Cyan, which provides next generation packet-optical transport systems for software-defined networks (SDNs), filed on Thursday with the SEC to raise up to $75 million in an initial public offering. The Petaluma, CA-based company, which was founded in 2006 and booked $96 million in sales for the 12 months ended December 31, 2012, plans to list on the NYSE under the symbol CYNI. Cyan initially filed confidentially on December 20, 2012. Goldman Sachs, J.P. Morgan and Jefferies are the joint bookrunners on the deal. No pricing terms were disclosed.