Shell Oil Company
Ownership
Shell Oil Company is ultimately owned by Royal Dutch Shell .
…and Royal Dutch Shell is itself held by
- BlackRock 7.6%
- BlackRock, Inc. 7.6%
- The Vanguard Group 4.8%
- Norges Bank Investment Management 3.0%
- State Street Corporation 1.3%
- Geode Capital Management 0.7%
Brands Shell Oil Company owns
These are brand names rather than separate companies, so they have no owner of their own beyond Shell Oil Company.
Also owned by Royal Dutch Shell
Sakhalin Energy 
Shell V-Power 
Quaker State Similar companies
In Oil & Gas, under different ownership.
Rosneft Websites
- shell.us
Sources
- Shell USA — Wikidata