Joseph Sinkule
Chief Executive Officer at Greenland Mines Ltd.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 1 year
- Director since
- 2025
1 year of board service in total across 1 board, counting each seat separately. Longest: Greenland Mines Ltd., 1 year.
Chief executive roles
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Mar 4, 2026 | Greenland Mines Ltd. | Grant or award | +2,500,000 | — | — |
| Sep 25, 2025 | Greenland Mines Ltd. | Other | +400,000 | — | — |
| Aug 5, 2025 | Greenland Mines Ltd. | Grant or award | +537,180 | — | — |
| Jul 22, 2025 | Greenland Mines Ltd. | Other | −2,000,000 | — | — |
Questions about Joseph Sinkule
What boards is Joseph Sinkule on?
Joseph Sinkule sits on the board of Greenland Mines Ltd.
What company is Joseph Sinkule the CEO of?
Joseph Sinkule is Chief Executive Officer of Greenland Mines Ltd.
How long has Joseph Sinkule served on boards?
Our records show at least 1 year of board service across 1 board, the earliest from 2025.
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