Career & Filing History
Every role Mark L. Jacobson has reported on a Form 4, reconstructed from the filings themselves. Reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
Mark L. Jacobson is a corporate insider at Axsome Therapeutics, Inc. (AXSM). Jacobson has reported 6 insider filings with the SEC since 2025. The most recent filing was in May 2026.
Every role Mark L. Jacobson has reported on a Form 4, reconstructed from the filings themselves. Reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
Axsome Therapeutics, Inc. (AXSM)5 filingsUpdated Aug 31, 2026
Mark L. Jacobson is Chief Operating Officer of Axsome Therapeutics, Inc. (AXSM). 5 SEC Form 4 filings on record going back to 2025, most recently on 6 May 2026. Most recent open-market trade: sold $53K of AXSM on 6 May 2026. Lifetime open-market sales: $13.21M.
Every recent SEC Form 4 transaction Mark L. Jacobson has reported, most recent first.
InsiderAlpha's records for Mark L. Jacobson go back to 2025: 5 primary Form 4 filings, an average of 2.5 per year. 9 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Insiders who reported open-market trades in the last 12 months at the companies Mark L. Jacobson 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.
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Mark L. Jacobson is a corporate insider, tracked as Chief Operating Officer of Axsome Therapeutics, Inc. (AXSM). InsiderAlpha holds 5 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
The most recent primary Form 4 on record is dated 6 May 2026, one of 5 filings going back to 2025.
Recorded transactions: 0 open-market purchases and 6 open-market sales ($13.21M) across all tracked 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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