Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies Mark W. Sheahan 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.
- Claudio Merengo - $1.25M in GGG purchases and sales in the last 12 months
- J. Kevin Gilligan - $1.15M in GGG purchases and sales in the last 12 months
- Donal L. Mulligan - $1.04M in TNC purchases and sales in the last 12 months
- Peter J. O'Shea - $777K in GGG purchases and sales in the last 12 months
- Richard H. Zay - $605K in TNC purchases and sales in the last 12 months
- James T. Glerum Jr. - $500K in TNC purchases and sales in the last 12 months
More insiders (A-Z)
Browse nearby insider profiles in alphabetical order.
Frequently asked questions
Who is Mark W. Sheahan?
Mark W. Sheahan is a corporate insider of TENNANT CO (TNC). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Mark W. Sheahan last file a Form 4?
The most recent primary Form 4 on record is dated 11 May 2026, one of 4 filings going back to 2025.
