AGREEMENT TO FILE JOINT SCHEDULE 13D

Exhibit 99.1

AGREEMENT TO FILE JOINT SCHEDULE 13D

Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the undersigned hereby consent to the joint filing on their behalf of a single Schedule 13D and any amendments thereto, with respect to the beneficial ownership by each of the undersigned of shares of the common stock of MabVax Therapeutics Holdings, Inc., a Delaware corporation. The undersigned hereby further agree that this statement may be executed in any number of counterparts, each of which when so executed shall be deemed to be an original, but all of which counterparts shall together constitute one and the same instrument.

Dated: February 15, 2018		/s/ Xxxxx Xxxxx
		Xxxxx Xxxxx
Dated: February 15, 2018	GRQ CONSULTANTS, INC. XXXX 401K FBO XXXXX XXXXX
	By:	/s/ Xxxxx Xxxxx
		Xxxxx Xxxxx, Trustee
Dated: February 15, 2018	Xxxxx & Xxxxx Xxxxx Charitable Foundation, Inc.
	By:	/s/ Xxxxx Xxxxx
		Xxxxx Xxxxx, President

Dated: February 15, 2018	GRQ CONSULTANTS, INC. XXXX 401K FBO XXXXX XXXXX
	By:	/s/ Xxxxx Xxxxx
		Xxxxx Xxxxx, Trustee