FMS Fresenius Medical Care AG

ISECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

Pursuant to Rule 13a-16 or 15d-16 of the

Securities Exchange Act of 1934

For the month of November 2014

FRESENIUS MEDICAL CARE AG & Co. KGaA

(Translation of registrant’s name into English)

Else-Kröner Strasse 1

61346 Bad Homburg

Germany

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F x  Form 40-F o

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): o

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): o

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes o  No x

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82

On November 27, 2014 Fresenius Medical Care AG & Co. KGaA (the “Company”) issued an Investor News announcing that it successfully upsized and extended the maturity of its credit agreement and also extends the maturity of its accounts receivable facility.

EXHIBITS

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

DATE: November 28, 2014

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Exhibit 99.1

November 27, 2014

Fresenius Medical Care successfully upsizes and extends the maturity of its credit agreement and also extends the maturity of its accounts receivable facility

Bad Homburg, Germany — Fresenius Medical Care AG & Co. KGaA (the “company” or “Fresenius Medical Care”; Frankfurt Stock Exchange: FME / New York Stock Exchange: FMS), the world’s largest provider of dialysis products and services, has upsized its syndicated credit facility by 850 million U.S. dollar equivalent to a total amount of approximately 4.4 billion U.S. dollar equivalent, with pricing and other conditions more favorable to the company. The amended credit facility consists of revolving facilities and term loans, both U.S. dollar and euro denominated. The final maturity date was extended by two years to October 30, 2019. The facilities will be used to refinance existing debt, for working capital needs and general corporate purposes.

Fresenius Medical Care also successfully extended its $800 million accounts receivable facility with improved terms. The new facility will now mature November 24, 2017.

About Fresenius Medical Care

Fresenius Medical Care is the world’s largest integrated provider of products and services for individuals undergoing dialysis because of chronic kidney failure, a condition that affects more than 2.5 million individuals worldwide. Through its network of 3,349 dialysis clinics in North America, Europe, Latin America, Asia-Pacific and Africa, Fresenius Medical Care provides dialysis treatments for 283,135 patients around the globe. Fresenius Medical Care is also the world’s leading provider of dialysis products such as hemodialysis machines, dialyzers and related disposable products.

For more information about Fresenius Medical Care, visit the company’s website at www.fmc-ag.com.

Disclaimer

This release contains forward-looking statements that are subject to various risks and uncertainties. Actual results could differ materially from those described in these forward-looking statements due to certain factors, including changes in business, economic and competitive conditions, regulatory reforms, foreign exchange rate fluctuations, uncertainties in litigation or investigative proceedings, and the availability of financing. These and other risks and uncertainties are detailed in Fresenius Medical Care AG & Co. KGaA’s reports filed with the U.S. Securities and Exchange Commission. Fresenius Medical Care AG & Co. KGaA does not undertake any responsibility to update the forward-looking statements in this release.

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