Canada Construction & Engineering

Greenbriar Sustainable Living Inc (GRB)

Track

Track

Greenbriar Sustainable Living Inc. recorded nine insider trading transactions over the past ninety days. Director Brian Conlan led buying activity, while Jeffrey Joseph Ciachurski executed both purchases and sales. Despite an 18.8% decline in stock value, net buying totaled $36,492.69. The most recent results financiers were reported in June 2025.
Ticker: GRB Exchange: CVE
Preparing chart...
Download chart Copy chart image Copy link Share to X Share


• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
Upgrade for signal details

Upgrade to see score, net flow, insiders and context.

Upgrade to see full signal details →

Insider trades have triggered activity signals for Greenbriar Sustainable Living Inc. Upgrade to see score, net flow, insiders and the full signal context.

Open in Activity Signals screener →
Top insiders
Trades
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
2.7
Conlan, Brian Director of Issuer Non-Executive Director
Transaction date
Purchase
Price
448.66
Quantity 34,123 +47.4%
Value US$947,549
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
230.07
Quantity 48,198 +26.4%
Value CA$3,790,939
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
325.91
Quantity 18,159 -39.4%
Value CA$396,256
2.7
Conlan, Brian Director of Issuer Non-Executive Director
Transaction date
Purchase
Price
0.55
Quantity 1,000 +0.2%
Value CA$100,000
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
0.78
Quantity 500 +0.0%
Value CA$390
2.7
Conlan, Brian Director of Issuer Non-Executive Director
Transaction date
Purchase
Price
0.47
Quantity 1,000 +1.0%
Value US$100,000
2.7
Conlan, Brian Director of Issuer Non-Executive Director
Transaction date
Purchase
Price
0.47
Quantity 8,000 +0.9%
Value US$3,760
2.7
Conlan, Brian Director of Issuer Non-Executive Director
Transaction date
Purchase
Price
0.52
Quantity 30,000 +3.3%
Value US$15,600
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
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-09-13 2026-09-01 B Purchase
2.7
Conlan, Brian

Director of Issuer

Non-Executive Director
34,123 +47.4%
448.66
US$947,549 		34,123 +47.4% 448.66 US$947,549
2026-09-10 2026-09-01 S Sale
2.4
Ciachurski, Jeffrey Joseph

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

Executive Director Large shareholder
48,198 +26.4%
230.07
CA$3,790,939 		48,198 +26.4% 230.07 CA$3,790,939
2026-09-10 2026-08-31 S Sale
2.4
Ciachurski, Jeffrey Joseph

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

Executive Director Large shareholder
18,159 -39.4%
325.91
CA$396,256 		18,159 -39.4% 325.91 CA$396,256
2026-09-13 2026-07-31 B Purchase
2.7
Conlan, Brian

Director of Issuer

Non-Executive Director
1,000 +0.2%
0.55
CA$100,000 		1,000 +0.2% 0.55 CA$100,000
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
500 +0.0%
0.78
CA$390 		500 +0.0% 0.78 CA$390
2026-09-13 2026-07-27 B Purchase
2.7
Conlan, Brian

Director of Issuer

Non-Executive Director
1,000 +1.0%
0.47
US$100,000 		1,000 +1.0% 0.47 US$100,000
2026-07-24 2026-07-24 B Purchase
2.7
Conlan, Brian

Director of Issuer

Non-Executive Director
8,000 +0.9%
0.47
US$3,760 		8,000 +0.9% 0.47 US$3,760
2026-07-24 2026-07-13 B Purchase
2.7
Conlan, Brian

Director of Issuer

Non-Executive Director
30,000 +3.3%
0.52
US$15,600 		30,000 +3.3% 0.52 US$15,600
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
Explore more

More insider trading research around Greenbriar Sustainable Living Inc

More insider trades in Canada
Similar Industrials companies with insider activity
More Industrial & Commercial Services companies with insider activity
More Construction & Engineering companies with insider activity
Insider trading in North America