Are insiders buying TNC stock?

Yes — 3 distinct insiders have bought TNC (TENNANT CO) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Mar 2, 2026.

How much TNC stock have insiders bought?

Insiders have bought a combined $1.2M of TNC across 4 open-market purchases, based on SEC Form 4 filings.

What is an insider cluster buy in TNC?

A cluster buy is two or more distinct TENNANT CO insiders — officers, directors, or 10% owners — each buying TNC on the open market within a rolling window. TNC has 1 detected cluster buy to date.

Where does this TNC insider trading data come from?

Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.

TNC insider buying

1 cluster buy

TENNANT CO · Industrials

When two or more insiders at TENNANT CO buy TNC on the open market around the same time, that clustered conviction is one of the highest-signal patterns in SEC filing data. Below is every cluster we've detected in TNC plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.

Clusters

Distinct insiders

Total bought

$1.2M

Market cap

$1.5B

Detected clusters

Feb 26 – Mar 2, 2026
Detected Mar 2, 2026
High conviction3 insiders
Total bought
$1.2M
Market cap
$1.5B

All notable open-market buys in TNC

Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.

Date	Insider	Shares	Price	Value	Filing
Mar 2, 2026	Glerum James T Jr.cluster Director	8,163	$61.25	$500.0K	SEC ↗
Feb 27, 2026	Mulligan Donal Lcluster Director	3,000	$61.61	$184.8K	SEC ↗
Feb 26, 2026	Mulligan Donal Lcluster Director	5,000	$63.86	$319.3K	SEC ↗
Feb 26, 2026	Huml David W.cluster Director, PRESIDENT AND CEO	2,600	$64.02	$166.5K	SEC ↗

More Industrials stocks with insider cluster buys

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TNC insider buying — FAQ

Are insiders buying TNC stock?: Yes — 3 distinct insiders have bought TNC (TENNANT CO) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Mar 2, 2026.
How much TNC stock have insiders bought?: Insiders have bought a combined $1.2M of TNC across 4 open-market purchases, based on SEC Form 4 filings.
What is an insider cluster buy in TNC?: A cluster buy is two or more distinct TENNANT CO insiders — officers, directors, or 10% owners — each buying TNC on the open market within a rolling window. TNC has 1 detected cluster buy to date.
Where does this TNC insider trading data come from?: Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.

How we track insider buying in TNC

We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy TNC within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Every figure on this page traces back to an official filing; open any row to jump straight to the source document. What counts as a cluster buy?

This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding TNC.