EXHIBIT 99.1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below (the “Parties”) agree to the joint filing on behalf of each of them of a Statement on Schedule 13D, dated September 25, 2017 (and including any further amendments thereto), with respect to the common stock, par value $0.001 per share, of Great Elm Capital Group, Inc., a Delaware corporation. This Joint Filing Agreement shall be filed as an Exhibit to the Statement on Schedule 13D, dated September 25, 2017, filed by the Parties.

Dated: September 25, 2017

NORTHERN RIGHT CAPITAL MANAGEMENT, L.P.
By: BC Advisors, LLC, its general partner
By:	/s/ Matthew A. Drapkin
	Name: Matthew A. Drapkin
	Title:   Managing Member
NORTHERN RIGHT CAPITAL (QP), L.P.
By: Northern Right Capital Management, L.P., its general partner
By: BC Advisors, LLC, its general partner
By:	/s/ Matthew A. Drapkin
	Name: Matthew A. Drapkin
	Title:   Managing Member
BC ADVISORS, LLC
By:	/s/ Matthew A. Drapkin
	Name: Matthew A. Drapkin
	Title:   Managing Member
/s/ Matthew A. Drapkin
Matthew A. Drapkin