Allegion plc0001579241false00015792412026-06-042026-06-040001579241us-gaap:CommonStockMember2026-06-042026-06-040001579241alle:ThreePointFivePercentSeniorNotesDue2029Member2026-06-042026-06-04

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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 June 4, 2026, Allegion plc (the “Company”) held its 2026 annual general meeting of shareholders (the “AGM”) in Dublin, Ireland. At the AGM, the shareholders of the Company:

Shares were voted on these proposals as follows:

Proposals 1(a)-(h). Election of eight (8) director nominees for one-year terms beginning at the AGM and expiring at the Company’s 2027 Annual General Meeting of Shareholders and until their respective successors are duly elected and qualified:

Proposal 2. Advisory approval of the compensation of the Company’s named executive officers:

Proposal 3. Advisory vote on whether an advisory shareholder vote to approve the compensation of the Company’s named executive officers should occur every one, two or three years:

In light of the shareholder vote on Proposal 3, the Company will hold an advisory vote on the compensation of the Company’s named executive officers every year.

Proposal 4. Ratification of the appointment of PricewaterhouseCoopers as the Company’s independent registered public accounting firm and authorization of the Audit and Finance Committee of the Board to set the independent registered public accounting firm’s remuneration for the fiscal year ending December 31, 2026:

Proposal 5. Approval of renewal of the Board’s authority to issue shares under Irish law.

Proposal 6. Approval of renewal of the Board’s authority to issue shares for cash without first offering shares to existing shareholders (Special Resolution under Irish law):

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.