Summary
Updated Aug 31, 2026
Mark Spoto files SEC Form 4 reports at 908 Devices Inc. (MASS). 3 SEC Form 4 filings on record, most recently on 12 June 2026.
Recent Transactions
9Every recent SEC Form 4 transaction Mark Spoto has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Mark Spoto go back to 2026: 3 primary Form 4 filings, an average of 3.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Mark Spoto 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.
- AWM Investment Company, Inc. - $3.68M of MASS open-market activity in the last 12 months
- Kevin J. Knopp - $2.55M of MASS open-market activity in the last 12 months
- Christopher D. Brown - $1.49M of MASS open-market activity in the last 12 months
- Joseph H. Griffith IV - $412K of MASS open-market activity in the last 12 months
- John Kenneweg - $201K of MASS open-market activity in the last 12 months
- Kevin J. McCallion - $188K of MASS 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 Mark Spoto?
Mark Spoto is a corporate insider of 908 Devices Inc. (MASS). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Mark Spoto submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Where can I see all of Mark Spoto'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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