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 | 19.27 | 9,390,627 | +17.1 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.49 | 2,187,476 | +0.0 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 4.26 | 2,073,992 | +0.0 | 03/31/2026 |
| 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 |
| Amvescap Plc. | 3.10 | 1,509,549 | +9.1 | 03/31/2026 |
| State Street Corp | 3.01 | 1,465,249 | +1.4 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Mid-Cap ETF | 3.50 | 1,705,421 | +0.0 | 08/31/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.18 | 1,550,200 | +0.3 | 07/31/2026 |
| Vanguard Small Cap Index | 2.30 | 1,119,494 | +0.2 | 07/31/2026 |
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 |
|---|---|---|---|---|---|
| Khurana Akash | EVP, Chief Info & Digital Off. | 27,404 | 9,298,054 $ | Aug 17, 2026 | direct |
| Castillo Daniel J | EVP & GM, EES | 14,687 | 4,983,403 $ | Sep 11, 2026 | direct |
| Thompson Laura K | Director | 10,720 | 3,637,258 $ | Aug 12, 2026 | direct |
| Marino Anthony S | EVP & CHRO | 1,021 | 346,425 $ | Jul 23, 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 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: September 17, 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.