Oil States International, Inc
A maker of engineered equipment and services for offshore drilling, well completion, and downhole work, Oil States International supplies products like its FlexJoint® connectors and Tempress tools to energy, military, and industrial customers around the world. It began in 1942 as the Grand Prairie Rubber Company in Texas, started by "Slim" Bowerman with four employees making rubber parts for the oil patch. Its FlexJoint, introduced in 1976, was the critical seal used to cap the Macondo well after the 2010 Deepwater Horizon disaster.
Estimated from filings — the split-adjusted price range over the quarters each manager built the position. A range, not a fill price; 13F reports a quarter-end snapshot, not a trade date.