0000793074false00007930742025-08-072025-08-07

Date of Report (Date of earliest event reported):

(Exact name of registrant as specified in its charter)

(402) 895-6640

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:

☐ 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 CFR240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR40.13e-4(c))

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

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 ☐

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. ☐

On August 7, 2025, the Company's Board of Directors (the "Board") approved a new stock repurchase program under which the Company is authorized to repurchase up to 5 million shares of its common stock. Upon approval of the new program, the Board withdrew the previous stock repurchase authorization, which had approximately 1.8 million shares remaining available for repurchase. The Company may repurchase stock from time to time depending on market, economic and other factors. The new authorization will continue until the Board withdraws it.

On August 11, 2025, the Company issued a press release to announce these, among other, Board actions. A copy of the press release is furnished as Exhibit 99.1 to this Form 8-K. Such exhibit shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section 18, nor shall such exhibit be deemed incorporated by reference in any filing under the Exchange Act or the Securities Act of 1933, as amended (the “Securities Act”), unless the registrant expressly states that such exhibit is to be considered “filed” under the Exchange Act or incorporates such exhibit by specific reference in an Exchange Act or Securities Act filing.

    (d)    Exhibits.

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.