Corporate Board Profile
Filing Date | Source Excerpt |
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2009-04-23 | Mr. Hemminghaus is the retired Chairman and Chief Executive Officer of Ultramar Diamond Shamrock Corporation. |
2010-04-20 | Mr. Hemminghaus is the retired Chairman and Chief Executive Officer of Ultramar Diamond Shamrock Corporation, a corporation that refined and marketed petroleum products. |
2011-04-19 | Mr. Hemminghaus is the retired Chairman and Chief Executive Officer of Ultramar Diamond Shamrock Corporation. |
Data sourced from SEC filings. Last updated: 2025-04-15