Daily notes / October 19, 2026

Glenbrook reported 38.04% ownership of Senestech in Schedule 13D/A

Written by a model from the facts OQRO holds and checked against them, sentence by sentence of October 19, 2026. Published October 20, 2026. 2 min read.

Tall office buildings around Trinity Church in lower Manhattan seen from above, with the church spire between the towers. — Skyscrapers around Trinity Church, New York, 1905. Photo: Detroit Publishing Company (scan by the New York Public Library), Public domain (scan of a 1905 photograph, New York Public Library Digital Collections). Original

The short answer

GLENBROOK CAPITAL MANAGEMENT filed a Schedule 13D/A on Oct 19, 2026, reporting 2,063,098 shares, 38.04% of Senestech’s class. The filing was made on the day Finnhub listed a headline saying Glenbrook crossed 30% ownership. The filing reports ownership, not when the shares were bought.

What did Glenbrook file?

The SEC Schedule 13D is an amendment reporting GLENBROOK CAPITAL MANAGEMENT’s ownership in Senestech (SNES). It states that Glenbrook held 2,063,098 shares, 38.04% of the class.

A Schedule 13D or 13G is an ownership filing, not a trade record. This filing does not state when the shares were bought.

What else was filed around the same time?

Senestech filed a Form 8-K on Oct 15, 2026, with Item 2.02, which OQRO classifies as reporting the company’s results. The 13D/A was filed on Oct 19, 2026.

An 8-K item states what the company reported. It does not state what the results mean for the share price.

What headlines were listed around the filing?

Finnhub listed the Yahoo headline “GLENBROOK CROSSES 30% OWNERSHIP OF SENESTECH” on Oct 19, 2026. Another Yahoo headline listed that day was “SenesTech Reports 88% Reduction in Rat Activity in Chicago Pilot, Building on Record $1.1 Million Quarterly Revenue Milestone.”

Finnhub also listed the Yahoo headline “SenesTech Reports Record Preliminary Third Quarter Revenue Exceeding $1 Million, the Highest in Company History, with 40% Sequential Growth” on Oct 15, 2026. The headlines are listed as published by the outlets; OQRO has not checked them or summarized the articles.

How did SNES shares move around the filing?

SNES closed at $0.6992 on Oct 15, 2026, the last session on or before the filing date. From Sep 15, 2026 to Oct 15, 2026, the close moved from $0.8602 to $0.6992, a change of −18.7%. From Oct 15, 2026 to Oct 19, 2026, the close moved from $0.6992 to $0.70, a change of +0.1%.

These share-price moves are context only. The filing does not explain them, and other news can move a price. More public information about Senestech is available on OQRO.

What other ownership and trading records are on file?

FINRA short interest for SNES on the settlement date of Sep 30, 2026 was 27,380 shares, −10.59% on the previous report, or about 1 days of average volume.

In 13F filings for the quarter ended Jun 30, 2025, the largest positions that grew: none on record. The largest that shrank was Banque Transatlantique SA, which sold out. A 13F is a quarter-end snapshot with no trade date.

What this does not tell you?

The Schedule 13D/A does not state when shares were bought. The 8-K reports what the company reported, and the filing does not explain the share-price moves. The listed headlines are not verified or summarized here.

This describes public filings and records. It is not investment advice.

Sources

A model wrote this page from the facts OQRO holds; every number, date, name and link in it was checked against those facts before publication, and a text that failed the check was not published. It describes what was filed, not why, and it is not investment advice. How OQRO treats data