Reg FD Disclosure

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)  December 13, 2017       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.)   701 North Lilac Drive, P.O. Box 1452 Minneapolis, Minnesota     55440 (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):     o   Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)       o   Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)       o   Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))       o   Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company o If 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. o Item 7.01.                 Regulation FD Disclosure .   Tennant Company issued the press release attached hereto as Exhibit 99.1 on December 13, 2017 regarding a Schedule 13D filed with the Securities and Exchange Commission by PrimeStone Capital, LLP on December 13, 2017. The contents of Exhibit 99.1 are hereby incorporated by reference.   Item 9.01.                 Financial Statements and Exhibits .   (d)            Exhibits .                                99.1           Press release issued by Tennant Company on December 13, 2017. 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 thereunto duly authorized.       Tennant Company           Date:  December 13, 2017 By: /s/ Jeffrey L. Cotter       Jeffrey L. Cotter       Senior Vice President, General Counsel and Corporate Secretary           EXHIBIT INDEX Exhibit Number   Description 99.1   Press release issued by Tennant Company on December 13, 2017.