Of the shares of Common Stock reported as beneficially owned herein, The Sirovich Family Charitable Foundation (the “Sirovich Foundation”) directly holds 1,414,904 shares of Common Stock and Series Z Warrants to purchase 857,452 shares of Common Stock. Matthew Sirovich is a Director and President of the Sirovich Foundation and may be deemed to beneficially own the shares of Common Stock and shares of Common Stock underlying the Series Z Warrants held by the Sirovich Foundation. In addition, The Boomer Fund, L.P. (“Boomer”) directly holds 792,000 shares of Common Stock and Series Z Warrants to purchase 466,000 shares of Common Stock. Mr. Sirovich is the general partner of Boomer and may be deemed to beneficially own the shares of Common Stock and shares of Common Stock underlying the Series Z Warrants held by Boomer. Mr. Sirovich directly holds and beneficially owns 738,914 shares of Common Stock and Series Z Warrants to purchase 458,257 shares of Common Stock. The Series Z Warrants were exercisable upon issuance for an exercise price of $1.60 per share of Common Stock and expire on April 30, 2024. As of December 31, 2019, Mr. Sirovich also held Series S Warrants to purchase 1,199,383 shares of Common Stock. The Series S Warrants were subject to a limitation on exercise such that they could not be exercised if following such exercise Mr. Sirovich would beneficially own greater than 4.75% of the outstanding shares of the Issuer's Common Stock. Such limitation on exercise was lifted on January 23, 2019. The percentage of beneficial ownership reported herein is based on a total of 38,114,213 shares of Common Stock outstanding as of November 29, 2019, as reported in the Issuer’s Form S-3 filed with the Securities and Exchange Commission on December 3, 2019, plus 1,781,709 shares of Common Stock issuable upon the exercise of Series Z Warrants, plus 1,199,383 shares of Common Stock issuable upon the exercise of Series S Warrants. |