Moderna Therapeutics, a buzzy startup with a $7 billion private valuation, filed paperwork on Friday to go public. According to a regulatory filing, Moderna President Dr. Stephen Hoge has a compensation package worth almost $24 million, rivaling the paychecks of some of big pharma's most high profile CEOs. One of the most highest-valued private companies in biotech is finally going public. Moderna Therapeutics, a company developing treatments based on messenger RNA, has racked up a private valuation of $7 billion. On Friday, it filed with the Securities and Exchange Commission to go public and raise $500 million.