Glenbrook entities add SenesTech (SNES) stake with 3,000-share open-market buy

Rhea-AI Filing Summary

Glenbrook Capital Management-related entities acquired additional SenesTech, Inc. shares in the open market. On the reported date, PFS Trust, the Glenbrook Capital Management Inc. Employee Profit-Sharing Plan, and various managed funds together purchased 3,000 shares of SenesTech common stock at $1.469 per share, bringing their indirect holdings reported in this filing to 893,635 shares. Glenbrook Capital Management, as investment manager, disclaims beneficial ownership beyond any pecuniary interest.

Insider Trade Summary

Net Buyer: 3,000 shares ($4,407)

Net Buy 1 txn

Insider GLENBROOK CAPITAL MANAGEMENT

Role null

Bought 3,000 shs ($4K)

Type	Security	Shares	Price	Value
Purchase	Common Stock, $0.001 par value per share	3,000	$1.469	$4K

Holdings After Transaction: Common Stock, $0.001 par value per share — 893,635 shares (Indirect, See footnote)

Footnotes (1)

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Key Figures

Shares purchased: 3,000 shares Purchase price: $1.469 per share Indirect holdings after transaction: 893,635 shares

3 metrics

Shares purchased 3,000 shares Open-market buy on the reported transaction date

Purchase price $1.469 per share Price for SenesTech common stock transaction

Indirect holdings after transaction 893,635 shares Total SenesTech common shares indirectly held after purchase

Key Terms

Employee Profit-Sharing Plan, pecuniary interest, Section 16

3 terms

Employee Profit-Sharing Plan financial

"Glenbrook Capital Management Inc. Employee Profit-Sharing Plan ("GCM EPSP")"

pecuniary interest financial

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

Section 16 regulatory

"for purposes of Section 16 of the Securities and Exchange Act of 1934"

Section 16 is a U.S. securities law rule that governs the trading and disclosure obligations of company insiders — typically officers, directors and large shareholders — to promote transparency and deter unfair profit-taking. It requires insiders to publicly report their stock trades and allows companies or the issuer to reclaim quick, short-term profits from certain insider trades, like a scoreboard and a refund policy that help investors see and limit possible insider advantage.

Form 4 Insider Transactions: What Each Field Means →

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)
04/28/2026

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	04/28/2026		P		3,000	A	$1.469	893,635	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 PFS Trust ("PFS Trust"), Glenbrook Capital Management Inc. Employee Profit-Sharing Plan ("GCM EPSP") and various funds and accounts managed by Glenbrook Capital Management (the "Reporting Person"), which also serves as the investment manager to each of PFS Trust and GCM EPSP. 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	04/30/2026
	** 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)

FAQ

What insider transaction did Glenbrook Capital Management report for SNES?

Glenbrook Capital Management-related entities reported buying 3,000 shares of SenesTech common stock. The purchase was an open-market transaction, increasing the indirect position reported in this filing to 893,635 shares held through trusts, a profit-sharing plan, and managed funds.

At what price were the SenesTech (SNES) shares purchased in this Form 4?

The reported purchase price was $1.469 per SenesTech common share. This reflects an open-market transaction by entities managed by Glenbrook Capital Management, rather than a grant or option exercise, and modestly adds to their existing indirect holdings disclosed in the filing.

Who actually holds the SNES shares reported in Glenbrook Capital Management’s Form 4?

The shares are held by PFS Trust, the Glenbrook Capital Management Inc. Employee Profit-Sharing Plan, and various managed funds. Glenbrook Capital Management acts as investment manager to these entities and disclaims beneficial ownership except to the extent of any pecuniary interest it may have.

How many SenesTech (SNES) shares are indirectly held after this reported purchase?

After the reported transaction, entities associated with Glenbrook Capital Management indirectly hold 893,635 SenesTech common shares. This figure represents the combined holdings of PFS Trust, the employee profit-sharing plan, and various managed funds as disclosed in the Form 4 filing.

Does Glenbrook Capital Management claim full beneficial ownership of the reported SNES shares?

No. Glenbrook Capital Management expressly disclaims beneficial ownership of the reported SenesTech shares for Section 16 purposes, except for any pecuniary interest. The securities are directly owned by PFS Trust, the employee profit-sharing plan, and various managed funds it oversees.