TNC
insider transactionsTENNANT CO — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Cluster buy signal: Multiple insiders at the same company buying around the same time — often a stronger signal than a single buy. 3 different insiders made open-market purchases in the last 365 days, totalling $1.3M.
Net shares · 365d
-734
20.2K buy · 20.9K sell
Net value · 365d
-$303.5K
$1.3M in · $1.6M out
Sentiment · 365d
Net selling
45% buying · 55% selling
Open-market trades · 365d
11
20.2K buy · 20.9K sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
Transactions · 365d
-
Sell·S
CHIEF COMMERCIAL OFFICER
$605.1K
6.9K sh · $88.02
Own -20%
-
Buy·P
Director
$500.0K
8.2K sh · $61.25
Own +1868%
-
Sell·S
Director
$193.8K
3.2K sh · $61.40
Own -15%
-
Buy·P
Director
$504.1K
8.0K sh · $63.02 avg · 2 lots
Own New
-
Buy·P
Huml David W. KEY
PRESIDENT AND CEO
$257.5K
4.0K sh · $64.39 avg · 3 lots
Own +6%
-
Sell·S
Director
$194.0K
3.1K sh · $61.98
Own -10%
-
Sell·S
Director
$235.9K
3.7K sh · $63.86
Own -33%
-
Sell·S
CHIEF COMMERCIAL OFFICER
$336.3K
4.0K sh · $83.21
Own -16%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| May 7, 2026 | Zay Richard H. | Sell S | 6.9K | $605.1K |
| Mar 2, 2026 | Glerum James T Jr. | Buy P | 8.2K | $500.0K |
| Feb 27, 2026 | Arvani Azita | Sell S | 3.2K | $193.8K |
| Feb 27, 2026 | Mulligan Donal L | Buy P | 8.0K2 lots | $504.1K |
| Feb 26, 2026 | Huml David W. KEY | Buy P | 4.0K3 lots | $257.5K |
| Feb 26, 2026 | EICHER CAROL S | Sell S | 3.1K | $194.0K |
| Feb 26, 2026 | Windley David | Sell S | 3.7K | $235.9K |
| Aug 19, 2025 | Zay Richard H. | Sell S | 4.0K | $336.3K |
Buy Sell Non-market (grant · exercise · gift)
About TNC insider trading
This page tracks insider transactions for TENNANT CO (TNC) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.