[SCHEDULE 13G/A] Robert Half Inc. SEC Filing

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TL;DR: Mawer reports 3.9 m RHI shares (3.86 %) with sole voting/dispositive power; passive filing signals limited governance impact.

The Amendment No. 1 confirms Mawer’s continued investment in Robert Half but at <5 % ownership, below the threshold generally viewed as potentially activist. Sole voting and dispositive authority indicate Mawer controls the stake internally, yet its 13G (not 13D) status underscores a passive stance. For investors, the disclosure provides transparency on institutional ownership but does not alter fundamentals, guidance, or capital structure. The stake—worth roughly mid-hundreds of millions—shows institutional confidence without signaling strategic intent. Overall impact on share price or governance is likely minimal.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

ROBERT HALF INC.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

770323103

(CUSIP Number)

06/30/2025

(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)

SCHEDULE 13G

CUSIP No. 770323103

1

Names of Reporting Persons

Mawer Investment Management Ltd.

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

ALBERTA, CANADA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 3,874,294.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 3,942,158.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,942,158.00

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)

3.86 %

12

Type of Reporting Person (See Instructions)

IA

Comment for Type of Reporting Person: Based Upon 102,163,762 Common Stock of Robert Half Inc. (the "Issuer") outstanding as of April 30, 2025, as reported in the Issuer's 10-Q filed with the Securities and Exchange Commission on May 2, 2025.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: ROBERT HALF INC.
(b)	Address of issuer's principal executive offices: 2884 Sand Hill Road, Suite 200, Menlo Park, California, 94025
Item 2.
(a)	Name of person filing: Mawer Investment Management Ltd.
(b)	Address or principal business office or, if none, residence: 600, 517 - 10th Avenue SW Calgary, Alberta, Canada T2R 0A8
(c)	Citizenship: Canada
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 770323103
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: 3,942,158
(b)	Percent of class: 3.86 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 3,874,294
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 3,942,158
	(iv) Shared power to dispose or to direct the disposition of: 0
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.

Mawer Investment Management Ltd.

Signature:	/s/ David Ragan
Name/Title:	David Ragan, Portfolio Manager
Date:	07/10/2025