Glenbrook Capital Management Insider Trading Activity
Glenbrook Capital Management, an institutional filer, recorded 17 transactions over the last 12 months across 1 company totaling $755K.
Activity concentrated in SNES with 17 filings. The largest single transaction was a purchase of SNES for $285K on Mar 13, 2026.
Performance Scorecard
Forward stock performance after each transaction by Glenbrook Capital Management. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.
| PERIOD | AVG BUY RETURN | AVG SELL AVOIDED | SUCCESS RATE | TRADES |
|---|---|---|---|---|
| 30 days | -0.8% | — | 50% | 14 |
| 90 days | -18.4% | — | 10% | 10 |
| 120 days | -12.5% | — | 0% | 4 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersSNES · SenesTech, Inc.
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| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | ROLE |
|---|---|---|---|---|---|---|
| May 18, 2026 | SNES | Buy | 10,000 | $1.59 | $16K | 10%+ Owner |
| May 15, 2026 | SNES | Buy | 7,120 | $1.65 | $12K | 10%+ Owner |
| May 14, 2026 | SNES | Buy | 15,000 | $1.72 | $26K | 10%+ Owner |
| Apr 28, 2026 | SNES | Buy | 3,000 | $1.47 | $4K | 10%+ Owner |
| Mar 17, 2026 | SNES | Buy | 19,725 | $1.79 | $35K | 10%+ Owner |
| Mar 16, 2026 | SNES | Buy | 5,060 | $1.86 | $9K | 10%+ Owner |
| Mar 13, 2026 | SNES | Buy | 146,249 | $1.95 | $285K | 10%+ Owner |
| Feb 19, 2026 | SNES | Buy | 34,613 | $2.40 | $83K | 10%+ Owner |
| Feb 18, 2026 | SNES | Buy | 10,481 | $2.29 | $24K | 10%+ Owner |
| Feb 17, 2026 | SNES | Buy | 40,807 | $2.29 | $93K | 10%+ Owner |
| Feb 13, 2026 | SNES | Buy | 15,390 | $1.89 | $29K | 10%+ Owner |
| Feb 12, 2026 | SNES | Buy | 7,956 | $1.72 | $14K | 10%+ Owner |
| Feb 11, 2026 | SNES | Buy | 8,000 | $1.73 | $14K | 10%+ Owner |
| Feb 5, 2026 | SNES | Buy | 2,884 | $1.77 | $5K | 10%+ Owner |
| Feb 4, 2026 | SNES | Buy | 5,685 | $1.82 | $10K | 10%+ Owner |
| Feb 2, 2026 | SNES | Buy | 42,739 | $1.98 | $84K | 10%+ Owner |
| Jan 30, 2026 | SNES | Buy | 5,399 | $1.87 | $10K | 10%+ Owner |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| SNES | SenesTech, Inc. | 17 | $755K |
Other insiders at SenesTech, Inc.
1 other tracked filer at SNES.