Venrock Healthcare Capital Partners III, L.P. bought LYCA

Footnotes

Consists of (i) 12,898 shares held by VHCP3; (ii) 1,292 shares held by VHCP Co-3; and (iii) 14,189 shares held by VHCP EG.; The price reported in Column 4 is a weighted average price. These securities were purchased in multiple transactions at prices ranging from $26.00 to $26.25 inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of securities purchased at each separate price within the range set forth in this footnote.; Consists of (i) 24,061 shares held by VHCP3; (ii) 2,410 shares held by VHCP Co-3; and (iii) 26,468 shares held by VHCP EG.; VHCP Management III, LLC ("VHCPM3") is the general partner of VHCP3 and the manager of VHCP Co-3 and may be deemed to beneficially own the shares held by VHCP3 and VHCP Co-3. Bong Koh and Nimish Shah are the voting members of VHCPM3 and may be deemed to beneficially own these shares. Each of VHCPM3 and Messrs. Koh and Shah expressly disclaims beneficial ownership over these shares except to the extent of its or his indirect pecuniary interest therein.; VHCP Management EG, LLC ("VHCPMEG") is the general partner of VHCP EG and may be deemed to beneficially own the shares held by VHCP EG. Bong Koh and Nimish Shah are the voting members of VHCPMEG and may be deemed to beneficially own these shares. Each of VHCPMEG and Messrs. Koh and Shah expressly disclaims beneficial ownership over these shares except to the extent of its or his indirect pecuniary interest therein.