Northrop Grumman (NYSE: NOC) raised its full-year segment operating income and MTM-adjusted EPS guidance after a third quarter that beat analyst estimates on both revenue and profit. The beat came from a lower effective tax rate and margin expansion at its largest segment.
Diluted EPS of $7.89 cleared the $7.18 consensus by $0.71. Revenue of $11.12B landed essentially on top of the $11.14B forecast. A 350bp drop in the effective tax rate to 13.4% powered the outperformance. Management attributed the decline to higher research credits. Net earnings rose just 2% to $1.12B, but buyback-driven share count reduction let per-share growth outpace the bottom line.
The forward look commands attention. Northrop lifted its 2026 segment operating income midpoint by $65M to $4.94B–$5.04B, and its MTM-adjusted EPS midpoint by $0.70 to $29.35–$29.75. The raise is modest in percentage terms — roughly 1.3% on segment operating income and 2.4% on EPS — but it signals management's confidence that Q3's operational strength will persist. The company held its full-year sales guidance at $43.75B–$44.25B and adjusted free cash flow at $3.1B–$3.5B. Profit improvement is coming from margin execution, not top-line acceleration.
That execution showed up in the segment data. Aeronautics Systems, the largest segment at $3.58B in quarterly sales, expanded its operating margin rate by 80bps to 10.5%. Higher net contract margin adjustments on mature production and sustainment programs drove the gain. The improvement stands out given the segment's history of lumpy margin performance tied to F-35 production lot timing. Aeronautics Systems sales rose 14%, lifted by F-35 material costs and sustainment volume, higher B-21 sales, and increased B-2 sustainment work.
Defense Systems delivered a 12% sales increase to $2.31B, powered by the Sentinel intercontinental ballistic missile program ramp and higher volume on GMLRS ER rocket programs. Its operating margin rate contracted 60bps to 10.8% as contract mix shifted toward more cost-type content. That mix shift is structural for the segment as Sentinel moves through development phases. Whether margin pressure persists as the program matures remains an open question.
Mission Systems, the highest-margin segment at 15.8%, saw its operating margin rate decline 90bps from a year ago. The prior-year period had benefited from a $68M favorable EAC adjustment in the restricted advanced microelectronics portfolio. Strip out that tailwind and the underlying margin trajectory holds steady, supported by marine systems and restricted airborne radar programs. Space Systems posted a 30bps margin improvement to 11.3% on favorable contract mix toward fixed-price content.
The backlog figure arrests the eye. Net awards of $16.4B produced a book-to-bill of 1.5x, pushing total backlog to a record $109.6B. Composition matters here. Funded backlog of $50.1B gives near-term revenue visibility. Unfunded backlog of $59.5B represents contract awards awaiting appropriation. Significant new awards included $4.6B in restricted programs, $2.0B for Sentinel, $1.4B for Virginia Class submarines, and $1.3B for F-35. The backlog build is broad-based. Defense Systems backlog has surged 31% year-to-date. Aeronautics Systems is up 16%.
Adjusted free cash flow surged 44% to $1.81B in the quarter. $371M of that came from equipment sale to a customer — a non-recurring item. Excluding that, organic free cash flow generation was still strong at roughly $1.44B, aided by improved trade working capital. The balance sheet remains healthy, with net debt of $10.7B against trailing twelve-month EBITDA of roughly $6.5B.
The guidance raise, modest in magnitude, carries weight. Northrop is confident enough in its margin trajectory to lift profit expectations without touching the top-line guide. The record backlog provides a multi-year runway. The 1.5x book-to-bill suggests demand continues to accelerate. The open questions for coming quarters: can Aeronautics Systems sustain its margin improvement, and can Defense Systems stabilize its margin rate as Sentinel moves toward production? For now, the trajectory points clearly upward.