Mairs and Power reports 5.91% Tennant stake

Mairs and Power, Inc. filed an amended Schedule 13G reporting a passive ownership stake in Tennant Company common stock.

Rhea-AI Filing Summary

Mairs and Power, Inc. filed an amended Schedule 13G reporting a passive ownership stake in Tennant Company common stock. The firm beneficially owns 1,071,474 shares, representing 5.91% of the outstanding common stock as of the event date. Mairs and Power has sole voting power over 1,067,773 shares and sole dispositive power over 1,071,474 shares, with no shared voting or dispositive power. The filer certifies the shares were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of Tennant.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What stake in Tennant Co (TNC) does Mairs and Power report?

Mairs and Power reports beneficial ownership of 1,071,474 Tennant common shares, equal to 5.91% of the class. This filing reflects a passive investment position rather than an attempt to influence control of the company.

Does Mairs and Power have voting control over Tennant Co (TNC) shares?

Mairs and Power has sole voting power over 1,067,773 Tennant shares and no shared voting power. It also has sole dispositive power over 1,071,474 shares, meaning it alone decides how these shares are voted and when they are sold.

Is Mairs and Power seeking to influence control of Tennant Co (TNC)?

No. Mairs and Power certifies the Tennant shares were acquired and are held in the ordinary course of business and not to change or influence control of Tennant, consistent with a passive institutional investor filing on Schedule 13G.

What type of security in Tennant Co (TNC) is covered in this filing?

The filing covers common stock of Tennant Company with a par value of $0.375 per share, identified by CUSIP 880345103. Mairs and Power’s reported 5.91% stake relates specifically to this class of common equity.

What is the event date for Mairs and Power’s ownership report in Tennant Co (TNC)?

The Schedule 13G/A is based on an event date of December 31, 2025. The ownership percentages and share amounts reported, including the 5.91% of Tennant common stock, are tied to that specified date.

Who signed the Tennant Co (TNC) Schedule 13G/A for Mairs and Power?

The report was signed by Brent M. Williams, CCO of Mairs and Power, Inc. He certifies, after reasonable inquiry, that the information about Tennant share ownership is true, complete, correct, and reflects ordinary-course investment activity.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 02/17/2026 - 03:11 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 8)

TENNANT CO

(Name of Issuer)

Common Stock, par value $0.375 per share

(Title of Class of Securities)

880345103

(CUSIP Number)

12/31/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 880345103

1

Names of Reporting Persons

Mairs and Power, Inc.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

MINNESOTA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,067,773.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,071,474.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,071,474.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.91 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: TENNANT CO
(b)	Address of issuer's principal executive offices: 10400 Clean Street, Eden Prairie, MN 55344
Item 2.
(a)	Name of person filing: Mairs and Power, Inc.
(b)	Address or principal business office or, if none, residence: 30 East 7th Street, Suite 2500, St. Paul, MN 55101
(c)	Citizenship: Minnesota
(d)	Title of class of securities: Common Stock, par value $0.375 per share
(e)	CUSIP No.: 880345103
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 1,071,474
(b)	Percent of class: 5.91%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 1067773
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 1071474
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Mairs and Power, Inc.

Signature:	Brent M. Williams
Name/Title:	Brent M. Williams, CCO
Date:	02/17/2026