NASHVILLE, Tenn.--(BUSINESS WIRE)--Louisiana-Pacific Corporation (LP) (NYSE: LPX), a leading manufacturer of high-performance building products, today reported its financial results for the fourth quarter and year ended December 31, 2025. Key Highlights for the Fourth Quarter of 2025, Compared to the Fourth Quarter of the Prior Year Siding net sales increased by $23 million, or 6%, to $384 million Oriented Strand Board (OSB) net sales decreased by $132 million to $136 million Consolidated net s.