Insight Enterprises (NSIT) institutional filings show Morgan Stanley 9.5% stake

Rhea-AI Filing Summary

Insight Enterprises Inc. ownership update: Institutional filers reported beneficial ownership stakes in Common Stock. Morgan Stanley's reporting units are shown with 9.5% beneficial ownership (2,845,839 shares) and related shared voting and dispositive powers. Atlanta Capital and Eaton Vance filings show 8.9% (2,689,713 shares) and 5.8% (1,736,069 shares), respectively.

The amendment clarifies Item responses, includes a Joint Filing Agreement and an Item 7 exhibit identifying relevant subsidiaries; the filing cites the Release governing aggregated MS reporting units.

Insights

Institutional Ownership Analyst

Large passive holdings by institutional managers are disclosed; filing is informational.

The schedule amends beneficial ownership positions for multiple institutional filers, listing share counts and percentage stakes: Morgan Stanley reporting units (9.5%, 2,845,839 shares), Atlanta Capital (8.9%, 2,689,713 shares), Eaton Vance (5.8%, 1,736,069 shares). These figures reflect shared voting/dispositive powers where shown.

Ownership changes, if any, are not quantified here; subsequent filings would show transactions. The exhibit structure and joint filing agreement formalize reporting responsibilities.

Corporate Governance Specialist

Filing clarifies which Morgan Stanley units are included under the Release.

The amendment references the Release No. 34-39538 aggregation rule and attaches Item 7 information and a Joint Filing Agreement. This clarifies which MS Reporting Units' holdings are aggregated for beneficial ownership reporting.

For governance purposes, shared voting and dispositive powers are listed; interpretation of control implications depends on vote concentration and other holders not shown here.

Key Figures

Morgan Stanley beneficial ownership: 2,845,839 shares Shared voting power (MS): 2,542,342 shares Shared dispositive power (MS): 2,717,071 shares +2 more

5 metrics

Morgan Stanley beneficial ownership 2,845,839 shares reported as <percent>9.5%</percent> beneficial ownership

Shared voting power (MS) 2,542,342 shares Morgan Stanley reporting units; listed on cover responses

Shared dispositive power (MS) 2,717,071 shares Morgan Stanley reporting units; listed on cover responses

Atlanta Capital beneficial ownership 2,689,713 shares reported as <percent>8.9%</percent>

Eaton Vance beneficial ownership 1,736,069 shares reported as <percent>5.8%</percent>

Key Terms

Schedule 13G/A, beneficial ownership, MS Reporting Units, Joint Filing Agreement

4 terms

Schedule 13G/A regulatory

"Amendment No. 3 and cover page disclosure"

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.

beneficial ownership regulatory

"Amount beneficially owned: See the response(s) to Item 9"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

MS Reporting Units regulatory

"securities beneficially owned by certain operating units (the "MS Reporting Units")"

Joint Filing Agreement legal

"Exhibit 99.1 Joint Filing Agreement"

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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 3)

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

Morgan Stanley

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 0.00
6	Shared Voting Power 2,542,342.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,717,071.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,845,839.00

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)

9.5 %

12

Type of Reporting Person (See Instructions)

HC, CO

SCHEDULE 13G

CUSIP Number(s): 45765U103

1

Names of Reporting Persons

Atlanta Capital Management Company, LLC

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 0.00
6	Shared Voting Power 2,400,197.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,563,362.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,689,713.00

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)

8.9 %

12

Type of Reporting Person (See Instructions)

IA, CO

SCHEDULE 13G

CUSIP Number(s): 45765U103

1

Names of Reporting Persons

Eaton Vance Atlanta Capital SMID-Cap Fund

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

MASSACHUSETTS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,736,069.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,736,069.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,736,069.00

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)

5.8 %

12

Type of Reporting Person (See Instructions)

IV

SCHEDULE 13G

Item 1.
(a)	Name of issuer: INSIGHT ENTERPRISES INC
(b)	Address of issuer's principal executive offices: 2701 E INSIGHT WAY, CHANDLER, AZ, 85286
Item 2.
(a)	Name of person filing: 1: Morgan Stanley 2: Atlanta Capital Management Company, LLC 3: Eaton Vance Atlanta Capital SMID-Cap Fund
(b)	Address or principal business office or, if none, residence: 1: 1585 Broadway, New York, NY 10036 ;2: 1075 Peachtree Street, Suite 2100, Atlanta, GA 30309 ;3: One Post Office Square, Boston, Massachusetts 02109
(c)	Citizenship: 1: Delaware 2: Delaware 3: Massachusetts
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 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: See the response(s) to Item 9 on the attached cover page(s).
(b)	Percent of class: 9.5 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: See the response(s) to Item 5 on the attached cover page(s).
	(ii) Shared power to vote or to direct the vote: See the response(s) to Item 6 on the attached cover page(s).
	(iii) Sole power to dispose or to direct the disposition of: See the response(s) to Item 7 on the attached cover page(s).
	(iv) Shared power to dispose or to direct the disposition of: See the response(s) to Item 8 on the attached cover page(s).
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.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See Exhibit 99.2
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. * In Accordance with the Securities and Exchange Commission Release No. 34-39538 (January 12, 1998) (the "Release"), this filing reflects the securities beneficially owned, or that may be deemed to be beneficially owned, by certain operating units (collectively, the "MS Reporting Units") of Morgan Stanley and its subsidiaries and affiliates (collectively, "MS"). This filing does not reflect securities, if any, beneficially owned by any operating units of MS whose ownership of securities is disaggregated from that of the MS Reporting Units in accordance with the Release.

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.

Morgan Stanley

Signature:	Claire Gordon
Name/Title:	Authorized Signatory, Morgan Stanley
Date:	05/11/2026

Atlanta Capital Management Company, LLC

Signature:	Kelly Williams
Name/Title:	Authorized Signatory, Atlanta Capital Management Company, LLC
Date:	05/11/2026

Eaton Vance Atlanta Capital SMID-Cap Fund

Signature:	Kelly Williams
Name/Title:	Authorized Signatory, Eaton Vance Atlanta Capital SMID-Cap Fund
Date:	05/11/2026

Exhibit Information

EXHIBIT NO. EXHIBITS ------------------ ------------------------------------ 99.1 Joint Filing Agreement 99.2 Item 7 Information * Attention. Intentional misstatements or omissions of fact constitute federal criminal violations (see 18 U.S.C. 1001).

FAQ

What stake does Morgan Stanley report in NSIT?

Morgan Stanley's reporting units are shown with 9.5% beneficial ownership (2,845,839 shares). The amendment lists shared voting power of 2,542,342 and shared dispositive power of 2,717,071, per the cover responses.

How much does Atlanta Capital own in NSIT?

Atlanta Capital Management Company, LLC reports 8.9% beneficial ownership (2,689,713 shares). The cover responses show shared voting power of 2,400,197 and shared dispositive power of 2,563,362.

What does Eaton Vance disclose for NSIT ownership?

Eaton Vance Atlanta Capital SMID-Cap Fund reports 5.8% beneficial ownership (1,736,069 shares) with shared voting and dispositive power both listed as 1,736,069 on the cover response.

Does the filing change control of Insight Enterprises (NSIT)?

No control transfer is stated; the amendment reports beneficial ownership figures and shared powers. It includes a Joint Filing Agreement and Item 7 exhibit identifying reporting subsidiaries, without alleging change of control.

What is the significance of the Release referenced in the filing?

The filing cites Release No. 34-39538 to explain aggregation of securities held by certain Morgan Stanley operating units. It clarifies which MS Reporting Units' holdings are combined for beneficial ownership reporting purposes.