BlackBerry has kicked off the week with a round of C-level departures.

The embattled Canadian mobile communications firm has announced that COO Kristian Tear, CMOFrank Boulben, and CFO Brian Bidulka will all leave the company.

Bidulka's CFO spot wasn't empty for long, however, as former senior VP James Yersh was nominated to the post. Bidulka, meanwhile, will stay on for the balance of the fiscal year as "a special advisor to the CEO".

Board member Roger Martin, who has been at his post since 2007, announced his resignation as well.

House of cards

These three high-level departures follow the ouster of CEO Thorsten Heins earlier in November as the firm abandoned its planned $4.7 billion sell off to Fairfax Holdings following a $965 million quarterly loss.

Earlier this year, BlackBerry cut 4,500 jobs across its global workforce.

Speaking on the three C-level departures, executive chair and CEO of BlackBerry John Chen claimed that the company has "a strong cash position" and is looking toward the future.

"Building on this core strength, and in conjunction with these management changes, I will continue to align my senior management team and organisational structure," added Chen.

"[I will] refine the company's strategy to ensure we deliver the best devices, mobile security and device management through BES 10, provide multi-platform messaging solutions with BBM, and expand adoption of QNX embedded systems."

[source: BlackBerry]