As the firm's IPO nears, Zynga's latest S1 filing has revealed it acquired two firms during the last month, for a total of $4.9 million.

Little detail has been given on the firm's in question – indeed, it's not clear whether said companies were even development studios – but they follow a number of acquisitions by Zynga in the run up to its public offering.

Significantly insignificant

"From October 1, 2011 through November 17, 2011, we acquired two companies to expand our online social game offerings and our software development and engineering teams," Zynga stated in the filing.

"These acquisitions were not individually significant and had an aggregate purchase price of $4.9 million."

The latest IPO amendment comes as Zynga confirms the departure of senior executive Owen Van Natta.

Zynga claims Van Natta had only ever planned to stay at the company for 'one or two years' when he joined in 2010, according to the Wall Street Journal.

[source: GamesIndustry.biz]