Collating a list of mysteriously murdered CEOs and high ranking engineers since 1998.
The death of this engineer for EarthLink at 18 (while he also studied at MIT) and which allegedly involved a religious cult based in Oregon, is a good place to start.
Only about 2.5% of suicides are jumping to ones death also (although the percentage is double for women, and this number is US suicides in 2018 keep in mind).