Fastenal Q3 2026 Earnings: SG&A Leverage Lifts Operating Margin

Fastenal (Nasdaq: FAST) reported Q3 2026 net sales of $2,463.3 million, up 15.5% year over year, while diluted EPS rose 19.8% to $0.35 from $0.29. For the quarter ended September 30, 2026, net income increased 19.7% and operating margin reached 21.5%, as SG&A leverage more than offset gross-margin pressure from the shift toward larger customers.

Core Earnings Data

Sales growth reflected customer contract wins secured since the first quarter of 2024, pricing actions and modest improvement in industrial production. Pricing contributed approximately 240 basis points to sales growth, while foreign exchange reduced growth by about 10 basis points.

Gross margin narrowed to 44.8% from 45.3%, but SG&A declined to 23.3% of sales from 24.6%. That operating expense leverage allowed operating income to grow faster than revenue and lifted operating margin despite the weaker gross-margin rate.

The company calculates basis-point changes using unrounded figures, so some reported margin changes differ slightly from changes calculated using the rounded percentages in the table.

Business and Segment Performance

Direct materials outpaced indirect materials, supported by fastener demand and manufacturing customers. Manufacturing generated 76.6% of sales and increased daily sales by 17.2%, led by 20.2% growth in heavy manufacturing. Non-residential construction recorded its sixth consecutive quarter of growth.

Contract customers remained the main growth engine. Their daily sales rose 18.8%, compared with 7.8% for non-contract customers, as Fastenal continued implementing customer agreements signed since early 2024.

Product, end-market and customer categories overlap and therefore should not be added together.

The shift toward larger relationships was also visible in customer-site data. Sites generating at least $50,000 in monthly sales increased to 3,288 from 2,771, while their quarterly sales rose to $1,456.6 million from $1,141.9 million. Total active sites declined, but average monthly sales per site increased to $9,047 from $7,149.

Digital channels broadly tracked company growth. Fastenal Managed Inventory sales increased 14.6% to $1,121.3 million, while eBusiness sales rose 14.8% to $721.5 million. Digital Footprint sales advanced 16.1% to $1,536.5 million and represented 61.4% of total sales. Within FMI, FASTBin and FASTVend sales grew 17.6%, compared with 7.0% growth for FASTStock.

Larger Customers Compress Gross Margin but Expand Operating Margin

Fastenal’s customer mix explains the quarter’s divergence between gross margin and operating margin. The continued shift toward larger customers reduced gross margin by approximately 50 basis points, while price-cost effects reduced it by another 30 basis points. Direct sourcing savings, supplier rebates and tariff refunds provided offsets, including approximately 20 basis points of favorable timing benefit.

Those larger relationships generally carry lower gross margins, but Fastenal said they produce more absolute profit dollars and support operating efficiencies. SG&A as a percentage of sales fell 130 basis points: employee-related expenses provided 90 basis points of leverage and occupancy costs provided another 50 basis points, partly offset by a 10-basis-point increase in other expenses. Higher labor productivity and fixed-cost leverage therefore more than compensated for the lower gross-margin rate.

Cash Flow and Balance Sheet

Operating cash flow reached $421.6 million, equal to 105.0% of net income. Although cash flow increased 9.0%, conversion declined from 115.3% of net income a year earlier because strong sales growth required more cash for receivables and inventory.

Accounts receivable increased 19.9% to $1,615.2 million, reflecting sales growth and a greater contribution from larger customers with longer payment terms. Inventory rose only 3.1% to $1,776.6 million despite double-digit sales growth, while accounts payable increased 29.3% to $445.8 million as purchasing activity expanded to support demand.

Net property and equipment investment was $71.8 million, up from $54.7 million. Total debt declined to $100.0 million from $195.0 million, reducing debt to 2.4% of total capital from 4.8%. Fastenal returned $328.4 million to shareholders through $298.2 million of dividends and $30.2 million of share repurchases, equal to 81.8% of quarterly net income.

Earnings Guidance

Fastenal lowered its 2026 goal for weighted FASTBin and FASTVend device signings, even as third-quarter signings increased 6.2% to 7,484 MEUs. The company maintained its capital investment range, which remains above 2025 spending because of the Atlanta hub replacement, distribution capacity improvements, delayed IT projects and increased trucking investment.

Fastenal also estimated an ongoing tax rate of approximately 24.6%, excluding discrete items or broader changes in tax law.

Recent Insider Transactions

The supplied insider data shows 51,622 shares purchased in six transactions and 50,222 shares sold in four transactions over the latest six-month period, resulting in net purchases of 1,400 shares. The table lists the four reported sales among the most recent transaction records; derivative exercises and a stock gift are excluded.

Values are presented as reported in the supplied transaction data, which did not specify their currency.

Risks Investors Need to Watch

• Customer-mix pressure on gross margin: Larger customers supported sales and operating leverage but reduced gross margin by approximately 50 basis points. Continued mix shifts could keep the gross-margin rate under pressure.
• Price-cost and timing effects: Price-cost reduced gross margin by about 30 basis points, while approximately 20 basis points of the quarter’s benefit came from favorable timing.
• Working-capital requirements: Receivables grew faster than sales as larger customers carried longer payment terms, lowering operating cash flow relative to net income compared with the prior year.
• Dependence on contract and manufacturing customers: Contract customers represented 76.5% of sales, while manufacturing accounted for 76.6%, making their demand and implementation activity increasingly important to consolidated growth.
• Digital deployment and investment execution: Fastenal reduced its device-signing goal while maintaining elevated capital spending for facilities, IT and trucking, increasing the importance of delivering the intended capacity and efficiency benefits.

Summary

Fastenal’s Q3 2026 results combined broad sales growth, larger contract-customer gains and improved expense leverage. The larger-customer mix lowered gross margin, but labor productivity and fixed-cost absorption produced faster operating income growth and a higher operating margin. The next areas to monitor are gross-margin pressure, receivables and cash conversion, progress toward the revised digital-device goal, and returns from the company’s elevated capital investment program.