Company · Ownership research

TENNANT CO TNC

CIK 0000097134

Form 4 transactions dated Sep 1, 2023 to Sep 23, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 44 rows; the complete set is available through the API.

Insider filings on file run through 2026-09-11.

Insider purchases & sales

Purchased: $1.90M
Sold: $7.83M

Sep 1, 2023 – Sep 11, 2026
Available records · partial months are marked ·

202610 of 10 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
2026-08-12	Mulligan Donal L Director	Purchase	$538.72K 8,000 shares bought	100.00% added Trust holding	▾
2026-08-12	Morse Timothy R. Director	Purchase	$102.27K 1,500 shares bought	16.46% added Direct holding	▾
2026-05-07	Zay Richard H. CHIEF COMMERCIAL OFFICER	Sale	$605.10K 6,875 shares sold	19.99% sold Direct holding	▾
2026-03-02	Glerum James T Jr. Director	Purchase	$499.98K 8,163 shares bought	1867.96% added Direct holding	▾
2026-02-27	Arvani Azita Director	Sale	$193.79K 3,156 shares sold	15.33% sold Direct holding	▾
2026-02-27	Mulligan Donal L Director	Purchase	$184.83K 3,000 shares bought	60.00% added Trust holding	▾
2026-02-26	Windley David Director	Sale	$235.90K 3,694 shares sold	33.23% sold Direct holding	▾
2026-02-26	Huml David W. PRESIDENT AND CEO · Director	Purchase	$257.56K 4,000 shares bought	6.25% added Direct holding	▾
2026-02-26	EICHER CAROL S Director	Sale	$194.00K 3,130 shares sold	9.79% sold Direct holding	▾
2026-02-26	Mulligan Donal L Director	Purchase	$319.30K 5,000 shares bought	New holding Trust holding	▾

Showing 10 / 10 record groups in 2026. The complete set is available through the API.

TENNANT CO · TNC

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 10 of 10 purchase / sale groups and 30 of 44 other groups; the totals and the monthly series cover the whole window.

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{"ticker":"TNC","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.