Peng Stanford L

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
20 May 24	ALPN Alpine Immune Sciences	Common Stock	Sale back to company	Dispose D	No	No	0	48,000	0.00	0
20 May 24	ALPN Alpine Immune Sciences	Common Stock	Sale back to company	Dispose D	No	No	0	296,163	0.00	48,000
20 May 24	ALPN Alpine Immune Sciences	Stock Option Common Stock	Sale back to company	Dispose D	No	No	18.33	120,000	2.20 mm	0
20 May 24	ALPN Alpine Immune Sciences	Stock Option Common Stock	Sale back to company	Dispose D	No	No	7.55	150,000	1.13 mm	0
20 May 24	ALPN Alpine Immune Sciences	Stock Option Common Stock	Sale back to company	Dispose D	No	No	13.3	215,000	2.86 mm	0
20 May 24	ALPN Alpine Immune Sciences	Stock Option Common Stock	Sale back to company	Dispose D	No	No	13.2	142,975	1.89 mm	0
20 May 24	ALPN Alpine Immune Sciences	Stock Option Common Stock	Sale back to company	Dispose D	No	No	3.23	81,088	261.91 k	0
20 May 24	ALPN Alpine Immune Sciences	Stock Option Common Stock	Sale back to company	Dispose D	No	No	7.2	50,000	360.00 k	0
20 May 24	ALPN Alpine Immune Sciences	Stock Option Common Stock	Sale back to company	Dispose D	No	No	6.51	71,874	467.90 k	0
20 May 24	ALPN Alpine Immune Sciences	Stock Option Common Stock	Sale back to company	Dispose D	No	No	6.33	236,623	1.50 mm	0

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