DocuSign unveils IPO filing

DocuSignhas unveiled its IPO filing, confirming our scoop from last week. 
The company had previously filed confidentially and the timing of the filing revelation implies that DocuSign is hoping to go public in late April.
Founded in 2003, the San Francisco-based e-signature company has been an anticipated IPO for a while. It’s raised over $500 million over the past 15 years and has been valued as high as $3 billion. 
The filing gives us a first glimpse at the company’