Marketo, which provides on-demand marketing software for B2B professionals, filed on Tuesday with the SEC to raise up to $75 million in an initial public offering. The San Mateo, CA-based company, which was founded in 2006 and booked $58 million in sales for the 12 months ended December 31,2012 plans to list on the NASDAQ under the symbol MKTO. Notable venture capital backers include InterWest Partners (34% pre-IPO stake), Storm Ventures (18%), Mayfield Funds (14%), Institutional Venture Partners (13%) and Battery Ventures. Marketo initially filed confidentially on February 25, 2013. Goldman Sachs and Credit Suisse are the joint bookrunners on the deal. No pricing terms were disclosed.