Insider Profile
Ciachurski, Jeffrey Joseph
$GRB
1
Companies Filed At
10
Open-Market Buys (2yr)
$6K
Buy Value (2yr, open-market)
Jun 29, 2026
Most Recent Trade
Currently Accumulating Companies this insider is net-buying on the open market over the last 90 days
$GRB 50
Greenbriar Sustainable Living Inc.
$2K · 4 buys
Last buy Jun 29, 2026
Date Company Role Nature Dir. Shares Price Value Score
Jun 29, 2026 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 700 $0.77 $539 50
Jun 18, 2026 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 500 $0.65 $325 50
Jun 17, 2026 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 1,100 $0.59 $649 50
May 29, 2026 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 1,000 $0.55 $550 50
May 19, 2026 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 1,000 $0.58 $580 50
May 15, 2026 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 1,000 $0.59 $590 50
Apr 28, 2026 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 1,000 $0.50 $500 50
Apr 02, 2026 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 3,000 $0.40 $1K 50
Mar 05, 2026 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 1,000 $0.54 $535 50
Oct 14, 2025 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 2,000 $0.44 $880 50
Dec 31, 2021 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 4,000 $1.40 $6K 50
Mar 29, 2021 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 8,700 $1.58 $14K 50
Mar 29, 2021 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 1,300 $1.60 $2K 50
Mar 12, 2021 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 1,000 $1.54 $2K 50
Mar 12, 2021 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 500 $1.53 $765 50
Mar 12, 2021 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 500 $1.52 $760 50
Mar 03, 2021 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 2,000 $1.62 $3K 50
Feb 18, 2021 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 11,000 $2.00 $22K 50
Feb 10, 2021 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 1,000 $2.37 $2K 50
Jan 25, 2021 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 1,000 $2.99 $3K 50
Jan 25, 2021 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 50,000 $3.00 $150K 50
Jan 21, 2021 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 2,300 $2.45 $6K 50
Jan 20, 2021 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 5,000 $2.40 $12K 50
Jan 20, 2021 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 10,000 $2.39 $24K 50
Jan 18, 2021 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 2,600 $2.00 $5K 50
Jan 14, 2021 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 6,800 $1.61 $11K 50
Jan 14, 2021 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 400 $1.63 $652 50
Jan 14, 2021 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 7,000 $1.66 $12K 50
Jan 14, 2021 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 100 $1.62 $162 50
Dec 17, 2020 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 1,500 $1.88 $3K 50
Dec 15, 2020 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 6,000 $1.87 $11K 50
Dec 01, 2020 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 8,700 $1.30 $11K 50
Dec 01, 2020 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 11,300 $1.36 $15K 50
Nov 13, 2020 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 500 $1.44 $720 50
Nov 13, 2020 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 1,500 $1.43 $2K 50
Nov 11, 2020 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 36,900 $1.25 $46K 50
Nov 11, 2020 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 1,700 $1.23 $2K 50
Nov 11, 2020 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 1,400 $1.24 $2K 50
Nov 09, 2020 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 10,000 $1.27 $13K 50
Oct 28, 2020 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 10,000 $1.50 $15K 50
Oct 16, 2020 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 10,000 $1.49 $15K 50
Oct 01, 2020 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 5,000 $2.00 $10K 50
Sep 15, 2020 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 1,000 $2.04 $2K 50
Sep 11, 2020 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 1,000 $2.05 $2K 50
Sep 08, 2020 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 500 $2.02 $1K 50
Sep 08, 2020 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 1,000 $2.01 $2K 50
Sep 04, 2020 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 1,000 $2.02 $2K 50
Sep 02, 2020 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 5,000 $2.09 $10K 50
Jul 30, 2020 $GRB
Greenbriar Sustainable Living Inc.
— Open Market Buy 12,000 $2.00 $24K 50
Muted rows are plan purchases, compensation grants, or DRIP — not open-market. Confluence Scores reflect the company's current score, not the score at time of trade.
Form55 provides data and analysis for informational purposes only. Nothing on this site constitutes investment advice or a recommendation to buy or sell any security. Past performance is not indicative of future results.