Exhibit 1
JOINT FILING AGREEMENT
The undersigned hereby agree that the Statement on Schedule 13D, dated February 20, 2019, with respect to the ordinary shares of Alector, Inc.. is 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, as amended. Each of the undersigned agrees to be responsible for the timely filing of this Statement, and for the completeness and accuracy of the information concerning itself contained therein. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.
IN WITNESS WHEREOF, the undersigned have executed this Agreement as of the 20th day of February 2019.
ORBIMED ADVISORS LLC | |||
By: | /s/ Jonathan Silverstein | ||
Name: Jonathan Silverstein | |||
Title: Member of OrbiMed Advisors LLC | |||
ORBIMED CAPITAL LLC | |||
By: | /s/ Jonathan Silverstein | ||
Name: Jonathan Silverstein | |||
Title: Member | |||
ORBIMED CAPITAL GP IV LLC | |||
By: | ORBIMED ADVISORS LLC, its managing member | ||
By: | /s/ Jonathan Silverstein | ||
Jonathan Silverstein | |||
Member of OrbiMed Advisors LLC |