WESCO International insider files Form 3

Anthony S. Marino, executive vice president and chief human resources officer (EVP & CHRO) of WESCO International Inc. (WCC), is identified as a reporting person in an insider Form 3 filing.

Rhea-AI Filing Summary

Anthony S. Marino, executive vice president and chief human resources officer (EVP & CHRO) of WESCO International Inc. (WCC), is identified as a reporting person in an insider Form 3 filing. The data show no reported insider share purchases, sales, option exercises, or other equity transactions. No share or derivative holdings are listed in the summarized fields.

Key Terms

Rule 10b5-1, beneficial ownership limits, derivative positions

3 terms

Rule 10b5-1 regulatory

"Footnotes may reference Rule 10b5-1 trading plans or pre-arranged trading arrangements"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

beneficial ownership limits financial

"beneficial ownership limits (for example 4.99%, 9.99%) if present"

Beneficial ownership limits are rules or thresholds that cap how much of a company’s shares a single person or related group can control or claim economic benefit from, even if the shares are held indirectly. They matter to investors because limits affect who can influence company decisions, trigger public disclosure or regulatory reviews, and change the supply of shares available to trade—similar to speed limits that keep traffic flowing and prevent any one driver from taking over the road.

derivative positions financial

"derivativeSummary contains remaining derivative positions (unexercised options, warrants)"

Derivative positions are contracts that derive their value from an underlying asset—such as a stock, bond, currency or commodity—and include instruments like options, futures and swaps. Think of them as bets or insurance tied to an asset’s future price: they let investors amplify returns, hedge risk or take exposure without owning the asset directly, which can meaningfully increase potential gains, losses and volatility in a portfolio.

FAQ

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

What does the WESCO International (WCC) Form 3 filing show about Anthony S. Marino?

The Form 3 data shows that Anthony S. Marino is an officer of WESCO International Inc., serving as EVP & CHRO. It lists no insider purchases, sales, option exercises, or other equity transactions in the summarized fields for this reporting person.

Are there any insider share purchases or sales for WESCO (WCC) in this Form 3?

No. The Form 3 summary for WESCO International (WCC) reports zero insider buy and sell transactions for Anthony S. Marino. All transaction counters, including purchases, sales, exercises, gifts, and restructurings, are shown as 0 in the transaction summary data.

What is Anthony S. Marino’s position at WESCO International (WCC) as reported here?

Anthony S. Marino is reported as an officer of WESCO International Inc. with the title EVP & CHRO (executive vice president and chief human resources officer). He is not listed as a director or 10% owner in the structured data fields.

Does this WESCO (WCC) Form 3 include any derivative option exercises or holdings?

The data show no derivative transactions or remaining derivative positions for Anthony S. Marino. Derivative transaction counts and exercise-share counts are all zero, and the derivative summary is empty, indicating no options or similar instruments reported in this Form 3 snapshot.

Is there any indication of a Rule 10b5-1 trading plan in WESCO’s (WCC) Form 3 data?

The Form 3 data include a field for a Rule 10b5-1 trading plan checkbox, which appears as null here, meaning no plan status is indicated in this dataset. No footnotes describe any trading plan for Anthony S. Marino.

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

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Accepted by SEC EDGAR 07/24/2026 - 04:21 PM EDT Learn about SEC filing dates

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
Estimated average burden
hours per response:			0.5

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. Date of Event Requiring Statement (Month/Day/Year)
07/20/2026

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

3a. Foreign Trading Symbol

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

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

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

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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

No securities are beneficially owned.

	/s/ Michele Nelson, as Attorney-in-Fact	07/24/2026
	** 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 5 (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 3: SEC 1473 (03-26)