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
-
Grant·A
Director
$0
1.5K sh
Own +20%
-
Sell·S
CHIEF COMMERCIAL OFFICER
$605.1K
6.9K sh · $88.02
Own -20%
-
Grant·A
Director
$0
1.5K sh
Own +52%
-
Grant·A
Director
$0
1.5K sh
Own +7%
-
Grant·A
Director
$0
1.5K sh
Own +20%
-
Grant·A
Director
$0
1.5K sh
Own +27%
-
Grant·A
Director
$0
1.5K sh
Own +17%
-
Grant·A
Director
$0
1.5K sh
Own +13%
-
Grant·A
Director
$0
1.5K sh
Own +5%
-
Grant·A
Director
$0
1.5K sh
Own +9%
-
Grant·A
Director
$0
1.5K sh
Own +341%
-
Exercise·M
Director
$0
3.5K sh
Own New
-
Other·F
Director
$193.6K
2.5K sh · $78.81
Own -11%
-
Exercise·M
Director
$193.5K
3.5K sh · $54.70
Own +18%
-
Other·G
Huml David W. KEY
PRESIDENT AND CEO
$0
53.5K sh · 2 lots
Own -42%
-
Buy·P
Director
$500.0K
8.2K sh · $61.25
Own +1868%
-
Other·F
West Fay KEY
SENIOR VP, CFO
$57.7K
945 sh · $61.03
Own -2%
-
Other·F
SVP, Chief Mktg & Tech Officer
$11.8K
194 sh · $61.03
Own -2%
-
Other·F
Huml David W. KEY
PRESIDENT AND CEO
$260.5K
4.3K sh · $61.03
Own -4%
-
Other·F
SVP, Chief Transf Officer
$27.5K
451 sh · $61.03
Own -2%
-
Other·F
CHIEF COMMERCIAL OFFICER
$51.3K
840 sh · $61.03
Own -2%
-
Other·F
SVP, CHRO & GC
$31.4K
514 sh · $61.03
Own -2%
-
Exercise·M
Director
$0
3.5K sh
Own New
-
Exercise·M
Director
$193.5K
3.5K sh · $54.70
Own +21%
-
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
-
Grant·A
Director
$0
437 sh
Own New
-
Grant·A
SVP, Chief Mktg & Tech Officer
$0
6.1K sh · 2 lots
Own +115%
-
Other·F
SVP, Chief Mktg & Tech Officer
$34.6K
552 sh · $62.73
Own -7%
-
Grant·A
Director
$0
437 sh
Own New
-
Grant·A
SVP, Chief Transf Officer
$0
10.0K sh · 2 lots
Own +104%
-
Other·F
SVP, Chief Transf Officer
$113.5K
1.8K sh · $62.73
Own -11%
-
Other·F
SVP, CHRO & GC
$126.3K
2.0K sh · $62.73
Own -9%
-
Grant·A
SVP, CHRO & GC
$0
11.5K sh · 2 lots
Own +81%
-
Grant·A
West Fay KEY
SENIOR VP, CFO
$0
19.5K sh · 2 lots
Own +77%
-
Other·F
West Fay KEY
SENIOR VP, CFO
$228.7K
3.6K sh · $62.73
Own -8%
-
Buy·P
Huml David W. KEY
PRESIDENT AND CEO
$257.5K
4.0K sh · $64.39 avg · 3 lots
Own +6%
-
Grant·A
Huml David W. KEY
PRESIDENT AND CEO
$0
64.2K sh · 2 lots
Own +198%
-
Other·F
Huml David W. KEY
PRESIDENT AND CEO
$866.1K
13.8K sh · $62.73
Own -18%
-
Exercise·M
Director
$0
3.5K sh
Own New
-
Sell·S
Director
$194.0K
3.1K sh · $61.98
Own -10%
-
Exercise·M
Director
$193.5K
3.5K sh · $54.70
Own +12%
-
Grant·A
CHIEF COMMERCIAL OFFICER
$0
17.5K sh · 2 lots
Own +99%
-
Other·F
CHIEF COMMERCIAL OFFICER
$205.1K
3.3K sh · $62.73
Own -10%
-
Exercise·M
Director
$0
4.2K sh · 2 lots
Own New
-
Sell·S
Director
$235.9K
3.7K sh · $63.86
Own -33%
-
Exercise·M
Director
$230.6K
4.2K sh · $54.32 avg · 2 lots
Own +127%
-
Other·F
SVP, Chief Mktg & Tech Officer
$12.2K
153 sh · $80.00
Own -3%
-
Sell·S
CHIEF COMMERCIAL OFFICER
$336.3K
4.0K sh · $83.21
Own -16%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| May 7, 2026 | Windley David | Grant A | 1.5K | $0 |
| May 7, 2026 | Zay Richard H. | Sell S | 6.9K | $605.1K |
| May 7, 2026 | SHEAHAN MARK W | Grant A | 1.5K | $0 |
| May 7, 2026 | Mulligan Donal L | Grant A | 1.5K | $0 |
| May 7, 2026 | Morse Timothy R. | Grant A | 1.5K | $0 |
| May 7, 2026 | Hider Andrew P. | Grant A | 1.5K | $0 |
| May 7, 2026 | Glerum James T Jr. | Grant A | 1.5K | $0 |
| May 7, 2026 | GREEN MARIA C | Grant A | 1.5K | $0 |
| May 7, 2026 | EICHER CAROL S | Grant A | 1.5K | $0 |
| May 7, 2026 | Arvani Azita | Grant A | 1.5K | $0 |
| May 7, 2026 | ALLEN PATRICK E | Grant A | 1.5K | $0 |
| Apr 14, 2026 | Mulligan Donal L | Exercise M | 3.5K | $0 |
| Apr 14, 2026 | Mulligan Donal L | Other F | 2.5K | $193.6K |
| Apr 14, 2026 | Mulligan Donal L | Exercise M | 3.5K | $193.5K |
| Mar 6, 2026 | Huml David W. KEY | Other G | 53.5K2 lots | $0 |
| Mar 2, 2026 | Glerum James T Jr. | Buy P | 8.2K | $500.0K |
| Feb 28, 2026 | West Fay KEY | Other F | 945 | $57.7K |
| Feb 28, 2026 | Schottler Patrick W. | Other F | 194 | $11.8K |
| Feb 28, 2026 | Huml David W. KEY | Other F | 4.3K | $260.5K |
| Feb 28, 2026 | Balinski Barb | Other F | 451 | $27.5K |
| Feb 28, 2026 | Zay Richard H. | Other F | 840 | $51.3K |
| Feb 28, 2026 | Stokes Kristin A. | Other F | 514 | $31.4K |
| Feb 27, 2026 | Arvani Azita | Exercise M | 3.5K | $0 |
| Feb 27, 2026 | Arvani Azita | Exercise M | 3.5K | $193.5K |
| 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 | ALLEN PATRICK E | Grant A | 437 | $0 |
| Feb 26, 2026 | Schottler Patrick W. | Grant A | 6.1K2 lots | $0 |
| Feb 26, 2026 | Schottler Patrick W. | Other F | 552 | $34.6K |
| Feb 26, 2026 | Glerum James T Jr. | Grant A | 437 | $0 |
| Feb 26, 2026 | Balinski Barb | Grant A | 10.0K2 lots | $0 |
| Feb 26, 2026 | Balinski Barb | Other F | 1.8K | $113.5K |
| Feb 26, 2026 | Stokes Kristin A. | Other F | 2.0K | $126.3K |
| Feb 26, 2026 | Stokes Kristin A. | Grant A | 11.5K2 lots | $0 |
| Feb 26, 2026 | West Fay KEY | Grant A | 19.5K2 lots | $0 |
| Feb 26, 2026 | West Fay KEY | Other F | 3.6K | $228.7K |
| Feb 26, 2026 | Huml David W. KEY | Buy P | 4.0K3 lots | $257.5K |
| Feb 26, 2026 | Huml David W. KEY | Grant A | 64.2K2 lots | $0 |
| Feb 26, 2026 | Huml David W. KEY | Other F | 13.8K | $866.1K |
| Feb 26, 2026 | EICHER CAROL S | Exercise M | 3.5K | $0 |
| Feb 26, 2026 | EICHER CAROL S | Sell S | 3.1K | $194.0K |
| Feb 26, 2026 | EICHER CAROL S | Exercise M | 3.5K | $193.5K |
| Feb 26, 2026 | Zay Richard H. | Grant A | 17.5K2 lots | $0 |
| Feb 26, 2026 | Zay Richard H. | Other F | 3.3K | $205.1K |
| Feb 26, 2026 | Windley David | Exercise M | 4.2K2 lots | $0 |
| Feb 26, 2026 | Windley David | Sell S | 3.7K | $235.9K |
| Feb 26, 2026 | Windley David | Exercise M | 4.2K2 lots | $230.6K |
| Nov 3, 2025 | Schottler Patrick W. | Other F | 153 | $12.2K |
| 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.