Wesco Q3 2026 Earnings: 17% Sales Growth Drives Margin Expansion

Wesco International (NYSE: WCC) reported Q3 2026 net sales of $7.23 billion, up 16.6% year over year, while diluted EPS increased 43.3% to $5.43 for the quarter ended September 30. Adjusted EBITDA margin expanded by 100 basis points to 7.8%, and operating cash flow improved to $193.9 million from a use of $82.7 million. Data center sales grew about 55%, but growth extended across all three business segments and non-data-center sales rose 7%.

Core Financial Results

Reported and organic sales both grew 16.6%. Wesco attributed the increase to higher volumes in all three segments and favorable pricing, while acquisition and foreign-exchange effects largely offset each other. Compared with Q2 2026, reported sales increased 8.4% and organic sales rose 8.5%.

Profit increased faster than revenue. Gross margin improved by 40 basis points, while adjusted SG&A expenses declined to 14.4% of sales from 14.7%, showing better operating leverage despite higher compensation and digital transformation spending.

Gross profit, gross margin, adjusted EBITDA, adjusted diluted EPS, and free cash flow are company-defined non-GAAP measures.

Business and Segment Performance

Communications and Security Solutions delivered the fastest growth and the largest margin expansion. Electrical and Electronic Solutions also posted double-digit organic growth, while Utility and Broadband Solutions grew at a slower rate and maintained its adjusted EBITDA margin.

Data center sales reached $1.8 billion, up approximately 55%, making them a major contributor to consolidated growth. However, non-data-center sales also increased 7%, indicating that demand was not limited to a single end market.

Total company backlog increased approximately 80% to a record level, with each business unit reporting record backlog. Management attributed the increase partly to multi-year customer commitments and continued investment in large capital and infrastructure projects.

Profitability, Cash Flow, and the Balance Sheet

Higher sales, a better gross margin, and operating cost leverage drove the improvement in profitability. Reported SG&A expenses increased 15.1% to $1.06 billion, less than the rate of sales growth. The quarter included $24.8 million of digital transformation costs, compared with $10.4 million of digital transformation costs in the prior-year reconciliation.

The cash flow improvement was supported by working-capital timing as well as higher earnings. Accounts payable provided a $326.9 million year-over-year benefit, while changes in other liabilities contributed $227.3 million, primarily because of customer advance payments and milestone billings. These benefits were partly offset by inventory, receivables, and supplier prepayments associated with sales growth and large projects.

At September 30, cash and cash equivalents were $842.5 million, up from $604.8 million at the end of 2025. Trade receivables rose to $5.05 billion from $4.07 billion, while inventory increased to $4.69 billion from $4.01 billion. Long-term debt increased to $5.98 billion from $5.76 billion, but net debt was nearly unchanged at $5.22 billion because of the higher cash balance.

Financial leverage declined to 2.8 times from 3.4 times at the end of 2025. The improvement primarily reflects higher trailing adjusted EBITDA and increased cash rather than a material reduction in net debt.

Management Commentary

Chairman, President, and CEO John Engel said Wesco has now produced five consecutive quarters of double-digit sales growth. Management pointed to demand across the communications, security, electrical, utility, and power markets, as well as continued customer investment in major capital and infrastructure projects.

Management also linked backlog growth to multi-year customer commitments and said customers are increasingly using Wesco for services and supply-chain management. The company views its cross-selling strategy and broader service portfolio as contributors to growth beyond data centers.

Recent Insider Transactions

The supplied six-month insider data showed 182,635 shares purchased across 24 transactions and 148,156 shares sold across 12 transactions, resulting in net purchases of 34,479 shares. The following were the three most recent purchase or sale records provided; stock awards are excluded from the table.

These disclosures do not by themselves establish insiders’ views on Wesco’s future performance.

Risks Investors Should Watch

• Data center growth concentration: Data center sales grew about 55%, far faster than the 7% increase in non-data-center sales. A slowdown in this end market could reduce consolidated growth even though the rest of the portfolio is expanding.
• Working-capital requirements: Large projects increased inventory, receivables, and supplier prepayments. Quarterly cash generation also benefited from accounts-payable timing and customer advances, which can create volatility between periods.
• Backlog conversion and execution: Backlog increased roughly 80%, but converting large, multi-year commitments into revenue may require additional inventory and working capital before cash is collected.
• Costs and debt obligations: Compensation and digital transformation spending increased, while long-term debt remained near $6.0 billion. Continued margin expansion and cash generation are important for further leverage reduction.

Summary

Wesco’s Q3 2026 results combined broad-based sales growth with improved gross margin and operating leverage, allowing earnings to rise faster than revenue. Data centers were the largest growth driver, but all three segments reported organic growth and non-data-center demand remained positive. The main issues to monitor are backlog conversion, working-capital intensity, the durability of data center demand, and whether higher cash generation can translate into further leverage improvement.