Daniel J. Castillo - 31 Mar 2026 Form 4 Insider Report for WESCO INTERNATIONAL INC (WCC)

Reporting relationship: EVP & GM, EES
Issuer ticker: WCC
Reported as of: 31 Mar 2026
Net transaction value: +$372,484
SEC form: 4
Accepted by SEC: 02 Apr 2026, 17:21:45 UTC
Prior SEC filing: 03 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Michele Nelson, as Attorney-in-Fact

Key filing fact

Daniel J. Castillo filed Form 4 for WESCO INTERNATIONAL INC (WCC) on 02 Apr 2026.

Key facts

This page summarizes Daniel J. Castillo's Form 4 filing for WESCO INTERNATIONAL INC (WCC).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 02 Apr 2026, 17:21.

Change

Previous filing in this sequence was filed on 03 Mar 2026.
Current net transaction value: +$372,484.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001535412 Primary reporting owner

Castillo Daniel J

Relationship: EVP & GM, EES
Address: 225 WEST STATION SQUARE DRIVE, SUITE 700, PITTSBURGH
Signature: /s/ Michele Nelson, as Attorney-in-Fact
Signature date: 02 Apr 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

WCC transaction

Common Stock

Purchase

Transaction value: $372,484
Shares: +1,400
Change %: +10%
Price: $266.06
Shares after: 15,300
Date: 31 Mar 2026
Ownership: Direct

WCC transaction

Common Stock

Award

Transaction value
Shares: +25
Change %: +0.16%
Price: $0.000000^*
Shares after: 15,325
Date: 31 Mar 2026
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

WCC transaction Derivative

Stock Options (Right to Buy)

Award

Transaction value
Shares: +1,400
Change %
Price: $0.000000^*
Shares after: 1,400
Date: 31 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,400
Exercise price: $273.62
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote 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.

Footnote F2

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