GLENBROOK CAPITAL MANAGEMENT
SEC Form 4 insider trading activity
GLENBROOK CAPITAL MANAGEMENT has filed 15 SEC Form 4 filings (36 transaction rows) across 1 company, with disclosures dating back to 2026. 15 of those filings fall inside the rolling window. Most recent filing: Oct 22, 2026.
On the most recent filing, GLENBROOK CAPITAL MANAGEMENT is listed as 10% Owner at SenesTech, Inc. Inside the rolling window, GLENBROOK CAPITAL MANAGEMENT reported 36 open-market purchases totaling $1.8M in SNES and no open-market sales. The largest disclosed transaction in the window is a purchase of 426,000 SNES shares on Oct 15, 2026, worth $327K.
Companies traded
Other insiders at SNES
Insider Buying
$1.8M
reported purchases (SEC code P)
Insider Selling
$0
reported sales (SEC code S)
Companies
1
in the rolling window
| Source | |||||||
|---|---|---|---|---|---|---|---|
| SNES | 10% Owner | Purchase | 36,375 | $25K | Oct 22 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 60,000 | $44K | Oct 22 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 7,500 | $6K | Oct 22 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 426,000 | $327K | Oct 19 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 181,252 | $114K | Oct 19 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 376,552 | $265K | Oct 19 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 15,000 | $19K | Aug 10 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 6,490 | $8K | Aug 10 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 35,000 | $52K | Jul 23 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 35,000 | $53K | Jul 2 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 3,990 | $6K | Jun 30 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 9,442 | $14K | Jun 30 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 6,812 | $11K | Jun 30 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 5,172 | $8K | Jun 30 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 3,264 | $5K | Jun 23 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 5,000 | $8K | Jun 23 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 8,230 | $14K | Jun 8 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 13,159 | $21K | Jun 8 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 7,000 | $11K | Jun 8 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 15,000 | $26K | May 19 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 7,120 | $12K | May 19 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 10,000 | $16K | May 19 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 3,000 | $4K | Apr 30 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 146,249 | $285K | Mar 17 | SEC ↗ | |
| SNES | 10% Owner | Purchase | 5,060 | $9K | Mar 17 | SEC ↗ |
Frequently asked questions
How many SEC Form 4 filings has GLENBROOK CAPITAL MANAGEMENT made?
GLENBROOK CAPITAL MANAGEMENT has filed 15 SEC Form 4 filings (36 transaction rows) across 1 company since 2026.
Which companies does GLENBROOK CAPITAL MANAGEMENT trade?
GLENBROOK CAPITAL MANAGEMENT has filed SEC Form 4 disclosures for 1 company, including SNES.
When was GLENBROOK CAPITAL MANAGEMENT's most recent SEC Form 4 filing?
GLENBROOK CAPITAL MANAGEMENT's most recent SEC Form 4 filing on Tracefour is dated Oct 22, 2026.
What is GLENBROOK CAPITAL MANAGEMENT's total buy and sell value in the current window?
Inside the rolling retention window, GLENBROOK CAPITAL MANAGEMENT bought $1.8M and sold $0 based on SEC Form 4 filings.
What was GLENBROOK CAPITAL MANAGEMENT's largest disclosed transaction?
The largest disclosed transaction in the current window is a purchase of 426,000 SNES shares on 2026-10-15, worth $327K, per SEC Form 4 filings.