TNC
TENNANT CO · Manufacturing · Market cap $1.2B
Insiders bought $641K net in the last 90 days ·0 sellers, 2 buyers· latest Form 4 filed Aug 13, 2026
Insider Buying
$1.9M
reported purchases (SEC code P)
Insider Selling
$1.2M
reported sales (SEC code S)
Unique Insiders
8
in the rolling window
Latest filing
Sep 11, 2026
Mulligan Donal L
TENNANT CO (TNC) has 36 SEC Form 4 filings (61 transaction rows) in the rolling window, disclosed by 8 distinct insiders. Most recent filing: Sep 11, 2026.
Inside the rolling window, 8 insiders at TENNANT CO reported 6 open-market purchases totaling $1.9M and 4 open-market sales totaling $1.2M. The most active filer is Director Mulligan Donal L with 3 filings. The most recent open-market filing is a purchase of 8,000 shares by Director Mulligan Donal L, dated Aug 12, 2026, worth $539K.
- Industry:Industrial - Machinery
- CEO:David W. Huml
- Employees:4,484
- HQ:Eden Prairie, MN, US
- IPO:1973-02-22
| Source | |||||||
|---|---|---|---|---|---|---|---|
Mulligan Donal LFirst in 5 months | Director | Purchase | 8,000 | $539K | Aug 13 | +1.4% | SEC ↗ |
Morse Timothy R.First filing | Director | Purchase | 1,500 | $102K | Aug 13 | +1.4% | SEC ↗ |
Zay Richard H.First filing | CHIEF COMMERCIAL OFFICER | Sale | 6,875 | $605K | May 11 | -20.2% | SEC ↗ |
Windley DavidFirst filing | Director | Sale | 3,694 | $236K | Mar 2 | +12.7% | SEC ↗ |
Huml David W.First filing | PRESIDENT AND CEO | Purchase | 4,000 | $258K | Mar 2 | +12.7% | SEC ↗ |
EICHER CAROL SFirst filing | Director | Sale | 3,130 | $194K | Mar 2 | +12.7% | SEC ↗ |
Arvani AzitaFirst filing | Director | Sale | 3,156 | $194K | Mar 2 | +12.7% | SEC ↗ |
| Director | Purchase | 5,000 | $319K | Mar 2 | +12.7% | SEC ↗ | |
| Director | Purchase | 3,000 | $185K | Mar 2 | — | SEC ↗ | |
Glerum James T Jr.First in 4 months | Director | Purchase | 8,163 | $500K | Mar 2 | — | SEC ↗ |
Earnings: last 7 quarters
Congress trading TNC 4 all-time
- DRep. Susie LeeOther$1,001 - $15,0002025-03-14
- DRep. Susie LeeOther$1,001 - $15,0002025-03-14
- DRep. Peter WelchOther$1,001 - $15,0002021-11-18
- DRep. Peter WelchPurchase$1,001 - $15,0002019-05-06
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does TNC have?
TENNANT CO (TNC) has 36 SEC Form 4 filings (61 transaction rows) in the rolling 365-day window, disclosed by 8 distinct insiders. Most recent filing: Sep 11, 2026.
When was the most recent SEC Form 4 filing for TNC?
The most recent Form 4 filing for TNC on Tracefour is dated Sep 11, 2026.
Who is the most active insider at TNC?
The most active SEC Form 4 filer at TNC in the rolling window is Director Mulligan Donal L, with 3 filings.
What is the net insider flow at TNC over the last 6 months?
Over the trailing 180 days, insiders at TNC have net bought $36K based on SEC Form 4 disclosures.
What is the total insider buy and sell value at TNC in the current window?
Inside the rolling window, insiders at TNC bought $1.9M and sold $1.2M based on SEC Form 4 filings.
Can I get alerts for TNC insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at TENNANT CO (TNC). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
TENNANT CO is in the Manufacturing sector.