SenesTech, Inc.: 10% owner Glenbrook Capital Management bought 983,804 shares

What happened Glenbrook Capital Management, identified as a 10% owner, purchased a total of 983,804 shares of SenesTech, Inc. in open-market or private purchases: 426,000 shares at a weighted average price of $0.77 on Oct 15, 2026 for $327,125; 181,252 shares at a weighted average price of $0.63 on Oct 16, 2026 for $113,989; and 376,552 shares at a weighted average price of $0.70 on Oct 19, 2026 for $264,942.

Key details

• Transaction dates and reported weighted average prices: Oct 15, 2026 at $0.77 (426,000 shares, $327,125); Oct 16, 2026 at $0.63 (181,252 shares, $113,989); Oct 19, 2026 at $0.70 (376,552 shares, $264,942).
• Shares owned after the transactions: not stated in the filing.
• Footnotes: prices reported are weighted averages; Oct 15 purchases were at prices ranging from $0.6331 to $0.8906 (F1), Oct 16 purchases ranged $0.5629 to $0.6582 (F3), Oct 19 purchases ranged $0.6335 to $0.7482 (F4). The securities are held directly by accounts for which Glenbrook serves as investment manager and Glenbrook disclaims beneficial ownership except to the extent of any pecuniary interest (F2).
• Filing date: filed on Oct 19, 2026.

Why it may matter The filing reports purchases by a 10% owner (a large holder, not an executive). The filing does not show why the insider traded or why the company acted.