Exhibit 99.1
JOINT FILERS’ SIGNATURES
ESSETIFIN S.P.A.
By:/s/ Marino Zigrossi
Name: Marino Zigrossi
Title: Managing Director
Date:May 4, 2020
Enrico Cavazza
By:/s/ Marino Zigrossi
Name: Marino Zigrossi
Title: Attorney-in-fact
Date:May 4, 2020
Francesca Cavazza
By:/s/ Marino Zigrossi
Name: Marino Zigrossi
Title: Attorney-in-fact
Date:May 4, 2020
Silvia Cavazza
By:/s/ Marino Zigrossi
Name: Marino Zigrossi
Title: Attorney-in-fact
Date:May 4, 2020
Martina Cavazza Preta
By:/s/ Marino Zigrossi
Name: Marino Zigrossi
Title: Attorney-in-fact
Date:May 4, 2020
Paolo Cavazza
By:/s/ Fabio Poma
Name: Fabio Poma
Title: Attorney-in-fact
Date:May 4, 2020