Form of Restricted Stock Unit Agreement under Amended 2015 Stock Plan

Grant Date of the RSUs

(the “Grant Date”):

Grant of Award. The Company hereby grants to the Participant a Stock-Based Award for the number of RSUs set forth in the Grant Notice (the “Award”). Each RSU represents a contingent entitlement of the Participant to receive one share of Common Stock, on the terms and conditions and subject to all the limitations set forth herein, in the Grant Notice, and in the Plan, which are incorporated herein by reference.

Vesting of Award.

Subject to the terms and conditions set forth in this Agreement and the Plan: (i) the Award shall vest as set forth in the Grant Notice and is subject to the other terms and conditions of this Agreement and the Plan; and (ii) upon vesting, the Participant shall be entitled to receive such number of shares of Common Stock equivalent to the number of such vested RSUs.

Notwithstanding anything to the contrary in the Grant Notice or this Agreement, any fractional Shares resulting from the vesting schedule set forth in the Grant Notice will be rounded to the nearest whole Share and shall be rounded up or down as necessary as of the last Vesting Date; provided, in all cases, the Participant cannot vest in more than the number of RSUs set forth in the Grant Notice.

Forfeiture of Unvested RSUs.

Except as otherwise set forth in this Agreement, the Grant Notice, the Plan, or a separate agreement between Participant and the Company, if the Participant ceases his or her continuous employment or other service relationship with or to the Company or any of its Affiliates as an Employee, director, and/or Consultant (“Termination”), then all then-unvested RSUs shall automatically and immediately be forfeited to the Company as of such Termination, and this Agreement and the Grant Notice shall automatically and immediately terminate and be of no further force or effect.

For purposes of this Agreement, the Participant’s continuous employment or other service relationship with or to the Company or any of its Affiliates as an Employee, director, and/or Consultant does not terminate when the Participant goes on a bona fide leave of absence that was approved by the Administrator in writing, if the terms of the leave provide for continued service crediting, or when continued service crediting is required by applicable law. The Participant’s continuous employment or other service relationship with or to the Company or any of its Affiliates as an Employee, director, and/or Consultant terminates in any event when the approved leave ends unless the Participant immediately returns to active work. The Administrator may determine, in its discretion, which leaves count for this purpose and when the Participant’s continuous employment or other service relationship with or to the Company or any of its Affiliates as an Employee, director, and/or Consultant terminates for all purposes under the Plan in accordance with the provisions of the Plan.

This Award is expressly granted as consideration for the Participant’s agreement to comply with the Confidentiality and Inventions and Restrictive Covenants Agreement attached as Exhibit A hereto (the “Restrictive Covenants Agreement”). Therefore, notwithstanding anything to the contrary contained in this Agreement, in the event that the Participant materially breaches the terms of the Restrictive Covenants Agreement, all of the Unvested RSUs then held by the Participant and all Common Stock issued upon the vesting of RSUs that are outstanding and held by the Participant shall be forfeited to the Company immediately upon written notice by the Company. No other awards granted to the Participant under the Plan shall be subject to the forfeiture and repayment obligation set forth in this Section 3.c.

Delivery of Award; Evidence of Issuance. Delivery of the Shares represented by the Participant’s vested RSUs shall be made as soon as practicable after the applicable Vesting Date and, in any event, by no later than sixty (60) days following each applicable Vesting Date. The issuance of the Shares represented by the Participant’s vested RSUs shall be evidenced in such a manner as the Administrator, in its discretion, deems appropriate, including, without limitation, by (i) book-entry registration or (ii) issuance of one or more share certificates.

Prohibitions on Transfer and Sale. This Award (including any additional RSUs received by the Participant as a result of stock dividends, stock splits, or any other similar transaction affecting the Company’s securities without receipt of consideration) shall not be transferable, without the prior approval of the Administrator, by the Participant, by the Participant, other than by will or by the laws of descent and distribution. Except as provided in the previous sentence, the Shares to be issued pursuant to this Agreement shall be issued, during the Participant’s lifetime, only to the Participant (or, in the event of legal incapacity or incompetence, to the Participant’s guardian or representative), and this Award shall not be assigned, pledged, or hypothecated in any way (whether by operation of law or otherwise) and shall not be subject to execution, attachment, or similar process. Any attempted transfer, assignment, pledge, hypothecation, or other disposition of this Award or of any rights granted hereunder contrary to the provisions of this Section 5, or the levy of any attachment or similar process upon this Award, shall be null and void.

Adjustments. The Plan contains provisions covering the treatment of RSUs and Shares in a number of contingencies, such as stock splits and Corporate Transactions. Provisions in the Plan for adjustment with respect to this Award and the related provisions with respect to successors to the business of the Company are hereby made applicable hereunder and are incorporated herein by reference.

Securities Law Compliance. The Participant specifically acknowledges and agrees that any sales of Shares shall be made in accordance with the requirements of the Securities Act. The Company currently has an effective registration statement on file with the United States Securities and Exchange Commission with respect to the Shares to be granted hereunder. Despite registration, applicable securities laws may restrict the ability of the Participant to sell his or her Shares, including due to the Participant’s affiliation with the Company. The Company shall not be obligated to either issue the Shares or permit the resale of any Shares if such issuance or resale would violate any applicable securities law, rule, or regulation.

Rights as a Stockholder. The Participant shall have no rights as a stockholder, including voting and dividend rights, with respect to the RSUs subject to this Agreement, unless and until Shares represented by the Participant’s vested RSUs have been issued to the Participant and either a certificate evidencing the Shares has been issued or an appropriate entry has been made on the Company’s books. No adjustments to Shares represented by the Participant’s vested RSUs shall be made for dividends, distributions, or other rights on or with respect to the Common Stock generally if the applicable record date for any such dividend, distribution, or right occurs before the Participant’s certificate is issued or an appropriate book entry is made, except as otherwise described in the Plan.

Incorporation of the Plan; Clawback. The Participant specifically understands and agrees that the RSUs and the Shares to be issued under the Agreement will be issued to the Participant pursuant to the Plan, a copy of which Plan the Participant acknowledges he or she has received, has read, and understands and by which Plan he or she agrees to be bound. The provisions of the Plan are incorporated herein by reference. In addition, the RSUs (and any compensation paid or Shares issued pursuant to this Agreement) is subject to recoupment in accordance with The Sarbanes-Oxley Act, The Dodd-Frank Wall Street Reform and Consumer Protection Act and any implementing regulations thereunder, any clawback policy adopted by the Company, and any compensation recovery policy otherwise required by applicable law. No recovery of compensation under such a clawback policy will be an event giving rise to a right to resign for “good reason” or for a “constructive termination” (or similar terms) under any agreement between the Participant and the Company or any Affiliate.

Tax Liability of the Participant and Payment of Taxes. The Participant acknowledges and agrees that any income or other taxes due from the Participant with respect to this Award or the Shares to be issued pursuant to this Agreement or otherwise sold shall be the Participant’s responsibility. In the event that the Company or an Affiliate determines that any federal, state, local, or foreign tax or withholding payment is required relating to the RSUs, or the delivery of Shares with respect to this Award, the Company or any Affiliate, subject to the proviso below, will have the right to withhold the delivery of vested Shares otherwise deliverable under this Agreement to meet such obligations, provided that, to the extent required to avoid adverse accounting consequences to the Company, the Shares so withheld will have an aggregate Fair Market Value not exceeding the minimum amount of tax required to be withheld by applicable laws and fractional Shares will not be retained to satisfy any portion of the Company’s withholding obligation (such process, “Net Settlement”); provided, however, the Administrator shall have the discretion to override Net Settlement, (i) provided ninety (90) days’ advance notice is given prior to a Vesting Date from the Company to the Participant, in which case such withholding shall be through a “same day sale” commitment with a broker-dealer that is a member of the Financial Industry Regulatory Authority (a “FINRA Dealer”), whereby the Participant irrevocably elects to sell a portion of the Shares to be delivered in connection with the RSUs to satisfy

Participant Acknowledgements and Authorizations. The Participant hereby acknowledges the following:

Neither the Company nor any Affiliate is, by the Plan or this Award, obligated to continue the Participant as an Employee, director, or Consultant of the Company or an Affiliate. Unless otherwise specified in a written employment or other written compensatory agreement between the Participant and the Company or an Affiliate, the Company or any Affiliate, as applicable, reserves the right to terminate the Participant’s employment or other service relationship with the Company or an Affiliate at any time and for any reason.

The Plan is discretionary in nature and may be suspended or terminated by the Company at any time.

The grant of this Award is considered a one-time benefit and does not create a contractual or other right to receive any other award under the Plan, benefits in lieu of awards, or any other benefits in the future.

The Plan is a voluntary program of the Company and future awards, if any, will be at the sole discretion of the Company, including, but not limited to, the timing of any grant, the amount of any award, vesting provisions, and the purchase price, if any.

The value of this Award is an extraordinary item of compensation outside of the scope of the Participant’s employment or consulting contract, agreement, or arrangement. As such, the Award is not part of normal or expected compensation for purposes of calculating any severance, resignation, redundancy, end of service payments, bonuses, long-service awards, pension or retirement benefits, or similar payments. The future value of the shares of Common Stock is unknown and cannot be predicted with certainty.

The Participant (i) authorizes the Company and each Affiliate and any agent of the Company or any Affiliate administering the Plan or providing Plan recordkeeping services to disclose to the Company or any of its Affiliates such information and data as the Company or any such Affiliate shall request in order to facilitate the grant of the Award and the administration of the Plan; and (ii) authorizes the Company and each Affiliate to store and transmit such information in electronic form for the purposes set forth in this Agreement.

The obligation of the Company to deliver Shares pursuant to this Award constitutes an unfunded and unsecured obligation of the Company. Until Shares are delivered, the Participant shall have no rights under this Agreement or the Plan, other than those of a general unsecured creditor of the Company. No assets of the Company shall be set aside for the settlement of the RSUs.

Notices. By accepting the Award, the Participant agrees that notices may be given to the Participant in writing either at the Participant’s home or mailing address as shown in the records of the Company or an Affiliate or by electronic transmission (including e-mail or reference to a website or other URL) sent to the Participant through the normal process employed by the Company or the Affiliate, as applicable, for communicating electronically with its employees or other service providers.

Assignment and Successors.

This Agreement is personal to the Participant and, without the prior approval of the Administrator, shall not be assignable by the Participant, other than by will or the laws of descent and distribution. This Agreement shall inure to the benefit of and be enforceable by the Participant’s legal representatives and beneficiaries.

This Agreement shall inure to the benefit of and be binding upon the Company and its successors and assigns.

Governing Law. This Agreement shall be construed and enforced in accordance with the laws of the State of Delaware, without giving effect to the conflict of law principles thereof; provided that, for the avoidance of doubt, the Restrictive Covenants Agreement shall continue to be governed solely by Pennsylvania law. For the purpose of litigating any dispute that arises under this Agreement, whether at law or in equity, the parties hereby consent to exclusive jurisdiction in the Commonwealth of Pennsylvania and agree that such litigation shall be conducted in the state courts of the Commonwealth of Pennsylvania or the federal courts of the United States for the Eastern District of Pennsylvania.

Severability. If any provision of this Agreement is held to be invalid or unenforceable by a court of competent jurisdiction, then such provision or provisions shall be modified to the extent necessary to make such provision valid and enforceable, and to the extent that this is impossible, then such provision shall be deemed to be excised from this Agreement, and the validity, legality, and enforceability of the rest of this Agreement shall not be affected thereby.

Entire Agreement. This Agreement, together with the Grant Notice, the Restrictive Covenants Agreement, and the Plan, constitutes the entire agreement and understanding between the parties hereto with respect to the subject matter hereof and supersedes all prior oral or written agreements and understandings relating to the subject matter hereof, including without limitation any offer letter provision related to the subject matter hereof. No statement, representation, warranty, covenant, or agreement not expressly set forth in this Agreement shall affect or be used to interpret, change, or restrict the express terms and provisions of this Agreement; provided, however, in any event, this Agreement shall be subject to and governed by the Plan.

Modifications and Amendments; Waivers and Consents. The terms and provisions of this Agreement may be modified or amended as provided in the Plan. Except as provided in the Plan, the terms and provisions of this Agreement may be waived, or consent for the departure therefrom granted, only by written document executed by the party entitled to the benefits of such terms or provisions. No such waiver or consent shall be deemed to be or shall constitute a waiver or consent with respect to any other terms or provisions of this Agreement, whether or not similar. Each such waiver or consent shall be effective only in the specific instance and for the purpose for which it was given, and shall not constitute a continuing waiver or consent.

Code Section 409A. The Award of RSUs evidenced by this Agreement is intended to be exempt from the nonqualified deferred compensation rules of Code Section 409A as a “short-term deferral” within the meaning of Code Section 409A and, to the maximum extent permitted, shall be construed accordingly. Notwithstanding anything to the contrary in the Plan or this Agreement, none of the Company, its Affiliates, the Board of Directors, the Administrator, or any of their respective agents or delegates will have any obligation to take any action to prevent the assessment of any excise tax or penalty on the Participant under Code Section 409A, and none of the Company, its Affiliates, the Board of Directors, the Administrator, or any of their respective agents or delegates will have any liability to the Participant or any other person for such tax or penalty.