Common use of PLEASE ANSWER ALL QUESTIONS Clause in Contracts

PLEASE ANSWER ALL QUESTIONS. If the appropriate answer is “None” or “Not Applicable”, so state. Please print or type your answers to all questions. Attach additional sheets if necessary to complete your answers to any item. Your answers will be kept strictly confidential at all times. However, MabVax Therapeutics Holdings, Inc. (collectively, the “Company”) may present this Questionnaire to such parties as it deems appropriate in order to assure itself that the offer and sale of securities of the Company will not result in a violation of the registration provisions of the Securities Act of 1933, as amended, or a violation of the securities laws of any state.

PLEASE ANSWER ALL QUESTIONS. If the appropriate answer is “None” or “Not Applicable”, so state. Please print or type your answers to all questions. Attach additional sheets if necessary to complete your answers to any item. Your answers will be kept strictly confidential at all times. However, MabVax Therapeutics HoldingsOxysure Systems, Inc. (collectively, the “Company”) may present this Questionnaire to such parties as it deems appropriate in order to assure itself that the offer and sale of securities of the Company will not result in a violation of the registration provisions of the Securities Act of 1933, as amended, or a violation of the securities laws of any state.

PLEASE ANSWER ALL QUESTIONS. If the appropriate answer is “"None” " or “"Not Applicable”, ," so state. Please print or type your answers to all questions. Attach additional sheets if necessary to complete your answers to any itemanyitem. Your answers will be kept strictly confidential at all times. However, MabVax Therapeutics Holdings, Inc. (collectively; however, the “Company”) Company may present this Questionnaire to such parties as it deems appropriate in order to assure itself that the offer and sale of securities of the Company Shares will not result in a violation of the registration provisions of the Securities Act of 1933, as amendedamended (the "Act"), or a violation of the securities laws of any state.