Glenbrook Capital discloses 11.4% SenesTech (SNES) ownership stake

Rhea-AI Filing Summary

Glenbrook Capital Management filed an amended Schedule 13G reporting beneficial ownership of 593,785 shares of SenesTech, Inc. common stock, equal to 11.4% of the class. This percentage is based on 5,223,015 shares outstanding as of November 7, 2025.

The shares are held through PFS Trust and Glenbrook Capital Management Inc. Employee Profit-Sharing Plan, for which Glenbrook serves as investment manager. The certification states the holdings were not acquired and are not held for the purpose or effect of changing or influencing control of SenesTech.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

SenesTech, Inc.

(Name of Issuer)

Common Stock, par value $0.001 per share

(Title of Class of Securities)

81720R604

(CUSIP Number)

01/29/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 81720R604

1

Names of Reporting Persons

GLENBROOK CAPITAL MANAGEMENT

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

NEVADA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 593,785.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 593,785.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

593,785.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

11.4 %

12

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13G

Item 1.
(a)	Name of issuer: SenesTech, Inc.
(b)	Address of issuer's principal executive offices: 13430 North Dysart Road, Suite 105, Surprise, AZ 85379
Item 2.
(a)	Name of person filing: This report on Schedule 13G is being filed by Glenbrook Capital Management, a Nevada corporation ("GCM" or the "Reporting Person"), with respect to the shares of common stock, par value $0.001 per share (the "Common Stock"), of SenesTech, Inc., a Delaware corporation (the "Issuer"). Grover T. Wickersham, the managing member of GCM, Richard Rudgley, and Robert W. Lishman serve on the investment committee of GCM, which serves as the investment manager to each of PFS Trust ("PFS Trust") and Glenbrook Capital Management Inc. Employee Profit-Sharing Plan, which hold the shares of Common Stock reported herein. The filing of this statement should not be construed as an admission that any of the foregoing persons or any Reporting Person is, for the purposes of Section 13 of the Securities Exchange Act of 1934, the beneficial owner of the securities reported herein.
(b)	Address or principal business office or, if none, residence: The address for the Reporting Person is 5396 Avenue 18 1/2, Chowchilla, CA 93610.
(c)	Citizenship: GCM is a Nevada corporation.
(d)	Title of class of securities: Common Stock, par value $0.001 per share
(e)	CUSIP No.: 81720R604
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: The information required by Item 4(a) is set forth in Row 9 of the cover page for the Reporting Person and is incorporated herein by reference. The percentage set forth in this Schedule 13G is calculated based upon an aggregate of 5,223,015 shares of Common Stock outstanding as of November 7, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2025, filed with the Securities and Exchange Commission on November 10, 2025.
(b)	Percent of class: 11.4%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: The information required by Item 4(c)(i) is set forth in Row 5 of the cover page for the Reporting Person and is incorporated herein by reference.
	(ii) Shared power to vote or to direct the vote: The information required by Item 4(c)(ii) is set forth in Row 6 of the cover page for the Reporting Person and is incorporated herein by reference.
	(iii) Sole power to dispose or to direct the disposition of: The information required by Item 4(c)(iii) is set forth in Row 7 of the cover page for the Reporting Person and is incorporated herein by reference.
	(iv) Shared power to dispose or to direct the disposition of: The information required by Item 4(c)(iv) is set forth in Row 8 of the cover page for the Reporting Person and is incorporated herein by reference.
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. See Item 2(a). PSF Trust has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, more than 5 percent of the outstanding shares of Common Stock.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

GLENBROOK CAPITAL MANAGEMENT

Signature:	/s/ John David Kessler
Name/Title:	John David Kessler, Director
Date:	02/02/2026

FAQ

What percentage of SenesTech (SNES) does Glenbrook Capital report owning?

Glenbrook Capital reports beneficial ownership of 11.4% of SenesTech’s common stock. This is based on 593,785 shares compared with 5,223,015 SenesTech shares outstanding as of November 7, 2025, as disclosed in the company’s Form 10-Q.

How many SenesTech (SNES) shares does Glenbrook Capital beneficially own in this Schedule 13G/A?

Glenbrook Capital reports beneficial ownership of 593,785 SenesTech common shares. These shares are held through PFS Trust and Glenbrook Capital Management Inc. Employee Profit-Sharing Plan, with Glenbrook acting as investment manager for these entities under the Schedule 13G/A filing.

What is the event date for Glenbrook Capital’s SenesTech (SNES) Schedule 13G/A?

The event date triggering this Schedule 13G/A is January 29, 2026. That date marks when the ownership position met the reporting requirements, leading Glenbrook Capital to update its beneficial ownership disclosure for SenesTech common stock.

Who signed the Glenbrook Capital Schedule 13G/A related to SenesTech (SNES)?

The filing is signed by John David Kessler, identified as a Director. He certified that the information in the statement is true, complete, and correct, signing and dating the document on February 2, 2026 on behalf of the reporting person.

Does Glenbrook Capital state any intent to influence control of SenesTech (SNES)?

The certification states the securities were not acquired and are not held for the purpose or effect of changing or influencing control of SenesTech. It also notes they are not held in connection with any transaction having that control-related purpose or effect.

Which entity is noted as having rights over more than 5% of SenesTech (SNES) shares?

Item 6 explains that PSF Trust has the right to receive, or direct the receipt of, dividends and sale proceeds for more than 5 percent of SenesTech’s outstanding common stock, in connection with the shares reported in this beneficial ownership statement.