Exhibit 1

JOINT FILING AGREEMENT

The undersigned hereby agree that the statement on Schedule 13D with respect to the Class A common stock, par value $0.00001 of Seer, Inc., dated as of January 11, 2021, is, and any amendments thereto (including amendments on Schedule 13D) signed by each of the undersigned shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934.

Dated: January 11, 2021

MCV MANAGEMENT COMPANY, LLC
By:	Lee S. Ainslie III, Manager
By:	/s/ Mark Gurevich
	Mark Gurevich
	Under Power of Attorney dated March 15, 2018
MAVERICK CAPITAL MANAGEMENT, LLC
By:	Lee S. Ainslie III, Manager
By:	/s/ Mark Gurevich
	Mark Gurevich
	Under Power of Attorney dated March 15, 2018
MAVERICK VENTURES INVESTMENT FUND, L.P.
By:	Maverick Capital Ventures, LLC, its general partner
By:	Lee S. Ainslie III, Manager
By:	/s/ Mark Gurevich
	Mark Gurevich
	Under Power of Attorney dated March 15, 2018
MAVERICK ADVISORS FUND, L.P.
By:	Maverick Capital Ventures, LLC, its general partner
By:	Lee S. Ainslie III, Manager
By:	/s/ Mark Gurevich
	Mark Gurevich
	Under Power of Attorney dated March 15, 2018
MAVERICK CAPITAL VENTURES, LLC
By:	Lee S. Ainslie III, Manager
By:	/s/ Mark Gurevich
	Mark Gurevich
	Under Power of Attorney dated March 15, 2018

MAVERICK CAPITAL ADVISORS, L.P.
By:	/s/ Mark Gurevich
	Mark Gurevich
MAVERICK CAPITAL, LTD.
By:	/s/ Mark Gurevich
	Mark Gurevich
LEE S. AINSLE III
By:	/s/ Mark Gurevich
	Mark Gurevich
	Under Power of Attorney dated March 15, 2018
DAVID B. SINGER
By:	/s/ Mark Gurevich
	Mark Gurevich
	Under Power of Attorney dated January 7, 2021
ANDREW H. WARFORD
By:	/s/ Mark Gurevich
	Mark Gurevich
	Under Power of Attorney dated March 16, 2018