Online education company Pluralsight Inc. has filed for an initial public offering, seeking to sell up to $100 million in shares, according to a Securities and Exchange Commission filing late Monday. Pluralsight, based in Farmington, Utah, said that nearly 700,000 people in more than 150 countries have access to its training platform, which includes on-demand and online technology courses and business analytics tools. The company listed sales of $132 million in 2016 and of $167 million last year, and losses of $21 million in 2016 and $97 million in 2017. It listed risks such as slower-than-expected adoption of cloud-based learning platforms and inability to attract and retain authors, who are not employees. The company would trade on the Nasdaq stock exchange under the symbol PS.