EXHIBIT 4

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the Common Stock of the Issuer and further agree that this Joint Filing Agreement be included as an Exhibit to such joint filings.

Date: June 8, 2020

HERSHEY MANAGEMENT I, LLC
By:	/s/ Adam Hershey
Name:	Adam Hershey
Title:	Managing Member
HERSHEY STRATEGIC CAPITAL, LP
By:	Hershey Strategic Capital GP, LLC,
	Its General Partner
By:	/s/ Adam Hershey
Name:	Adam Hershey
Title:	Managing Member
HERSHEY STRATEGIC CAPITAL GP, LLC
By:	/s/ Adam Hershey
Name:	Adam Hershey
Title:	Managing Member
HERSHEY MANAGEMENT IV, LLC
By:	/s/ Adam Hershey
Name:	Adam Hershey
Title:	Managing Member
SHORE VENTURES III, LP
By:	Hershey Management IV, LLC,
	Its General Partner
By:	/s/ Adam Hershey
Name:	Adam Hershey
Title:	Managing Member
/s/ Adam Hershey
Adam Hershey