Primoris's stock plummeted 7.03% in pre-market trading, following the release of its fourth quarter and full year 2025 financial results.

The infrastructure services firm reported quarterly results that exceeded analyst expectations, with Q4 revenue and adjusted earnings per share beating estimates. However, the market reaction was negative due to increased costs on certain renewables projects within its Energy segment, which impacted operating income. Additionally, lower storm restoration work contributed to the pressure on results, and adjusted earnings declined from the same quarter last year.

Despite issuing guidance for 2026 adjusted EPS that is slightly above expectations, investor concerns over project cost pressures and the year-over-year earnings decline drove the selloff in the pre-market session.