| 100% | EXXON | 5 | Gas company that merged with Mobil |
| 81% | EXXON | 5 | Oil company that merged with Mobil |
| 78% | EXXON | 5 | Company that merged with Mobil in 1999 |
| 77% | AMOCO | 5 | Gas company that merged with BP in 1998 |
| 77% | CONOCO | 6 | Gas company that merged with Phillips in 2002 |
| 71% | MICROBIOLOGY | 12 | Course on tiny organisms, attended by representatives of a gas company that merged with Exxon |
| 63% | MINOLTA | 7 | Company that merged with Konica |
| 63% | AMOCO | 5 | Company that merged with BP, 1998 |
| 62% | AMOCO | 5 | Company that merged with BP in 1998 |
| 62% | ERICSSON | 8 | Company that merged with Sony in 2001 |
| 62% | DAIMLER | 7 | Company that merged with Benz in 1926 |
| 62% | KRAFT | 5 | Company that merged with Heinz in 2015 |
| 62% | MOBIL | 5 | Company that merged with Exxon in 1999 |
| 62% | SEAMLESS | 8 | Company that merged with Grubhub in 2013 |
| 62% | TMOBILE | 7 | Company that merged with Sprint in 2020 |
| 61% | AOL | 3 | Company that merged with Time Warner in 2000 |
| 61% | AOL | 3 | Company that merged with Time Warner in 2001 |
| 61% | AMOCO | 5 | Oil company that merged with BP |
| 61% | DOW | 3 | Chemical company that merged with DuPont |
| 61% | MOBIL | 5 | Oil company that merged with Exxon |
| 60% | MARTINMARIETTA | 14 | Company that merged with Lockheed in 1995 (2001, 2003) |
| 60% | TCI | 3 | Cable company that merged with AT&T |
| 60% | SCOTTS | 6 | Lawn service company that merged with TruGreen |
| 60% | EXXON | 5 | Oil corporation that merged with Mobil in 1999 |
| 60% | EXXON | 5 | Oil giant that merged with Mobil in 1999 |
| 60% | AMOCO | 5 | Oil company that merged with BP in 1998 |
| 60% | KRAFT | 5 | Food company that merged with Heinz in 2015 |
| 60% | COORS | 5 | Beer company that merged with Molson in 2005 |
| 60% | MOBIL | 5 | Oil company that merged with Exxon in 1999 |
| 59% | AMOCO | 5 | Gas brand that merged with BP |