Exhibit 99.1
JOINT FILING AGREEMENT
The undersigned hereby agree that a single Schedule 13G (or any amendment thereto) relating to the Class A Common Stock of Duolingo, Inc. shall be filed on behalf of each of the undersigned and that this Agreement shall be filed as an exhibit to such Schedule 13G.
Date: February 14, 2022
CAPITALG 2014 LP
By: CapitalG 2014 GP LLC
its General Partner
By: /s/ Bryan Keighery
Name: Bryan Keighery
Title: Attorney-in-fact
CAPITALG 2014 GP LLC
By: /s/ Bryan Keighery
Name: Bryan Keighery
Title: Attorney-in-fact
CAPITALG 2015 LP
By: CapitalG 2015 GP LLC
its General Partner
By: /s/ Bryan Keighery
Name: Bryan Keighery
Title: Attorney-in-fact
CAPITALG 2015 GP LLC
By: /s/ Bryan Keighery
Name: Bryan Keighery
Title: Attorney-in-fact
CAPITALG II LP
By: CapitalG II GP LLC
its General Partner
By: /s/ Bryan Keighery
Name: Bryan Keighery
Title: Attorney-in-fact
CAPITALG II GP LLC
By: /s/ Bryan Keighery
Name: Bryan Keighery
Title: Attorney-in-fact
ALPHABET HOLDINGS LLC
By: /s/ Bryan Keighery
Name: Bryan Keighery
Title: Attorney-in-fact
ALPHABET INC.
By: /s/ Bryan Keighery
Name: Bryan Keighery
Title: Attorney-in-fact