Filed by Fidelity National Information Services, Inc.

Commission File No. 001-16427

pursuant to Rule 425 of the Securities Act of 1933

and deemed filed under Rule 14a-12 of the

Securities Exchange Act of 1934, as amended

Subject Company: Worldpay, Inc.

Commission File No. 001-35462

Client-facing Teams Communication

March 18, 2019

Distribution: FIS client-facing employees

Dear Colleagues:

Earlier this morning, you received a communication from me announcing that FIS has signed a definitive agreement to acquire Worldpay, the No. 1 global acquirer of transactions and one of the world’s leading payment technology companies. This is a tremendous step forward in our drive to become a Top 100 company, bringing together two great companies with similar business models, complementary solutions and highly talented employees who are dedicated to serving the financial services and payments industry.

The FIS and Worldpay solution portfolios are very complementary. This combination greatly expands our merchant capabilities and further enhances our acquiring and unified payment offerings. Upon closing, we will be uniquely positioned to accelerate the future of finance and commerce globally through the industry’s broadest range of enterprise banking and payments capabilities that empower financial institutions, retailers, capital markets and businesses worldwide.

This is a significant announcement for us, and we expect it to create interest and excitement in the industry and with our clients. You will serve as the front line to many of our client inquiries, and we want to make sure you are well prepared to proactively discuss today’s announcement as well as address questions today and in the weeks to come.

Attached is the communications package we have prepared to help you facilitate these conversations. This package includes:

In addition to these materials, I encourage you to attend a conference call at 10:00 a.m. ET today whereby I will share with you the strategic rationale behind this combination and your role in communicating it to your clients. A calendar invite with the teleconference details will be sent to you this morning. If you do not receive this invitation, you can contact fis.corporate.communications@fisglobal.com to request the dial-in details.

It is my expectation that you will contact each of your clients to share this exciting news and position it correctly. When you have conversations about this announcement, you must stick to the messaging provided in this messaging package.

It is also important to remember that while we have signed an agreement with Worldpay, the transaction is subject to regulatory and shareholder approvals, and contractual closing conditions. We expect to close later this year. Until then, we will continue to operate as separate companies and it is business as usual for both organizations. As a result, FIS and Worldpay cannot act jointly with respect to any common clients or deals in flight. Please strictly adhere to these instructions, as contrary behavior, sometimes known as “gun jumping,” may have the unintended consequence of causing regulators to delay the closing of this transaction.

You should not reach out to anyone at Worldpay unless you are specifically requested to do so.

Most importantly, we must remain focused on serving the needs of our clients. We cannot allow our sales momentum to slow nor can we allow ourselves to be distracted by this exciting combination. If there are specific deals or clients that you have questions about, please work with your manager to address them. We have successfully completed large combinations without distraction before, and I am fully confident that we will do so again.

This is a great time to be part of FIS, and your hard work in championing the needs of our clients has made this possible.

Regards,

Important Information

Forward-looking Statements

The statements contained in this document that are not purely historical are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, or “Securities Act” and Section 21E of the Securities Exchange Act of 1934, as amended, or “Exchange Act,” including statements regarding our expectations, hopes, intentions, or strategies regarding the future. These statements relate to, among other things, business and market conditions, outlook and our future financial and operating results and debt. In many cases, you can identify forward-looking statements by terminology such as “may,” “will,” “should,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “potential,” or “continue,” or the negative of these terms, and other comparable terminology. Actual results could differ materially from those anticipated in these statements as a result of a number of factors, including, but not limited to:

Other unknown or unpredictable factors also could have a material adverse effect on our business, financial condition, results of operations and prospects. Accordingly, readers should not place undue reliance on these forward-looking statements. These forward-looking statements are inherently subject to uncertainties, risks and changes in circumstances that are difficult to predict. Except as required by applicable law or regulation, we do not undertake (and expressly disclaim) any obligation and do not intend to publicly update or review any of these forward-looking statements, whether as a result of new information, future events or otherwise.

Additional Information and Where to Find It

This communication is being made in respect of the proposed merger transaction between Fidelity National Information Services, Inc. (“FIS”) and Worldpay Inc (“Worldpay”). In connection with the proposed merger, FIS will file with the SEC a registration statement on Form S-4 that will include the joint proxy statement of FIS and Worldpay and a prospectus of FIS, as well as other relevant documents regarding the proposed transaction. A definitive joint proxy statement/prospectus will also be sent to FIS shareholders and Worldpay stockholders. INVESTORS ARE URGED TO READ THE REGISTRATION STATEMENT AND THE JOINT PROXY STATEMENT/PROSPECTUS REGARDING THE MERGER WHEN IT BECOMES AVAILABLE AND ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION.

A free copy of the joint proxy statement/prospectus, as well as other filings containing information about FIS and Worldpay, may be obtained at the SEC’s website (http://www.sec.gov). You will also be able to obtain these documents, free of charge, from FIS at www.fisglobal.com or by emailing info.investorrelations@fisglobal.com or from Worldpay by accessing Worldpay’s website at http://investor.worldpay.com or by emailing IR@worldpay.com.

Participants in the Solicitation

FIS and Worldpay and certain of their respective directors and executive officers may be deemed to be participants in the solicitation of proxies from FIS shareholders and Worldpay stockholders in respect of the transaction described in the joint proxy statement/prospectus. Information regarding FIS’s directors and executive officers is contained in FIS’s Proxy Statement on Schedule 14A, dated April 20, 2018, which is filed with the SEC. Information regarding Worldpay’s directors and executive officers is contained in Worldpay’s Proxy Statement on Schedule 14A, dated April 4, 2018, which is filed with the SEC. Additional information regarding the interests of those participants and other persons who may be deemed participants in the transaction may be obtained by reading the joint proxy statement/prospectus regarding the proposed merger when it becomes available. Free copies of this document may be obtained as described in the preceding paragraph.

This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended.

Client and Prospect Talking Points

Client and Prospect FAQs

FIS announced on March 18 that it has signed a definitive agreement to acquire Worldpay (NYSE: WP). Under the terms of the agreement, FIS will acquire 100 percent of the equity of Worldpay. The combined company will have approximately $12.3 billion pro forma 2018 annual revenue.

As the No. 1 global acquirer of transactions, Worldpay is one of the world’s leading merchant acquiring and e-commerce payment technology companies, with annual revenue of $3.9 billion. The company’s more than 8,000 employees provide solutions for financial institutions, retailers and businesses offering a comprehensive suite of payment products and services, delivered globally. It processes over 40 billion transactions annually for more than one million merchant locations globally, supporting over 300 payment types across more than 140 countries in over 120 currencies.

This is a tremendous milestone bringing together two great companies with similar business models, complementary solutions and highly talented employees who are dedicated to serving the financial services industry and accelerating the future of finance and commerce.

Combined, our focus will remain on servicing global, regional, community and credit union financial institutions as well as capital markets, retailers and businesses. Upon closing, the addition of Worldpay will bring new solutions, services and talent that enhance our current client offerings including significant scale in merchant acquiring services. Our clients will benefit from our greatly expanded ability to provide merchant acquiring capabilities, as well as other payment offerings. Worldpay’s strong business leaders and talented employees will bring valuable insights and experience to our global team. In addition, this combination enables us to address the following objectives:

We do not comment on competitor transactions. Our combination is driven by our long-term strategy to increase our global scale, expand our portfolio and enter complementary new markets. We have followed Worldpay’s success for several years and felt this was the right time to make this move.

We expect the transaction to close later this year.

FIS and Worldpay lead our respective markets in modernization investments. Upon closing, our clients will have access to a wider portfolio of modern, digital assets that can help them accelerate growth, streamline operations and better engage with their customers.

The FIS and Worldpay payment solution portfolios are very complementary. As a result, and upon closing, FIS will be uniquely positioned to accelerate the future of finance and commerce globally through the industry’s broadest range of enterprise banking and payments capabilities that empower financial institutions, retailers, capital markets and businesses worldwide. The addition of Worldpay will bring new solutions, services and talent that enhance our current client offerings including significant scale in merchant acquiring services.

The combined company will operate under the FIS name and will be headquartered in Jacksonville, Fla. FIS chairman, president and CEO, Gary Norcross, will be chairman, president and CEO of the combined company.

Worldpay’s executive chairman and CEO, Charles Drucker, will become executive vice chairman of the FIS board of directors. He will also assist with our focused efforts to improve our organic growth.

We will be streamlining and simplifying our organizational structure around financial institutions, capital markets and retail payments. Our Retail Payments business will operate under the Worldpay name.

Until the transaction closes, both FIS and Worldpay will maintain business-as-usual, separate operations and nothing will change in our respective relationships with you. Subject to all closing conditions and regulatory and shareholder approvals, we anticipate the combination to close later this year and will communicate information about our go-forward strategy at that time.

Upon closing, FIS will be uniquely positioned to accelerate the future of finance and commerce globally through the industry’s broadest range of enterprise banking and payments capabilities that empower financial institutions, retailers, capital markets and businesses worldwide. The addition of Worldpay will bring new solutions, services and talent that enhance our current client offerings including significant scale in merchant acquiring services.

There are no changes to your contracts. All current contacts are valid and the full obligation of the newly combined company when the transaction closes.

Any contract signed by Worldpay during the period between signing and close will be valid with FIS and becomes the obligation of the newly combined company when the transaction closes.

You should continue to communicate with FIS using your current processes and contacts.

Client Letter

March 18, 2019

Dear Valued Client:

I hope you have heard the exciting news that FIS™ has signed a definitive agreement to acquire Worldpay. This is a tremendous milestone bringing together two great companies with similar business models, complementary solutions and highly talented employees who are dedicated to serving the financial services industry and accelerating the future of finance and commerce.

Upon close, our focus will remain on servicing global, regional, community and credit union financial institutions, as well as capital markets, retailers and businesses worldwide. The addition of Worldpay will bring new solutions and services that enhance the offerings we provide to you including significant scale in merchant acquiring services. Specifically, you will benefit from our combined unified payment and multicurrency capabilities, our robust risk and fraud solutions and advanced data analytics.

The combined organization will be headquartered in Jacksonville, Fla., and I will serve as chairman, president and chief executive officer. We will continue to operate under the FIS name.

We understand that it is your continued support and loyalty that determines our ultimate success. The FIS and Worldpay solutions are very complementary. Upon close, we believe the combination will enable us to deepen our relationship with you in a more meaningful way.

The transaction is subject to all regulatory and shareholder approvals and contractual closing conditions, and we expect the transaction to close later this year. Until closing, we will continue to conduct business as usual as separate companies and will focus on serving the needs of all our clients. We are limited in the information we can share with you until the transaction closes and look forward to discussing additional details with you at the appropriate time.

As always, we thank you for your continued business and confidence in our organization.

Regards,

Gary Norcross

FIS Chairman, President and CEO

FIS Client and Prospect Phone Script

Hello, this is [Name] calling from FIS.

You may have seen the announcement [today/yesterday] that FIS has entered into an agreement to combine with Worldpay, and I personally want to share some information with you about this exciting development.

This is an important milestone and we are pleased about the benefits this combination offers our clients:

Bringing these market-leading companies together positions FIS for future growth and long-term success. With that being said, we understand that it is your continued support and loyalty that determines our ultimate success.

Our entire team remains focused on meeting our commitment to our clients for the quality delivery of innovative solutions that keep you competitive and growing in the markets you serve, and we will keep that commitment at the forefront of all the decisions we make.

The agreement contains the customary closing conditions, including regulatory and shareholder approvals. We expect the transaction to close later this year. There are no assurances regarding the exact closing date, so we will keep you apprised of updates as we have them available.

Please feel free to share this information with others in your organization as appropriate.

If leaving voice mail message, include: “If you have any questions or concerns, please call me directly at XXX.XXX.XXXX.”

If in person, PAUSE FOR FEEDBACK – if none, probe – are there any questions I can answer or any immediate concerns?

FIS Inbound Call Center Script

What’s going on at FIS? I’ve heard rumors about an acquisition.

It’s true. FIS announced that it has signed a definitive agreement to acquire Worldpay. The combined organization will be headquartered in Jacksonville, Fla., and Gary Norcross will serve as chairman, president and chief executive officer.

Who will handle my account going forward?

Until the transaction closes, both FIS and Worldpay will maintain business-as-usual, separate operations and nothing will change in our respective relationships with you. You should continue to communicate with Worldpay using your current processes and contacts.

Will my products go away?

The FIS and Worldpay solution portfolios are very complementary. Upon closing, we will be uniquely positioned to offer our clients a broad range of solutions for enterprise banking, capital markets, retailers and businesses worldwide.

Who can I talk to if I have additional questions?

You should reach out to your strategic account manager or global client partner if you have questions about this exciting announcement.