MasTec Q3 2026 Earnings: Power Delivery Drives 30% Revenue Growth

MasTec (NYSE: MTZ) reported Q3 2026 revenue of $5.15 billion, up 29.9% from $3.97 billion a year earlier, while GAAP diluted EPS fell 7.7% to $1.89 from $2.04. Record adjusted EBITDA rose 30.2% to $486.4 million, as Power Delivery growth offset weaker profitability in Pipeline Infrastructure and Communications.

Core Earnings Results

For the quarter ended September 30, 2026, revenue and adjusted EBITDA reached quarterly records. However, operating income increased only 10.4%, GAAP net income was nearly flat, and net margin contracted by 90 basis points, showing that the higher revenue did not translate proportionally into GAAP profit.

Cash generation improved more sharply. Quarterly operating cash flow tripled to $267 million, while free cash flow increased to $206 million.

Adjusted EBITDA margin remained unchanged at 9.4%, indicating that the increase in adjusted profit broadly tracked revenue growth.

Segment Performance

Power Delivery was the principal growth engine, while Pipeline Infrastructure and Communications reported substantial margin declines. Clean Energy and Infrastructure delivered strong revenue growth but experienced modest margin compression.

Power Delivery benefited from both MasTec’s legacy operations and The Superior Group, which was acquired in July and added large-load electrical infrastructure capabilities. Segment EBITDA grew more than twice as fast as revenue, lifting the margin to 13.2%.

Pipeline Infrastructure’s revenue increased, but permitting-related access delays left crews and equipment underutilized. This caused EBITDA to decline 18.4% and reduced the segment margin by five percentage points. Construction on the affected projects has since begun, according to management.

Communications was affected by customers deferring spending during the second half of 2026. MasTec is streamlining operations, procurement and support functions and exiting underperforming markets, but management expects these measures to begin improving profitability in 2027 rather than immediately.

Backlog Reached Another Record

Estimated 18-month backlog rose 46.3% year over year and approximately $3.2 billion sequentially to $24.55 billion. Power Delivery backlog increased about 74% year over year to $8.91 billion, while Pipeline Infrastructure backlog rose about 26% from the preceding quarter to $2.27 billion.

Communications backlog was approximately flat year over year at $5.05 billion and declined from $5.46 billion in the preceding quarter. The backlog mix therefore reinforces the same divergence visible in quarterly results: utility, large-load and pipeline demand is expanding, while Communications remains under pressure.

Power Delivery Growth Did Not Fully Reach GAAP EPS

MasTec’s revenue increased almost 30%, but operating income rose only 10.4% and GAAP diluted EPS declined. The difference reflects margin pressure outside Power Delivery as well as higher expenses and a larger share of earnings attributable to noncontrolling interests.

Amortization of intangible assets increased to $75.3 million from $32.7 million, while net interest expense rose to $61.8 million from $45.4 million. Net income attributable to noncontrolling interests also increased to $17.2 million from $5.8 million. Consequently, net income attributable to MasTec fell to $150.6 million from $160.7 million even though consolidated net income increased slightly. A higher diluted share count also contributed to the EPS decline.

These items help explain why adjusted diluted EPS increased 19.3% while GAAP diluted EPS fell 7.7%. The growing difference between the two measures is especially relevant following MasTec’s acquisitions and the associated increase in intangible-asset amortization.

Cash Flow and Balance Sheet

For the first nine months of 2026, operating cash flow was $387.8 million, compared with $173.0 million in the prior-year period. Nine-month free cash flow improved to $158.5 million from $35.6 million after capital expenditures and proceeds from property and equipment sales.

MasTec ended the quarter with $481.8 million of cash and cash equivalents. Total debt was $4.17 billion, producing net debt of $3.69 billion, up from $1.93 billion at December 31, 2025. The increase followed the Superior acquisition and related financing, including a $700 million term loan and $650 million of senior unsecured notes.

The company also increased its revolving credit commitments from $1.9 billion to $2.25 billion. This added liquidity and extended the financing structure, but the higher debt balance was accompanied by increased quarterly interest expense.

2026 Guidance

MasTec updated its full-year 2026 guidance, with management saying the adjusted EBITDA midpoint changed by approximately 1% from its previous outlook. The new range accounts for possible effects from delayed Pipeline Infrastructure project starts and the reduced time available to reach normal production rates before year-end.

At the midpoint, MasTec said the GAAP diluted EPS range represents 15% year-over-year growth, while adjusted diluted EPS implies 39% growth. Revenue and earnings delayed by project timing are expected to shift into 2027 rather than disappear, although their recognition will depend on construction ramp-up and execution.

Recent Insider Transactions

The supplied insider-transaction data showed 1,781 shares classified as purchases across 14 transactions during the latest six months, compared with 9,500 shares sold in two transactions. This resulted in net sales of 7,719 shares, a very small amount relative to the reported 16.78 million shares held by insiders. The 14 purchases were zero-price director stock awards rather than open-market purchases.

The latest 10 reported transactions consisted of nine director stock awards and one sale. These records describe the transactions but do not establish insiders’ views about MasTec’s outlook.

Risks Investors Need to Watch

• Pipeline project timing: Permitting and access delays have already reduced labor and equipment utilization. Further delays could continue to pressure margins and shift revenue and earnings into later periods.
• Communications weakness: Deferred customer spending caused double-digit revenue contraction and a 460-basis-point margin decline. MasTec’s cost actions are not expected to contribute meaningfully until 2027.
• Higher leverage and interest expense: Net debt increased substantially following acquisitions and financing activity. Higher interest costs can limit how much operating growth reaches GAAP earnings.
• Backlog conversion: Record backlog improves revenue visibility, but timing depends on project starts, permits and customer activity. MasTec also notes that its backlog methodology may not be directly comparable with that of other companies.
• Acquisition-related earnings adjustments: Higher intangible amortization and integration expenses have widened the gap between GAAP and adjusted results, making acquisition execution important to future earnings quality.

Summary

MasTec’s Q3 2026 results were led by exceptional Power Delivery growth and a record backlog, but Pipeline Infrastructure delays and weaker Communications profitability limited GAAP earnings growth. Cash generation improved, while acquisition financing raised debt and interest expense. The main issues to monitor are the pace of pipeline project ramp-ups, stabilization in Communications, conversion of the expanded backlog and MasTec’s ability to turn revenue growth into stronger GAAP margins.