Corporate Board Profile
Tech Score: 0/100
| Filing Date | Source Excerpt |
|---|---|
| 2016-04-29 | Mr. Brinkerhoff has participated, and continues to participate, in a number of business interests. |
| 2017-05-08 | Mr. Brinkerhoff founded a Native American-owned joint venture, Doyon Drilling Inc. J.V., in 1981 and served as its operations Chief Executive Officer and Chief Financial Officer until selling his venture interests in 1992. |
| 2018-04-30 | Mr. Brinkerhoff founded a Native American-owned joint venture, Doyon Drilling Inc. J.V., and served as its operations CEO and CFO. |
| 2019-04-30 | Mr. Brinkerhoff has participated, and continues to participate, in a number of business interests. |
Data sourced from SEC filings. Last updated: 2026-02-03