Forensic Analysis · Nonmetallic Mineral Mining & Quarrying · as of Nov 8, 2026

Martin Marietta Materials Inc (MLM)

A forensic read on Martin Marietta Materials Inc built from its complete SEC filings — financial-health screens, earnings quality, red flags and a price-aware rating. Reproducible math, not opinion.

B · Sound & dependable

Forensic grade

Safe

Financial health

3.6

Distress distance

Clean

Earnings quality

Forensic signals

11.7%

ROE

8.6%

Revenue growth

This free snapshot doesn't read filing or proxy text, so the auditor-quality and governance checks that can lower a grade were not evaluated (auditor quality, say on pay, board independence, going concern). Those checks only ever lower a grade, so the full analysis can land below the grade above but never above it — treat it as the most favourable reading, not the settled one.

Martin Marietta Materials Inc earns a B (Sound & dependable) forensic quality grade, and its balance-sheet distress test reads 3.6, placing it in the Safe zone. 1 forensic signal was flagged in its latest SEC filings, led by return on invested capital.

What the filings flag

6.7%

FY2025

Return on invested capital. Return on invested capital is 6.7% in the latest fiscal year, against 8.2% in FY2023, having run between 6.7% and 12.8% across FY2023–FY2025 with no direction held. After-tax operating profit was $1.1B in FY2023 and $1.2B in FY2025, with operating income at 22.8% of revenue in FY2023, 43.8% in FY2024 and 23.4% in FY2025. The capital base behind it grew +31% across FY2023–FY2025, from $13.1B to $17.2B, while the return fell 1.5 points, so the dollars added over that window earned less than the 8.2% the older base was already earning.

Key fundamentals

Latest Revenue$6.15B

Revenue Growth YoY+8.6%

Revenue CAGR (2yr)+2.5%

Net Margin18.5%

Free Cash Flow$978.0M

Return on Equity11.7%

Debt / Equity0.53x

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Data from SEC EDGAR public filings · metrics as of Nov 8, 2026. Forensic signals flag probability, not certainty.

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