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nnbr-20260304NN, Inc.March 4, 20260000918541falseCharlotteNorth Carolina00009185412026-03-042026-03-04

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): March 4, 2026

NN, Inc. (Exact name of registrant as specified in its charter)

Delaware 001-39268 62-1096725 (State or other jurisdiction of incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

6210 Ardrey Kell Road, Suite 120 Charlotte, North Carolina 28277 (Address of principal executive offices)(Zip Code)

(980) 264-4300 (Registrant’s telephone number, including area code) (Former name or former address, if changed since last report)

Check the appropriate box 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 classTrading symbolName of each exchange on which registered Common Stock, par value $0.01NNBRThe Nasdaq Stock Market LLC

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.  ☐

ITEM 2.02    RESULTS OF OPERATIONS AND FINANCIAL CONDITION

On March 4, 2026, NN, Inc. (the “Company”) issued a press release announcing the Company’s financial results for the quarter and year ended December 31, 2025. The full text of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K (the "Current Report"). Pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”), the information furnished pursuant to Item 2.02 of this Current Report (including Exhibit 99.1) is deemed to have been furnished and shall not be deemed to be “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. Such information shall not be incorporated by reference into any filing of the Company, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

ITEM 7.01    REGULATION FD DISCLOSURE

On March 4, 2026, the Company posted a supplemental presentation to its website, https://investors.nninc.com/, which will be presented during its quarterly investor conference call on March 5, 2026, at 9:00 a.m. ET. The supplemental presentation is included as Exhibit 99.2 to this Current Report. Pursuant to the rules and regulations of the SEC, the information furnished pursuant to Item 7.01 of this Current Report (including Exhibit 99.2) is deemed to have been furnished and shall not be deemed to be “filed” for purposes of Section 18 of the Exchange Act or otherwise subject to the liabilities of that section. Such information shall not be incorporated by reference into any filing of the Company, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

ITEM 9.01    FINANCIAL STATEMENTS AND EXHIBITS

(d)    Exhibits.

Exhibit No.  Description of Exhibit 99.1  Press Release issued by NN, Inc., dated March 4, 2026

99.2Earnings Presentation, dated March 5, 2026

104Cover 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.

Date: March 4, 2026

NN, INC.

By:/s/ Christopher H. Bohnert Name:Christopher H. Bohnert Title:Senior Vice President and Chief Financial Officer