X0306 4 2020-09-16 0 0000798354 FISERV INC FISV 0001207371 YABUKI JEFFERY W 255 FISERV DRIVE BROOKFIELD WI 53045 1 1 0 0 Executive Chairman Common Stock 2020-09-16 4 S 0 1700 101.34 D 243837 D Common Stock 2020-09-16 4 S 0 16200 102.33 D 227637 D Common Stock 2020-09-16 4 S 0 12100 102.75 D 215537 D Common Stock 339358 I By Trust This sale was effected pursuant to a Rule 10b5-1 trading plan which was entered into by the reporting person for estate and financial planning purposes. This transaction was executed in multiple trades at prices ranging from $100.91 to $101.815. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. This transaction was executed in multiple trades at prices ranging from $101.97 to $102.505. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. This transaction was executed in multiple trades at prices ranging from $102.51 to $103.33. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. By the Yabuki Family Foundation of which Mr. Yabuki serves as trustee. /s/ Lynn S. McCreary (attorney-in-fact) 2020-09-17