GLENBROOK CAPITAL MANAGEMENT — SEC Form 4 filings
SEC reporting owner CIK 1273782. 13 Form 4 filings on record with FilingPulse; latest filed 2026-08-10.
Transaction summary — filings shown
Covers all 13 filings on record, filed 2026-02-03 to 2026-08-10. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): 30 legs across 13 filings — 533,667 shares, $985,747 total (shares × price as filed).
- Open-market sales (code S, non-derivative): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 0.
- Largest priced transaction: purchase of 146,249 shares @ $1.95 ($285,434) in SenesTech, Inc., filed 2026-03-17.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| SenesTech, Inc. (SNES) | 10% owner | 13 | 30 legs · 533,667 sh · $985,747 | — | — |
Form 4 filings — GLENBROOK CAPITAL MANAGEMENT
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-08-10 | 4 | SenesTech, Inc. (SNES) | Purchase (P): 15,000 @ $1.30 · Purchase (P): 6,490 @ $1.30 | EDGAR |
| 2026-07-22 | 4 | SenesTech, Inc. (SNES) | Purchase (P): 35,000 @ $1.47 | EDGAR |
| 2026-07-02 | 4 | SenesTech, Inc. (SNES) | Purchase (P): 35,000 @ $1.51 | EDGAR |
| 2026-06-29 | 4 | SenesTech, Inc. (SNES) | Purchase (P): 3,990 @ $1.55 · Purchase (P): 9,442 @ $1.53 · Purchase (P): 6,812 @ $1.56 · Purchase (P): 5,172 @ $1.52 | EDGAR |
| 2026-06-22 | 4 | SenesTech, Inc. (SNES) | Purchase (P): 3,264 @ $1.61 · Purchase (P): 5,000 @ $1.66 | EDGAR |
| 2026-06-08 | 4 | SenesTech, Inc. (SNES) | Purchase (P): 8,230 @ $1.65 · Purchase (P): 13,159 @ $1.57 · Purchase (P): 7,000 @ $1.61 | EDGAR |
| 2026-05-18 | 4 | SenesTech, Inc. (SNES) | Purchase (P): 15,000 @ $1.72 · Purchase (P): 7,120 @ $1.65 · Purchase (P): 10,000 @ $1.59 | EDGAR |
| 2026-04-30 | 4 | SenesTech, Inc. (SNES) | Purchase (P): 3,000 @ $1.47 | EDGAR |
| 2026-03-17 | 4 | SenesTech, Inc. (SNES) | Purchase (P): 146,249 @ $1.95 · Purchase (P): 5,060 @ $1.86 · Purchase (P): 19,725 @ $1.79 | EDGAR |
| 2026-02-19 | 4 | SenesTech, Inc. (SNES) | Purchase (P): 40,807 @ $2.29 · Purchase (P): 10,481 @ $2.29 · Purchase (P): 34,613 @ $2.40 | EDGAR |
| 2026-02-13 | 4 | SenesTech, Inc. (SNES) | Purchase (P): 8,000 @ $1.73 · Purchase (P): 7,956 @ $1.72 · Purchase (P): 15,390 @ $1.89 | EDGAR |
| 2026-02-06 | 4 | SenesTech, Inc. (SNES) | Purchase (P): 5,685 @ $1.82 · Purchase (P): 2,884 @ $1.77 | EDGAR |
| 2026-02-03 | 4 | SenesTech, Inc. (SNES) | Purchase (P): 5,399 @ $1.87 · Purchase (P): 42,739 @ $1.98 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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