Allegion 8-K 2026-04-15

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

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FORM 8-K

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CURRENT REPORT

Pursuant to Section 13 or 15 (d) of The

Securities Exchange Act of 1934

Date of Report – April 15, 2026

(Date of earliest event reported)

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ALLEGION PUBLIC LIMITED COMPANY

(Exact name of registrant as specified in its charter)

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(353) (1) 6833399

(Registrant’s phone number, including area code)

N/A

(Former name or former address, if changed since last report)

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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:

Indicate by check mark whether the registrant is an emerging growth company as defined in 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 April 15, 2026, the Board replenished the funds available for the repurchase of the Company’s ordinary shares under its existing share repurchase program and, as a result, authorized the repurchase of a total amount of up to $500 million of the Company’s ordinary shares under the program. Share repurchases may be made from time-to-time in open market, accelerated stock repurchase or privately negotiated transactions, including pursuant to one or more Rule 10b5-1 trading plans. The timing and manner of any share repurchase and the actual number of ordinary shares repurchased will be determined at the discretion of management based on a variety of factors, including, among others, the Company’s stock price, corporate and regulatory requirements, and other general market and economic conditions.

SIGNATURE

Pursuant to the requirements of Section 12 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.