GLENBROOK CAPITAL MANAGEMENT - 20 Oct 2026 Form 4 Insider Report for SenesTech, Inc. (SNES)

Reporting relationship: 10%+ Owner
Issuer ticker: SNES
Reported as of: 20 Oct 2026
Net transaction value: +$74,838
SEC form: 4
Accepted by SEC: 22 Oct 2026, 18:45:11 UTC
Prior SEC filing: 19 Oct 2026
Next SEC filing: 30 Oct 2026
Source filing: View source filing
Reporting owner signature: Glenbrook Capital Management, By: /s/ Robert W. Lishman, Director

Filing notes and source

Key filing fact

GLENBROOK CAPITAL MANAGEMENT filed Form 4 for SenesTech, Inc. (SNES) on 22 Oct 2026.

Key facts

This page summarizes GLENBROOK CAPITAL MANAGEMENT's Form 4 filing for SenesTech, Inc. (SNES).
3 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 22 Oct 2026, 18:45.

Change

Previous filing in this sequence was filed on 19 Oct 2026.
Current net transaction value: +$74,838.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001273782 Primary reporting owner

GLENBROOK CAPITAL MANAGEMENT

Relationship: 10%+ Owner
Address: 2207, SUITE B, BELLANCA ST., MINDEN
Signature: Glenbrook Capital Management, By: /s/ Robert W. Lishman, Director
Signature date: 22 Oct 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SNES transaction

Common Stock, $0.001 par value per share ("Common Stock")

Purchase

Transaction value: $24,539
Shares: +36,375
Change %: +1.8%
Price: $0.6746
Shares after: 2,099,473
Date: 20 Oct 2026
Ownership: See footnote
Footnotes: F1, F2

SNES transaction

Common Stock

Purchase

Transaction value: $44,310
Shares: +60,000
Change %: +2.9%
Price: $0.7385
Shares after: 2,159,473
Date: 21 Oct 2026
Ownership: See footnote
Footnotes: F2, F3

SNES transaction

Common Stock

Purchase

Transaction value: $5,990
Shares: +7,500
Change %: +0.35%
Price: $0.7986
Shares after: 2,166,973
Date: 22 Oct 2026
Ownership: See footnote
Footnotes: F2, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $0.6613 to $0.6933, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth herein.

Footnote F2

The securities to which this filing relates are held directly by certain accounts 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 Exchange Act of 1934, as amended, except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose.

Footnote F3

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $0.7227 to $0.7564, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth herein.

Footnote F4

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $0.7877 to $0.8095, Inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth herein.