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Insider Trading March 17, 2026

Glenbrook Capital Increases Stake in SenesTech with $330,181 Purchase

Ten percent holder buys additional SNES shares across three transactions as company reports revenue growth but remains unprofitable on a GAAP basis

By Hana Yamamoto SNES
Glenbrook Capital Increases Stake in SenesTech with $330,181 Purchase
SNES

Glenbrook Capital Management, which holds a 10% stake in SenesTech, acquired additional common shares totaling $330,181 across three purchases in mid-March 2026. The buys raise Glenbrook’s direct and indirect ownership to 890,635 shares as SenesTech reports revenue growth for fiscal 2025 but continues to operate at a GAAP loss. The stock is trading below the recent purchase prices and is down sharply over six months.

Key Points

  • Glenbrook Capital, a 10% holder of SenesTech, executed three purchases totaling $330,181 and now holds 890,635 shares - impacts equity investors and micro-cap market dynamics.
  • SenesTech reported fiscal 2025 revenue of $2.2 million, a 20% year-over-year increase, driven by expansion in e-commerce and municipal markets - relevant to companies operating in e-commerce and municipal contracting.
  • The stock was trading at $1.77, below Glenbrook’s purchase prices, and has dropped about 62% over six months, underscoring volatility in small-cap equities.

Overview

Glenbrook Capital Management, a 10% owner of SenesTech, Inc. (NASDAQ: SNES), has added to its position in the company through three separate purchases of common stock reported in a Form 4 filing with the Securities and Exchange Commission.

Transaction details

The filing discloses three purchases that together total $330,181, with per-share prices ranging from $1.79 to $1.95. The transactions are dated in mid-March 2026 and break down as follows:

  • March 13, 2026 - 146,249 shares acquired at $1.9517 per share
  • March 16, 2026 - 5,060 shares acquired at $1.8562 per share
  • March 17, 2026 - 19,725 shares acquired at $1.7924 per share

After these purchases, Glenbrook Capital Management directly and indirectly owns 890,635 shares of SenesTech.

Market context

At the time of the report, SenesTech's shares were trading at $1.77, below the range of prices Glenbrook paid. The stock has declined roughly 62% over the prior six months. The company is classified as a micro-cap with a market capitalization of $9.33 million.

Financial performance and strategic focus

SenesTech reported a 20% year-over-year increase in revenue for fiscal 2025, bringing total revenue to $2.2 million. Despite the top-line growth, the company remains unprofitable on a GAAP basis. Management has attributed the revenue increase to efforts expanding the company’s presence in e-commerce channels and municipal markets.

Analysts have noted SenesTech’s initiatives to drive growth, though the company has not yet reached GAAP profitability. These developments have drawn investor attention and have coincided with recent trading activity in the stock.

Research note

InvestingPro analysis indicates the stock may be undervalued. Investors interested in additional detail are directed to the InvestingPro Pro Research Report for SNES and other equities covered by the service.

Summary takeaway

Glenbrook Capital’s mid-March purchases increase its stake in SenesTech by bringing total holdings to 890,635 shares. The company delivered revenue growth in fiscal 2025 while remaining GAAP-loss-making, and the share price currently trades below the acquisition prices and well below its level six months prior.

Risks

  • SenesTech remains unprofitable on a GAAP basis, presenting execution and profitability risk for shareholders - affects investors focused on corporate earnings and valuation.
  • The company’s micro-cap status and $9.33 million market capitalization imply potential liquidity and price volatility risks - relevant to small-cap equity markets and risk-averse portfolios.
  • The share price has declined roughly 62% over six months, which highlights market risk and the possibility of continued downside absent improved financial performance.

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