The shakeup at Blackberry (Nasdaq: BBRY) is continuing after the ouster of CEO Thorsten Heins earlier this month.

Chief Operating Officer Kristian Tear and Chief Marketing Officer Frank Boulben, both hired by Heins, will leave the struggling smartphone maker.

And the company said Monday that Brian Bidulka is being replaced by James Yersh as chief financial officer. Yersh previously served as senior vice president and controller. Bidulka will remain with the company as an adviser for the remainder of the company’s fiscal year.

Sybase CEO John Chen was brought in as the interim chief executive after negotiations to sell the Ontario company collapsed. Chen also serves as chairman of the board.

BlackBerry maintains two research and development offices in Cary. 

Chen, the former CEO of Sybase Inc., took the reins at BlackBerry on Nov. 4, following a failed attempt by Fairfax Financial Holdings Ltd. to buy the Waterloo, Ontario-based company for $4.7 billion. BlackBerry then raised $1 billion in a convertible debt sale, giving it more of a cushion as Chen formulates his comeback plan.

“The organization was top-heavy to begin with,” said Sameet Kanade, an analyst at Jacob Securities Inc. in Toronto. “If the management team was not effective, it made sense to start with a clean slate.”

BlackBerry rose 0.6 percent to $6.28 at 9:39 a.m. in New York. The stock had dropped 47 percent this year through Friday.

Neither Boulben nor Tear will be replaced, BlackBerry said.

Board member Roger Martin also has resigned from the company.

Getting rid of the operating chief “shows that Chen wants a more hands-on approach,” Kanade said. The move also might be a precursor to bringing some of his former Sybase colleagues over to BlackBerry, he said.

Chen, who also serves as executive chairman, will give an update on the company’s new organizational structure when BlackBerry posts its fiscal third-quarter earnings on Dec. 20. It’s expected to report a loss of 42 cents a share, excluding some items, and a sales decline of 42 percent to $1.59 billion, according to a Bloomberg survey of analysts’ estimates.

“I look forward to working more directly with the talented teams of engineers and the sales and marketing teams around the world to facilitate the BlackBerry turnaround and to drive innovation,” Chen said in today’s statement.