** Shares of South Korean e-commerce platform Coupang CPNG.N fall 1.2% to $26.62 premarket after CEO Park Dae-jun resigns
** Co uncovers a massive data leak in November affecting more than 33 million customers
** SoftBank-backed co says it "deeply apologizes for causing concerns to the public"
** Harold Rogers, chief administrative officer of its parent company in the U.S., to be interim CEO
** South Korea PM Kim Min-seok warned of stern action on Tuesday
** Up to last close, CPNG stock up 22.5% YTD
(Reporting by Utkarsh Tushar Hathi)
((utkarshtushar.hathi@thomsonreuters.com))