Insiders who reported open-market trades in the last 12 months at the companies GLENBROOK CAPITAL MANAGEMENT files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
Michael Edell - $13K in SNES purchases and sales in the last 12 months
Jacob Steven Leach - $168 in SNES purchases and sales in the last 12 months
Matthew K. Szot - $3 in SNES purchases and sales in the last 12 months
More insiders (A-Z)
Browse nearby insider profiles in alphabetical order.
GLENBROOK CAPITAL MANAGEMENT is an investment firm, tracked as 10% Owner of SenesTech, Inc. (SNES). InsiderAlpha holds 13 primary Form 4 filings for it, the earliest from 2026, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has GLENBROOK CAPITAL MANAGEMENT submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has GLENBROOK CAPITAL MANAGEMENT been buying or selling stock?
Recorded transactions: 30 open-market purchases ($986K) and 0 open-market sales across all tracked filings.
GLENBROOK CAPITAL MANAGEMENT is 10% Owner of SenesTech, Inc. (SNES). 13 SEC Form 4 filings on record, most recently on 10 August 2026. Most recent open-market trade: bought $8K of SNES on 10 August 2026. Lifetime open-market purchases: $986K.
Recent transactions
20
The latest 20 SEC Form 4 transactions reported by GLENBROOK CAPITAL MANAGEMENT.
InsiderAlpha's records for GLENBROOK CAPITAL MANAGEMENT go back to 2026: 13 primary Form 4 filings, an average of 13.0 per year. The typical open-market purchase is $33K (30 buys totaling $986K). The largest single buy on record is $285K of SNES in 2026. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
