144 0001885857 XXXXXXXX LIVE 0001405495 INTERDIGITAL, INC. 001-33579 200 Bellevue Parkway, Suite 300 Wilmington DE 19809 (302) 281-3600 EEVA HAKORANTA Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 38th Floor New York NY 10004

2550 209380.50 26407096 09/19/2023 NASDAQ COMMON 03/15/2023 Performance Shares ISSUER N 1800 03/15/2023 Not Applicable COMMON 03/15/2023 Restricted Stock ISSUER N 750 03/15/2023 Not Applicable Y 09/19/2023 06/20/2023 /s/ Eeva Kaarina Hakoranta