Exhibit 99.1

21Vianet Group, Inc. Reports Fourth Quarter and Full

Year 2015 Unaudited Financial Results

Live Conference Call to be Held at 8:00 PM U.S. Eastern Time, March 10, 2016

BEIJING, March 10, 2016 (GLOBE NEWSWIRE) — 21Vianet Group, Inc. (Nasdaq: VNET) (“21Vianet” or the “Company”), a leading carrier-neutral internet data center services provider in China, today announced its unaudited financial results for the fourth quarter and full year 2015. The Company will hold a conference call at 8:00 p.m. Eastern Time on March 10, 2016. Dial-in details are provided at the end of the release.

Fourth Quarter 2015 Financial Highlights

• Net revenues increased by 15.2% to RMB983.4 million (US$151.8 million) from RMB853.9 million in the comparative period in 2014.

Full Year 2015 Financial Highlights

• Net revenues increased by 26.3% to RMB3.6 billion (US$561.1 million) from RMB2.9 billion in 2014.

• Adjusted gross profit increased by 10.7% to RMB1.0 billion (US$158.0 million) from RMB924.2 million in 2014.

Mr. Steve Zhang, Chief Executive Officer of the Company, stated, “For the fourth quarter, I am pleased to see that we have experienced growth momentum in our internet data center (IDC), cloud, content delivery network (CDN), and VPN businesses. For our IDC business, we further increased cabinet sales during the quarter while having minor increase in our MRR, and steady utilization and churn rates during the quarter. Demand for our cloud services was strong as we continued to gain traction with Windows Azure and Office365 product offerings. Following slower than expected third quarter results, our CDN services picked up momentum in the fourth quarter in both revenue growth and customer recognition as we further increased our market share. Our VPN business continued to see solid demand supported by the strong performance of the DYX group in the fourth quarter. Our managed network services (MNS) continues to be soft as expected, which was caused by the continued industry-wide decline in bandwidth pricing. We recognized these industry challenges, but as we restructure our business and invest in our core growth opportunities, we are confident in our ability to address these challenges and accelerate growth in the future.”

Mr. Terry Wang, Chief Financial Officer of the Company, commented, “We ended the year with another quarter marked by steady top line growth, as we saw total revenues increased by 15.2% year over year to RMB983.4 million (US$151.8 million). Overall growth was highlighted by solid performance in IDC, cloud, CDN and VPN businesses, while partially offset by continued weakness in the MNS business. In the fourth quarter, our EBITDA was also negatively impacted by restructuring costs and bad debt expenses. Going forward, as we fine-tune our cost structure and further optimize operations, we remain confident we will be able to reignite margin growth both financially and operationally.”

Fourth Quarter 2015 Financial Results

REVENUES: Net revenues for the fourth quarter of 2015 increased by 15.2% to RMB983.4 million (US$151.8 million) from RMB853.9 million in the comparative period in 2014, primarily driven by a year-over-year increase of billable cabinets under management and continuous growth in demand for the Company’s cloud, CDN and enterprise VPN services.

Net revenues from hosting and related services increased by 26.6% to RMB754.7 million (US$116.5 million) in the fourth quarter of 2015 from RMB596.2 million in the comparative period in 2014, primarily due to the abovementioned year-over-year increase in total number of billable cabinets and the growth in demand for the Company’s cloud business. Net revenues from MNS were RMB228.7 million (US$35.3 million) in the fourth quarter of 2015, as compared to RMB257.7 million in the comparative period in 2014. The decrease is primarily due to the continued industry-wide decline in bandwidth prices and the loss of certain customers.

GROSS PROFIT: Gross profit for the fourth quarter of 2015 was RMB219.2 million (US$33.8 million), as compared to RMB238.0 million in the comparative period in 2014. Gross margin for the fourth quarter of 2015 was 22.3%, compared with 27.9% in the comparative period in 2014. The decrease in gross margin was primarily due to higher spending on telecommunication services and continued softness in the Company’s MNS business.

Adjusted gross profit, which excludes share-based compensation expenses and amortization of intangible assets derived from acquisitions, was RMB264.3 million (US$40.8 million), compared with RMB290.7 million in the comparative period in 2014. Adjusted gross margin was 26.9% in the fourth quarter of 2015, compared with 34.0% in the comparative period in 2014.

OPERATING EXPENSES: Total operating expenses decreased to RMB314.5 million (US$48.5 million) from RMB344.3 million in the comparative period in 2014. Adjusted operating expenses, which exclude share-based compensation expenses and the changes in the fair value of contingent purchase consideration payable, increased to RMB275.9 million (US$42.6 million) from RMB234.4 million in the comparative period in 2014. As a percentage of net revenue, adjusted operating expenses were 28.1%, compared with 27.5% in the comparative period in 2014 and 25.0% in the third quarter of 2015.

Sales and marketing expenses increased by 1.7% to RMB101.8 million (US$15.7 million) from RMB100.1 million in the comparative period in 2014, primarily due to higher service fees, which were partially offset by lower labor costs as the Company outsourced some functions to more cost-effective service providers.

General and administrative expenses increased by 4.1% to RMB166.1 million (US$25.6 million) from RMB159.6 million in the comparative period in 2014, primarily due to a one-time charge related to an accounts receivable provision of approximately RMB22 million (US$3.4 million), which was offset by decrease of share based compensation cost.

Research and development expenses increased by 4.2% to RMB41.6 million (US$6.4 million) in the fourth quarter of 2015 from RMB39.9 million in the comparative period in 2014.

Change in the fair value of contingent purchase consideration payable was a loss of RMB5.1 million (US$0.8 million) in the fourth quarter of 2015, compared with a loss of RMB44.8 million in the comparative period in 2014.

ADJUSTED EBITDA: Adjusted EBITDA for the fourth quarter of 2015 was RMB102.1 million (US$15.8 million), compared with RMB160.1 million in the comparative period in 2014. Adjusted EBITDA margin for the quarter was 10.4% compared with 18.8% in the comparative period in 2014 and 13.2% in the third quarter of 2015. Adjusted EBITDA in the fourth quarter of 2015 excludes share-based compensation expenses of RMB40.1 million (US$6.2 million) and changes in the fair value of contingent purchase consideration payable which was a loss of RMB5.1 million (US$0.8 million).

NET PROFIT/LOSS: Net loss for the fourth quarter of 2015 was RMB112.9 million (US$17.4 million), compared with a net loss of RMB155.5 million in the comparative period in 2014.

Adjusted net loss for the fourth quarter of 2015 was RMB29.1 million (US$4.5 million) compared with an adjusted net profit of RMB7.1 million in the comparative period in 2014. Adjusted net loss in the fourth quarter of 2015 excludes share-based compensation expenses of RMB40.1 million (US$6.2 million), amortization of intangible assets derived from acquisitions of RMB38.6 million (US$6.0 million), changes in the fair value of contingent purchase consideration payable which was a loss of RMB5.1 million (US$0.8 million) in the aggregate. Adjusted net margin was negative 3.0%, compared with 0.8% in the comparative period in 2014 and 1.7% in the third quarter of 2015.

EARNING/LOSS PER SHARE: Diluted loss per ordinary share for the fourth quarter of 2015 was RMB0.24, which represents the equivalent of RMB1.44 (US$0.22) per American Depositary Share (“ADS”). Each ADS represents six ordinary shares. Adjusted diluted loss per share for the fourth quarter of 2015 was RMB0.08, which represents the equivalent of RMB0.48 (US$0.07) per ADS. Adjusted loss per share is calculated using adjusted net loss as discussed above divided by the weighted average number of shares.

As of December 31, 2015, the Company had a total of 522.5 million ordinary shares outstanding, or the equivalent of 87.1 million ADSs.

BALANCE SHEET: As of December 31, 2015, the Company’s cash and cash equivalents and short-term investment were RMB1.79 billion (US$276.3 million).

Fourth Quarter 2015 Operational Highlights

• Monthly Recurring Revenues (“MRR”) per cabinet was RMB10,030 in the fourth quarter of 2015, compared with RMB9,900 in the third quarter of 2015.

• Total cabinets under management increased to 23,556 as of December 31, 2015 from 22,827 as of September 30, 2015, with 15,998 cabinets in the Company’s self-built data centers and 7,558 cabinets in its partnered data centers.

• Utilization rate was 71.7% in the fourth quarter of 2015, compared with 71.8% in the third quarter of 2015.

• Hosting churn rate, which is based on the Company’s core IDC business, was 0.14% in the fourth quarter of 2015, compared with 0.26% in the third quarter of 2015.

Full Year 2015 Financial Performance

For the full year of 2015, net revenue increased by 26.3% to RMB3.6 billion (US$561.1 million) from RMB2.9 billion in the prior year. Adjusted EBITDA for the full year was RMB540.4 million (US$83.4 million), compared with RMB558.9 million in the prior year. Adjusted EBITDA margin was 14.9%, compared with 19.4% in the prior year. Adjusted EBITDA for the full year excludes share-based compensation expense of RMB190.0 million (US$29.3 million) and changes in the fair value of contingent purchase consideration payable of RMB43.3 million (US$6.7 million). Adjusted net loss for the full year was RMB10.8 million (US$1.7 million), compared with profit of RMB79.4 million in the prior year. Adjusted net loss in the full year excludes share-based compensation expense of RMB190.0 million (US$29.3 million), amortization of intangible assets derived from acquisitions of RMB157.1 million (US$24.3 million), and changes in the fair value of contingent purchase consideration payable and related deferred tax assets of RMB43.3 million (US$6.7 million). Adjusted diluted loss per share for the full year of 2015 was RMB0.06 (US$0.01), which represents the equivalent of RMB0.36 (US$0.06) per ADS.

Recent Developments

On December 16, 2015, at the 2^nd World Internet Conference - Wuzhen Summit, the Company and TUS Holdings signed a memorandum of cooperation in the establishment of Century United “One Belt One Road” digital economy development fund, which adopts the form of fund of funds with a total size of US$10 billion. The fund will be committed to boosting investment cooperation and synergetic developments in member countries of the “One Belt One Road” initiative.

On December 17, 2015, the Company signed the internet information infrastructure investment and services agreement with Dataline, Inc. the largest commercial data center operator in Russia. Under this agreement, the parties will strengthen cooperation in data center services, cloud computing, and hybrid IT services.

Conference Call

The Company will hold a conference call on Thursday, March 10, 2016 at 8:00 pm Eastern Time, or Friday, March 11, 2016 at 9:00 am Beijing Time to discuss the financial results.

Participants may access the call by dialing the following numbers:

United States:	+1-845-675-0438
International Toll Free:	+1-855-500-8701
China Domestic:	400-1200654
Hong Kong:	+852-3018-6776
Conference ID:	# 54691847
The replay will be accessible through March 17, 2016 by dialing the following numbers:
United States Toll Free:	+1-855-452-5696
International:	+61-2-90034211
Conference ID:	# 54691847

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 gross profit, adjusted gross margin, adjusted operating expenses, adjusted net profit, adjusted net margin, adjusted EBITDA, adjusted EBITDA margin, adjusted basic earnings per share, adjusted diluted earnings per share, adjusted basic earnings per ADS and adjusted diluted earnings per ADS. 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 RMB6.4778 to US$1.00, the noon buying rate in effect on December 31, 2015 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-neutral Internet data center services provider in China. 21Vianet provides hosting and related services, managed network services, cloud services, content delivery network services, last-mile wired broadband services and business VPN services, improving the reliability, security and speed of its customers’ Internet infrastructure. Customers may locate their servers and networking equipment in 21Vianet’s data centers and connect to China’s Internet backbone through 21Vianet’s extensive fiber optic network. In addition, 21Vianet’s proprietary smart routing technology enables customers’ data to be delivered across the Internet in a faster and more reliable manner. 21Vianet operates in more than 30 cities throughout China, servicing a diversified and loyal base of more than 2,000 hosting 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.

Eric Chu, CFA

+1 908 707 2062

IR@21Vianet.com

Queenie Liu

+86 10 8456 2121

IR@21Vianet.com

ICR, Inc.

Charles Eveslage

+1 (646) 405-4922

IR@21Vianet.com

Source: 21Vianet Group, Inc.

21VIANET GROUP, INC.

CONSOLIDATED BALANCE SHEETS

(Amount in thousands of Renminbi (“RMB”) and US dollars (“US$”))

	As of		As of
	December 31, 2014		December 31, 2015
	RMB		RMB		US$
	(Audited)		(Unaudited)		(Unaudited)
Assets
Current assets:
Cash and cash equivalents		644,415		1,685,054		260,128
Restricted cash		161,649		195,230		30,138
Accounts and notes receivable, net		739,945		694,108		107,152
Short-term investments		911,242		104,897		16,193
Inventories		10,059		13,539		2,090
Prepaid expenses and other current assets		309,441		652,630		100,748
Deferred tax assets		35,002		31,113		4,803
Amount due from related parties		54,867		105,137		16,230
Total current assets		2,866,620		3,481,708		537,482
Non-current assets:
Property and equipment, net		3,036,707		3,653,071		563,937
Intangible assets, net		1,404,453		1,274,166		196,697
Land use right		66,175		64,682		9,985
Deferred tax assets		42,573		46,900		7,240
Goodwill		1,755,970		1,755,970		271,075
Long term investments		126,307		198,907		30,706
Restricted cash		121,415		128,515		19,839
Amount due from related parties		98,500		70,000		10,806
Other non-current assets		121,461		189,991		29,330
Total non-current assets		6,773,561		7,382,202		1,139,615
Total assets		9,640,181		10,863,910		1,677,097
Liabilities and Shareholders’ Equity
Current liabilities:
Short-term bank borrowings		160,181		276,000		42,607
Accounts and notes payable		386,074		482,622		74,504
Accrued expenses and other payables		599,491		637,957		98,483
Deferred revenue		347,441		342,105		52,812
Advances from customers		97,679		185,800		28,683
Income taxes payable		35,013		49,959		7,712
Amounts due to related parties		326,804		397,588		61,377
Current portion of long-term bank borrowings		955,647		38,803		5,990
Current portion of capital lease obligations		71,939		140,488		21,688
Current portion of deferred government grant		6,150		6,332		977
Current portion of bonds payable		—		264,250		40,793
Deferred tax liabilities		2,696		—		—
Total current liabilities		2,989,115		2,821,904		435,626
Non-current liabilities:
Long-term bank borrowings		61,673		103,421		15,965
Deferred revenue		74,044		68,535		10,580
Amounts due to related parties		280,728		27,384		4,227
Unrecognized tax benefits		20,453		14,492		2,237
Deferred tax liabilities		310,340		293,212		45,264
Non-current portion of capital lease obligations		511,679		579,070		89,393

	As of			As of
	December 31, 2014			December 31, 2015
	RMB			RMB			US$
	(Audited)			(Unaudited)			(Unaudited)
Non-current portion of deferred government grant		27,422			31,288			4,830
Bonds payable		2,264,064			2,000,000			308,747
Mandatorily redeemable noncontrolling interests		100,000			100,000			15,437
Total non-current liabilities		3,650,403			3,217,402			496,680
Redeemable noncontrolling interests		773,706			790,229			121,990
Shareholders’ equity
Treasury stock		(213,665	)		(193,142	)		(29,816	)
Ordinary shares		26			34			5
Additional paid-in capital		4,225,029			6,403,117			988,471
Accumulated other comprehensive income loss		(65,754	)		(24,236	)		(3,741	)
Statutory reserves		52,263			63,174			9,752
Accumulated deficit		(1,794,975	)		(2,233,985	)		(344,867	)
Total 21Vianet Group, Inc. shareholders’ equity		2,202,924			4,014,962			619,804
Non-controlling interest		24,033			19,413			2,997
Total shareholders’ equity		2,226,957			4,034,375			622,801
Total liabilities and shareholders’ equity		9,640,181			10,863,910			1,677,097

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												Year ended
	December 31, 2014			September 30, 2015			December 31, 2015						December 31, 2014			December 31, 2015
	RMB			RMB			RMB			US$			RMB			RMB			US$
	(Unaudited)			(Unaudited)			(Unaudited)			(Unaudited)			(Unaudited)			(Unaudited)			(Unaudited)
Net revenues
Hosting and related services		596,221			695,802			754,706			116,507			1,980,688			2,707,445			417,957
Managed network services		257,689			228,293			228,677			35,301			895,759			926,927			143,093
Total net revenues		853,910			924,095			983,383			151,808			2,876,447			3,634,372			561,050
Cost of revenues		(615,877	)		(723,828	)		(764,214	)		(117,974	)		(2,066,304	)		(2,780,614	)		(429,253	)
Gross profit		238,033			200,267			219,169			33,834			810,143			853,758			131,797
Operating expenses
Sales and marketing		(100,075	)		(89,232	)		(101,797	)		(15,715	)		(287,229	)		(359,460	)		(55,491	)
General and administrative		(159,576	)		(138,783	)		(166,064	)		(25,636	)		(493,309	)		(600,940	)		(92,769	)
Research and development		(39,906	)		(35,176	)		(41,569	)		(6,417	)		(121,676	)		(142,835	)		(22,050	)
Changes in the fair value of contingent purchase consideration payable		(44,789	)		(676	)		(5,060	)		(781	)		(22,629	)		(43,325	)		(6,688	)
Total operating expenses		(344,346	)		(263,867	)		(314,490	)		(48,549	)		(924,843	)		(1,146,560	)		(176,998	)
Other operating income		—			—			—			—			—			8,569			1,323
Operating loss		(106,313	)		(63,600	)		(95,321	)		(14,715	)		(114,700	)		(284,233	)		(43,878	)
Interest income		12,862			13,523			5,692			879			67,904			53,494			8,258
Interest expense		(66,531	)		(69,690	)		(60,963	)		(9,411	)		(232,020	)		(274,184	)		(42,327	)
Loss on debt extinguishment		—			—			—			—			(41,581	)		—			—
Income (loss) from equity method investment		78			706			40,231			6,211			(671	)		52,355			8,082
Other income		15,413			5,779			20,115			3,105			26,560			30,430			4,698
Other expense		(70	)		(719	)		(1,848	)		(285	)		(1,040	)		(3,701	)		(571	)
Foreign exchange (loss) gain		(8,756	)		60,248			7,248			1,119			(16,256	)		72,394			11,176
Loss before income taxes		(153,317	)		(53,753	)		(84,846	)		(13,097	)		(311,804	)		(353,445	)		(54,562	)
Income tax expense		(2,168	)		(4,132	)		(28,044	)		(4,329	)		(16,673	)		(47,830	)		(7,384	)
Consolidated net loss		(155,485	)		(57,885	)		(112,890	)		(17,426	)		(328,477	)		(401,275	)		(61,946	)
Net loss attributable to non- controlling interest		(18,603	)		(4,257	)		(11,194	)		(1,728	)		(20,003	)		(26,824	)		(4,141	)
Net loss attributable to ordinary shareholders		(174,088	)		(62,142	)		(124,084	)		(19,154	)		(348,480	)		(428,099	)		(66,087	)
Loss per share
Basic		(0.44	)		(0.12	)		(0.24	)		(0.04	)		(0.87	)		(0.85	)		(0.13	)
Diluted		(0.44	)		(0.12	)		(0.24	)		(0.04	)		(0.87	)		(0.85	)		(0.13	)
Shares used in earnings per share computation
Basic*		400,031,170			521,376,112			523,366,544			523,366,544			401,335,788			492,065,239			492,065,239
Diluted*		400,031,170			521,376,112			523,366,544			523,366,544			401,335,788			492,065,239			492,065,239
Loss per ADS (6 ordinary shares equal to 1 ADS)
Basic		(2.64	)		(0.72	)		(1.44	)		(0.22	)		(5.22	)		(5.10	)		(0.79	)
Diluted		(2.64	)		(0.72	)		(1.44	)		(0.22	)		(5.22	)		(5.10	)		(0.79	)

* Shares used earnings 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$”) except for number of shares and per share data)

	Three months ended												Year ended
	December 31, 2014			September 30, 2015			December 31, 2015						December 31, 2014			December 31, 2015
	RMB			RMB			RMB			US$			RMB			RMB			US$
Gross profit		238,033			200,267			219,169			33,834			810,143			853,758			131,797
Plus: share-based compensation expense		3,722			1,323			6,582			1,016			7,163			12,422			1,918
Plus: amortization of intangible assets derived from acquisitions		48,953			38,933			38,583			5,956			106,922			157,119			24,255
Adjusted gross profit		290,708			240,523			264,334			40,806			924,228			1,023,299			157,970
Adjusted gross margin		34.0	%		26.0	%		26.9	%		26.9	%		32.1	%		28.2	%		28.2	%
Operating expenses		(344,346	)		(263,867	)		(314,490	)		(48,549	)		(924,843	)		(1,146,560	)		(176,998	)
Plus: share-based compensation expense		65,144			32,328			33,537			5,177			226,572			177,605			27,417
Plus: changes in the fair value of contingent purchase consideration payable		44,789			676			5,060			781			22,629			43,325			6,688
Adjusted operating expenses		(234,413	)		(230,863	)		(275,893	)		(42,591	)		(675,642	)		(925,630	)		(142,893	)
Net loss		(155,485	)		(57,885	)		(112,890	)		(17,426	)		(328,477	)		(401,275	)		(61,946	)
Plus: share-based compensation expense		68,866			33,651			40,119			6,193			233,735			190,027			29,335
Plus: amortization of intangible assets derived from acquisitions		48,953			38,933			38,583			5,956			106,922			157,119			24,255
Plus: changes in the fair value of contingent purchase consideration payable and related deferred tax impact		44,789			676			5,060			781			25,613			43,325			6,688
Plus: loss on debt extinguishment		—			—			—			—			41,581			—			—
Adjusted net profit (loss)		7,123			15,375			(29,128	)		(4,496	)		79,374			(10,804	)		(1,668	)
Adjusted net margin		0.8	%		1.7	%		-3.0	%		-3.0	%		2.8	%		-0.3	%		-0.3	%
Net loss		(155,485	)		(57,885	)		(112,890	)		(17,426	)		(328,477	)		(401,275	)		(61,946	)
Minus: Provision for income taxes		(2,168	)		(4,132	)		(28,044	)		(4,329	)		(16,673	)		(47,830	)		(7,384	)
Minus: Interest income		12,862			13,523			5,692			879			67,904			53,494			8,258
Minus: Interest expenses		(66,531	)		(69,690	)		(60,963	)		(9,411	)		(232,020	)		(274,184	)		(42,327	)
Minus: loss on debt extinguishment		—			—			—			—			(41,581	)		—			—
Minus: Exchange (loss) gain		(8,756	)		60,248			7,248			1,119			(16,256	)		72,394			11,176
Minus: Income (loss) from equity method investment		78			706			40,231			6,211			(671	)		52,355			8,082
Minus: Other income		15,413			5,779			20,115			3,105			26,560			30,430			4,698
Minus: Other expenses		(70	)		(719	)		(1,848	)		(285	)		(1,040	)		(3,701	)		(571	)
Plus: depreciation		93,240			104,340			105,355			16,264			278,986			402,035			62,064
Plus: amortization		59,536			46,947			46,917			7,243			138,288			189,257			29,216
Plus: share-based compensation expense		68,866			33,651			40,119			6,193			233,735			190,027			29,335
Plus: changes in the fair value of contingent purchase consideration payable		44,789			676			5,060			781			22,629			43,325			6,688
Adjusted EBITDA		160,118			122,014			102,130			15,766			558,938			540,411			83,425
Adjusted EBITDA margin		18.8	%		13.2	%		10.4	%		10.4	%		19.4	%		14.9	%		14.9	%
Adjusted net profit (loss)		7,123			15,375			(29,128	)		(4,496	)		79,374			(10,804	)		(1,668	)
Less: Net loss attributable to non-controlling interest		(18,603	)		(4,257	)		(11,194	)		(1,728	)		(20,003	)		(26,824	)		(4,141	)
Adjusted net (loss) profit attributable to the Company’s ordinary shareholders		(11,480	)		11,118			(40,322	)		(6,224	)		59,371			(37,628	)		(5,809	)
Adjusted (loss) earnings per share
Basic		(0.03	)		0.02			(0.08	)		(0.01	)		0.15			(0.06	)		(0.01	)
Diluted		(0.03	)		0.02			(0.08	)		(0.01	)		0.14			(0.06	)		(0.01	)
Shares used in adjusted earnings per share computation:
Basic*		400,031,170			521,376,112			523,366,544			523,366,544			401,335,788			492,065,239			492,065,239
Diluted*		400,031,170			536,927,693			523,366,544			523,366,544			416,528,735			492,065,239			492,065,239
(Loss) earnings per ADS (6 ordinary shares equal to 1 ADS)
Basic		(0.18	)		0.12			(0.48	)		(0.07	)		0.90			(0.36	)		(0.06	)
Diluted		(0.18	)		0.12			(0.48	)		(0.07	)		0.84			(0.36	)		(0.06	)

* Shares used in adjusted earnings/ADS per share computation were computed under weighted average method.

21VIANET GROUP, INC.

CONSOLIDATED STATEMENT OF CASH FLOWS

(Amount in thousands of Renminbi (“RMB”) and US dollars (“US$”))

	Three months ended
	September 30, 2015			December 31, 2015
	RMB			RMB			US$
	(Unaudited)			(Unaudited)			(Unaudited)
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss		(57,885	)		(112,890	)		(17,426	)
Adjustments to reconcile net loss to net cash generated from operating activities:
Foreign exchange gain		(60,248	)		(7,248	)		(1,119	)
Changes in the fair value of contingent purchase consideration payable		676			5,060			781
Depreciation of property and equipment		104,340			105,355			16,264
Amortization of intangible assets		46,016			46,336			7,153
Loss (gain) on disposal of property and equipment		167			(222	)		(34	)
Provision for doubtful accounts and other receivables		6,971			21,672			3,346
Share-based compensation expense		21,339			52,430			8,094
Deferred income taxes (benefit) expense		(10,158	)		9,521			1,470
Gain from equity method investment		(706	)		(40,231	)		(6,211	)
Changes in operating assets and liabilities
Restricted cash		(9,933	)		(42,558	)		(6,570	)
Inventories		3,297			(4,733	)		(731	)
Accounts and notes receivable		(43,713	)		67,850			10,474
Unrecognized tax expense		602			1,993			308
Prepaid expenses and other current assets		(40,330	)		2,371			366
Amounts due from related parties		(1,452	)		(15,475	)		(2,389	)
Accounts and notes payable		36,276			35,394			5,464
Accrued expenses and other payables		42,118			28,842			4,452
Deferred revenue		5,800			7,449			1,150
Advances from customers		43,978			8,562			1,322
Income taxes payable		12,746			(6,861	)		(1,059	)
Amounts due to related parties		3,777			(324	)		(50	)
Deferred government grants		(1,553	)		(1,389	)		(215	)
Net cash generated from operating activities		102,125			160,904			24,840
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property and equipment		(220,645	)		(297,136	)		(45,870	)
Purchases of intangible assets		(16,353	)		(2,567	)		(396	)
Proceeds from disposal of property and equipment		401			6,401			988
Advances of loan to third parties		(5,104	)		(62,578	)		(9,660	)
Payments for short-term investments		(88,145	)		(34,634	)		(5,347	)
Proceeds received from maturity of short-term investments		1,090,577			412,249			63,640
Net cash generated from investing activities		760,731			21,735			3,355
CASH FLOWS FROM FINANCING ACTIVITIES
Restricted cash		(31,176	)		(10,957	)		(1,691	)
Proceeds from exercise of stock options		1,309			1,545			238
Proceeds from long-term bank borrowings		—			11,290			1,743
Proceeds from short-term bank borrowings		40,000			81,000			12,504
Repayments of short-term bank borrowings		(20,000	)		(75,000	)		(11,578	)
Repayments of long-term bank borrowings		(902,496	)		8,575			1,324
Payments for acquisitions		(4,543	)		(14,767	)		(2,280	)
Interest payment for 2016 Bond		(10,386	)		10,386			1,603
Payments for capital leases		(21,182	)		(24,001	)		(3,705	)
Rental prepayments and deposits for sales and leaseback transactions		—			(13,000	)		(2,007	)
Proceeds from sales and leaseback transactions		—			130,000			20,069
Net cash (used in) generated from financing activities		(948,474	)		105,071			16,220
Effect of foreign exchange rate changes on cash and short term investments		43,448			(2,121	)		(327	)
Net (decrease) increase in cash and cash equivalents		(42,170	)		285,589			44,088
Cash and cash equivalents at beginning of period		1,441,635			1,399,465			216,040
Cash and cash equivalents at end of period		1,399,465			1,685,054			260,128