GLENBROOK CAPITAL MANAGEMENT
GLENBROOK CAPITAL MANAGEMENT has made 3 open-market purchases worth $810k since Oct 19, 2026, in 1 company. The latest: $29k of SNES, filed Oct 31, 2026, scored 0 out of 100.
10% owner, SenesTech, Inc.
Follow GLENBROOK CAPITAL MANAGEMENT, freeOpen the live feed
A free account gets an alert the minute a new buy or sale is filed.
Purchases
| Filed | Stock | Stake | Score | Bought | 1 week | 1 month |
|---|---|---|---|---|---|---|
| Oct 31 Form 4 (opens sec.gov) |
SNESSenesTech, Inc. · 10% owner10% owner · Near 52-week low · Penny stock: hard to trade | +1% stake | 0 | $29k 30,000 at $0.97 |
waiting | waiting |
| Oct 22 Form 4 (opens sec.gov) |
SNESSenesTech, Inc. · 10% owner10% owner · Near 52-week low · Penny stock: hard to trade | +5% stake | 2 | $75k 103,875 at $0.72 |
+28.6% | waiting |
| Oct 19 Form 4 (opens sec.gov) |
SNESSenesTech, Inc. · 10% owner10% owner · Near 52-week low · Penny stock: hard to trade | +91% stake | 23 | $706k 983,804 at $0.72 |
+21.4% | waiting |
Track record (hypothetical): a week after the filing, these buys averaged +25.0% (100% up, 2 measured).
Questions
What stock has GLENBROOK CAPITAL MANAGEMENT bought?
SNES (SenesTech, Inc.), all on the open market and reported on SEC Form 4.
When did GLENBROOK CAPITAL MANAGEMENT last buy?
Oct 31, 2026: 30,000 shares of SNES at $0.97, $29k in all (Form 4 (opens sec.gov)).
Has GLENBROOK CAPITAL MANAGEMENT filed a notice of a planned sale?
Not in the filings on record. A Form 144 is the notice an insider must file before selling restricted or control shares, and it lands on EDGAR before the sale is reported.
Is GLENBROOK CAPITAL MANAGEMENT a routine or an opportunistic buyer?
There isn't enough history to say yet.
Data as of Oct 31, 2026, from SEC EDGAR Form 4 filings: open-market purchases (code P) of $25,000 or more, and open-market sales. Every row links to its filing. Scores summarise what a filing says (how the score works); outcomes are hypothetical, from the first close after the filing, and past results don't predict future ones. Disclaimer