Dick Costolo, Chief Executive Officer of Twitter, speaks on stage during the TechCrunch Disrupt SF 2013 technology conference in San Francisco, California September 9, 2013. (REUTERS/Stephen Lam)

Twitter has submitted preliminary paperwork for an IPO in the coming weeks, the company let slip Thursday.

(Twitter)
(Twitter)

Outside analysts pegged Twitter's valuation at around $10 billion earlier this year. At the risk of understatement, that's pretty good for its investors, who have poured some $1.16 billion into the company since its inception.

Twitter's confidential filing takes advantage of the JOBS Act, which allows companies to submit their IPO documents secretly if they make less than $1 billion a year.

The company has been buying up other firms like crazy lately — eight startups this year alone, more than any other year in its history.