X0206 3 2014-03-13 0 0001433714 CASTLIGHT HEALTH, INC. CSLT 0001240366 SINGER DAVID B C/O CASTLIGHT HEALTH, INC. TWO RINCON CENTER, 121 SPEAR STREET, SUI SAN FRANCISCO CA 94105 1 0 0 0 Director Stock Option (right to buy) 16 2024-03-12 Class B Common Stock 25000 D The stock option vests in 12 equal monthly installments beginning one month after the vesting commencement date, until such time as the option is 100% vested, subject to the continuing service of the Reporting Person on each vesting date. This stock option is held by David B. Singer for the benefit of Maverick Fund, L.D.C., Maverick Fund USA, Ltd. and Maverick Fund II, Ltd. Mr. Singer is an employee of an affiliate of Maverick Capital, Ltd. /s/ Charles Ott, by power of attorney 2014-03-13