** Shares of oil and gas producer Kosmos Energy KOS.N rise ~1.6% to $3.19 in extended trading
** During the session, shares fell as much as 15%
** Company confirms being in preliminary talks to buy Tullow Oil TLW.L in an all-stock deal
** KOS has a deadline of 5 p.m. London time on Jan. 9, 2025, to decide whether to announce a firm intention to make an offer or to declare that it will not pursue the acquisition
** As of session close, stock is down 52.6% YTD
(Reporting by Seher Dareen in Bengaluru)
((Seher.Dareen@thomsonreuters.com;))