# EDGAR Filing Document

**Accession Number:** 0001680378
**File Stem:** 0000902664-25-005143
**Filing Date:** 2025-11
**Character Count:** 11669
**Document Hash:** 0ab8ac28e30ce6b9c8aabeef6b1bd6fb
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000902664-25-005143.hdr.sgml**: 20251124

**ACCESSION NUMBER**: 0000902664-25-005143

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251124

**DATE AS OF CHANGE**: 20251124

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** SenesTech, Inc.
- **CENTRAL INDEX KEY:** 0001680378
- **STANDARD INDUSTRIAL CLASSIFICATION:** AGRICULTURE CHEMICALS [2870]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 202079805
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-89860
- **FILM NUMBER:** 251512799

**BUSINESS ADDRESS:**
- **STREET 1:** 777 W. PINNACLE PEAK ROAD
- **STREET 2:** SUITE B104
- **CITY:** PHOENIX
- **STATE:** AZ
- **ZIP:** 85027
- **BUSINESS PHONE:** (928) 779 - 4143

**MAIL ADDRESS:**
- **STREET 1:** PO BOX 3627
- **CITY:** FLAGSTAFF
- **STATE:** AZ
- **ZIP:** 86003
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** GLENBROOK CAPITAL MANAGEMENT
- **CENTRAL INDEX KEY:** 0001273782

**ORGANIZATION NAME:**
- **EIN:** 860848410
- **STATE OF INCORPORATION:** NV
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G

**BUSINESS ADDRESS:**
- **STREET 1:** 430 CAMBRIDGE AVE STE 100
- **CITY:** PALO ALTO
- **STATE:** CA
- **ZIP:** 94306
- **BUSINESS PHONE:** 650-323-6400

**MAIL ADDRESS:**
- **STREET 1:** 430 CAMBRIDGE AVE STE 100
- **CITY:** PALO ALTO
- **STATE:** CA
- **ZIP:** 94306

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

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**Issuer:** SenesTech, Inc.

**Title of Class of Securities:** Common stock, par value $0.001 per share

**CUSIP Number:** 81720R604

**Date of Event Which Requires Filing of this Statement:** 09/30/2025

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

- [ ] Rule 13d-1(b)

- [x] Rule 13d-1(c)

- [ ] Rule 13d-1(d)

---

| 1. | Names of Reporting Persons<br>Glenbrook Capital Management | Names of Reporting Persons<br>Glenbrook Capital Management |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>NV | Citizenship or Place of Organization<br>NV |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>582244.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>582244.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>582244.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>582244.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>9.99% | Percent of Class Represented by Amount in Row (9)<br>9.99% |
| 12. | Type of Reporting Person (See Instructions)<br>CO | Type of Reporting Person (See Instructions)<br>CO |

**Comment for Type of Reporting Person:** Includes 90,000 shares of Common Stock (as defined in Item 2(a)) underlying a Warrant (as defined in Item 4) held by an entity managed by Glenbrook Capital Management, which contains a 9.99% Blocker (as defined in Item 4). The percentage set forth in row (11) gives effect to the 9.99% Blocker.  However, rows (6), (8) and (9) show the number of shares of Common Stock that would be issuable upon exercise of such Warrant in full and does not give effect to the 9.99% Blocker.  Therefore, the actual number of shares of Common Stock beneficially owned by the Reporting Person, after giving effect to the 9.99% Blocker, is less than the number of shares reported in rows (6), (8) and (9).

---

**Item 1(a). Name of Issuer:**
SenesTech, Inc.

**Item 1(b). Address of Issuer's Principal Executive Offices:**
3430 North Dysart Road, Suite 105, Surprise, Arizona 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 ("GCM EPSP"), which hold the shares of Common Stock and Warrants 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.

This Schedule 13G serves an amendment to the Schedule 13G previously filed by PFS Cap Mgt Co (CIK: 0002043507) on November 12, 2024, as subsequently amended on February 12, 2025, May 12, 2025, and August 12, 2025.  Going forward, the Reporting Person will report the beneficial ownership of PFS Trust.

**Item 2(b). Address of Principal Business Office:**
The address for the Reporting Person is 5396 Avenue 18 1/2, Chowchilla, CA 93610.

**Item 2(c). Citizenship:**
GCM is a Nevada corporation.

**Item 2(d). Title of Class of Securities:**
Common stock, par value $0.001 per share

**Item 2(e). CUSIP Number:**
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, subject to the 9.99% Blocker.
PFS Trust holds a Series I Common Stock Warrant of the Issuer (the "Warrants"), which contains a 9.99% beneficial ownership blocker (the "9.99% Blocker"), pursuant to which PFS Trust cannot exercise such Warrant to the extent the Reporting Person, PFS Trust or any of its or their affiliates, would beneficially own, after any such exercise, more than 9.99% of the outstanding Common Stock and the percentage set forth in Row 11 of the cover page for the Reporting Person gives effect to the 9.99% Blocker. Consequently, at this time, the Reporting Person (on behalf of PFS Trust) is not able to exercise all of the Warrants held by PFS Trust due to the 9.99% Blocker.
In addition, GCM EPSP holds a Warrant which contains a 4.99% beneficial ownership blocker (the "4.99% Blocker"), pursuant to which GCM EPSP cannot exercise such Warrant to the extent the Reporting Person, GCM EPSP or any of its or their affiliates, would beneficially own, after any such exercise, more than 4.99% of the outstanding Common Stock.  Consequently, due to the 4.99% Blocker, none of the Warrants held by GCM EPSP are exercisable at this time.

**(b) Percent of class:**

9.99%

**(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 Five Percent or Less of a Class.**

[x] If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following.

**Item 6. Ownership of More than 5 Percent on Behalf of Another Person.**

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**

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. Certification:**

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**

**Date:** 11/24/2025

**By:** /s/ John David Kessler

**Name & Title:** John David Kessler, Director