Sonoco's stock experienced a significant after-hours plunge of 6.41% following the release of its first-quarter 2026 financial results.

The company reported quarterly adjusted earnings of $1.20 per share, which narrowly missed the analyst consensus estimate of $1.21. More notably, quarterly sales of $1.676 billion fell short of the $1.713 billion estimate, representing a 1.9% decrease compared to the same period last year. The sales decline was attributed primarily to the divestiture of the ThermoSafe business in November 2025, along with lower volumes and less favorable product mix in both Consumer and Industrial segments.

Adding to investor concerns, the company indicated it is now targeting the low end of its full-year 2026 adjusted diluted EPS guidance range of $5.80 to $6.20. Management cited ongoing inflation pressures and uncertain macroeconomic conditions that may continue to impact demand and input costs throughout the year.