Daniel J. Castillo - 04 Aug 2026 Form 4 Insider Report for WESCO INTERNATIONAL INC (WCC)

Reporting relationship: EVP & GM, EES
Issuer ticker: WCC
Reported as of: 04 Aug 2026
Net transaction value: +$351,254
SEC form: 4
Accepted by SEC: 05 Aug 2026, 17:53:18 UTC
Prior SEC filing: 02 Jul 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 05 Aug 2026.

Key facts

This page summarizes Daniel J. Castillo's Form 4 filing for WESCO INTERNATIONAL INC (WCC).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 05 Aug 2026, 17:53.

Change

Previous filing in this sequence was filed on 02 Jul 2026.
Current net transaction value: +$351,254.

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: 05 Aug 2026

Reported non-derivative transactions

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

WCC transaction

Common Stock

Purchase

Transaction value: $351,254
Shares: +960
Change %: +6.3%
Price: $365.89
Shares after: 16,305
Date: 04 Aug 2026
Ownership: Direct

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: +914
Change %
Price: $0.000000^*
Shares after: 914
Date: 04 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 914
Exercise price: $374.10
Footnotes: F1

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

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

We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. to update or revoke optional consent for future visits. For more information, see our Privacy Policy .