What is Glenbrook Capital Management’s indirect SNES share position after these trades?

Following the reported purchases, the managed account held 1,079,294 shares of SenesTech common stock indirectly attributed to Glenbrook Capital Management, which disclaims beneficial ownership except for any pecuniary interest.

Glenbrook Capital Management (SNES) increases indirect stake with 21,490-share buy

Q: What insider transactions in SNES stock did Glenbrook Capital Management report?

Glenbrook Capital Management reported two open-market purchases of SenesTech common stock, totaling 21,490 shares on 2026-08-06 and 2026-08-07, held in an account it manages and reported as indirect ownership.

Q: How many SNES shares were bought on each date in this Form 4?

On 2026-08-06 , 15,000 SenesTech shares were purchased at $1.2962 per share. On 2026-08-07 , 6,490 shares were purchased at $1.2977 per share, all reported as indirect holdings through a managed account.

Q: Were the reported SNES trades under a Rule 10b5-1 plan?

No. The Form 4 shows the Rule 10b5-1 checkbox as not checked , indicating the reported SenesTech share purchases were not affirmed as made under a pre-arranged Rule 10b5-1 trading plan.

Filing Impact

(Neutral)

Filing Sentiment

(Positive)

Form Type

Rhea-AI Filing Summary

Glenbrook Capital Management, a more than ten percent owner of SenesTech, Inc., reported two open-market purchases of common stock held in an account it manages. On 2026-08-06 it purchased 15,000 shares at $1.2962 per share, and on 2026-08-07 it purchased 6,490 shares at $1.2977 per share. After these indirect purchases, the managed account held 1,079,294 SenesTech common shares. Glenbrook Capital Management serves as investment manager to the account and disclaims beneficial ownership except to the extent of its pecuniary interest. The transactions were not reported as made under a Rule 10b5-1 trading plan.

Insider Trade Summary

Net Buyer: 21,490 shares

Net Buy 2 txns

Insider GLENBROOK CAPITAL MANAGEMENT

Role 10% Owner

Bought 21,490 shs ($28K)

Type	Security	Shares	Price	Value
Purchase	Common Stock ^F1	6,490	$1.2977	$8K
Purchase	Common Stock, $0.001 par value per share ("Common Stock") ^F1	15,000	$1.2962	$19K

Holdings After Transaction: Common Stock, $0.001 par value per share ("Common Stock") — 1,072,804 shares (Indirect, See footnote); Common Stock — 1,079,294 shares (Indirect, See footnote)

Footnotes (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 2026-08-06: 15000 shares Price per share 2026-08-06: $1.2962 Shares purchased 2026-08-07: 6490 shares +3 more

6 metrics

Shares purchased 2026-08-06 15000 shares Open-market purchase of SenesTech common stock on 2026-08-06

Price per share 2026-08-06 $1.2962 Purchase price per share on 2026-08-06

Shares purchased 2026-08-07 6490 shares Open-market purchase of SenesTech common stock on 2026-08-07

Price per share 2026-08-07 $1.2977 Purchase price per share on 2026-08-07

Total shares after trades 1079294 shares Indirect SenesTech holdings in the managed account following the latest purchase

Net shares bought 21490 shares Aggregate of both reported open-market purchases

Key Terms

indirect ownership, pecuniary interest, investment manager, Section 16 of the Securities and Exchange Act of 1934

4 terms

indirect ownership financial

"The securities to which this filing relates are held directly by a certain account"

pecuniary interest financial

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

investment manager financial

"for which Glenbrook Capital Management serves as the investment manager"

Section 16 of the Securities and Exchange Act of 1934 regulatory

"disclaims beneficial ownership of the securities to which this filing relates for purposes of Section 16"

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/10/2026 - 06:56 PM Accepted by SEC EDGAR 08/10/2026 - 06:56 PM

FAQ

What insider transactions in SNES stock did Glenbrook Capital Management report?

Glenbrook Capital Management reported two open-market purchases of SenesTech common stock, totaling 21,490 shares on 2026-08-06 and 2026-08-07, held in an account it manages and reported as indirect ownership.

How many SNES shares were bought on each date in this Form 4?

On 2026-08-06, 15,000 SenesTech shares were purchased at $1.2962 per share. On 2026-08-07, 6,490 shares were purchased at $1.2977 per share, all reported as indirect holdings through a managed account.

Were the reported SNES trades under a Rule 10b5-1 plan?

No. The Form 4 shows the Rule 10b5-1 checkbox as not checked, indicating the reported SenesTech share purchases were not affirmed as made under a pre-arranged Rule 10b5-1 trading plan.

Does Glenbrook Capital Management have direct ownership of SNES shares?

The filing states the SNES securities are held by an account for which Glenbrook Capital Management is investment manager and that it disclaims beneficial ownership for Section 16 purposes, except to the extent of its pecuniary interest.

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)
08/06/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock, $0.001 par value per share ("Common Stock")	08/06/2026		P		15,000	A	$1.2962	1,072,804	I	See footnote⁽¹⁾
Common Stock	08/07/2026		P		6,490	A	$1.2977	1,079,294	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

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/ Robert W. Lishman, Director	08/10/2026
	** 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)

Source: View Original Filing on SEC EDGAR