SenesTech (SNES) 10% Owner Management Buys $44K of Stock

By TradeTexts Research Desk Oct 22, 2026, 7:01 PM EDT

Key Points

Ten-percent owner Glenbrook Capital Management bought 60,000 shares of SenesTech, Inc. (SNES) at $0.74 per share on October 21, 2026, growing its stake roughly 2.9% to 2,159,473 shares.
Other institutional investors showed mixed moves, with Citadel Advisors Llc growing its holdings by 35,352 shares to end with 46,671 shares worth about $37,290.
SenesTech, Inc. recently traded around $0.80, with its next earnings report scheduled for November 9, 2026.

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Ten-percent owner Glenbrook Capital Management purchased 60,000 shares of SenesTech, Inc. (SNES) on October 21, 2026. According to a Form 4 filed with the SEC, the shares were bought at an average price of $0.74, totaling about $44,310. Following this purchase, the owner holds 2,159,473 shares, cutting its stake change to an ownership increase of roughly 2.9%. It is Glenbrook's fourth reported purchase of SenesTech stock in October.

SNES SenesTech, Inc.

$0.75 -66.06% year to date

Daily close · Oct 21, 2026

Insider trading track record

Glenbrook Capital Management vs. the S&P 500

YTD return -41.82% hypothetical

All-time return -41.84% S&P 500 +6.15%

vs. S&P 500 -47.99% behind the index

Hypothetical returns from Glenbrook Capital Management's disclosed trades, not real profit or advice. How we model this.

Inside Glenbrook Capital Management's SenesTech Trade

The transaction on October 21, 2026, added 60,000 shares to Glenbrook's holdings at $0.74 per share. This trade follows a string of recent buys by the ten-percent owner earlier in the month, including purchases on October 15, October 16, and October 19. After this latest acquisition, Glenbrook owns 2,159,473 shares of the specialty chemicals company.

Other Institutional Activity in SenesTech

Other institutional investors adjusted their positions in SenesTech around recent reporting periods. Sabby Management, LLC reduced its holdings by 76,767 shares, ending with 141,756 shares worth about $113,263. Renaissance Technologies, LLC shed 31,384 shares, leaving it with 82,616 shares valued at roughly $66,010. Citadel Advisors Llc grew its position by 35,352 shares, raising its stake 312.3% to end with 46,671 shares worth about $37,290. Essex Investment Management Co LLC held steady with 26,203 shares valued at about $20,936. Diversify Wealth Management, LLC also kept its position unchanged, holding 19,119 shares worth about $15,276.

SenesTech, Inc. Stock Up 6.5%

SenesTech shares recently traded around $0.80 as of October 22, 2026, sitting above the $0.75 close recorded on the transaction date of October 21, 2026.

Recent Earnings

SenesTech reported trailing-twelve-month revenue of $2.37 million alongside an EPS of -$1.22. The company's next earnings report is scheduled for November 9, 2026.

Insider Buying and Selling at SenesTech, Inc.

Chief Executive Officer Michael Edell bought 2,000 shares at $0.64 on September 28, 2026, for a total value of $1,289. Glenbrook Capital Management made multiple purchases earlier in October, including 426,000 shares on October 15, 181,252 shares on October 16, and 376,552 shares on October 19.

About SenesTech

SenesTech, Inc. is a specialty chemicals company based in Surprise, Arizona, that creates fertility control products to manage animal pest populations. Its offerings include ContraPest, a liquid bait, and Evolve, a soft bait designed to limit reproduction in rats.

Bottom Line

Investors will look to SenesTech's upcoming earnings report on November 9, 2026, for further updates on the company's financial progress. Future SEC filings will show whether major owners continue adjusting their stakes.