WESCO (WCC) EVP and General Counsel sells 9,910 common shares

Q: What insider transaction did WESCO (WCC) report for Diane Lazzaris?

WESCO reported that EVP and General Counsel Diane Lazzaris sold 9,910 shares of common stock in open-market transactions. The trades occurred on May 6, 2026 at weighted average prices between roughly $358.87 and $360.69 per share.

Q: At what prices did Diane Lazzaris sell WESCO (WCC) shares?

The Form 4 shows three weighted average sale prices: about $358.87 , $360.02 , and $360.68 per share. Footnotes explain each represents multiple trades within price ranges from $358.50 up to $360.69 per share.

Q: Were Diane Lazzaris’s WESCO (WCC) sales open-market transactions?

Yes. Each transaction on the Form 4 is coded “S” and described as an open-market sale or private transaction. The filing notes that the reported prices are weighted averages for multiple trades executed within specified price ranges.

Q: Did the WESCO (WCC) Form 4 indicate any option exercises or derivative trades?

No. The transactions disclosed are all non-derivative sales of common stock. The derivative position summary is empty, and the transaction codes are “S” , indicating sales rather than option exercises, conversions, or other derivative-related activity.

Filing Impact

(Very High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

WESCO International EVP and General Counsel Diane Lazzaris sold common stock in multiple open-market transactions. On May 6, 2026, she sold a total of 9,910 shares of WESCO common stock at weighted average prices ranging from about $358.87 to $360.69 per share. Following these sales, she directly holds about 19,611 shares of WESCO common stock. The sales were executed in multiple trades within stated price ranges, with weighted average prices disclosed for each block.

Insider Trade Summary

Net Seller: 9,910 shares ($3,562,469)

Net Sell 3 txns

Insider Lazzaris Diane

Role EVP and General Counsel

Sold 9,910 shs ($3.56M)

Type	Security	Shares	Price	Value
Sale	Common Stock	4,726	$358.87	$1.70M
Sale	Common Stock	5,024	$360.02	$1.81M
Sale	Common Stock	160	$360.68	$58K

Holdings After Transaction: Common Stock — 24,794.998 shares (Direct, null)

Footnotes (1)

Represents weighted average sale price. These shares were sold in multiple transactions at prices ranging from $358.50 - $359.49. Upon request by the SEC, the Issuer or a stockholder of the Issuer, complete information regarding the number of shares sold at each price within the range will be provided. Represents weighted average sale price. These shares were sold in multiple transactions at prices ranging from $359.52 - $360.50. Upon request by the SEC, the Issuer or a stockholder of the Issuer, complete information regarding the number of shares sold at each price within the range will be provided. Represents weighted average sale price. These shares were sold in multiple transactions at prices ranging from $360.65 - $360.69. Upon request by the SEC, the Issuer or a stockholder of the Issuer, complete information regarding the number of shares sold at each price within the range will be provided.

Key Figures

Total shares sold: 9,910 shares Sale block 1: 4,726 shares at $358.87/share Sale block 2: 5,024 shares at $360.02/share +2 more

5 metrics

Total shares sold 9,910 shares Open-market sales of common stock on May 6, 2026

Sale block 1 4,726 shares at $358.87/share Weighted average price; multiple trades $358.50–$359.49

Sale block 2 5,024 shares at $360.02/share Weighted average price; multiple trades $359.52–$360.50

Sale block 3 160 shares at $360.68/share Weighted average price; trades $360.65–$360.69

Shares held after transactions 19,610.9979 shares Direct ownership following May 6, 2026 sales

Key Terms

open-market sale, weighted average sale price, non-derivative, Form 4

4 terms

open-market sale financial

"transaction_action is described as "open-market sale" for each entry"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

weighted average sale price financial

"Footnotes state "Represents weighted average sale price" for each block"

non-derivative financial

"Each transaction lists transaction_type as "non-derivative""

Form 4 regulatory

"INSIDER FILING DATA (Form 4) heading indicates filing type"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Form 4 Insider Transactions: What Each Field Means →

05/07/2026 - 06:41 PM

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^*

Lazzaris Diane

(Last)

(First)

(Middle)

225 WEST STATION SQUARE DRIVE

SUITE 700

(Street)

PITTSBURGH

PENNSYLVANIA

15219

(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 and General Counsel

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/06/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/06/2026		S		4,726	D	$358.87⁽¹⁾	24,794.9979	D
Common Stock	05/06/2026		S		5,024	D	$360.02⁽²⁾	19,770.9979	D
Common Stock	05/06/2026		S		160	D	$360.68⁽³⁾	19,610.9979	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Represents weighted average sale price. These shares were sold in multiple transactions at prices ranging from $358.50 - $359.49. Upon request by the SEC, the Issuer or a stockholder of the Issuer, complete information regarding the number of shares sold at each price within the range will be provided.

2. Represents weighted average sale price. These shares were sold in multiple transactions at prices ranging from $359.52 - $360.50. Upon request by the SEC, the Issuer or a stockholder of the Issuer, complete information regarding the number of shares sold at each price within the range will be provided.

3. Represents weighted average sale price. These shares were sold in multiple transactions at prices ranging from $360.65 - $360.69. Upon request by the SEC, the Issuer or a stockholder of the Issuer, complete information regarding the number of shares sold at each price within the range will be provided.

	/s/ Michele Nelson, as Attorney-in-Fact	05/07/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did WESCO (WCC) report for Diane Lazzaris?

WESCO reported that EVP and General Counsel Diane Lazzaris sold 9,910 shares of common stock in open-market transactions. The trades occurred on May 6, 2026 at weighted average prices between roughly $358.87 and $360.69 per share.

At what prices did Diane Lazzaris sell WESCO (WCC) shares?

The Form 4 shows three weighted average sale prices: about $358.87, $360.02, and $360.68 per share. Footnotes explain each represents multiple trades within price ranges from $358.50 up to $360.69 per share.

How many WESCO (WCC) shares does Diane Lazzaris hold after these sales?

After the reported sales, Diane Lazzaris directly holds approximately 19,610.9979 shares of WESCO common stock. This post-transaction holding reflects her remaining direct ownership following the disposition of 9,910 shares on May 6, 2026.

Were Diane Lazzaris’s WESCO (WCC) sales open-market transactions?

Yes. Each transaction on the Form 4 is coded “S” and described as an open-market sale or private transaction. The filing notes that the reported prices are weighted averages for multiple trades executed within specified price ranges.

Did the WESCO (WCC) Form 4 indicate any option exercises or derivative trades?

No. The transactions disclosed are all non-derivative sales of common stock. The derivative position summary is empty, and the transaction codes are “S”, indicating sales rather than option exercises, conversions, or other derivative-related activity.