Tennant Co
TNC- Exchange
- NYSE
- Industry
- Refrigeration & Service Industry Machinery
- SEC CIK
- 0000097134
In the last 90 days, Tennant Co insiders filed 3 open-market purchases and 0 sales; 239 institutions reported holding it in 13F filings for Q2 2026, worth $1.57B in total; Soros Fund Management is the only superinvestor holding it.
Holders of 5% or more of TNC
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Tennant Co, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 15.00%2.82M shares | – | Apr 28, 20251 filing | Apr 28, 2025 | SEC |
| Vanguard Portfolio Management LLC | 13G | 6.64%1.20M shares | New | Apr 29, 20261 filing | Apr 29, 2026 | SEC |
| Vanguard Capital Management LLC | 13G | 5.31%957.8K shares | New | Apr 30, 20261 filing | Apr 30, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
9 Schedule 13D and 13G filings on Tennant Co, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Sep 22, 20264:15 PM ET | Gamco Investors, Inc. Et Aland 8 others | 13D/A | 4.40%752.4K shares | +0.60 ppfrom 3.80%Below 5% | Sep 21, 2026 | SEC |
| May 13, 202610:42 AM ET | Mairs & Power Inc | 13G/A | 4.40%789.9K shares | −1.51 ppfrom 5.91%Below 5% | Mar 31, 2026 | SEC |
| Apr 30, 20262:00 PM ET | Vanguard Capital Management LLC | 13G | 5.31%957.8K shares | New | Mar 31, 2026 | SEC |
| Apr 29, 20263:52 PM ET | Vanguard Portfolio Management LLC | 13G | 6.64%1.20M shares | New | Mar 31, 2026 | SEC |
| Mar 27, 20261:35 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Mar 9, 20264:03 PM ET | Gamco Investors, Inc. Et Aland 8 others | 13D | 3.80%675.4K shares | NewBelow 5% | Mar 6, 2026 | SEC |
| Feb 17, 20263:11 PM ET | Mairs & Power Inc | 13G/A | 5.91%1.07M shares | −1.66 ppfrom 7.57% | Dec 31, 2025 | SEC |
| May 15, 20253:57 PM ET | Mairs & Power Inc | 13G/A | 7.57%1.42M shares | – | Mar 31, 2025 | SEC |
| Apr 28, 20254:52 PM ET | BlackRock, Inc. | 13G/A | 15.00%2.82M shares | – | Mar 31, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Tennant Co shares.
No Form 144 notices for Tennant Co are on file.