RingCentral's stock experienced a significant after-hours plunge of 5.71% following the release of its quarterly earnings results and forward guidance.

The cloud communications company reported first-quarter revenue of $644.199 million, slightly above the IBES estimate of $642.7 million, with earnings per share of $0.35. However, investors appeared disappointed with the company's outlook, which includes second-quarter revenue guidance of $648-653 million and adjusted EPS of $1.15-$1.17, along with full-year revenue guidance of $2,620-$2,640 million and adjusted EPS of $4.85-$5.01.