Comparable stake leader
GLENBROOK CAPITAL MANAGEMENT
SEC ownership of SenesTech, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001680378.
Disclosed value leader
PFS CAP MGT CO
Comparable rows
18/33
Latest evidence
15 Jun 2026
- Public ticker
- SNES on Nasdaq
- Parsed ownership sources
-
13D/G, 3/4/5, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
GLENBROOK CAPITAL MANAGEMENT
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
18 of 33
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
GLENBROOK CAPITAL MANAGEMENT
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
15 Jun 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001680378
- Issuer location
- Phoenix, AZ
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of SenesTech, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
GLENBROOK CAPITAL MANAGEMENT
Disclosed value leader
PFS CAP MGT CO
Comparable rows
18/33
Latest evidence
15 Jun 2026
13D/G
3/4/5
13F
Lead comparable stake: 17%
15 rows are not safely comparable across share classes.
13D/G row: GLENBROOK CAPITAL MANAGEMENT
Showing 1-8 of 33 holder rows.
Quick read
GLENBROOK CAPITAL MANAGEMENT leads the comparable SEC ownership view at 17%.
18 of 33 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens GLENBROOK CAPITAL MANAGEMENT's linked filing trail.
Comparable ownership
Top 5
GLENBROOK CAPITAL MANAGEMENT
17%
PFS CAP MGT CO
10%
Lind Global Fund II LP
4.9%
SABBY MANAGEMENT, LLC
4.1%
RENAISSANCE TECHNOLOGIES LLC
2.2%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 33 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| GLENBROOK CAPITAL MANAGEMENT |
13D/G
3/4/5
10%+ Owner
|
17%
|
$1,585,330
890,635 shares
|
+$528,393 | 16 Mar 2026 |
| PFS CAP MGT CO |
13D/G
|
10%
|
$1,683,000
340,000 shares
|
+$1,234,990 | 30 Jun 2025 |
| Lind Global Fund II LP |
13D/G
|
4.9%
|
$208,215
93,370 shares
|
-$41,545 | 31 Mar 2025 |
| SABBY MANAGEMENT, LLC |
13F
Company
|
4.1%
|
$358,394
218,533 shares
|
— | 31 Mar 2026 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
2.2%
|
$186,960
114,000 shares
|
— | 31 Mar 2026 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
1.2%
|
$103,493
63,106 shares
|
— | 31 Mar 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
Company
|
0.81%
|
$70,299
42,865 shares
|
— | 31 Mar 2026 |
| VANGUARD FIDUCIARY TRUST CO |
13F
Company
|
0.6%
|
$51,978
31,694 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to buying over the last 12 months. Net value: +$807,308.
Buys
$807,479
Insiders: 2
Sells
$171
Insiders: 2
Net
+$807,308
Shares: +412,434
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 412,497
Shares: 63
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 67,509 | 0 | $109,991 | $0 | +$109,991 |
| 3-6 | 344,988 | 0 | $697,487 | $0 | +$697,487 |
| 6-9 | 0 | 63 | $0 | $171 | -$171 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-16 of 16 reporting-owner rows connected to SenesTech, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
16
Largest Forms 3/4/5 holder
GLENBROOK CAPITAL MANAGEMENT
Net 12M change
+$807,308
Latest report
15 Jun 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| GLENBROOK CAPITAL MANAGEMENT | 10%+ Owner | $1,540,751 | +$800,916 | +108% | Filing P/S | 04 Jun 2026 |
| Kenneth S. Siegel | Chief Executive Officer, Director | $142,170 | Mixed | 17 Feb 2022 | ||
| Kathleen Claire Kavanagh | Director | $135,221 | Mixed | 01 Jul 2022 | ||
| Marc Dumont | Director | $91,195 | Mixed | 01 Jul 2022 | ||
| Phillip Nicholas Grandinetti III | Director | $45,729 | Mixed | 15 Jun 2026 | ||
| Jamie Bechtel Morrison | Director | $41,917 | Mixed | 15 Jun 2026 | ||
| Thomas C. Chesterman | CFO & Treasurer | $32,936 | Mixed | 15 Jun 2026 | ||
| Delphine Francois Chiavarini | Director | $25,151 | Mixed | 26 Jun 2023 | ||
| Nicole C. Williams | Chief Strategy Officer | $25,117 | Mixed | 14 Dec 2022 | ||
| Kim Patrice Wolin | EVP and Secretary | $9,478 | Mixed | 17 Feb 2022 | ||
| Michael Edell | Chief Executive Officer, Director | $6,200 | +$6,563 | +106% | Filing P/S | 09 Jun 2026 |
| Matthew K. Szot | Director | $0 | -$3 | -100% | Mixed | 15 Jun 2026 |
| Jacob Steven Leach | Director | $0 | -$168 | -100% | Mixed | 15 Jun 2026 |
| Joel Lee Fruendt | Chief Executive Officer, Director | Mixed | 27 Aug 2024 | |||
| Joshua Matthew Moss | Director | Mixed | 15 Jun 2026 | |||
| Lynn Yako Graham | Director | Mixed | 15 Jun 2026 |
Recent insider transactions for SenesTech, Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Joshua Matthew Moss | SNES | Stock Option (right to buy) | Award | 100,000 | 100,000 | 15 Jun 2026 | Direct | |||
| Phillip Nicholas Grandinetti III | SNES | Stock Option (right to buy) | Award | 100,000 | 100,000 | 15 Jun 2026 | Direct | |||
| Jacob Steven Leach | SNES | Stock Option (right to buy) | Award | 100,000 | 100,000 | 15 Jun 2026 | Direct | |||
| Matthew K. Szot | SNES | Stock Option (right to buy) | Award | 100,000 | 100,000 | 15 Jun 2026 | Direct | |||
| Thomas C. Chesterman | SNES | Stock Option (right to buy) | Award | 75,000 | 75,000 | 15 Jun 2026 | Direct | |||
| Lynn Yako Graham | SNES | Stock Option (right to buy) | Award | 100,000 | 100,000 | 15 Jun 2026 | Direct | |||
| Jamie Bechtel Morrison | SNES | Stock Option (right to buy) | Award | 100,000 | 100,000 | 15 Jun 2026 | Direct | |||
| Michael Edell | SNES | Stock Option (right to buy) | Award | 263,288 | 263,288 | 09 Jun 2026 | Direct | |||
| Michael Edell | SNES | Common Stock | Purchase | 33.3% | $1,550 | $1.55 | 1,000 | 4,000 | 08 Jun 2026 | Direct |
| Glenbrook Capital Management | SNES | Common Stock | Purchase | 0.74% | $11,304 | $1.61 | 7,000 | 954,144 | 08 Jun 2026 | See footnote |
| Glenbrook Capital Management | SNES | Common Stock | Purchase | 1.41% | $20,685 | $1.57 | 13,159 | 947,144 | 05 Jun 2026 | See footnote |
| Glenbrook Capital Management | SNES | Common Stock, $0.001 par value per share ("Common Stock") | Purchase | 0.89% | $13,547 | $1.65 | 8,230 | 933,985 | 04 Jun 2026 | See footnote |
| Glenbrook Capital Management | SNES | Common Stock | Purchase | 1.09% | $15,878 | $1.59 | 10,000 | 925,755 | 18 May 2026 | See footnote |
| Glenbrook Capital Management | SNES | Common Stock | Purchase | 0.78% | $11,747 | $1.65 | 7,120 | 915,755 | 15 May 2026 | See footnote |
| Michael Edell | SNES | Common Stock | Purchase | 50% | $1,615 | $1.62 | 1,000 | 3,000 | 15 May 2026 | Direct |
| Glenbrook Capital Management | SNES | Common Stock, $0.001 par value per share ("Common Stock") | Purchase | 1.68% | $25,862 | $1.72 | 15,000 | 908,635 | 14 May 2026 | See footnote |
| Michael Edell | SNES | Common Stock | Purchase | $3,398 | $1.70 | 2,000 | 2,000 | 14 May 2026 | Direct | |
| Glenbrook Capital Management | SNES | Common Stock, $0.001 par value per share | Purchase | 0.34% | $4,407 | $1.47 | 3,000 | 893,635 | 28 Apr 2026 | See footnote |
| Glenbrook Capital Management | SNES | Common Stock | Purchase | 2.26% | $35,355 | $1.79 | 19,725 | 890,635 | 17 Mar 2026 | See footnote |
| Glenbrook Capital Management | SNES | Common Stock | Purchase | 0.58% | $9,392 | $1.86 | 5,060 | 870,910 | 16 Mar 2026 | See footnote |
| Glenbrook Capital Management | SNES | Common Stock, $0.001 par value per share ("Common Stock") | Purchase | 20.3% | $285,434 | $1.95 | 146,249 | 865,850 | 13 Mar 2026 | See footnote |
| Glenbrook Capital Management | SNES | Common Stock | Purchase | 5.17% | $83,140 | $2.40 | 34,613 | 704,211 | 19 Feb 2026 | See footnote |
| Glenbrook Capital Management | SNES | Common Stock | Purchase | 1.59% | $24,001 | $2.29 | 10,481 | 669,598 | 18 Feb 2026 | See footnote |
| Glenbrook Capital Management | SNES | Common Stock, $0.001 par value per share ("Common Stock") | Purchase | 6.6% | $93,493 | $2.29 | 40,807 | 659,117 | 17 Feb 2026 | See footnote |
| Glenbrook Capital Management | SNES | Common Stock | Purchase | 2.49% | $29,106 | $1.89 | 15,390 | 633,700 | 13 Feb 2026 | See footnote |
| Glenbrook Capital Management | SNES | Common Stock | Purchase | 1.3% | $13,688 | $1.72 | 7,956 | 618,310 | 12 Feb 2026 | See footnote |
| Glenbrook Capital Management | SNES | Common Stock, $0.001 par value per share ("Common Stock") | Purchase | 1.33% | $13,874 | $1.73 | 8,000 | 610,354 | 11 Feb 2026 | See footnote |
| Glenbrook Capital Management | SNES | Common Stock | Purchase | 0.48% | $5,106 | $1.77 | 2,884 | 602,354 | 05 Feb 2026 | See footnote |
| Glenbrook Capital Management | SNES | Common Stock, $0.001 par value per share ("Common Stock") | Purchase | 0.96% | $10,373 | $1.82 | 5,685 | 599,470 | 04 Feb 2026 | See footnote |
| Glenbrook Capital Management | SNES | Common Stock | Purchase | 7.76% | $84,418 | $1.98 | 42,739 | 593,785 | 02 Feb 2026 | See footnote |
| Glenbrook Capital Management | SNES | Common Stock, $0.001 par value per share ("Common Stock") | Purchase | 0.99% | $10,106 | $1.87 | 5,399 | 551,046 | 30 Jan 2026 | See footnote |
| Jacob Steven Leach | SNES | Common Stock | Sale | -100% | $168 | $2.71 | -62 | 0 | 18 Nov 2025 | Direct |
| Matthew K. Szot | SNES | Common Stock | Sale | -100% | $2.75 | $2.75 | -1 | 0 | 14 Nov 2025 | Direct |
* marks a reported price that did not pass the local price check.