TENNANT CO (TNC) has 190 open-market insider trades by 31 insiders since 2006. Over the last six months insiders net bought $244K. The most active filer is Chris Killingstad, Director.
| Name | Title | Tier | Trades | Value | Last Trade |
|---|---|---|---|---|---|
| Chris Killingstad | Dir | — | 31 | $22.9M | 2021-04-20 |
| Richard H. Zay | COOVP | — | 16 | $11.9M | 2026-08-10 |
| David W. Huml | CEOPres | — | 10 | $9.4M | 2026-03-06 |
| Thomas Paulson | CFOVP | — | 12 | $7.6M | 2018-08-09 |
| Heidi M. Wilson | CLOVPSecretary | — | 17 | $6.1M | 2017-03-06 |
| Carol E. McKnight | VP | — | 2 | $4.6M | 2023-05-26 |
| Steven Alan Sonnenberg | Dir | — | 9 | $4.5M | 2024-02-27 |
| Andrew J. Eckert | SVPThe Americas | — | 14 | $3.9M | 2014-05-27 |
| Thomas Dybsky | SVPAdministration | — | 21 | $3.8M | 2014-04-24 |
| Don B. Westman | SVPOperations | — | 5 | $3.5M | 2015-02-27 |
| Insider | Title | Type | Value | Date |
|---|---|---|---|---|
| Patrick E. Allen | Director | Buy | $208K | 2026-08-31 |
| Donal L. Mulligan | Director | Buy | $539K | 2026-08-12 |
| Timothy R. Morse | Director | Buy | $102K | 2026-08-12 |
| Richard H. Zay | CCO | Sell | $605K | 2026-05-07 |
| James T. Glerum Jr. | Director | Buy | $500K | 2026-03-02 |
| Azita Arvani | Director | Sell | $194K | 2026-02-27 |
Companies that share insiders with TNC, and sector peers with recent insider buying. Related by who files, not by how the stocks move.
| Carol S. Eicher | Director | Sell | $194K | 2026-02-26 |
| David W. Huml | CEO & President | Buy | $258K | 2026-02-26 |
| David Windley | Director | Sell | $236K | 2026-02-26 |
| Donal L. Mulligan | Director | Buy | $504K | 2026-02-26 |
| Richard H. Zay | CCO | Sell | $673K | 2025-08-19 |
| Azita Arvani | Director | Sell | $402K | 2025-02-28 |
| Barb Balinski | VP | Sell | $297K | 2025-02-28 |
| Richard H. Zay | CCO | Sell | $1.2M | 2025-02-24 |
| Barb Balinski | VP | Sell | $145K | 2024-08-28 |