Document:

EX-4.4

 Exhibit 4.4 

PROXY AGREEMENT 

September 22, 2020 
 This
PROXY AGREEMENT (this “Agreement”) is entered into as of the date set forth above by and between (i) BCPE Stack ESOP Holdco Limited, an exempted company incorporated under the laws of the Cayman Islands with limited
liability (the “Company”), and (ii) Abiding Joy Limited, a BVI business company incorporated under the laws of British Virgin Islands (“Abiding Joy”). 

WHEREAS, as of the date hereof, the Company has (a) issued an aggregate amount of 1,000 class A shares which are outstanding (such
shares, the “Class A Shares”), all of which are held by BCPE Stack Holdings, L.P., an exempted limited partnership established under the laws of the Cayman Islands (“Stack Holdings”) and
(b) issued an aggregate amount of 17,633,120 class B Shares pursuant to the BCPE Stack ESOP Holdco Limited Share Option Plan (the “ESOP Plan”), which are outstanding (such shares, the “Class B
Shares”), out of which, 11,177,098 Class B Shares are held by Abiding Joy; 
 WHEREAS, pursuant to the memorandum and articles
of association of the Company in effect as of the date hereof, no shareholder of the Company holding Class B Shares shall have any right to vote in respect of such Class B Shares; 

WHEREAS, pursuant to the ESOP Plan, at any time after an IPO (as defined below), each Person who holds Class B Shares that have vested in
accordance with their terms shall have the right (each, an “Exchange Right Holder”), subject to the consent of holders of majority of the Class A Shares, to elect to exchange (the “Exchange”) all (but not less
than all) of the Class B Shares that have vested in accordance with their terms then held by such Exchange Right Holder for the same number of ordinary shares of Chindata Group Holdings Limited, an exempted company incorporated under the laws
of the Cayman Islands with limited liability (“Chindata”); 
 WHEREAS, the Company, Abiding Joy, and Mr. Ju Jing
(居静), a PRC citizen whose ID number is              (“Mr. Ju”) are parties to that certain Fourth Amended and Restated Shareholders
Agreement of Chindata, dated as of August 18, 2020 (as may be amended, restated, modified or supplemented from time to time, the “Chindata Shareholders Agreement”); 

WHEREAS, as of the date hereof, the Company holds 17,633,120 ordinary shares of Chindata (such shares, as may be adjusted for any share
splits, share combinations or similar types of capital restructuring, including the re-designation of the share capital of Chindata into class A ordinary shares and class B ordinary shares which is currently
contemplated to take effect in connection with an IPO, the “Subject Shares”); and 
 NOW, THEREFORE, in consideration of
the foregoing, the mutual covenants and agreements set forth herein, and other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the parties hereto agree as follows: 

  
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 ARTICLE I 

APPOINTMENT OF PROXY 

Section 1.1    Appointment of Proxy. Subject to compliance with all applicable laws (including securities
laws), the Company hereby makes, constitutes and appoints Abiding Joy, with effect from and after the closing of an initial public offering or listing of the ordinary shares (or depositary shares representing ordinary shares) of Chindata on the New
York Stock Exchange or the Nasdaq National Market (an “IPO”) until the Expiration Time (as defined below), as its true and lawful proxy and
attorney-in-fact, with full power to appoint a nominee or nominees to act hereunder from time to time and to vote or cause to be voted the relevant Subject Shares at any
shareholders’ meeting of Chindata (including any annual or extraordinary general meeting of the shareholders of Chindata, however called, and including any meeting of the holders of any class of shares to which the Subject Shares belong),
including any adjournment thereof, with the same force and effect as the Company might or could do. For the avoidance of doubt, to the extent the Company holds equity securities of Chindata other than the Subject Shares (the “Additional
Shares”) after the date hereof, either through new issuance by Chindata to the Company or through the Company purchasing from other shareholders of Chindata, the Company (controlled by Stack Holdings) shall have the sole voting rights with
respect to such Additional Shares at any shareholders’ meeting of Chindata (including annual or extraordinary general meeting of the shareholders of Chindata, however called, and including any meeting of the holders of any class of shares to
which the Additional Shares belong) and the proxy hereunder shall not apply to such Additional Shares. 

Section 1.2    Expiration Time. For purposes of this Agreement, “Expiration Time” shall mean
the earlier to occur of (a) with respect to any Subject Shares, when such Subject Shares are no longer held by the Company, including due to such Subject Shares having been transferred to any Exchange Right Holder pursuant to the Exchange and
(b) with respect to all Subject Shares, when (i) Mr. Ju (or any other Affiliate of Mr. Ju) ceases to hold any Class B Shares or (ii) (x) Mr. Ju ceases to act as Chief Executive Officer of Chindata and
(y) Mr. Ju ceases to act as a director of Chindata due to his voluntary resignation or due to his removal following the occurrence of an Event of Default by Mr. Ju or any of his Affiliates. 

ARTICLE II 
 TERMINATION

 This Agreement shall terminate and be of no further force or effect if an IPO has not occurred on or prior to December 31, 2021.

 ARTICLE III 

MISCELLANEOUS 

Section 3.1    Definitions. Capitalized terms used but not defined herein shall have the meanings ascribed to
them under the Chindata Shareholders Agreement. 

  
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 Section 3.2    Notices. Except as may be otherwise provided
herein, all notices, requests, waivers and other communications made pursuant to this Agreement shall be in writing to the number or address set forth in Exhibit A hereto and shall be conclusively deemed to have been duly given (a) when
hand-delivered to the other parties hereto, upon delivery; (b) when sent by facsimile or electronic mail at the number or address upon receipt of confirmation of error-free transmission or, in the case of electronic mail, upon such mail being
sent unless the sending party subsequently learns that such electronic mail was not successfully delivered; (c) seven (7) Business Days after deposit in the mail as air mail or certified mail, receipt requested, postage prepaid; or
(d) three (3) Business Days after deposit with an overnight delivery service, postage prepaid with next-business-day delivery guaranteed, provided that the sending party receives a confirmation of
delivery from the delivery service provider. A party may change or supplement the addresses given above, or designate additional addresses, for purposes of this Section 3.2, by giving the other Parties written notice of the
new address in the manner set forth above. Sections 8 and 19(3) of the Electronic Transactions Law (2003 Revision) of the Cayman Islands shall not apply to this Agreement. 

Section 3.3    Severability. If any provision of this Agreement is held to be invalid or unenforceable for any
reason, it shall be adjusted rather than voided, if possible, in order to achieve the intent of the parties to the maximum extent possible. In any event, the invalidity or unenforceability of any provision of this Agreement in any jurisdiction shall
not affect the validity or enforceability of the remainder of this Agreement in that jurisdiction or the validity or enforceability of this Agreement, including that provision, in any other jurisdiction. 

Section 3.4    Amendments; Waivers. This Agreement may not be modified, amended, altered or supplemented
except upon the execution and delivery of a written agreement executed by all of the parties hereto. Notwithstanding the foregoing, no failure or delay by a party hereto in exercising any right hereunder shall operate as a waiver thereof nor shall
any single or partial exercise thereof preclude any other or further exercise of any other right hereunder. 

Section 3.5    Governing Law; Dispute Resolution. Except as prohibited by applicable law, this Agreement and
all claims or disputes arising out of or based upon this Agreement or relating to the subject matter hereof will be governed by and construed in accordance with the laws of the Cayman Islands, without giving effect to any choice or conflict of laws
provision or rule that would cause the application of the domestic substantive laws of any other jurisdiction. Except as prohibited by applicable law, the parties hereto agree that any disputes related to this Agreement will be referred to and
finally resolved by arbitration administered by the Hong Kong International Arbitration Centre (“HKIAC”) under the UNCITRAL Arbitration Rules in force when the Notice of Arbitration is submitted, as modified by the HKIAC Procedures
for the Administration of Arbitration under the UNCITRAL Arbitration Rules and as may be amended by the rest of this clause. The place of arbitration shall be Hong Kong. The language of the arbitration shall be English. The arbitral tribunal shall
be composed of three arbitrators. The appointing authority shall be the HKIAC. The arbitral award is final and binding upon the parties and the parties waive irrevocably their right to any form of appeal, review or recourse to any state court or
other judicial authority, insofar as such waiver may validly be made. 
 Section 3.6    No Third Party
Beneficiaries. The terms of this Agreement are not intended to be enforceable by virtue of the Contracts (Rights of Third Parties) Law, 2014 by any Person who is not a party to this Agreement. Nothing in this Agreement shall be deemed to
constitute a partnership among any of the parties hereto. 

  
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 Section 3.7    Assignment; Binding Effect. Neither this
Agreement nor any of the rights, interests or obligations hereunder shall be assigned by any of the parties hereto (whether by operation of law or otherwise) without the prior written consent of the other parties. Subject to the preceding sentence,
this Agreement shall be binding upon and shall inure to the benefit of the parties hereto and their respective successors and permitted assigns. 

Section 3.8    Counterparts. This Agreement may be executed in two or more consecutive counterparts (including
by facsimile or email pdf format), each of which shall be an original, with the same effect as if the signatures thereto and hereto were upon the same instrument, and shall become effective when one or more counterparts have been signed by each of
the parties and delivered (by telecopy, email pdf format or otherwise) to the other parties. 
 [Remainder of page intentionally left
blank] 

  
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 IN WITNESS WHEREOF, the undersigned have executed this Agreement as a deed as of the
date first above written. 
 Company: 
  

			
	 
   
	 	 SIGNED AND DELIVERED as a deed
in the name of BCPE STACK ESOP

HOLDCO LIMITED

		
		 	 /s/ Zhongjue Chen

		 	Name: Zhongjue Chen
		 	Title: Director

 IN WITNESS WHEREOF, the undersigned have executed this Agreement as a deed as of the
date first above written. 
 Abiding Joy: 
  

			
	 
 

  
	 	 SIGNED AND DELIVERED as a deed

in the name of ABIDING JOY

LIMITED

		
		 	 /s/ Ju Jing

		 	Name: JU Jing
		 	Title: Director

 [Signature Page to Proxy Agreement]EX-10.11

 Exhibit 10.11 

SUBSCRIPTION AGREEMENT 

This Subscription Agreement (this “Agreement”) is made as of September 23, 2020 by and between: 

(1) Chindata Group Holdings Limited, an exempted company with limited liability incorporated under the laws of the Cayman Islands (the
“Company”); and 
 (2) JOYFUL PHOENIX LIMITED(禧鳳有限公司), a BVI business company
incorporated under the Laws of the British Virgin Islands with Company Number 2013543 (the “Purchaser”). The Purchaser on the one hand, and the Company on the other hand, are sometimes herein referred to each as a
“Party,” and collectively as the “Parties.” 
 W I T N E S
S E T H: 
 WHEREAS, the Company has filed a registration statement on Form
F-1 on September 8, 2020 (as may be amended from time to time, the “Registration Statement”) with the United States Securities and Exchange Commission (the “SEC”) in
connection with the initial public offering (the “Offering”) by the Company of American depositary shares (“ADS”) representing Class A ordinary shares of par value US$0.00001 per share, (“Ordinary
Shares”) of the Company as specified in the Registration Statement; and 
 WHEREAS, the Purchaser wishes to invest in the Company
by acquiring Ordinary Shares in the Company in a transaction exempt from registration pursuant to Regulation S (“Regulation S”) of the U.S. Securities Act of 1933, as amended (the “Securities Act”); 

NOW, THEREFORE, in consideration of the foregoing recitals and the mutual promises hereinafter set forth, the Parties hereto agree as follows:

 ARTICLE I 

PURCHASE AND SALE 

Section 1.1 Issuance, Sale and Purchase of Ordinary Shares. Upon the terms and subject to the conditions of this Agreement, the
Purchaser hereby agrees to purchase, and the Company hereby agrees to issue and sell to the Purchaser, at the Closing (as defined below), such number of Ordinary Shares that is equal to the quotient of the Purchase Price (as defined below) divided
by the Offer Price (as defined below) (the “Purchased Shares”) at a price per Ordinary Share equal to the Offer Price and for an aggregate purchase price of US$65,000,000 (the “Purchase Price”), free and clear of
all liens or encumbrances (except for restrictions arising under the Securities Act or created by virtue of this Agreement or the Lock-up Agreement (as defined below)); provided, however, that
(a) no fractional shares of Ordinary Shares will be issued as Purchased Shares, (b) any fractions shall be rounded down to the nearest whole number of Ordinary Shares, and (c) the Purchase Price will be reduced by the value of any
such fractional share (as calculated on the basis of the Offer Price). The “Offer Price” means the price per ADS set forth on the cover of the Company’s final prospectus in connection with the Offering divided by the number of
Ordinary Shares represented by one ADS. The purchase, issuance, sale and delivery of the Purchased Shares shall be made pursuant to and in reliance upon Regulation S. 

  
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 Section 1.2 Closing. 

(a) Closing. Subject to Section 1.3, the closing (the “Closing”) of the sale and purchase of
the Purchased Shares pursuant to Section 1.1 shall take place concurrently with the closing of the Offering at the same offices for the closing of the Offering or at such other place as the Company and the Purchaser may
mutually agree with respect to the Purchased Shares. The date and time of the Closing are referred to herein as the “Closing Date.” 

(b) Payment and Delivery. At the Closing, the Purchaser shall pay and deliver the Purchase Price to the Company in U.S. dollars by wire
transfer, or by such other method mutually agreeable to the Company and the Purchaser, of immediately available funds to such bank account designated in writing by the Company at least five (5) business days prior to the Closing, and the
Company shall deliver one or more duly executed share certificates in original form, registered in the name of the Purchaser, together with a copy of the extract of the register of the members of the Company, evidencing the Purchased Shares have
been issued and registered under the name of the Purchaser as of the Closing Date. 
 (c) Restrictive Legend. Each certificate
representing Purchased Shares shall be endorsed with the following legend: 
 THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT
OF 1933 (AS AMENDED, THE “ACT”) OR UNDER THE SECURITIES LAWS OF ANY STATE. THIS SECURITY MAY NOT BE TRANSFERRED, SOLD, OFFERED FOR SALE, PLEDGED OR HYPOTHECATED: (A) IN THE ABSENCE OF (1) AN EFFECTIVE REGISTRATION STATEMENT UNDER
THE ACT, (2) AN EXEMPTION OR QUALIFICATION UNDER THE ACT AND OTHER APPLICABLE SECURITIES LAWS OR (3) DELIVERY TO THE COMPANY OF AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO THE COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED; AND
(B) WITHIN THE UNITED STATES OR TO ANY U.S. PERSON, AS EACH OF THOSE TERMS IS DEFINED IN REGULATION S UNDER THE ACT, DURING THE 40 DAYS FOLLOWING CLOSING OF THE PURCHASE. ANY ATTEMPT TO TRANSFER, SELL, PLEDGE OR HYPOTHECATE THIS SECURITY IN
VIOLATION OF THESE RESTRICTIONS SHALL BE VOID. 
 Section 1.3 Closing Conditions. 

(a) Conditions to the Purchaser’s Obligations to Effect the Closing. The obligation of the Purchaser to purchase and pay for the
Purchased Shares as contemplated by this Agreement is subject to the satisfaction, on or before the Closing Date, of the following conditions, any of which may only be waived in writing by the Purchaser in its sole discretion: 

(i) all corporate and other actions required to be taken by the Company in connection with the issuance and sale of the
Purchased Shares shall have been completed. 

  
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 (ii) (x) the representations and warranties of the Company contained
in Section 2.1 shall be true and correct in all respects as of the date of this Agreement and on and as of the Closing Date (except to the extent any such representation and warranty expressly relates to an earlier date, in
which case it shall be so true and correct as of such earlier date); 
 (iii) the Company shall have performed and complied
in all material respects with all covenants contained in this Agreement that are required to be performed or complied with on or before the Closing Date; 

(iv) no governmental authority of competent jurisdiction shall have enacted, issued, promulgated or enforced any law that is
then in effect and restrains, enjoins, prevents, prohibits or otherwise makes illegal the consummation of the transactions contemplated by this Agreement; and no action, suit, proceeding or investigation shall have been instituted by a governmental
authority of competent jurisdiction that seeks to restrain, enjoin, prevent, prohibit or otherwise make illegal the consummation of the transactions contemplated by this Agreement; 

(v) the Offering shall have been, or shall concurrently with the Closing be, completed; 

(vi) the ADSs shall have been listed on the Nasdaq (as defined below); and 

(vii) the underwriting agreement relating to the Offering shall have been entered into and have become effective. 

(b) Conditions to Company’s Obligations to Effect the Closing. The obligation of the Company to issue and sell the Purchased
Shares to the Purchaser as contemplated by this Agreement is subject to the satisfaction, on or before the Closing Date, of each of the following conditions, any of which may only be waived in writing by the Company in its sole discretion: 

(i) the Lock-up Agreement shall have been executed and delivered by the Purchaser to
the representatives of the underwriters for the Offering; 
 (ii) all corporate and other actions required to be taken by
the Purchaser in connection with the purchase of the Purchased Shares shall have been completed; 
 (iii) (x) the
representations and warranties of the Purchaser contained in Section 2.2 shall be true and correct as of the Closing Date (except to the extent any such representation and warranty expressly relates to an earlier date, in
which case it shall be so true and correct as of such earlier date); 

  
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 (iv) the Purchaser shall have performed and complied in all material
respects with all covenants contained in this Agreement that are required to be performed or complied with on or before the Closing Date; and 

(v) no governmental authority of competent jurisdiction shall have enacted, issued, promulgated or enforced any law that is
then in effect and restrains, enjoins, prevents, prohibits or otherwise makes illegal the consummation of the transactions contemplated by this Agreement; and no action, suit, proceeding or investigation shall have been instituted by a governmental
authority of competent jurisdiction that seeks to restrain, enjoin, prevent, prohibit or otherwise make illegal the consummation of the transactions contemplated by this Agreement. 

ARTICLE II 

REPRESENTATIONS AND WARRANTIES 

Section 2.1 Representations and Warranties of the Company. The Company hereby represents and warrants to the Purchaser, as of the
date hereof and as of the Closing Date, as follows: 
 (a) Due Formation. The Company is a company duly incorporated as an exempted
company with limited liability, validly existing and in good standing under the laws of the Cayman Islands. The Company has all requisite power and authority to carry on its business as it is currently being conducted. 

(b) Authority. The Company has full power and authority to enter into, execute and deliver this Agreement and each agreement,
certificate, document and instrument to be executed and delivered by the Company pursuant to this Agreement and to perform its obligations hereunder. The execution and delivery by the Company of this Agreement and any agreements, certificates,
documents and instruments to be executed and delivered by the Company pursuant to this Agreement, and the performance by the Company of its obligations hereunder, have been duly authorized by all requisite actions on its part. 

(c) Valid Agreement. This Agreement has been duly executed and delivered by the Company and constitutes the legal, valid and binding
obligation of the Company, enforceable against the Company in accordance with its terms, except (i) as limited by applicable bankruptcy, insolvency, reorganization, moratorium, and other laws of general application affecting enforcement of
creditors’ rights generally, and (ii) as limited by laws relating to the availability of specific performance, injunctive relief, or other equitable remedies. 

(d) Capitalization. 

(i) The authorized share capital of the Company and the number of issued and outstanding shares of the Company (including the
Ordinary Shares), as of the date hereof, are as set forth in Schedule I to this Agreement. All issued and outstanding Ordinary Shares are validly issued, fully paid and non-assessable. 

  
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 (ii) The Purchase Shares when issued and allotted in accordance with the
terms of this Agreement will be issued and allotted in accordance with (x) all applicable Securities Laws and other applicable laws and (y) all requirements set forth in applicable plans or contracts, without violation of any preemptive
rights, rights of first refusal or other similar rights. “Securities Laws” means the Securities Act, the Securities Exchange Act of 1934, as amended, the listing rules of, or any listing agreement with the Nasdaq and any other
applicable law regulating securities or takeover matters. 
 (iii) The rights of the Ordinary Shares to be issued to the
Purchaser as Purchased Shares are as stated in the Fifth Amended and Restated Memorandum and Articles of Association of the Company as set out in Exhibit 3.2 of the Registration Statement. 

(e) Due Issuance of the Purchased Shares. The Purchased Shares have been duly authorized and, when issued to and paid for by the
Purchaser pursuant to this Agreement, will be validly issued, fully paid and non-assessable and free and clear of any pledge, mortgage, security interest, encumbrance, lien, charge, assessment, right of first
refusal, right of pre-emption, third party right or interest, claim or restriction of any kind or nature, except for restrictions arising under the Securities Act or created by virtue of this Agreement or the Lock-up Agreement or applicable laws and upon delivery and entry into the register of members of the Company will transfer to the Purchaser good and valid title to the Purchased Shares. 

(f) Noncontravention. Neither the execution and the delivery of this Agreement, nor the consummation of the transactions contemplated
hereby, will (i) violate any provision of the organizational documents of the Company or its subsidiaries or consolidated affiliates (each a “Subsidiary” and collectively “Subsidiaries”) or violate any
constitution, statute, regulation, rule, injunction, judgment, order, decree, ruling, charge, or other restriction of any government, governmental entity or court to which the Company or its Subsidiaries is subject, or (ii) conflict with,
result in a breach of, constitute a default under, result in the acceleration of or creation of an encumbrance under, or create in any party the right to accelerate, terminate, modify, or cancel, any agreement, contract, lease, license, instrument,
or other arrangement to which the Company or its Subsidiaries is a party or by which the Company or its Subsidiaries is bound or to which any of the Company’s or its Subsidiaries’ assets are subject, in each case, except as would not
materially and adversely affect the Company’s ability to consummate the transactions contemplated hereunder. There is no action, suit or proceeding, pending or, to the Company’s knowledge, threatened against the Company that questions the
validity of this Agreement or the right of the Company to enter into this Agreement or to consummate the transactions contemplated hereby. 

  
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 (g) Consents and Approvals. Neither the execution and delivery by the Company of
this Agreement, nor the consummation by the Company of any of the transactions contemplated hereby, nor the performance by the Company of this Agreement in accordance with its terms requires the consent, approval, order or authorization of, or
registration with, or the giving notice to, any governmental or public body or authority or any third party, except such as have been or will have been obtained, made or given on or prior to the Closing Date. 

(h) SEC Filings. Prior to the Closing, the Registration Statement, as supplemented or amended, shall have been declared effective by
the SEC. The Registration Statement, including the prospectus therein, conforms and will conform, in all material respects to the requirements of the Securities Act and the rules and regulations of the SEC thereunder and will not, as of the
applicable effective date, contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading. 

(i) Investment Company. The Company is not and, after giving effect to the offering and sale of the Purchased Shares, the
consummation of the Offering and the application of the proceeds hereof thereof, will not be an “investment company,” as such term is defined in the U.S. Investment Company Act of 1940, as amended. 

(j) Regulation S. No directed selling efforts (as defined in Rule 902 of Regulation S under the Securities Act) have been made by any
of the Company, any of its affiliates or any person acting on its behalf with respect to the Purchased Shares that are not registered under the Securities Act; and none of such persons has taken any actions that would result in the sale of the
Purchased Shares to the Purchaser under this Agreement requiring registration under the Securities Act; and the Company is a “foreign issuer” (as defined in Regulation S). 

(k) Litigation. Except as disclosed in the Registration Statement filed by the Company with the SEC prior to the date of this Agreement
or the Closing Date, as the case may be, there are no actions by or against the Company or its Subsidiaries or affecting the business or any of the assets of the Company or its Subsidiaries pending before any governmental authority, or, to the
Company’s knowledge, threatened to be brought by or before any governmental authority, that has had or would reasonably be expected to have a Material Adverse Effect. 

(l) No Other Representations or Warranties. Except for the representations and warranties contained in this
Section 2.1, the Company does not make any express or implied representation or warranty, and the Purchaser hereby disclaims any such representation and warranty, in connection with this Agreement or the transactions
contemplated hereunder. 
 Section 2.2 Representations and Warranties of the Purchaser. The Purchaser hereby represents and
warrants to the Company as of the date hereof as follows: 
 (a) Due Formation. The Purchaser is duly formed, validly existing and in
good standing in the jurisdiction of its organization. The Purchaser has all requisite power and authority to carry on its business as it is currently being conducted. 

(b) Authority. The Purchaser has full power and authority to enter into, execute and deliver this Agreement and each agreement,
certificate, document and instrument to be executed and delivered by the Purchaser pursuant to this Agreement and to perform its obligations hereunder. The execution and delivery by the Purchaser of this Agreement and any agreements, certificates,
documents and instruments to be executed and delivered by the Purchaser pursuant to this Agreement, and the performance by the Purchaser of its obligations hereunder have been duly authorized by all requisite actions on its part. 

  
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 (c) Valid Agreement. This Agreement has been duly executed and delivered by the
Purchaser and constitutes the legal, valid and binding obligation of the Purchaser, enforceable against the Purchaser in accordance with its terms, except (i) as limited by applicable bankruptcy, insolvency, reorganization, moratorium, and
other laws of general application affecting enforcement of creditors’ rights generally, and (ii) as limited by laws relating to the availability of specific performance, injunctive relief, or other equitable remedies. 

(d) Noncontravention. Neither the execution and the delivery of this Agreement, nor the consummation of the transactions contemplated
hereby, will (i) violate any provision of the organizational documents of the Purchaser or violate any constitution, statute, regulation, rule, injunction, judgment, order, decree, ruling, charge, or other restriction of any government,
governmental entity or court to which the Purchaser is subject, or (ii) conflict with, result in a breach of, constitute a default under, result in the acceleration of or creation of an encumbrance under, or create in any party the right to
accelerate, terminate, modify, or cancel, any agreement, contract, lease, license, instrument, or other arrangement to which the Purchaser is a party or by which the Purchaser is bound or to which any of the Purchaser’s assets are subject,
except as would not materially and adversely affect the Purchaser’s ability to consummate the transactions contemplated hereunder. There is no action, suit or proceeding, pending or, to the Purchaser’s knowledge, threatened against the
Purchaser that questions the validity of this Agreement or the right of the Purchaser to enter into this Agreement or to consummate the transactions contemplated hereby. 

(e) Consents and Approvals. Neither the execution and delivery by the Purchaser of this Agreement, nor the consummation by the
Purchaser of any of the transactions contemplated hereby, nor the performance by the Purchaser of this Agreement in accordance with its terms requires the consent, approval, order or authorization of, or registration with, or the giving notice to,
any governmental or public body or authority or any third party, except such as have been or will have been obtained, made or given on or prior to the Closing Date. 

(f) Status and Investment Intent. 

(i) Experience. The Purchaser has sufficient knowledge and experience in financial and business matters so as to be
capable of evaluating the merits and risks of its investment in the Purchased Shares. The Purchaser is capable of bearing the economic risks of such investment, including a complete loss of its investment. 

(ii) Purchase Entirely for Own Account. The Purchaser is acquiring the Purchased Shares for its own account for
investment purposes only and not with the view to, or with any intention of, resale, distribution or other disposition thereof. The Purchaser does not have any direct or indirect arrangement, or understanding with any other persons to distribute, or
regarding the distribution of the Purchased Shares in violation of the Securities Act or any other applicable state securities law. 

  
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 (iii) Solicitation. The Purchaser (x) was not identified or
contacted through the marketing of the Offering and (y) did not contact the Company as a result of any general solicitation or directed selling efforts in the United States. 

(iv) Information. The Purchaser has been furnished access to all materials and information the Purchaser has requested
relating to the Company and its Subsidiaries and other due diligence documents in order to evaluate the transactions contemplated by this Agreement. The Purchaser has consulted to the extent deemed appropriate by the Purchaser with the
Purchaser’s own advisers as to the financial, tax, legal and related matters concerning an investment in the Purchased Shares. 

(v) Not U.S. Person. The Purchaser is not a “U.S. person” as defined in Rule 902 of Regulation S. 

(vi) Offshore Transaction. The Purchaser has been advised and acknowledges that in issuing the Purchased Shares to the
Purchaser pursuant hereto, the Company is relying upon the exemption from registration provided by Regulation S. The Purchaser is acquiring the Purchased Shares in an offshore transaction in reliance upon the exemption from registration provided by
Regulation S. 
 (vii) FINRA. The Purchaser does not, directly or indirectly, own more than five per cent of the
outstanding common stock (or other voting securities) of any member of the Financial Industry Regulatory Authority, Inc. (“FINRA”) or a holding company for a FINRA member, and is not otherwise a “restricted person” for the
purposes of the Free-Riding and Withholding Interpretation of FINRA. 
 (g) No Other Representations or Warranties. Except for the
representations and warranties contained in this Section 2.2, the Purchaser does not make any express or implied representation or warranty, and the Company hereby disclaims any such representation and warranty, in
connection with this Agreement or the transactions contemplated hereunder. 
 ARTICLE III 

COVENANTS 

Section 3.1 Lock-up. The Purchaser shall, concurrently with the execution of this
Agreement, enter into a lock-up agreement (the “Lock-up Agreement ”) in the form attached hereto as Exhibit A. 

  
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 Section 3.2 Distribution Compliance Period. The Purchaser agrees not to resell,
pledge or transfer any Purchased Shares within the United States or to any U.S. Person, as each of those terms is defined in Regulation S, during the 40 days following the Closing Date. 

Section 3.3 Further Assurances. From the date of this Agreement until the Closing Date, the Company and the Purchaser shall use
their reasonable best efforts to fulfill or obtain the fulfillment of the conditions precedent to the consummation of the transactions contemplated hereby. 

ARTICLE IV 

INDEMNIFICATION 

Section 4.1 Indemnification by the Company. The Company hereby agrees to, from and after the Closing and subject to
the limitations set forth in this Article IV, indemnify and hold harmless the Purchaser and its successors and their respective directors, officers, representatives and agents (each, a “Purchaser Indemnified Party”) from and against
any and all Indemnifiable Losses suffered by such Purchaser Indemnified Party as a result of any breach of or inaccuracy in any representation or warranty made by the Company in this Agreement or any breach of any covenant, agreement or obligation
of the Company contained in this Agreement. 
 Section 4.2 Indemnification by the Purchaser. The Purchaser hereby agrees to,
from and after the Closing and subject to the limitations set forth in this Article IV, indemnify and hold harmless the Company and its successors (each, a “Company Indemnified Party”) from and against any and all
Indemnifiable Losses suffered by such Company Indemnified Party as a result of any breach of or inaccuracy in any representation or warranty made by the Purchaser in this Agreement or any breach of any covenant, agreement or obligation of the
Purchaser contained in this Agreement. 
 Section 4.3 Limitations. 

(a) The maximum aggregate liability of each applicable Indemnifying Party to its corresponding Indemnified Party under
Section 4.1 or Section 4.2 (as the case may be) shall not exceed 100% of the Purchase Price actually paid by the Purchaser at the Closing (such cap in (i) or (ii), the applicable
“Indemnity Cap”). 
 (b) Notwithstanding anything to the contrary in this Section 4.3, none of
the limitations on liability in this Section 4.3 shall limit any Indemnifying Party’s liability in the event of fraud on the part of such Indemnifying Party. 

Section 4.4 Exclusive Remedy. From and after the Closing and notwithstanding anything to the contrary in this Agreement (but
without prejudice to Section 5.11), the indemnification provisions set forth in this Article IV shall be the sole and exclusive monetary remedy of any of the parties hereto (or any other applicable Indemnified Party)
against any other party hereto in respect of the claims or matters under this Agreement (other than a claim for specific performance under Section 5.11). 

  
 9 

 Section 4.5 Procedures. Any Indemnified Party seeking indemnification under this
Article IV shall give written notice (a “Claim Notice”) to its corresponding Indemnifying Party. The Claim Notice shall include a description in reasonable detail of (a) the basis for, and nature of, such claim,
including the facts constituting the basis for such claim, and (b) the estimated amount of Indemnifiable Losses that have been or reasonably will be sustained by the Indemnified Party in connection with such claim. In the event of any claim,
demand, action or proceeding asserted against any Indemnified Party by a third party with respect to which such Indemnified Party may claim indemnification under Section 4.1 or Section 4.2, as the
case may be (a “Third Party Claim”), such Indemnified Party shall give the applicable Indemnifying Party written notice within ten (10) days of receiving written notice of such Third Party Claim. If such Indemnified Party fails
to provide each such notice with respect to Third Party Claim within such time period, the applicable Indemnifying Party will not be obligated to indemnify such Indemnified Party with respect to such Third Party Claim to the extent that the
applicable Indemnifying Party is prejudiced by such failure of the Indemnified Party. The Indemnifying Party shall notify such Indemnified Party within thirty (30) days after receipt of such notice as to whether the Indemnifying Party will
assume the defense of such Third Party Claim. If the Indemnifying Party assumes the defense of such Third Party Claim, (i) the Indemnified Party shall have the right to participate in such defense and to engage separate counsel of its own
choosing at its own cost and expense and (ii) the Indemnifying Party shall not agree to any compromise or settlement to which such Indemnified Party has not consented to in writing (which consent shall not be unreasonably withheld, conditioned
or delayed) unless such settlement or compromise includes only the payment of monetary damages which shall be paid by such Indemnifying Party (subject to the limitations herein) and includes a release of such Indemnified Party from all liability in
respect of such Third Party Claim. If requested by the Indemnifying Party, such Indemnified Party will, at the cost and expense of such Indemnifying Party (which cost and expense shall be deemed Indemnifiable Losses for purposes of applying the
applicable Indemnity Cap), provide reasonable cooperation to the Indemnifying Party in defending such Third Party Claim. If the Indemnifying Party elects not to assume the defense of such Third Party Claim, the Indemnified Party may assume the
defense thereof at the expense of the Indemnifying Party, provided that the Indemnified Party shall not agree to any compromise or settlement to which the Indemnifying Party has not consented in writing (which consent shall not be
unreasonably withheld, conditioned or delayed). 
 ARTICLE V 

MISCELLANEOUS 

Section 5.1 Survival of the Representations and Warranties. All representations and warranties made by any Party hereto shall
survive for two years and shall terminate and be without further force or effect on the second anniversary of the date hereof, except as to (i) any claims thereunder which have been asserted in writing pursuant to
Section 4.1 or Section 4.2 against the Party making such representations and warranties on or prior to such second anniversary, and (ii) the Company Fundamental Warranties and the Purchaser
Fundamental Warranties, each of which shall survive for four (4) years, or until the expiration of the applicable statute of limitations, whichever is longer. 

  
 10 

 Section 5.2 Governing Law; Arbitration. This Agreement shall be governed and
interpreted in accordance with the laws of the State of New York without giving effect to the conflicts of law principles thereof. Any dispute arising out of or relating to this Agreement, including any question regarding its existence, validity or
termination (“Dispute”) shall be referred to and finally resolved by arbitration at the Hong Kong International Arbitration Centre in accordance with the Hong Kong International Arbitration Centre Administered Arbitration Rules then
in force. There shall be three arbitrators. Each Party has the right to appoint one arbitrator and the third arbitrator shall be appointed by the Hong Kong International Arbitration Centre. The language to be used in the arbitration proceedings
shall be English. The seat of arbitration shall be Hong Kong. Each of the Parties irrevocably waives any immunity to jurisdiction to which it may be entitled or become entitled (including without limitation sovereign immunity, immunity to pre-award attachment, post-award attachment or otherwise) in any arbitration proceedings and/or enforcement proceedings against it arising out of or based on this Agreement or the transactions contemplated hereby.
The arbitral award shall be final and binding upon all parties. 
 Section 5.3 Amendment. This Agreement shall not be amended,
changed or modified, except by another agreement in writing executed by the parties hereto. 
 Section 5.4 Binding Effect. This
Agreement shall inure to the benefit of, and be binding upon, the Purchaser, the Company, and their respective heirs, successors and permitted assigns. 

Section 5.5 Assignment. Neither this Agreement nor any of the rights, duties or obligations hereunder may be assigned by the
Company or the Purchaser without the express written consent of the other Party, except that the Purchaser may assign all or any part of its rights and obligations hereunder to any affiliate of the Purchaser without the consent of the Company,
provided that no such assignment shall relieve the Purchaser of its obligations hereunder if such assignee does not perform such obligations. Any purported assignment in violation of the foregoing sentence shall be null and void. 

Section 5.6 Notices. All notices, requests, demands, and other communications under this Agreement shall be in writing and shall
be deemed to have been duly given on the date of actual delivery if delivered personally to the Party hereto to whom notice is to be given, on the date sent if sent by telecopier, tested telex or prepaid telegram, on the next business day following
delivery to Federal Express properly addressed or on the day of attempted delivery by the U.S. Postal Service if mailed by registered or certified mail, return receipt requested, postage paid, and properly addressed as follows: 

 

			
	If to the Company, at:	  	中国北京市朝阳区来广营东路
		  	中国电科太极信息技术产业基地B座一层
		  	Tel: + 86 185 1170 6633
		  	 Attn: Zhang Zhuo (张卓)
 Email:
zhuo.zhang@chindatagroup.com

		
	with a copy to (which shall not constitute notice)	  	Bain Capital Private Equity (Asia), LLC
		
		  	Suite 2501, Level 25, One Pacific Place,
		  	88 Queensway, Admiralty
		  	Hong Kong
		  	 Attention: Drew Chen
 Email:
dchen@baincapital.com
 Fax: +852-3656-6801

  
 11 

			
	If to the Purchaser, at:	  	JOYFUL PHOENIX LIMITED (禧鳳有限公司)
		  	 Suite 1702, 17/F., Dina House, Ruttonjee Centre

11 Duddell Street, Central, Hong Kong
 Attn: Jie Luo

Fax: +852 2782 2262

E-mail: rogerluo@countrygarden.com.cn

 Any Party hereto may change its address for purposes of this Section 5.6 by giving
the other Party written notice of the new address in the manner set forth above. 
 Section 5.7 Entire Agreement. This Agreement
together with the Lock-up Agreement constitute the entire understanding and agreement between the Parties with respect to the matters covered hereby, and all prior agreements and understandings, oral or in
writing, if any, between the Parties with respect to the matters covered hereby are merged and superseded by this such agreements. 

Section 5.8 Severability. If any provisions of this Agreement shall be adjudicated to be illegal, invalid or unenforceable in any
action or proceeding whether in its entirety or in any portion, then such provision shall be deemed amended, if possible, or deleted, as the case may be, from the Agreement in order to render the remainder of the Agreement and any provision thereof
both valid and enforceable, and all other provisions hereof shall be given effect separately therefrom and shall not be affected thereby. 

Section 5.9 Fees and Expenses. Except as otherwise provided in this Agreement, the Company and the Purchaser will bear their
respective expenses incurred in connection with the negotiation, preparation and execution of this Agreement and the transactions contemplated hereby, including fees and expenses of attorneys, accountants, consultants and financial advisors. 

Section 5.10 Confidentiality. Each Party hereto shall keep in confidence, and shall not use (except for the purposes of the
transactions contemplated hereby) or disclose, any non-public information disclosed to it or its affiliates, representatives or agents in connection with this Agreement or the transactions contemplated hereby.
Each Party hereto shall ensure that its affiliates, representatives and agents keep in confidence, and do not use (except for the purposes of the transactions contemplated hereby) or disclose, any such
non-public information. 
 Section 5.11 Specific Performance. The Parties agree that
irreparable damage would occur in the event any provision of this Agreement were not performed in accordance with the terms hereof and that the Parties shall be entitled to specific performance of the terms hereof, in addition to any other remedy at
law or equity. 

  
 12 

 Section 5.12 Termination. In the event that the Closing shall not have occurred
by October 31, 2020, this Agreement shall be terminated with no further force or effect, except for the provisions of Section 5.10, which shall survive any termination under this Section 5.12. 

Section 5.13 Description of the Purchaser. 

(a) The Purchaser hereby consents and undertakes to promptly provide a description of its organization and business activities to the Company
(the “Purchaser Description”) to be used solely in the Registration Statement and the prospectus therein, and hereby represents that the Purchaser Description will be true and accurate in all material respects and will not be
misleading in any material respect. The Company shall afford the Purchaser a reasonable opportunity in which to review and comment on any description of the Purchaser and/or the transactions contemplated by this Agreement that is to be included in
the Registration Statement filed after the date hereof. 
 (b) The Purchaser hereby agrees and consents to the use of and references to its
name, the inclusion of Purchaser Description, the disclosure of the transactions contemplated under this Agreement and the filing of this Agreement as an exhibit to the Registration Statement and other SEC filings, marketing materials and other
publicity materials in connection with the Offering (subject to the Purchaser’s reasonable opportunity to review and comment on such press release and marketing materials as applicable). 

(c) The Purchaser acknowledges that the Company will rely upon the truth and accuracy of the Purchaser Description, and the Purchaser agrees
to notify the Company promptly in writing if any of the content contained therein ceases to be accurate and complete or becomes misleading. 

Section 5.14 Headings. The headings of the various articles and sections of this Agreement are inserted merely for the purpose of
convenience and do not expressly or by implication limit, define or extend the specific terms of the section so designated. 

Section 5.15 Execution in Counterparts. For the convenience of the Parties and to facilitate execution, this Agreement may be
executed in one or more counterparts, each of which shall be deemed to be an original, but all of which together shall constitute but one and the same instrument. 

Section 5.16 Certain Definitions. For purposes of this Agreement, the following defined terms shall have the following meanings:

 (a) “Company Fundamental Warranties” means, collectively, the representations and warranties of the Company in
Section 2.1(a) (Due Formation), Section 2.2(b) (Authority), Section 2.1(c) (Valid Agreement), Section 2.1(d)
(Capitalization) and Section 2.1(e) (Valid Issuance of the Purchased Shares). 
 (b) “COVID-19” means the pandemic known as COVID-19, any mutation or evolution thereto and any associated or related epidemic, pandemic or disease outbreak. 

  
 13 

 (c) “Indemnifiable Loss” means, with respect to any person, any cost,
damage, disbursement, expense, liability, loss or penalty (and in any event excluding any loss of profits or other consequential, indirect, exemplary, speculative or punitive damages), together with all reasonable interest, penalties, legal,
accounting and other professional fees and expenses incurred in the investigation, collection, prosecution and defense of claims therefor and amounts paid in settlement thereof, that are actually imposed on or otherwise actually and reasonably
incurred or suffered by such person. 
 (d) “Indemnified Party” means (in the case of indemnification provided by the
Purchaser) the Company Indemnified Party or (in the case of indemnification provided by the Company) the Purchaser Indemnified Party. 
 (e)
“Indemnifying Party” means the Company (in the case of a claim for indemnification by a Purchaser Indemnified Party) or the Purchaser (in the case of a claim for indemnification by a Company Indemnified Party). 

(f) “Material Adverse Effect” means a material adverse effect on (x) the business, financial condition, assets or
results of operations of the Company and its Subsidiaries, taken as a whole or (y) the ability of the Company to consummate the transactions contemplated hereunder; provided, however, that in no event shall any of the following
exceptions, alone or in combination with the other enumerated exceptions below, be deemed to constitute, nor shall be taken into account in determining whether there has been or will be, a Material Adverse Effect: (a) any change or effect
arising out of compliance with the terms and conditions of, or from the announcement of the transactions contemplated by, this Agreement; (b) any change or effect arising out of actions taken (or omitted to be taken) at the written request of
or with the written consent of the Purchaser; (c) any change or effect arising out of changes or developments generally affecting any of the industries in which the Company and its Subsidiaries operate or generally affecting the economic,
financial market or political conditions in one or more jurisdictions in which the Company and its Subsidiaries operate or generate revenues (other than to the extent such changes materially and disproportionately adversely affect the Company and
its Subsidiaries, taken as a whole, by comparison to other similarly situated participants in the industries or markets in which they operate); (d) any changes in applicable Laws or the interpretation or enforcement thereof or in applicable
accounting principles or the interpretation thereof; (e) any epidemic, pandemic or disease outbreak (including COVID-19), or any law, regulation, statute, directive, pronouncement or guideline issued by a
Governmental Authority, the Centers for Disease Control and Prevention, the World Health Organization or industry group providing for business closures,
“sheltering-in-place” or other restrictions that relate to, or arise out of, an epidemic, pandemic or disease outbreak (including COVID-19) or any change in such law, regulation, statute, directive, pronouncement or guideline or interpretation thereof following the date of this Agreement; (f) any earthquake, typhoon, other natural
disasters, any outbreak or escalation of hostilities of war or any act of terrorism; (g) any failure to meet any internal projections or forecasts; or (h) any matter disclosed in the Registration Statement filed by the Company with the SEC
prior to the date of this Agreement or the Closing Date, as the case may be. 
 (g) “Nasdaq” means the NASDAQ Global Select
Market. 

  
 14 

 (h) “Purchaser Fundamental Warranties” means, collectively, the
representations and warranties of the Company in Section 2.2(a) (Due Formation), Section 2.2(b) (Authority) and Section 2.2(c) (Valid Agreement). 

[signature pages follow] 

  
 15 

 IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed as of the
day and year first above written. 
  

			
	Chindata Group Holdings Limited
		
	By:	 	 /s/ Jing Ju

	Name: Jing Ju
	Title:   Director
		
	By:	 	 /s/ Zhongjue Chen

	Name: Zhongjue Chen
	Title:   Director

 [Signature Page to the Subscription Agreement] 

 IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed as of the
day and year first above written. 
  

			
	JOYFUL PHOENIX LIMITED 禧鳳有限公司
		
	By:	 	 /s/ LUO JIE

	Name: LUO JIE
	Title:   Director

 [Signature Page to the Subscription Agreement]

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