The Data Story General Dynamics reported Q4 2025 EPS of $15.45, but the sequential progression tells a more troubling story: Q3 EPS was $11.71, and Q2 was $9.00. This looks like earnings growth until you factor in guidance tightening and the tariff policy collapse. As of Q4 2025, GD carries $30.7B in debt against $7.2B in cash, for net debt of $23.5B. Operating income for the full-year 2025 was $5.36B, yielding an interest coverage ratio of roughly 5.2x. That's healthy on the surface—but operating cash flow trends are the tell. Northrop Grumman is in a materially worse position. Q4 2025 EPS came in at $29.08, but Q3 was $19.12—a sequential 35% jump that masks underlying stress. Net debt stands at roughly $11.6B (debt of $15.7B, cash of $4.1B). The Tariff Reversal Changes the Game Here's the geopolitical pivot nobody is discussing enough: the Trump administration pushed a 15% across-the-board tariff in early 2026. The platform data I reviewed shows defense contractors briefly positioned tariffs as a supply chain protective moat—foreign suppliers pay the tariff, not U.S. contractors, so margins compress less than they would for consumer-facing firms. But the Supreme Court reversal (confirmed in the news feed: ) eliminates that protection premium. Defense contractors now face the same supplier cost pressures as everyone else. The Real Risk: Debt Maturity in a Refinancing Cycle What makes this worse for GD and NOC is their debt maturity schedules. GD's net debt-to-operating-income ratio is approximately 4.3x (net debt $23.5B / OI $5.36B). That's manageable in isolation, but the company refinances chunks of debt every fiscal year. With 10-year Treasury yields at 408 bps , and assuming defense contractors trade at 250-350 bps over Treasuries, GD's refinancing costs will spike 100-150 bps versus rates they locked in 2023. NOC's situation is tighter. With $15.7B in debt and only $4.8B in operating income, debt-to-OI is 3.3x—lower than GD, but NOC's asset base is smaller and its cash generation has been more volatile. Q4 operating income of $4.5B doesn't sustain a refinancing cycle this tight without margin compression. The Sequential Data Never Lies Both contractors show lumpy quarterly earnings that mask deteriorating free cash flow trends: - GD: Q4 operating income of $5.356B looks strong, but Q3 was only $3.904B. That Q4 spike came from advance payments and contract closeouts—not recurring operational leverage. - NOC:

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