Account linked to Glenbrook buys 35K SenesTech shares

SenesTech, Inc. reported an insider transaction involving an account managed by Glenbrook Capital Management, a ten percent owner.

Rhea-AI Filing Summary

SenesTech, Inc. reported an insider transaction involving an account managed by Glenbrook Capital Management, a ten percent owner. On June 30, 2026, the account made an open-market purchase of 35,000 shares of common stock at an average price of $1.5066 per share. Following this trade, the account indirectly holds 1,022,824 shares of SenesTech common stock. Glenbrook Capital Management serves as investment manager to the account and disclaims beneficial ownership of these securities except to the extent of its pecuniary interest, if any.

Insider Trade Summary

Net Buyer: 35,000 shares

Net Buy 1 txn

Insider GLENBROOK CAPITAL MANAGEMENT

Role 10% Owner

Bought 35,000 shs ($53K)

Type	Security	Shares	Price	Value
Purchase	Common Stock, $0.001 par value per share (Common Stock)	35,000	$1.5066	$53K

Holdings After Transaction: Common Stock, $0.001 par value per share (Common Stock) — 1,022,824 shares (Indirect, See footnote)

Footnotes (1)

1. F1. The securities to which this filing relates are held directly by a certain account for which Glenbrook Capital Management (the "Reporting Person") serves as the investment manager. The Reporting Person disclaims beneficial ownership of the securities to which this filing relates for purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except to the extent of its pecuniary interest therein, if any.

Key Figures

Shares purchased: 35,000 shares Purchase price: $1.5066 per share Shares held after transaction: 1,022,824 shares +1 more

4 metrics

Shares purchased 35,000 shares Open-market purchase on June 30, 2026

Purchase price $1.5066 per share Average price for the 35,000-share trade

Shares held after transaction 1,022,824 shares Indirect holdings following the purchase

Net buy shares 35,000 shares Net change in position from this Form 4

Key Terms

open-market purchase, ten percent owner, indirectly holds, pecuniary interest

4 terms

open-market purchase financial

"made an open-market purchase of 35,000 shares of common stock"

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

ten percent owner financial

"Glenbrook Capital Management, a ten percent owner"

indirectly holds financial

"the account indirectly holds 1,022,824 shares of SenesTech"

pecuniary interest financial

"except to the extent of its pecuniary interest therein, if any"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did SenesTech (SNES) disclose in this Form 4?

SenesTech disclosed an open-market purchase of 35,000 shares of common stock at $1.5066 per share by an account managed by Glenbrook Capital Management, a ten percent owner. This increased that account’s indirect holdings to 1,022,824 shares.

Who executed the recent SenesTech (SNES) share purchase?

The purchase was executed by an account for which Glenbrook Capital Management acts as investment manager. Glenbrook is the reporting person but states the securities are held by this account and disclaims beneficial ownership except for any pecuniary interest.

How many SenesTech (SNES) shares were bought and at what price?

The filing shows an open-market purchase of 35,000 SenesTech common shares at an average price of $1.5066 per share. This single transaction added to an existing indirect position managed by Glenbrook Capital Management.

What are the total SenesTech (SNES) holdings after Glenbrook’s reported trade?

After the reported transaction, the account managed by Glenbrook Capital Management indirectly holds 1,022,824 shares of SenesTech common stock. This figure represents the position immediately following the 35,000-share open-market purchase disclosed in the Form 4.

Does Glenbrook Capital Management claim full ownership of the SenesTech (SNES) shares?

No. Glenbrook Capital Management notes the shares are held by an account it manages and explicitly disclaims beneficial ownership for Section 16 purposes, except to the extent of its pecuniary interest in those securities, if any.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 07/02/2026 - 08:00 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

GLENBROOK CAPITAL MANAGEMENT

(Last) (First) (Middle)

5396 AVENUE 18 1/2

(Street)

CHOWCHILLA CALIFORNIA 93610

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
SenesTech, Inc. [ SNES ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/30/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, $0.001 par value per share (Common Stock)	06/30/2026		P		35,000	A	$1.5066	1,022,824	I	See footnote(1)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The securities to which this filing relates are held directly by a certain account for which Glenbrook Capital Management (the "Reporting Person") serves as the investment manager. The Reporting Person disclaims beneficial ownership of the securities to which this filing relates for purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except to the extent of its pecuniary interest therein, if any.

	Glenbrook Capital Management, By: /s/ John David Kessler, Director	07/02/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)