WESCO International (WCC) director reports new DERs and DSUs on Form 4

Rhea-AI Filing Summary

WESCO International Inc. director reports routine stock-based accruals. A board member filed a Form 4 for transactions dated 12/31/2025 involving additional interests linked to WESCO common stock. The filing shows 11.8585 dividend equivalent rights, which track restricted stock units, and 127.739 deferred share units credited under the company’s deferred compensation plan for non-employee directors. After these transactions, the reporting person beneficially held 6,533.5857 common stock-related units directly. These awards are economic equivalents of WESCO common shares and follow the vesting or distribution schedules of the underlying programs.

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).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

NAGARAJAN SUNDARAM

(Last) (First) (Middle)

225 WEST STATION SQUARE DRIVE

SUITE 700

(Street)

PITTSBURGH PA 15219-1122

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
12/31/2025

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	12/31/2025		A		11.8585(1)	A	$0	6,405.8467	D
Common Stock	12/31/2025		A		127.739(2)	A	$244.64	6,533.5857	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.

2. Represents deferred share units ("DSUs") credited to the Reporting Person's deferred compensation account pursuant to the Issuer's Deferred Compensation Plan for Non-Employee Directors (the "Plan"). Each DSU is the economic equivalent of one share of Issuer's common stock and is eligible for distribution in the form of Issuer's common stock based on the schedule elected by the Reporting Person in accordance with the Plan.

	/s/ Michele Nelson, as Attorney-in-Fact	01/05/2026
	** 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).
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FAQ

What did WESCO International (WCC) disclose in this Form 4 filing?

The filing reports that a WESCO International director acquired additional stock-linked interests on 12/31/2025, including dividend equivalent rights and deferred share units tied to WESCO common stock.

How many WESCO-related units did the director hold after the reported transactions?

Following the reported activity, the director beneficially owned 6,533.5857 common stock-related units directly.

What are the dividend equivalent rights (DERs) reported for WESCO (WCC)?

The filing states that 11.8585 dividend equivalent rights accrued in connection with WESCO’s quarterly dividend on restricted stock units. Each DER is the economic equivalent of one share of WESCO common stock and vests on the same schedule as the underlying RSU award.

What are the deferred share units (DSUs) credited in this WESCO International Form 4?

The filing explains that 127.739 deferred share units were credited to the director’s deferred compensation account under WESCO’s Deferred Compensation Plan for Non-Employee Directors. Each DSU is the economic equivalent of one WESCO common share and can be distributed in WESCO stock based on the schedule elected by the director under the plan.

Was this WESCO (WCC) Form 4 filed for a single reporting person?

Yes. The document indicates that the Form 4 was filed by one reporting person, who serves as a director of WESCO International Inc.

Did the WESCO director directly or indirectly hold the reported securities?

The table shows the reported common stock-related holdings as direct (D) ownership by the director.