NOC — Q3 2026 Financial Report Analysis

Sales up 7% and guidance raised again, but pre-tax profit fell

Northrop Grumman's third-quarter 2026 sales rose 7% to $11.12 billion, with all four business segments growing and Aeronautics (+14%) and Defense Systems (+12%) doing most of the work. Diluted earnings per share (EPS, profit divided by the number of shares) rose 3% to $7.89. Those headline gains rest on two supports that are not about selling more: a lower tax bill, and a large swing in favorable contract-estimate changes. Pre-tax profit actually fell 2%. The order book is the strongest part of the quarter: $16.4 billion of new awards took backlog to a record $109.6 billion, and management raised its full-year profit and EPS guidance for the second quarter in a row.

The numbers

Operating margin is the share of revenue left after the costs of running the business, before interest and tax. Northrop also reports a "segment" version, which adds up the four business units' profits and leaves out pension accounting and corporate items. Northrop's management uses that version to judge the business units.

Where the growth came from

Aeronautics (military aircraft) grew sales by $433 million. The 10-Q credits a $195 million increase on the F-35, "driven by the timing of material costs on production lots and increased sustainment volume" (Northrop builds part of the F-35's fuselage), plus higher B-21 bomber sales and more B-2 maintenance work. Margin rose to 10.5% "primarily due to higher net contract margin adjustments, including on certain mature production and sustainment programs." Aeronautics accounted for $72 million of the company's $68 million segment profit increase. The other three segments together added $15 million, and larger intersegment eliminations (profit on work the segments do for each other, removed so it is not counted twice) took away $19 million.

Defense Systems (missiles, rocket motors, ammunition and the Sentinel nuclear missile) grew 12%. Sentinel added $180 million "as the program continues to ramp," helped by guided rocket (GMLRS ER) and tactical rocket motor work, offset by lower military ammunition volume. Margin fell to 10.8% from 11.4% because of a shift toward cost-type contracts. Under a cost-type contract the government pays costs plus a fee, which is lower risk but lower margin than a fixed-price contract.

Mission Systems (radars, sensors, electronics) grew just 2%, with airborne radar and marine systems gains partly offset by lower volume on restricted (classified) microelectronics. Its margin fell to 15.8% from 16.7%, but last year's quarter included a one-time $68 million favorable estimate change on that same microelectronics business. Without it, last year's margin would have been about 14.5%, so this year's 15.8% is better underlying performance, not worse.

Space Systems grew 2%. Classified space programs ramped up, offset by $136 million less revenue from Commercial Resupply Service flights to the International Space Station because of launch timing. Margin edged up to 11.3% on a shift toward fixed-price work.

What the headline numbers hide

• The EPS gain came from tax, not operations. Pre-tax earnings fell $25 million. The tax rate dropped 3.5 points because research credits rose to $112 million from $66 million. At last year's 16.9% rate, Q3 net earnings would have been about $1,079 million, or roughly $7.57 per share. That is below last year's $7.67. Diluted share count was only 0.8% lower (142.4 million vs 143.5 million), and there were no buybacks in the quarter, so share reduction added little.
• Estimate changes did more than all of the profit growth. Defense contractors book profit on long contracts using an estimate of total cost. When that estimate changes, they book the whole catch-up at once (an "EAC adjustment"). Net favorable adjustments were $221 million this quarter versus $81 million a year ago, an extra $140 million. Segment operating income rose only $68 million. Without the bigger catch-ups, segment profit would have been lower than last year. Adjustments like this happen every quarter, so it is not a one-off, but it is not repeatable revenue either. In Aeronautics alone, adjustments swung from -$66 million to +$124 million.
• Below operating income, two items pulled in opposite directions. The pension adjustment inside operating income fell $52 million (to $15 million), which is the main reason the GAAP operating margin fell more than the segment margin. Pension income below the operating line rose $31 million. "Other, net" fell $86 million, mostly because last year had gains on marketable securities.
• Cash conversion was good this quarter, weak year to date. Q3 operating cash flow of $1,745 million was 1.55x net earnings, helped by "improved trade working capital." For the nine months, operating cash flow of $1,369 million was only 0.44x net earnings of $3,093 million. Receivables billed and not yet billed rose to $9.98 billion from $7.92 billion in December (+26%), against 5% sales growth. That build is normal for Northrop before year-end collections, but it means the full-year cash target depends heavily on Q4.
• Part of the free-cash jump is a one-off. The $371 million from selling a B-21 test aircraft to the Air Force counts in adjusted free cash flow. Without it, Q3 free cash flow was $1,439 million, still up 15% from last year's $1,256 million.
• B-21 was quiet. The company "made no significant changes to the previously recognized loss" on the bomber's low-rate production phase. Cumulative losses stand at about $2.0 billion, and $1.0 billion of that is still a liability on the balance sheet (an accrual) to be used up as aircraft are built.

Did last time's read hold up?

Our Q2 report said the questions for Q3 were "whether GEM 63XL and SiAW stop producing charges, and whether second-half cash generation arrives on schedule." Mostly yes on both. The 10-Q says no single estimate change had a significant effect in Q3, after $91 million (GEM 63XL rocket motor) and $68 million (SiAW missile) charges in Q2. Space Systems still had net unfavorable adjustments of $15 million, so the cleanup is not fully over there. On cash, Q3 adjusted free cash flow of $1.81 billion turned the year-to-date figure from -$845 million to +$965 million, and cash rose to $3.74 billion from $2.3 billion at the end of June.

Takeaway: Demand keeps outrunning Northrop's ability to deliver. Orders of 1.5x sales pushed backlog to $109.6 billion, and Defense Systems backlog is up 31% this year. But this quarter's earnings growth came from a lower tax rate and $140 million more favorable estimate changes, not from more profitable work. The test for the next year is whether margins rise as the B-21 and Sentinel move further into production. Higher volume alone is not enough.

Outlook

Management raised full-year 2026 profit guidance again:

MTM-adjusted EPS leaves out the "mark-to-market" pension gain or loss Northrop books at year-end when it revalues its pension plans. Segment margin guidance moved up for Aeronautics (high 9%, from mid-to-high 9%) and Mission Systems (mid 15%, from about 15%).

What that implies for Q4, from the guidance minus the nine-month results:

• Sales of about $11.9–12.4 billion, versus $11.1 billion in Q3.
• Segment operating income of about $1.37–1.47 billion, a segment margin of roughly 11.5–11.8%. That is lower than Q3's 12.1%, so the raise does not assume Q3's margin repeats.
• Adjusted free cash flow of about $2.1–2.5 billion in one quarter. That is more than Q3's $1.81 billion, which already included the $371 million aircraft sale.

The backlog supports revenue growth: Northrop expects to turn about 35% of the $109.6 billion into revenue over the next 12 months and 55% over 24 months. The 10-Q flags the main near-term risk. A continuing resolution (a stopgap law that keeps funding at last year's levels) funds the Department of War only through December 11, 2026. It requires prior approval from Congress for any new multi-year weapons contracts. If it lapses without a replacement, there could be a government shutdown. Guidance explicitly does not assume a prolonged shutdown. The administration's FY2027 defense request of $1.45 trillion would be a 44% increase over FY2026, but Congress has not acted on it.

Our read: The order book and cash are now moving the right way. Q4 cash is the number to watch, because hitting the $3.1–3.5 billion target needs the company's largest quarter of the year. Earnings quality is the weak spot. This quarter's EPS beat a year ago only because of tax credits and estimate catch-ups. Shareholders get dividends ($1.0 billion so far this year) but almost no buybacks: $68 million year to date and none in Q3, while the $2.5 billion B-21 capacity investment is under way. The things to watch in Q4 are the cash delivery, whether Space Systems stops booking unfavorable adjustments, and whether the December 11 funding deadline delays new contract awards.

Source: Northrop Grumman Form 10-Q for the quarter ended September 30, 2026, and the Q3 2026 earnings release (Exhibit 99 to Form 8-K), both filed October 20, 2026. Segment operating income, segment margin, MTM-adjusted EPS and adjusted free cash flow are company-defined non-GAAP measures.