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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1626199	Alpine Immune Sciences Inc.	ALPN	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1606243	Paul James Rickey	C/O Alpine Immune Sciences, Inc. 188 East Blaine Street, Suite 200 Seattle WA 98102	See Remarks	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2023-11-30	700	$3.23	700	No	4	M	Direct
Common Stock	Disposition	2023-11-30	700	$16.00	0	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Option (Right to buy)	Disposition	2023-11-30	700	$0.00	700	$3.23

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
90,311		2030-01-22	No	4	M	Direct

Footnotes

The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 12, 2023.
Twenty-five percent (25%) of the shares subject to the Option shall vest on the one (1) year anniversary of January 23, 2020 (the "Vesting Commencement Date") and one forty-eighth (1/48th) of the shares subject to the Option shall vest each month thereafter on the same day of the month as the Vesting Commencement Date (and if there is no corresponding day, on the last day of the month), subject to the Reporting Person continuing to be a Service Provider through each such date.