AP NEWS

21Vianet Group, Inc. Reports Unaudited Third Quarter 2018 Financial Results

November 20, 2018

3Q18 adjusted EBITDA margin expanded to 28.2%Raising full year 2018 adjusted EBITDA guidance

BEIJING, Nov. 21, 2018 (GLOBE NEWSWIRE) -- 21Vianet Group, Inc. (Nasdaq: VNET) (“21Vianet” or the “Company”), a leading carrier- and cloud-neutral Internet data center services provider in China, today announced its unaudited financial results for the third quarter ended September 30, 2018. The Company will hold a conference call at 8:00 pm on Tuesday, November 20, 2018, U.S. Eastern Time to discuss the financial results. Dial-in details are provided at the end of this release.

Third Quarter 2018 Financial Highlights (including hosting and related services & MNS1 business)

-- Revenues from hosting and related services increased by 14.6% year over year and 5.0% quarter over quarter to RMB870.1 million (US$126.7 million). -- Adjusted cash gross margin expanded to 45.0% from 38.3% in the same period of 2017 and 43.9% in the second quarter of 2018. -- Operating profit improved to RMB64.6 million (US$9.4 million) from an operating loss of RMB1,223.6 million in the same period of 2017 and RMB51.5 million in the second quarter of 2018. -- Adjusted EBITDA increased by 81.6% year over year and 10.9% quarter over quarter to RMB45.2 million (US$35.7 million). Adjusted EBITDA margin expanded to 28.2% from 15.2% in the same period of 2017 and 26.7% in the second quarter of 2018. -- Net cash generated from operating activities was RMB260.7 million (US$38.0 million) in the third quarter of 2018 compared to RMB206.6 million in the same period of 2017 and RMB111.4 million in the second quarter of 2018.

The financial results of the same period of 2017 included those from both the hosting and related services business and the MNS business. The year-over-year improvement was partially attributable to the disposal of the MNS business in September 2017.

Third Quarter 2018 Operational Highlights

-- Hosting MRR2 per cabinet increased to RMB8,384 in the third quarter of 2018 compared to RMB7,817 in the third quarter of 2017 and RMB8,271 in the second quarter of 2018. -- Total cabinets under management increased to 30,303 as of September 30, 2018 from 29,149 as of June 30, 2018. As of September 30, 2018, the Company had 25,361 cabinets in its self-built data centers and 4,942 cabinets in its partnered data centers. -- Utilization rate in the third quarter of 2018 remained stable at 71.1% compared to the second quarter of 2018, due to the additional 1,194 cabinets that were delivered in September 2018.

Mr. Alvin Wang, Chief Executive Officer and President of the Company, stated, “We maintained our strong momentum in revenue growth and profitability expansion during the third quarter of 2018. Our revenues grew by 14.6% year over year as we won new orders from existing customers, attracted additional notable customers, and experienced growth of Microsoft cloud service in China. Meanwhile, our adjusted EBITDA margin expanded to 28.2%, as we continuously grew our scale and improved our operational efficiency. While remain cautiously optimistic about our growth prospect and profitability against a backdrop of macroeconomic uncertainties, we will continue to execute our long-term strategy by accelerating our capacity growth in Tier 1 cities, nearby satellite cities and quasi-tier 1 cities. As we maintain our focus on sharpening our competitive edges in network quality and technology capability, we will be well-positioned to capitalize on the increasing market demand in China going forward.”

Ms. Sharon Liu, Chief Financial Officer of the Company, commented, “We once again delivered a solid quarter with strong top- and bottom-line growths. In the third quarter of 2018, our net revenues reported RMB870.1 million, beating the high-end of our guidance. More importantly, our adjusted EBITDA margin further increased to 28.2%, showcasing constant improvement in the past three quarters. We are raising our full year 2018 adjusted EBITDA guidance to reflect our achievement.”

Third Quarter 2018 Financial Results

To fully reflect the Company’s performance, all analysis between “REVENUES” and “ADJUSTED EBITDA” presents only the results of the hosting and related service business. The MNS business, which was disposed of in the third quarter of 2017, is excluded.

REVENUES: Net revenues increased by 14.6% to RMB870.1 million (US$126.7 million) in the third quarter of 2018 from RMB759.3 million in the same period of 2017 and increased by 5.0% from RMB828.3 million in the second quarter of 2018. The increase was primarily due to the growing demand for data centers and cloud services in the domestic market.

GROSS PROFIT: Gross profit increased by 11.1% to RMB241.2 million (US$35.1 million) in the third quarter of 2018 from RMB217.1 million in the same period of 2017 and increased by 5.1% from RMB229.4 million in the second quarter of 2018. Gross margin decreased slightly to 27.7% in the third quarter of 2018 from 28.6% in the same period of 2017 but remained stable compared to the second quarter of 2018. The year-over-year decrease in gross margin was mainly due to an increase in depreciation.

ADJUSTED CASH GROSS PROFIT, which excludes depreciation, amortization, and share-based compensation expenses, increased by 24.2% to RMB391.9 million (US$57.1 million) in the third quarter of 2018 from RMB315.6 million in the same period of 2017 and increased by 7.7% from RMB364.0 million in the second quarter of 2018. Adjusted cash gross margin expanded to 45.0% in the third quarter of 2018 from 41.6% in the same period of 2017 and 43.9% in the second quarter of 2018. OPERATING EXPENSES: Total operating expenses increased by 1.1% to RMB176.6 million (US$25.7 million) in the third quarter of 2018 from RMB174.6 million in the same period of 2017 but decreased by 0.8% from RMB177.9 million in the second quarter of 2018. As a percentage of net revenues, total operating expenses decreased to 20.3% in the third quarter of 2018 from 23.0% in the same period of 2017 and 21.5% in the second quarter of 2018.

Adjusted operating expenses, which exclude share-based compensation expenses and changes in the fair value of contingent purchase consideration payable, increased by 3.0% to RMB162.9 million (US$23.7 million) in the third quarter of 2018 from RMB158.1 million in the same period of 2017 and increased by 0.6% from RMB161.9 million in the second quarter of 2018. As a percentage of net revenues, adjusted operating expenses decreased to 18.7% in the third quarter of 2018 from 20.8% in the same period of 2017 and 19.5% in the second quarter of 2018. The decrease of adjusted operating expenses as a percentage of total revenues was primarily due to the successful implementation of the Company’s efficiency enhancement initiatives.

Sales and marketing expenses were RMB39.9 million (US$5.8 million) in the third quarter of 2018 compared to RMB50.1 million in the same period of 2017 and from RMB41.8 million in the second quarter of 2018.

Research and development expenses were RMB24.3 million (US$3.5 million) in the third quarter of 2018 compared to RMB22.2 million in the same period of 2017 and RMB22.2 million in the second quarter of 2018.

General and administrative expenses were RMB110.2 million (US$16.1 million) in the third quarter of 2018 compared to RMB98.8 million in the same period of 2017 and RMB109.1 million in the second quarter of 2018.

ADJUSTED EBITDA: Adjusted EBITDA in the third quarter of 2018 increased by 39.5% to RMB245.2 million (US$35.7 million) from RMB175.8 million in the same period of 2017 and increased by 10.9% from RMB221.1 million in the second quarter of 2018. Adjusted EBITDA in the third quarter of 2018 excludes share-based compensation expenses of RMB12.9 million (US$1.9 million) and changes in the fair value of contingent purchase consideration payable, which was a loss of RMB1.4 million (US$0.2 million). Adjusted EBITDA margin expanded to 28.2% in the third quarter of 2018 from 23.1% in the same period of 2017 and 26.7% in the second quarter of 2018.

NET LOSS: Net loss in the third quarter of 2018 was RMB27.9 million (US$4.1 million) compared to a net loss of RMB1,479.1 million in the same period of 2017 and a net loss of RMB95.5 million in the second quarter of 2018. Net loss in the third quarter of 2018 included a foreign exchange loss of RMB55.0 million (US$8.0 million) compared to RMB5.6 million in the same period of 2017 and RMB73.4 million in the second quarter of 2018.

LOSS PER SHARE: Basic and diluted loss per share was RMB0.04 (US$0.01) in the third quarter of 2018, which represents the equivalent of RMB0.24 (US$0.06) per American Depositary Share (“ADS”). Each ADS represents six ordinary shares. Diluted profit per share is calculated using net profit divided by the weighted average number of shares.

As of September 30, 2018, the Company’s cash and cash equivalents, restricted cash and short-term investments were RMB2.96 billion (US$431.4 million).

Net cash generated from operating activities was RMB260.7 million (US$38.0 million) in the third quarter of 2018 compared to RMB206.6 million in the same period of 2017 and RMB111.4 million in the second quarter of 2018.

Financial Outlook

For the fourth quarter of 2018, the Company expects net revenues to be in the range of RMB870 million to RMB890 million. Adjusted EBITDA is expected to be in the range of RMB245 million to RMB265 million.

Consequently, for the full year of 2018, the Company now expects net revenues to be in the range of RMB3,370 million to RMB3,390 million. Adjusted EBITDA is expected to be in the range of RMB905 million to RMB925 million. The midpoints of the Company’s updated estimates imply an increase of 13.6% year-over-year in total revenues and 36.4% year-over-year in adjusted EBITDA.

The forecast reflects the Company’s current and preliminary view on the market and its operational conditions, which is subject to change.

Conference Call

The Company will hold a conference call at 8:00 pm on Tuesday, November 20, 2018 U.S. Eastern Time, or 9:00 am on Wednesday, November 21, 2018 Beijing Time, to discuss the financial results.

Participants may access the call by dialing the following numbers:

United States Toll Free: +1-855-500-8701 International: +65-6713-5440 China Domestic: 400-120-0654 Hong Kong: +852-3018-6776 Conference ID: 8076287

The replay will be accessible through November 28, 2018 by dialing the following numbers:

United States Toll Free: +1-855-452-5696 International: +61-2-9003-4211 Conference ID: 8076287

A live and archived webcast of the conference call will be available through the Company’s investor relation website at http://ir.21vianet.com.

Non-GAAP Disclosure

In evaluating its business, 21Vianet considers and uses the following non-GAAP measures defined as non-GAAP financial measures by the SEC as supplemental measure to review and assess its operating performance: adjusted cash gross profit, adjusted cash gross margin, adjusted operating expenses, adjusted EBITDA, adjusted EBITDA margin, The presentation of these non-GAAP financial measures is not intended to be considered in isolation or as a substitute for the financial information prepared and presented in accordance with U.S. GAAP. For more information on these non-GAAP financial measures, please see the table captioned “Reconciliations of GAAP and non-GAAP results” set forth at the end of this press release.

The non-GAAP financial measures are provided as additional information to help investors compare business trends among different reporting periods on a consistent basis and to enhance investors’ overall understanding of the Company’s current financial performance and prospects for the future. These non-GAAP financial measures should be considered in addition to results prepared in accordance with U.S. GAAP, but should not be considered a substitute for, or superior to, U.S. GAAP results. In addition, the Company’s calculation of the non-GAAP financial measures may be different from the calculation used by other companies, and therefore comparability may be limited.

Exchange Rate

This announcement contains translations of certain RMB amounts into U.S. dollars (“USD”) at specified rates solely for the convenience of the reader. Unless otherwise stated, all translations from RMB to USD were made at the rate of RMB6.868 to US$1.00, the noon buying rate in effect on September 30, 2018 in the H.10 statistical release of the Federal Reserve Board. The Company makes no representation that the RMB or USD amounts referred could be converted into USD or RMB, as the case may be, at any particular rate or at all. For analytical presentation, all percentages are calculated using the numbers presented in the financial statements contained in this earnings release.

Statement Regarding Unaudited Condensed Financial Information

The unaudited financial information set forth above is preliminary and subject to potential adjustments. Adjustments to the consolidated financial statements may be identified when audit work has been performed for the Company’s year-end audit, which could result in significant differences from this preliminary unaudited condensed financial information.

About 21Vianet

21Vianet Group, Inc. is a leading carrier- and cloud-neutral Internet data center services provider in China. 21Vianet provides hosting and related services, including IDC services, cloud services, and business VPN services to improve the reliability, security and speed of its customers’ Internet infrastructure. Customers may locate their servers and equipment in 21Vianet’s data centers and connect to China’s Internet backbone through 21Vianet’s extensive fiber optic network. 21Vianet operates in more than 30 cities throughout China, servicing a diversified and loyal base of nearly 5,000 hosting and related enterprise customers that span numerous industries ranging from Internet companies to government entities and blue-chip enterprises to small- to mid-sized enterprises.

Safe Harbor Statement

This announcement contains forward-looking statements. These forward-looking statements are made under the “safe harbor” provisions of the U.S. Private Securities Litigation Reform Act of 1995. These statements can be identified by terminology such as “will,” “expects,” “anticipates,” “future,” “intends,” “plans,” “believes,” “estimates” and similar statements. Among other things, quotations from management in this announcement as well as 21Vianet’s strategic and operational plans contain forward-looking statements. 21Vianet may also make written or oral forward-looking statements in its reports filed with, or furnished to, the U.S. Securities and Exchange Commission, in its annual reports to shareholders, in press releases and other written materials and in oral statements made by its officers, directors or employees to third parties. Statements that are not historical facts, including statements about 21Vianet’s beliefs and expectations, are forward-looking statements. Forward-looking statements involve inherent risks and uncertainties. A number of factors could cause actual results to differ materially from those contained in any forward-looking statement, including but not limited to the following: 21Vianet’s goals and strategies; 21Vianet’s expansion plans; the expected growth of the data center services market; expectations regarding demand for, and market acceptance of, 21Vianet’s services; 21Vianet’s expectations regarding keeping and strengthening its relationships with customers; 21Vianet’s plans to invest in research and development to enhance its solution and service offerings; and general economic and business conditions in the regions where 21Vianet provides solutions and services. Further information regarding these and other risks is included in 21Vianet’s reports filed with, or furnished to, the Securities and Exchange Commission. All information provided in this press release and in the attachments is as of the date of this press release, and 21Vianet undertakes no duty to update such information, except as required under applicable law.

Investor Relations Contacts:

21Vianet Group, Inc.Rene Jiang+86 10 8456 2121 IR@21Vianet.com

Julia Jiang+86 10 8456 2121 IR@21Vianet.com

ICR, Inc.Jack Wang+1 (646) 405-4922 IR@21Vianet.com

____________________________________

1MNS: Refers to managed network services.

2Hosting MRR: Refers to Monthly Recurring Revenues for the hosting business.

21VIANET GROUP, INC. CONSOLIDATED BALANCE SHEETS (Amount in thousands of Renminbi (“RMB”) and US dollars (“US$”)) As of As of December 31, September 30, 2018 2017 RMB RMB US$ (Audited) (Unaudited) (Unaudited) Assets Current assets: Cash and cash equivalents 1,949,631 2,334,260 339,875 Restricted cash 242,494 398,138 57,970 Accounts and notes receivable, net 455,811 570,112 83,010 Short-term investments 548,890 227,037 33,057 Prepaid expenses and other current assets 934,460 1,215,211 176,939 Amount due from related parties 114,256 134,292 19,553 Total current assets 4,245,542 4,879,050 710,404 ---------- ---------- --------- Non-current assets: Property and equipment, net 3,319,424 3,975,522 578,847 Intangible assets, net 401,115 362,904 52,840 Land use rights, net 163,671 148,390 21,606 Goodwill 989,530 989,530 144,078 Long-term investments 510,926 695,277 101,234 Amount due from related parties 20,210 20,735 3,019 Restricted cash 3,344 3,537 515 Deferred tax assets 172,818 143,866 20,947 Other non-current assets 81,581 136,288 19,844 Total non-current assets 5,662,619 6,476,049 942,930 ---------- ---------- --------- Total assets 9,908,161 11,355,099 1,653,334 ---------- ---------- --------- Liabilities and Shareholders’ Equity Current liabilities: Short-term bank borrowings 50,000 69,999 10,192 Accounts and notes payable 252,892 421,242 61,334 Accrued expenses and other payables 657,133 542,539 78,995 Deferred revenue 55,753 52,619 7,661 Advances from customers 403,244 590,069 85,916 Income taxes payable 13,309 32,903 4,791 Amounts due to related parties 55,675 230,174 33,514 Current portion of long-term bank borrowings 70,289 104,974 15,285 Current portion of capital lease obligations 201,315 206,559 30,076 Current portion of deferred government grant 4,574 4,574 666 Current portion of bonds payable 11,139 12,239 1,782 Total current liabilities 1,775,323 2,267,891 330,212 ---------- ---------- --------- Non-current liabilities: Long-term bank borrowings 187,638 125,000 18,200 Amounts due to related parties - 433,984 63,189 Unrecognized tax benefits 16,511 22,492 3,275 Deferred tax liabilities 190,873 182,680 26,599 Non-current portion of capital lease obligations 600,882 843,374 122,798 Non-current portion of deferred government grant 17,861 12,985 1,891 Bonds payable 1,918,069 2,027,695 295,238 Total non-current liabilities 2,931,834 3,648,210 531,190 ---------- ---------- --------- Shareholders’ equity Treasury stock (337,683 ) (337,683 ) (49,168 ) Ordinary shares 46 46 7 Additional paid-in capital 8,980,407 9,019,296 1,313,235 Accumulated other comprehensive (loss) gain (2,673 ) 92,781 13,509 Statutory reserves 38,736 40,014 5,826 Accumulated deficit (3,629,300 ) (3,721,580 ) (541,874 ) Total 21Vianet Group, Inc. shareholders’ equity 5,049,533 5,092,874 741,535 ---------- ---------- --------- Noncontrolling interest 151,471 346,124 50,397 Total shareholders’ equity 5,201,004 5,438,998 791,932 Total liabilities and shareholders’ equity 9,908,161 11,355,099 1,653,334 ---------- ---------- ---------

21VIANET GROUP, INC. CONSOLIDATED STATEMENTS OF OPERATIONS (Amount in thousands of Renminbi (“RMB”) and US dollars (“US$”) except for number of shares and per share data) Three months ended Nine months ended September 30, June 30, 2018 September30, 2018 September 30, September 30, 2018 2017 2017 RMB RMB RMB US$ RMB RMB US$ (Unaudited) (Unaudited) (Unaudited) (Unaudited) (Unaudited) (Unaudited) (Unaudited) Net revenues Hosting and related 759,255 828,317 870,068 126,684 2,209,364 2,499,150 363,883 services Managed network 126,780 - - - 417,527 - - services ----------- ----------- ----------- ----------- ----------- ----------- ----------- Total net 886,035 828,317 870,068 126,684 2,626,891 2,499,150 363,883 revenues Cost of (696,234 ) (598,884 ) (628,873 ) (91,566 ) (2,068,650 ) (1,800,620 ) (262,175 ) revenues ----------- ----------- ----------- ----------- ----------- ----------- ----------- Gross profit 189,801 229,433 241,195 35,118 558,241 698,530 101,708 Operating expenses Sales and (77,268 ) (41,816 ) (39,918 ) (5,812 ) (213,980 ) (122,966 ) (17,904 ) marketing Research and (38,308 ) (22,163 ) (24,333 ) (3,543 ) (119,803 ) (68,526 ) (9,978 ) development General and (129,683 ) (109,091 ) (110,243 ) (16,052 ) (404,599 ) (331,674 ) (48,293 ) administrative (Allowance) reversal for (4,366 ) 627 (643 ) (94 ) (36,280 ) 1,839 268 doubtful debt Changes in the fair value of contingent (1,002 ) (5,494 ) (1,413 ) (206 ) 2,897 (4,623 ) (673 ) purchase consideration payable ----------- ----------- ----------- ----------- ----------- ----------- ----------- Impairment of long-lived (401,808 ) - - - (401,808 ) - - assets Goodwill (766,440 ) - - - (766,440 ) - - impairment Total operating (1,418,875 ) (177,937 ) (176,550 ) (25,707 ) (1,940,013 ) (525,950 ) (76,580 ) expenses ----------- ----------- ----------- ----------- ----------- ----------- ----------- Other operating 5,439 - 5,439 - - income Operating (1,223,635 ) 51,496 64,645 9,411 (1,376,333 ) 172,580 25,128 (loss) profit Interest 6,664 8,961 13,484 1,963 22,104 30,972 4,510 income Interest (57,417 ) (51,328 ) (60,766 ) (8,848 ) (134,477 ) (163,636 ) (23,826 ) expense Impairment of long-term (20,397 ) - - - (20,397 ) - - investment Disposal (loss) gain of (180,048 ) 4,843 - - (180,048 ) 4,843 705 subsidiaries Other income 7,220 20,386 8,436 1,228 13,504 50,983 7,423 Other expense (12,630 ) (565 ) (137 ) (20 ) (16,828 ) (2,228 ) (324 ) Foreign (5,628 ) (73,360 ) (55,024 ) (8,012 ) (21,481 ) (83,543 ) (12,164 ) exchange loss ----------- ----------- ----------- ----------- ----------- ----------- ----------- (Loss) gain before income taxes and gain (1,485,871 ) (39,567 ) (29,362 ) (4,278 ) (1,713,956 ) 9,971 1,452 (loss) from equity method investments Income tax (expenses) (19,794 ) (44,305 ) 7,624 1,110 (37,308 ) (70,761 ) (10,303 ) benefits Gain (loss) from equity 26,546 (11,659 ) (6,156 ) (896 ) 36,051 (27,904 ) (4,063 ) method investments ----------- ----------- ----------- ----------- ----------- ----------- ----------- Net loss (1,479,119 ) (95,531 ) (27,894 ) (4,064 ) (1,715,213 ) (88,694 ) (12,914 ) Net loss (profit) attributable 104,354 1,321 (1,739 ) (253 ) 143,841 (2,309 ) (336 ) to noncontrolling interest ----------- ----------- ----------- ----------- ----------- ----------- ----------- Net loss attributable (1,374,765 ) (94,210 ) (29,633 ) (4,317 ) (1,571,372 ) (91,003 ) (13,250 ) to ordinary shareholders ----------- ----------- ----------- ----------- ----------- ----------- ----------- (Loss) profit per share Basic (2.20 ) (0.14 ) (0.04 ) (0.01 ) (2.54 ) (0.13 ) (0.02 ) Diluted (2.20 ) (0.14 ) (0.04 ) (0.01 ) (2.54 ) (0.13 ) (0.02 ) Shares used in (loss) profit per share computation Basic* 670,701,497 675,062,068 676,327,014 676,327,014 673,261,889 674,723,544 674,723,544 Diluted* 670,701,497 675,062,068 676,327,014 676,327,014 673,261,889 674,723,544 674,723,544 (Loss) profit per ADS (6 ordinary shares equal to 1 ADS) Basic (13.20 ) (0.84 ) (0.24 ) (0.06 ) (15.24 ) (0.78 ) (0.12 ) Diluted (13.20 ) (0.84 ) (0.24 ) (0.06 ) (15.24 ) (0.78 ) (0.12 ) * Shares used in (loss) profit per share/ADS computation were computed under weighted average method.

21VIANET GROUP, INC. RECONCILIATIONS OF GAAP AND NON-GAAP RESULTS (Amount in thousands of Renminbi (“RMB”) and US dollars (“US$”)) Three months ended Nine months ended September June 30, September 30, 2018 September30, 2018 30, September 30, 2018 2017 2017 RMB RMB RMB US$ RMB RMB US$ Gross profit 189,801 229,433 241,195 35,118 558,241 698,530 101,708 Plus: depreciation and 149,434 134,282 150,056 21,849 440,149 403,900 58,809 amortization Plus: share-based (181 ) 293 689 100 (361 ) 996 145 compensation expenses Adjusted cash gross profit 339,054 364,008 391,940 57,067 998,029 1,103,426 160,662 ---------- -------- -------- ------- ---------- --------- ------- Adjusted cash gross margin 38.3% 43.9% 45.0% 45.0% 38.0% 44.2% 44.2% Operating expenses (1,413,436 ) (177,937 ) (176,550 ) (25,707 ) (1,934,574 ) (525,950 ) (76,580 ) Plus: share-based 15,981 10,547 12,240 1,782 32,089 29,342 4,272 compensation expenses Plus: changes in the fair value of contingent purchase 1,002 5,494 1,413 206 (2,897 ) 4,623 673 consideration payable Plus: impairment of 401,808 - - - 401,808 - - long-lived assets Plus: Goodwill impairment 766,440 - - - 766,440 - - ---------- -------- -------- ------- ---------- --------- ------- Adjusted operating expenses (228,205 ) (161,896 ) (162,897 ) (23,719 ) (737,134 ) (491,985 ) (71,635 ) ---------- -------- -------- ------- ---------- --------- ------- Operating (loss) profit (1,223,635 ) 51,496 64,645 9,411 (1,376,333 ) 172,580 25,128 Plus: depreciation and 173,592 153,313 166,244 24,206 523,136 454,847 66,227 amortization Plus: share-based 15,800 10,840 12,929 1,882 31,728 30,338 4,417 compensation expenses Plus: changes in the fair value of contingent purchase 1,002 5,494 1,413 206 (2,897 ) 4,623 673 consideration payable Plus: impairment of 401,808 - - - 401,808 - - long-lived assets Plus: Goodwill impairment 766,440 - - - 766,440 - - ---------- -------- -------- ------- ---------- --------- ------- Adjusted EBITDA 135,007 221,143 245,231 35,705 343,882 662,388 96,445 ---------- -------- -------- ------- ---------- --------- ------- Adjusted EBITDA margin 15.2% 26.7% 28.2% 28.2% 13.1% 26.5% 26.5%

21VIANET GROUP, INC. SUPPLEMENTARY DISCLOSURE FOR HOSTING AND RELATED SERVICES (Amount in thousands of Renminbi (“RMB”) and US dollars (“US$”)) Three months ended Nine months ended September June 30, September30, 2018 September September 30, 2018 30, 2017 2018 30, 2017 GAAP Disclosure RMB RMB RMB US$ RMB RMB US$ Net revenues 759,255 828,317 870,068 126,684 2,209,364 2,499,150 363,883 Cost of revenues (542,179 ) (598,884 ) (628,873 ) (91,566 ) (1,564,633 ) (1,800,620 ) (262,175 ) -------- -------- -------- ------- ---------- ---------- -------- Gross profit 217,076 229,433 241,195 35,118 644,731 698,530 101,708 Sales and marketing (50,063 ) (41,816 ) (39,918 ) (5,812 ) (129,059 ) (122,966 ) (17,904 ) Research and development (22,167 ) (22,163 ) (24,333 ) (3,543 ) (68,257 ) (68,526 ) (9,978 ) General and administrative (98,766 ) (109,091 ) (110,243 ) (16,052 ) (301,805 ) (331,674 ) (48,293 ) (Allowance) reversal for (2,590 ) 627 (643 ) (94 ) (5,110 ) 1,839 268 doubtful debt Changes in the fair value of contingent purchase (1,002 ) (5,494 ) (1,413 ) (206 ) 2,897 (4,623 ) (673 ) consideration payable -------- -------- -------- ------- ---------- ---------- -------- Total operating expenses (174,588 ) (177,937 ) (176,550 ) (25,707 ) (501,333 ) (525,950 ) (76,580 ) -------- -------- -------- ------- ---------- ---------- -------- Other operating income 5,439 - - - 5,439 - - Operating profit 47,927 51,496 64,645 9,411 148,837 172,580 25,128 Non-GAAP disclosure Gross profit 217,076 229,433 241,195 35,118 644,731 698,530 101,708 Plus: depreciation and 98,693 134,282 150,056 21,849 283,593 403,900 58,809 amortization Plus: share-based (175 ) 293 689 100 (246 ) 996 145 compensation expenses Adjusted cash gross profit 315,594 364,008 391,940 57,067 928,078 1,103,426 160,662 -------- -------- -------- ------- ---------- ---------- -------- Adjusted cash gross margin 41.6% 43.9% 45.0% 45.0% 42.0% 44.2% 44.2% Operating expenses (174,588 ) (177,937 ) (176,550 ) (25,707 ) (501,333 ) (525,950 ) (76,580 ) Plus: share-based 15,501 10,547 12,240 1,782 32,089 29,342 4,272 compensation expenses Plus: changes in the fair value of contingent purchase 1,002 5,494 1,413 206 (2,897 ) 4,623 673 consideration payable -------- -------- -------- ------- ---------- ---------- -------- Adjusted operating expenses (158,085 ) (161,896 ) (162,897 ) (23,719 ) (472,141 ) (491,985 ) (71,635 ) -------- -------- -------- ------- ---------- ---------- -------- Operating profit 47,927 51,496 64,645 9,411 148,837 172,580 25,128 Plus: depreciation and 111,510 153,313 166,244 24,206 322,010 454,847 66,227 amortization Plus: share-based 15,326 10,840 12,929 1,882 31,843 30,338 4,417 compensation expenses Plus: changes in the fair value of contingent purchase 1,002 5,494 1,413 206 (2,897 ) 4,623 673 consideration payable -------- -------- -------- ------- ---------- ---------- -------- Adjusted EBITDA 175,765 221,143 245,231 35,705 499,793 662,388 96,445 -------- -------- -------- ------- ---------- ---------- -------- Adjusted EBITDA margin 23.1% 26.7% 28.2% 28.2% 22.6% 26.5% 26.5%

21VIANET GROUP, INC. CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (Amount in thousands of Renminbi (“RMB”) and US dollars (“US$”)) September30, June 30, September30, 2018 2017 2018 RMB RMB RMB US$ (Unaudited) (Unaudited) (Unaudited) (Unaudited ) CASH FLOWS FROM OPERATING ACTIVITIES Net loss (1,479,119 ) (95,531 ) (27,894 ) (4,064 ) Adjustments to reconcile net loss to net cash generated from operating activities: Depreciation and amortization 173,592 153,313 166,244 24,206 Impairment of long-lived assets 401,808 - - - Impairment of goodwill 766,440 - - - Stock-based compensation expenses 15,720 10,840 12,929 1,882 Loss from disposal of subsidiaries 180,048 - - - Others 12,421 93,201 41,616 6,059 Changes in operating assets and liabilities Accounts and notes receivable 36,562 (29,540 ) (34,113 ) (4,967 ) Prepaid expenses and other current assets (119,384 ) (14,088 ) (37,448 ) (5,453 ) Accounts and notes payable 26,379 (4,819 ) 37,690 5,488 Accrued expenses and other payables 120,015 25,971 (19,359 ) (2,819 ) Deferred revenue (11,598 ) 6,217 11,154 1,624 Advances from customers 77,225 (1,698 ) 114,528 16,676 Others 6,455 (32,468 ) (4,632 ) (672 ) Net cash generated from operating activities 206,564 111,398 260,715 37,960 ---------- --------- --------- ------- CASH FLOWS FROM INVESTING ACTIVITIES Purchases of property and equipment (77,872 ) (91,256 ) (123,027 ) (17,913 ) Purchases of intangible assets (43 ) (3,756 ) (4,032 ) (587 ) Disposal of subsidiaries, net of cash (77,719 ) - - - Payments for investments (399,035 ) (39,098 ) (196,319 ) (28,585 ) Proceeds from minority equity interest transfer of a - - 196,129 28,557 subsidiary Proceeds from other investing activities 6,115 357,302 18,061 2,630 Net cash (used in) generated from investing activities (548,554 ) 223,192 (109,188 ) (15,898 ) ---------- --------- --------- ------- CASH FLOWS FROM FINANCING ACTIVITIES Repayment of loan from a third party (100,000 ) - - - Proceeds from issuance of 2020 bonds 1,316,974 - - - Repayment of long-term bank borrowings (40,676 ) - - - Repayment of short-term bank borrowings (11,843 ) - - - Repayments of bank borrowings - (27,953 ) - - Payments for capital lease (39,280 ) (95,183 ) (50,996 ) (7,425 ) Withdrawal of advance for shares repurchase plan - - 42,710 6,219 Payment for shares repurchase plan (50,054 ) - - - (Payments for) proceeds from other financing activities (34,746 ) 38,801 89,810 13,077 Contribution from noncontrolling interest in a subsidary 62,357 - - - Net cash generated from (used in) financing activities 1,102,732 (84,335 ) 81,524 11,871 ---------- --------- --------- ------- Effect of foreign exchange rate changes on cash, cash (86,759 ) 80,660 63,732 9,280 equivalents and restricted cash Net increase in cash, cash equivalents and restricted cash 673,983 330,915 296,783 43,213 Cash, cash equivalents and restricted cash at beginning of 2,676,069 2,108,237 2,439,152 355,147 period ---------- --------- --------- ------- Cash, cash equivalents and restricted cash at end of period 3,350,052 2,439,152 2,735,935 398,360 ---------- --------- --------- ------- Notes: The Company adopted Accounting Standards Update (“ASU”) No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash on January 1, 2018 and retrospectively adjusted the condensed consolidated statement of cash flows for the three months ended September 30, 2017 by excluding the movement of restricted cash of RMB53.1 million.

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