** Shares of digital advertising company Taboola.com TBLA.O climb 8.1% to $4.00 before the bell

** Says increasing share buyback by up to $200 mln, bringing current total buyback to about $240 mln

** As of Dec. 31, 2024, TBLA had remaining authorization to buyback shares of up to $45.6 mln — annual filing

** Posts Q4 rev. of $491 mln vs estimate of $476.8 mln — data compiled from LSEG

** Up to Tuesday's close, stock had risen 1.4% YTD, after shedding ~13.1% in 2024

(Reporting by Rishi Kant in Bengaluru)

((Rishi.Kant@thomsonreuters.com))