13D Filing: Edenbrook Capital, LLC and Marchex Inc (MCHX)

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Exhibit A

AGREEMENT

The undersigned agree that
this amendment to Schedule 13D, dated November 7, 2017, relating to the Class B Common Stock, par value $0.01 of Marchex, Inc.
shall be filed on behalf of the undersigned.

November 7, 2017
(Date)
Edenbrook Capital, LLC
By: /s/ Jonathan Brolin

Jonathan Brolin, Managing Member

Edenbrook Long Only Value Fund, LP
By: /s/ Jonathan Brolin
Managing Member of Edenbrook
Capital Partners, LLC
/s/ Jonathan Brolin
Jonathan Brolin

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