WESCO (WCC) SVP granted stock options and RSUs as shares withheld for tax

Rhea-AI Filing Summary

WESCO International senior vice president and chief accounting officer Matthew S. Kulasa reported equity compensation and related tax withholding. On March 2, 2026, he received 755 stock options and a grant of 317 shares of common stock as restricted stock units, both at a stated price of $0.00 per share. The RSUs each represent the right to receive one share of common stock and vest in three equal installments beginning on the first anniversary of the grant date, and the stock options become exercisable in three equal annual installments beginning on the first anniversary of the grant date. On March 1, 2026, 160.6306 shares of common stock were disposed of at $289.50 per share to cover tax withholding on the vesting of RSUs granted on March 1, 2024 and March 1, 2025, leaving 3,857.9373 shares of common stock held directly afterward.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider Kulasa Matthew S

Role SVP, Corp. Controller & CAO

Type	Security	Shares	Price	Value
Grant/Award	Stock Options (Right to Buy)	755	$0.00	--
Grant/Award	Common Stock	317	$0.00	--
Tax Withholding	Common Stock	160.631	$289.50	$47K

Holdings After Transaction: Stock Options (Right to Buy) — 755 shares (Direct); Common Stock — 4,174.937 shares (Direct)

Footnotes (1)

1. Represents tax withholding on the vesting of restricted stock units ("RSU") that were granted on 03/01/2024 and 03/01/2025. Represents a grant of RSUs. Each RSU represents a contingent right to acquire one share of Issuer's common stock. The RSUs vest in three equal installments beginning on the first anniversary of the date of grant. The stock options become exercisable in three equal annual installments beginning on the first anniversary of the date of grant.

Form 4 Insider Transactions: What Each Field Means →

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

OMB APPROVAL

OMB Number:			3235-0287
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hours per response:			0.5

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^*

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)
03/01/2026

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	03/01/2026		F		160.6306(1)	D	$289.5	3,857.9373	D
Common Stock	03/02/2026		A		317(2)	A	$0	4,174.9373	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
Stock Options (Right to Buy)	$295.84	03/02/2026		A		755		(3)	03/02/2036	Common Stock	755	$0	755	D

Explanation of Responses:

1. Represents tax withholding on the vesting of restricted stock units ("RSU") that were granted on 03/01/2024 and 03/01/2025.

2. Represents a grant of RSUs. Each RSU represents a contingent right to acquire one share of Issuer's common stock. The RSUs vest in three equal installments beginning on the first anniversary of the date of grant.

3. The stock options become exercisable in three equal annual installments beginning on the first anniversary of the date of grant.

	/s/ Michele Nelson, as Attorney-in-Fact	03/03/2026
	** 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).
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 insider transactions did WESCO (WCC) executive Matthew Kulasa report?

Matthew S. Kulasa reported equity awards and related tax withholding. He was granted 755 stock options and 317 RSU-based common shares, and 160.6306 shares were withheld at $289.50 per share to satisfy taxes on previously granted RSUs.

Were the WESCO (WCC) insider transactions open-market purchases or sales?

The reported activity reflects equity awards and tax withholding, not open-market trades. Options and RSUs were granted at a stated price of $0.00 per share, while 160.6306 shares were disposed of solely to cover tax obligations on vesting RSUs.

How many WESCO (WCC) stock options were granted to Matthew Kulasa?

He received a grant of 755 stock options. According to the disclosure, these options become exercisable in three equal annual installments beginning on the first anniversary of the grant date, creating a multi-year vesting schedule tied to continued service.

What RSU awards did the WESCO (WCC) executive receive in this filing?

He received 317 shares of common stock in the form of restricted stock units. Each RSU represents a contingent right to one share and vests in three equal installments starting on the first anniversary of the grant date, spreading the benefit over several years.

Why were 160.6306 WESCO (WCC) shares disposed of at $289.50?

The 160.6306 shares were withheld to cover taxes on vesting RSUs granted on March 1, 2024 and March 1, 2025. This tax-withholding disposition, coded "F," is a common administrative method rather than an open-market sale for investment reasons.

What is Matthew Kulasa’s WESCO (WCC) shareholding after these transactions?

After the March 1, 2026 tax-withholding disposition, he directly held 3,857.9373 shares of WESCO common stock. Following the March 2, 2026 RSU grant, his direct common stock balance was reported as 4,174.9373 shares, excluding unexercised options and unvested RSUs.