SEC Insider Transactions from Barton Russell.

Last updated: 2026-03-14 11:45 UTC | Total transactions: 17

Barton Russell, Chief Operating Officer of Acumen Pharmaceuticals ($ABOS), made six open market sales of company stock over the past year, totaling nearly $30,000. His most recent sale occurred on January 22, 2026. These transactions rank 10,828th among 11,678 individual insiders in our database, where the average sale value hits $8.6 million across about six deals per insider. Russell recorded no open market purchases during this period.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
Jan. 22, 2026 Acumen Pharmaceuticals, Inc. $ABOS Barton Russell Chief Operating Officer S Common Stock 462 $1.84 205,092.0000 60,573,425 0.22% 0.00%
Jan. 21, 2026 Acumen Pharmaceuticals, Inc. $ABOS Barton Russell Chief Operating Officer S Common Stock 2315 $1.81 205,554.0000 60,573,425 1.11% 0.00%
Jan. 16, 2026 Acumen Pharmaceuticals, Inc. $ABOS Barton Russell Chief Operating Officer A Employee Stock Option (right to buy) 126900 $0.00 126,900.0000 60,573,425 9999.99% 0.21%
Jan. 16, 2026 Acumen Pharmaceuticals, Inc. $ABOS Barton Russell Chief Operating Officer A Common Stock 84600 $0.00 207,869.0000 60,573,425 68.63% 0.14%
Jan. 8, 2026 Acumen Pharmaceuticals, Inc. $ABOS Barton Russell Chief Operating Officer S Common Stock 3530 $1.86 123,269.0000 60,573,425 2.78% 0.01%
Jan. 6, 2026 Acumen Pharmaceuticals, Inc. $ABOS Barton Russell Chief Operating Officer S Common Stock 3618 $1.97 128,499.0000 60,573,425 2.74% 0.01%
Jan. 7, 2026 Acumen Pharmaceuticals, Inc. $ABOS Barton Russell Chief Operating Officer S Common Stock 1700 $1.99 126,799.0000 60,573,425 1.32% 0.00%
Jan. 5, 2026 Acumen Pharmaceuticals, Inc. $ABOS Barton Russell Chief Operating Officer S Common Stock 4000 $1.96 132,117.0000 60,573,425 2.94% 0.01%
Jan. 21, 2025 Acumen Pharmaceuticals, Inc. $ABOS Barton Russell Chief Operating Officer S Common Stock 2914 $1.61 136,117.0000 0 2.10% 0.00%
Jan. 6, 2025 Acumen Pharmaceuticals, Inc. $ABOS Barton Russell Chief Operating Officer A Employee Stock Option (right to buy) 74700 $0.00 74,700.0000 0 9999.99% 0.00%
Jan. 3, 2025 Acumen Pharmaceuticals, Inc. $ABOS Barton Russell Chief Operating Officer S Common Stock 7636 $1.86 89,231.0000 0 7.88% 0.00%
Jan. 6, 2025 Acumen Pharmaceuticals, Inc. $ABOS Barton Russell Chief Operating Officer A Common Stock 49800 $0.00 139,031.0000 0 55.81% 0.00%
Jan. 18, 2024 Acumen Pharmaceuticals, Inc. $ABOS Barton Russell Chief Operating Officer S Common Stock 2833 $3.73 96,867.0000 0 2.84% 0.00%
Jan. 2, 2024 Acumen Pharmaceuticals, Inc. $ABOS Barton Russell Chief Operating Officer A Common Stock 73000 $0.00 99,700.0000 0 273.41% 0.00%
Jan. 2, 2024 Acumen Pharmaceuticals, Inc. $ABOS Barton Russell Chief Operating Officer A Employee Stock Option (right to buy) 110000 $0.00 110,000.0000 0 9999.99% 0.00%
Jan. 17, 2023 Acumen Pharmaceuticals, Inc. $ABOS Barton Russell Chief Operating Officer A Employee Stock Option (right to buy) 120200 $0.00 120,200.0000 0 9999.99% 0.00%
Jan. 17, 2023 Acumen Pharmaceuticals, Inc. $ABOS Barton Russell Chief Operating Officer A Common Stock 26700 $0.00 26,700.0000 0 9999.99% 0.00%