Another perspective:
"What people are missing is in plain sight: Sokol bought the stock with a "free option" not available to the public. If WB bit and bid for LZ, Sokol wins big (whether the likelihood was 5% or 50% does not matter), but if WB did not bite and passed, then Sokol would have non-public information that BRK would NOT be interested in LZ. In the latter hypothetical, any sale of LZ shares would then be an insider trade. A win/win situation for Sokol - last I checked, those are not available to the public." from reader Zero Hedge