[Form 4] Wesco International Inc. Insider Trading Activity

Rhea-AI Filing Summary

Wesco International Inc. (WCC) reporting person David S. Schulz, EVP & CFO, reported multiple transactions on 08/26/2025–08/27/2025. He exercised 27,507 Stock Appreciation Rights at an exercise price of $48.32, resulting in acquisition of 27,507 common shares. Following that acquisition his reported beneficial ownership rose to 137,883.2917 shares. On 08/26–08/27/2025 he disposed of a series of common shares in several transactions: 5,869 shares, 9,411 shares, 9,389 shares, 2,738 shares and 100 shares at weighted average sale prices in the $224.38–$226.63 range, reducing his reported holdings to 110,376.2917 shares.

Positive

• Exercise of SARs resulted in acquisition of 27,507 common shares at an exercise price of $48.32
• Reported beneficial ownership remained substantial at 110,376.2917 shares after transactions

Negative

• Substantial disposals totaling 27,507 common shares across 08/26–08/27/2025 at weighted average prices in the $224–$226 range
• No disclosure of percentage ownership or context about total outstanding shares, limiting assessment of materiality

Insights

Financial Analyst

TL;DR: Insider exercised SARs and sold portions of holdings in multiple transactions, leaving substantial net ownership.

The reporting shows an exercise of 27,507 Stock Appreciation Rights at an exercise price of $48.32, which produced an equal number of common shares. Concurrently, Schulz executed multiple sales totaling 27,507 common shares across 08/26–08/27/2025 at weighted average prices around $224–$226, bringing reported beneficial ownership to 110,376.2917 shares. The pattern—exercise followed by systematic sales—appears consistent with exercising compensation awards and monetizing a portion of the resulting shares rather than an isolated large block sale. Transactions are sizeable in absolute terms but the form contains no context on percentage ownership or insider's overall stake relative to outstanding shares.

Corporate Governance Expert

TL;DR: Transactions comply with disclosure norms; exercise vesting schedule is disclosed.

The filing discloses the exercisability schedule for the Stock Appreciation Rights, noting three equal annual installments from the 02/13/2020 grant date, and provides weighted average sale price ranges for the disposals. The report is properly signed by an attorney-in-fact and identifies the reporting person as EVP & CFO. There is no indication of Rule 10b5-1 plan reliance or any amendment to prior filings in this document.

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

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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^*

Schulz David S.

(Last) (First) (Middle)

225 WEST 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)
	EVP & CFO

3. Date of Earliest Transaction (Month/Day/Year)
08/26/2025

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	08/26/2025		M		27,507	A	$48.32	137,883.2917	D
Common Stock	08/26/2025		D		5,869	D	$226.49	132,014.2917	D
Common Stock	08/26/2025		F		9,411	D	$226.49	122,603.2917	D
Common Stock	08/27/2025		S		9,389	D	$224.98(1)	113,214.2917	D
Common Stock	08/27/2025		S		2,738	D	$225.78(2)	110,476.2917	D
Common Stock	08/27/2025		S		100	D	$226.63	110,376.2917	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 Appreciation Rights	$48.32	08/26/2025		M			27,507	(3)	02/13/2030	Common Stock	27,507	$0	0	D

Explanation of Responses:

1. Represents weighted average sale price. These shares were sold in multiple transactions at prices ranging from $224.38 to $225.34. Upon request by the SEC, the Issuer or a stockholder of the Issuer, complete information regarding the number of shares sold at each price within the range will be provided.

2. Represents weighted average sale price. These shares were sold in multiple transactions at prices ranging from $225.42 to $226.37. Upon request by the SEC, the Issuer or a stockholder of the Issuer, complete information regarding the number of shares sold at each price within the range will be provided.

3. The Stock Appreciation Rights became exercisable in three (3) equal, annual installments beginning on the first anniversary of the February 13, 2020 grant date.

	/s/ Michele Nelson, as Attorney-in-Fact	08/28/2025
	** 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).
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FAQ

What did WCC insider David S. Schulz do on 08/26–08/27/2025?

He exercised 27,507 Stock Appreciation Rights at $48.32 and reported multiple sales totaling 27,507 common shares at weighted average prices around $224–$226.

How many shares did Schulz own after these transactions?

The filing reports 110,376.2917 beneficially owned shares following the transactions.

Were the stock appreciation rights fully vested?

The filing states the SARs became exercisable in three equal annual installments beginning on the first anniversary of the 02/13/2020 grant date.

Did the Form 4 indicate a 10b5-1 trading plan?

No. The filing does not check or state that the transactions were made pursuant to a Rule 10b5-1 plan.

Are the sale prices exact for each transaction?

The filing provides weighted average sale price ranges for some sales and says complete per-price share counts will be provided upon SEC or shareholder request.