United States Biotechnology & Medical Research

Senestech Inc (SNES)

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Senestech Inc. recorded 21 insider trading transactions over the past 90 days, all representing purchases totaling approximately $279,093. Notable activity includes consistent buying by Glenbrook Capital Management and CEO Michael Edell. These acquisitions occurred despite a 26.6% decline in stock price, following the company's most recent August 2026 results financiers.
Ticker: SNES Exchange: NAS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Top insiders
Trades
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Edell Michael Chief Executive Officer Executive Director
Transaction date
Purchase
Price
1.43
Quantity 1,000 +25.0%
Value US$1,430
Edell Michael Chief Executive Officer Executive Director
Transaction date
Purchase
Price
1.55
Quantity 1,000 +33.3%
Value US$1,550
Edell Michael Chief Executive Officer Executive Director
Transaction date
Purchase
Price
1.55
Quantity 1,000 +33.3%
Value US$1,550
Edell Michael Chief Executive Officer Executive Director
Transaction date
Purchase
Price
1.62
Quantity 1,000 +50.0%
Value US$1,615
Edell Michael Chief Executive Officer Executive Director
Transaction date
Purchase
Price
1.70
Quantity 2,000 +inf%
Value US$3,398
2.9
Leach Jacob Steven Non-Executive Director
Transaction date
Sale
Price
2.71
Quantity 62 -100.0%
Value US$168
2.3
Szot Matthew K Non-Executive Director
Transaction date
Sale
Price
2.75
Quantity 1 -100.0%
Value US$3
Mayer Loretta Powers Chief Scientific Officer Executive Director
Transaction date
Planned sale
Price
0.83
Quantity 6,000 -1.8%
Value US$4,980
Dyer Cheryl Ann Pres. & Chief Research Officer
Transaction date
Planned sale
Price
0.93
Quantity 6,000 -1.6%
Value US$5,575
Mayer Loretta Powers Chief Scientific Officer Executive Director
Transaction date
Sale
Price
1.19
Quantity 20,000 -5.1%
Value US$23,734
Dyer Cheryl Ann Pres. & Chief Research Officer Officer
Transaction date
Sale
Price
1.21
Quantity 20,000 -5.0%
Value US$24,100
Mayer Loretta Powers Chief Scientific Officer Executive Director
Transaction date
Sale
Price
1.24
Quantity 20,000 -4.9%
Value US$24,756
Dyer Cheryl Ann Pres. & Chief Research Officer Officer
Transaction date
Sale
Price
1.18
Quantity 20,000 -4.8%
Value US$23,622
0.6
SIEGEL KENNETH S CEO Executive Director
Transaction date
Purchase
Price
1.35
Quantity 696,296 +11119.4%
Value US$940,000
Williams Julia Ann Non-Executive Director
Transaction date
Purchase
Price
1.15
Quantity 1,000 +25.0%
Value US$1,150
Williams Julia Ann Non-Executive Director
Transaction date
Purchase
Price
1.15
Quantity 6,000 +4.3%
Value US$6,900
Williams Julia Ann Non-Executive Director
Transaction date
Purchase
Price
1.15
Quantity 4,000 +100.0%
Value US$4,600
Mayer Loretta Powers CEO & Chief Scientific Officer Executive Director
Transaction date
Planned sale
Price
2.13
Quantity 6,000 -1.5%
Value US$12,780
Mayer Loretta Powers CEO & Chief Scientific Officer Executive Director
Transaction date
Planned sale
Price
0.67
Quantity 6,000 -1.5%
Value US$4,026
Dyer Cheryl Ann Pres. & Chief Research Officer Executive Director
Transaction date
Planned sale
Price
0.82
Quantity 6,000 -1.5%
Value US$4,921
Williams Julia Ann
Transaction date
Purchase
Price
0.90
Quantity 1,700 +7.7%
Value US$1,525
Mayer Loretta Powers CEO & Chief Scientific Officer Executive Director
Transaction date
Planned sale
Price
0.89
Quantity 6,000 -1.5%
Value US$5,363
Dyer Cheryl Ann Pres. & Chief Research Officer Executive Director
Transaction date
Planned sale
Price
2.72
Quantity 6,000 -1.5%
Value US$16,339
Mayer Loretta Powers CEO & Chief Scientific Officer Executive Director
Transaction date
Planned sale
Price
1.52
Quantity 6,000 -1.5%
Value US$9,126
Dyer Cheryl Ann Pres. & Chief Research Officer Executive Director
Transaction date
Planned sale
Price
1.97
Quantity 6,000 -1.3%
Value US$11,808
Mayer Loretta Powers CEO & Chief Scientific Officer Executive Director
Transaction date
Planned sale
Price
1.79
Quantity 6,000 -1.5%
Value US$10,740
Dyer Cheryl Ann Pres. & Chief Research Officer Executive Director
Transaction date
Planned sale
Price
2.31
Quantity 6,000 -1.4%
Value US$13,834
Mayer Loretta Powers CEO & Chief Scientific Officer Executive Director
Transaction date
Planned sale
Price
2.37
Quantity 6,000 -1.5%
Value US$14,221
Altman Andrew Chief Operating Officer
Transaction date
Purchase
Price
2.46
Quantity 2,028 +11.3%
Value US$4,987
Williams Julia Ann
Transaction date
Purchase
Price
2.80
Quantity 9,000 +74.7%
Value US$25,200
Altman Andrew Chief Operating Officer
Transaction date
Purchase
Price
2.81
Quantity 14,372 +399.2%
Value US$40,332
Williams Julia Ann
Transaction date
Purchase
Price
2.75
Quantity 100 +0.8%
Value US$275
Altman Andrew Chief Operating Officer
Transaction date
Purchase
Price
2.82
Quantity 1,000 +38.5%
Value US$2,820
Altman Andrew Chief Operating Officer
Transaction date
Purchase
Price
2.79
Quantity 2,600 +inf%
Value US$7,252
WICKERSHAM GROVER T. Non-Executive Director
Transaction date
Purchase
Price
3.04
Quantity 10,000 +4.2%
Value US$30,442
Williams Julia Ann Non-Executive Director
Transaction date
Purchase
Price
3.21
Quantity 10,000 +512.8%
Value US$32,099
WICKERSHAM GROVER T. Non-Executive Director
Transaction date
Purchase
Price
2.81
Quantity 2,500 +4.9%
Value US$7,025
WICKERSHAM GROVER T. Non-Executive Director
Transaction date
Purchase
Price
2.86
Quantity 12,500 +5.5%
Value US$35,750
CHESTERMAN THOMAS C CFO and Treasurer Officer
Transaction date
Planned sale
Price
5.15
Quantity 393 -3.8%
Value US$2,024
CHESTERMAN THOMAS C CFO and Treasurer Officer
Transaction date
Planned sale
Price
5.17
Quantity 18 -0.2%
Value US$93
CHESTERMAN THOMAS C CFO and Treasurer Officer
Transaction date
Planned sale
Price
5.13
Quantity 1,000 -8.9%
Value US$5,130
CHESTERMAN THOMAS C CFO and Treasurer
Transaction date
Sale
Price
5.85
Quantity 1,000 -8.1%
Value US$5,850
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-08-10 2026-08-07 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
42,958 +47.8%
56.83
US$4,668,531 		42,958 +47.8% 56.83 US$4,668,531
2026-08-10 2026-08-06 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
46,767 -5.0%
154.61
US$4,201,349 		46,767 -5.0% 154.61 US$4,201,349
2026-07-22 2026-07-20 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
66,018 -40.3%
58.03
US$4,665,527 		66,018 -40.3% 58.03 US$4,665,527
2026-07-08 2026-07-07 B Purchase
Edell Michael

Chief Executive Officer

Executive Director
1,000 +25.0%
1.43
US$1,430 		1,000 +25.0% 1.43 US$1,430
2026-07-02 2026-06-30 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
35,000 +3.5%
1.51
US$52,731 		35,000 +3.5% 1.51 US$52,731
2026-06-29 2026-06-29 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
5,172 +0.5%
1.52
US$7,884 		5,172 +0.5% 1.52 US$7,884
2026-06-29 2026-06-26 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
6,812 +0.7%
1.56
US$10,598 		6,812 +0.7% 1.56 US$10,598
2026-06-29 2026-06-25 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
9,442 +1.0%
1.53
US$14,435 		9,442 +1.0% 1.53 US$14,435
2026-06-29 2026-06-24 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
3,990 +0.4%
1.55
US$6,185 		3,990 +0.4% 1.55 US$6,185
2026-06-22 2026-06-22 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
5,000 +0.5%
1.66
US$8,296 		5,000 +0.5% 1.66 US$8,296
2026-06-22 2026-06-22 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
5,000 +0.5%
1.66
US$8,296 		5,000 +0.5% 1.66 US$8,296
2026-06-22 2026-06-17 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
3,264 +0.3%
1.61
US$5,268 		3,264 +0.3% 1.61 US$5,268
2026-06-22 2026-06-17 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
3,264 +0.3%
1.61
US$5,268 		3,264 +0.3% 1.61 US$5,268
2026-06-09 2026-06-08 B Purchase
Edell Michael

Chief Executive Officer

Executive Director
1,000 +33.3%
1.55
US$1,550 		1,000 +33.3% 1.55 US$1,550
2026-06-09 2026-06-08 B Purchase
Edell Michael

Chief Executive Officer

Executive Director
1,000 +33.3%
1.55
US$1,550 		1,000 +33.3% 1.55 US$1,550
2026-06-08 2026-06-08 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
7,000 +0.7%
1.61
US$11,304 		7,000 +0.7% 1.61 US$11,304
2026-06-08 2026-06-05 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
13,159 +1.4%
1.57
US$20,685 		13,159 +1.4% 1.57 US$20,685
2026-06-08 2026-06-04 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
8,230 +0.9%
1.65
US$13,547 		8,230 +0.9% 1.65 US$13,547
2026-05-18 2026-05-18 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
10,000 +1.1%
1.59
US$15,878 		10,000 +1.1% 1.59 US$15,878
2026-05-18 2026-05-15 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
7,120 +0.8%
1.65
US$11,747 		7,120 +0.8% 1.65 US$11,747
2026-05-18 2026-05-15 B Purchase
Edell Michael

Chief Executive Officer

Executive Director
1,000 +50.0%
1.62
US$1,615 		1,000 +50.0% 1.62 US$1,615
2026-05-18 2026-05-14 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
15,000 +1.7%
1.72
US$25,862 		15,000 +1.7% 1.72 US$25,862
2026-05-18 2026-05-14 B Purchase
Edell Michael

Chief Executive Officer

Executive Director
2,000 +inf%
1.70
US$3,398 		2,000 +inf% 1.70 US$3,398
2026-04-30 2026-04-28 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
3,000 +0.3%
1.47
US$4,407 		3,000 +0.3% 1.47 US$4,407
2026-03-17 2026-03-17 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
19,725 +2.3%
1.79
US$35,355 		19,725 +2.3% 1.79 US$35,355
2026-03-17 2026-03-16 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
5,060 +0.6%
1.86
US$9,392 		5,060 +0.6% 1.86 US$9,392
2026-03-17 2026-03-13 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
146,249 +20.3%
1.95
US$285,434 		146,249 +20.3% 1.95 US$285,434
2026-02-19 2026-02-19 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
34,613 +5.2%
2.40
US$83,140 		34,613 +5.2% 2.40 US$83,140
2026-02-19 2026-02-18 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
10,481 +1.6%
2.29
US$24,001 		10,481 +1.6% 2.29 US$24,001
2026-02-19 2026-02-17 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
40,807 +6.6%
2.29
US$93,493 		40,807 +6.6% 2.29 US$93,493
2026-02-13 2026-02-13 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
15,390 +2.5%
1.89
US$29,106 		15,390 +2.5% 1.89 US$29,106
2026-02-13 2026-02-12 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
7,956 +1.3%
1.72
US$13,688 		7,956 +1.3% 1.72 US$13,688
2026-02-13 2026-02-11 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
8,000 +1.3%
1.73
US$13,874 		8,000 +1.3% 1.73 US$13,874
2026-02-06 2026-02-05 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
2,884 +0.5%
1.77
US$5,106 		2,884 +0.5% 1.77 US$5,106
2026-02-06 2026-02-04 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
5,685 +1.0%
1.82
US$10,373 		5,685 +1.0% 1.82 US$10,373
2026-02-03 2026-02-02 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
42,739 +7.8%
1.98
US$84,418 		42,739 +7.8% 1.98 US$84,418
2026-02-03 2026-02-02 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
42,739 +7.8%
1.98
US$84,418 		42,739 +7.8% 1.98 US$84,418
2026-02-03 2026-01-30 B Purchase
1.7
GLENBROOK CAPITAL MANAGEMENT
Large shareholder
5,399 +1.0%
1.87
US$10,106 		5,399 +1.0% 1.87 US$10,106
2025-11-19 2025-11-18 S Sale
2.9
Leach Jacob Steven
Non-Executive Director
62 -100.0%
2.71
US$168 		62 -100.0% 2.71 US$168
2025-11-17 2025-11-14 S Sale
2.3
Szot Matthew K
Non-Executive Director
1 -100.0%
2.75
US$3 		1 -100.0% 2.75 US$3
2019-10-22 2019-10-21 PlS Planned sale
Mayer Loretta Powers

Chief Scientific Officer

Executive Director
6,000 -1.8%
0.83
US$4,980 		6,000 -1.8% 0.83 US$4,980
2019-10-04 2019-10-02 PlS Planned sale
Dyer Cheryl Ann

Pres. & Chief Research Officer
6,000 -1.6%
0.93
US$5,575 		6,000 -1.6% 0.93 US$5,575
2019-08-16 2019-08-15 S Sale Mayer Loretta Powers

Chief Scientific Officer

Executive Director
20,000 -5.1%
1.19
US$23,734 		20,000 -5.1% 1.19 US$23,734
2019-08-16 2019-08-15 S Sale Dyer Cheryl Ann

Pres. & Chief Research Officer

Officer
20,000 -5.0%
1.21
US$24,100 		20,000 -5.0% 1.21 US$24,100
2019-08-16 2019-08-14 S Sale Mayer Loretta Powers

Chief Scientific Officer

Executive Director
20,000 -4.9%
1.24
US$24,756 		20,000 -4.9% 1.24 US$24,756
2019-08-16 2019-08-14 S Sale Dyer Cheryl Ann

Pres. & Chief Research Officer

Officer
20,000 -4.8%
1.18
US$23,622 		20,000 -4.8% 1.18 US$23,622
2019-07-18 2019-07-16 B Purchase
0.6
SIEGEL KENNETH S

CEO

Executive Director
696,296 +11119.4%
1.35
US$940,000 		696,296 +11119.4% 1.35 US$940,000
2018-08-15 2018-08-13 B Purchase Williams Julia Ann Non-Executive Director
1,000 +25.0%
1.15
US$1,150 		1,000 +25.0% 1.15 US$1,150
2018-08-15 2018-08-13 B Purchase Williams Julia Ann Non-Executive Director
6,000 +4.3%
1.15
US$6,900 		6,000 +4.3% 1.15 US$6,900
2018-08-15 2018-08-13 B Purchase Williams Julia Ann Non-Executive Director
4,000 +100.0%
1.15
US$4,600 		4,000 +100.0% 1.15 US$4,600
2018-06-25 2018-06-21 PlS Planned sale Mayer Loretta Powers

CEO & Chief Scientific Officer

Executive Director
6,000 -1.5%
2.13
US$12,780 		6,000 -1.5% 2.13 US$12,780
2017-12-26 2017-12-21 PlS Planned sale Mayer Loretta Powers

CEO & Chief Scientific Officer

Executive Director
6,000 -1.5%
0.67
US$4,026 		6,000 -1.5% 0.67 US$4,026
2017-12-05 2017-12-04 PlS Planned sale Dyer Cheryl Ann

Pres. & Chief Research Officer

Executive Director
6,000 -1.5%
0.82
US$4,921 		6,000 -1.5% 0.82 US$4,921
2017-11-28 2017-11-24 B Purchase Williams Julia Ann
1,700 +7.7%
0.90
US$1,525 		1,700 +7.7% 0.90 US$1,525
2017-11-22 2017-11-21 PlS Planned sale Mayer Loretta Powers

CEO & Chief Scientific Officer

Executive Director
6,000 -1.5%
0.89
US$5,363 		6,000 -1.5% 0.89 US$5,363
2017-11-03 2017-11-02 PlS Planned sale Dyer Cheryl Ann

Pres. & Chief Research Officer

Executive Director
6,000 -1.5%
2.72
US$16,339 		6,000 -1.5% 2.72 US$16,339
2017-10-24 2017-10-20 PlS Planned sale Mayer Loretta Powers

CEO & Chief Scientific Officer

Executive Director
6,000 -1.5%
1.52
US$9,126 		6,000 -1.5% 1.52 US$9,126
2017-10-03 2017-10-03 PlS Planned sale Dyer Cheryl Ann

Pres. & Chief Research Officer

Executive Director
6,000 -1.3%
1.97
US$11,808 		6,000 -1.3% 1.97 US$11,808
2017-09-26 2017-09-22 PlS Planned sale Mayer Loretta Powers

CEO & Chief Scientific Officer

Executive Director
6,000 -1.5%
1.79
US$10,740 		6,000 -1.5% 1.79 US$10,740
2017-09-07 2017-09-05 PlS Planned sale Dyer Cheryl Ann

Pres. & Chief Research Officer

Executive Director
6,000 -1.4%
2.31
US$13,834 		6,000 -1.4% 2.31 US$13,834
2017-08-23 2017-08-21 PlS Planned sale Mayer Loretta Powers

CEO & Chief Scientific Officer

Executive Director
6,000 -1.5%
2.37
US$14,221 		6,000 -1.5% 2.37 US$14,221
2017-08-18 2017-08-18 B Purchase Altman Andrew

Chief Operating Officer
2,028 +11.3%
2.46
US$4,987 		2,028 +11.3% 2.46 US$4,987
2017-08-18 2017-08-17 B Purchase Williams Julia Ann
9,000 +74.7%
2.80
US$25,200 		9,000 +74.7% 2.80 US$25,200
2017-08-18 2017-08-17 B Purchase Altman Andrew

Chief Operating Officer
14,372 +399.2%
2.81
US$40,332 		14,372 +399.2% 2.81 US$40,332
2017-08-18 2017-08-16 B Purchase Williams Julia Ann
100 +0.8%
2.75
US$275 		100 +0.8% 2.75 US$275
2017-08-18 2017-08-16 B Purchase Altman Andrew

Chief Operating Officer
1,000 +38.5%
2.82
US$2,820 		1,000 +38.5% 2.82 US$2,820
2017-08-18 2017-08-16 B Purchase Altman Andrew

Chief Operating Officer
2,600 +inf%
2.79
US$7,252 		2,600 +inf% 2.79 US$7,252
2017-07-27 2017-07-26 B Purchase WICKERSHAM GROVER T. Non-Executive Director
10,000 +4.2%
3.04
US$30,442 		10,000 +4.2% 3.04 US$30,442
2017-07-26 2017-07-26 B Purchase Williams Julia Ann Non-Executive Director
10,000 +512.8%
3.21
US$32,099 		10,000 +512.8% 3.21 US$32,099
2017-07-26 2017-07-25 B Purchase WICKERSHAM GROVER T. Non-Executive Director
2,500 +4.9%
2.81
US$7,025 		2,500 +4.9% 2.81 US$7,025
2017-07-26 2017-07-25 B Purchase WICKERSHAM GROVER T. Non-Executive Director
12,500 +5.5%
2.86
US$35,750 		12,500 +5.5% 2.86 US$35,750
2017-07-20 2017-07-17 PlS Planned sale CHESTERMAN THOMAS C

CFO and Treasurer

Officer
393 -3.8%
5.15
US$2,024 		393 -3.8% 5.15 US$2,024
2017-07-20 2017-07-17 PlS Planned sale CHESTERMAN THOMAS C

CFO and Treasurer

Officer
18 -0.2%
5.17
US$93 		18 -0.2% 5.17 US$93
2017-07-20 2017-07-17 PlS Planned sale CHESTERMAN THOMAS C

CFO and Treasurer

Officer
1,000 -8.9%
5.13
US$5,130 		1,000 -8.9% 5.13 US$5,130
2017-06-12 2017-06-12 S Sale CHESTERMAN THOMAS C

CFO and Treasurer
1,000 -8.1%
5.85
US$5,850 		1,000 -8.1% 5.85 US$5,850
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