Institutional Holder Mawer Reports 2.73M Insperity Shares (7.24%)

Rhea-AI Filing Summary

Mawer Investment Management Ltd. reported beneficial ownership of 2,726,579 shares of Insperity, Inc. common stock, equal to 7.24% of the class based on 37,673,681 shares outstanding as of July 25, 2025. Mawer discloses sole voting power for 2,695,079 shares and sole dispositive power for 2,726,579 shares. The filing, captioned as an amendment to Schedule 13G, indicates the securities were acquired and are held in the ordinary course of business and not for the purpose of changing control. The reporting person is organized in Alberta, Canada, and the filing is signed by John Wilson, Portfolio Manager, dated 09/03/2025. The issuer’s principal executive offices are listed in Kingwood, Texas.

Positive

• Material ownership disclosed: Mawer holds 2,726,579 shares, representing 7.24% of the class.
• Sole voting and dispositive power: Mawer reports sole voting power for 2,695,079 shares and sole dispositive power for 2,726,579 shares.

Negative

• None.

Insights

Securities Analyst

TL;DR: A non-U.S. investment adviser holds a material 7.24% stake, giving it significant voting and dispositive control over a portion of Insperity shares.

This Schedule 13G/A discloses that Mawer Investment Management Ltd. beneficially owns 2,726,579 shares of Insperity, representing 7.24% of outstanding common stock based on the issuer's reported 37,673,681 shares. The filer reports near-complete sole voting control over those holdings (2,695,079 shares) and sole dispositive power for all shares reported. As this filing is under the 13G regime and includes the certification that shares are held in the ordinary course of business, it signals a passive, non-control intent while still representing a material ownership stake that investors and issuers will note for shareholder composition and voting considerations.

Corporate Governance Expert

TL;DR: Mawer’s disclosure is a material governance datapoint: a single institutional holder now exceeds the 5% reporting threshold.

The amendment confirms Mawer exceeds the 5% threshold with sole voting and dispositive powers over most of its position. The filing includes the required certification that the holdings are not for the purpose of influencing control. For corporate governance, a 7.24% holder can be influential in proxy votes or director elections depending on other institutional positions. The filing provides the reporting address and identifies the signatory as Portfolio Manager John Wilson, dated 09/03/2025, meeting disclosure formalities.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 6)

Insperity, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

45778Q107

(CUSIP Number)

08/29/2025

(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. 45778Q107

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 2,695,079.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 2,726,579.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,726,579.00

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)

7.24 %

12

Type of Reporting Person (See Instructions)

IA

Comment for Type of Reporting Person: Based upon 37,673,681 shares of Common Stock of Insperity, Inc. (the "Issuer") outstanding as of July 25, 2025 as reported in the Issuer's Form 10-Q filed with the Securities and Exchange Commission on August 1, 2025.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Insperity, Inc.
(b)	Address of issuer's principal executive offices: 19001 Crescent Springs Drive, Kingwood, Texas, 77339
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.: 45778Q107
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: 2,726,579
(b)	Percent of class: 7.24%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 2,695,079
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 2,726,579
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	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.

Mawer Investment Management Ltd.

Signature:	/s/ John Wilson
Name/Title:	John Wilson, Portfolio Manager
Date:	09/03/2025

FAQ

How many Insperity (NSP) shares does Mawer Investment Management hold?

Mawer Investment Management Ltd. beneficially owns 2,726,579 shares of Insperity common stock according to the filing.

What percentage of Insperity (NSP) does Mawer own?

The filing states Mawer owns 7.24% of Insperity's outstanding common stock based on 37,673,681 shares outstanding as of July 25, 2025.

Does Mawer have voting control over its Insperity shares?

Yes. Mawer reports sole voting power for 2,695,079 shares and sole dispositive power for 2,726,579 shares.

When was the Schedule 13G/A signed and by whom?

The document is signed by John Wilson, Portfolio Manager, with signature date 09/03/2025.

Is the Mawer position intended to influence control of Insperity?

The filing includes a certification stating the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control.