** Shares of drugmaker Catalyst Pharmaceuticals CPRX.O
rise ~13% to $16.48 premarket
** Co's Q4 revenue of $110.6 mln beats analysts' average
expectation of $105.9 mln - LSEG data
** Co says neuromuscular disorder drug Firdapse's Q4 net
product revenue rose 15% to $69.8 mln
** CPRX forecasts annual revenue between $455 mln and $475
mln, the midpoint of which is above analysts' average estimate
of $463.2 mln
** Up to last close, stock down 4.6% in the last 12 months
(Reporting by Christy Santhosh)
((Christy.Santhosh@thomsonreuters.com))