SCHEDULE 13D/A Filed 2026-10-22 Event 2026-10-21 SEC 0000902664-26-004256 →

GLENBROOK CAPITAL MANAGEMENT → SenesTech, Inc. SNES

Stake: 39.95% Shares: 2,166,973 CUSIP: 81720R604 Class: Common Stock, par value $0.001 per share

Composite Decision Signal · PASS (LOW BASE-RATE EDGE) Conviction Score: 22/100

Active Schedule 13D filer baseline
High conviction ownership stake (40.0%)

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)

7 transactions

7 buys · 0 sales · 0 awards/exercises

Issuer Cluster

4 13D/G filings on this issuer

3 other filings besides this one

Filer Track Record

3 filings by this filer

2 other filings in the data moat

Short Interest · settle 2026-09-30

DTC 1.00

27,380 shares short · -10.6% vs prior

Form 4 Insider Transactions · last 365d

Date	Insider	Role	Type	Shares	Price	Value
2026-10-22	GLENBROOK CAPITAL MANAGEMENT	10%+ owner	Buy	7,500	$0.80	$6K
2026-10-21	GLENBROOK CAPITAL MANAGEMENT	10%+ owner	Buy	60,000	$0.74	$44K
2026-10-20	GLENBROOK CAPITAL MANAGEMENT	10%+ owner	Buy	36,375	$0.67	$25K
2026-06-29	GLENBROOK CAPITAL MANAGEMENT	10%+ owner	Buy	5,172	$1.52	$8K
2026-06-26	GLENBROOK CAPITAL MANAGEMENT	10%+ owner	Buy	6,812	$1.56	$11K
2026-06-25	GLENBROOK CAPITAL MANAGEMENT	10%+ owner	Buy	9,442	$1.53	$14K
2026-06-24	GLENBROOK CAPITAL MANAGEMENT	10%+ owner	Buy	3,990	$1.55	$6K

Other 13D/G Filings on SenesTech, Inc.

Filed	Form	Filer	Stake	Shares
2026-10-19	SCHEDULE 13D/A	GLENBROOK CAPITAL MANAGEMENT	38.04%	2,063,098	view →
2026-07-23	SCHEDULE 13D	GLENBROOK CAPITAL MANAGEMENT	—	1,057,804	view →
2018-01-09	SC	SABBY MANAGEMENT, LLC	—	—	view →

Other Filings by GLENBROOK CAPITAL MANAGEMENT

Filed	Form	Issuer	Stake	Shares
2026-10-19	SCHEDULE 13D/A	SenesTech, Inc.	38.04%	2,063,098	view →
2026-07-23	SCHEDULE 13D	SenesTech, Inc.	—	1,057,804	view →

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