Exhibit II

to

Schedule 13G

Joint Filing Agreement

The undersigned persons agree and consent to the joint filing on their behalf of this Schedule 13G dated February 12, 2014 in connection with their beneficial ownership of New Mountain Finance Corp. Columbia Management Investment Advisers, LLC authorizes Ameriprise Financial, Inc. to execute the Schedule 13G to which this Exhibit is attached and make any necessary amendments thereto.

 

Ameriprise Financial, Inc.  
By:   /s/ Martha Skinner  
  Martha Skinner
  Director – Fund Administration – Financial Reporting

 

Columbia Management Investment Advisers, LLC
By:   /s/ Amy Johnson  
  Amy Johnson
  Chief Operating Officer