Nasdaq CEO Robert Greifeld isn’t going down without a fight.

The exchange boss yesterday sweetened the terms of his firm’s $11.3 billion offer to lure the New York Stock Exchange into a merger deal away from Germany’s Deutsche Boerse.

Nasdaq OMX, along with its partner, Intercontinen-

talExchange, dangled an additional $700 million in front of NYSE Euronext shareholders to ditch its deal with Deutsche Boerse.

First Nasdaq and ICE promised to fund the $356 million the NYSE would pay Deutsche Boerse as a break-up fee should the Big Board walk away from its deal with the German exchange.

Second, Nasdaq and its partner said they would pay $350 million to the NYSE if the Nasdaq merger didn’t pass muster with regulators.

Nasdaq and ICE’s new proposal is at a more than 20 percent premium to Deutsche Boerse’s roughly $10 billion offer. mdecambre@nypost.com