Littelfuse profits surge 34% in 2025 despite $301M semiconductor writedown

Littelfuse (NASDAQ:LFUS) reported a complex finish to fiscal 2025, delivering record adjusted earnings and strong operational growth while taking a significant non-cash hit to its semiconductor portfolio.

The Chicago-based company posted fourth-quarter net sales of $594 million, a 12% increase year-over-year, driven by resilient demand in data centers, renewable energy, and industrial safety.

Despite the top-line momentum, the company recorded a $301 million goodwill impairment charge related to the Semiconductor Products unit within its Electronics segment.

The writedown reflects a strategic revaluation of the division amid soft market conditions for legacy power semiconductors.

This led to a GAAP diluted loss of ($9.72) per share for the quarter, though investors focused on the adjusted diluted EPS of $2.69, which demonstrated the underlying strength of the company's core business.

The operational highlight of the quarter was the dramatic expansion of the adjusted EBITDA margin, which jumped 480 basis points to 20.5%.

For the full year, adjusted EPS surged 34% to $10.68.

This profitability boost was largely credited to a favorable product mix and the integration of higher-margin industrial protection systems.

Looking ahead to 2026, Littelfuse expects approximately 15% total revenue growth for the first quarter, supported by its strengthening backlog and the full-quarter contribution of Basler Electric.