Document:

EX-10.3

 Exhibit 10.3 

EXECUTION VERSION 

PLEDGE AND SECURITY AGREEMENT 

PLEDGE AND SECURITY AGREEMENT, dated as of January 16, 2018 (this “Agreement”), made by comScore, Inc., a
Delaware corporation (the “Company”), each Subsidiary of the Company listed as a “Grantor” on the signature pages hereto (together with the Company and each other Person that executes an joinder and becomes a
“Grantor” hereunder, each a “Grantor” and collectively, the “Grantors”), in favor of Starboard Value and Opportunity Master Fund Ltd., in its capacity as collateral agent (in such capacity, the
“Collateral Agent”) for the Holders (as defined below) of Notes (as defined below) issued pursuant to the Securities Purchase Agreement, dated as of January 16, 2018 (as amended, restated or otherwise modified from time to
time, the “Securities Purchase Agreement”). 
 W I T N E S S E
T H: 
 WHEREAS, the Company and each party listed as a “Buyer” on the Schedule of Buyers (each a
“Buyer” and collectively, the “Buyers”) attached to the Securities Purchase Agreement (as such schedule may be amended, restated or otherwise modified from time to time) are parties to the Securities Purchase
Agreement, pursuant to which the Company shall be required to sell, and the Buyers shall purchase or have the right to purchase, the “Notes” (as defined in the Securities Purchase Agreement); 

WHEREAS, it is a condition precedent to the Buyers consummating the transactions contemplated by the Securities Purchase Agreement that the
Grantors execute and deliver to the Collateral Agent this Agreement providing for the grant to the Collateral Agent for the benefit of the Holders (as defined below) of a security interest in the Collateral (as defined below) to secure all of the
Company’s obligations under the Securities Purchase Agreement and the “Notes” (as defined therein) issued pursuant thereto (as such Notes may be amended, restated, replaced or otherwise modified from time to time in accordance with
the terms thereof, collectively, the “Notes”) and the other Transaction Documents (as defined in the Securities Purchase Agreement); 

WHEREAS, the Grantors (i) are mutually dependent on each other in the conduct of their respective businesses as an integrated operation,
with the credit needed from time to time by one often being provided through financing obtained by the other Grantors and the ability to obtain such financing being dependent on the successful operations of the Grantors and (ii) will receive a
mutual benefit from the proceeds received by the Company in respect of the issuance of the Notes; and 
 WHEREAS, each Grantor has
determined that the execution, delivery and performance of this Agreement directly benefits, and are in the best interest of the Company and such Grantor. 

NOW, THEREFORE, in consideration of the premises and the agreements herein and in order to induce the Holders (as defined below) to perform
under the Securities Purchase Agreement, each Grantor agrees with the Collateral Agent, for the benefit of the Holders (as defined below), as follows: 

 SECTION 1. Definitions. 

(a) Reference is hereby made to the Securities Purchase Agreement and the Notes for a statement of the terms thereof. All terms used in this
Agreement and the recitals hereto which are defined in the Securities Purchase Agreement, the Notes or in Articles 8 or 9 of the Uniform Commercial Code (the “Code”) as in effect from time to time in the State of New York, and which
are not otherwise defined herein shall have the same meanings herein as set forth therein; provided that terms used herein which are defined in the Code as in effect in the State of New York on the date hereof shall continue to have the same
meaning notwithstanding any replacement or amendment of such statute except as the Collateral Agent may otherwise determine. 
 (b) The
following terms shall have the respective meanings provided for in the Code: “Accounts”, “Cash Proceeds”, “Chattel Paper”, “Commercial Tort Claim”, “Commodity Account”, “Commodity
Contracts”, “Deposit Account”, “Documents”, “Equipment”, “Fixtures”, “General Intangibles”, “Goods”, “Instruments”, “Inventory”, “Investment Property”, “Letter-of-Credit Rights”, “Noncash Proceeds”, “Payment Intangibles”, “Proceeds”, “Promissory Notes”, “Security”,
“Record”, “Security Account”, “Software”, and “Supporting Obligations”. 
 (c) As used in this
Agreement, the following terms shall have the respective meanings indicated below, such meanings to be applicable equally to both the singular and plural forms of such terms: 

“Collateral” shall have the meaning set forth in Section 2 hereof. 

“Copyright Licenses” means all licenses, contracts or other agreements, whether written or oral, naming any Grantor as
licensee or licensor and providing for the grant of any right to use or sell any works covered by any copyright (including, without limitation, all Copyright Licenses set forth in Schedule II hereto). 

“Copyrights” means all domestic and foreign copyrights, whether registered or not, including, without limitation, all
copyright rights throughout the universe (whether now or hereafter arising) in any and all media (whether now or hereafter developed), in and to all original works of authorship fixed in any tangible medium of expression, acquired or used by any
Grantor (including, without limitation, all copyrights described in Schedule II hereto), all applications, registrations and recordings thereof (including, without limitation, applications, registrations and recordings in the United States
Copyright Office or in any similar office or agency of the United States or any other country or any political subdivision thereof), and all reissues, divisions, continuations, continuations in part and extensions or renewals thereof. 

“Event of Default” shall have the meaning set forth in the Notes. 

“Excluded Assets” means (i) any leasehold interest in real property (it being understood that no action shall be
required with respect to creation or perfection of security interests with respect to such leases, including to obtain landlord waivers, estoppels or collateral access letters), (ii) motor vehicles and other assets subject to certificates of title
to the extent a Lien thereon cannot be perfected by the filing of a UCC financing statement, (iii) letter of credit 

  
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rights, to the extent a Lien thereon cannot be perfected by the filing of a UCC financing statement, and commercial tort claims to the extent having a value of less than $1,000,000, (iv) assets
for which a pledge thereof or a security interest therein is prohibited by applicable laws, (v) margin stock, (vi) any lease, license or other agreements, or any property subject to a purchase money security interest, Capital Lease
Obligation or similar arrangements, to the extent that a pledge thereof or a security interest therein would violate or invalidate such lease, license or agreement, purchase money, Capital Lease Obligation or similar arrangement, or create a right
of termination in favor of any other party thereto after giving effect to the applicable anti-assignment clauses of the Uniform Commercial Code and applicable laws, other than the proceeds and receivables thereof the assignment of which is expressly
deemed effective under applicable laws notwithstanding such prohibition, (vii) assets for which a pledge thereof or a security interest therein would result in a material adverse tax consequence as reasonably determined by the Company and the
Collateral Agent, (viii) assets for which the Collateral Agent and the Company have determined in their reasonable judgment and agree in writing that the cost of creating or perfecting such pledges or security interests therein would be
excessive in view of the benefits to be obtained by the Holders therefrom, (ix) any intent-to-use trademark application in the United States prior to the filing of
a “Statement of Use” or “Amendment to Allege Use” with respect thereto, to the extent, if any, that, and solely during the period, if any, in which, the grant, attachment, or enforcement of a security interest therein would
impair the validity or enforceability of such intent-to-use trademark application under applicable federal law, (x) Excluded Deposit Accounts, and
(xi) Excluded Equity. 
 “Excluded Deposit Accounts” means (i) Deposit Accounts the balance of which consists
exclusively of (A) withheld income taxes, employment taxes or payroll taxes in such amounts as are required in the reasonable judgment of the Grantors to be paid to the applicable governmental agencies with respect to current or former
employees of any one or more of the Grantors and (B) amounts required by applicable law to be paid over to an employee benefit plan or similar employee benefit arrangement on behalf of or for the benefit of employees of one or more of the
Grantors, (ii) all segregated Deposit Accounts constituting tax accounts and payroll accounts, (iii) any Deposit Account that is automatically swept on a daily basis into another Deposit Account that is subject to a control agreement in
favor of the Collateral Agent; (iv) any Deposit Account containing solely fiduciary funds held in trust for the benefit of third parties (other than a Grantor or any Affiliate) and (v) any Deposit Account that is subject to a Lien in favor
of a third party to the extent constituting a Permitted Lien. 
 “Excluded Equity” means capital stock or other equity
interests of (i) any foreign Subsidiary or any direct or indirect domestic Subsidiary the primary assets of which are capital stock or other equity interests and/or Indebtedness of one or more foreign Subsidiaries and/or other Subsidiaries
otherwise described in this clause, in each case of the Company or another Grantor, in excess of 65% of the issued and outstanding voting capital stock or other equity interests of each such foreign Subsidiary or domestic Subsidiary; provided that
immediately upon the amendment of the Internal Revenue Code to allow the pledge of a greater percentage of the voting power of capital stock in each such foreign Subsidiary or domestic Subsidiary without adverse tax consequences, the Collateral
shall include, and the security interest granted by the Grantors shall attach to, such greater percentage of capital stock of each such foreign Subsidiary or domestic Subsidiary and the assets of each such foreign Subsidiary or domestic Subsidiary,
(ii) any Subsidiary acquired pursuant to an acquisition or other investment to the extent any 

  
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secured Indebtedness assumed in connection with such investment (but not incurred in contemplation of such acquisition or other investment) prohibits the grant of security interest over the
capital stock or other equity interests of such Subsidiary, (iii) any Subsidiary with respect to which the Collateral Agent and the Company have determined in their reasonable judgment and agreed in writing that the costs of providing a pledge
of such capital stock or other equity interests or perfection thereof is excessive in view of the benefits to be obtained by the Holders therefrom, (iv) any captive insurance companies, not-for-profit Subsidiaries and special purpose entities, in each case to the extent the pledge thereof is prohibited by the terms of any applicable organization documents or by applicable laws and
(v) any non-wholly-owned Subsidiary to the extent the grant of a security interest in which would require the consent of one or more third parties (other than the Company and its Subsidiaries) or is
prohibited by the terms of any applicable organization documents, joint venture agreements or shareholders’ agreements. 

“Existing Issuer” has the meaning specified therefor in the definition of the term “Pledged Shares”. 

“Guaranty” means, individually and collectively, one or more guaranty agreements made by a Grantor in favor of the Holders
and the Collateral Agent, as such agreement may be amended, restated, supplemented or otherwise modified from time to time. 

“Holder” means each holder of any of the Securities (as defined in the Securities Purchase Agreement), together with their
respective successors and assigns. 
 “Insolvency Proceeding” means any proceeding commenced by or against any Person under
any provision of the Bankruptcy Code (Chapter 11 of Title 11 of the United States Code) or under any other bankruptcy or insolvency law, assignments for the benefit of creditors, formal or informal moratoria, compositions, or extensions
generally with creditors, or proceedings seeking reorganization, arrangement, or other similar relief. 
 “Intellectual
Property” means the Copyrights, Trademarks and Patents. 
 “Licenses” means the Copyright Licenses, the Trademark
Licenses and the Patent Licenses. 
 “Lien” means any mortgage, deed of trust, pledge, lien (statutory or otherwise),
security interest, charge or other encumbrance or security or preferential arrangement of any nature, including, without limitation, any conditional sale or title retention arrangement, any capitalized lease and any assignment, deposit arrangement
or financing lease intended as, or having the effect of, security. 
 “Obligations” shall have the meaning set forth in
Section 3 hereof. 
 “Patent Licenses” means all licenses, contracts or other agreements, whether
written or oral, naming any Grantor as licensee or licensor and providing for the grant of any right to manufacture, use or sell any invention covered by any Patent (including, without limitation, all Patent Licenses set forth in Schedule II
hereto). 

  
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 “Patents” means all domestic and foreign letters patent, design patents, utility
patents, industrial designs, inventions, trade secrets, ideas, concepts, methods, techniques, processes, proprietary information, technology, know-how, formulae, rights of publicity and other general
intangibles of like nature, of any Grantor, now existing or hereafter acquired (including, without limitation, all domestic and foreign letters patent, design patents, utility patents, industrial designs, inventions, trade secrets, ideas, concepts,
methods, techniques, processes, proprietary information, technology, know-how and formulae described in Schedule II hereto), all applications, registrations and recordings thereof (including, without
limitation, applications, registrations and recordings in the United States Patent and Trademark Office, or in any similar office or agency of the United States or any other country or any political subdivision thereof), and all reissues, divisions,
continuations, continuations in part and extensions or renewals thereof. 
 “Permitted Liens” shall have the meaning set
forth in the Notes. 
 “Pledged Debt” means the indebtedness described in Schedule VII hereto and all indebtedness from
time to time owned or acquired by a Grantor, the promissory notes and other Instruments evidencing any or all of such indebtedness, and all interest, cash, Instruments, Investment Property, financial assets, securities, capital stock, other equity
interests, stock options and commodity contracts, notes, debentures, bonds, promissory notes or other evidences of indebtedness and all other property from time to time received, receivable or otherwise distributed in respect of or in exchange for
any or all of such indebtedness; provided that in no event shall the Pledged Debt include any Excluded Assets. 
 “Pledged
Interests” means, collectively, (a) the Pledged Debt, (b) the Pledged Shares and (c) all security entitlements in any and all of the foregoing. 

“Pledged Issuer” has the meaning specified therefor in the definition of the term “Pledged Shares”. 

“Pledged Shares” means (a) the shares of capital stock or other equity interests described in Schedule VIII hereto,
whether or not evidenced or represented by any stock certificate, certificated security or other Instrument, issued by the Persons described in such Schedule VIII (the “Existing Issuers”), (b) the shares of capital stock or other
equity interests at any time and from time to time acquired by a Grantor of any and all Persons now or hereafter existing (such Persons, together with the Existing Issuers, being hereinafter referred to collectively as the “Pledged
Issuers” and each individually as a “Pledged Issuer”), whether or not evidenced or represented by any stock certificate, certificated security or other Instrument, and (c) the certificates representing such shares of
capital stock, all options and other rights, contractual or otherwise, in respect thereof and all dividends, distributions, cash, Instruments, Investment Property, financial assets, securities, capital stock, other equity interests, stock options
and commodity contracts, notes, debentures, bonds, promissory notes or other evidences of indebtedness and all other property (including, without limitation, any stock dividend and any distribution in connection with a stock split) from time to time
received, receivable or otherwise distributed in respect of or in exchange for any or all of such capital stock; provided that in no event shall the Pledged Shares include any Excluded Assets. 

  
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 “Trademark Licenses” means all licenses, contracts or other agreements, whether
written or oral, naming any Grantor as licensor or licensee and providing for the grant of any right concerning any Trademark, together with any goodwill connected with and symbolized by any such trademark licenses, contracts or agreements and the
right to prepare for sale or lease and sell or lease any and all Inventory now or hereafter owned by any Grantor and now or hereafter covered by such licenses (including, without limitation, all Trademark Licenses described in Schedule II
hereto). 
 “Trademarks” means all domestic and foreign trademarks, service marks, collective marks, certification marks,
trade names, business names, d/b/a’s, Internet domain names, trade styles, designs, logos and other source or business identifiers and all general intangibles of like nature, now or hereafter owned, adopted, acquired or used by any Grantor
(including, without limitation, all domestic and foreign trademarks, service marks, collective marks, certification marks, trade names, business names, d/b/a’s, Internet domain names, trade styles, designs, logos and other source or business
identifiers described in Schedule II hereto), all applications, registrations and recordings thereof (including, without limitation, applications, registrations and recordings in the United States Patent and Trademark Office or in any similar
office or agency of the United States, any state thereof or any other country or any political subdivision thereof), and all reissues, extensions or renewals thereof, together with all goodwill of the business symbolized by such marks and all
customer lists, formulae and other Records of any Grantor relating to the distribution of products and services in connection with which any of such marks are used. 

SECTION 2. Grant of Security Interest. As collateral security for all of the Obligations, each Grantor hereby pledges and assigns
to the Collateral Agent for the benefit of the Holders, and grants to the Collateral Agent for the benefit of the Holders a continuing security interest in, all personal property of such Grantor, wherever located and whether now or hereafter
existing and whether now owned or hereafter acquired, of every kind and description, tangible or intangible (collectively, the “Collateral”), including, without limitation, the following: 

(a) all Accounts; 
 (b) all
Chattel Paper (whether tangible or electronic); 
 (c) the Commercial Tort Claims specified on Schedule VI hereto; 

(d) all Deposit Accounts (including, without limitation, all cash, and all other property from time to time deposited therein and the monies
and property in the possession or under the control of the Collateral Agent or a Holder or any affiliate, representative, agent or correspondent of the Collateral Agent or a Holder; 

(e) all Documents; 
 (f) all
Equipment; 
 (g) all Fixtures; 

  
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 (h) all General Intangibles (including, without limitation, all Payment Intangibles); 

(i) all Goods; 
 (j) all
Instruments (including, without limitation, Promissory Notes and each certificated Security); 
 (k) all Inventory; 

(l) all Investment Property; 
 (m)
all Copyrights, Patents and Trademarks, and all Licenses; 
 (n) all
Letter-of-Credit Rights; 
 (o) all Supporting Obligations;

 (p) all Pledged Interests; 

(q) all other tangible and intangible personal property of such Grantor (whether or not subject to the Code), including, without limitation,
all bank and other accounts and all cash and all investments therein, all proceeds, products, offspring, accessions, rents, profits, income, benefits, substitutions and replacements of and to any of the property of such Grantor described in the
preceding clauses of this Section 2 (including, without limitation, any proceeds of insurance thereon and all causes of action, claims and warranties now or hereafter held by such Grantor in respect of any of the items
listed above), and all books, correspondence, files and other Records, including, without limitation, all tapes, desks, cards, Software, data and computer programs in the possession or under the control of such Grantor or any other Person from time
to time acting for such Grantor that at any time evidence or contain information relating to any of the property described in the preceding clauses of this Section 2 or are otherwise necessary or helpful in the collection
or realization thereof; and 
 (r) all Proceeds, including all Cash Proceeds and Noncash Proceeds, and products of any and all of the
foregoing Collateral; 
 in each case, howsoever such Grantor’s interest therein may arise or appear (whether by ownership, security interest, claim or
otherwise); 
 provided that notwithstanding anything to the contrary in this Agreement, this Agreement shall not constitute a grant of a security
interest in any Excluded Assets; provided, however, that “Excluded Assets” shall not include any Proceeds, substitutions or replacements of any Excluded Assets unless such Proceeds, substitutions or replacements would
independently constitute Excluded Assets. 

  
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 SECTION 3. Security for Obligations. The security interest created hereby in the
Collateral constitutes continuing collateral security for all of the following obligations, whether now existing or hereafter incurred (collectively, the “Obligations”): 

(a) the prompt payment by each Grantor, as and when due and payable (by scheduled maturity, required prepayment, acceleration, demand or
otherwise), of all amounts from time to time owing by it in respect of the Securities Purchase Agreement, the Notes, the Guaranty and the other Transaction Documents, including, without limitation, (A) all principal of and interest on the Notes
(including, without limitation, all interest that accrues after the commencement of any Insolvency Proceeding of any Grantor, whether or not the payment of such interest is unenforceable or is not allowable due to the existence of such Insolvency
Proceeding), (B) all amounts from time to time owing by such Grantor under the Guaranty, and (C) all fees, commissions, expense reimbursements, indemnifications and all other amounts due or to become due under any of the Transaction Documents;
and 
 (b) the due performance and observance by each Grantor of all of its other obligations from time to time existing in respect of any of
the Transaction Documents for so long as the Notes are outstanding. 
 SECTION 4. Representations and Warranties. Each Grantor
represents and warrants as follows: 
 (a) Schedule I hereto sets forth (i) the exact legal name of such Grantor, and
(ii) the organizational identification number of such Grantor or states that no such organizational identification number exists. 
 (b)
There is no pending or written notice threatening any action, suit, proceeding or claim affecting such Grantor before any governmental authority or any arbitrator, or any order, judgment or award by any governmental authority or arbitrator, that may
adversely affect the grant by such Grantor, or the perfection, of the security interest purported to be created hereby in the Collateral, or the exercise by the Collateral Agent of any of its rights or remedies hereunder. 

(c) Such Grantor’s chief place of business and chief executive office, the place where such Grantor keeps its Records concerning Accounts
and all originals of all Chattel Paper are located at the addresses specified therefor in Schedule III hereto. None of the Accounts is evidenced by Promissory Notes or other Instruments. Set forth in Schedule IV hereto is a complete
and accurate list, as of the date of this Agreement, of (i) each Promissory Note, Security and other Instrument owned by each Grantor with a value in excess of $1,000,000 and (ii) each Deposit Account, Securities Account and Commodities
Account of each Grantor, together with the name and address of each institution at which each such Account is maintained, the account number for each such Account, and an indication of whether such Account is an Excluded Deposit Account. 

(d) Such Grantor owns and controls, or otherwise possesses adequate rights to use, all trademarks, patents, copyrights, inventions, trade
secrets, proprietary information and technology, know-how, formulae, rights of publicity necessary to conduct its business in 

  
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substantially the same manner as conducted as of the date hereof. Schedule II hereto sets forth a true and complete list of all United States federally registered copyrights, issued
patents, Trademarks (including, without limitation, any Internet domain names and the registrar of each such Internet domain name), and Licenses annually owned or used by such Grantor as of the date hereof. Except as set forth in Schedule II,
no such Intellectual Property is the subject of any licensing or franchising agreement. 
 (e) Such Grantor is and will be at all times the
sole and exclusive owner of, or otherwise has and will have adequate rights in, the Collateral free and clear of any Liens, except for Permitted Liens on any Collateral. No effective financing statement or other instrument similar in effect covering
all or any part of the Collateral is on file in any recording or filing office except (A) such as may have been filed in favor of the Collateral Agent relating to this Agreement, and (B) such as may have been filed to perfect any Permitted
Liens. 
 (f) The exercise by the Collateral Agent of any of its rights and remedies hereunder will not contravene any law or any contractual
restriction binding on or otherwise affecting such Grantor or any of its properties and will not result in or require the creation of any Lien, upon or with respect to any of its properties. 

(g) The execution, delivery, and performance of this Agreement do not require the consent or approval of any partner, venture, or any other
Person or any governmental body or other regulatory authority and are not in contravention of, or conflict with, any law or regulation. 

(h) This Agreement creates in favor of the Collateral Agent a legal, valid and enforceable security interest in the Collateral, as security for
the Obligations, except as such enforceability may be limited by general principles of equity or applicable bankruptcy, insolvency, reorganization, moratorium, liquidation or similar laws relating to, or affecting generally, the enforcement of
applicable creditors’ rights and remedies. Such recordings and filings and all other action necessary to perfect and protect such security interest have been duly taken to the extent required hereunder to be taken on or prior to the date
hereof. 
 (i) As of the date hereof, such Grantor does not hold any Commercial Tort Claims nor is such Grantor aware of any such pending
claims, except for such claims described in Schedule VI. 
 (j) Each of the Grantors (other than the Company) is a direct or indirect
wholly-owned Subsidiary of the Company, as of the date hereof. 
 SECTION 5. Covenants as to the Collateral. So long as any of
the Obligations shall remain outstanding, unless the Collateral Agent shall otherwise consent in writing: 
 (a) Further Assurances.
Each Grantor will at its expense, at any time and from time to time, promptly execute and deliver all further instruments and documents and take all further action that the Collateral Agent may reasonably request in order to: (i) perfect and
protect the security interest purported to be created hereby to the extent required hereby; (ii) enable the Collateral Agent to exercise and enforce its rights and remedies hereunder in respect of the Collateral; or (iii) otherwise effect
the purposes of this Agreement, including, 

  
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without limitation: (A) delivering and pledging to the Collateral Agent hereunder each Promissory Note, Security, Chattel Paper or other Instrument, now or hereafter owned by such Grantor,
duly endorsed and accompanied by executed instruments of transfer or assignment, all in form and substance satisfactory to the Collateral Agent, in each case to the extent the value thereof is in excess of $1,000,000, (B) executing and filing
(to the extent, if any, that such Grantor’s signature is required thereon) or authenticating the filing of, such financing or continuation statements, or amendments thereto, as may be necessary or desirable or that the Collateral Agent may
request in order to perfect and preserve the security interest purported to be created hereby, (C) furnishing to the Collateral Agent from time to time statements and schedules further identifying and describing the Collateral and such other
reports in connection with the Collateral in each case as the Collateral Agent may reasonably request, all in reasonable detail, (D) if at any time after the date hereof, such Grantor acquires or holds any Commercial Tort Claim in excess of
$1,000,000, promptly notifying the Collateral Agent in a writing signed by such Grantor setting forth a brief description of such Commercial Tort Claim and granting to the Collateral Agent a security interest therein and in the proceeds thereof,
which writing shall incorporate the provisions hereof and shall be in form and substance reasonably satisfactory to the Collateral Agent, and (E) within 10 Business Days of the receipt by a Grantor of any additional Pledged Interests (or such
longer period of time as the Collateral Agent may agree in its sole discretion), delivery to the Collateral Agent of a Pledge Amendment, duly executed by such Grantor, in substantially the form of Exhibit A hereto. 

(b) Insurance. Each Grantor will, at its own expense, maintain insurance (including, without limitation, commercial general liability
and property insurance) with respect to the Equipment and Inventory in such amounts, against such risks, in such form and with responsible and reputable insurance companies or associations as is required by any governmental authority having
jurisdiction with respect thereto or as is prudent for similarly situated companies. Unless otherwise agreed to by the Collateral Agent, each such policy for liability insurance shall name the Collateral Agent as an additional insured, and each
policy for property damage insurance shall name the Collateral Agent as a lender’s loss payee, in each case as their interests may appear. Such Grantor will, if so requested by the Collateral Agent, deliver to the Collateral Agent original or
duplicate policies of such insurance and, as often as the Collateral Agent may reasonably request, a report of a reputable insurance broker with respect to such insurance. 

(c) Provisions Concerning the Accounts and the Licenses. 

(i) Each Grantor will (A) give the Collateral Agent at least 10 days’ prior written notice of any change in such Grantor’s name
or organizational structure, (B) maintain its jurisdiction of incorporation as set forth in Section 4(b) hereto, (C) promptly notify the Collateral Agent upon obtaining an organizational identification number, if
on the date hereof such Grantor did not have such identification number, and (D) keep adequate records concerning the Accounts and Chattel Paper and permit representatives of the Collateral Agent during normal business hours on reasonable
notice to such Grantor, to inspect and make abstracts from such Records and Chattel Paper. 
 (ii) Each Grantor will, except as otherwise
provided in this subsection (f), continue to collect, at its own expense, all amounts due or to become due under 

  
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the Accounts. In connection with such collections, such Grantor may (and, at the Collateral Agent’s direction, will) take such action as such Grantor or the Collateral Agent may deem
necessary or advisable to enforce collection or performance of the Accounts; provided, however, that the Collateral Agent shall have the right at any time, upon the occurrence and during the continuance of an Event of Default, to
notify the account debtors or obligors under any Accounts of the assignment of such Accounts to the Collateral Agent and to direct such account debtors or obligors to make payment of all amounts due or to become due to such Grantor thereunder
directly to the Collateral Agent or its designated agent and, upon such notification and at the expense of such Grantor and to the extent permitted by law, to enforce collection of any such Accounts and to adjust, settle or compromise the amount or
payment thereof, in the same manner and to the same extent as such Grantor might have done. After receipt by a Grantor of a notice from the Collateral Agent that the Collateral Agent has notified, intends to notify, or has enforced or intends to
enforce a Grantor’s rights against the account debtors or obligors under any Accounts as referred to in the proviso to the immediately preceding sentence, (A) all amounts and proceeds (including Instruments) received by such Grantor in
respect of the Accounts shall be received in trust for the benefit of the Collateral Agent hereunder, shall be segregated from other funds of such Grantor and shall be forthwith paid over to the Collateral Agent in the same form as so received (with
any necessary endorsement) to be held as cash collateral and applied as specified in Section 7(b) hereof, and (B) such Grantor will not adjust, settle or compromise the amount or payment of any Account or release
wholly or partly any account debtor or obligor thereof or allow any credit or discount thereon. In addition, upon the occurrence and during the continuance of an Event of Default, the Collateral Agent may (in its sole and absolute discretion) direct
any or all of the banks and financial institutions with which such Grantor either maintains a Deposit Account or a lockbox or deposits the proceeds of any Accounts (other than Excluded Deposit Accounts) and which is subject to a control agreement to
send immediately to the Collateral Agent by wire transfer (to such account as the Collateral Agent shall specify, or in such other manner as the Collateral Agent shall direct) all or a portion of such securities, cash, investments and other items
held by such institution. Any such securities, cash, investments and other items so received by the Collateral Agent shall (in the sole and absolute discretion of the Collateral Agent) be held as additional Collateral for the Obligations or
distributed in accordance with Section 7 hereof. 
 (d) Transfers and Other Liens. No Grantor will create,
suffer to exist or grant any Lien upon or with respect to any Collateral other than a Permitted Lien. 
 (e) Intellectual Property.

 (i) If applicable, each Grantor shall, upon the Collateral Agent’s written request, duly execute and deliver the applicable
Assignment for Security in the form attached hereto as Exhibit B. Each Grantor shall furnish to the Collateral Agent from time to time upon its request statements and schedules further identifying and describing the Intellectual Property and
Licenses and such other reports in connection with the Intellectual Property and Licenses as the Collateral Agent may reasonably request, all in reasonable detail and promptly upon request of the Collateral Agent, following receipt by the Collateral
Agent of any such statements, schedules or reports, such Grantor shall modify this Agreement by amending Schedule II hereto, as the case may be, to include any Intellectual Property and License, as the case may be, which becomes part of the
Collateral under this Agreement and shall execute and authenticate such 

  
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documents and do such acts as shall be necessary or, in the judgment of the Collateral Agent, desirable to subject such Intellectual Property and Licenses to the Lien and security interest
created by this Agreement. Notwithstanding anything herein to the contrary, upon the occurrence and during the continuance of an Event of Default, (A) such Grantor may not abandon or otherwise permit any Intellectual Property necessary to the
conduct of such Grantor’s business to become invalid without the prior written consent of the Collateral Agent, and (B) if any Intellectual Property is infringed, misappropriated, diluted or otherwise violated in any material respect by a
third party, such Grantor will take such reasonable action as the Collateral Agent shall deem appropriate under the circumstances to protect such Intellectual Property. 

(ii) Upon request of the Collateral Agent, each Grantor shall execute, authenticate and deliver any and all assignments, agreements,
instruments, documents and papers as the Collateral Agent may reasonably request to evidence the Collateral Agent’s security interest hereunder in such Intellectual Property and the General Intangibles of such Grantor relating thereto or
represented thereby, and such Grantor hereby appoints the Collateral Agent its attorney-in-fact to execute and/or authenticate and file all such writings for the
foregoing purposes, all acts of such attorney being hereby ratified and confirmed, and such power (being coupled with an interest) shall be irrevocable until the complete conversion of all of the Company’s obligations under the Notes to equity
securities of the Company and/or indefeasible payment in full in cash of all obligations under the Notes (together with any matured indemnification obligations as of the date of such conversion and/or payment, but excluding any inchoate or unmatured
contingent indemnification obligations). 
 (f) Deposit, Commodities and Securities Accounts. Upon the Collateral Agent’s request
and unless otherwise agreed by the Collateral Agent, each Grantor shall cause each bank and other financial institution with an account referred to in Schedule IV hereto (other than Excluded Deposit Accounts) to execute and deliver to the
Collateral Agent a control agreement, in form and substance reasonably satisfactory to the Collateral Agent, duly executed by such Grantor, the Collateral Agent and such bank or financial institution, or enter into other arrangements in form and
substance reasonably satisfactory to the Collateral Agent. 
 (g) Control. Each Grantor hereby agrees to take any or all action that
the Collateral Agent may request in order for the Collateral Agent to obtain control in accordance with Sections 9-105 – 9-107 of the Code with respect to the
following Collateral: (i) Electronic Chattel Paper, (ii) Investment Property, (iii) Pledged Interests and (iv) Letter-of-Credit Rights, in each case
with a value in excess of $1,000,000. 
 (h) Inspection and Reporting. Each Grantor shall permit the Collateral Agent, or any agent or
representatives thereof or such professionals or other Persons as the Collateral Agent may designate, not more than once a year in the absence of an Event of Default, (i) to examine and make copies of and abstracts from such Grantor’s
records and books of account, (ii) to visit and inspect its properties, (iii) to verify materials, leases, Instruments, Accounts, Inventory and other assets of such Grantor from time to time, (iii) to conduct audits, physical counts,
appraisals and/or valuations, examinations at the locations of such Grantor. Each Grantor shall also permit the Collateral Agent, or any agent or representatives thereof or such professionals or other Persons as the Collateral Agent may designate to
discuss such Grantor’s affairs, finances and accounts with any of its officers subject to the execution by the Collateral Agent or its designee(s) of a mutually agreeable confidentiality agreement. 

  
 -12- 

 (i) Future Subsidiaries. If any Grantor shall hereafter create or acquire any wholly-owned
domestic Subsidiary (other than any such wholly-owned domestic Subsidiary that is a Subsidiary of a Foreign Subsidiary), within thirty (30) days following the creation of acquisition of such Subsidiary (or such longer period as the Collateral
Agent may agree in its sole discretion), such Grantor shall cause such Subsidiary to become a party to this Agreement as an additional “Grantor” hereunder and to become a party to the Guaranty as an additional “Guarantor”
thereunder, and to duly execute and/or deliver such opinions of counsel and other documents, each in form and substance acceptable to the Collateral Agent, as the Collateral Agent shall reasonably request with respect thereto. 

SECTION 6. Additional Provisions Concerning the Collateral. 

(a) Each Grantor hereby (i) authorizes the Collateral Agent to file one or more Uniform Commercial Code financing or continuation
statements, and amendments thereto, relating to the Collateral (including, without limitation, financing statements describing the Collateral as “all assets” or “all personal property” or words of similar effect) and
(ii) ratifies such authorization to the extent that the Collateral Agent has filed any such financing or continuation statements, or amendments thereto, prior to the date hereof. A photocopy or other reproduction of this Agreement or any
financing statement covering the Collateral or any part thereof shall be sufficient as a financing statement where permitted by law. 
 (b)
Each Grantor hereby irrevocably appoints the Collateral Agent as its attorney-in-fact and proxy, with full authority in the place and stead of such Grantor and in the
name of such Grantor or otherwise, from time to time in the Collateral Agent’s discretion, so long as an Event of Default shall have occurred and is continuing, to take any action and to execute any instrument which the Collateral Agent may
deem necessary or advisable to accomplish the purposes of this Agreement (subject to the rights of such Grantor under Section 5 hereof), including, without limitation, (i) to obtain and adjust insurance required to be
paid to the Collateral Agent pursuant to Section 5(e) hereof, (ii) to ask, demand, collect, sue for, recover, compound, receive and give acquittance and receipts for moneys due and to become due under or in respect of
any Collateral, (iii) to receive, endorse, and collect any drafts or other instruments, documents and chattel paper in connection with clause (i) or (ii) above, (iv) to file any claims or take any action or institute any proceedings
which the Collateral Agent may deem necessary or desirable for the collection of any Collateral or otherwise to enforce the rights of the Collateral Agent and the Holders with respect to any Collateral, and (v) to execute assignments, licenses
and other documents to enforce the rights of the Collateral Agent and the Holders with respect to any Collateral. This power is coupled with an interest and is irrevocable until the complete conversion of all of the Company’s obligations under
the Notes to equity securities of the Company and/or indefeasible payment in full in cash of all obligations under the Notes (together with any matured indemnification obligations as of the date of such conversion and/or payment, but excluding any
inchoate or unmatured contingent indemnification obligations). 

  
 -13- 

 (c) For the purpose of enabling the Collateral Agent to exercise rights and remedies hereunder,
at such time as the Collateral Agent shall be lawfully entitled to exercise such rights and remedies upon and during an Event of Default, and for no other purpose, each Grantor hereby grants to the Collateral Agent, to the extent assignable, an
irrevocable, non-exclusive license (exercisable without payment of royalty or other compensation to such Grantor) to use, assign, license or sublicense any Intellectual Property now owned or hereafter acquired
by such Grantor, wherever the same may be located, including in such license reasonable access to all media in which any of the licensed items may be recorded or stored and to all computer programs used for the compilation or printout thereof.
Notwithstanding anything contained herein to the contrary, but subject to the provisions of the Securities Purchase Agreement that limit the right of such Grantor to dispose of its property and Section 5(h) hereof, so long
as no Event of Default shall have occurred and be continuing, such Grantor may exploit, use, enjoy, protect, license, sublicense, assign, sell, dispose of or take other actions with respect to the Intellectual Property in the ordinary course of its
business. In furtherance of the foregoing, unless an Event of Default shall have occurred and be continuing, the Collateral Agent shall from time to time, upon the request of a Grantor, execute and deliver any instruments, certificates or other
documents, in the form so requested, which such Grantor shall have certified are appropriate (in such Grantor’s judgment) to allow it to take any action permitted above (including relinquishment of the license provided pursuant to this clause
(c) as to any Intellectual Property). Further, upon the complete conversion of all of the Company’s obligations under the Notes to equity securities of the Company and/or indefeasible payment in full in cash of all obligations under the
Notes (together with any matured indemnification obligations as of the date of such conversion and/or payment, but excluding any inchoate or unmatured contingent indemnification obligations), the Collateral Agent (subject to
Section 10(e) hereof) shall release and reassign to such Grantor all of the Collateral Agent’s right, title and interest in and to the Intellectual Property, and the Licenses, all without recourse, representation or
warranty whatsoever. The exercise of rights and remedies hereunder by the Collateral Agent shall not terminate the rights of the holders of any licenses or sublicenses theretofore granted by such Grantor in accordance with the second sentence of
this clause (c). Each Grantor hereby releases the Collateral Agent from any claims, causes of action and demands at any time arising out of or with respect to any actions taken or omitted to be taken by the Collateral Agent under the powers of
attorney granted herein other than actions taken or omitted to be taken through the Collateral Agent’s gross negligence or willful misconduct, as determined by a final determination of a court of competent jurisdiction. 

(d) If a Grantor fails to perform any agreement contained herein, the Collateral Agent may itself perform, or cause performance of, such
agreement or obligation, in the name of such Grantor or the Collateral Agent, and the expenses of the Collateral Agent incurred in connection therewith shall be payable by such Grantor pursuant to Section 8 hereof and shall
be secured by the Collateral. 
 (e) The powers conferred on the Collateral Agent hereunder are solely to protect its interest in the
Collateral and shall not impose any duty upon it to exercise any such powers. Except for the safe custody of any Collateral in its possession and the accounting for moneys actually received by it hereunder, the Collateral Agent shall have no duty as
to any Collateral or as to the taking of any necessary steps to preserve rights against prior parties or any other rights pertaining to any Collateral. 

  
 -14- 

 (f) Anything herein to the contrary notwithstanding (i) each Grantor shall remain liable
under the Licenses and otherwise with respect to any of the Collateral to the extent set forth therein to perform all of its obligations thereunder to the same extent as if this Agreement had not been executed, (ii) the exercise by the
Collateral Agent of any of its rights hereunder shall not release such Grantor from any of its obligations under the Licenses or otherwise in respect of the Collateral, and (iii) the Collateral Agent shall not have any obligation or liability
by reason of this Agreement under the Licenses or with respect to any of the other Collateral, nor shall the Collateral Agent be obligated to perform any of the obligations or duties of such Grantor thereunder or to take any action to collect or
enforce any claim for payment assigned hereunder. 
 SECTION 7. Remedies Upon Event of Default. If any Event of Default shall
have occurred and be continuing: 
 (a) The Collateral Agent may exercise in respect of the Collateral, in addition to any other rights and
remedies provided for herein or otherwise available to it, all of the rights and remedies of a secured party upon default under the Code (whether or not the Code applies to the affected Collateral), and also may (i) take absolute control of the
Collateral, including, without limitation, transfer into the Collateral Agent’s name or into the name of its nominee or nominees (to the extent the Collateral Agent has not theretofore done so) and thereafter receive, for the benefit of the
Collateral Agent, all payments made thereon, give all consents, waivers and ratifications in respect thereof and otherwise act with respect thereto as though it were the outright owner thereof, (ii) require each Grantor to, and each Grantor
hereby agrees that it will at its expense and upon request of the Collateral Agent forthwith, assemble all or part of its respective Collateral as directed by the Collateral Agent and make it available to the Collateral Agent at a place or places to
be designated by the Collateral Agent that is reasonably convenient to both parties, and the Collateral Agent may enter into and occupy any premises owned or leased by such Grantor where the Collateral or any part thereof is located or assembled for
a reasonable period in order to effectuate the Collateral Agent’s rights and remedies hereunder or under law, without obligation to such Grantor in respect of such occupation, and (iii) without notice except as specified below and without
any obligation to prepare or process the Collateral for sale, (A) sell the Collateral or any part thereof in one or more parcels at public or private sale, at any of the Collateral Agent’s offices or elsewhere, for cash, on credit or for
future delivery, and at such price or prices and upon such other terms as the Collateral Agent may deem commercially reasonable and/or (B) lease, license or dispose of the Collateral or any part thereof upon such terms as the Collateral Agent
may deem commercially reasonable. Each Grantor agrees that, to the extent notice of sale or any other disposition of its respective Collateral shall be required by law, at least ten (10) days’ notice to such Grantor of the time and place
of any public sale or the time after which any private sale or other disposition of its respective Collateral is to be made shall constitute reasonable notification. The Collateral Agent shall not be obligated to make any sale or other disposition
of any Collateral regardless of notice of sale having been given. The Collateral Agent may adjourn any public or private sale from time to time by announcement at the time and place fixed therefor, and such sale may, without further notice, be made
at the time and place to which it was so adjourned. Each Grantor hereby waives any claims against the Collateral Agent and the Holders arising by reason of the fact that the price at which its respective Collateral may have been sold at a private
sale was less than the price which might have been obtained at a public sale or was less than the aggregate amount of the 

  
 -15- 

 
Obligations, even if the Collateral Agent accepts the first offer received and does not offer such Collateral to more than one offeree, and waives all rights that such Grantor may have to require
that all or any part of such Collateral be marshalled upon any sale (public or private) thereof. Each Grantor hereby acknowledges that (i) any such sale of its respective Collateral by the Collateral Agent shall be made without warranty,
(ii) the Collateral Agent may specifically disclaim any warranties of title, possession, quiet enjoyment or the like, and (iii) such actions set forth in clauses (i) and (ii) above shall not adversely affect the commercial
reasonableness of any such sale of Collateral. In addition to the foregoing, (1) upon written notice to any Grantor from the Collateral Agent, such Grantor shall cease any use of the Intellectual Property or any trademark, patent or copyright
similar thereto for any purpose described in such notice; (2) the Collateral Agent may, at any time and from time to time, upon 10 days’ prior notice to such Grantor, license, whether general, special or otherwise, and whether on an
exclusive or non-exclusive basis, any of the Intellectual Property, throughout the universe for such term or terms, on such conditions, and in such manner, as the Collateral Agent shall in its sole discretion
determine to the extent consistent with any restrictions or conditions imposed upon such Grantor with respect to such Intellectual Property by license or other contractual arrangement; and (2) the Collateral Agent may, at any time, pursuant to
the authority granted in Section 6 hereof (such authority being effective upon the occurrence and during the continuance of an Event of Default), execute and deliver on behalf of such Grantor, one or more instruments of
assignment of the Intellectual Property (or any application or registration thereof), in form suitable for filing, recording or registration in any country. 

(b) Any cash held by the Collateral Agent as Collateral and all Cash Proceeds received by the Collateral Agent in respect of any sale of or
collection from, or other realization upon, all or any part of the Collateral may, in the discretion of the Collateral Agent, be held by the Collateral Agent as collateral for, and/or then or at any time thereafter applied (after payment of any
amounts payable to the Collateral Agent pursuant to Section 8 hereof) in whole or in part by the Collateral Agent against, all or any part of the Obligations in such order as the Collateral Agent shall elect, consistent
with the provisions of the Securities Purchase Agreement. Any surplus of such cash or Cash Proceeds held by the Collateral Agent and remaining after the complete conversion of all of the Company’s obligations under the Notes to equity
securities of the Company and/or indefeasible payment in full in cash of all obligations under the Notes (together with any matured indemnification obligations as of the date of such conversion and/or payment, but excluding any inchoate or unmatured
contingent indemnification obligations) shall be paid over to whomsoever shall be lawfully entitled to receive the same or as a court of competent jurisdiction shall direct. 

(c) In the event that the proceeds of any such sale, collection or realization are insufficient to pay all amounts to which the Collateral
Agent and the Holders are legally entitled, each Grantor shall be liable for the deficiency, together with interest thereon at the highest rate specified in any of the applicable Transaction Documents for interest on overdue principal thereof or
such other rate as shall be fixed by applicable law, together with the costs of collection and the reasonable fees, costs, expenses and other client charges of any attorneys employed by the Collateral Agent to collect such deficiency. 

(d) Each Grantor hereby acknowledges that if the Collateral Agent complies with any applicable state, provincial, or federal law requirements
in connection with a disposition of the Collateral, such compliance will not adversely affect the commercial reasonableness of any sale or other disposition of the Collateral. 

  
 -16- 

 (e) The Collateral Agent shall not be required to marshal any present or future collateral
security (including, but not limited to, this Agreement and the Collateral) for, or other assurances of payment of, the Obligations or any of them or to resort to such collateral security or other assurances of payment in any particular order, and
all of the Collateral Agent’s rights hereunder and in respect of such collateral security and other assurances of payment shall be cumulative and in addition to all other rights, however existing or arising. To the extent that each Grantor
lawfully may, such Grantor hereby agrees that it will not invoke any law relating to the marshalling of collateral which might cause delay in or impede the enforcement of the Collateral Agent’s rights under this Agreement or under any other
instrument creating or evidencing any of the Obligations or under which any of the Obligations is outstanding or by which any of the Obligations is secured or payment thereof is otherwise assured, and, to the extent that it lawfully may, such
Grantor hereby irrevocably waives the benefits of all such laws. 
 SECTION 8. Expenses. 

(a) Each Grantor agrees, jointly and severally, to, upon demand, pay to the Collateral Agent the amount of any and all costs and expenses which
the Collateral Agent may incur in connection with (i) the custody, preservation, use or operation of, or the sale of, collection from, or other realization upon, any Collateral or (ii) the exercise or enforcement of any of the rights of
the Collateral Agent hereunder. 
 SECTION 9. Notices, Etc. All notices and other communications provided for hereunder shall be
in writing and shall be mailed (by certified mail, postage prepaid and return receipt requested), telecopied or delivered, if to a Grantor at its address specified below and if to the Collateral Agent to it, at its address specified below; or as to
any such Person, at such other address as shall be designated by such Person in a written notice to such other Person complying as to delivery with the terms of this Section 9. All such notices and other communications
shall be effective (a) if sent by certified mail, return receipt requested, when received or five days after deposited in the mails, whichever occurs first, (b) if telecopied or sent by electronic mail, when transmitted (during normal
business hours), or (c) if delivered, upon delivery. 
 SECTION 10. Miscellaneous. 

(a) No amendment of any provision of this Agreement shall be effective unless it is in writing and signed by each Grantor and the Collateral
Agent, and no waiver of any provision of this Agreement, and no consent to any departure by a Grantor therefrom, shall be effective unless it is in writing and signed by the Collateral Agent, and then such waiver or consent shall be effective only
in the specific instance and for the specific purpose for which given. 
 (b) No failure on the part of the Collateral Agent to exercise, and
no delay in exercising, any right hereunder or under any of the other Transaction Documents shall operate as a waiver thereof; nor shall any single or partial exercise of any such right preclude any other or further exercise thereof or the exercise
of any other right. The rights and remedies of the 

  
 -17- 

 
Collateral Agent or any Holder provided herein and in the other Transaction Documents are cumulative and are in addition to, and not exclusive of, any rights or remedies provided by law. The
rights of the Collateral Agent or any Holder under any of the other Transaction Documents against any party thereto are not conditional or contingent on any attempt by such Person to exercise any of its rights under any of the other Transaction
Documents against such party or against any other Person, including but not limited to, any Grantor. 
 (c) To the extent permitted by
applicable law, each Grantor hereby waives promptness, diligence, notice of acceptance and any other notice with respect to any of the Obligations and this Agreement and any requirement that the Collateral Agent exhaust any right or take any action
against any other Person or any Collateral. Each Grantor acknowledges that it will receive direct and indirect benefits from the financing arrangements contemplated herein and that the waiver set forth in this Section 10(c)
is knowingly made in contemplation of such benefits. The Grantors hereby waive any right to revoke this Agreement, and acknowledge that this Agreement is continuing in nature and applies to all Obligations, whether existing now or in the future.

 (d) No Grantor may exercise any rights that it may now or hereafter acquire against any other Grantor that arise from the existence,
payment, performance or enforcement of any Grantor’s obligations under this Agreement, including, without limitation, any right of subrogation, reimbursement, exoneration, contribution or indemnification and any right to participate in any
claim or remedy of the Collateral Agent against any Grantor or any Collateral, whether or not such claim, remedy or right arises in equity or under contract, statute or common law, including, without limitation, the right to take or receive from any
Grantor, directly or indirectly, in cash or other property or by set-off or in any other manner, payment or security solely on account of such claim, remedy or right, unless and until the complete conversion
of all of the Company’s obligations under the Notes to equity securities of the Company and/or indefeasible payment in full in cash of all obligations under the Notes (together with any matured indemnification obligations as of the date of such
conversion and/or payment, but excluding any inchoate or unmatured contingent indemnification obligations). If any amount shall be paid to a Grantor in violation of the immediately preceding sentence at any time prior to the complete conversion of
all of the Company’s obligations under the Notes to equity securities of the Company and/or indefeasible payment in full in cash of all obligations under the Notes (together with any matured indemnification obligations as of the date of such
conversion and/or payment, but excluding any inchoate or unmatured contingent indemnification obligations), such amount shall be held in trust for the benefit of the Collateral Agent and shall forthwith be paid to the Collateral Agent to be credited
and applied to the Obligations and all other amounts payable under the Transaction Documents, whether matured or unmatured, in accordance with the terms of the Transaction Documents, or to be held as Collateral for any Obligations or other amounts
payable under the Transaction Documents thereafter arising. 
 (e) Any provision of this Agreement that is prohibited or unenforceable in any
jurisdiction shall, as to such jurisdiction, be ineffective to the extent of such prohibition or unenforceability without invalidating the remaining portions hereof or thereof or affecting the validity or enforceability of such provision in any
other jurisdiction. 

  
 -18- 

 (f) This Agreement shall create a continuing security interest in the Collateral and shall
(i) remain in full force and effect until the complete conversion of all of the Company’s obligations under the Notes to equity securities of the Company and/or indefeasible payment in full in cash of all obligations under the Notes
(together with any matured indemnification obligations as of the date of such conversion and/or payment, but excluding any inchoate or unmatured contingent indemnification obligations), and (ii) be binding on each Grantor and all other Persons
who become bound as debtor to this Agreement in accordance with Section 9-203(d) of the Code and shall inure, together with all rights and remedies of the Collateral Agent and the Holders hereunder, to
the benefit of the Collateral Agent and the Holders and their respective permitted successors, transferees and assigns. Without limiting the generality of clause (ii) of the immediately preceding sentence, without notice to any Grantor, the
Collateral Agent and the Holders may assign or otherwise transfer their rights and obligations under this Agreement and any of the other Transaction Documents, to any other Person and such other Person shall thereupon become vested with all of the
benefits in respect thereof granted to the Collateral Agent and the Holders herein or otherwise. Upon any such assignment or transfer, all references in this Agreement to the Collateral Agent or any such Holder shall mean the assignee of the
Collateral Agent or such Holder. None of the rights or obligations of any Grantor hereunder may be assigned or otherwise transferred without the prior written consent of the Collateral Agent, and any such assignment or transfer without the consent
of the Collateral Agent shall be null and void. 
 (g) Upon the complete conversion of all of the Company’s obligations under the Notes
to equity securities of the Company and/or indefeasible payment in full in cash of all obligations under the Notes (together with any matured indemnification obligations as of the date of such conversion and/or payment, but excluding any inchoate or
unmatured contingent indemnification obligations), (i) this Agreement and the security interests created hereby shall terminate and all rights to the Collateral shall revert to the respective Grantor that granted such security interests hereunder,
and (ii) the Collateral Agent will, upon such Grantor’s request and at such Grantor’s expense, (A) return to such Grantor such of the Collateral as shall not have been sold or otherwise disposed of or applied pursuant to the
terms hereof, and (B) execute and deliver to such Grantor such documents as such Grantor shall reasonably request to evidence such termination, all without any representation, warranty or recourse whatsoever. The Lien granted hereby on any
Collateral shall be automatically released upon (i) any sale or other transfer by any Grantor of any Collateral that is permitted under the Transaction Documents to any Person other than any other Grantor, (ii) the effectiveness of any
written consent of the Collateral Agent to the release of the security interest granted hereby in any Collateral, (iii) with respect to any Collateral owned by a Grantor, upon the release of such Grantor from its obligations under the Guaranty
or (iv) any Collateral subject to the security interest granted hereby becoming Excluded Assets. 
 (h) THIS AGREEMENT SHALL BE GOVERNED
BY, CONSTRUED AND INTERPRETED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, EXCEPT AS REQUIRED BY MANDATORY PROVISIONS OF LAW AND EXCEPT TO THE EXTENT THAT THE VALIDITY AND PERFECTION OR THE PERFECTION AND THE EFFECT OF PERFECTION OR NON-PERFECTION OF THE SECURITY INTEREST CREATED HEREBY, OR REMEDIES HEREUNDER, IN RESPECT OF ANY PARTICULAR COLLATERAL ARE GOVERNED BY THE LAW OF A JURISDICTION OTHER THAN THE STATE OF NEW YORK. 

  
 -19- 

 (i) ANY LEGAL ACTION, SUIT OR PROCEEDING WITH RESPECT TO THIS AGREEMENT OR ANY DOCUMENT RELATED
THERETO MAY BE BROUGHT IN THE COURTS OF THE STATE OF NEW YORK IN THE COUNTY OF NEW YORK OR THE UNITED STATES OF AMERICA FOR THE SOUTHERN DISTRICT OF NEW YORK, AND APPELLATE COURTS THEREOF, AND, BY EXECUTION AND DELIVERY OF THIS AGREEMENT, EACH
GRANTOR HEREBY ACCEPTS FOR ITSELF AND IN RESPECT OF ITS PROPERTY, GENERALLY AND UNCONDITIONALLY, THE JURISDICTION OF THE AFORESAID COURTS. EACH GRANTOR HEREBY EXPRESSLY AND IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY LAW, ANY OBJECTION,
INCLUDING, WITHOUT LIMITATION, ANY OBJECTION TO THE LAYING OF VENUE OR BASED ON THE GROUNDS OF FORUM NON CONVENIENS, WHICH IT MAY NOW OR HEREAFTER HAVE TO THE BRINGING OF ANY SUCH ACTION, SUIT OR PROCEEDING IN SUCH RESPECTIVE
JURISDICTIONS AND CONSENTS TO THE GRANTING OF SUCH LEGAL OR EQUITABLE RELIEF AS IS DEEMED APPROPRIATE BY THE COURT. 
 (j) EACH GRANTOR AND
(BY ITS ACCEPTANCE OF THE BENEFITS OF THIS AGREEMENT) THE COLLATERAL AGENT WAIVES ANY RIGHT IT MAY HAVE TO TRIAL BY JURY IN RESPECT OF ANY LITIGATION BASED ON, ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS AGREEMENT OR ANY OF THE OTHER
TRANSACTION DOCUMENTS, OR ANY COURSE OF CONDUCT, COURSE OF DEALING, VERBAL OR WRITTEN STATEMENT OR OTHER ACTION OF THE PARTIES HERETO. 
 (k)
Nothing contained herein shall affect the right of the Collateral Agent to serve process in any other manner permitted by law or commence legal proceedings or otherwise proceed against any Grantor or any property of such Grantor in any other
jurisdiction. 
 (l) Each Grantor irrevocably and unconditionally waives any right it may have to claim or recover in any legal action, suit
or proceeding referred to in this Section any special, exemplary, punitive or consequential damages. 
 (m) Section headings herein are
included for convenience of reference only and shall not constitute a part of this Agreement for any other purpose. 
 (n) This Agreement may
be executed in any number of counterparts and by different parties hereto in separate counterparts, each of which shall be deemed to be an original, but all of which taken together constitute one in the same Agreement. 

[REMAINDER OF THIS PAGE INTENTIONALLY LEFT BLANK] 

  
 -20- 

 IN WITNESS WHEREOF, each Grantor has caused this Agreement to be executed and delivered by its
officer thereunto duly authorized, as of the date first above written. 
  

			
	GRANTORS:
	
	COMSCORE, INC., a Delaware corporation
		
	By:	 	 /s/ Gregory A. Fink

		 	Name: Gregory A. Fink
		 	Title: Chief Financial Officer
	
	Address for Notices:
	
	11950 Democracy Drive,
	Suite 600
	Reston, Virginia 20190
	
	CARMENERE HOLDING COMPANY COMSCORE INTERNATIONAL, INC.
	CREATIVE KNOWLEDGE, INC.
	FULL CIRCLE STUDIES, INC.
	MARKETSCORE, INC.
	TMRG, INC.
	VOICEFIVE, INC., 
	each of the above, a Delaware corporation
		
	By:	 	 /s/ Gregory A. Fink

		 	Name: Gregory A. Fink
		 	Title: Treasurer
	
	Address for Notices:
	
	11950 Democracy Drive,
	Suite 600
	Reston, Virginia 20190

  
 PLEDGE
AND SECURITY AGREEMENT 

 
			
	 COMSCORE EUROPE, LLC

COMSCORE HOLDINGS LLC

	LNKMTR, LLC
	M.LABS, LLC
	PROXIMIC, LLC
	each of the above, a Delaware limited liability company
		
	By:	 	/s/ Gregory A. Fink
		 	Name: Gregory A. Fink
		 	Title: Treasurer
	
	Address for Notices:
	
	11950 Democracy Drive,
	Suite 600
	Reston, Virginia 20190
	
	COMSCORE BRAND AWARENESS, L.L.C., a
	Delaware limited liability company
		
	By:	 	comScore, Inc., its sole member
		
	By:	 	/s/ Gregory A. Fink
		 	Name: Gregory A. Fink
		 	Title: Chief Financial Officer
	
	Address for Notices:
	
	11950 Democracy Drive,
	Suite 600
	Reston, Virginia 20190

  
 PLEDGE
AND SECURITY AGREEMENT 

 
			
	CSWS, LLC, a Virginia limited liability company
		
	By:	 	/s/ Gregory A. Fink
		 	Name: Gregory A. Fink
		 	Title: Treasurer
	
	Address for Notices:
	
	11950 Democracy Drive,
	Suite 600
	Reston, Virginia 20190
	
	HOLLYWOOD SOFTWARE, INC., a California corporation
		
	By:	 	/s/ Gregory A. Fink
		 	Name: Gregory A. Fink
		 	Title: Chief Financial Officer
	
	Address for Notices:
	
	11950 Democracy Drive,
	Suite 600
	Reston, Virginia 20190
	
	RENTRAK CORPORATION, an Oregon corporation
		
	By:	 	/s/ Gregory A. Fink
		 	Name: Gregory A. Fink
		 	Title: Chief Financial Officer
	
	Address for Notices:
	
	11950 Democracy Drive,
	Suite 600
	Reston, Virginia 20190

  
 PLEDGE
AND SECURITY AGREEMENT 

			
	ACCEPTED BY:
	
	STARBOARD VALUE AND OPPORTUNITY MASTER FUND LTD., as Collateral Agent

			
		
	 By:
	 	Starboard Value LP, its investment manager
		
	By:	 	 /s/ Jeffrey C. Smith

		 	Name: Jeffrey C. Smith
		 	Title: Authorized Signatory

			
	
	Address for Notices:
	
	 Starboard Value and Opportunity Master Fund Ltd., as Collateral Agent

	 777 Third Avenue, 18th Floor

	 New York, NY 10017

  
 PLEDGE
AND SECURITY AGREEMENTEX-10.4

 Exhibit 10.4 

EXECUTION VERSION 

REGISTRATION RIGHTS AGREEMENT 

REGISTRATION RIGHTS AGREEMENT (this “Agreement”), dated as of January 16, 2018, by and among comScore, Inc., a
Delaware corporation, with headquarters located at 11950 Democracy Drive, Suite 600, Reston, Virginia 20190 (the “Company”), and the investors listed on the Schedule of Buyers attached hereto (each, a “Buyer” and
collectively, the “Buyers”). 
 WHEREAS: 

A. In connection with the entry into the Securities Purchase Agreement by and among the parties hereto of even date herewith (the
“Securities Purchase Agreement”), the Company has agreed, upon the terms and subject to the conditions of the Securities Purchase Agreement, to issue and sell to each Buyer (i) on the Initial Closing Date (as defined in the
Securities Purchase Agreement) and on one or more Additional Closing Dates (as defined in the Securities Purchase Agreement), if any, senior secured convertible notes of the Company (the “Notes”), which will, among other things, be
convertible into shares of the Company’s common stock, par value $0.001 per share (the “Common Stock”) (the shares of Common Stock issuable pursuant to the terms of the Notes, collectively, the “Conversion
Shares”) and (ii) on such date specified in the Securities Purchase Agreement, warrants (the “Warrants”) which will be exercisable to purchase shares of Common Stock (as exercised, collectively, the “Warrant
Shares”) in accordance with the terms of the Warrants. 
 B. In accordance with the terms of the Securities Purchase Agreement, the
Company has agreed to provide certain registration rights under the Securities Act of 1933, as amended, and the rules and regulations thereunder, or any similar successor statute (collectively, the “1933 Act”), and applicable state
securities laws. 
 NOW, THEREFORE, in consideration of the premises and the mutual covenants contained herein and other good and
valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Company and each of the Buyers hereby agree as follows: 

1. Definitions. 

Capitalized terms used herein and not otherwise defined herein shall have the respective meanings set forth in the Securities Purchase
Agreement. As used in this Agreement, the following terms shall have the following meanings: 
 (a) “Additional Effective
Date” means the date the Additional Registration Statement is declared effective by the SEC. 
 (b) “Additional
Effectiveness Deadline” means the date which is the earlier of (i) ninety (90) calendar days after the earlier of the Additional Filing Date and the Additional Filing Deadline and (ii) the fifth (5th) Business Day after the date the Company is notified (orally or in writing, whichever is earlier) by the SEC that such Additional Registration Statement will not be reviewed or will not be subject
to further review; provided, however, that if 

 
the Additional Effectiveness Deadline falls on a Saturday, Sunday or other day that the SEC is not open for business, the Additional Effectiveness Deadline shall be extended to the next Business
Day on which the SEC is open for business; provided, further, however that any Additional Effectiveness Deadline shall not be less than one (1) Business Day following the Company’s receipt of approval of Legal Counsel (as defined below).

 (c) “Additional Filing Date” means the date on which the Additional Registration Statement is filed with the SEC. 

(d) “Additional Filing Deadline” means if Cutback Shares are required to be included in any Additional Registration
Statement, the later of (i) the date sixty (60) days after the date substantially all of the Registrable Securities registered under the immediately preceding Registration Statement are sold and (ii) the date six (6) months from
the Initial Effective Date or the Subsequent Effective Date, as applicable, or the most recent Additional Effective Date, as applicable. 

(e) “Additional Notes” shall have the meaning ascribed to such term in the securities Purchase Agreement. 

(f) “Additional Registrable Securities” means, (i) any Cutback Shares not previously included on a Registration
Statement and (ii) any capital stock of the Company issued or issuable with respect to the Notes, the Conversion Shares, the Warrants, the Warrant Shares, or the Cutback Shares, as applicable, as a result of any stock split, stock dividend,
recapitalization, exchange or similar event or otherwise, without regard to any limitations on the issuance of Common Stock pursuant to the terms of the Notes or exercise of the Warrants. 

(g) “Additional Registration Statement” means a registration statement or registration statements of the Company filed under
the 1933 Act covering the resale of any Additional Registrable Securities. 
 (h) “Additional Required Registration Amount”
means any Cutback Shares not previously included on a Registration Statement, without regard to any limitations on the issuance of Common Stock pursuant to the terms of the Notes or exercise of the Warrants. 

(i) “Business Day” means any day other than Saturday, Sunday or any other day on which commercial banks in the City of New
York are authorized or required by law to remain closed. 
 (j) “Conversion Rate” shall have the meaning ascribed to such
term in the Notes. 
 (k) “Cutback Shares” means any of the Initial Required Registration Amount, the Subsequent Required
Registration Amount or the Additional Required Registration Amount of Registrable Securities not included in all Registration Statements previously declared effective hereunder as a result of a limitation on the maximum number of shares of Common
Stock of the Company permitted to be registered by the staff of the SEC pursuant to Rule 415. 

  
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The number of Cutback Shares shall be allocated pro rata among the Investors with each Investor entitled to elect which of its Conversion Shares and/or Warrant Shares that are to be considered
Cutback Shares. For the purpose of determining the Cutback Shares, (i) the Other Registrable Securities (as defined in Section 2(d)) and the Registrable Securities shall be excluded on a pro rata basis among the holders of such Other
Registrable Securities and the Investors and (ii) in order to determine any applicable Required Registration Amount of Registrable Securities, unless an Investor gives written notice to the Company to the contrary with respect to the allocation
of its Cutback Shares, first, the Warrant Shares shall be excluded on a pro rata basis among the Investors until all of the Warrant Shares have been excluded, and second the Conversion Shares shall be excluded on a pro rata basis among the Investors
until all of the Conversion Shares have been excluded. 
 (l) “Effective Date” means the Initial Effective Date, the
Subsequent Effective Date and the Additional Effective Date, as applicable. 
 (m) “Effectiveness Deadline” means the
Initial Effectiveness Deadline, the Subsequent Effectiveness Deadline and the Additional Effectiveness Deadline, as applicable. 
 (n)
“Eligible Market” means the Principal Market, The New York Stock Exchange, Inc., the NYSE American, The NASDAQ Global Select Market, The NASDAQ Capital Market, The NASDAQ Global Market, the OTC QX, the OTC QB or the OTC Pink. 

(o) “Filing Deadline” means the Initial Filing Deadline, the Subsequent Filing Deadline and each Additional Filing Deadline,
as applicable. 
 (p) “Interest” shall have the meaning ascribed to such term in the Notes. 

(q) “Interest Rate” shall have the meaning ascribed to such term in the Notes. 

(r) “Interest Shares” shall have the meaning ascribed to such term in the Securities Purchase Agreement. 

(s) “Initial Effective Date” means the date that the Initial Registration Statement has been declared effective by the SEC.

 (t) “Initial Effectiveness Deadline” means the date which is the earlier of (i) ninety (90) calendar days after the
earlier of the Initial Filing Date and the Initial Filing Deadline and (ii) the fifth (5th) Business Day after the date the Company is notified (orally or in writing, whichever is earlier) by
the SEC that such Initial Registration Statement will not be reviewed or will not be subject to further review; provided, however, that if the Initial Effectiveness Deadline falls on a Saturday, Sunday or other day that the SEC is closed for
business, the Initial Effectiveness Deadline shall be extended to the next Business Day on which the SEC is open for business; provided, further, however, that the Initial Effectiveness Deadline shall not be less than one (1) Business Day
following the Company’s receipt of the approval of Legal Counsel to effect such request. 

  
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 (u) “Initial Filing Date” means the date on which the Initial Registration
Statement is filed with the SEC. 
 (v) “Initial Filing Deadline” means the date which is thirty (30) calendar days
after the Company has filed with the SEC its Annual Report on Form 10-K containing its audited financial statements for the fiscal years ended December 31, 2015, December 31, 2016 and
December 31, 2017 (the “Form 10-K”). 
 (w) “Initial Registrable
Securities” means (i) the Conversion Shares issued or issuable pursuant to the terms of the Initial Notes (as defined in the Securities Purchase Agreement) and any Additional Notes issued prior to the Initial Filing Date, (ii) the
Warrant Shares issued or issuable upon exercise of any Warrants issued prior to the Initial Filing Date, and (iii) any capital stock of the Company issued or issuable with respect to the Initial Notes, any Additional Notes issued prior to the
Initial Filing Date, the Conversion Shares with respect to the Initial Notes and any Additional Notes issued prior to the Initial Filing Date, any Warrants Shares issued prior to the Initial Filing Date, or the Warrant Shares with respect to any
Warrants issued prior to the Initial Filing Date, if any, as a result of any stock split, stock dividend, recapitalization, exchange or similar event or otherwise, in each case without regard to any limitations on the issuance of Common Stock
pursuant to the terms of the Notes or exercise of the Warrants. 
 (x) “Initial Registration Statement” means a
registration statement or registration statements of the Company filed under the 1933 Act covering the resale of the Initial Registrable Securities. 

(y) “Initial Required Registration Amount” means the sum of (i) (x) the number of Conversion Shares issued pursuant
to the Notes prior to the Initial Filing Date and (y) 130% of the maximum number of Conversion Shares issuable pursuant to the Notes outstanding immediately prior to the Initial Filing Date based on the Conversion Rate in effect as of the
Initial Filing Date, without regard to any limitations on the issuance of Common Stock pursuant to the terms of the Notes, (ii) the maximum number of Warrant Shares issued and issuable pursuant to any Warrants issued prior to the Initial Filing
Date, without regard to any limitations on the issuance of Common Stock pursuant to the terms of the Warrants and (iii) (x) the number of Interest Shares issued pursuant to the Notes prior to the Initial Filing Date and (y) 130% of the
maximum number of remaining shares issuable as Interest Shares assuming all remaining Interest through the Maturity Date is paid in Interest Shares at the maximum possible Interest Rate, without regard to any limitations on the issuance of Common
Stock pursuant to the terms of the Notes, in each case as of the Trading Day immediately preceding the Initial Filing Date or any other applicable date of determination. 

(z) “Investor” means a Buyer or any transferee or assignee thereof to whom a Buyer assigns its rights under this Agreement
and who agrees to become bound by the provisions of this Agreement in accordance with Section 9 and any transferee or assignee thereof to whom a transferee or assignee assigns its rights under this Agreement and who agrees to become bound by
the provisions of this Agreement in accordance with Section 9. 

  
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 (aa) “Maturity Date” shall have the meaning ascribed to such term in the Notes.

 (bb) “Person” means an individual, a limited liability company, a partnership, a joint venture, a corporation, a trust,
an unincorporated organization and a government or any department or agency thereof. 
 (cc) “Principal Market” means the
OTC Markets, or, if the OTC Markets is not the principal trading market for the Common Stock, then the principal national securities exchange or securities market on which the Common Stock is traded. 

(dd) “register,” “registered,” and “registration” refer to a registration effected by
preparing and filing one or more Registration Statements (as defined below) in compliance with the 1933 Act and pursuant to Rule 415, and the declaration or ordering of effectiveness of such Registration Statement(s) by the SEC. 

(ee) “Registrable Securities” means the Initial Registrable Securities, the Subsequent Registrable Securities and the
Additional Registrable Securities. 
 (ff) “Registration Statement” means the Initial Registration Statement, the
Subsequent Registration Statement and the Additional Registration Statement, as applicable. 
 (gg) “Required Holders”
means the Investors holding at least a majority of the Registrable Securities at the applicable time such determination is to be made. 

(hh) “Required Registration Amount” means either the Initial Required Registration Amount, the Subsequent Registration Amount
or the Additional Required Registration Amount, as applicable. 
 (ii) “Rule 415” means Rule 415 promulgated under the 1933
Act or any successor rule providing for offering securities on a continuous or delayed basis. 
 (jj) “SEC” means the
United States Securities and Exchange Commission. 
 (kk) “Subsequent Effective Date” means the date that a Subsequent
Registration Statement is declared effective by the SEC. 
 (ll) “Subsequent Effectiveness Deadline” means the date
which is the earlier of (i) ninety (90) calendar days after the earlier of the Subsequent Filing Date and the Subsequent Filing Deadline and (ii) the fifth (5th) Business
Day after the date the Company is notified (orally or in writing, whichever is earlier) by the SEC that such Subsequent Registration Statement will not be reviewed or will not be subject to further review; provided, however, that if

  
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the Subsequent Effectiveness Deadline falls on a Saturday, Sunday or other day that the SEC is closed for business, the Subsequent Effectiveness Deadline shall be extended to the
next Business Day on which the SEC is open for business; provided, further, however, that any Additional Effectiveness Deadline shall not be less than one (1) Business Day following the Company’s receipt of approval of Legal Counsel. 

(mm) “Subsequent Filing Date” means the date on which a Subsequent Registration Statement is filed with the SEC. 

(nn) “Subsequent Filing Deadline” means the date which is ninety (90) calendar days after the later of (i) the date
the Company issues the Warrants to the Buyers pursuant to the terms of the Securities Purchase Agreement and (ii) the earliest of (x) the date on which one or more Additional Closings under the Securities Purchase Agreement resulted in the
purchase of Additional Notes with an aggregate principal amount of not less than $50,000,000, (y) the date on which all of the Buyers shall have indicated in writing to the Company that they no longer intend to purchase any Additional Notes and
(z) the date that is five (5) Business Days after the Company files a registration statement with respect to the Rights Offering (as defined in the Securities Purchase Agreement), if any. 

(oo) “Subsequent Registrable Securities” means (i) the Conversion Shares issued or issuable pursuant to the terms of any
Additional Notes to the extent not included in the Initial Registration Statement, (ii) the Warrant Shares issued or issuable upon exercise of the Warrants to the extent not included in the Initial Registration Statement and (iii) any
capital stock of the Company issued or issuable with respect to such Additional Notes, the Conversion Shares with respect to such Additional Notes, such Warrants or the Warrant Shares with respect to such Warrants as a result of any stock split,
stock dividend, recapitalization, exchange or similar event or otherwise to the extent not included in the Initial Registration Statement, in each case without regard to any limitations on the issuance of Common Stock pursuant to the terms of the
Notes or exercise of the Warrants. 
 (pp) “Subsequent Registration Statement” means a registration statement or
registration statements of the Company filed under the 1933 Act covering the resale of the Subsequent Registrable Securities. 
 (qq)
“Subsequent Required Registration Amount” means the sum of (i) (x) the number of Conversion Shares issued pursuant to the Notes prior to the Subsequent Filing Date to the extent not previously included in the Initial
Registration Statement and (y) 130% of the maximum number of Conversion Shares issuable pursuant to any Notes issued prior to the Subsequent Filing Date to the extent not included in the Initial Registration Statement, and based on the Conversion
Rate in effect as of the Subsequent Filing Date, without regard to any limitations on the issuance of Common Stock pursuant to the terms of the Notes, (ii) the maximum number of Warrant Shares issued and issuable pursuant to the Warrants to the
extent not included in the Initial Registration Statement, without regard to any limitations on the issuance of Common Stock pursuant to the terms of the Warrants and (iii) (x) the number of Interest Shares issued pursuant to the Notes
prior to the Subsequent Filing Date to the extent not included in the Initial Registration Statement and (y) 130% of the maximum number of remaining shares issuable as Interest Shares issued prior to the Subsequent Filing Date to the

  
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extent not included in the Initial Registration Statement, assuming all remaining Interest through the Maturity Date is paid in Interest Shares at the maximum possible Interest Rate, without
regard to any limitations on the issuance of Common Stock pursuant to the terms of the Notes, in each case as of the Trading Day immediately preceding the Subsequent Filing Date or any other applicable date of determination. 

(rr) “Trading Day” means any day on which the Common Stock is traded on the Principal Market, or, if the Principal Market is
not the principal trading market for the Common Stock, then on the principal national securities exchange or securities market on which the Common Stock is then traded; provided that “Trading Day” shall not include any day on which the
Common Stock is scheduled to trade on such exchange or market for less than 4.5 hours or any day that the Common Stock is suspended from trading during the final hour of trading on such exchange or market (or if such exchange or market does not
designate in advance the closing time of trading on such exchange or market, then during the hour ending at 4:00:00 p.m., New York time). 

2. Registration. 
 (a)
Initial Mandatory Registration. The Company shall prepare, and, as soon as practicable but in no event later than the Initial Filing Deadline, file with the SEC the Initial Registration Statement on an applicable form, covering the resale of
all of the Initial Registrable Securities. The Initial Registration Statement prepared pursuant hereto shall register for resale at least the number of shares of Common Stock equal to the Initial Required Registration Amount determined as of the
date the Initial Registration Statement is initially filed with the SEC. The Initial Registration Statement shall contain (except if otherwise required pursuant to written comments received from the SEC upon a review of the Initial Registration
Statement or if otherwise directed by the Required Holders) the “Plan of Distribution” and “Selling Shareholders” sections in substantially the form attached hereto as Exhibit A. The Company shall use
commercially reasonable efforts to have the Initial Registration Statement declared effective by the SEC as soon as practicable, but in no event later than the Initial Effectiveness Deadline. By 9:30 a.m. New York time on the second Business Day
following the Initial Effective Date, the Company shall file with the SEC in accordance with Rule 424 under the 1933 Act the final prospectus which may be used in connection with sales pursuant to such Initial Registration Statement. 

(b) Subsequent Mandatory Registration. In the event (i) one or more Additional Closings shall occur on or after the Initial Filing
Date and/or (ii) the Warrants are issued on or after the Initial Filing Date, the Company shall prepare, and, as soon as practicable but in no event later than the Subsequent Filing Deadline, file with the SEC the Subsequent Registration
Statement covering the resale of all of the Subsequent Registrable Securities. The Subsequent Registration Statement prepared pursuant hereto shall register for resale at least the number of shares of Common Stock equal to the Subsequent Required
Registration Amount determined as of the date the Subsequent Registration Statement is initially filed with the SEC. The Subsequent Registration Statement shall contain (except if otherwise required pursuant to written comments received from the SEC
upon a review of such Subsequent Registration Statement or if directed by the Required Holders) the “Plan of Distribution” and “Selling Shareholders” sections in substantially the form attached hereto as Exhibit A. The
Company 

  
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shall use commercially reasonable efforts to have the Subsequent Registration Statement declared effective by the SEC as soon as practicable, but in no event later than the Subsequent
Effectiveness Deadline. By 9:30 a.m. New York time on the second Business Day following the Subsequent Effective Date, the Company shall file with the SEC in accordance with Rule 424 under the 1933 Act the final prospectus which may be used in
connection with sales pursuant to such Subsequent Registration Statement. 
 (c) Additional Mandatory Registrations. The Company
shall prepare, and, as soon as practicable but in no event later than the Additional Filing Deadline, file with the SEC an Additional Registration Statement covering the resale of all of the Additional Registrable Securities not previously
registered on an Additional Registration Statement. To the extent the staff of the SEC does not permit the Additional Required Registration Amount to be registered on an Additional Registration Statement, the Company shall file, no later than the
Additional Filing Deadline, Additional Registration Statements successively trying to register on each such Additional Registration Statement the maximum number of remaining Additional Registrable Securities until the Additional Required
Registration Amount has been registered with the SEC. Each Additional Registration Statement shall register for resale at least that number of shares of Common Stock equal to the Additional Required Registration Amount determined as of the date such
Additional Registration Statement is initially filed with the SEC. Each Additional Registration Statement shall contain (except if otherwise required pursuant to written comments received from the SEC upon a review of such Additional Registration
Statement or if otherwise directed by the Required Holders) the “Plan of Distribution” and “Selling Shareholders” sections in substantially the form attached hereto as Exhibit A. The Company shall use
commercially reasonable efforts to have each Additional Registration Statement declared effective by the SEC as soon as practicable, but in no event later than the Additional Effectiveness Deadline. By 9:30 a.m. New York time on the second Business
Day following the Additional Effective Date, the Company shall file with the SEC in accordance with Rule 424 under the 1933 Act the final prospectus to be used in connection with sales pursuant to such Additional Registration Statement. 

(d) Allocation of Registrable Securities. The initial number of Registrable Securities included in any Registration Statement and any
increase or decrease in the number of Registrable Securities included therein shall be allocated pro rata among the Investors based on the number of Registrable Securities held by each Investor at the time the applicable Registration Statement
covering such initial number of Registrable Securities or increase or decrease thereof is initially filed with the SEC. In the event that an Investor sells or otherwise transfers any of such Investor’s Registrable Securities, each transferee
shall be allocated a pro rata portion of the then remaining number of Registrable Securities included in such Registration Statement for such transferor. Any shares of Common Stock included in a Registration Statement and which remain allocated to
any Person who ceases to hold any Registrable Securities covered by such Registration Statement shall be allocated to the remaining Investors, pro rata based on the number of Registrable Securities then held by such Investors which are covered by
such Registration Statement. In no event shall the Company include any securities other than Registrable Securities on any Registration Statement without the prior written consent of the Required Holders, except the shares of Common Stock required
to be included pursuant to that certain Stockholders Rights Agreement, dated February 11, 2015 by and among comScore, Inc., WPP Group USA, Inc. and Cavendish Square Holding B.V. (the “Other Registrable Securities”). 

  
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 (e) Legal Counsel. Subject to Section 5 hereof, the Required Holders shall have the
right to select one legal counsel to review and oversee any registration pursuant to this Section 2 (“Legal Counsel”), which shall be Schulte Roth & Zabel LLP or such other counsel as thereafter designated by the
Required Holders. The Company and Legal Counsel shall reasonably cooperate with each other in performing the Company’s obligations under this Agreement. 

(f) Ineligibility for Form S-3. In the event that Form
S-3 is not available for the registration of the resale of Registrable Securities hereunder, the Company shall (i) register the resale of the Registrable Securities on Form
S-1 or another appropriate form available to the Company for the registration of the resale of Registrable Securities hereunder and (ii) undertake to register the Registrable Securities on Form S-3 promptly after such form is available, provided that the Company shall maintain the effectiveness of the Registration Statement then in effect until such time as a Registration Statement on Form S-3 covering the Registrable Securities has been declared effective by the SEC. 
 (g) Sufficient
Number of Shares Registered. In the event the number of shares available under a Registration Statement filed pursuant to Section 2(a), Section 2(b) or Section 2(c) is insufficient to cover the Required Registration Amount of
Registrable Securities required to be covered by such Registration Statement or an Investor’s allocated portion of the Registrable Securities pursuant to Section 2(d), the Company shall amend the applicable Registration Statement (if
permissible), or file a new Registration Statement (on the short form available therefor, if applicable), or both, so as to cover at least the Required Registration Amount as of the Trading Day immediately preceding the date of the filing of such
amendment or new Registration Statement, in each case, as soon as practicable, but in any event not later than twenty (20) Business Days after the necessity therefor arises (but taking into account any position of the staff of the SEC with
respect to the date on which the staff of the SEC will permit such amendment to the Registration Statement and/or such new Registration Statement (as the case may be) to be filed with the SEC). The Company shall use commercially reasonable efforts
to cause such amendment and/or new Registration Statement to become effective as soon as practicable following the filing thereof. For purposes of the foregoing provision, the number of shares available under a Registration Statement shall be deemed
“insufficient to cover all of the Registrable Securities” if at any time the number of shares of Common Stock available for resale under the Registration Statement is less than the Required Registration Amount. The calculation set forth in
the foregoing sentence shall be made without regard to any limitations on the issuance of Common Stock pursuant to the terms of the Notes or exercise of the Warrants and such calculation shall assume (i) that the then-outstanding and not
converted Notes are then convertible in full into shares of Common Stock at the then prevailing Conversion Rate (as defined in the Notes) (ii) the then-outstanding principal amount of the Notes remains outstanding through the scheduled Maturity
Date (as defined in the Notes) and no redemptions of the Notes occur prior to the scheduled Maturity Date and (iii) the Warrants are then exercisable in full into shares of Common Stock at the then prevailing Exercise Price (as defined in the
Warrants). 

  
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 (h) Effect of Failure to File and Obtain and Maintain Effectiveness of Registration
Statement. If (i) (A) the Initial Registration Statement when declared effective fails to register the Initial Required Registration Amount of Initial Registrable Securities or (B) the Subsequent Registration Statement when declared
effective fails to register the Subsequent Required Registration Amount of Subsequent Registrable Securities (a “Registration Failure”), (ii) a Registration Statement covering all of the Registrable Securities required to be covered
thereby and required to be filed by the Company pursuant to this Agreement is (A) not filed with the SEC on or before the applicable Filing Deadline (a “Filing Failure”) or (B) not declared effective by the SEC on or
before the applicable Effectiveness Deadline (an “Effectiveness Failure”), or (iii) on any day after the applicable Effective Date, sales of all of the Registrable Securities required to be included on such Registration
Statement cannot be made (other than during an Allowable Grace Period (as defined in Section 3(r)) pursuant to such Registration Statement or otherwise (including, without limitation, because of the suspension of trading or any other limitation
imposed by the Principal Market, a failure to keep such Registration Statement effective, a failure to disclose such information as is necessary for sales to be made pursuant to such Registration Statement, or a failure to register a sufficient
number of shares of Common Stock (a “Maintenance Failure”) then, as partial relief for the damages to any holder by reason of any such delay in or reduction of its ability to sell the underlying shares of Common Stock (which remedy
shall not be exclusive of any other remedies available at law or in equity, including, without limitation, specific performance or the additional obligation of the Company to register any Cutback Shares), the Company shall pay to each holder of
Registrable Securities relating to such Registration Statement an amount in cash equal to one percent (1.0%) of the then-applicable aggregate Conversion Amount (as such term is defined in the Notes) of such Investor’s Registrable Securities,
whether or not included in such Registration Statement, on each of the following dates: (i) the one hundred twenty first (121st) day after a Registration Failure, (ii) the one hundred
twenty first (121st) day after a Filing Failure; (iii) the one hundred twenty first (121st) day after an Effectiveness Failure;
(iv) the one hundred twenty first (121st) day after the initial day of a Maintenance Failure; (v) on the one hundred fifty first
(151st) day after the date of a Registration Failure and every thirtieth day thereafter (in each case prorated for periods totaling less than thirty days) until such Registration Failure is cured;
(vi) on the one hundred fifty first (151st) day after the date of a Filing Failure and every thirtieth day thereafter (in each case prorated for periods totaling less than thirty days) until
such Filing Failure is cured; (vii) on the one hundred fifty first (151st) day after the date of an Effectiveness Failure and every thirtieth day thereafter (in each case prorated for periods
totaling less than thirty days) until such Effectiveness Failure is cured; and (viii) on the one hundred fifty first (151st) day after the initial date of a Maintenance Failure and every
thirtieth day thereafter (in each case prorated for periods totaling less than thirty days) until such Maintenance Failure is cured. The payments to which a holder shall be entitled pursuant to this Section 2(h) are referred to herein as
“Registration Delay Payments.” Registration Delay Payments shall be paid on the earlier of (I) the dates set forth above and (II) the third Business Day after the event or failure giving rise to the Registration Delay
Payment is cured. In the event the Company fails to make a Registration Delay Payment in a timely manner, such Registration Delay Payment shall bear interest at the rate of one and one-half percent (1.5%) per
month (prorated for partial months) until paid in full. Notwithstanding anything herein to the contrary, in no event shall the aggregate amount of Registration Delay Payments exceed, in the aggregate, 3% of the aggregate principal amount of the
Notes outstanding for any thirty (30) day period as determined on the last day of such thirty 

  
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(30) day period. Notwithstanding anything herein to the contrary, the Company shall not be obligated to pay any Registration Delay Payments with respect to any Registration Failure, Filing
Failure, Effectiveness Failure or Maintenance Failure to an Investor resulting solely from a failure of such Investor to perform its obligations under this Agreement, including, without limitation, the failure to provide, after timely written
request by the Company, information necessary for inclusion in a Registration Statement to the Company pursuant to the terms of this Agreement. For the avoidance of doubt, in no event shall a Registration Failure, Filing Failure, Effectiveness
Failure or Maintenance Failure be deemed to arise as a result of, but solely to the extent of, a limitation on the maximum number of shares of Common Stock of the Company permitted to be registered by the staff of the SEC pursuant to Rule 415;
provided, however, that the Company shall have used commercially reasonable efforts to have removed such limitation. 
 3. Related
Obligations. 
 At such time as the Company is obligated to file a Registration Statement with the SEC pursuant to Section 2(a),
2(b), 2(c), 2(f) or 2(g), the Company will use its commercially reasonable efforts to effect the registration of the Registrable Securities in accordance with the intended method of disposition thereof and, pursuant thereto, the Company shall have
the following obligations: 
 (a) The Company shall promptly prepare and file with the SEC a Registration Statement with respect to the
Registrable Securities and use commercially reasonable efforts to cause such Registration Statement relating to the Registrable Securities to become effective as soon as practicable after such filing (but in no event later than the Effectiveness
Deadline). Subject to Allowable Grace Periods (as defined in Section 3(f), the Company shall keep each Registration Statement effective pursuant to Rule 415 at all times until the earlier of (i) the date as of which the Investors may sell
all of the Registrable Securities covered by such Registration Statement without restriction or limitation pursuant to Rule 144 and without the requirement to be in compliance with Rule 144(c)(1) (or any successor thereto) promulgated under the 1933
Act or (ii) the date on which the Investors shall have sold all of the Registrable Securities covered by such Registration Statement (the “Registration Period”). The Company shall ensure that each Registration Statement
(including any amendments or supplements thereto and prospectuses contained therein) shall not contain any 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 (in the case of prospectuses, in the light of the circumstances in which they were made) not misleading. The Company shall use commercially reasonable efforts to respond in writing to comments made by the SEC in respect of a Registration
Statement not later than fifteen (15) days after the receipt of comments by or notice from the SEC that an amendment is required in order for a Registration Statement to be declared effective. 

(b) The Company shall prepare and file with the SEC such amendments (including post-effective amendments) and supplements to a Registration
Statement and the prospectus used in connection with such Registration Statement, which prospectus is to be filed pursuant to Rule 424 promulgated under the 1933 Act, as may be necessary to keep such Registration Statement effective at all times
during the Registration Period (subject to Allowable Grace Periods), and, during such period, comply with the provisions of the 1933 Act with respect to the disposition of all Registrable Securities of the Company covered by such Registration

  
 11 

 
Statement until such time as all of such Registrable Securities shall have been disposed of by the seller or sellers thereof as set forth in such Registration Statement. In the case of amendments
and supplements to a Registration Statement which are required to be filed pursuant to this Agreement (including pursuant to this Section 3(b)) by reason of the Company filing a report on Form 10-K, Form 10-Q, Form 8-K or any analogous report under the Securities Exchange Act of 1934 (the “1934 Act”), the Company shall incorporate such report by reference into
such Registration Statement, if applicable, or shall file such amendments or supplements with the SEC on the same day on which the 1934 Act report is filed which created the requirement for the Company to amend or supplement such Registration
Statement. 
 (c) The Company shall (A) permit Legal Counsel to review and comment upon (i) a Registration Statement at least
three (3) Business Days prior to its filing with the SEC and (ii) all amendments and supplements to all Registration Statements (except for Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and any similar or successor reports) within a reasonable number of days prior to their filing with the SEC, and (B) not file any
Registration Statement or amendment or supplement thereto in a form to which Legal Counsel reasonably objects in writing. The Company shall not submit a request for acceleration of the effectiveness of a Registration Statement or any amendment or
supplement thereto without the prior approval of Legal Counsel, which consent shall not be unreasonably withheld. The Company shall furnish to Legal Counsel, without charge, (i) copies of any correspondence from the SEC or the staff of the SEC
to the Company or its representatives relating to any Registration Statement, (ii) promptly after the same is prepared and filed with the SEC, one copy of any Registration Statement and any amendment(s) thereto, including financial statements
and schedules, all documents incorporated therein by reference (to the extent not previously provided), if requested by an Investor, and all exhibits, which copies may be furnished in electronic form, and (iii) upon the effectiveness of any
Registration Statement, one copy of the prospectus included in such Registration Statement and all amendments and supplements thereto, which copy may be in electronic form. The Company and Legal Counsel shall reasonably cooperate in performing their
respective obligations pursuant to this Section 3. 
 (d) The Company shall furnish to each Investor whose Registrable Securities are
included in any Registration Statement, without charge, (i) promptly after the same is prepared and filed with the SEC, at least one copy of such Registration Statement and any amendment(s) thereto, including financial statements and schedules,
all documents incorporated therein by reference (to the extent not previously provided), if requested by an Investor, all exhibits and each preliminary prospectus, which copies may be furnished in electronic form, (ii) upon the effectiveness of
any Registration Statement, ten (10) copies of the prospectus included in such Registration Statement and all amendments and supplements thereto (or such other number of copies as such Investor may reasonably request) and (iii) such other
documents, including copies of any preliminary or final prospectus, as such Investor may reasonably request from time to time in order to facilitate the disposition of the Registrable Securities owned by such Investor, which copies may be furnished
in electronic form. 

  
 12 

 (e) The Company shall use commercially reasonable efforts to (i) register and qualify,
unless an exemption from registration and qualification applies, the resale by Investors of the Registrable Securities covered by a Registration Statement under such other securities or “blue sky” laws of all applicable jurisdictions in
the United States, (ii) prepare and file in those jurisdictions such amendments (including post-effective amendments) and supplements to such registrations and qualifications as may be necessary to maintain the effectiveness thereof during the
Registration Period (subject to Allowable Grace Periods), (iii) take such other actions as may be necessary to maintain such registrations and qualifications in effect at all times during the Registration Period (subject to Allowable Grace
Periods), and (iv) take all other actions reasonably necessary or advisable to qualify the Registrable Securities for sale in such jurisdictions; provided, however, that the Company shall not be required in connection therewith or as a
condition thereto to (x) qualify to do business in any jurisdiction where it would not otherwise be required to qualify but for this Section 3(e), (y) subject itself to general taxation in any such jurisdiction, or (z) file a general
consent to service of process in any such jurisdiction. The Company shall promptly notify Legal Counsel of the receipt by the Company of any notification with respect to the suspension of the registration or qualification of any of the Registrable
Securities for sale under the securities or “blue sky” laws of any jurisdiction in the United States or its receipt of actual notice of the initiation or threatening of any proceeding for such purpose. 

(f) The Company shall notify Legal Counsel and each Investor in writing of the happening of any event as promptly as practicable after
becoming aware of such event, as a result of which the prospectus included in a Registration Statement, as then in effect, includes an untrue statement of a material fact or omission to state a material fact required to be stated therein or
necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading (provided that in no event shall such notice contain any material, nonpublic information), and, subject to Section 3(r),
promptly prepare a supplement or amendment to such Registration Statement to correct such untrue statement or omission, and deliver ten (10) copies of such supplement or amendment to Legal Counsel and each Investor (or such other number of
copies as Legal Counsel or such Investor may reasonably request). The Company shall also promptly notify Legal Counsel and each Investor in writing (i) when a prospectus or any prospectus supplement or post-effective amendment has been filed,
and when a Registration Statement or any post-effective amendment has become effective (notification of such filing of effectiveness, as the case may be, shall be delivered by facsimile or email on the same day of such effectiveness and by overnight
mail), (ii) of any request by the SEC for amendments or supplements to a Registration Statement or related prospectus or related information, and (iii) of the Company’s reasonable determination that a post-effective amendment to a
Registration Statement would be appropriate. By 9:30 a.m. New York City time on the second Business Day following the date any post-effective amendment has become effective, the Company shall file with the SEC in accordance with Rule 424 under the
1933 Act the final prospectus to be used in connection with sales pursuant to such Registration Statement. 
 (g) The Company shall use
commercially reasonable efforts to prevent the issuance of any stop order or other suspension of effectiveness of a Registration Statement, or the suspension of the qualification of any of the Registrable Securities for sale in any jurisdiction and,
if such an order or suspension is issued, to obtain the withdrawal of such order or suspension at the earliest possible moment and to notify Legal Counsel of the issuance of such order and the resolution thereof or its receipt of actual notice of
the initiation or threat of any proceeding for such purpose. 

  
 13 

 (h) If any Investor is required under applicable securities laws to be described in the
Registration Statement as an underwriter or an Investor reasonably believes that it could be deemed to be an underwriter of Registrable Securities, at the reasonable request of such Investor, the Company shall furnish to such Investor, on the date
of the effectiveness of the Registration Statement and thereafter from time to time on such dates as an Investor may reasonably request (i) a letter, dated such date, from the Company’s independent certified public accountants in form and
substance as is customarily given by independent certified public accountants to underwriters in an underwritten public offering, addressed to the Investors, and (ii) an opinion, dated as of such date, of counsel representing the Company for
purposes of such Registration Statement, in form, scope and substance as is customarily given in an underwritten public offering, addressed to the Investors. 

(i) If any Investor is required under applicable securities laws to be described in the Registration Statement as an underwriter or an
Investor reasonably believes that it could be deemed to be an underwriter of Registrable Securities, the Company shall make available for inspection by (i) such Investor, (ii) Legal Counsel and (iii) one firm of accountants or other
agents retained by the Investors (collectively, the “Inspectors”), all pertinent financial and other records, and pertinent corporate documents and properties of the Company (collectively, the “Records”), as shall
be reasonably deemed necessary by each Inspector, and cause the Company’s officers, directors and employees to supply all information which any Inspector may reasonably request; provided, however, that each Inspector shall agree in writing to
hold in strict confidence and shall not make any disclosure (except to an Investor) or use of any Record or other information which the Company determines in good faith to be confidential, and of which determination the Inspectors are so notified,
unless (a) the disclosure of such Records is necessary to avoid or correct a misstatement or omission in any Registration Statement or is otherwise required under the 1933 Act, (b) the release of such Records is ordered pursuant to a
final, non-appealable subpoena or order from a court or government body of competent jurisdiction, or (c) the information in such Records has been made generally available to the public other than by
disclosure in violation of this Agreement. Each Investor agrees that it shall, upon learning that disclosure of such Records is sought in or by a court or governmental body of competent jurisdiction or through other means, give prompt notice to the
Company and allow the Company, at its expense, to undertake appropriate action to prevent disclosure of, or to obtain a protective order for, the Records deemed confidential. Nothing herein (or in any other confidentiality agreement between the
Company and any Investor) shall be deemed to limit the Investors’ ability to sell Registrable Securities in a manner which is otherwise consistent with applicable laws and regulations. 

(j) The Company shall hold in confidence and not make any disclosure of information concerning an Investor provided to the Company unless
(i) disclosure of such information is necessary to comply with federal or state securities laws, (ii) the disclosure of such information is necessary to avoid or correct a misstatement or omission in any Registration Statement,
(iii) the release of such information is ordered pursuant to a subpoena or other final, non-appealable order from a court or governmental body of competent jurisdiction, or (iv) such information has
been made generally available to the public other than by disclosure in violation of this Agreement or any other agreement. The Company agrees that it shall, upon learning that disclosure of such information concerning an Investor is sought in or by
a court or governmental body of competent jurisdiction or through other means, give prompt written notice to such Investor and allow such Investor, at the Investor’s expense, to undertake appropriate action to prevent disclosure of, or to
obtain a protective order for, such information. 

  
 14 

 (k) The Company shall use commercially reasonable efforts either to (i) cause all of the
Registrable Securities covered by a Registration Statement to be listed on each securities exchange on which securities of the same class or series issued by the Company are then listed, if any, if the listing of such Registrable Securities is then
permitted under the rules of such exchange or (ii) secure the inclusion for quotation of all of the Registrable Securities on the Principal Market or (iii) if, despite the Company’s commercially reasonable efforts, the Company is
unsuccessful in satisfying the preceding clauses (i) and (ii), to secure the inclusion for quotation on another Eligible Market for such Registrable Securities and, without limiting the generality of the foregoing, to use its commercially
reasonable efforts to arrange for at least two market makers to register with the Financial Industry Regulatory Authority, Inc. (“FINRA”) as such with respect to such Registrable Securities. The Company shall pay all fees and
expenses in connection with satisfying its obligation under this Section 3(k). 
 (l) The Company shall cooperate with the Investors
who hold Registrable Securities being offered and, to the extent applicable, facilitate the timely preparation and delivery of certificates (not bearing any restrictive legend) representing the Registrable Securities to be offered pursuant to a
Registration Statement and enable such certificates to be in such denominations or amounts, as the case may be, as the Investors may reasonably request and registered in such names as the Investors may request. 

(m) If requested by an Investor, the Company shall as soon as practicable but subject to the timing requirements set out elsewhere in this
Agreement with regard to the filing of any prospectus supplement or post-effective amendment, as applicable (i) incorporate in a prospectus supplement or post-effective amendment such information as an Investor reasonably requests to be
included therein relating to the sale and distribution of Registrable Securities, including, without limitation, information with respect to the number of Registrable Securities being offered or sold, the purchase price being paid therefor and any
other terms of the offering of the Registrable Securities to be sold in such offering; (ii) make all required filings of such prospectus supplement or post-effective amendment after being notified of the matters to be incorporated in such
prospectus supplement or post-effective amendment; and (iii) supplement or make amendments to any Registration Statement if reasonably requested by an Investor holding any Registrable Securities. 

(n) The Company shall use commercially reasonable efforts to cause the Registrable Securities covered by a Registration Statement to be
registered with or approved by such other governmental agencies or authorities as may be necessary to consummate the disposition of such Registrable Securities. 

(o) The Company shall make generally available to its security holders as soon as practical, but not later than ninety (90) days after
the close of the period covered thereby, an earnings statement (in form complying with, and in the manner provided by, the provisions of Rule 158 under the 1933 Act) covering a twelve-month period beginning not later than the first day of the
Company’s fiscal quarter next following the applicable Effective Date of a Registration Statement. 

  
 15 

 (p) The Company shall otherwise use commercially reasonable efforts to comply with all
applicable rules and regulations of the SEC in connection with any registration hereunder. 
 (q) Within two (2) Business Days after a
Registration Statement which covers Registrable Securities is declared effective by the SEC, the Company shall deliver, and shall cause legal counsel for the Company to deliver, to the transfer agent for such Registrable Securities (with copies to
the Investors whose Registrable Securities are included in such Registration Statement) confirmation that such Registration Statement has been declared effective by the SEC in form and substance reasonably satisfactory to the transfer agent. 

(r) Notwithstanding anything to the contrary herein, at any time after the Effective Date, the Company may delay the disclosure of material, non-public information concerning the Company the disclosure of which at the time is not, in the good faith opinion of the Board of Directors of the Company and its counsel, in the best interest of the Company and,
in the opinion of counsel to the Company, otherwise required (a “Grace Period”); provided, that the Company shall promptly (i) notify the Investors in writing of the existence of material,
non-public information giving rise to a Grace Period (provided that in each notice the Company will not disclose the content of such material, non-public information to
the Investors) and the date on which the Grace Period will begin, and (ii) notify the Investors in writing of the date on which the Grace Period will end; and, provided further, that no Grace Period shall exceed ten (10) consecutive
Trading Days and during any three hundred sixty five (365) day period such Grace Periods shall not exceed an aggregate of thirty (30) Trading Days and the first day of any Grace Period must be at least five (5) Trading Days after the
last day of any prior Grace Period (each, an “Allowable Grace Period”). For purposes of determining the length of a Grace Period above, the Grace Period shall begin on and include the date the Investors receive the notice referred
to in clause (i) and shall end on and include the later of the date the Investors receive the notice referred to in clause (ii) and the date referred to in such notice. The provisions of Section 3(g) hereof shall not be applicable
during the period of any Allowable Grace Period. Upon expiration of the Grace Period, the Company shall again be bound by the first sentence of Section 3(f) with respect to the information giving rise thereto unless such material, non-public information is no longer applicable. Notwithstanding anything to the contrary, the Company shall use commercially reasonable efforts to cause its transfer agent to deliver unlegended shares of Common
Stock to a transferee of an Investor in accordance with the terms of the Securities Purchase Agreement in connection with any sale of Registrable Securities with respect to which an Investor has entered into a contract for sale, prior to the
Investor’s receipt of the notice of a Grace Period and for which the Investor has not yet settled. 
 (s) Neither the Company nor any
Subsidiary or affiliate thereof shall identify any Investor as an underwriter in any public disclosure or filing with the SEC, the Principal Market or any Eligible Market without such Investor’s prior written consent and any Investor being
deemed an underwriter by the SEC shall not relieve the Company of any obligations it has under this Agreement or any other Transaction Document (as defined in the Securities Purchase Agreement); provided, however, that the foregoing
shall not prohibit the Company from including the disclosure in the form set out in the “Plan of Distribution” section attached hereto as Exhibit A in the Registration Statement. In the event that the staff of the SEC requires any
Investor seeking to sell securities under a Registration Statement filed pursuant to 

  
 16 

 
this Agreement to be specifically identified as an “underwriter” in order to permit such Registration Statement to become effective, and such Investor does not consent in writing to
being so named as an underwriter in such Registration Statement, then, in each such case, the Company shall reduce the total number of Registrable Securities to be registered on behalf of such Investor, until such time as the staff of the SEC does
not require such identification (which may result in none of the Registrable Securities to be registered on behalf of such Investor being included in such Registration Statement) or until such Investor accepts in writing such identification and the
manner thereof. 
 (t) Neither the Company nor any of its Subsidiaries has entered, as of the date hereof, nor shall the Company or any of
its Subsidiaries, on or after the date of this Agreement and for so long as the same is in effect, enter into any agreement with respect to its securities, that would have the effect of impairing the rights granted to the Buyers in this Agreement or
otherwise conflicts with the provisions hereof. 
 4. Obligations of the Investors. 

(a) At least three (3) Business Days prior to the first anticipated Filing Date of a Registration Statement, the Company shall notify
each Investor in writing of the information the Company requires from each such Investor if such Investor elects to have any of such Investor’s Registrable Securities included in such Registration Statement. It shall be a condition precedent to
the obligations of the Company to complete any registration pursuant to this Agreement with respect to the Registrable Securities of a particular Investor that such Investor shall furnish to the Company such information regarding itself, the
Registrable Securities held by it and the intended method of disposition of the Registrable Securities held by it as shall be reasonably required to effect and maintain the effectiveness of the registration of such Registrable Securities and shall
execute such documents in connection with such registration as the Company may reasonably request. 
 (b) Each Investor, by such
Investor’s acceptance of the Registrable Securities, agrees to cooperate with the Company as reasonably requested by the Company in connection with the preparation and filing of any Registration Statement hereunder, unless such Investor has
notified the Company in writing of such Investor’s election to exclude all of such Investor’s Registrable Securities from such Registration Statement. 

(c) Each Investor agrees that, upon receipt of any notice from the Company of the happening of any event of the kind described in
Section 3(g) or the first sentence of Section 3(f), such Investor will immediately discontinue disposition of Registrable Securities pursuant to any Registration Statement(s) covering such Registrable Securities until such Investor’s
receipt of copies of the supplemented or amended prospectus as contemplated by Section 3(g) or the first sentence of Section 3(f) or receipt of notice that no supplement or amendment is required. Notwithstanding anything to the contrary,
the Company shall use commercially reasonable efforts to cause its transfer agent to deliver unlegended shares of Common Stock to a transferee of an Investor in accordance with the terms of the Securities Purchase Agreement in connection with any
sale of Registrable Securities with respect to which an Investor has entered into a contract for sale prior to the Investor’s receipt of a notice from the Company of the happening of any event of the kind described in Section 3(g) or the
first sentence of Section 3(f) and for which the Investor has not yet settled. 

  
 17 

 (d) Each Investor covenants and agrees that it will comply with the prospectus delivery
requirements of the 1933 Act as applicable to it or an exemption therefrom in connection with sales of Registrable Securities pursuant to the Registration Statement. 

5. Expenses of Registration. 

All reasonable expenses, other than underwriting discounts and commissions, incurred in connection with registrations, filings or
qualifications pursuant to Sections 2 and 3, including, without limitation, all registration, listing and qualifications fees, printers and accounting fees, and fees and disbursements of counsel for the Company shall be paid by the Company. The
Company shall also reimburse the Investors for the reasonable and actual fees and disbursements of Legal Counsel in connection with the registration, filing or qualification pursuant to Sections 2 and 3 of this Agreement which amount shall be
limited to $10,000 for each such registration, filing or qualification; provided, however, that any such reimbursements shall be considered with all other fees, expenses and reimbursements paid or payable under Section 4(g) of the Securities
Purchase Agreement and shall be subject to the limitations set forth therein. 
 6. Indemnification. 

In the event any Registrable Securities are included in a Registration Statement under this Agreement: 

(a) To the fullest extent permitted by law, the Company will, and hereby does, indemnify, hold harmless and defend each Investor, the
directors, officers, partners, members, employees, agents, representatives of, and each Person, if any, who controls any Investor within the meaning of the 1933 Act or the 1934 Act (each, an “Indemnified Person”), against any
losses, claims, damages, liabilities, judgments, fines, penalties, charges, costs, reasonable attorneys’ fees, amounts paid in settlement or expenses, joint or several (collectively, “Claims”), incurred in investigating,
preparing or defending any action, claim, suit, inquiry, proceeding, investigation or appeal taken from the foregoing by or before any court or governmental, administrative or other regulatory agency, body or the SEC, whether pending or threatened,
whether or not an Indemnified party is or may be a party thereto (“Indemnified Damages”), to which any of them may become subject insofar as such Claims (or actions or proceedings, whether commenced or threatened, in respect
thereof) arise out of or are based upon: (i) any untrue statement or alleged untrue statement of a material fact in a Registration Statement or any post-effective amendment thereto or in any filing made in connection with the qualification of
the offering under the securities or other “blue sky” laws of any jurisdiction in which Registrable Securities are offered (“Blue Sky Filing”), or the omission or alleged omission to state a material fact required to be
stated therein or necessary to make the statements therein not misleading, (ii) any untrue statement or alleged untrue statement of a material fact contained in any preliminary prospectus if used prior to the effective date of such Registration
Statement, or contained in the final prospectus (as amended or supplemented, if the Company files any amendment thereof or supplement thereto with the SEC) or the omission or alleged 

  
 18 

 
omission to state therein any material fact necessary to make the statements made therein, in light of the circumstances under which the statements therein were made, not misleading,
(iii) any violation or alleged violation by the Company of the 1933 Act, the 1934 Act, any other law, including, without limitation, any state securities law, or any rule or regulation thereunder relating to the offer or sale of the Registrable
Securities pursuant to a Registration Statement or (iv) any violation of this Agreement (the matters in the foregoing clauses (i) through (iv) being, collectively, “Violations”). Notwithstanding anything to the contrary
contained herein, the indemnification agreement contained in this Section 6(a): (i) shall not apply to a Claim by an Indemnified Person: (x) arising out of or based upon a Violation which occurs in reliance upon and in conformity with
information furnished in writing to the Company by such Indemnified Person with respect to such Indemnified Person expressly for use in connection with the preparation of the Registration Statement or any such amendment thereof or supplement
thereto, (y) solely arising out of or based upon a violation or alleged violation by such Indemnified Person of the 1933 Act, the 1934 Act, any other law, including, without limitation, any state securities law, or any rule or regulation
thereunder relating to the offer or sale of the Registrable Securities pursuant to a Registration Statement, or (z) solely arising out of or based upon a violation by such Indemnified Person of this Agreement, if such prospectus was timely made
available by the Company pursuant to Section 3(d); and (ii) shall not apply to amounts paid in settlement of any Claim if such settlement is effected without the prior written consent of the Company, which consent shall not be unreasonably
withheld or delayed. Such indemnity shall remain in full force and effect regardless of any investigation made by or on behalf of the Indemnified Person and shall survive the transfer of the Registrable Securities by the Investors pursuant to
Section 9. 
 (b) In connection with any Registration Statement in which an Investor is participating, each such Investor agrees to
severally and not jointly indemnify, hold harmless and defend, to the same extent and in the same manner as is set forth in Section 6(a), the Company, each of its directors, each of its officers, employees, agents, representatives of the
Company and each Person, if any, who controls the Company within the meaning of the 1933 Act or the 1934 Act (each, an “Indemnified Party”), against any Claim or Indemnified Damages to which any of them may become subject, under the
1933 Act, the 1934 Act or otherwise, insofar as such Claim or Indemnified Damages arise out of or are based upon any Violation, in each case to the extent, and only to the extent, that such Violation occurs in reliance upon and in conformity with
written information furnished to the Company by such Investor expressly for use in connection with such Registration Statement; and, subject to Section 6(c), such Investor shall reimburse the Indemnified Party for any legal or other expenses
reasonably incurred by an Indemnified Party in connection with investigating or defending any such Claim; provided, however, that the indemnity agreement contained in this Section 6(b) and the agreement with respect to contribution contained in
Section 7 shall not apply to amounts paid in settlement of any Claim if such settlement is effected without the prior written consent of such Investor, which consent shall not be unreasonably withheld or delayed; provided, further, however,
that the Investor shall be liable under this Section 6(b) for only that amount of a Claim or Indemnified Damages as does not exceed the net proceeds to such Investor as a result of the sale of Registrable Securities pursuant to such
Registration Statement. Such indemnity shall remain in full force and effect regardless of any investigation made by or on behalf of such Indemnified Party and shall survive the transfer of the Registrable Securities by the Investors pursuant to
Section 9. 

  
 19 

 (c) Promptly after receipt by an Indemnified Person or Indemnified Party under this
Section 6 of notice of the commencement of any action or proceeding (including any governmental action or proceeding) involving a Claim, such Indemnified Person or Indemnified Party shall, if a Claim in respect thereof is to be made against any
indemnifying party under this Section 6, deliver to the indemnifying party a written notice of the commencement thereof, and the indemnifying party shall have the right to participate in, and, to the extent the indemnifying party so desires,
jointly with any other indemnifying party similarly noticed, to assume control of the defense thereof with counsel mutually satisfactory to the indemnifying party and the Indemnified Person or the Indemnified Party, as the case may be; provided,
however, that an Indemnified Person or Indemnified Party shall have the right to retain its own counsel with the fees and expenses of not more than one counsel for all such Indemnified Person or Indemnified Party to be paid by the indemnifying
party, if, in the reasonable opinion of counsel retained by the Indemnified Person or Indemnified Party, as applicable, the representation by such counsel of the Indemnified Person or Indemnified Party and the indemnifying party would be
inappropriate due to actual or potential differing interests between such Indemnified Person or Indemnified Party and any other party represented by such counsel in such proceeding. In the case of an Indemnified Person, legal counsel referred to in
the immediately preceding sentence shall be selected by the Investors holding at least a majority in interest of the Registrable Securities included in the Registration Statement to which the Claim relates. The Indemnified Party or Indemnified
Person shall reasonably cooperate with the indemnifying party in connection with any negotiation or defense of any such action or Claim by the indemnifying party and shall furnish to the indemnifying party all information reasonably available to the
Indemnified Party or Indemnified Person which relates to such action or Claim. The indemnifying party shall keep the Indemnified Party or Indemnified Person fully apprised at all times as to the status of the defense or any settlement negotiations
with respect thereto. No indemnifying party shall be liable for any settlement of any action, claim or proceeding effected without its prior written consent, provided, however, that the indemnifying party shall not unreasonably withhold, delay or
condition its consent. No indemnifying party shall, without the prior written consent of the Indemnified Party or Indemnified Person, consent to entry of any judgment or enter into any settlement or other compromise which does not include as an
unconditional term thereof the giving by the claimant or plaintiff to such Indemnified Party or Indemnified Person of a release from all liability in respect to such Claim or litigation and such settlement shall not include any admission as to fault
on the part of the Indemnified Party. Following indemnification as provided for hereunder, the indemnifying party shall be subrogated to all rights of the Indemnified Party or Indemnified Person with respect to all third parties, firms or
corporations relating to the matter for which indemnification has been made. The failure to deliver written notice to the indemnifying party within a reasonable time of the commencement of any such action shall not relieve such indemnifying party of
any liability to the Indemnified Person or Indemnified Party under this Section 6, except to the extent that the indemnifying party is prejudiced in its ability to defend such action. 

(d) The indemnification required by this Section 6 shall be made by periodic payments of the amounts during the course of the
investigation or defense, as and when actual and reasonable bills are received or Indemnified Damages are actually incurred. 
 (e) The
indemnity agreements contained herein shall be in addition to (i) any cause of action or similar right of the Indemnified Party or Indemnified Person against the indemnifying party or others, and (ii) any liabilities the indemnifying party
may be subject to pursuant to the law. 

  
 20 

 7. Contribution. 

To the extent any indemnification by an indemnifying party is prohibited or limited by law, the indemnifying party agrees to make the maximum
contribution with respect to any amounts for which it would otherwise be liable under Section 6 to the fullest extent permitted by law; provided, however, that: (i) no Person involved in the sale of Registrable Securities which Person is
guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the 1933 Act) in connection with such sale shall be entitled to contribution from any Person involved in such sale of Registrable Securities who was not guilty of
fraudulent misrepresentation; and (ii) contribution by any seller of Registrable Securities shall be limited in amount to the amount of net proceeds received by such seller from the sale of such Registrable Securities pursuant to such
Registration Statement. 
 8. Reports Under the 1934 Act. 

With a view to making available to the Investors the benefits of Rule 144 promulgated under the 1933 Act or any other similar rule or
regulation of the SEC that may at any time permit the Investors to sell securities of the Company to the public without registration (“Rule 144”), the Company agrees, from and after the date of the filing of the Form 10-K, to: 
 (a) make and keep public information available, as those terms are understood and defined in
Rule 144; 
 (b) file with the SEC in a timely manner (which includes in reliance on, and after compliance with the deadline required by,
Rule 12b-25 of the 1934 Act) all reports and other documents required of the Company under the 1933 Act and the 1934 Act so long as the Company remains subject to such requirements and the filing of such
reports and other documents is required for the applicable provisions of Rule 144; and 
 (c) furnish to each Investor so long as such
Investor owns Registrable Securities, promptly upon request, (i) a written statement by the Company, if true, that it has complied with the reporting requirements of Rule 144, the 1933 Act and the 1934 Act, (ii) a copy of the most recent
annual or quarterly report of the Company and such other reports and documents so filed by the Company, and (iii) such other information as may be reasonably requested to permit the Investors to sell such securities pursuant to Rule 144 without
registration; provided, however, that the Company shall not be so required if such documents are, or such information is, publicly available on EDGAR. 

9. Assignment of Registration Rights. 

The rights under this Agreement shall be automatically assignable by the Investors to any transferee of all or any portion of such
Investor’s Registrable Securities if: (i) the Investor agrees in writing with the transferee or assignee to the assignment of such rights, and a copy of such agreement is furnished to the Company within a reasonable time after such
assignment; (ii) the Company is, within a reasonable time after such transfer or assignment, 

  
 21 

 
furnished with written notice of (a) the name and address of such transferee or assignee, and (b) the securities with respect to which such registration rights are transferred or
assigned; (iii) immediately following such transfer or assignment the further disposition of such securities by the transferee or assignee is restricted under the 1933 Act or applicable state securities laws; (iv) at or before the time the
Company receives the written notice contemplated by clause (ii) of this sentence the transferee or assignee agrees in writing with the Company to be bound by all of the provisions contained herein; and (v) such transfer shall have been
made in accordance with the applicable requirements of the Securities Purchase Agreement. 
 10. Amendment of Registration Rights.

 Provisions of this Agreement may be amended and the observance thereof may be waived (either generally or in a particular instance and
either retroactively or prospectively), only with the written consent of the Company and the Required Holders. Any amendment or waiver effected in accordance with this Section 10 shall be binding upon each Investor and the Company. No such
amendment shall be effective to the extent that it applies to less than all of the holders of the Registrable Securities. No consideration shall be offered or paid to any Person to amend or consent to a waiver or modification of any provision of
this Agreement unless the same consideration (other than the reimbursement of legal fees) also is offered to all of the parties to this Agreement. 

11. Miscellaneous. 
 (a) A
Person is deemed to be a holder of Registrable Securities whenever such Person owns or is deemed to own of record such Registrable Securities. If the Company receives conflicting instructions, notices or elections from two or more Persons with
respect to the same Registrable Securities, the Company shall act upon the basis of instructions, notice or election received from such record owner of such Registrable Securities. 

(b) Any notices, consents, waivers or other communications required or permitted to be given under the terms of this Agreement must be in
writing and will be deemed to have been delivered: (i) upon receipt, when delivered personally; (ii) upon receipt, when sent by facsimile or electronic mail (provided confirmation of transmission is mechanically or electronically generated
and kept on file by the sending party); or (iii) one Business Day after deposit with a nationally recognized overnight delivery service, in each case properly addressed to the party to receive the same. The addresses, facsimile numbers and
email addresses for such communications shall be: 
 If to the Company: 

comScore, Inc. 
 11950 Democracy
Drive, Suite 600 
 Reston, VA 20190 

Telephone: (703) 234-2682 

Facsimile: (703) 234-2684 

Attention: Carol DiBattiste, General Counsel 

Email: cdibattiste@comscore.com 

  
 22 

 With a copy (for informational purposes only) to: 

Jones Day 
 1420 Peachtree
Street, N.E., Suite 800 
 Atlanta, Georgia 30309-3053 

Telephone: (404) 521-3939 

Facsimile: (404) 581-8330 

Attention: Mark L. Hanson, Esq. 

Email: mlhanson@jonesday.com 

If to the Transfer Agent: 

American Stock Transfer & Trust Company 

6201 15th Ave 

Brooklyn, NY 11219 
 Telephone:
(972) 684-5308 
 Facsimile: (718) 765-8763 

Attention: Bill Torre 
 E-mail: admin12@astfinancial.com 
 If to Legal Counsel: 

Schulte Roth & Zabel LLP 

919 Third Avenue 
 New York, New
York 10022 
 Telephone: (212) 756-2000 

Facsimile: (212) 593-5955 

Attention: Eleazer Klein, Esq. 

Email: eleazer.klein@srz.com 
 If to a Buyer, to
its address, facsimile number and/or email address set forth on the Schedule of Buyers attached hereto, with copies to such Buyer’s representatives as set forth on the Schedule of Buyers, or to such other address, facsimile number and/or email
address to the attention of such other Person as the recipient party has specified by written notice given to each other party five (5) days prior to the effectiveness of such change. Written confirmation of receipt (A) given by the
recipient of such notice, consent, waiver or other communication, (B) mechanically or electronically generated by the sender’s facsimile machine or email containing the time, date, recipient facsimile number or e-mail address and an image of the first page of such transmission or (C) provided by a courier or overnight courier service shall be rebuttable evidence of personal service, receipt by facsimile or receipt
from a nationally recognized overnight delivery service in accordance with clause (i), (ii) or (iii) above, respectively. 

  
 23 

 (c) Failure of any party to exercise any right or remedy under this Agreement or otherwise, or
delay by a party in exercising such right or remedy, shall not operate as a waiver thereof. 
 (d) All questions concerning the
construction, validity, enforcement and interpretation of this Agreement shall be governed by the internal laws of the State of New York, without giving effect to any choice of law or conflict of law provision or rule (whether of the State of New
York or any other jurisdictions) that would cause the application of the laws of any jurisdictions other than the State of New York. Each party hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in The
City of New York, Borough of Manhattan, for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein, and hereby irrevocably waives, and agrees not to assert in any suit,
action or proceeding, any claim that it is not personally subject to the jurisdiction of any such court, that such suit, action or proceeding is brought in an inconvenient forum or that the venue of such suit, action or proceeding is improper. Each
party hereby irrevocably waives personal service of process and consents to process being served in any such suit, action or proceeding by mailing a copy thereof to such party at the address for such notices to it under this Agreement and agrees
that such service shall constitute good and sufficient service of process and notice thereof to the fullest extent enforceable under applicable law. Nothing contained herein shall be deemed to limit in any way any right to serve process in any
manner permitted by law. EACH PARTY HEREBY IRREVOCABLY WAIVES ANY RIGHT IT MAY HAVE, AND AGREES NOT TO REQUEST, A JURY TRIAL FOR THE ADJUDICATION OF ANY DISPUTE HEREUNDER OR IN CONNECTION HEREWITH OR ARISING OUT OF THIS AGREEMENT OR ANY
TRANSACTION CONTEMPLATED HEREBY. 
 (e) If any provision of this Agreement is prohibited by law or otherwise determined to be invalid or
unenforceable by a court of competent jurisdiction, the provision that would otherwise be prohibited, invalid or unenforceable shall be deemed amended to apply to the broadest extent that it would be valid and enforceable, and the invalidity or
unenforceability of such provision shall not affect the validity of the remaining provisions of this Agreement so long as this Agreement as so modified continues to express, without material change, the original intentions of the parties as to the
subject matter hereof and the prohibited nature, invalidity or unenforceability of the provision(s) in question does not substantially impair the respective expectations or reciprocal obligations of the parties or the practical realization of the
benefits that would otherwise be conferred upon the parties. The parties will endeavor in good faith negotiations to replace the prohibited, invalid or unenforceable provision(s) with a valid provision(s), the effect of which comes as close as
possible to that of the prohibited, invalid or unenforceable provision(s). 
 (f) This Agreement, the other Transaction Documents (as
defined in the Securities Purchase Agreement) and the instruments referenced herein and therein constitute the entire agreement among the parties hereto with respect to the subject matter hereof and thereof. There are no restrictions, promises,
warranties or undertakings, other than those set forth or referred to herein and therein. This Agreement, the other Transaction Documents and the instruments referenced herein and therein supersede all prior agreements and understandings among the
parties hereto with respect to the subject matter hereof and thereof. 

  
 24 

 (g) Subject to the requirements of Section 9, this Agreement shall inure to the benefit of
and be binding upon the permitted successors and assigns of each of the parties hereto. 
 (h) The headings in this Agreement are for
convenience of reference only and shall not limit or otherwise affect the meaning hereof. 
 (i) This Agreement may be executed in identical
counterparts, each of which shall be deemed an original but all of which shall constitute one and the same agreement. This Agreement, once executed by a party, may be delivered to the other party hereto by facsimile or electronic transmission of a
copy of this Agreement bearing the signature of the party so delivering this Agreement. 
 (j) Each party shall do and perform, or cause to
be done and performed, all such further acts and things, and shall execute and deliver all such other agreements, certificates, instruments and documents, as any other party may reasonably request in order to carry out the intent and accomplish the
purposes of this Agreement and the consummation of the transactions contemplated hereby. 
 (k) All consents and other determinations
required to be made by the Investors pursuant to this Agreement shall be made, unless otherwise specified in this Agreement, by the Required Holders, determined as if all of the outstanding Notes then held by the Investors have been converted for
Registrable Securities without regard to any limitations on the issuance of Common Stock pursuant to the terms of the Notes and the outstanding Warrants then held by Investors have been exercised for Registrable Securities without regard to any
limitations on exercise of the Warrants. 
 (l) The language used in this Agreement will be deemed to be the language chosen by the parties
to express their mutual intent and no rules of strict construction will be applied against any party. 
 (m) This Agreement is intended for
the benefit of the parties hereto and their respective permitted successors and assigns, and is not for the benefit of, nor may any provision hereof be enforced by, any other Person. 

(n) The obligations of each Investor hereunder are several and not joint with the obligations of any other Investor, and no provision of this
Agreement is intended to confer any obligations on any Investor vis-à-vis any other Investor. Nothing contained herein, and no action taken by any Investor
pursuant hereto, shall be deemed to constitute the Investors as a partnership, an association, a joint venture or any other kind of entity, or create a presumption that the Investors are in any way acting in concert or as a group with respect to
such obligations or the transactions contemplated herein. 
 * * * * * * 

[Signature Page Follows] 
  

  
 25 

 IN WITNESS WHEREOF, each Buyer and the Company have caused their respective signature page
to this Registration Rights Agreement to be duly executed as of the date first written above. 
  

			
	COMPANY:
	
	COMSCORE, INC.
		
	By:	 	 /s/ Gregory A. Fink

		 	Name: Gregory A. Fink
		 	Title: Chief Financial Officer

 IN WITNESS WHEREOF, each Buyer and the Company have caused their respective signature page
to this Registration Rights Agreement to be duly executed as of the date first written above. 
  

			
	BUYER:
	
	STARBOARD VALUE AND OPPORTUNITY MASTER FUND LTD.

		
	By:	 	Starboard Value LP, its investment manager
		
	By:	 	 /s/ Jeffrey C. Smith

	Name:	 	Jeffrey C. Smith
	Title:	 	Authorized Signatory

 IN WITNESS WHEREOF, each Buyer and the Company have caused their respective signature page
to this Registration Rights Agreement to be duly executed as of the date first written above. 
  

			
	BUYER:
	
	STARBOARD VALUE AND OPPORTUNITY C LP

		
	By:	 	Starboard Value R LP, its general partner
		
	By:	 	 /s/ Jeffrey C. Smith

	Name:	 	Jeffrey C. Smith
	Title:	 	Authorized Signatory

 IN WITNESS WHEREOF, each Buyer and the Company have caused their respective signature page
to this Registration Rights Agreement to be duly executed as of the date first written above. 
  

			
	BUYER:
	
	STARBOARD VALUE AND OPPORTUNITY S LLC
		
	By:	 	Starboard Value LP, its manager
		
	By:	 	 /s/ Jeffrey C. Smith

	Name:	 	Jeffrey C. Smith
	Title:	 	Authorized Signatory

 IN WITNESS WHEREOF, each Buyer and the Company have caused their respective signature page
to this Registration Rights Agreement to be duly executed as of the date first written above. 
  

			
	BUYER:
	
	STARBOARD VALUE LP, in its capacity as the investment manager of a certain managed account
		
	By:	 	Starboard Value GP LLC, its general partner
		
	By:	 	 /s/ Jeffrey C. Smith

	Name:	 	Jeffrey C. Smith
	Title:	 	Authorized Signatory

 SCHEDULE OF BUYERS 

 

					
	 Buyer
	  	 Buyer Address
and Facsimile Number
	  	 Buyer’s Representative’s Address 
and Facsimile
Number

			
	Starboard Value and Opportunity Master Fund Ltd.	  	c/o Starboard Value LP
777 Third Avenue, 18th Floor
New York, NY 10017
Attention: Jeffrey C. Smith
Facsimile: 212-845-7989
Telephone: 212-845-7977
E-mail: jsmith@starboardvalue.com	  	Schulte Roth & Zabel LLP
919 Third Avenue
New York, New York 10022
Attention: Eleazer Klein, Esq.
Facsimile: (212) 593-5955
Telephone: (212) 756-2376
			
	Starboard Value and Opportunity S LLC	  	 c/o Starboard Value LP
777 Third Avenue, 18th Floor
New York, NY 10017
Attention: Jeffrey C. Smith
Facsimile: 212-845-7989
Telephone: 212-845-7977
E-mail:
jsmith@starboardvalue.com
	  	Schulte Roth & Zabel LLP
919 Third Avenue
New York, New York 10022
Attention: Eleazer Klein, Esq.
Facsimile: (212) 593-5955
Telephone: (212) 756-2376
			
	Starboard Value and Opportunity C LP	  	c/o Starboard Value LP
777 Third Avenue, 18th Floor
New York, NY 10017
Attention: Jeffrey C. Smith
Facsimile: 212-845-7989
Telephone: 212-845-7977
E-mail: jsmith@starboardvalue.com	  	Schulte Roth & Zabel LLP
919 Third Avenue
New York, New York 10022
Attention: Eleazer Klein, Esq.
Facsimile: (212) 593-5955
Telephone: (212) 756-2376
			
	Account Managed by Starboard Value LP	  	c/o Starboard Value LP
777 Third Avenue, 18th Floor
New York, NY 10017
Attention: Jeffrey C. Smith
Facsimile: 212-845-7989
Telephone: 212-845-7977
E-mail: jsmith@starboardvalue.com	  	Schulte Roth & Zabel LLP
919 Third Avenue
New York, New York 10022
Attention: Eleazer Klein, Esq.
Facsimile: (212) 593-5955
Telephone: (212) 756-2376

 EXHIBIT A 

SELLING SHAREHOLDERS1 

The [shares of common stock] being offered by the [selling shareholders] are those issuable to the [selling shareholders] pursuant to the
terms and upon conversion of the [convertible notes] and upon exercise of the [warrants]. For additional information regarding the issuance of the [convertible notes] and [warrants], see [“Private Placement of Convertible Notes and
Warrants”] above. We are registering the [shares of common stock] being offered hereby pursuant to our obligations to do so incurred in connection with the issuance of the [convertible notes] and the [warrants] and in order to permit the
[selling shareholders] to offer the [shares] for resale from time to time. [Except for the purchase from us of the [convertible notes] and the [warrants] issued pursuant to the Securities Purchase Agreement, and the transactions contemplated
thereby, and entry into and performance under that certain agreement made and entered into as of September 28, 2017 by and among us and [affiliates of] the [selling shareholders] as described in our Current Report on Form 8-K filed with the SEC on October 4, 2017, the [selling shareholders] and certain of their affiliates have not had any material relationship with us within the past three years. 

The table below identifies each of the [selling shareholders] and provides other information regarding the beneficial ownership of the [shares
of common stock] by each of the [selling shareholders]. The second column lists the number of [shares of common stock] beneficially owned by each [selling shareholder], based on its ownership of the [convertible notes] and [warrants], as of
                    , 201        , assuming conversion of all [convertible notes] at the [Conversion Price]
in effect as of the [Trading Day] immediately preceding the date the [registration statement] is initially filed with the [SEC] and exercise of all [warrants] held by the [selling shareholders] on that date, without regard to any limitations on the
issuance of [common stock] pursuant to the terms of the [Notes] or exercise of the [Warrants]. 
 The third column lists the maximum number
of [shares of common stock] being offered pursuant to this prospectus by the [selling shareholders]. 
 The fourth column lists the [shares
of common stock] to be held by each [selling shareholder] after completion of this offering, assuming conversion, at the [Conversion Price] in effect as of the [Trading Day] immediately preceding the date the [registration statement] is initially
filed with the [SEC], and sale of the [shares of common stock] underlying the [convertible notes] held by each of the [selling shareholders] on such date and the exercise and sale of all [warrants] held by each of the [selling shareholders] on such
date, in each case, without regard to any limitations on the issuance of [common stock] pursuant to the terms of the Notes or exercise of the Warrants. [The fifth column lists the percentage ownership of our [common stock] by each [selling
shareholder] after completion of this offering, assuming that each [selling shareholder] sells all of the [shares] covered by this prospectus, to the extent such percentage will exceed 1% of the total number of [shares of common stock] outstanding.

 The information presented regarding the [selling shareholders] is based, in part, on information [the selling shareholders] provided to
us in writing specifically for use herein. 
  

	1 	Defined terms between brackets to be adjusted to defined terms used in the applicable Registration Statement. 

  
 Annex I-1 

 In accordance with the terms of [a registration rights agreement] entered into with the [selling
shareholders] in connection with the issuance of the [convertible notes] and the [warrants], this prospectus generally covers the resale of at least the sum of (i) 130% of the maximum number of [shares of common stock] issued and issuable pursuant
to the [convertible notes] as of the [Trading Day] immediately preceding the date the [registration statement] is initially filed with the [SEC], and (ii) the maximum number of [shares of common stock] issued and issuable upon exercise of the
related [warrants] as of the [Trading Day] immediately preceding the date the [registration statement] is initially filed with the [SEC]. Because the conversion price of the [convertible notes] may be adjusted, the Company may elect to pay
interest on the [convertible notes] in cash rather than in [shares of common stock], and the interest rate on the [convertible notes] is subject to change, the number of [shares] that will actually be issued may be more or less than the number of
[shares] being offered by this prospectus. 
 Under the terms of the [convertible notes] and the [warrants], a [selling shareholder] may not
convert the [convertible notes] or exercise the [warrants] to the extent such conversion or exercise would cause such [selling shareholder], together with its affiliates, to beneficially own a number of [shares of common stock] which would exceed
4.99% of our then outstanding [shares of common stock] following such conversion or exercise, excluding for purposes of such determination [shares of common stock] issuable pursuant to the terms of the [convertible notes] which have not been
converted and upon exercise of the [warrants] which have not been exercised. The number of [shares] in the second column does not reflect this limitation. The [selling shareholders] may sell all, some or none of their shares in this offering. See
“Plan of Distribution.” 

  
 Annex I-2 

																	
	 

Name of Selling Shareholder
	  	Number of Shares of
Common Stock Owned
Prior to Offering	 	  	Maximum Number of
Shares of Common
Stock to be Sold
Pursuant to this
Prospectus	 	  	Number of Shares of
Common Stock
Owned After
Offering	 	 	Percentage of
Shares of Common
Stock Owned
After Offering	 
	 [•] (1)
	  				  				  	 	[	•] 	 	 	[	*] 

  

	*	Less than one percent. 

 (1) 

  
 Annex I-3 

 PLAN OF DISTRIBUTION 

We are registering the [shares of common stock] issuable pursuant to the terms of the [convertible notes] and upon exercise of the [warrants]
to permit the resale of these [shares of common stock] by the holders of the [convertible notes] and [warrants] from time to time after the date of this prospectus. We will not receive any of the proceeds from the sale by the [selling shareholders]
of these [shares of common stock]. We will bear all fees and expenses incident to the registration of the [shares of common stock] offered hereby. 

The [selling shareholders] have advised us that they may sell all or a portion of the [shares of common stock] beneficially owned by them and
offered hereby from time to time directly or through one or more underwriters, broker-dealers or agents. If the [selling shareholders] sell [shares of common stock] through underwriters or broker-dealers, the [selling shareholders] will be
responsible for any underwriting discounts or commissions or agent’s commissions. The [selling shareholders] have advised us that the [shares of common stock] may be sold in one or more transactions at fixed prices, at prevailing market prices
at the time of the sale, at varying prices determined at the time of sale, or at negotiated prices. These sales may be effected in transactions, which may involve crosses or block transactions, 

 

	 	•	 	on any national securities exchange or quotation service on which our [common stock] may be listed or quoted at the time of sale; 

  

	 	•	 	in the over-the-counter market; 

  

	 	•	 	in transactions otherwise than on these exchanges or systems or in the over-the-counter market; 

 

	 	•	 	through the writing of options, whether such options are listed on an options exchange or otherwise; 

  

	 	•	 	in ordinary brokerage transactions and transactions in which the broker-dealer solicits purchasers; 

  

	 	•	 	in block trades in which the broker-dealer will attempt to sell the [shares] as agent but may position and resell a portion of the block as principal to facilitate the transaction; 

 

	 	•	 	through purchases by a broker-dealer as principal and resale by the broker-dealer for its account; 

  

	 	•	 	through an exchange distribution in accordance with the rules of the applicable exchange; 

  

	 	•	 	through privately negotiated transactions; 

  

	 	•	 	through short sales; 

  

	 	•	 	through sales pursuant to [Rule 144]; 

  
 Annex I-4 

	 	•	 	through block trades in which broker-dealers may agree with the [selling shareholders] to sell a specified number of such [shares] at a stipulated price per share; 

 

	 	•	 	a combination of any such methods of sale; and 

  

	 	•	 	any other method permitted pursuant to applicable law. 

 If the [selling shareholders] effect
such transactions by selling [shares of common stock] offered hereby to or through underwriters, broker-dealers or agents, such underwriters, broker-dealers or agents may receive commissions in the form of discounts, concessions or commissions from
the [selling shareholders] or commissions from purchasers of the [shares of common stock] for whom they may act as agent or to whom they may sell as principal (which discounts, concessions or commissions as to particular underwriters, broker-dealers
or agents may be in excess of those customary in the types of transactions involved). In connection with sales of the [shares of common stock] offered hereby or otherwise, the [selling shareholders] have advised us that they may enter into hedging
transactions with broker-dealers, which may in turn engage in short sales of the [shares of common stock] in the course of hedging in positions they assume. The [selling shareholders] have advised us that they may also sell [shares of common stock]
short and deliver [shares of common stock] covered by this prospectus to close out short positions and to return borrowed [shares] in connection with such short sales. The [selling shareholders] have advised us that they may also loan or pledge
[shares of common stock] to broker-dealers that in turn may sell such [shares]. 
 The [selling shareholders] have advised us that they may
pledge or grant a security interest in some or all of the [convertible notes], [warrants] or [shares of common stock] owned by them and, if they default in the performance of their secured obligations, the pledgees or secured parties may offer and
sell the [shares of common stock] from time to time pursuant to this prospectus or any amendment to this prospectus under Rule 424(b)(3) or other applicable provision of the Securities Act of 1933, amending, if necessary, the list of [selling
shareholders] to include the pledgee, transferee or other successors in interest as [selling shareholders] under this prospectus. The [selling shareholders] also may transfer and donate the [shares of common stock] in other circumstances in which
case the transferees, donees, pledgees or other successors in interest will be the selling beneficial owners for purposes of this prospectus. 

The [selling shareholders] and any broker-dealer participating in the distribution of the [shares of common stock] offered hereby may be
deemed to be “underwriters” within the meaning of the [Securities Act], and any commission paid, or any discounts or concessions allowed to, any such broker-dealer may be deemed to be underwriting commissions or discounts under the
[Securities Act]. At the time a particular offering of the [shares of common stock] is made, a prospectus supplement, if required, will be distributed which will set forth the aggregate amount of [shares of common stock] being offered and the terms
of the offering, including the name or names of any broker-dealers or agents, any discounts, commissions and other terms constituting compensation from the [selling shareholders] and any discounts, commissions or concessions allowed or reallowed or
paid to broker-dealers. 

  
 Annex I-5 

 Under the securities laws of some states, the [shares of common stock] being offered hereby may
be sold in such states only through registered or licensed brokers or dealers. In addition, in some states the [shares of common stock] being offered hereby may not be sold unless such [shares] have been registered or qualified for sale in such
state or an exemption from registration or qualification is available and is complied with. 
 There can be no assurance that any [selling
shareholder] will sell any or all of the [shares of common stock] registered pursuant to the [registration statement] of which this prospectus forms a part. 

The [selling shareholders] and any other person participating in such distribution will be subject to applicable provisions of the [Securities
Exchange Act of 1934] and the rules and regulations thereunder, including, without limitation, Regulation M of the [Exchange Act], which may limit the timing of purchases and sales of any of the [shares of common stock] being offered hereby by the
[selling shareholders] and any other participating person. Regulation M may also restrict the ability of any person engaged in the distribution of the [shares of common stock] being offered hereby to engage in market-making activities with respect
to the [shares of common stock]. All of the foregoing may affect the marketability of the [shares of common stock] and the ability of any person or entity to engage in market-making activities with respect to the [shares of common stock]. 

We will pay all expenses of the registration of the [shares of common stock] pursuant to the [registration rights agreement], estimated to be
$[    ] in total, including, without limitation, Securities and Exchange Commission filing fees and expenses of compliance with state securities or “blue sky” laws; provided, however, that a [selling shareholder] will
pay all underwriting discounts and selling commissions, if any. We have agreed to indemnify the [selling shareholders] against liabilities, including some liabilities under the [Securities Act], in accordance with the [registration rights
agreement], or the [selling shareholders] will be entitled to contribution. We may be indemnified by the [selling shareholders] against civil liabilities, including liabilities under the [Securities Act], that may arise from any written information
furnished to us by the [selling shareholder] specifically for use in the [registration statement] of which this prospectus forms a part, in accordance with the related [registration rights agreement], or we may be entitled to contribution. 

Once sold under the [registration statement] of which this prospectus forms a part, the [shares of common stock] will be freely tradable in
the hands of persons other than our affiliates. 

  
 Annex I-6

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