Glenbrook Capital Management Acquires 15,000 Shares of Senestech (NASDAQ:SNES) Stock

Posted by Caroline Horne on May 20th, 2026

Senestech, Inc. (NASDAQ:SNES – Get Free Report) major shareholder Glenbrook Capital Management acquired 15,000 shares of the firm’s stock in a transaction that occurred on Thursday, May 14th. The stock was bought at an average cost of $1.72 per share, with a total value of $25,800.00. Following the completion of the transaction, the insider directly owned 908,635 shares in the company, valued at $1,562,852.20. The trade was a 1.68% increase in their ownership of the stock. The purchase was disclosed in a legal filing with the Securities & Exchange Commission, which can be accessed through this hyperlink. Large shareholders that own more than 10% of a company’s shares are required to disclose their transactions with the SEC.

Glenbrook Capital Management also recently made the following trade(s):

On Monday, May 18th, Glenbrook Capital Management acquired 10,000 shares of Senestech stock. The stock was bought at an average cost of $1.59 per share, with a total value of $15,900.00.
On Friday, May 15th, Glenbrook Capital Management acquired 7,120 shares of Senestech stock. The stock was bought at an average cost of $1.65 per share, with a total value of $11,748.00.
On Tuesday, April 28th, Glenbrook Capital Management acquired 3,000 shares of Senestech stock. The stock was bought at an average cost of $1.47 per share, with a total value of $4,410.00.
On Tuesday, March 17th, Glenbrook Capital Management acquired 19,725 shares of Senestech stock. The stock was bought at an average cost of $1.79 per share, with a total value of $35,307.75.
On Monday, March 16th, Glenbrook Capital Management acquired 5,060 shares of Senestech stock. The stock was bought at an average cost of $1.86 per share, with a total value of $9,411.60.
On Friday, March 13th, Glenbrook Capital Management acquired 146,249 shares of Senestech stock. The stock was bought at an average cost of $1.95 per share, with a total value of $285,185.55.
On Thursday, February 19th, Glenbrook Capital Management acquired 34,613 shares of Senestech stock. The stock was bought at an average cost of $2.40 per share, with a total value of $83,071.20.
On Wednesday, February 18th, Glenbrook Capital Management acquired 10,481 shares of Senestech stock. The stock was bought at an average cost of $2.29 per share, with a total value of $24,001.49.
On Tuesday, February 17th, Glenbrook Capital Management purchased 40,807 shares of Senestech stock. The shares were acquired at an average cost of $2.29 per share, with a total value of $93,448.03.

Senestech Stock Performance

SNES opened at $1.53 on Wednesday. Senestech, Inc. has a 12-month low of $1.41 and a 12-month high of $6.24. The company has a current ratio of 8.91, a quick ratio of 7.79 and a debt-to-equity ratio of 0.02. The firm has a market capitalization of $8.11 million, a PE ratio of -0.81 and a beta of 0.18. The firm has a 50 day moving average of $1.69 and a two-hundred day moving average of $2.15.

Senestech (NASDAQ:SNES – Get Free Report) last posted its quarterly earnings results on Tuesday, May 12th. The company reported ($0.31) earnings per share (EPS) for the quarter, topping analysts’ consensus estimates of ($0.33) by $0.02. Senestech had a negative net margin of 304.22% and a negative return on equity of 67.60%. The company had revenue of $0.49 million during the quarter, compared to analyst estimates of $0.63 million. On average, analysts anticipate that Senestech, Inc. will post -1.61 EPS for the current year.

Analyst Upgrades and Downgrades

Separately, Weiss Ratings reissued a “sell (e+)” rating on shares of Senestech in a research report on Friday, March 27th. One analyst has rated the stock with a Strong Buy rating, one has given a Hold rating and one has given a Sell rating to the company. According to MarketBeat, Senestech presently has an average rating of “Hold”.

View Our Latest Research Report on SNES

Institutional Investors Weigh In On Senestech

Hedge funds and other institutional investors have recently made changes to their positions in the company. Geode Capital Management LLC acquired a new stake in shares of Senestech during the 2nd quarter worth approximately $59,000. Jane Street Group LLC acquired a new stake in shares of Senestech during the 4th quarter worth approximately $32,000. Diversify Advisory Services LLC acquired a new stake in shares of Senestech during the 4th quarter worth approximately $34,000. Diversify Wealth Management LLC acquired a new stake in shares of Senestech during the 1st quarter worth approximately $31,000. Finally, XTX Topco Ltd acquired a new stake in shares of Senestech during the 4th quarter worth approximately $54,000. Institutional investors and hedge funds own 5.19% of the company’s stock.

Key Senestech News

Here are the key news stories impacting Senestech this week:

Positive Sentiment: Major shareholder Glenbrook Capital Management continued buying shares, including recent purchases at $1.59 to $1.72, while CEO Michael Edell also bought shares. Insider buying can signal confidence in Senestech’s outlook. Glenbrook Capital Management Acquires 7,120 Shares of Senestech (NASDAQ:SNES) Stock
Positive Sentiment: Senestech announced it will participate in the Lytham Partners Spring 2026 Investor Conference on May 28, which could help increase investor visibility and potentially generate interest in the stock. SenesTech to Participate in the Lytham Partners Spring 2026 Investor Conference on May 28, 2026
Neutral Sentiment: The company’s latest quarterly report showed a smaller-than-expected loss of $(0.31) per share, but revenue came in below estimates at $0.49 million, leaving the operating trend weak despite the EPS beat.
Negative Sentiment: HC Wainwright lowered near-term earnings estimates for Senestech, including Q2 2026, Q3 2026, and Q4 2026, reflecting weaker expectations for profitability in the coming quarters.
Negative Sentiment: The analyst firm also raised its loss forecasts for FY2026, FY2027, and FY2028, which may reinforce concerns about Senestech’s path to sustained earnings improvement.

Senestech Company Profile

(Get Free Report)

SenesTech, Inc (NASDAQ: SNES) is a biotechnology company specializing in non-lethal pest management solutions. The company’s core focus is the development and commercialization of fertility-based control methods for commensal rodents, providing an alternative to traditional rodenticides. By targeting the reproductive cycle of rats, SenesTech aims to reduce rodent populations over time without the use of toxic chemicals, offering a more sustainable approach for pest management professionals.

The company’s flagship product, ContraPest®, is an EPA-registered liquid bait that disrupts rodent reproduction.