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iex-202602040000832101false00008321012026-02-042026-02-04

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: February 4, 2026 (Date of earliest event reported)

IDEX CORPORATION

(Exact name of registrant as specified in its charter)

Delaware1-1023536-3555336 (State or other jurisdiction (Commission File Number)(IRS Employer of incorporation)Identification No.)

3100 Sanders Road, Suite 301 Northbrook, Illinois 60062 (Address of principal executive offices, including zip code) (847) 498-7070 (Registrant’s telephone number, including area code)

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 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Title of Each ClassTrading Symbol(s)Name of Each Exchange on Which Registered Common Stock, par value $0.01 per shareIEXNew 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 (§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 February 4, 2026, IDEX Corporation (the “Company”) issued a press release announcing financial results for the period ended December 31, 2025. A copy of the press release is furnished as Exhibit 99.1 to this report.

The information contained in this Item 2.02 (including Exhibit 99.1 attached hereto) is being furnished and shall not be deemed to be “filed” for the 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 and shall not be incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01 – Financial Statements and Exhibits.

(d)    Exhibits

99.1    Press release dated February 4, 2026 announcing IDEX Corporation’s financial results for the period ended December 31, 2025.

104.0     Cover Page Interactive Data File - the cover page XBRL tags are embedded within the Inline XBRL document.

SIGNATURE

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.

IDEX CORPORATION

By:/s/ SEAN M. GILLEN Sean M. Gillen Senior Vice President and Chief Financial Officer February 4, 2026

iex-202510290000832101false00008321012025-10-292025-10-29

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: October 29, 2025 (Date of earliest event reported)

IDEX CORPORATION

(Exact name of registrant as specified in its charter)

Delaware1-1023536-3555336 (State or other jurisdiction (Commission File Number)(IRS Employer of incorporation)Identification No.)

3100 Sanders Road, Suite 301 Northbrook, Illinois 60062 (Address of principal executive offices, including zip code) (847) 498-7070 (Registrant’s telephone number, including area code)

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 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 Symbol(s)Name of each exchange on which registered Common Stock, par value $.01 per shareIEXNew 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 (§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 October 29, 2025, IDEX Corporation (the “Company”) issued a press release announcing financial results for the period ended September 30, 2025. A copy of the press release is furnished as Exhibit 99.1 to this report.

The information contained in this Item 2.02 (including Exhibit 99.1 attached hereto) is being furnished and shall not be deemed to be “filed” for the 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 and shall not be incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01 – Financial Statements and Exhibits.

(d)    Exhibits

99.1    Press release dated October 29, 2025 announcing IDEX Corporation’s quarterly operating results for the period ended September 30, 2025.

104.0     Cover Page Interactive Data File - the cover page XBRL tags are embedded within the Inline XBRL document.

SIGNATURE

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.

IDEX CORPORATION

By:/s/    AKHIL MAHENDRA Akhil Mahendra Interim Chief Financial Officer and Vice President, Corporate Development October 29, 2025