SECURITIES 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

August 2019

Commission File Number: 001-37925

GDS Holdings Limited

(Registrant’s name)

2/F, Tower 2, Youyou Century Place

428 South Yanggao Road

Pudong, Shanghai 200127

People’s Republic of China

(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 on 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 on paper as permitted by Regulation S-T Rule 101(b)(7): o

EXHIBITS

Exhibit 99.1 — Press release — GDS Announces Results of Annual General Meeting of Shareholders

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.

Exhibit 99.1

GDS Announces Results of Annual General Meeting of Shareholders

Shanghai, China, August 6, 2019 — GDS Holdings Limited (“GDS Holdings”, “GDS” or the “Company”) (NASDAQ: GDS), a leading developer and operator of high-performance data centers in China, today announced that it held its Annual General Meeting of Shareholders (“2019 AGM”) on August 6, 2019. Each of the ordinary resolutions submitted to the shareholders for approval at the 2019 AGM has been approved.

Specifically, the shareholders of the Company passed ordinary resolutions approving:

1.              Re-election of Mr. William Wei Huang as a director of the Company.

2.              Re-election of Ms. Bin Yu as a director of the Company.

3.              Re-election of Mr. Zulkifli Baharudin as a director of the Company.

4.              Confirmation of the appointment of KPMG Huazhen LLP as independent auditor of the Company for the fiscal year ending December 31, 2019.

5.              Amendment to Section 3(a) of the 2016 Equity Incentive Plan of the Company as follows:

“Subject to the provisions of Section 9 and paragraph (b) of this Section 3, the maximum aggregate number of Shares which may be subject to Awards under the Plan is 56,707,560 Shares, provided, however, that the maximum aggregate number of Shares which may be subject to Awards under the Plan shall be automatically increased on the first day of each fiscal year (i.e., January 1 of each calendar year) during which the Plan remains in effect to three percent (3%) of the then total issued and outstanding Shares of the Company, if and whenever the Shares which may be subject to the Awards under the Plan accounts for less than one and half percent (1.5%) of the then total issued and outstanding Shares of the Company.”

6.              Authorization of the Board of Directors of the Company to approve allotment or issuance, in the 12-month period from the date of the Meeting, of ordinary shares or other equity or equity-linked securities of the Company up to an aggregate twenty per cent. (20%) of its existing issued share capital of the Company at the date of the Meeting, whether in a single transaction or a series of transactions (OTHER THAN any allotment or issues of shares on the exercise of any options that have been granted by the Company).

7.              Authorization of each of the directors and officers of the Company to take any and every action that might be necessary to effect the foregoing resolutions as such director or officer, in his or her absolute discretion, thinks fit.

About GDS Holdings Limited

GDS Holdings Limited (Nasdaq: GDS) is a leading developer and operator of high-performance data centers in China. The Company’s facilities are strategically located in China’s primary economic hubs where demand for high-performance data center services is concentrated. The Company’s data centers have large net floor area, high power capacity, density and efficiency, and multiple redundancy across all critical systems. GDS is carrier and cloud neutral, which enables customers to connect directly to all major PRC telecommunications carriers and to the largest PRC and global cloud service providers hosted by GDS in many of its facilities. The Company has an 18-year track record of service delivery, successfully fulfilling the requirements of some of the largest and most demanding customers for outsourced data center services in China. The Company’s base of customers consists predominantly of hyper-scale cloud service providers, large internet companies, financial institutions, telecommunications and IT service providers, and large domestic private sector and multinational corporations.

For investor and media inquiries, please contact:

GDS Holdings Limited

Laura Chen

Phone: +86 (21) 2033-0295

Email: ir@gds-services.com

The Piacente Group, Inc.

Ross Warner

Phone: +86 (10) 6508-0677

Email: GDS@tpg-ir.com

Brandi Piacente

Phone: +1 (212) 481-2050

Email: GDS@tpg-ir.com

GDS Holdings Limited