SEC Form 4: Gilchrist Malcolm Ian Grant sold $105,240 worth of Series C Liberty Formula One Common Stock (1,719 units at $61.22), sold $99,898 worth of Series C Liberty SiriusXM Common Stock (2,050 units at $48.73), exercised 2,804 units of Series C Liberty Formula One Common Stock at a strike of $23.69 and covered exercise/tax liability with 1,085 units of Series C Liberty Formula One Common Stock, increasing direct ownership by 79% to 2,657 units