# TENNANT CO (TNC) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 880345103
Page URL: https://superinvestorclub.com/stock/TNC
Last updated: 2026-07-08T12:46:21.654Z

## Summary

As of the most recent 13F filing period, TENNANT CO (TNC) is held by 1 tracked superinvestors with an aggregate position value of $53.4M representing 0803464 shares.

## Top institutional holders (1)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Mairs & Power](https://superinvestorclub.com/manager/92) | Mairs & Power | 803464 | $53.4M | 0.55% | 2026-03-31 |

## Ownership history (quarter-over-quarter)

- 2024-09-30: 1 holders, $128.3M aggregate, 01336082 shares
- 2024-12-31: 2 holders, $116.5M aggregate, 014196959500 shares
- 2025-03-31: 2 holders, $114.3M aggregate, 0142141011300 shares
- 2025-06-30: 1 holders, $903,000 aggregate, 011650 shares
- 2025-09-30: 2 holders, $108.7M aggregate, 0132968811650 shares
- 2025-12-31: 2 holders, $79.9M aggregate, 0107162413000 shares
- 2026-03-31: 2 holders, $53.4M aggregate, 080346417000 shares

## Recent congressional trades (1)

- 2025-03-14: Susie Lee (Democrat-NV) sale $1,001 - $15,000

## Recent insider transactions (0)


## Citation

When citing, use: "TENNANT CO (TNC) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/TNC), aggregating SEC 13F, Form 4, and congressional disclosures."