Flowserve's stock experienced a significant after-hours plunge of 9.79% following the release of its first-quarter 2026 financial results.

The company reported quarterly sales of $1.07 billion, which missed analyst expectations of $1.17 billion and represented a 6.7% decrease compared to the same period last year. Additionally, operating income fell 9.4% to $119.4 million.

While adjusted earnings per share of $0.85 exceeded estimates, investors reacted negatively to the sales shortfall and the company's decision to lower its full-year 2026 total sales growth outlook to a range of +3% to +6%.