EXHIBIT 1
Pursuant to Rule13d-1(k)(1) under the Securities Exchange Act of 1934, the undersigned hereby agree that only one statement containing the information required by Schedule 13G need be filed with respect to the ownership by each of the undersigned of shares of Common Stock of Spero Therapeutics, Inc.
Date: January 31, 2020
LUNDBECKFOND INVEST A/S | ||
By: | /s/ Lene Skole | |
Name: Lene Skole | ||
Title: Chief Executive Officer &Attorney-in-Fact* | ||
By: | /s/ Mette Kirstine Agger | |
Name: Mette Kirstine Agger | ||
Title:Attorney-in-Fact* | ||
LENE SKOLE | ||
/s/ Lene Skole | ||
CASPER BREUM | ||
/s/ Casper Breum |
This Schedule 13G was executed by Lene Skole and Mette Kristine Agger on behalf of the entity listed above, as indicated, pursuant to that certain Power of Attorney, a copy of which is already on file with the appropriate agencies. |