Form 8-K

8-K — TENNANT CO

Accession: 0001104659-26-074936

Filed: 2026-06-17

Period: 2026-06-17

CIK: 0000097134

SIC: 3580 (REFRIGERATION & SERVICE INDUSTRY MACHINERY)

Item: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Item: Financial Statements and Exhibits

Documents

8-K — tm2617956d1_8k.htm (Primary)

EX-99 — EXHIBIT 99 (tm2617956d1_ex99.htm)

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0000097134

TENNANT CO

0000097134

2026-06-17

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UNITED

STATES

SECURITIES

AND EXCHANGE COMMISSION

Washington,

D.C. 20549

FORM 8-K

CURRENT

REPORT

Pursuant

to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date

of Report (Date of earliest event reported) June 17, 2026

TENNANT COMPANY

(Exact name of registrant as specified in its charter)

Minnesota

1-16191

41-0572550

(State or other

jurisdiction

of incorporation)

(Commission

File Number)

(IRS Employer

Identification No.)

10400 Clean Street

Eden Prairie, Minnesota

55344-2650

(Address of principal executive offices)

(Zip Code)

Registrant’s telephone number, including area code (763) 540-1200

Check

the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under

any of the following provisions (see General Instruction A.2. below):

¨ Written communications pursuant to Rule 425 under the Securities

Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange

Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under

the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under

the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name

of each exchange on which

registered

Common Stock, par value $0.375 per share

TNC

New York Stock Exchange

Indicate by check mark whether

the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or

Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

Emerging

growth company ¨

an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for

complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 5.02

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On June 17, 2026, Tennant Company (the “Company”) announced

the appointment of Richard H. (Rusty) Zay to the position of Chief Operating Officer (“COO”), effective July 1, 2026. Mr.

Zay, age 55, currently serves as the Company’s Senior Vice President, Chief Commercial Officer, a position he has held since March

2021. Mr. Zay joined the Company in June 2010 as Vice President, Global Marketing and was named Senior Vice President, Global Marketing

in October 2013 and Senior Vice President of the Americas business unit for the Company in 2014. In 2018, he assumed responsibility for

Tennant Research and Development as well.

In connection with Mr. Zay’s promotion to COO, the Compensation

Committee of the Company’s Board of Directors approved the grant of incremental equity awards to Mr. Zay to recognize his increased

responsibilities and to retain and incentivize his continued service. The total value of the awards to Mr. Zay will be $400,000, delivered

50% in the form of restricted stock units and 50% in the form of performance-based restricted stock units, each having the same terms

as the annual grants made earlier in 2026 to all executive officers, which awards will be granted when the Company’s quarterly trading

window opens.

A press release announcing Mr. Zay’s appointment is attached

as Exhibit 99.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit Number

Description

News Release dated June 17, 2026, announcing COO appointment.

104

Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934,

the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Tennant Company

Date: June 17, 2026

/s/ Kristin A. Erickson

Kristin A. Erickson

Senior Vice President, Chief Human Resources Officer, General Counsel and Corporate Secretary

EX-99 — EXHIBIT 99

EX-99

Filename: tm2617956d1_ex99.htm · Sequence: 2

Exhibit 99

FOR IMMEDIATE RELEASE

MEDIA CONTACT:

Jason Peterson

Director of Communications

jason.peterson@tennantco.com

1.651.216.0859

Tennant Company Names Richard

H. Zay Chief Operating Officer

MINNEAPOLIS, June 17, 2026—Tennant Company

(NYSE: TNC), a world leader in cleaning equipment and solutions, today announced that Richard H. (Rusty) Zay has been appointed Chief

Operating Officer, effective July 1, 2026. Zay, currently serving as the organization’s Chief Commercial Officer, has been

on the company’s leadership team since 2010. An industry veteran with more than 25 years of experience in sales, marketing, and

operations, he previously held leadership roles in other companies, including Whirlpool Corporation and Maytag Corporation.

In his new role, Zay will expand his leadership of Tennant’s

global customer-facing business units, supply chain, manufacturing operations, R&D, and marketing. He will be tasked with driving

strong financial results and value creation through rigorous execution, continuously improving cross-functional interaction, and driving

efficiency throughout the business.

“Rusty has a proven track record of creating alignment across

our business units to drive execution of new and existing strategies,” said Dave Huml, Tennant Company President and Chief Executive

Officer. "He is a strategic and innovative thinker who is committed to finding new ways to leverage technology to enhance our organizational

efficiency. Importantly, he is deeply committed to customer satisfaction, and to ensuring that Tennant remains a market leader through

differentiated service to our customers in every interaction.”

Zay joined Tennant Company in June of 2010, initially serving

as Vice President, Global Marketing. In 2014, he was promoted to Vice President of Americas Sales and Service. Following that, he served

as the Senior Vice President, Innovation & Technology before assuming his current role as Chief Commercial Officer.

Throughout his career with Tennant, Zay has been instrumental in driving

growth and adding value to the company’s performance. Most notably, he has led efforts focused on advancing new channel and customer

expansion, increasing adoption of new technology like robotics in the market, scaling enterprise operating models to support growth and

profitability, and enhancing the organization’s capabilities to deliver a superior customer experience.

“Tennant’s leadership position in the industry provides

unique opportunities to serve more customers in new and existing markets as we continue to reinvent how the world cleans,” said

Zay. “I’m honored to lead a very talented team that is focused on leveraging our recognized capabilities and scale, along

with innovative ideas about how to reach and serve our customers, to continue driving our growth strategy.”

Zay holds a Bachelor of Science in Management from Purdue University.

Zay’s leadership has extended beyond Tennant Company through his service as President and Secretary of the Association of American

Cleaning Equipment Manufacturers, where he has contributed to broader industry leadership and advancement. He also served on the Holy

Family Catholic High School Board of Directors and Finance Committee, reflecting his commitment to community leadership, governance,

and financial stewardship.

About Tennant Company

Founded in 1870, Tennant Company (TNC), headquartered in Eden Prairie,

Minnesota, is a world leader in the design, manufacture and marketing of solutions that help create a cleaner, safer and healthier world.

Its products include equipment for maintaining surfaces in industrial, commercial and outdoor environments; detergent-free and other

sustainable cleaning technologies; and cleaning tools and supplies. Tennant's global field service network is the most extensive in the

industry. Tennant Company had sales of $1.20 billion in 2025 and has approximately 4,500 employees. Tennant has manufacturing operations

throughout the world and sells products directly in more than 21 countries and through distributors in more than 100 countries. For more

information, visit www.tennantco.com and www.ipcworldwide.com. The Tennant Company logo and other trademarks designated

with the symbol “®” are trademarks of Tennant Company registered in the United States and/or other countries.

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