| Schedule of common stock sold to related parties |
| | | | | | | | | Number of | | Aggregate | | | | Shares of | | Purchase | | | Common Stock | | Price | Owners of More Than 5% of Our Common Stock | | | | | | | OrbiMed Advisors LLC (1) | | | 1,285,714 | | $ | 4,499,999 | Board of Directors | | | | | | | Richard A. Miller, M.D. | | | 100,000 | | | 350,000 |
| (1) | Peter Thompson, M.D., a member of our Board of Directors since November 2014, is a Private Equity Partner at OrbiMed Advisors, LLC. |
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