Forensic Analysis · Industrials / Manufacturing / Defense · as of Aug 11, 2026

Littelfuse Inc (LFUS)

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

D · Weak — demands caution

Forensic grade

Safe

Financial health

11.0

Distress distance

Clean

Earnings quality

Forensic signals

-1173.4

P / E (ttm)

-3.0%

ROE

$11.7B

Market cap

0.70%

Dividend yield

8.9%

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 (red flags, auditor quality, say on pay, board independence). 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.

Littelfuse Inc earns a D (Weak — demands caution) forensic quality grade, and its balance-sheet distress test reads 11.0, placing it in the Safe zone. 3 forensic signals were flagged in its latest SEC filings, led by return on invested capital.

What the filings flag

0.8%

FY2025

Return on invested capital. Return on invested capital is 0.8% in the latest fiscal year and slipping from 15% — well below its ~9% cost of capital, so reinvested dollars may be destroying value, not building it.

$380M

FY2020–FY2025

Goodwill impairments. Took $380M of goodwill writedowns across 3 years (FY2020 ($34M), FY2024 ($45M), FY2025 ($301M)) — about 35% of net income over the span. A large writedown means an acquisition turned out worth far less than was paid — a real mark against M&A discipline.

-0.2%/yr

FY2022–FY2025

Share count. Diluted share count changed -1% over the last 3 years to FY2025 (-0.2%/yr). Roughly flat — buybacks ($28M) are about offsetting stock comp ($27M), not shrinking the count. Per-share value isn't being meaningfully helped or hurt by the count.

Key fundamentals

Latest Revenue$2.39B

Revenue Growth YoY+8.9%

Revenue CAGR (3yr)-1.7%

Net Margin-3.0%

Free Cash Flow$366.1M

Return on Equity-3.0%

Debt / Equity0.33x

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Data from SEC EDGAR public filings · metrics as of Aug 11, 2026. Forensic signals flag probability, not certainty.