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Who

David Windley

Director

Company insider

Files Form 4 as: Director, DHI Group; Director, Tennant.

In numbers

Trades disclosed
39
Buys
0
Sells
2
Bought
$0
Sold
$1.3M
Companies
2
Companies where not an officer
2
First trade
26 Feb 2016
Last trade
14 May 2026
Last filed
18 May 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
DHX DHI GroupDirector · Business Services · last 14 May 20260 buys · 0 sells
TNC TennantDirector · Machinery · last 7 May 20260 buys · 2 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
10Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
14 May 2026filed 18 May 2026DHX DHI GroupBusiness ServicesSEC FORM 4 Code A—33,602 at $0.00filing
14 May 2026filed 18 May 2026DHX DHI GroupBusiness ServicesSEC FORM 4 Code A—33,602 at $0.00filing
7 May 2026filed 11 May 2026TNC TennantMachinerySEC FORM 4 Code A—1,490 at $0.00filing
7 May 2026filed 11 May 2026TNC TennantMachinerySEC FORM 4 Code A—1,490 at $0.00filing
26 Feb 2026filed 2 Mar 2026TNC TennantMachinerySEC FORM 4 Code M$37K707 at $52.42filing
26 Feb 2026filed 2 Mar 2026TNC TennantMachinerySEC FORM 4 Code M$194K3,538 at $54.70filing
26 Feb 2026filed 2 Mar 2026TNC TennantMachinerySEC FORM 4 Sold$236K3,694 at $63.86filing
26 Feb 2026filed 2 Mar 2026TNC Tennantoption or derivative · MachinerySEC FORM 4 Code M—707 at $0.00filing
26 Feb 2026filed 2 Mar 2026TNC Tennantoption or derivative · MachinerySEC FORM 4 Code M—3,538 at $0.00filing
26 Feb 2026filed 2 Mar 2026TNC Tennantoption or derivative · MachinerySEC FORM 4 Code M—707 at $0.00filing
26 Feb 2026filed 2 Mar 2026TNC Tennantoption or derivative · MachinerySEC FORM 4 Code M—3,538 at $0.00filing
26 Feb 2026filed 2 Mar 2026TNC TennantMachinerySEC FORM 4 Code M$37K707 at $52.42filing
26 Feb 2026filed 2 Mar 2026TNC TennantMachinerySEC FORM 4 Code M$194K3,538 at $54.70filing
26 Feb 2026filed 2 Mar 2026TNC TennantMachinerySEC FORM 4 Sold$236K3,694 at $63.86filing
6 May 2025filed 8 May 2025DHX DHI GroupBusiness ServicesSEC FORM 4 Code A—95,041 at $0.00filing
6 May 2025filed 8 May 2025TNC TennantMachinerySEC FORM 4 Code A—1,815 at $0.00filing
8 May 2024filed 10 May 2024TNC TennantMachinerySEC FORM 4 Code A—1,073 at $0.00filing
25 Apr 2024filed 3 May 2024DHX DHI GroupBusiness ServicesSEC FORM 4 Code A—44,177 at $0.00filing
27 Feb 2024filed 29 Feb 2024TNC TennantMachinerySEC FORM 4 Sold$821K7,250 at $113.24filing
10 May 2023filed 11 May 2023DHX DHI GroupBusiness ServicesSEC FORM 4 Code A—29,333 at $0.00filing

News

Tennant Company Introduces Its First Autonomous Robotic Vacuum, the P1 VACTNC · roboticstomorrow.com · 20 Oct 2026

0 headlines in the last 90 days name David Windley; 1 article from the last 14 days about the 1 company they traded most, at most three about any one of them.

Sectors

Industrials2

Buys in green, sells in red, by the company’s sector.

Related people

Patrick E. AllenDirector · Director at Tennant Co, filing Form 4 there in the last year
Patrick W. SchottlerSVP, Robotics · SVP, Robotics at Tennant Co, filing Form 4 there in the last year
Richard H. ZaySVP, COO · SVP, COO at Tennant Co, filing Form 4 there in the last year
Timothy R. MorseDirector · Director at Tennant Co, filing Form 4 there in the last year
Donal L. MulliganDirector · Director at Tennant Co, filing Form 4 there in the last year