Boston Partners reports 4.26M Allegion shares (NYSE: ALLE)

Rhea-AI Filing Summary

Boston Partners filed Amendment No. 3 to a Schedule 13G/A reporting beneficial ownership of 4,260,020 shares of Allegion plc common stock, representing 4.95% of the class as of 03/31/2026. The filing shows sole voting power of 3,556,626 shares and sole dispositive power of 4,260,020. The signature block is dated 05/14/2026.

Insights

Institutional Ownership Analyst

Large institutional holder reports a sub-5% stake in Allegion plc.

Boston Partners discloses beneficial ownership of 4,260,020 shares, equal to 4.95% of Allegion plc's common stock as of 03/31/2026. The filing indicates sole voting power of 3,556,626 shares and sole dispositive power over the full 4,260,020 shares.

Because the position is reported below 5% and the filing is an amendment, this is a routine institutional disclosure; subsequent filings would show any material changes in stake or voting intent.

Corporate Governance Specialist

Disclosure clarifies voting and disposition authorities for a major holder.

The Schedule 13G/A explicitly attributes sole voting power of 3,556,626 and sole dispositive power of 4,260,020 to Boston Partners. Those figures define the firm's control over votes and sales of the reported shares.

Stake remains under the 5% threshold for Section 13 reporting triggers; governance impact is limited absent further accumulation or a change in intent.

Key Figures

Beneficial ownership: 4,260,020 shares Percent of class: 4.95% Sole voting power: 3,556,626 shares

3 metrics

Beneficial ownership 4,260,020 shares as of <date>03/31/2026</date>

Percent of class 4.95% percentage of common stock

Sole voting power 3,556,626 shares sole power to vote or to direct the vote

Key Terms

Schedule 13G/A, Beneficially owned, Sole Dispositive Power

3 terms

Schedule 13G/A regulatory

"Amendment No. 3 to Schedule 13G/A reporting beneficial ownership"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

Beneficially owned financial

"Amount beneficially owned: 4,260,020"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Sole Dispositive Power regulatory

"Sole power to dispose or to direct the disposition of: 4,260,020"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 3)

Allegion plc

(Name of Issuer)

Common Stock

(Title of Class of Securities)

G0176J109

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): G0176J109

1

Names of Reporting Persons

Boston Partners

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 3,556,626.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 4,260,020.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,260,020.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.95 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Allegion plc
(b)	Address of issuer's principal executive offices: UNIT NO. 233, THE CAPEL BUILDING, MARY'S ABBEY, DUBLIN 7, IRELAND D07 X324
Item 2.
(a)	Name of person filing: Boston Partners
(b)	Address or principal business office or, if none, residence: ONE BEACON STREET 30TH FLOOR BOSTON, Massachusetts 02108
(c)	Citizenship: Boston Partners - DELAWARE
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: G0176J109
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 4,260,020
(b)	Percent of class: 4.95 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: Boston Partners - 3,556,626
	(ii) Shared power to vote or to direct the vote: Boston Partners - 0
	(iii) Sole power to dispose or to direct the disposition of: Boston Partners - 4,260,020
	(iv) Shared power to dispose or to direct the disposition of: Boston Partners - 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Boston Partners

Signature:	/s/ Ali Farooqi
Name/Title:	Ali Farooqi / Senior Compliance Manager
Date:	05/14/2026

FAQ

What stake does Boston Partners report in Allegion plc (ALLE)?

Boston Partners reports beneficial ownership of 4,260,020 shares, representing 4.95% of Allegion plc's common stock as of 03/31/2026. The Schedule 13G/A amendment discloses sole voting and dispositive powers tied to that holding.

Does Boston Partners have voting control over the Allegion shares?

Yes. The filing lists sole voting power of 3,556,626 shares. It also reports sole dispositive power of 4,260,020 shares, indicating control over voting and disposition of the reported shares.

Is the Boston Partners position in ALLE above the 5% reporting threshold?

No. The Schedule 13G/A shows a 4.95% stake as of 03/31/2026, which is below the 5% threshold that typically triggers different reporting treatment under proxy rules.

When was the Schedule 13G/A amendment signed?

The filing's signature block is dated 05/14/2026. The ownership figures in the header are tied to 03/31/2026 as the reporting date for the disclosed stake.