| Quarter | Name | Total no. shares held | Percent Holding | Pledged | Locked | ||
|---|---|---|---|---|---|---|---|
| shares | % | shares | % | ||||
| Sep 2021 | Employees' Retirement Plan Of Duke University | 110,315 | 1.28% | 0 | 0.00% | 0 | 0.00% |
| Jun 2021 | Employees' Retirement Plan Of Duke University | 110,315 | 1.28% | 0 | 0.00% | 0 | 0.00% |
| Mar 2021 | Employees' Retirement Plan Of Duke University | 110,315 | 1.28% | 0 | 0.00% | 0 | 0.00% |
| Dec 2020 | Employees' Retirement Plan Of Duke University | 110,315 | 1.28% | 0 | 0.00% | 0 | 0.00% |