WESCO executive Anthony S. Marino buys 341 shares

The 341 options become exercisable in three equal annual installments beginning on the first anniversary of the grant date.

Available on EDGAR 11/09/2026 - 05:08 PM EST Accepted by SEC EDGAR 11/09/2026 - 05:07 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

WESCO International Inc. EVP & CHRO Anthony S. Marino purchased 341 shares of common stock at $292.97 per share on November 6, 2026; his directly held common-stock position after the purchase was 1,363 shares. No Rule 10b5-1 plan is reported. He also received 341 stock options with a $292.68 exercise price.

Insider Trade Summary

Net Buyer: 341 shares

Net Buy 2 txns

Insider Marino Anthony S

Role EVP & CHRO

Bought 341 shs ($100K)

Increase in Position 33.4%

Type	Security	Shares	Price	Value
Grant/Award	Stock Options (Right to Buy) F1	341	$0.00	$0.00
Purchase	Common Stock	341	$292.97	$100K

Holdings After Transaction: Stock Options (Right to Buy) — 341 options (Direct); Common Stock — 1,363.4198 shares (Direct)

Holdings Before and After: Stock Options (Right to Buy), 0 to 341 options (Direct); Common Stock, 1,022.4198 to 1,363.4198 shares (Direct)

Other Insiders: 1 other insider reported open-market purchases of this stock in the 30 days up to this filing.

Footnotes (1)

1. F1. The stock options become exercisable in three equal annual installments beginning on the first anniversary of the date of grant.

Key Figures

Common shares purchased: 341 shares Purchase price: $292.97 per share Direct common shares after purchase: 1,363 shares +3 more

6 metrics

Common shares purchased 341 shares November 6, 2026

Purchase price $292.97 per share November 6, 2026

Direct common shares after purchase 1,363 shares Following the November 6, 2026 purchase

Stock options awarded 341 options Granted November 6, 2026

Exercise price $292.68 per share Stock options granted November 6, 2026

Option expiration November 6, 2036 Stock options granted November 6, 2026

Key Terms

Stock Options (Right to Buy), annual installments, first anniversary

3 terms

Stock Options (Right to Buy) financial

"Stock Options (Right to Buy)"

annual installments financial

"The stock options become exercisable in three equal annual installments"

first anniversary financial

"beginning on the first anniversary of the date of grant"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many WCC shares did Anthony S. Marino buy?

Anthony S. Marino purchased 341 WESCO International Inc. common shares at $292.97 per share on November 6, 2026, and his directly held position afterward was 1,363 shares. No Rule 10b5-1 plan is reported.

What options did WCC's EVP & CHRO receive?

Anthony S. Marino received 341 stock options with a $292.68 exercise price. They become exercisable in three equal annual installments beginning on the first anniversary of the grant date and expire November 6, 2036.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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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
Estimated average burden
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^*

Marino Anthony S

(Last) (First) (Middle)

225 WEST STATION SQUARE DRIVE

SUITE 700

(Street)

PITTSBURGH PENNSYLVANIA 15219-1122

(City) (State) (Zip)

UNITED STATES

(Country)

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 & CHRO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
11/06/2026

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

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

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

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	11/06/2026		P		341	A	$292.97	1,363.4198	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)	$292.68	11/06/2026		A		341		(1)	11/06/2036	Common Stock	341	$0	341	D

Explanation of Responses:

1. 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	11/09/2026
	** 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.
* Form 4: SEC 1474 (03-26)