GLENBROOK CAPITAL MANAGEMENT 4

What Happened

• Glenbrook Capital Management, reported as a 10% owner and investment manager, made three purchases of SenesTech (SNES) common stock (code P — purchase) on March 13, 16 and 17, 2026. The buys totaled 171,034 shares for about $330,181, indicating net insider buying rather than selling.
• Transactions: 146,249 shares @ $1.95 on 2026-03-13 ($285,434); 5,060 shares @ $1.86 on 2026-03-16 ($9,392); 19,725 shares @ $1.79 on 2026-03-17 ($35,355).

Key Details

• Transaction dates/prices/amounts:
  • 2026-03-13: 146,249 shares @ $1.95 = $285,434
  • 2026-03-16: 5,060 shares @ $1.86 = $9,392
  • 2026-03-17: 19,725 shares @ $1.79 = $35,355
• Total acquired: 171,034 shares for ~$330,181.
• Shares owned after transaction: The filing includes a correction to prior reported ownership (see footnote); the Form 4 corrects a prior understatement of 15,390 shares. Refer to the filed Form 4 for the exact post-transaction beneficial ownership number.
• Footnotes of note:
  • F1: Corrects a prior understatement of 15,390 shares reported in a Feb 19, 2026 Form 4; this filing updates the post-transaction ownership accordingly.
  • F2: The securities are held directly by PFS Trust and the Glenbrook Capital Management Employee Profit-Sharing Plan; Glenbrook serves as investment manager and disclaims beneficial ownership except to the extent of any pecuniary interest.
• Filing date: Form 4 filed March 17, 2026, reporting transactions on March 13, 16 and 17, 2026.

Context

• This is institutional/10% owner activity (Glenbrook acts as investment manager for trust/plan accounts), not an individual executive. Institutional purchases can reflect manager-driven portfolio activity rather than personal insider sentiment.
• These were open-market/private purchases (code P). Purchases are generally viewed by retail investors as a potentially bullish signal, but they do not on their own reveal the manager’s motives.