Letter Agreement, dated July 5, 2022, by and between comScore, Inc. and Jonathan Carpenter

July 5, 2022

Mr. Jonathan Carpenter

Comscore, Inc.

7 Penn Plaza, 10th Floor

New York, NY 10001

Dear Jon:

On behalf of Comscore, Inc. (the “Company”), I am pleased to provide you (“Executive”) with this letter (this “Letter”) memorializing the terms of your employment as Chief Executive Officer of the Company, effective as of July 6, 2022 (the “Start Date”). Reference is made herein to those certain Change of Control and Severance Agreements by and between Executive and the Company dated as of November 29, 2021 and amended effective as of July 6, 2022 (collectively, the “Severance Agreement”) and that certain Indemnification Agreement by and between Executive and the Company dated as of November 29, 2021 (the “Indemnification Agreement”).

1.COMPENSATION

During the period in which Executive serves as the Chief Executive Officer of the Company, as compensation for all services provided by Executive, Executive will receive the following:

•Eligibility to participate in the Company’s short-term incentive program (“STIP”) with a target annual incentive equal to 100% of Executive’s annualized base salary, which will be prorated for the portion of the 2022 STIP that elapses following the Start Date and otherwise subject to the terms and conditions of the Company’s STIP as in effect from time to time. For the avoidance of doubt, the goals established by the Company for the 2022 STIP will remain in effect for the duration of 2022.

•Beginning in 2023, eligibility to participate in the Company’s long-term incentive program (“LTIP”), subject to the terms and conditions of the Company’s LTIP as in effect from time to time. In addition, Executive’s outstanding restricted stock units, granted to Executive on November 29, 2021 (the “RSUs”), will remain outstanding and subject to their existing terms.

•Subject to approval by the Board of Directors of the Company (the “Board”), Executive will receive a one-time grant of options to purchase 500,000 shares of the Company’s common stock under (and pursuant to the terms of) the Company’s 2018 Equity and Incentive Compensation Plan (the “Plan”), with a per share exercise price equal to the greater of (i) the closing price per share of the Company’s common stock on the date of grant or (ii) $2.50 (the “Options”), which will vest in equal annual installments on the first, second, third and fourth anniversaries of the Start Date. Any Options granted will be subject to (i) other terms and conditions determined by the Board (not inconsistent with

this Letter), and (ii) Executive’s continued service with the Company or one of its affiliates through each vesting date. Notwithstanding the foregoing, if Executive’s service with the Company and its affiliates is terminated by the Company without Cause or by Executive for Good Reason, in either case within 12 months following a Change of Control (each, as defined in the Severance Agreement), then subject to Executive’s timely entry into a release of claims in a form acceptable to the Company (which will: (i) release any then-existing claims against the Company, its affiliates, and each of their respective predecessors, successors, officers, directors, managers, members, partners, agents, and representatives; and (ii) be provided by the Company to Executive within five (5) days after Executive’s service ends), any unvested portion of the Options will fully vest upon such termination and Executive will have 90 days thereafter (or until the Option’s 10-year expiration date, if earlier) to exercise any vested Options.

•Subject to approval by the Board, Executive will receive a one-time grant of 400,000 performance restricted stock units (determined by dividing $1,000,000 by a price per share of $2.50) (the “PRSUs”) under (and pursuant to the terms of) the Plan, which will have the opportunity to vest quarterly from the Start Date through the tenth anniversary of the Start Date or an earlier Change of Control, subject to and in accordance with the achievement of each of the following stock-price hurdles on or prior to such date:

*The applicable Stock-Price Hurdle is achieved on the date the closing price of a share of common stock of the Company is equal to or greater than the applicable Stock-Price Hurdle for 65 consecutive trading days. If vesting in connection with a Change of Control, the applicable Stock-Price Hurdle is achieved based on the per share price paid in connection with such Change of Control, with linear interpolation for Change of Control prices that fall between Stock-Price Hurdles listed herein.

The PRSUs are subject to (i) the terms and conditions determined by the Board (not inconsistent with this Letter), (ii) deferred settlement following vesting until the earlier to occur of a “change in control event” or Executive’s “separation from service” (in each case, within the meaning of Section 409A of the Internal Revenue Code of 1986 (“Section 409A”)), and (iii) Executive’s continued service with the Company or one of its affiliates through each vesting date.

Executive’s one-time signing bonus of $300,000 paid in February 2022 for his services as Chief Financial Officer will remain subject to the previously negotiated and agreed upon clawback provision (in Executive’s offer letter dated October 19, 2021) through November 29, 2022.

2.MISCELLANEOUS

Reference is made to that certain At-Will Employment, Confidential Information, Invention Assignment and Arbitration Agreement between Executive and the Company executed October 19, 2021 (the “NDA”). In entering into this Letter, and as an express inducement for the Company to provide the consideration referenced herein and to continue to employ Executive, the Company and Executive agree that, effective as of the Start Date: (i) the term “Restricted Period” as used in the NDA is amended to mean the period during which Executive is employed with the Company and continuing for 24 months after Executive’s employment with the Company ends (regardless of the reason); and (ii) the reference to “fifteen (15) months” within the last paragraph of Exhibit C of the NDA is amended to read “twenty-four (24) months”. Executive acknowledges and agrees that, following the Start Date, the Company will be entrusting Executive, in Executive’s unique and special capacity, with developing the goodwill of the Company, and Executive will continue to have access to Confidential Information (as defined in the NDA). As an express incentive for the Company to enter into this Letter and employ Executive hereunder, Executive expressly promises to abide by the terms of the NDA, as amended by this paragraph. Executive acknowledges and agrees that the NDA, as amended hereby, is necessary to protect the Company’s legitimate business interests and is reasonable and enforceable in all respects.

Executive’s employment is not for a specific term and is terminable at-will. This means that Executive is not entitled to remain an employee or officer of the Company or any of its subsidiaries for any particular period of time, and either Executive or the Company may terminate the employment relationship at any time, with or without notice, and for any reason not prohibited by applicable law. During the term of Executive’s employment with the Company, Executive will be expected to comply with all of the Company’s policies and procedures in effect from time to time.

In entering into this Letter, Executive represents that Executive has complied with all applicable laws in the course of providing services for the Company or any of its affiliates through the Start Date, and Executive has not engaged in any breach of fiduciary duty, breach of any duty of loyalty or disclosure, fraudulent activity, unlawful or tortious activity or criminal activity, in each case: (i) towards or with respect to the Company or any of its affiliates; or (ii) with respect to any action or omission undertaken (or that was failed to be undertaken) in the course of his employment, engagement or affiliation with the Company or any of its affiliates.

Amounts paid or payable hereunder shall be subject to the provisions of any applicable clawback policies or procedures adopted by the Company from time to time, which clawback policies or procedures may provide for forfeiture and/or recoupment of amounts paid or payable hereunder. Notwithstanding anything herein to the contrary, the Company reserves the right, without Executive’s consent, to adopt or amend any such clawback policies and procedures, including such policies and procedures applicable to amounts paid or payable hereunder, with retroactive effect.

The Company may withhold from any payments made pursuant to this Letter all federal, state, local, and other taxes and withholdings as may be required by any law or governmental regulation or ruling.

It is intended that the provisions of this Letter are either exempt from or compliant with the requirements of Section 409A, and to the extent that the requirements of Section 409A are applicable thereto, all provisions of this Letter shall be construed in a manner consistent with the requirements for avoiding taxes or penalties under Section 409A. To the extent that any right to reimbursement of expenses or payment of any benefit in-kind under this Letter constitutes nonqualified deferred compensation (within the meaning of Section 409A), (i) any such expense reimbursement shall be made by the Company no later than the last day of Executive’s taxable year following the taxable year in which such expense was incurred by Executive, (ii) the right to reimbursement or in-kind benefits shall not be subject to liquidation or exchange for another benefit, and (iii) the amount of expenses eligible for reimbursement or in-kind benefits provided during any taxable year shall not affect the expenses eligible for reimbursement or in-kind benefits to be provided in any other taxable year; provided, that the foregoing clause shall not be violated with regard to expenses reimbursed under any arrangement covered by Section 105(b) of the Internal Revenue Code of 1986, as amended, solely because such expenses are subject to a limit related to the period in which the arrangement is in effect.

Notwithstanding any provision in this Letter to the contrary, if any payment or benefit provided for herein would be subject to additional taxes and interest under Section 409A if Executive’s receipt of such

payment or benefit is not delayed until the earlier of (i) the date of Executive’s death or (ii) the date that is six months after the date of Executive’s “separation from service” within the meaning of Section 409A (such earlier date, the “Section 409A Payment Date”), then such payment or benefit shall not be provided to Executive (or Executive’s estate, if applicable) until the Section 409A Payment Date.

Notwithstanding the provisions of the two preceding paragraphs, the Company makes no representations that the payments, equity awards and benefits provided under this Letter are exempt from, or compliant with, Section 409A and in no event shall the Company or any of its affiliates be liable for all or any portion of any taxes, penalties, interest or other expenses that may be incurred by Executive on account of non-compliance with Section 409A.

This Agreement, the Severance Agreement, the NDA (as amended hereby) and the Indemnification Agreement constitute the entire agreement of the parties with regard to the subject matter hereof and are intended by the parties to supersede all prior and contemporaneous agreements and understandings, oral and written, between Executive and the Company or any of its affiliates with regard to the subject matter hereof including, but not limited to, Executive’s offer letter dated October 19, 2021 (except with respect to the clawback provision referenced in Section 1 of this Letter). Executive represents that he has received all amounts owed to him by the Company or any of its affiliates as of the date of this Letter.

All references herein to a statute, agreement, instrument or other document shall be deemed to refer to such statute, agreement, instrument or other document as amended, supplemented, modified and restated from time to time. Neither this Letter nor any uncertainty or ambiguity herein shall be construed or resolved against any party hereto, whether under any rule of construction or otherwise. On the contrary, this Letter has been reviewed by each of the parties hereto and shall be construed and interpreted according to the ordinary meaning of the words used so as to fairly accomplish the purposes and intentions of the parties. This Letter may be executed in any number of counterparts, each of which will be deemed to be an original and all of which constitute one agreement that is binding upon each of the parties, notwithstanding that all parties are not signatories to the same counterpart.

We look forward to your contributions to the Company as Chief Executive Officer and appreciate your willingness to assume this role. To accept the terms of your employment memorialized in this Letter, please sign below.

ACKNOWLEDGED AND AGREED:

Jonathan Carpenter

Date: July 5, 2022