WESCO EVP receives dividend-equivalent share award

WESCO International executive Daniel J. Castillo received an equity-based compensation award linked to existing restricted stock units.

Rhea-AI Filing Summary

WESCO International executive Daniel J. Castillo received an equity-based compensation award linked to existing restricted stock units. He acquired 20.1562 shares of common stock in the form of dividend equivalent rights, which carry the same economic value as common shares and vest on the same schedule as the underlying RSUs. Following this grant, his directly held common stock position reported in this filing increased to 15,345.3155 shares. This is a routine, non-cash award rather than an open-market purchase or sale.

Insider Trade Summary

Grant/Award: 20.1562 shares

Grant/Award 1 txn

Insider Castillo Daniel J

Role EVP & GM, EES

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	20.1562	$0.00	$0.00

Holdings After Transaction: Common Stock — 15,345.3155 shares (Direct)

Footnotes (1)

1. F1. 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.

Key Figures

Shares acquired (DERs): 20.1562 shares Price per share: $0.0000 Total shares after transaction: 15,345.3155 shares

3 metrics

Shares acquired (DERs) 20.1562 shares Dividend equivalent rights credited on RSUs on June 30, 2026

Price per share $0.0000 Grant of dividend equivalent rights, non-cash award

Total shares after transaction 15,345.3155 shares Direct common stock holdings following the Form 4 acquisition

Key Terms

dividend equivalent rights ("DERs"), restricted stock units ("RSUs"), economic equivalent of one share

3 terms

dividend equivalent rights ("DERs") financial

"Represents dividend equivalent rights ("DERs") in connection with the Issuer's quarterly dividend"

restricted stock units ("RSUs") financial

"accrued to the Reporting Person on restricted stock units ("RSUs") held by the Reporting Person"

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

economic equivalent of one share financial

"Each DER is the economic equivalent of one share of Issuer's common stock"

FAQ

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

What insider transaction did WESCO (WCC) executive Daniel J. Castillo report?

Daniel J. Castillo reported an acquisition of 20.1562 shares of WESCO common stock as a grant of dividend equivalent rights tied to his restricted stock units, a routine equity compensation adjustment rather than an open-market stock purchase.

Was the WESCO (WCC) insider transaction by Daniel J. Castillo a stock purchase or sale?

The transaction was not a market purchase or sale. It was an acquisition coded as a grant, representing dividend equivalent rights credited on existing restricted stock units rather than shares bought or sold in the open market.

How many WESCO (WCC) shares does Daniel J. Castillo hold after this Form 4 transaction?

After this Form 4 transaction, Daniel J. Castillo directly held 15,345.3155 shares of WESCO common stock, reflecting the addition of 20.1562 dividend equivalent right shares credited on his outstanding restricted stock units.

What are dividend equivalent rights (DERs) in the WESCO (WCC) Form 4 filing?

Dividend equivalent rights are credits that mirror cash dividends on restricted stock units. Each DER in this filing is economically equivalent to one share of WESCO common stock and vests on the same schedule as the related RSU award.

How is the Daniel J. Castillo WESCO (WCC) Form 4 transaction classified by the SEC code?

The transaction is classified under SEC code "A" for grant, award, or other acquisition. It reflects an equity compensation-related credit of dividend equivalent rights, not a discretionary open-market trade in WESCO shares.

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

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Accepted by SEC EDGAR 07/02/2026 - 04:23 PM Learn about SEC filing dates

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^*

Castillo Daniel J

(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 & GM, EES

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/30/2026

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	06/30/2026		A		20.1562(1)	A	$0	15,345.3155	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.

	/s/ Michele Nelson, as Attorney-in-Fact	07/02/2026
	** 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)