Ubisoft CEO Yves Guillemot has told staff that the company will "fight to preserve [its] independence" in the wake of a significant stock purchase.

Mass media giant Vivendi purchased 6.6 percent of Ubisoft's stock last week for approximately US$160 million.

Citing Vivendi's penchant for "aggressively pursuing companies within the entertainment sector," Guillemot said in an internal company email that the purchase was "unsolicited and unwelcome."

"Our intention is and has always been to remain independent, a value which, for 30 years, has allowed us to innovate, take risks, create beloved franchises for players around the world," he continued.

Guillemot noted in a separate email that a Vivendi takeover would see an Ubisoft that would be "managed by people who don't understand our expertise and what it takes to succeed in this industry."

Vivendi owns TV/film corporation Canal+ Group and a range of music labels under Universal Music, and formerly owned NBCUniversal, before selling to General Electric (and ultimately to Comcast).

It also used to own Activision Blizzard, before a group led by CEO Bobby Kotick split the company off in 2013.