Social networking and microblogging service Twitter has filed a Form S1 to with the US Securities Exchange Commission (SEC) for its planned IPO issue.
The announcement was made through a tweet, which reads "We've confidentially submitted an S1 to the SEC for a planned IPO. This tweet does not constitute an offer of any securities for sale."
Twitter has already filed the documents confidentially under a special laws of the Jumpstart Our Business Startups (JOBS) Act of 2012 of US SEC, which allows companies with less than $1bn of revenue per year to keep the financial data under wrap until they market the IPO.
Started seven years ago, Twitter application allows its users to send out 140-character messages, emerged as a leading platform of public conversation across the world.
The microblogging site currently claimed to have more than 200 million users.
Earlier this week, the company has agreed to acquire mobile advertising exchange MoPub for $350m in an effort to launch its independent mobile advertising exchange in the near future.
Research firm eMarketer estimates that Twitter's revenues will reach $582m this year and $1bn in 2014. The company has been valued at more than $10bn (£6.3bn) by private investors.