Yuma Energy 8-K Departure of Directors or Certain Officers

Exhibit 99.1

Richard W. Volk

833 Southridge Greens Blvd

Fort Collins, Colorado 80525

April 6, 2015

Yuma Energy, Inc.

Attention: Sam L. Banks

President and Chief Executive Officer

1177 West Loop South, Suite 1825

Houston, Texas 77027

Dear Mr. Banks:

Please be advised that I will not be standing for re-election to the Board of Directors of Yuma Energy, Inc. at its 2015 Annual Meeting of Shareholders. My decision to retire from the Board is due solely to personal reasons and is not due to any disagreement with the Company or any of its subsidiaries on any matters, including those related to their operations, policies or procedures.

Very truly yours,

/s/ Richard W. Volk

Richard W. Volk