Snapchat billboard in Times Square, New York City on May 19, 2015.

(By Lauren Hirsch and Liana B. Baker, Reuters) – Snap Inc., the secretive technology company that owns the popular messaging service Snapchat, is due to reveal its financials within a week as it moves toward its eagerly awaited initial public offering (IPO), sources familiar with the situation said on Friday.

The Venice, California-based company will publish the registration document it secretly filed with U.S regulators last autumn, containing a dossier of tightly held finances and its plans for operating as a public company.

The sources, who cautioned that Snapchat’s plans may still change, asked not to be named because the information is private. A spokeswoman for Snap Inc. declined to comment.

Snap Inc expects to go public as soon as March and could be valued at $20 billion to $25 billion, based on reports of its latest round of funding, which would make it the largest U.S. technology IPO since Facebook’s in 2012.

Snapchat has already confidentially filed…