David R. Horn

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
4 Oct 24	SEER Seer	Employee Stock Option Class A Common Stock	Grant	Acquire A	No	No	2	140,000	280.00 k	140,000
4 Oct 24	SEER Seer	Employee Stock Option Class A Common Stock	Sale back to company	Dispose D	No	No	4.59	140,000	642.60 k	0
4 Oct 24	SEER Seer	Employee Stock Option Class A Common Stock	Grant	Acquire A	No	No	2	124,000	248.00 k	124,000
4 Oct 24	SEER Seer	Employee Stock Option Class A Common Stock	Sale back to company	Dispose D	No	No	16.61	124,000	2.06 mm	0
4 Oct 24	SEER Seer	Employee Stock Option Class A Common Stock	Grant	Acquire A	No	No	2	34,125	68.25 k	34,125
4 Oct 24	SEER Seer	Employee Stock Option Class A Common Stock	Sale back to company	Dispose D	No	No	60.15	34,125	2.05 mm	0
4 Oct 24	SEER Seer	Employee Stock Option Class A Common Stock	Grant	Acquire A	No	No	2	135,100	270.20 k	135,100
4 Oct 24	SEER Seer	Employee Stock Option Class A Common Stock	Sale back to company	Dispose D	No	No	19	135,100	2.57 mm	0
4 Oct 24	SEER Seer	Employee Stock Option Class A Common Stock	Grant	Acquire A	No	No	2	20	40.00	20
4 Oct 24	SEER Seer	Employee Stock Option Class A Common Stock	Sale back to company	Dispose D	No	No	3.47	20	69.40	0

Data from 3, 4 and 5 filings. Values as filed, not updated for current price.