GLENBROOK CAPITAL MANAGEMENT 4
4 · SenesTech, Inc. · Filed May 18, 2026
Research Summary
AI-generated summary of this filing
SenesTech (SNES) 10% Owner Glenbrook Capital Buys 32,120 Shares
What Happened Glenbrook Capital Management — reported as a 10% owner and investment manager — purchased a total of 32,120 SenesTech (SNES) shares in three reported transactions (reported as "P" = purchase). The buys were: 15,000 shares on 2026-05-14 for $1.72 ($25,862), 7,120 shares on 2026-05-15 for $1.65 ($11,747), and 10,000 shares on 2026-05-18 for $1.59 ($15,878). Total reported outlay across the three trades was $53,487. These were purchases (buying shares), which investors commonly view as a more informative signal than routine sales.
Key Details
- Transaction dates & prices: 2026-05-14 — 15,000 @ $1.72 ($25,862); 2026-05-15 — 7,120 @ $1.65 ($11,747); 2026-05-18 — 10,000 @ $1.59 ($15,878). (All reported as P = Purchase.)
- Total shares bought: 32,120; total reported cost: $53,487.
- Filing date: 2026-05-18 (Form 4 filed the same day as the last trade); filing appears timely under the two-business-day Form 4 rule for the listed dates.
- Shares owned after transaction: not specified in the data you provided / not stated in the excerpted filing.
- Footnote: Glenbrook states the shares are held directly in an account for which it serves as investment manager and disclaims beneficial ownership for Section 16 purposes except to the extent of any pecuniary interest.
Context
- Glenbrook is an institutional 10% owner acting as an investment manager, not an individual company executive; the filing notes Glenbrook manages the account and disclaims direct beneficial ownership (standard for investment managers).
- These are straightforward purchases (no option exercises, grants, or gifts). Purchases by sizable holders can be interpreted positively, but they are not proof of future performance — this is factual reporting of trades only.
Insider Transaction Report
Form 4
SenesTech, Inc.SNES
GLENBROOK CAPITAL MANAGEMENT
10% Owner
Transactions
- Purchase
Common Stock, $0.001 par value per share ("Common Stock")
[F1]2026-05-14$1.72/sh+15,000$25,862→ 908,635 total(indirect: See footnote) - Purchase
Common Stock
[F1]2026-05-15$1.65/sh+7,120$11,747→ 915,755 total(indirect: See footnote) - Purchase
Common Stock
[F1]2026-05-18$1.59/sh+10,000$15,878→ 925,755 total(indirect: See footnote)
Footnotes (1)
- [F1]The securities to which this filing relates are held directly by a certain account for which Glenbrook Capital Management (the "Reporting Person") serves as the investment manager. The Reporting Person disclaims beneficial ownership of the securities to which this filing relates for purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except to the extent of its pecuniary interest therein, if any.
Signature
Glenbrook Capital Management, By: /s/ John David Kessler, Director|2026-05-18