Longitude Prime Partners, LLC - Jan 31, 2022 Form 3 Insider Report for Sierra Oncology, Inc. (SRRA)

Role: 10%+ Owner
Signature: Longitude Prime Partners, LLC, By: /s/ Patrick Enright, Managing Member
Stock symbol: SRRA
Transactions as of: Jan 31, 2022
Transactions value $: $0
Form type: 3
Date filed: 2/2/2022, 08:22 PM
Previous filing: Jul 20, 2021
Next filing: Feb 8, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	SRRA	Common Stock						175K	Jan 31, 2022	See footnote	F1, F2

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

Explanation of Responses:

Id	Content
F1	Not included on this Form 3 are an additional 1,964,771 shares of Common Stock held by Longitude Venture Partners III, L.P. ("LVP III"). LVP III, Longitude Capital Partners III, LLC, Patrick G. Enright, Juliet Tammenoms Bakker and Joshua Richardson, a member of the Issuer's board of directors, have separately filed Form 4s in connection with the acquisition of the shares of Common Stock described in this Form.
F2	The securities are held directly by Longitude Prime Fund, L.P. ("LPF"). Longitude Prime Partners, LLC ("LPP"), the general partner of LPF, may be deemed to have voting and investment power with respect to the shares held by LPF. Patrick G. Enright, Juliet Tammenoms Bakker and Joshua Richardson, a member of the Issuer's board of directors, are each members of LPF and may be deemed to share voting, investment and dispositive power over such securities. Mr. Enright and Ms. Tammenoms Bakker are the managing members of LPP. Each of Mr. Enright, Ms. Tammenoms Bakker and Dr. Richardson disclaim beneficial ownership of such shares except to the extent of their respective pecuniary interests therein.

Content

Not included on this Form 3 are an additional 1,964,771 shares of Common Stock held by Longitude Venture Partners III, L.P. ("LVP III"). LVP III, Longitude Capital Partners III, LLC, Patrick G. Enright, Juliet Tammenoms Bakker and Joshua Richardson, a member of the Issuer's board of directors, have separately filed Form 4s in connection with the acquisition of the shares of Common Stock described in this Form.

The securities are held directly by Longitude Prime Fund, L.P. ("LPF"). Longitude Prime Partners, LLC ("LPP"), the general partner of LPF, may be deemed to have voting and investment power with respect to the shares held by LPF. Patrick G. Enright, Juliet Tammenoms Bakker and Joshua Richardson, a member of the Issuer's board of directors, are each members of LPF and may be deemed to share voting, investment and dispositive power over such securities. Mr. Enright and Ms. Tammenoms Bakker are the managing members of LPP. Each of Mr. Enright, Ms. Tammenoms Bakker and Dr. Richardson disclaim beneficial ownership of such shares except to the extent of their respective pecuniary interests therein.