Richard H. Zay is CCO at TENNANT CO (TNC). They have made 16 open-market trades across 1 company since 2013, most recently 2026-08-10.
CIK 0001494479
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 16 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| TNC | 30,225 | $2.0M |
Shares reported on the most recent Form 4, priced at the 2026-09-11 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| TNC | SELL | 2026-05-07 | 2026-05-11 | $88.02 | $605K | -3.3% | +0.4% | -18.7% |
| TNC | SELL | 2025-08-19 | 2025-08-21 | $83.21 | $673K | -1.0% | +0.1% | -14.7% |
| TNC | SELL | 2025-02-24 | 2025-02-25 | $87.58 | $1.2M | -1.2% | -5.8% | -14.4% |
| TNC | SELL | 2024-02-27 | 2024-02-29 | $110.19 | $3.2M | -0.8% | +9.2% | -11.1% |
| TNC | SELL | 2023-08-10 | 2023-08-14 | $85.79 | $954K | -2.1% | -8.1% | -0.5% |
| TNC | SELL | 2023-05-03 | 2023-05-05 | $79.46 | $591K | -0.8% | -4.3% | +3.4% |
| TNC | SELL | 2022-08-16 | 2022-08-18 | $70.72 | $322K | -12.9% | -11.2% | -8.7% |
| TNC | SELL | 2021-08-20 | 2021-08-24 | $71.95 | $265K | +5.2% | +1.6% | +15.6% |
| TNC | SELL | 2021-08-18 | 2021-08-19 | $72.94 | $117K | +4.4% | +0.2% | +16.6% |
| TNC | SELL | 2021-05-10 | 2021-05-11 | $84.91 | $642K | -0.3% | -1.4% | -11.8% |
| TNC | SELL | 2020-11-09 | 2020-11-10 | $64.00 | $943K | -3.7% | +1.4% | +7.9% |
| TNC | SELL | 2019-11-11 | 2019-11-13 | $77.46 | $1.1M | -2.8% | +1.3% | +6.3% |
| TNC | SELL | 2019-07-31 | 2019-08-02 | $72.49 | $290K | -4.9% | -6.3% | +10.0% |
| TNC | SELL · 10b5-1 | 2018-04-23 | 2018-04-24 | $73.00 | $48K | -2.0% | +5.2% | +4.7% |
| TNC | SELL | 2017-06-02 | 2017-06-05 | $73.00 | $93K | +1.8% | +2.1% | -16.4% |
| TNC | SELL | 2014-05-21 | 2014-05-22 | $63.00 | $113K | -4.9% | -2.7% | -2.7% |
| TNC | SELL | 2013-11-21 | 2013-11-22 | $61.50 | $638K | -4.9% | -2.7% | -2.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.