Feb 12 (Reuters) - Most stock markets in the Gulf eased in early trade on Thursday, pressured by lacklustre company earnings and investor unease over tensions between the United States and Iran.

U.S. President Donald Trump met Israeli Prime Minister Benjamin Netanyahu on Wednesday and later said they had not reached any "definitive" agreement regarding Iran, but emphasised that negotiations with Tehran would continue.

It came a day after Trump said he was considering deploying a second aircraft carrier to the Middle East if no deal is reached with Iran.

The persistent tensions in the region helped oil prices to extend their gains on Thursday.

On Thursday, Dubai's main share index .DFMGI eased 0.2%, with blue-chip developer Emaar Properties EMAR.DU losing 0.6% ahead of its earnings announcement.

National Cement Co NCC.DU slid 4.5%, despite reporting a rise in annual profit.

In Abu Dhabi, the index .FTFADGI was down 0.1%, hit by a 0.7% retreat in ADNOC Drilling ADNOCDRILL.AD following a drop in fourth-quarter profit.

The Qatari index .QSI lost 0.5%, with petrochemical maker Industries Qatar IQCD.QA declining 1.4% following an annual profit drop.

Saudi Arabia's benchmark index .TASI added 0.1%, with petrochemical maker Saudi Basic Industries Corp 2010.SE gaining 1.8% and oil giant Saudi Aramco 2222.SE rising 0.3%.