Semler Scientific, which sells devices that measure arterial blood flow in patients, filed on Friday with the SEC to raise up to $15 million in an initial public offering. The Portland, OR-based company, which was founded in 2007 and booked $2 million in sales for the 12 months ended September 30, 2013, plans to list on the NASDAQ under the symbol SMLR. Semler Scientific initially filed confidentially on October 10, 2013. Aegis Capital is the sole bookrunner on the deal. No pricing terms were disclosed.