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TENNANT CO

TNC Net selling
CIK 0000097134 #2436 in the set updated 17 Sep 2026
Bought (120 mo)
$1.90M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$47.05M
$0.00 on a plan · $40.40M straight out of an exercise
Sold at will
$6.65M
23 of 124 sales
Net
−$45.15M
−$4.75M against sales at will

By person

32 insiders · 140 transactions
9.5×

David W. Huml holds 9.5 times base salary in stock. $9.45M of shares against $992.39K in salary for 2025.

Salary from the company's own proxy. The shares are what David W. Huml last reported holding, valued at $68.18, the price Common Stock was last bought or sold at on the open market here, on 12 Aug 2026.

Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
KILLINGSTAD CHRIS
Director
$20.65M (42) scheduled
−$20.65M
163,856
0.9611%
$11.17M
+13.3%
Zay Richard H.
SVP, COO
$6.78M (19) scheduled
−$6.78M
30,225
0.1773%
$2.06M
+125.6%
PAULSON THOMAS
SVP, CFO
$5.19M (10) scheduled
−$5.19M
32,692
0.1918%
$2.23M
−8.4%
Huml David W.
PRESIDENT AND CEO
$257.56K (3)
$4.70M (12) scheduled
−$4.44M
138,559
0.8127%
$9.45M
+4,279%
McKnight Carol E.
FORMER, SVP, CHIEF ADMIN OFFR
$2.37M (5) scheduled
−$2.37M
21,760
0.1276%
$1.48M
+385.5%
Sonnenberg Steven Alan
Director
$2.15M (7) scheduled
−$2.15M
22,994
0.1349%
$1.57M
+78.8%
Windley David
Director
$1.06M (2)
−$1.06M
8,912
0.0523%
$607.62K
+713.1%
EICHER CAROL S
Director
$968.98K (8) scheduled
−$968.98K
30,326
0.1779%
$2.07M
+253.5%
Arvani Azita
Director
$873.87K (5) scheduled
−$873.87K
18,925
0.1110%
$1.29M
+369.8%
Glerum James T Jr.
Director
$499.98K (1)
+$499.98K
10,090
0.0592%
$687.94K
Wilson Heidi M
SVP, General Counsel and Sec'y
$414.84K (1) scheduled
−$414.84K
22,939
0.1345%
$1.56M
+7.2%
Balinski Barb
SVP, Chief Transf Officer
$293.29K (2)
−$293.29K
19,218
0.1127%
$1.31M
+1,247%
ERICKSON KRISTIN A.
SVP, CHRO & GC
$279.59K (3) scheduled
−$279.59K
25,176
0.1477%
$1.72M
+1,977%
WICHMANN DAVID S
Director
$233.01K (2) scheduled
−$233.01K
14,722
0.0863%
$1.00M
+108.2%
Morse Timothy R.
Director
$102.27K (1)
+$102.27K
10,614
0.0623%
$723.66K
Mulligan Donal L
Director
$1.04M (3)
$1.10M (6) scheduled
−$57.11K
38,175
0.2239%
$2.60M
+480.3%
West Fay
SENIOR VP, CFO
48,253
0.2830%
$3.29M
SHANK STEPHEN G
Director
36,810
0.2159%
$2.51M
+5.7%
Austen William F.
Director
26,944
0.1580%
$1.84M
+105.3%
Schottler Patrick W.
SVP, Robotics
13,857
0.0813%
$944.77K
+366.9%
GREEN MARIA C
Director
12,709
0.0745%
$866.50K
Woodward Keith Alan
Senior VP, CFO
12,624
0.0740%
$860.70K
Schaefer Michael
SVP, Chief Technical Officer
12,459
0.0731%
$849.45K
+11.7%
Cotter Jeffrey Louis
Sr VP and General Counsel
7,561
0.0443%
$515.51K
Moorefield Jeffrey C.
Sr VP, Global Operations
7,043
0.0413%
$480.19K
+27.4%
Hider Andrew P.
Director
6,987
0.0410%
$476.37K
Christianson Brock R.
SVP, CHIEF HR OFFICER
6,315
0.0370%
$430.56K
Glusick Daniel E.
SVP, OPERATIONS
5,940
0.0348%
$404.99K
Talbott Mary E
Senior VP, GC and Corp. Sec.
5,738
0.0337%
$391.22K
SHEAHAN MARK W
Director
4,348
0.0255%
$296.45K
CEBULLA ANDREW J.
Interim CFO
2,027
0.0119%
$138.20K
+39.6%
ALLEN PATRICK E
Director
1,927
0.0113%
$131.38K
Insider
Date
Role
Action
Shares
Price
Amount
Zay Richard H.
7 May 2026
CHIEF COMMERCIAL OFFICER
Sell
6,875
$88.02
$605.10K
Zay Richard H.
19 Aug 2025
CHIEF COMMERCIAL OFFICER
Sell
4,042
$83.21
$336.32K
Balinski Barb
28 Feb 2025
SVP, Chief Transf Officer
Sell
1,717
$86.42
$148.38K
Balinski Barb
28 Aug 2024
SVP, INNOVATION & TECHNOLOGY
Sell
1,500
$96.61
$144.91K
Windley David
27 Feb 2024
Director
Sell
7,250
$113.24
$820.95K
Zay Richard H.
3 May 2023
CHIEF COMMERCIAL OFFICER
Sell
3,719
$79.46
$295.51K
Zay Richard H.
16 Aug 2022
CHIEF COMMERCIAL OFFICER
Sell
441
$71.52
$31.54K
Zay Richard H.
16 Aug 2022
CHIEF COMMERCIAL OFFICER
Sell
2,059
$70.63
$145.42K
Zay Richard H.
10 May 2021
Chief Commercial Officer
Sell
1,084
$85.84
$93.05K
Zay Richard H.
10 May 2021
Chief Commercial Officer
Sell
2,698
$84.54
$228.09K
Huml David W.
10 May 2021
President and CEO
Sell
3,932
$86.62
$340.57K
Huml David W.
10 May 2021
President and CEO
Sell
1,063
$85.23
$90.60K
KILLINGSTAD CHRIS
8 Mar 2021
Director
Sell
3,809
$80.00
$304.72K
KILLINGSTAD CHRIS
22 Jan 2021
President and CEO
Sell
3,809
$75.00
$285.68K
Huml David W.
7 Dec 2020
Chief Operating Officer
Sell
492
$69.29
$34.09K
KILLINGSTAD CHRIS
24 Nov 2020
President and CEO
Sell
15,302
$70.00
$1.07M
Zay Richard H.
9 Nov 2020
SVP, Technology and Innovation
Sell
14,731
$64.00
$942.78K
Huml David W.
4 Dec 2019
SVP, Global Marketing
Sell
506
$79.06
$40.00K
Huml David W.
14 Nov 2019
SVP, Global Marketing
Sell
424
$70.10
$29.72K
Huml David W.
1 May 2018
Sr. VP, Global Marketing
Sell
415
$72.99
$30.29K
Zay Richard H.
23 Apr 2018
SVP - The Americas
Sell
664
$73.00
$48.47K
PAULSON THOMAS
11 Jan 2018
Sr. Vice President and CFO
Sell
6,694
$72.90
$488.00K
Zay Richard H.
2 Jun 2017
SVP, The Americas
Sell
1,280
$73.00
$93.44K

What was left out

Form 4 filings counted 313
Amendments (4/A) skipped 8
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 101
Sales at will 23
Transactions with no price 0
Shares from compensation/vesting 1,478,610
Sales filed before the plan box existed 17
History held since 3 Nov 2016