[Form 4] WESCO INTERNATIONAL INC Insider Trading Activity

Rhea-AI Filing Summary

Matthew S. Kulasa, identified as SVP, Corporate Controller & CAO of Wesco International, Inc. (WCC), reported a transaction dated 09/30/2025. The filing records the acquisition of 2.1551 dividend equivalent rights (DERs) credited in connection with the company’s quarterly dividend and accrued to restricted stock units held by the reporting person. Each DER is described as the economic equivalent of one share and vests on the same schedule as the underlying RSUs. The report shows 0 purchase price for the DERs and lists 4,110.0776 shares (or share equivalents) beneficially owned following the transaction. The Form 4 was signed by an attorney-in-fact and dated 10/02/2025.

Positive

• 2.1551 DERs accrued to the reporting person with a $0 price (dividend-equivalent accrual)
• Beneficial ownership updated to 4,110.0776 share equivalents after the transaction

Negative

• None.

Insights

Equity Compensation Specialist

Insider received dividend equivalent rights tied to RSUs; no cash outlay.

The filing documents the accrual of 2.1551 dividend equivalent rights (DERs) on 09/30/2025, which are recorded as the economic equivalent of common shares and vest with the underlying restricted stock units. The transaction shows a $0 price, consistent with dividend-equivalent accruals rather than a market purchase.

This is an administrative compensation event rather than an open-market trade and does not by itself change outstanding option positions or indicate sale activity.

Corporate Governance Analyst

Report discloses officer-level ownership and updated beneficial holdings.

The Form 4 confirms the reporting person’s role as SVP, Corporate Controller & CAO and updates beneficial ownership to 4,110.0776 shares/equivalents after the accrual. The filing was submitted by an attorney-in-fact and formally signed on 10/02/2025.

This update is a routine disclosure of compensation-related equity accruals and provides transparency about executive holdings; it does not show transfers or sales in this filing.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

Kulasa Matthew S

(Last) (First) (Middle)

225 W STATION SQUARE DRIVE

SUITE 700

(Street)

PITTSBURGH PA 15219

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
WESCO INTERNATIONAL INC [ WCC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP, Corp. Controller & CAO

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/30/2025		A		2.1551(1)	A	$0	4,110.0776	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents dividend equivalent rights ("DERs") in connection with the Issuer's quarterly dividend and accrued to the Reporting Person on restricted stock units ("RSUs") held by the Reporting Person. Each DER is the economic equivalent of one share of Issuer's common stock and vests on the same schedule as the underlying award.

	/s/ Michele Nelson, as Attorney-in-Fact	10/02/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did the WCC Form 4 filed by Matthew S. Kulasa report?

The Form 4 reports the acquisition of 2.1551 dividend equivalent rights (DERs) on 09/30/2025, increasing beneficial holdings to 4,110.0776 share equivalents.

Were any shares purchased for cash in this transaction (WCC)?

No. The filing shows a $0 price for the DERs, indicating these were credited as dividend equivalents rather than bought with cash.

What are the dividend equivalent rights (DERs) described in the Form 4?

The filing states each DER is the economic equivalent of one share of common stock and vests on the same schedule as the underlying restricted stock units.

When was the transaction and when was the Form 4 signed?

The transaction date is 09/30/2025 and the Form 4 bears a signature by an attorney-in-fact dated 10/02/2025.

What position does the reporting person hold at WCC?

The reporting person is listed as SVP, Corporate Controller & CAO and the filing indicates an officer relationship to the issuer.