EcoR1 Capital, LLC - Dec 18, 2023 Form 3 Insider Report for Mirati Therapeutics, Inc. (MRTX)

Role: 10%+ Owner
Signature: /s/ Oleg Nodelman, Manager of EcoR1 Capital, LLC
Stock symbol: MRTX
Transactions as of: Dec 18, 2023
Transactions value $: $0
Form type: 3
Date filed: 12/27/2023, 04:04 PM
Previous filing: Oct 16, 2023
Next filing: Dec 28, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	MRTX	Common Stock						7.4M	Dec 18, 2023	See Note	F1

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

Explanation of Responses:

Id	Content
F1	The filing persons (the "Filers") are EcoR1 Capital, LLC ("EcoR1") and Oleg Nodelman. EcoR1 is the general partner and investment adviser of private funds (collectively, the "Funds"). Mr. Nodelman is the manager and controlling owner of EcoR1. EcoR1 is filing this Form 3 for itself and Mr. Nodelman. The Filers are filing this Form 3 jointly, but not as a group, and each expressly disclaims membership in a group, within the meaning of Rule 13d-5(b) under the Securities Exchange Act of 1934, as amended. The Funds hold these securities directly for the benefit of their investors. EcoR1 indirectly beneficially owns them as the investment adviser to the Funds, and Mr. Nodelman indirectly beneficially owns them as the control person of EcoR1. The Filers disclaim beneficial ownership of such securities except to the extent of their respective pecuniary interests therein.

Content

The filing persons (the "Filers") are EcoR1 Capital, LLC ("EcoR1") and Oleg Nodelman. EcoR1 is the general partner and investment adviser of private funds (collectively, the "Funds"). Mr. Nodelman is the manager and controlling owner of EcoR1. EcoR1 is filing this Form 3 for itself and Mr. Nodelman. The Filers are filing this Form 3 jointly, but not as a group, and each expressly disclaims membership in a group, within the meaning of Rule 13d-5(b) under the Securities Exchange Act of 1934, as amended. The Funds hold these securities directly for the benefit of their investors. EcoR1 indirectly beneficially owns them as the investment adviser to the Funds, and Mr. Nodelman indirectly beneficially owns them as the control person of EcoR1. The Filers disclaim beneficial ownership of such securities except to the extent of their respective pecuniary interests therein.