Stanford L. Peng - 08 May 2024 Form 4 Insider Report for ALPINE IMMUNE SCIENCES, INC.

Role: Officer
Signature: /s/ James Paul Rickey, attorney-in-fact
Issuer symbol: N/A
Transactions as of: 08 May 2024
Net transactions value: +$669,403
Form type: 4
Filing time: 10 May 2024, 19:26:52 UTC
Previous filing: 05 Jan 2024
Next filing: 20 May 2024
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ALPN	Common Stock	Options Exercise	$92,730	+7,025	+9.7%	$13.20	79,396	08 May 2024	Direct	F1
transaction	ALPN	Common Stock	Options Exercise	$20,350	+3,126	+3.9%	$6.51	82,522	08 May 2024	Direct
transaction	ALPN	Common Stock	Options Exercise	$24,224	+37,267	+45%	$0.6500^*	119,789	08 May 2024	Direct
transaction	ALPN	Common Stock	Options Exercise	$104,970	+161,492	+135%	$0.6500^*	281,281	08 May 2024	Direct
transaction	ALPN	Common Stock	Options Exercise	$255,527	+22,593	+8%	$11.31	303,874	08 May 2024	Direct
transaction	ALPN	Common Stock	Options Exercise	$86,926	+26,912	+8.9%	$3.23^*	330,786	08 May 2024	Direct
transaction	ALPN	Common Stock	Options Exercise	$84,676	+13,377	+4%	$6.33	344,163	08 May 2024	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ALPN	Stock Option (Right to buy)	Options Exercise	$0	-7,025	-4.7%	$0.000000	142,975	08 May 2024	Common Stock	7,025	$13.20	Direct	F2, F3
transaction	ALPN	Stock Option (Right to buy)	Options Exercise	$0	-3,126	-4.2%	$0.000000	71,874	08 May 2024	Common Stock	3,126	$6.51	Direct	F2, F4
transaction	ALPN	Stock Option (Right to buy)	Options Exercise	$0	-37,267	-100%	$0.000000^*	0	08 May 2024	Common Stock	37,267	$0.6500	Direct	F2, F5
transaction	ALPN	Stock Option (Right to buy)	Options Exercise	$0	-161,492	-100%	$0.000000^*	0	08 May 2024	Common Stock	161,492	$0.6500	Direct	F2, F5
transaction	ALPN	Stock Option (Right to buy)	Options Exercise	$0	-22,593	-35%	$0.000000	42,407	08 May 2024	Common Stock	22,593	$11.31	Direct	F2, F6
transaction	ALPN	Stock Option (Right to buy)	Options Exercise	$0	-26,912	-25%	$0.000000	81,088	08 May 2024	Common Stock	26,912	$3.23	Direct	F2, F7
transaction	ALPN	Stock Option (Right to buy)	Options Exercise	$0	-13,377	-5.4%	$0.000000	236,623	08 May 2024	Common Stock	13,377	$6.33	Direct	F2, F8

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Includes 48,000 shares of common stock underlying a restricted stock unit grant made on January 4, 2024.
F2	The exercise price is equal to the closing price per share of Common Stock as reported on the Nasdaq Global Market on the date of grant.
F3	One-fourth (1/4) of the shares subject to the option will vest on January 5, 2022, and one thirty-sixth (1/36th) of the remaining shares subject to the option shall vest each month thereafter, subject to Reporting Person continuing to be a service provider through each such date.
F4	One-fourth (1/4) of the shares subject to the option will vest on February 6, 2020, and one thirty-sixth (1/36th) of the remaining shares subject to the option shall vest each month thereafter, subject to Reporting Person continuing to be a service provider through each such date.
F5	One-fourth (1/4) of the shares subject to the option will vest on September 6, 2017, and one thirty-sixth (1/36th) of the remaining shares subject to the option shall vest each month thereafter, subject to Reporting Person continuing to be a service provider through each such date.
F6	One-fourth (1/4) of the shares subject to the option will vest on January 2, 2019, and one thirty-sixth (1/36th) of the remaining shares subject to the option shall vest each month thereafter, subject to Reporting Person continuing to be a service provider through each such date.
F7	One-fourth (1/4) of the shares subject to the option will vest on January 23, 2021, and one thirty-sixth (1/36th) of the remaining shares subject to the option shall vest each month thereafter, subject to Reporting Person continuing to be a service provider through each such date.
F8	1/2 of the shares subject to the option become vested and exercisable on October 1, 2020 and the balance of the shares subject to the option become vested and exercisable on October 1, 2022, subject to continued service through each such date.