Jane Street’s FirstMark Horizon Acquisition Corp. Units, each consisting of one share of Class A common stock and FMAC.U Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Shares Change %	Capital Flow	Portfolio Weight	Portfolio Position
2021 Q1	–	Sell	-300,000	Closed	-$3.42M	–	5627
2020 Q4	$3.42M	Buy	+300,000	New	+$3.42M	﹤0.01%	972