** Donut company Krispy Kreme's shares down ~2% at $9.93 premarket after company reports cyber security incident

** Co says it was notified in November regarding unauthorized activity on a portion of its IT systems

** Adds operational disruptions are ongoing, including online ordering in parts of U.S.

** Also says cyber incident is likely to have material impact on co's operations

** DNUT does not expect long-term material impact from incident

** DNUT stock has fallen 33% YTD

(Reporting by Aamir Sohail in Bengaluru)

((Aamir.Sohail@thomsonreuters.com;))