Fiduciary Management reports 6.23% stake in Insight Enterprises (NSIT)

Rhea-AI Filing Summary

Insight Enterprises Inc. reported a Schedule 13G filing showing Fiduciary Management, Inc. beneficially owns 1,875,277 shares of Common Stock (CUSIP 45765U103), equal to 6.23% of the class as reported.

Fiduciary Management discloses 1,672,591 shares of sole voting power and sole dispositive power over 1,875,277 shares. The filing is signed by a company officer on 06/23/2026.

Insights

Corporate Governance Analyst

Schedule 13G shows a passive, reportable stake just above 6%.

The filing lists 1,875,277 shares beneficially owned, representing 6.23% of common stock; voting and dispositive powers are reported as sole authority for most shares. This signals a disclosed significant holder rather than an active control attempt.

Watch subsequent filings for any change in status or a conversion to a Schedule 13D if activist intent appears.

Portfolio Manager

Holding size is material for stewardship and engagement considerations.

At 6.23% ownership, the position is large enough to merit engagement and proxy attention; Fiduciary Management reports sole dispositive power over 1,875,277 shares. The filing does not state acquisition timing or intent beyond Schedule 13G conventions.

Investor relations disclosures and future amendments will clarify whether activity is passive or strategic.

Key Figures

Beneficial ownership: 1,875,277 shares Percent of class: 6.23% Sole voting power: 1,672,591 shares +2 more

5 metrics

Beneficial ownership 1,875,277 shares reported as beneficially owned

Percent of class 6.23% percent of common stock

Sole voting power 1,672,591 shares sole power to vote or direct the vote

Sole dispositive power 1,875,277 shares sole power to dispose or direct disposition

Signature date 06/23/2026 filing signed by Vice President Jessica Taske

Key Terms

Schedule 13G, Beneficially owned, Sole dispositive power

3 terms

Schedule 13G regulatory

"Schedule 13G filing header and ownership disclosure"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

Beneficially owned financial

"Amount beneficially owned: 1875277"

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: 1875277"

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.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 06/23/2026 - 03:50 PM Accepted by SEC EDGAR 06/23/2026 - 03:49 PM Learn about SEC filing dates

FAQ

What stake does Fiduciary Management report in INSIGHT ENTERPRISES (NSIT)?

Fiduciary Management reports beneficial ownership of 1,875,277 shares, equal to 6.23% of common stock. The filing also shows 1,672,591 shares with sole voting power and sole dispositive power over 1,875,277 shares.

Does the Schedule 13G filing indicate control or activist intent for NSIT?

The Schedule 13G filing reports a sizeable passive stake of 6.23%; it does not by itself indicate control or activist intent. A switch to Schedule 13D or additional disclosures would be needed to show active acquisition or control plans.

Who signed the INSIGHT ENTERPRISES Schedule 13G and when was it signed?

The filing is signed by Jessica Taske, Vice President, with the signature date shown as 06/23/2026. The reporting person is identified as Fiduciary Management, Inc. with Wisconsin citizenship noted.

What voting and dispositive powers are reported for Fiduciary Management in NSIT?

The filing lists 1,672,591 shares as sole power to vote or direct the vote, 0 shared voting power, and sole dispositive power over 1,875,277 shares. Shared dispositive power is reported as 1,875,277 in the form fields.

Is the Schedule 13G filing for NSIT considered material to shareholders?

A 6.23% reported holding is material enough to attract governance attention but does not by itself change control. Shareholders often note holdings above 5% for engagement and proxy considerations; further filings would clarify intent or changes.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

INSIGHT ENTERPRISES INC

(Name of Issuer)

Common Stock

(Title of Class of Securities)

45765U103

(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): 45765U103

1

Names of Reporting Persons

FIDUCIARY MANAGEMENT INC /WI/

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

WISCONSIN

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,672,591.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,875,277.00
8	Shared Dispositive Power 1,875,277.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,875,277.00

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)

6.2 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: INSIGHT ENTERPRISES INC
(b)	Address of issuer's principal executive offices: 2701 E INSIGHT WAY, CHANDLER, ARIZONA, 85286
Item 2.
(a)	Name of person filing: Fiduciary Management, Inc.
(b)	Address or principal business office or, if none, residence: 790 N. Water Street Suite #2100 Milwaukee, WI 53202
(c)	Citizenship: Wisconsin
(d)	Title of class of securities: Common Stock
(e)	CUSIP Number(s): 45765U103
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: 1875277
(b)	Percent of class: 6.23 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 1672591
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 1875277
	(iv) Shared power to dispose or to direct the disposition of: 1875277
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
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.

FIDUCIARY MANAGEMENT INC /WI/

Signature:	Jessica Taske
Name/Title:	Vice President
Date:	06/23/2026