WESCO International Inc
Ownership
Ownership Structure
Who owns WESCO International Inc (WCC)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 98.3% of the shares are freely tradable; institutional investors hold 103.9%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 18.38 | 8,958,787 | -4.6 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.52 | 2,200,573 | +0.6 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 4.25 | 2,072,241 | -0.1 | 06/30/2026 |
| Wellington Management Company LLP | 4.14 | 2,018,251 | -43.9 | 06/30/2026 |
| Dimensional Fund Advisors, Inc. | 4.13 | 2,013,677 | -9.8 | 06/30/2026 |
| State Street Corp | 3.11 | 1,515,816 | +3.5 | 06/30/2026 |
| Amvescap Plc. | 1.99 | 971,590 | -35.6 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Mid-Cap ETF | 3.56 | 1,735,876 | +0.0 | 09/30/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.18 | 1,550,040 | +0.1 | 09/30/2026 |
| Vanguard Small Cap Index | 2.25 | 1,096,865 | -2.1 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Engel John | Chairman, President & CEO | 479,007 | 164,347,397 $ | Sep 30, 2026 | direct |
| Cameron James | EVP & GM, Util & Broadband | 46,499 | 15,953,642 $ | Sep 30, 2026 | direct |
| Singleton James Louis | Director | 37,700 | 12,934,753 $ | Sep 30, 2026 | direct |
| Khurana Akash | EVP, Chief Info & Digital Off. | 27,431 | 9,411,607 $ | Sep 30, 2026 | direct |
| Espe Matthew J | Director | 21,432 | 7,353,271 $ | Sep 30, 2026 | direct |
| Lazzaris Diane | EVP and General Counsel | 19,620 | 6,731,459 $ | Sep 30, 2026 | direct |
| Dev Indraneel | EVP & CFO | 16,896 | 5,796,873 $ | Sep 30, 2026 | direct |
| Porwal Hemant | EVP Supply Chain & Operations | 16,624 | 5,703,605 $ | Sep 30, 2026 | direct |
| Sundaram Easwaran | Director | 14,767 | 5,066,717 $ | Sep 30, 2026 | direct |
| Castillo Daniel J | EVP & GM, EES | 14,701 | 5,043,907 $ | Sep 30, 2026 | direct |
| Thompson Laura K | Director | 10,722 | 3,678,810 $ | Sep 30, 2026 | direct |
| Naylor Dirk Waugh | EVP & GM, Comm & Sec Solutions | 8,693 | 2,982,594 $ | Sep 30, 2026 | direct |
| Nagarajan Sundaram | Director | 7,299 | 2,504,246 $ | Sep 30, 2026 | direct |
| Cooney Anne M | Director | 6,355 | 2,180,387 $ | Sep 30, 2026 | direct |
| Bryan Glynis | Director | 4,131 | 1,417,384 $ | Sep 30, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 30, 2026 | Sundaram Easwaran | Director | Other | 87 | 359.57 | 31,283 |
| Sep 30, 2026 | Sundaram Easwaran | Director | Other | 20 | 0.00 | – |
| Sep 30, 2026 | Wajsgras David C | Director | Other | 87 | 359.57 | 31,283 |
| Sep 30, 2026 | Wajsgras David C | Director | Other | 1 | 0.00 | – |
| Sep 30, 2026 | Porwal Hemant | EVP Supply Chain & Operations | Other | 3 | 0.00 | – |
| Sep 30, 2026 | Kulasa Matthew S | SVP, Corp. Controller & CAO | Other | 1 | 0.00 | – |
| Sep 30, 2026 | Carter Michael Lonon | Director | Other | 1 | 0.00 | – |
| Sep 30, 2026 | Khurana Akash | EVP, Chief Info & Digital Off. | Other | 27 | 0.00 | – |
| Sep 30, 2026 | Cooney Anne M | Director | Other | 27 | 359.57 | 9,708 |
| Sep 30, 2026 | Cooney Anne M | Director | Other | 5 | 0.00 | – |
| Sep 30, 2026 | Naylor Dirk Waugh | EVP & GM, Comm & Sec Solutions | Other | 10 | 0.00 | – |
| Sep 30, 2026 | Espe Matthew J | Director | Other | 17 | 0.00 | – |
| Sep 30, 2026 | Castillo Daniel J | EVP & GM, EES | Other | 14 | 0.00 | – |
| Sep 30, 2026 | Nagarajan Sundaram | Director | Other | 22 | 359.57 | 7,911 |
| Sep 30, 2026 | Nagarajan Sundaram | Director | Other | 10 | 0.00 | – |
| Sep 30, 2026 | Singleton James Louis | Director | Other | 27 | 0.00 | – |
| Sep 30, 2026 | Cameron James | EVP & GM, Util & Broadband | Other | 29 | 0.00 | – |
| Sep 30, 2026 | Bryan Glynis | Director | Other | 6 | 0.00 | – |
| Sep 30, 2026 | Thompson Laura K | Director | Other | 2 | 0.00 | – |
| Sep 30, 2026 | Lazzaris Diane | EVP and General Counsel | Other | 4 | 0.00 | – |
| Sep 30, 2026 | Marino Anthony S | EVP & CHRO | Other | 1 | 0.00 | – |
| Sep 30, 2026 | Dev Indraneel | EVP & CFO | Other | 23 | 0.00 | – |
| Sep 30, 2026 | Engel John | Chairman, President & CEO | Other | 30 | 0.00 | – |
| Sep 11, 2026 | Castillo Daniel J | EVP & GM, EES | Other | 1,618 | 356.32 | 576,526 |
| Aug 17, 2026 | Khurana Akash | EVP, Chief Info & Digital Off. | Sell | 360 | 368.27 | 132,577 |
| Aug 17, 2026 | Khurana Akash | EVP, Chief Info & Digital Off. | Sell | 1,480 | 367.13 | 543,352 |
| Aug 17, 2026 | Khurana Akash | EVP, Chief Info & Digital Off. | Sell | 1,560 | 366.10 | 571,116 |
| Aug 12, 2026 | Thompson Laura K | Director | Sell | 270 | 368.45 | 99,482 |
| Aug 4, 2026 | Castillo Daniel J | EVP & GM, EES | Buy | 960 | 365.89 | 351,254 |
| Jul 23, 2026 | Marino Anthony S | EVP & CHRO | Other | 1,021 | 0.00 | – |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: October 30, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.