Exhibit 24

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned constitutes and appoints Frank J. Bisignano, Robert W. Hau and Eric C. Nelson, and each of them individually (so long as each individual is an officer of Fiserv, Inc.), as the undersigned’s true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for the undersigned and in the undersigned’s name, place and stead, in any and all capacities, to sign the undersigned’s name as a director of Fiserv, Inc. to the Registration Statement on Form S-3 relating to the registration of various securities by Fiserv, Inc. and any amendments (including post-effective amendments) or supplements thereto and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission under the Securities Act of 1933, as amended, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or any substitute, may lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of February 21, 2024.

 

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned constitutes and appoints Frank J. Bisignano, Robert W. Hau and Eric C. Nelson, and each of them individually (so long as each individual is an officer of Fiserv, Inc.), as the undersigned’s true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for the undersigned and in the undersigned’s name, place and stead, in any and all capacities, to sign the undersigned’s name as a director of Fiserv, Inc. to the Registration Statement on Form S-3 relating to the registration of various securities by Fiserv, Inc. and any amendments (including post-effective amendments) or supplements thereto and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission under the Securities Act of 1933, as amended, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or any substitute, may lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of February 21, 2024.

 

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned constitutes and appoints Frank J. Bisignano, Robert W. Hau and Eric C. Nelson, and each of them individually (so long as each individual is an officer of Fiserv, Inc.), as the undersigned’s true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for the undersigned and in the undersigned’s name, place and stead, in any and all capacities, to sign the undersigned’s name as a director of Fiserv, Inc. to the Registration Statement on Form S-3 relating to the registration of various securities by Fiserv, Inc. and any amendments (including post-effective amendments) or supplements thereto and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission under the Securities Act of 1933, as amended, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or any substitute, may lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of February 21, 2024.

 

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned constitutes and appoints Frank J. Bisignano, Robert W. Hau and Eric C. Nelson, and each of them individually (so long as each individual is an officer of Fiserv, Inc.), as the undersigned’s true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for the undersigned and in the undersigned’s name, place and stead, in any and all capacities, to sign the undersigned’s name as a director of Fiserv, Inc. to the Registration Statement on Form S-3 relating to the registration of various securities by Fiserv, Inc. and any amendments (including post-effective amendments) or supplements thereto and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission under the Securities Act of 1933, as amended, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or any substitute, may lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of February 21, 2024.

 

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned constitutes and appoints Frank J. Bisignano, Robert W. Hau and Eric C. Nelson, and each of them individually (so long as each individual is an officer of Fiserv, Inc.), as the undersigned’s true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for the undersigned and in the undersigned’s name, place and stead, in any and all capacities, to sign the undersigned’s name as a director of Fiserv, Inc. to the Registration Statement on Form S-3 relating to the registration of various securities by Fiserv, Inc. and any amendments (including post-effective amendments) or supplements thereto and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission under the Securities Act of 1933, as amended, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or any substitute, may lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of February 21, 2024.

 

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned constitutes and appoints Frank J. Bisignano, Robert W. Hau and Eric C. Nelson, and each of them individually (so long as each individual is an officer of Fiserv, Inc.), as the undersigned’s true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for the undersigned and in the undersigned’s name, place and stead, in any and all capacities, to sign the undersigned’s name as a director of Fiserv, Inc. to the Registration Statement on Form S-3 relating to the registration of various securities by Fiserv, Inc. and any amendments (including post-effective amendments) or supplements thereto and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission under the Securities Act of 1933, as amended, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or any substitute, may lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of February 21, 2024.

 

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned constitutes and appoints Frank J. Bisignano, Robert W. Hau and Eric C. Nelson, and each of them individually (so long as each individual is an officer of Fiserv, Inc.), as the undersigned’s true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for the undersigned and in the undersigned’s name, place and stead, in any and all capacities, to sign the undersigned’s name as a director of Fiserv, Inc. to the Registration Statement on Form S-3 relating to the registration of various securities by Fiserv, Inc. and any amendments (including post-effective amendments) or supplements thereto and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission under the Securities Act of 1933, as amended, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or any substitute, may lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of February 21, 2024.

 

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned constitutes and appoints Frank J. Bisignano, Robert W. Hau and Eric C. Nelson, and each of them individually (so long as each individual is an officer of Fiserv, Inc.), as the undersigned’s true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for the undersigned and in the undersigned’s name, place and stead, in any and all capacities, to sign the undersigned’s name as a director of Fiserv, Inc. to the Registration Statement on Form S-3 relating to the registration of various securities by Fiserv, Inc. and any amendments (including post-effective amendments) or supplements thereto and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission under the Securities Act of 1933, as amended, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or any substitute, may lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of February 21, 2024.

 

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned constitutes and appoints Frank J. Bisignano, Robert W. Hau and Eric C. Nelson, and each of them individually (so long as each individual is an officer of Fiserv, Inc.), as the undersigned’s true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for the undersigned and in the undersigned’s name, place and stead, in any and all capacities, to sign the undersigned’s name as a director of Fiserv, Inc. to the Registration Statement on Form S-3 relating to the registration of various securities by Fiserv, Inc. and any amendments (including post-effective amendments) or supplements thereto and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission under the Securities Act of 1933, as amended, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or any substitute, may lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of February 21, 2024.