The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Greffen Mark since 2021.
This trader's CIK number is 1788915.
At the time of last reporting, Greffen Mark was the Chief Technology Officer of Dirtt Environmental Solutions Ltd. (stock ticker symbol DRTT).
Also see all insider trading activities at Dirtt Environmental Solutions Ltd.
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2023 | DRTT | 0 | $0 | 26,176 | $9,685 | 63,250 | $0 |
| 2022 | DRTT | 0 | $0 | 0 | $0 | 83,268 | $0 |
| 2021 | DRTT | 0 | $0 | 0 | $0 | 57,777 | $0 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2023-05-15 | DRTT | Sale | 26,176 | .37 | 9,685 |
| 2023-03-01 | DRTT | Option Ex | 63,250 | .00 | 0 |
| 2022-06-17 | DRTT | Option Ex | 57,778 | .00 | 0 |
| 2022-03-01 | DRTT | Option Ex | 25,490 | .00 | 0 |
| 2021-06-17 | DRTT | Option Ex | 57,777 | .00 | 0 |
Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Greffen Mark (Chief Technology Officer of Dirtt Environmental Solutions Ltd at the time of this reporting) see the Securities and Exchange Commission (SEC) website.