Canada Construction & Engineering

Greenbriar Sustainable Living Inc (GRB)

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Greenbriar Sustainable Living Inc. witnessed thirteen insider trading transactions over the past ninety days, all representing purchases. Directors Jeffrey Ciachurski and Brian Conlan acquired shares totaling approximately $23,195. This accumulation coincides with a 37.3% stock price increase, occurring after the most recent June 2025 earnings report.
Ticker: GRB Exchange: CVE
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for Greenbriar Sustainable Living Inc. Upgrade to see score, net flow, insiders and the full signal context.

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Top insiders
Trades
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
2.4
Ciachurski, Jeffrey Joseph 10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer Executive Director Large shareholder
Transaction date
Purchase
Price
152.06
Quantity 69,440 +49.8%
Value CA$3,129,415
2.6
Conlan, Brian Director of Issuer Non-Executive Director
Transaction date
Purchase
Price
201.43
Quantity 16,945 -35.8%
Value US$4,169,913
2.6
Conlan, Brian Director of Issuer Non-Executive Director
Transaction date
Purchase
Price
368.26
Quantity 47,559 -11.6%
Value US$2,754,649
2.4
Ciachurski, Jeffrey Joseph 10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer Executive Director Large shareholder
Transaction date
Purchase
Price
0.77
Quantity 700 +0.0%
Value CA$539
2.4
Ciachurski, Jeffrey Joseph 10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer Executive Director Large shareholder
Transaction date
Purchase
Price
0.65
Quantity 500 +0.0%
Value CA$325
2.4
Ciachurski, Jeffrey Joseph 10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer Executive Director Large shareholder
Transaction date
Purchase
Price
0.59
Quantity 1,100 +0.0%
Value CA$649
2.4
Ciachurski, Jeffrey Joseph 10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer Executive Director Large shareholder
Transaction date
Purchase
Price
0.55
Quantity 1,000 +0.0%
Value CA$550
2.4
Ciachurski, Jeffrey Joseph 10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer Executive Director Large shareholder
Transaction date
Purchase
Price
0.58
Quantity 1,000 +0.0%
Value CA$580
2.4
Ciachurski, Jeffrey Joseph 10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer Executive Director Large shareholder
Transaction date
Purchase
Price
0.59
Quantity 1,000 +0.0%
Value CA$590
2.4
Ciachurski, Jeffrey Joseph 10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer Executive Director Large shareholder
Transaction date
Purchase
Price
0.57
Quantity 1,000 +0.0%
Value CA$570
2.4
Ciachurski, Jeffrey Joseph 10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer Executive Director Large shareholder
Transaction date
Purchase
Price
0.57
Quantity 500 +0.0%
Value CA$285
2.4
Ciachurski, Jeffrey Joseph 10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer Executive Director Large shareholder
Transaction date
Purchase
Price
0.56
Quantity 500 +0.0%
Value CA$280
2.4
Ciachurski, Jeffrey Joseph 10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer Executive Director Large shareholder
Transaction date
Purchase
Price
0.55
Quantity 1,000 +0.0%
Value CA$550
2.4
Ciachurski, Jeffrey Joseph 10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer Executive Director Large shareholder
Transaction date
Purchase
Price
0.50
Quantity 1,000 +0.0%
Value CA$500
2.4
Ciachurski, Jeffrey Joseph 10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer Executive Director Large shareholder
Transaction date
Sale
Price
0.40
Quantity 3,000 -0.1%
Value CA$1,200
2.4
Ciachurski, Jeffrey Joseph 10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer Executive Director Large shareholder
Transaction date
Purchase
Price
0.54
Quantity 1,000 +0.0%
Value CA$535
2.6
Conlan, Brian Director of Issuer Non-Executive Director
Transaction date
Purchase
Price
0.32
Quantity 50,000 +5.9%
Value US$16,000
2.6
Conlan, Brian Director of Issuer Non-Executive Director
Transaction date
Purchase
Price
0.32
Quantity 565 +0.1%
Value US$181
2.6
Conlan, Brian Director of Issuer Non-Executive Director
Transaction date
Purchase
Price
0.32
Quantity 10,000 +1.2%
Value US$3,200
2.6
Conlan, Brian Director of Issuer Non-Executive Director
Transaction date
Purchase
Price
0.32
Quantity 38,750 +4.8%
Value CA$12,400
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-08-05 2026-07-31 B Purchase
2.4
Ciachurski, Jeffrey Joseph

10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer

Executive Director Large shareholder
69,440 +49.8%
152.06
CA$3,129,415 		69,440 +49.8% 152.06 CA$3,129,415
2026-07-24 2026-07-24 B Purchase
2.6
Conlan, Brian

Director of Issuer

Non-Executive Director
16,945 -35.8%
201.43
US$4,169,913 		16,945 -35.8% 201.43 US$4,169,913
2026-07-24 2026-07-13 B Purchase
2.6
Conlan, Brian

Director of Issuer

Non-Executive Director
47,559 -11.6%
368.26
US$2,754,649 		47,559 -11.6% 368.26 US$2,754,649
2026-06-30 2026-06-29 B Purchase
2.4
Ciachurski, Jeffrey Joseph

10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer

Executive Director Large shareholder
700 +0.0%
0.77
CA$539 		700 +0.0% 0.77 CA$539
2026-06-20 2026-06-18 B Purchase
2.4
Ciachurski, Jeffrey Joseph

10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer

Executive Director Large shareholder
500 +0.0%
0.65
CA$325 		500 +0.0% 0.65 CA$325
2026-06-20 2026-06-17 B Purchase
2.4
Ciachurski, Jeffrey Joseph

10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer

Executive Director Large shareholder
1,100 +0.0%
0.59
CA$649 		1,100 +0.0% 0.59 CA$649
2026-06-01 2026-05-29 B Purchase
2.4
Ciachurski, Jeffrey Joseph

10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer

Executive Director Large shareholder
1,000 +0.0%
0.55
CA$550 		1,000 +0.0% 0.55 CA$550
2026-05-21 2026-05-19 B Purchase
2.4
Ciachurski, Jeffrey Joseph

10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer

Executive Director Large shareholder
1,000 +0.0%
0.58
CA$580 		1,000 +0.0% 0.58 CA$580
2026-05-21 2026-05-15 B Purchase
2.4
Ciachurski, Jeffrey Joseph

10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer

Executive Director Large shareholder
1,000 +0.0%
0.59
CA$590 		1,000 +0.0% 0.59 CA$590
2026-05-14 2026-05-12 B Purchase
2.4
Ciachurski, Jeffrey Joseph

10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer

Executive Director Large shareholder
1,000 +0.0%
0.57
CA$570 		1,000 +0.0% 0.57 CA$570
2026-05-14 2026-05-12 B Purchase
2.4
Ciachurski, Jeffrey Joseph

10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer

Executive Director Large shareholder
500 +0.0%
0.57
CA$285 		500 +0.0% 0.57 CA$285
2026-05-14 2026-05-12 B Purchase
2.4
Ciachurski, Jeffrey Joseph

10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer

Executive Director Large shareholder
500 +0.0%
0.56
CA$280 		500 +0.0% 0.56 CA$280
2026-05-14 2026-05-12 B Purchase
2.4
Ciachurski, Jeffrey Joseph

10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer

Executive Director Large shareholder
1,000 +0.0%
0.55
CA$550 		1,000 +0.0% 0.55 CA$550
2026-05-01 2026-04-28 B Purchase
2.4
Ciachurski, Jeffrey Joseph

10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer

Executive Director Large shareholder
1,000 +0.0%
0.50
CA$500 		1,000 +0.0% 0.50 CA$500
2026-04-08 2026-04-02 S Sale
2.4
Ciachurski, Jeffrey Joseph

10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer

Executive Director Large shareholder
3,000 -0.1%
0.40
CA$1,200 		3,000 -0.1% 0.40 CA$1,200
2026-03-06 2026-03-05 B Purchase
2.4
Ciachurski, Jeffrey Joseph

10% Security Holder of Issuer, Director of Issuer, Senior Officer of Issuer

Executive Director Large shareholder
1,000 +0.0%
0.54
CA$535 		1,000 +0.0% 0.54 CA$535
2026-02-23 2026-02-20 B Purchase
2.6
Conlan, Brian

Director of Issuer

Non-Executive Director
50,000 +5.9%
0.32
US$16,000 		50,000 +5.9% 0.32 US$16,000
2026-02-23 2026-02-19 B Purchase
2.6
Conlan, Brian

Director of Issuer

Non-Executive Director
565 +0.1%
0.32
US$181 		565 +0.1% 0.32 US$181
2026-02-23 2026-02-13 B Purchase
2.6
Conlan, Brian

Director of Issuer

Non-Executive Director
10,000 +1.2%
0.32
US$3,200 		10,000 +1.2% 0.32 US$3,200
2026-02-23 2026-02-12 B Purchase
2.6
Conlan, Brian

Director of Issuer

Non-Executive Director
38,750 +4.8%
0.32
CA$12,400 		38,750 +4.8% 0.32 CA$12,400
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