Parsons Corporation
A provider of advanced technology and infrastructure services, Parsons helps U.S. government agencies with cyber, space, and missile defense work while engineering transportation, water, and urban projects worldwide. Founded in 1944 by aeronautical engineer Ralph M. Parsons, the company began with post-war reconstruction and Cold War missile facilities. Its employees once owned the entire firm—the 1984 shift to employee ownership was reported as the largest such buyout in U.S. history.
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.