Adam Tomasi - May 10, 2021 Form 4 Insider Report for Allakos Inc. (ALLK)

Role: President and COO
Signature: /s/ Adam Tomasi
Stock symbol: ALLK
Transactions as of: May 10, 2021
Transactions value $: -$5,819,550
Form type: 4
Date filed: 5/13/2021, 06:00 AM
Next filing: Jun 7, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ALLK	Common Stock	Sale	-$1.98M	-20K	-11.55%	$99.23^*	153K	May 12, 2021	Direct	F1, F2
transaction	ALLK	Common Stock	Options Exercise	$13.8K	+20K	+13.06%	$0.69^*	173K	May 12, 2021	Direct	F2
transaction	ALLK	Common Stock	Sale	-$1.96M	-20K	-11.55%	$97.79^*	153K	May 11, 2021	Direct	F2, F3
transaction	ALLK	Common Stock	Options Exercise	$13.8K	+20K	+13.06%	$0.69^*	173K	May 11, 2021	Direct	F2
transaction	ALLK	Common Stock	Sale	-$1.92M	-20K	-11.55%	$96.02^*	153K	May 10, 2021	Direct	F2, F4
transaction	ALLK	Common Stock	Options Exercise	$13.8K	+20K	+13.06%	$0.69^*	173K	May 10, 2021	Direct	F2
holding	ALLK	Common Stock						3.95K	May 10, 2021	See footnote	F5, F6

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	-20K	-3.66%	$0.00	526K	May 12, 2021	Common Stock	20K	$0.69	Direct	F7
transaction	ALLK	Stock Option (Right to buy)	Options Exercise	$0	-20K	-3.53%	$0.00	546K	May 11, 2021	Common Stock	20K	$0.69	Direct	F7
transaction	ALLK	Stock Option (Right to buy)	Options Exercise	$0	-20K	-3.41%	$0.00	566K	May 10, 2021	Common Stock	20K	$0.69	Direct	F7

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

Explanation of Responses:

Id	Content
F1	This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 18, 2020. This transaction was executed in multiple trades at prices ranging from $96.76 to $100.83 per share. The sale price reported represents the weighted average sale price . Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person hereby undertakes to provide full information regarding the number of shares sold at each separate price.
F2	Includes shares of common stock purchased under the Company's 2018 Employee Stock Purchase Plan.
F3	This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 18, 2020. This transaction was executed in multiple trades at prices ranging from $90.73 to $101.71 per share. The sale price reported represents the weighted average sale price . Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person hereby undertakes to provide full information regarding the number of shares sold at each separate price.
F4	This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 18, 2020. This transaction was executed in multiple trades at prices ranging from $94.91 to $98.41 per share. The sale price reported represents the weighted average sale price . Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person hereby undertakes to provide full information regarding the number of shares sold at each separate price.
F5	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.
F6	The shares are held by Mr. Tomasi and Carrie Tomasi, as Trustees of the Tomasi Living Trust dated July 14, 2017.
F7	On May 17, 2017, the Reporting Person was granted an option to purchase 706,400 ordinary shares pursuant to the Company's 2012 Equity Incentive Plan. The option vests as to one-fourth of the shares on May 17, 2018, 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.