Adam Tomasi - Aug 31, 2021 Form 4 Insider Report for Allakos Inc. (ALLK)

Role: President and COO
Signature: /s/ Adam Tomasi
Stock symbol: ALLK
Transactions as of: Aug 31, 2021
Transactions value $: $276,638
Form type: 4
Date filed: 9/2/2021, 08:30 PM
Previous filing: Jun 16, 2021
Next filing: Sep 7, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ALLK	Common Stock	Options Exercise	$277K	+64.1K	+43.28%	$4.31	212K	Aug 31, 2021	Direct
holding	ALLK	Common Stock						3.95K	Aug 31, 2021	See footnote	F1, F2

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	ALLK	Stock Option (Right to buy)	Options Exercise	$0	-64.1K	-42.15%	$0.00	88K	Aug 31, 2021	Common Stock	64.1K	$4.31	Direct	F3

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

Explanation of Responses:

Id	Content
F1	Includes 3,953 shares received as a pro-rata in-kind distribution of Common Stock of the Issuer by Alta Partners Management VIII, LLC (APM VIII), without consideration, to the reporting person as a non-managing member of APM VIII.
F2	The shares are held by Mr. Tomasi and Carrie Tomasi, as Trustees of the Tomasi Living Trust dated July 14, 2017.
F3	On May 15, 2018, the Reporting Person was granted an option to purchase 157,600 ordinary shares pursuant to the Company's 2018 Equity Incentive Plan. The option vests as to one-fourth of the shares on May 15, 2019, and one forty-eighth of the shares subject to the option vest each month thereafter, subject to the Reporting Person continuing as a service provider through each such date.