle Amy	Chief Regulatory Officer	RSU Award	84,600	-	-	92,303
2026-01-12	Meisner Derek M	Chief Legal Officer & Corp Sec	Informative Sell	8,548	$1.71	$14.66K	83,800
2026-01-12	Oconnell Daniel Joseph	Chief Executive Officer	Informative Sell	5,388	$1.73	$9.31K	593,510
2026-01-09	Meisner Derek M	Chief Legal Officer & Corp Sec	Informative Sell	5,200	$1.76	$9.17K	92,348
2026-01-09	Oconnell Daniel Joseph	Chief Executive Officer	Informative Sell	12,941	$1.76	$22.83K	598,898
2026-01-08	Doherty James J.	President and Cdo	Informative Sell	6,467	$1.82	$11.77K	54,033
2026-01-08	Meisner Derek M	Chief Legal Officer & Corp Sec	Informative Sell	30,092	$1.82	$54.87K	97,548
2026-01-08	Zuga Matt	CFO & Chief Business Officer	Informative Sell	6,888	$1.82	$12.51K	209,951
2026-01-08	Oconnell Daniel Joseph	Chief Executive Officer	Informative Sell	8,143	$1.82	$14.82K	611,839
2026-01-08	Barton Russell	Chief Operating Officer	Informative Sell	3,530	$1.86	$6.56K	123,269
2026-01-07	Meisner Derek M	Chief Legal Officer & Corp Sec	Informative Sell	10,070	$1.99	$20.04K	134,459
2026-01-07	Zuga Matt	CFO & Chief Business Officer	Informative Sell	1,700	$1.99	$3.38K	216,839
2026-01-07	Oconnell Daniel Joseph	Chief Executive Officer	Informative Sell	37,755	$1.99	$74.98K	619,982
2026-01-07	Barton Russell	Chief Operating Officer	Informative Sell	1,700	$1.99	$3.38K	126,799
2026-01-07	Doherty James J.	President and Cdo	Informative Sell	1,700	$1.99	$3.38K	60,500
2026-01-07	Schacterle Amy	Chief Regulatory Officer	Informative Sell	1,097	$1.98	$2.18K	7,703
2026-01-06	Meisner Derek M	Chief Legal Officer & Corp Sec	Informative Sell	3,801	$1.97	$7.48K	146,229
2026-01-06	Zuga Matt	CFO & Chief Business Officer	Informative Sell	5,100	$1.97	$10.03K	222,644
2026-01-06	Oconnell Daniel Joseph	Chief Executive Officer	Informative Sell	5,102	$1.97	$10.03K	657,737
2026-01-06	Siemers Eric	Chief Medical Officer	Informative Sell	6,834	$1.97	$13.44K	159,464
2026-01-06	Barton Russell	Chief Operating Officer	Informative Sell	3,618	$1.97	$7.11K	128,499
2026-01-05	Meisner Derek M	Chief Legal Officer & Corp Sec	Informative Sell	4,000	$1.96	$7.84K	157,127
2026-01-05	Zuga Matt	CFO & Chief Business Officer	Informative Sell	4,000	$1.96	$7.84K	227,744
2026-01-05	Oconnell Daniel Joseph	Chief Executive Officer	Informative Sell	4,649	$1.97	$9.16K	662,839
2026-01-05	Siemers Eric	Chief Medical Officer	Informative Sell	4,000	$1.96	$7.83K	166,298
2026-01-05	Barton Russell	Chief Operating Officer	Informative Sell	4,000	$1.96	$7.83K	132,117
2025-11-06	Golumbeski George	Director	Unknown	-	-	-	-
2025-11-06	Golumbeski George	Director	RSU Award	50,000	$1.90	$95K	50,000

■ Informative Buy/Sell — open market transaction (most significant) ■ Uninformative Buy — award, option exercise, conversion ■ Uninformative Sell — tax withholding, award vest sale ■ Neutral — gift, trust, expiry