Summary
Updated Aug 30, 2026
Russell Barton is Chief Operating Officer of Acumen Pharmaceuticals, Inc. (ABOS). 2 SEC Form 4 filings on record, most recently on 23 January 2026. Most recent open-market trade: sold $850 of ABOS on 23 January 2026. Lifetime open-market sales: $5K.
Recent Transactions
3Every recent SEC Form 4 transaction Russell Barton has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Russell Barton files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Derek M. Meisner - $105K of ABOS open-market activity in the last 12 months
- Derrell Porter - $75K of ABOS open-market activity in the last 12 months
- Daniel Joseph Oconnell - $22K of ABOS open-market activity in the last 12 months
- Nathan B. Fountain - $14K of ABOS open-market activity in the last 12 months
- Matt Zuga - $8K of ABOS open-market activity in the last 12 months
- Eric Siemers - $6K of ABOS open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Russell Barton?
Russell Barton is a corporate insider, tracked as Chief Operating Officer of Acumen Pharmaceuticals, Inc. (ABOS). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Russell Barton last file a Form 4?
The most recent primary Form 4 on record is dated 23 January 2026, one of 2 filings going back to 2026.
Has Russell Barton been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($5K) across all tracked filings.
Where can I see all of Russell Barton's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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