X0609 4 2026-10-15 0 0001680378 SenesTech, Inc. SNES 0001273782 GLENBROOK CAPITAL MANAGEMENT false 2207, SUITE B, BELLANCA ST. MINDEN NV 89423 0 0 1 0 0 Common Stock, $0.001 par value per share ("Common Stock") 2026-10-15 4 P 0 426000 0.7679 A 1505294 I See footnote Common Stock 2026-10-16 4 P 0 181252 0.6289 A 1686546 I See footnote Common Stock 2026-10-19 4 P 0 376552 0.7036 A 2063098 I See footnote The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $0.6331 to $0.8906, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth herein. The securities to which this filing relates are held directly by certain accounts for which Glenbrook Capital Management (the "Reporting Person") serves as the investment manager. The Reporting Person disclaims beneficial ownership of the securities to which this filing relates for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $0.5629 to $0.6582, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth herein. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $ $0.6335 to $0.7482, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth herein. Glenbrook Capital Management, By: /s/ Robert W. Lishman, Director 2026-10-19