| Nuclear Threat Initiative |
Co-Founder and Co-Chair |
2021-10-19 |
2026-01-01 |
board member |
[1], [2], [3] |
|
| Nuclear Threat Initiative |
Strategic Advisor |
2021-10-19 |
2023-05-16 |
advisor |
[1], [4], [5], [6] |
Strategic Advisor title last observed May 16 and omitted from subsequent listings; board leadership continues. |
| Nuclear Threat Initiative |
Founding Co-Chair |
2026-02-01 |
2026-05-01 |
board member |
[2], [3], [7], [8] |
|
| Nuclear Threat Initiative |
Founding Chair |
2026-06-08 |
2026-08-02 |
board member |
[7], [8], [9], [10] |
|
| Nuclear Threat Initiative |
Co-Founder and Chair Emeritus |
2026-10-29 |
|
board member |
[9], [10] |
Remains listed in the active Board of Directors section. |