LeBeau Justin Michael → SenesTech, Inc. SNES

The Reporting Person acquired the shares of Common Stock reported herein for investment purposes because he believes the Common Stock is significantly undervalued relative to the Issuer's underlying product potential and market opportunity. The Reporting Person believes that, in order to unlock stockholder value, the Issuer's Board of Directors (the "Board") and management team should exercise greater capital discipline, reduce operating expenses, and better align management and Board compensation and incentives with the interests of common stockholders. In particular, the Reporting Person believes the Issuer should end its recurring practice of dilutive equity offerings, which he believes have eroded stockholder value. The Reporting Person has reviewed the public letter sent to the Chairman of the Board by Glenbrook Capital Management ("Glenbrook") on October 19, 2026, which was filed as Exhibit 99.1 to Glenbrook's Schedule 13D/A on that date. He agrees with certain of the views expressed in that letter, including those regarding minimizing equity dilution, exercising capital and expense discipline, aligning executive and Board compensation with stockholder performance through performance conditioned equity in lieu of cash compensation, and improving commercial and marketing execution. The Reporting Person is acting independently and has not entered into any agreement, arrangement, or understanding with Glenbrook or any other stockholder with respect to the Issuer or its securities. From time to time, the Reporting Person may engage in discussions with members of management, the Board, other stockholders of the Issuer, and other relevant parties regarding the Issuer's business, operations, expense structure, capital allocation, executive compensation, corporate governance, and future plans. Depending on various factors, including the Issuer's financial position and strategic direction, the outcome of any such discussions, the price of the Common Stock, conditions in the securities markets, and general economic and industry conditions, the Reporting Person may take such actions with respect to his investment in the Issuer as he deems appropriate, including, without limitation, purchasing additional shares of Common Stock, disposing of some or all of his shares, or formulating proposals or recommendations regarding the matters listed in subparagraphs (a) through (j) of Item 4 of Schedule 13D. Except as set forth herein, the Reporting Person has no present plan or proposal that would relate to or result in any of the matters set forth in subparagraphs (a) through (j) of Item 4 of Schedule 13D. The Reporting Person reserves the right to change his intentions and to take any action permitted by law.