Shares of Everbridge lost close to half their worth on Friday after the software organization said CEO David Meredith surrendered taking effect right now.

Everbridge, whose technology assists organizations with managing public security crises, saw its stock price rocket during the early months of the Covid-19 pandemic as cities across the country sent its software to get notifications out to the public.

Investor opinion turned significantly in November, as the stock plunged 29% for the month. The drop began after the organization’s earnings report on Nov. 9. In spite of revealing better-than-expected sales for the third quarter and giving a hopeful revenue outlook, the shares fell 13% the next day and afterward declined for nine all the more sequential days.

All things considered, Meredith’s abrupt flight comes as a shock and without clarification.

“Mr. Meredith’s resignation is not related to any matter regarding the Company’s financial condition, reported financial results, internal controls or disclosure controls and procedures,” Everbridge said in a press release on Thursday, after the close of regular trading.

An Everbridge representative declined to comment beyond what was stated in the release.

Everbridge said Chief Financial Officer Patrick Brickley and Chief Revenue Officer Vernon Irvin will become interim co-CEOs “to assume strategic and operational control of the business.” The company said it has begun a search for a permanent CEO “and will consider both internal and external candidates.”

Meredith joined Everbridge in mid-2019 subsequent to spending more than two years as operating chief at Rackspace. As of the finish of October, the stock had climbed 63% during his residency. Following the declaration of his departure, it’s currently down around 37% since he was named CEO.

Everbridge emphasized its guidance for the final quarter and said it expects revenue growth of 20% to 23% in 2022. That is lower than the 24% growth expected by examiners, as per a Refinitiv survey.

Investigators at Stifel downsized their rating from purchase to hold after the declaration.

“The timing and uncertainty around the circumstances of Mr. Meredith’s departure combined with the company’s guidance introduces a high degree of uncertainty into the story in the near term,” they wrote. “We are moving to the sidelines while we digest the disruption Mr. Meredith’s departure will have on the company’s operations and assess the potential changes made to the business under its new Co-CEO’s and future leadership.”

Everbridge shares shut down 45% to $63.