Document:

EX-10.16

 Exhibit 10.16 

FORM OF INDEMNIFICATION AGREEMENT 

This Indemnification Agreement (this “Agreement”) is made as of
            , 2018 by and between Solid Biosciences Inc., a Delaware corporation (the “Company”), and
[                    ] (“Indemnitee”). This Agreement supersedes and replaces any and all previous agreements between the Company,
Solid Biosciences, LLC and/or Solid GT, LLC, on the one hand, and Indemnitee, on the other hand, covering the subject matter of this Agreement. Certain capitalized terms used herein are defined in Section 2 hereof. 

RECITALS 
 WHEREAS, highly
competent persons have become more reluctant to serve publicly held corporations as directors, officers or in other capacities unless they are provided with adequate protection through insurance or adequate indemnification against inordinate risks
of claims and actions against them arising out of their service to and activities on behalf of such corporations; 
 WHEREAS, the Board of
Directors of the Company (the “Board”) has determined that, in order to attract and retain qualified individuals, the Company will attempt to maintain on an ongoing basis, at its sole expense, liability insurance to protect persons
serving the Company and its subsidiaries from certain liabilities. Although the furnishing of such insurance has been a customary and widespread practice among United States-based corporations and other business enterprises, the Company believes
that, given current market conditions and trends, such insurance may be available to it in the future only at higher premiums and with more exclusions. At the same time, directors, officers and other persons in service to corporations or business
enterprises are being increasingly subjected to expensive and time-consuming litigation relating to, among other things, matters that traditionally would have been brought only against the corporation or business enterprise itself; 

WHEREAS, the uncertainties relating to such insurance and to indemnification have increased the difficulty of attracting and retaining such
persons; 
 WHEREAS, the Board has determined that the increased difficulty in attracting and retaining such persons is detrimental to the
best interests of the Company and its stockholders and that the Company should act to assure such persons that there will be increased certainty of such protection in the future; 

WHEREAS, the Bylaws of the Company (the “Bylaws”) require indemnification of the officers and directors of the Company and
the Certificate of Incorporation of the Company (the “Certificate of Incorporation”) requires indemnification of the directors of the Company, Indemnitee may also be entitled to indemnification pursuant to the General Corporation
Law of the State of Delaware (the “DGCL”). The Bylaws, the Certificate of Incorporation and the DGCL expressly provide that the indemnification provisions set forth therein are not exclusive, and thereby contemplate that contracts
may be entered into between the Company and members of the Board, officers and other persons with respect to indemnification; 
 WHEREAS, it
is reasonable, prudent and necessary for the Company contractually to obligate itself to indemnify, and to advance expenses on behalf of, such persons to the fullest extent permitted by applicable law so that they will serve or continue to serve the
Company free from undue concern that they will not be so indemnified; 

  
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 WHEREAS, this Agreement is a supplement to and in furtherance of the Bylaws, the Certificate of
Incorporation and any resolutions adopted pursuant thereto, and shall not be deemed a substitute therefor, nor to diminish or abrogate any rights of Indemnitee thereunder; 

WHEREAS, Indemnitee does not regard the protection available under the Bylaws, the Certificate of Incorporation and insurance as adequate in
the present circumstances, and may not be willing to serve as a director or officer without adequate protection, and the Company desires Indemnitee to serve in such capacity. Indemnitee is willing to serve, continue to serve and to take on
additional service for or on behalf of the Company on the condition that he or she be so indemnified; [and] 
 [WHEREAS, Indemnitee is a
representative of [●] [and its affiliated investment funds] (the “Fund”), and has certain rights to indemnification and/or insurance provided by the Fund which Indemnitee and the Fund intend to be secondary to the primary
obligation of the Company to indemnify Indemnitee as provided herein, with the Company’s acknowledgement and agreement to the foregoing being a material condition to Indemnitee’s willingness to serve on the Board;]1 
 NOW, THEREFORE, in consideration of the premises and the covenants contained herein,
the Company and Indemnitee do hereby covenant and agree as follows: 
 Section 1. Services to the Company. Indemnitee agrees to
serve as a director and/or officer of the Company, as the case may be. Indemnitee may at any time and for any reason resign from such position (subject to any other contractual obligation or any obligation imposed by operation of law), in which
event the Company shall have no obligation under this Agreement to continue Indemnitee in such position. This Agreement shall not be deemed an employment contract between the Company (or any of its subsidiaries or any Enterprise) and Indemnitee.
Indemnitee specifically acknowledges that Indemnitee’s employment with the Company (or any of its subsidiaries or any Enterprise), if any, is at will, and Indemnitee may be discharged at any time for any reason, with or without cause, except as
may be otherwise provided in any written employment contract between Indemnitee and the Company (or any of its subsidiaries or any Enterprise), other applicable formal severance policies duly adopted by the Board or, with respect to service as a
director or officer of the Company, by the Certificate of Incorporation, the Bylaws or the DGCL. The foregoing notwithstanding, this Agreement shall continue in force after Indemnitee has ceased to serve as a director or officer of the Company, as
provided in Section 16 hereof. 
 Section 2. Definitions. As used in this Agreement: 

(a) References to “agent” shall mean any person who is or was a director, officer or employee of the Company or a subsidiary
of the Company or other person authorized by the Company to act for the Company, to include such person serving in such capacity as a director, officer, employee, fiduciary or other official of another corporation, partnership, limited liability
company, joint venture, trust or other enterprise at the request of, for the convenience of or to represent the interests of the Company or a subsidiary of the Company. 
  

 

	1 	Include this recital and the other bracketed provisions where indicated throughout if the Indemnitee is affiliated with a venture capital fund or other entity that provides indemnification to the Indemnitee.

  
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 (b) A “Change in Control” shall be deemed to occur upon the earliest to occur
after the date of this Agreement of any of the following events: 
 i. any Person is or becomes the Beneficial Owner (as defined below),
directly or indirectly, of securities of the Company representing 35% or more of the combined voting power of the Company’s then outstanding securities unless the change in relative Beneficial Ownership of the Company’s securities by any
Person results solely from a reduction in the aggregate number of outstanding shares of securities entitled to vote generally in the election of directors; 

ii. during any period of two consecutive years (not including any period prior to the execution of this Agreement), individuals who at the
beginning of such period constitute the Board, and any new director (other than a director designated by a Person who has entered into an agreement with the Company to effect a transaction described in Sections 2(b)(i), 2(b)(iii) or 2(b)(iv)) whose
election by the Board or nomination for election by the Company’s stockholders was approved by a vote of at least two-thirds of the directors then still in office who either were directors at the
beginning of the period or whose election or nomination for election was previously so approved, cease for any reason to constitute at least a majority of the members of the Board; 

iii. the effective date of a merger or consolidation of the Company with any other entity, other than a merger or consolidation that would
result in the voting securities of the Company outstanding immediately prior to such merger or consolidation continuing to represent (either by remaining outstanding or by being converted into voting securities of the surviving entity) more than 51%
of the combined voting power of the voting securities of the surviving entity outstanding immediately after such merger or consolidation and with the power to elect at least a majority of the board of directors or other governing body of such
surviving entity; 
 iv. the approval by the stockholders of the Company of a complete liquidation of the Company or an agreement for the
sale or disposition by the Company of all or substantially all of the Company’s assets; and 
 v. there occurs any other event of a
nature that would be required to be reported in response to Item 6(e) of Schedule 14A of Regulation 14A (or a response to any similar item on any similar schedule or form) promulgated under the Exchange Act, whether or not the Company is then
subject to such reporting requirement. 
 For purposes of this Section 2(b), the following terms shall have the following meanings: 

(A) “Exchange Act” shall mean the Securities Exchange Act of 1934, as amended from time to time. 

(B) “Person” shall have the meaning as set forth in Sections 13(d) and 14(d) of the Exchange Act;
provided, however, that Person shall exclude (i) the Company, (ii) any trustee or other fiduciary holding securities under an employee benefit plan of the Company and (iii) any corporation owned, directly or indirectly,
by the stockholders of the Company in substantially the same proportions as their ownership of stock of the Company. 

  
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 (C) “Beneficial Owner” shall have the meaning given to such term
in Rule 13d-3 under the Exchange Act; provided, however, that Beneficial Owner shall exclude any Person otherwise becoming a Beneficial Owner by reason of the stockholders of the Company
approving a merger of the Company with another entity. 
 (c) “Corporate Status” describes the status of a Person who is or
was a director, trustee, partner, managing member, officer, employee, agent or fiduciary of the Company or of any other corporation, limited liability company, partnership or joint venture, trust or other enterprise which such Person is or was
serving at the request of the Company. 
 (d) “Disinterested Director” shall mean a director of the Company who is not and
was not a party to the Proceeding in respect of which indemnification is sought by Indemnitee. 
 (e) “Enterprise” shall
mean the Company and any other corporation, limited liability company, partnership, joint venture, trust or other enterprise of which Indemnitee is or was serving at the request of the Company as a director, officer, trustee, partner, managing
member, employee, agent or fiduciary. 
 (f) “Expenses” shall include all reasonable attorneys’ fees, retainers, court
costs, transcript costs, fees of experts and other professionals, witness fees, travel expenses, duplicating costs, printing and binding costs, telephone charges, postage, delivery service fees, fax transmission charges, secretarial services, any
federal, state, local or foreign taxes imposed on Indemnitee as a result of the actual or deemed receipt of any payments under this Agreement, ERISA excise taxes and penalties, and all other disbursements, obligations or expenses of the types
customarily incurred in connection with, or as a result of, prosecuting, defending, preparing to prosecute or defend, investigating, being or preparing to be a deponent or witness in or otherwise participating in a Proceeding. Expenses also shall
include (i) Expenses incurred in connection with any appeal resulting from any Proceeding, including, without limitation, the premium, security for and other costs relating to any cost bond, supersedeas bond or other appeal bond or its
equivalent, (ii) expenses incurred in connection with recovery under any directors’ and officers’ liability insurance policies maintained by the Company, regardless of whether Indemnitee is ultimately determined to be entitled to
indemnification, advancement of Expenses or insurance recovery, as the case may be, and (iii) for purposes of Section 14(d) only, Expenses incurred by or on behalf of Indemnitee in connection with the interpretation, enforcement or defense
of Indemnitee’s rights under this Agreement, by litigation or otherwise. Expenses shall not include amounts paid in settlement by Indemnitee or the amount of judgments or fines against Indemnitee. 

(g) “Independent Counsel” shall mean a law firm, or a member of a law firm, that is experienced in matters of corporation law
and neither presently is, nor in the past five years has been, retained to represent: (i) the Company or Indemnitee in any matter material to either such party (other than with respect to matters concerning Indemnitee under this Agreement, or
of other indemnitees under similar indemnification agreements), or (ii) any other party to the Proceeding giving rise to a claim for indemnification hereunder. Notwithstanding the foregoing, the term “Independent Counsel” shall not
include any Person who, under the applicable standards of professional conduct then prevailing, would have a conflict of interest in representing either the Company or Indemnitee in an action to determine Indemnitee’s rights under this
Agreement. The Company agrees to pay the reasonable fees and expenses of the Independent Counsel referred to above. 

  
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 (h) The term “Proceeding” shall include any threatened, pending or completed
action, suit, claim, counterclaim, cross claim, arbitration, mediation, alternate dispute resolution mechanism, investigation, inquiry, administrative hearing or any other actual, threatened or completed proceeding, whether brought in the right of
the Company or otherwise and whether of a civil, criminal, administrative, regulatory, legislative or investigative (formal or informal) nature, including any appeal therefrom, in which Indemnitee was, is or will be involved as a party, potential
party, non-party witness or otherwise by reason of the fact that Indemnitee is or was a director or officer of the Company, by reason of any action taken by him or her (or a failure to take action by him or
her) or of any action (or failure to act) on his or her part while acting pursuant to his or her Corporate Status, in each case whether or not serving in such capacity at the time any liability or Expense is incurred for which indemnification,
reimbursement or advancement of Expenses can be provided under this Agreement. If Indemnitee believes in good faith that a given situation may lead to or culminate in the institution of a Proceeding, this shall be considered a Proceeding under this
paragraph. 
 (i) Reference to “other enterprise” shall include employee benefit plans; references to
“fines” shall include any excise tax assessed with respect to any employee benefit plan; references to “serving at the request of the Company” shall include any service as a director, officer, employee or agent of
the Company that imposes duties on, or involves services by, such director, officer, employee or agent with respect to an employee benefit plan, its participants or beneficiaries; and a person who acted in good faith and in a manner he or she
reasonably believed to be in the best interests of the participants and beneficiaries of an employee benefit plan shall be deemed to have acted in a manner “not opposed to the best interests of the Company” as referred to in this
Agreement. 
 Section 3. Indemnity in Third-Party Proceedings. The Company shall indemnify Indemnitee in accordance with the
provisions of this Section 3 if Indemnitee is, or is threatened to be made, a party to or a participant in any Proceeding, other than a Proceeding by or in the right of the Company to procure a judgment in its favor. Pursuant to this
Section 3, Indemnitee shall be indemnified to the fullest extent permitted by applicable law against all Expenses, judgments, liabilities, fines, penalties and amounts paid in settlement (including all interest, assessments and other charges
paid or payable in connection with or in respect of such Expenses, judgments, liabilities, fines, penalties and amounts paid in settlement) actually and reasonably incurred by Indemnitee or on his or her behalf in connection with such Proceeding or
any claim, issue or matter therein, if Indemnitee acted in good faith and in a manner he or she reasonably believed to be in or not opposed to the best interests of the Company and, in the case of a criminal Proceeding, had no reasonable cause to
believe that his or her conduct was unlawful. The parties hereto intend that this Agreement, to the fullest extent permitted by law, shall provide for indemnification in excess of that expressly permitted by statute, including, without limitation,
any indemnification provided by the Certificate of Incorporation, the Bylaws, vote of its stockholders or Disinterested Directors or applicable law. 

Section 4. Indemnity in Proceedings by or in the Right of the Company. The Company shall indemnify Indemnitee in accordance with
the provisions of this Section 4 if Indemnitee is, or is threatened to be made, a party to or a participant in any Proceeding by or in the right of the 

  
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Company to procure a judgment in its favor. Pursuant to this Section 4, Indemnitee shall be indemnified to the fullest extent permitted by applicable law against all Expenses actually and
reasonably incurred by him or her or on his or her behalf in connection with such Proceeding or any claim, issue or matter therein, if Indemnitee acted in good faith and in a manner he or she reasonably believed to be in or not opposed to the best
interests of the Company. If applicable law so provides, no indemnification for Expenses shall be made under this Section 4 in respect of any claim, issue or matter as to which Indemnitee shall have been finally adjudged by a court to be liable
to the Company, unless and only to the extent that the Delaware Court of Chancery or any court in which the Proceeding was brought shall determine upon application that, despite the adjudication of liability but in view of all the circumstances of
the case, Indemnitee is fairly and reasonably entitled to indemnification. 
 Section 5. Indemnification for Expenses of a Party Who
is Wholly or Partly Successful. Notwithstanding any other provisions of this Agreement, to the fullest extent permitted by applicable law and to the extent that Indemnitee is a party to (or a participant in) and is successful, on the merits or
otherwise, in any Proceeding or in defense of any claim, issue or matter therein, in whole or in part, the Company shall indemnify Indemnitee against all Expenses actually and reasonably incurred by him or her or on his or her behalf in connection
therewith. If Indemnitee is not wholly successful in such Proceeding but is successful, on the merits or otherwise, as to one or more but less than all claims, issues or matters in such Proceeding, the Company shall indemnify Indemnitee against all
Expenses actually and reasonably incurred by him or her or on his or her behalf in connection with or related to each successfully resolved claim, issue or matter to the fullest extent permitted by law. For purposes of this Section 5 and
without limitation, the termination of any claim, issue or matter in such a Proceeding by dismissal, with or without prejudice, shall be deemed to be a successful result as to such claim, issue or matter. 

Section 6. Indemnification For Expenses of a Witness. Notwithstanding any other provision of this Agreement, to the fullest extent
permitted by applicable law and to the extent that Indemnitee is, by reason of his or her Corporate Status, a witness or otherwise asked to participate in any aspect of a Proceeding to which Indemnitee is not a party, he or she shall be indemnified
against all Expenses actually and reasonably incurred by him or her or on his or her behalf in connection therewith. 
 Section 7.
Partial Indemnification. If Indemnitee is entitled under any provision of this Agreement to indemnification by the Company for some or a portion of Expenses, but not, however, for the total amount thereof, the Company shall nevertheless
indemnify Indemnitee for the portion thereof to which Indemnitee is entitled. 
 Section 8. Additional Indemnification. 

(a) Notwithstanding any limitation in Sections 3, 4 or 5, the Company shall indemnify Indemnitee to the fullest extent permitted by applicable
law if Indemnitee is a party to or threatened to be made a party to or a participant in any Proceeding (including a Proceeding by or in the right of the Company to procure a judgment in its favor) against all Expenses, judgments, fines and amounts
paid in settlement (including all interest, assessments and other charges paid or payable in connection with or in respect of such Expenses, judgments, fines and amounts paid in settlement) actually and reasonably incurred by or on behalf of
Indemnitee in connection with the Proceeding. 

  
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 (b) For purposes of Section 8(a), the meaning of the phrase “to the fullest extent
permitted by applicable law” shall include, but not be limited to: 
 i. to the fullest extent permitted by the provision of the
DGCL that authorizes or contemplates additional indemnification by agreement, or the corresponding provision of any amendment to or replacement of the DGCL; and 

ii. to the fullest extent authorized or permitted by any amendments to or replacements of the DGCL adopted after the date of this Agreement
that increase the extent to which a corporation may indemnify its officers and directors. 
 Section 9. Exclusions.
Notwithstanding any provision in this Agreement, the Company shall not be obligated under this Agreement to make any indemnification payment in connection with any claim made against Indemnitee: 

(a) for which payment has actually been made to or on behalf of Indemnitee under any insurance policy or other indemnity provision, except to
the extent such payment is insufficient to satisfy the Indemnitee’s right to indemnification hereunder; or 
 (b) for (i) an
accounting of profits made from the purchase and sale (or sale and purchase) by Indemnitee of securities of the Company within the meaning of Section 16(b) of the Exchange Act or similar provisions of state statutory law or common law, or
(ii) any reimbursement of the Company by Indemnitee of any bonus or other incentive-based or equity-based compensation or of any profits realized by Indemnitee from the sale of securities of the Company, as required in each case under the
Exchange Act (including any such reimbursements that arise from an accounting restatement of the Company pursuant to Section 304 of the Sarbanes-Oxley Act of 2002 (the “Sarbanes-Oxley Act”), or the payment to the Company of
profits arising from the purchase and sale by Indemnitee of securities in violation of Section 306 of the Sarbanes-Oxley Act); or 

(c) except as provided in Section 14(d) of this Agreement, in connection with any Proceeding (or any part of any Proceeding) initiated by
Indemnitee, including any Proceeding (or any part of any Proceeding) initiated by Indemnitee against the Company or its directors, officers, employees or other indemnitees, unless (i) the Board authorized the Proceeding (or any part of any
Proceeding) prior to its initiation, (ii) such payment arises in connection with any mandatory counterclaim or cross-claim or affirmative defense brought or raised by Indemnitee in any Proceeding (or any part of any Proceeding), or
(iii) the Company provides the indemnification, in its sole discretion, pursuant to the powers vested in the Company under applicable law. 

Section 10. Advances of Expenses. Notwithstanding any provision of this Agreement to the contrary (other than Section 14(d)),
the Company shall advance, to the extent not prohibited by law, the Expenses incurred by or on behalf of Indemnitee in connection with any Proceeding (or any part of any Proceeding) not initiated by Indemnitee, and such advancement shall be made
within 30 days after the receipt by the Company of a statement or statements requesting such advances from time to time (which shall include invoices received by Indemnitee in connection 

  
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with such Expenses but, in the case of invoices in connection with legal services, any references to legal work performed or to expenditures made that would cause Indemnitee to waive any
privilege accorded by applicable law shall not be so included), whether prior to or after final disposition of any Proceeding. Advances shall be unsecured and interest-free. Advances shall be made without regard to Indemnitee’s ability to repay
the Expenses and without regard to Indemnitee’s ultimate entitlement to indemnification under the other provisions of this Agreement. In accordance with Section 14(d), advances shall include any and all reasonable Expenses incurred
pursuing an action to enforce this right of advancement, including Expenses incurred preparing and forwarding statements to the Company to support the advances claimed. Indemnitee shall qualify for advances upon the execution and delivery to the
Company of this Agreement, which shall constitute an undertaking providing that Indemnitee undertakes to repay the amounts advanced (without interest) to the extent that it is ultimately determined that Indemnitee is not entitled to be indemnified
by the Company. No other form of undertaking shall be required other than the execution of this Agreement. This Section 10 shall not apply to any claim made by Indemnitee for which indemnity is excluded pursuant to Section 9. 

Section 11. Procedure for Notification and Defense of Claim. 

(a) Indemnitee shall notify the Company in writing of any matter with respect to which Indemnitee intends to seek indemnification or
advancement of Expenses hereunder as soon as reasonably practicable following the receipt by Indemnitee of written notice thereof or Indemnitee’s becoming aware thereof. The written notification to the Company shall include a description of the
nature of the Proceeding and the facts underlying the Proceeding, in each case, to the extent known to Indemnitee. To obtain indemnification under this Agreement, Indemnitee shall submit to the Company a written request, including therein or
therewith such documentation and information as is reasonably available to Indemnitee and is reasonably necessary to determine whether and to what extent Indemnitee is entitled to indemnification following the final disposition of such Proceeding.
The failure by Indemnitee to notify the Company hereunder will not relieve the Company from any liability that it may have to Indemnitee hereunder or otherwise than under this Agreement, and any delay in so notifying the Company shall not constitute
a waiver by Indemnitee of any rights under this Agreement, except to the extent (solely with respect to the indemnity hereunder) that such failure or delay materially prejudices the Company. The Chief Financial Officer of the Company shall, promptly
upon receipt of such a request for indemnification, advise the Board in writing that Indemnitee has requested indemnification. 
 (b) The
Company will be entitled to participate in the Proceeding at its own expense. 
 (c) The Company shall not settle any Proceeding (in whole
or in part) if such settlement would impose any Expense, judgment, liability, fine, penalty or limitation on Indemnitee for which Indemnitee is not entitled to be indemnified hereunder without Indemnitee’s prior written consent. 

Section 12. Procedure Upon Application for Indemnification. 

(a) Upon written request by Indemnitee for indemnification pursuant to Section 11(a), a determination, if required by applicable law, with
respect to Indemnitee’s entitlement thereto shall be made in the specific case: (i) if a Change in Control shall have occurred, by Independent Counsel in a written opinion to the Board, a copy of which shall be delivered to Indemnitee; or

  
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(ii) if a Change in Control shall not have occurred, (A) by a majority vote of the Disinterested Directors, even though less than a quorum of the Board, (B) by a committee of
Disinterested Directors designated by a majority vote of the Disinterested Directors, even though less than a quorum of the Board, (C) if there are no such Disinterested Directors or, if such Disinterested Directors so direct, by Independent
Counsel in a written opinion to the Board, a copy of which shall be delivered to Indemnitee or (D) if so directed by the Board, by the stockholders of the Company; and, if it is so determined that Indemnitee is entitled to indemnification,
payment to Indemnitee shall be made within 10 days after such determination. Indemnitee shall cooperate with the person, persons or entity making such determination with respect to Indemnitee’s entitlement to indemnification, including
providing to such person, persons or entity upon reasonable advance request any documentation or information that is not privileged or otherwise protected from disclosure and that is reasonably available to Indemnitee and reasonably necessary to
such determination. Any costs or Expenses (including attorneys’ fees and disbursements) incurred by or on behalf of Indemnitee in so cooperating with the person, persons or entity making such determination shall be borne by the Company
(irrespective of the determination as to Indemnitee’s entitlement to indemnification) and the Company hereby indemnifies and agrees to hold Indemnitee harmless therefrom. The Company promptly will advise Indemnitee in writing with respect to
any determination that Indemnitee is or is not entitled to indemnification, including a description of any reason or basis for which indemnification has been denied. 

(b) In the event the determination of entitlement to indemnification is to be made by Independent Counsel pursuant to Section 12(a)
hereof, the Independent Counsel shall be selected as provided in this Section 12(b). If a Change in Control shall not have occurred, the Independent Counsel shall be selected by the Board, and the Company shall give written notice to Indemnitee
advising him or her of the identity of the Independent Counsel so selected. If a Change in Control shall have occurred, the Independent Counsel shall be selected by Indemnitee (unless Indemnitee shall request that such selection be made by the
Board, in which event the preceding sentence shall apply), and Indemnitee shall give written notice to the Company advising it of the identity of the Independent Counsel so selected. In either event, Indemnitee or the Company, as the case may be,
may, within 10 days after such written notice of selection shall have been given, deliver to the Company or to Indemnitee, as the case may be, a written objection to such selection; provided, however, that such objection may be
asserted only on the ground that the Independent Counsel so selected does not meet the requirements of “Independent Counsel” as defined in Section 2 of this Agreement, and the objection shall set forth with particularity the factual
basis of such assertion. Absent a proper and timely objection, the Person so selected shall act as Independent Counsel. If such written objection is so made and substantiated, the Independent Counsel so selected may not serve as Independent Counsel
unless and until such objection is withdrawn or the Delaware Court has determined that such objection is without merit. If, within 20 days after the later of submission by Indemnitee of a written request for indemnification pursuant to
Section 11(a) hereof and the final disposition of the Proceeding, no Independent Counsel shall have been selected and not objected to, either the Company or Indemnitee may petition the Delaware Court for resolution of any objection that shall
have been made by the Company or Indemnitee to the other’s selection of Independent Counsel and/or for the appointment as Independent Counsel of a Person selected by such court or by such other Person as such court shall designate, and the
Person with respect to whom all objections are so resolved or the Person so appointed shall act as Independent Counsel under Section 12(a) hereof. 

  
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 Upon the due commencement of any judicial proceeding or arbitration pursuant to Section 14(a) of this
Agreement, Independent Counsel shall be discharged and relieved of any further responsibility in such capacity (subject to the applicable standards of professional conduct then prevailing). 

(c) If the Company disputes a portion of the amounts for which indemnification is requested, the undisputed portion shall be paid and only the
disputed portion withheld pending resolution of any such dispute. 
 Section 13. Presumptions and Effect of Certain Proceedings.

 (a) In making a determination with respect to entitlement to indemnification hereunder, the person or persons or entity making such
determination shall, to the fullest extent not prohibited by law, presume that Indemnitee is entitled to indemnification under this Agreement if Indemnitee has submitted a request for indemnification in accordance with Section 11(a) of this
Agreement, and the Company shall, to the fullest extent not prohibited by law, have the burden of proof to overcome that presumption in connection with the making by any person, persons or entity of any determination contrary to that presumption.
Neither the failure of the Company (including by its directors or Independent Counsel) to have made a determination prior to the commencement of any action pursuant to this Agreement that indemnification is proper in the circumstances because
Indemnitee has met the applicable standard of conduct, nor an actual determination by the Company (including by its directors or Independent Counsel) that Indemnitee has not met such applicable standard of conduct, shall be a defense to the action
or create a presumption that Indemnitee has not met the applicable standard of conduct. 
 (b) Subject to Section 14(e), if the person,
persons or entity empowered or selected under Section 12 of this Agreement to determine whether Indemnitee is entitled to indemnification shall not have made a determination within 60 days after receipt by the Company of the request therefor,
the requisite determination of entitlement to indemnification shall, to the fullest extent not prohibited by law, be deemed to have been made and Indemnitee shall be entitled to such indemnification, absent (i) a misstatement by Indemnitee of a
material fact, or an omission of a material fact necessary to make Indemnitee’s statement not materially misleading, in connection with the request for indemnification, or (ii) a prohibition of such indemnification under applicable law;
provided, however, that such 60-day period may be extended for a reasonable time, not to exceed an additional 30 days, if the person, persons or entity making the determination with respect to
entitlement to indemnification in good faith requires such additional time for the obtaining or evaluating of documentation and/or information relating thereto; and provided, further, that the foregoing provisions of this
Section 13(b) shall not apply (i) if the determination of entitlement to indemnification is to be made by the stockholders pursuant to Section 12(a) of this Agreement and if (A) within 15 days after receipt by the Company of the
request for such determination the Board has resolved to submit such determination to the stockholders for their consideration at an annual meeting thereof to be held within 75 days after such receipt and such determination is made thereat, or
(B) a special meeting of stockholders is called within 15 days after such receipt for the purpose of making such determination, such meeting is held for such purpose within 60 days after having been so called and such determination is made
thereat, or (ii) if the determination of entitlement to indemnification is to be made by Independent Counsel pursuant to Section 12(a) of this Agreement. 

  
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 (c) The termination of any Proceeding or of any claim, issue or matter therein, by judgment,
order, settlement or conviction, or upon a plea of nolo contendere or its equivalent, shall not (except as otherwise expressly provided in this Agreement) of itself adversely affect the right of Indemnitee to indemnification or create
a presumption that Indemnitee did not act in good faith and in a manner which he or she reasonably believed to be in or not opposed to the best interests of the Company or, with respect to any criminal Proceeding, that Indemnitee had reasonable
cause to believe that his or her conduct was unlawful. 
 (d) For purposes of any determination of good faith, Indemnitee shall be deemed to
have acted in good faith if Indemnitee’s action is based on the records or books of account of the Enterprise, including financial statements, or on information supplied to Indemnitee by the directors or officers of the Enterprise in the course
of their duties, or on the advice of legal counsel for the Enterprise or on information or records given or reports made to the Enterprise by an independent certified public accountant or by an appraiser or other expert selected with the reasonable
care by the Enterprise. The provisions of this Section 13(d) shall not be deemed to be exclusive or to limit in any way the other circumstances in which Indemnitee may be deemed to have met the applicable standard of conduct set forth in this
Agreement. Whether or not the foregoing provisions of this Section 13(d) are satisfied, it shall in any event be presumed that Indemnitee has at all times acted in good faith and in a manner he or she reasonably believed to be in or not opposed
to the best interests of the Company. 
 (e) The knowledge and/or actions, or failure to act, of any director, officer, trustee, partner,
managing member, fiduciary, agent or employee of the Enterprise shall not be imputed to Indemnitee for purposes of determining the right to indemnification under this Agreement. 

Section 14. Remedies of Indemnitee. 

(a) Subject to Section 14(e), in the event that (i) a determination is made pursuant to Section 12 of this Agreement that
Indemnitee is not entitled to indemnification under this Agreement, (ii) advancement of Expenses is not timely made pursuant to Section 10 of this Agreement, (iii) no determination of entitlement to indemnification shall have been
made pursuant to Section 12(a) of this Agreement within 90 days after receipt by the Company of the request for indemnification, (iv) payment of indemnification is not made pursuant to Section 5, 6 or 7 or the last sentence of
Section 12(a) of this Agreement within 10 days after receipt by the Company of a written request therefor, (v) payment of indemnification pursuant to Section 3, 4 or 8 of this Agreement is not made within 10 days after a determination
has been made that Indemnitee is entitled to indemnification, or (vi) the Company or any other Person takes or threatens to take any action to declare this Agreement void or unenforceable, or institutes any litigation or other action or
Proceeding designed to deny, or to recover from, Indemnitee the benefits provided or intended to be provided to Indemnitee hereunder, Indemnitee shall be entitled to an adjudication by a court of his or her entitlement to such indemnification or
advancement of Expenses. Alternatively, Indemnitee, at his or her option, may seek an award in arbitration to be conducted by a single arbitrator pursuant to the Commercial Arbitration Rules of the American Arbitration Association. Indemnitee shall
commence such proceeding seeking an adjudication or an award in arbitration within 180 days following the date on which Indemnitee 

  
 11 

 
first has the right to commence such proceeding pursuant to this Section 14(a); provided, however, that the foregoing clause shall not apply in respect of a proceeding brought
by Indemnitee to enforce his or her rights under Section 5 of this Agreement. The Company shall not oppose Indemnitee’s right to seek any such adjudication or award in arbitration. 

(b) In the event that a determination shall have been made pursuant to Section 12(a) of this Agreement that Indemnitee is not entitled to
indemnification, any judicial proceeding or arbitration commenced pursuant to this Section 14 shall be conducted in all respects as a de novo trial, or arbitration, on the merits and Indemnitee shall not be prejudiced by reason of
that adverse determination. In any judicial proceeding or arbitration commenced pursuant to this Section 14 the Company shall have the burden of proving Indemnitee is not entitled to indemnification or advancement of Expenses, as the case may
be. 
 (c) If a determination shall have been made pursuant to Section 12(a) of this Agreement that Indemnitee is entitled to
indemnification, the Company shall be bound by such determination in any judicial proceeding or arbitration commenced pursuant to this Section 14, absent (i) a misstatement by Indemnitee of a material fact, or an omission of a material
fact necessary to make Indemnitee’s statement not materially misleading, in connection with the request for indemnification, or (ii) a prohibition of such indemnification under applicable law. 

(d) The Company shall, to the fullest extent not prohibited by law, be precluded from asserting in any judicial proceeding or arbitration
commenced pursuant to this Section 14 that the procedures and presumptions of this Agreement are not valid, binding and enforceable and shall stipulate in any such court or before any such arbitrator that the Company is bound by all the
provisions of this Agreement. It is the intent of the Company that, to the fullest extent permitted by law, Indemnitee not be required to incur legal fees or other Expenses associated with the interpretation, enforcement or defense of
Indemnitee’s rights under this Agreement by litigation or otherwise because the cost and expense thereof would substantially detract from the benefits intended to be extended to Indemnitee hereunder. The Company shall, to the fullest extent
permitted by law, indemnify Indemnitee against any and all Expenses and, if requested by Indemnitee, shall (within 10 days after receipt by the Company of a written request therefor) advance, to the extent not prohibited by law, such Expenses to
Indemnitee, which are incurred by or on behalf of Indemnitee in connection with any action brought by Indemnitee for indemnification or advancement of Expenses from the Company under this Agreement or under any directors’ and officers’
liability insurance policies maintained by the Company if, in the case of indemnification, Indemnitee is wholly successful on the underlying claims; if Indemnitee is not wholly successful on the underlying claims, then such indemnification shall be
only to the extent Indemnitee is successful on such underlying claims or otherwise as permitted by law, whichever is greater. 
 (e)
Notwithstanding anything in this Agreement to the contrary, no determination as to entitlement of Indemnitee to indemnification under this Agreement shall be required to be made prior to the final disposition of the Proceeding. 

Section 15. Non-exclusivity; Survival of Rights; Insurance; Subrogation. 

(a) The rights of indemnification and to receive advancement of Expenses as provided by this Agreement (i) shall not be deemed exclusive
of any other rights to which Indemnitee may 

  
 12 

 
at any time be entitled under applicable law, the Certificate of Incorporation, the Bylaws, any agreement, a vote of stockholders or a resolution of the Board, or otherwise and (ii) shall be
interpreted independently of, and without reference to, any other such rights to which Indemnitee may at any time be entitled. No amendment, alteration or repeal of this Agreement or of any provision hereof shall limit or restrict any right of
Indemnitee under this Agreement in respect of any action taken or omitted by such Indemnitee in his or her Corporate Status prior to such amendment, alteration or repeal. To the extent that a change in Delaware law, whether by statute or judicial
decision, permits greater indemnification or advancement of Expenses than would be afforded currently under the Bylaws, Certificate of Incorporation and this Agreement, it is the intent of the parties hereto that Indemnitee shall enjoy by this
Agreement the greater benefits so afforded by such change. No right or remedy herein conferred is intended to be exclusive of any other right or remedy, and every other right and remedy shall be cumulative and in addition to every other right and
remedy given hereunder or now or hereafter existing at law or in equity or otherwise. The assertion or employment of any right or remedy hereunder, or otherwise, shall not prevent the concurrent assertion or employment of any other right or remedy.

 (b) To the extent that the Company maintains an insurance policy or policies providing liability insurance for directors, officers,
employees, or agents of the Enterprise, Indemnitee shall be covered by such policy or policies in accordance with its or their terms to the maximum extent of the coverage available for any such director, officer, employee or agent under such policy
or policies. If, at the time of the receipt of a notice of a claim pursuant to the terms hereof, the Company has director and officer liability insurance in effect, the Company shall give prompt notice of such claim or of the commencement of a
Proceeding, as the case may be, to the insurers in accordance with the procedures set forth in the respective policies. The Company shall thereafter take all necessary or desirable action to cause such insurers to pay, on behalf of Indemnitee, all
amounts payable as a result of such Proceeding in accordance with the terms of such policies. 
 (c) In the event of any payment under this
Agreement, the Company shall be subrogated to the extent of such payment to all of the rights of recovery of Indemnitee, [(other than any rights of recovery of Indemnitee from a Fund Indemnitor (as defined in Section 15(e) hereof) or under any
insurance provided by the Fund or its affiliates)] who shall execute all papers required and take all action necessary to secure such rights, including execution of such documents as are necessary to enable the Company to bring suit to enforce such
rights. 
 (d) [Except as provided for under Section 15(e) of this Agreement, the] The Company shall not be liable under this Agreement
to make any payment of amounts otherwise indemnifiable (or for which advancement is provided hereunder) hereunder if and to the extent that Indemnitee has otherwise actually received such payment under any insurance policy, contract, agreement or
otherwise.] 
 (e)[The Company hereby acknowledges that Indemnitee has certain rights to indemnification, advancement of expenses and/or
insurance provided by the Fund and certain of its affiliates (collectively, the “Fund Indemnitors”). The Company hereby agrees (i) that it is the indemnitor of first resort (i.e., its obligations to Indemnitee are primary and any
obligation of the Fund Indemnitors to advance expenses or to provide indemnification for the same expenses or liabilities incurred by Indemnitee are secondary), (ii) that it shall be required to advance the full amount of Expenses incurred by
Indemnitee and shall be liable for the full amount of all 

  
 13 

 
Expenses, judgments, penalties, fines and amounts paid in settlement to the extent legally permitted and as required by the Certificate of Incorporation or Bylaws (or any agreement between the
Company and Indemnitee), without regard to any rights Indemnitee may have against the Fund Indemnitors, and, (iii) that it irrevocably waives, relinquishes and releases the Fund Indemnitors from any and all claims against the Fund Indemnitors
for contribution, subrogation or any other recovery of any kind in respect thereof. The Company further agrees that no advancement or payment by the Fund Indemnitors on behalf of Indemnitee with respect to any claim for which Indemnitee has sought
indemnification from the Company shall affect the foregoing and the Fund Indemnitors shall have a right of contribution and/or be subrogated to the extent of such advancement or payment to all of the rights of recovery of Indemnitee against the
Company. The Company and Indemnitee agree that the Fund Indemnitors are express third party beneficiaries of the terms hereof.]] 
 (f) The
Company’s obligation to indemnify or advance Expenses hereunder to Indemnitee who is or was serving at the request of the Company as a director, officer, trustee, partner, managing member, fiduciary, employee or agent of any other corporation,
limited liability company, partnership, joint venture, trust, employee benefit plan or other enterprise shall be reduced by any amount Indemnitee has actually received as indemnification or advancement of Expenses from such other corporation,
limited liability company, partnership, joint venture, trust, employee benefit plan or other enterprise. 
 Section 16. Duration of
Agreement. This Agreement shall continue until and terminate upon the later of (a) 10 years after the date that Indemnitee shall have ceased to serve as a director or officer, as applicable, of the Company or (b) one year after the
final termination of any Proceeding then pending in respect of which Indemnitee is granted rights of indemnification or advancement of Expenses hereunder and of any Proceeding (including any appeal) commenced by Indemnitee pursuant to
Section 14 of this Agreement [or by a Fund Indemnitor pursuant to Section 15(e) of this Agreement, in either case,] relating thereto. The indemnification and advancement of Expenses rights provided by or granted pursuant to this Agreement
shall be binding upon and be enforceable by the parties hereto and their respective successors and assigns (including any direct or indirect successor by purchase, merger, consolidation or otherwise to all or substantially all of the business or
assets of the Company), shall continue as to an Indemnitee who has ceased to be a director, officer, employee or agent of the Company or of any other Enterprise, and shall inure to the benefit of Indemnitee and his or her spouse, assigns, heirs,
devisees, executors and administrators and other legal representatives. The Company shall require and shall cause any successor (whether direct or indirect by purchase, merger, consolidation or otherwise) to all or substantially all of the business
or assets of the Company to, by written agreement, expressly assume and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform if no such succession had taken place. 

Section 17. Severability. If any provision or provisions of this Agreement shall be held to be invalid, illegal or unenforceable
for any reason whatsoever, then: (a) the validity, legality and enforceability of the remaining provisions of this Agreement (including, without limitation, each portion of any Section of this Agreement containing any such provision held to be
invalid, illegal or unenforceable, that is not itself invalid, illegal or unenforceable) shall not in any way be affected or impaired thereby and shall remain enforceable to the fullest extent permitted by law; (b) such provision or provisions
shall be deemed reformed to the extent necessary to conform to 

  
 14 

 
applicable law and to give the maximum effect to the intent of the parties hereto; and (c) to the fullest extent possible, the provisions of this Agreement (including, without limitation,
each portion of any Section of this Agreement containing any such provision held to be invalid, illegal or unenforceable, that is not itself invalid, illegal or unenforceable) shall be construed so as to give effect to the intent manifested thereby.

 Section 18. Enforcement. 

(a) The Company expressly confirms and agrees that it has entered into this Agreement and assumed the obligations imposed on it hereby in order
to induce Indemnitee to serve as a director or officer of the Company, and the Company acknowledges that Indemnitee is relying upon this Agreement in serving as a director or officer of the Company. 

(b) This Agreement constitutes the entire agreement between the parties hereto with respect to the subject matter hereof and supersedes all
prior agreements and understandings, oral, written and implied, between the parties hereto with respect to the subject matter hereof; provided, however, that this Agreement is a supplement to and in furtherance of the Certificate of
Incorporation, the Bylaws, any directors’ and officers’ insurance maintained by the Company and applicable law, and shall not be deemed a substitute therefor, nor to diminish or abrogate any rights of Indemnitee thereunder. 

Section 19. Modification and Waiver. No supplement, modification or amendment of this Agreement shall be binding unless executed
in writing by the parties hereto. No waiver of any of the provisions of this Agreement shall be deemed or shall constitute a waiver of any other provisions of this Agreement nor shall any waiver constitute a continuing waiver. 

Section 20. Notice by Indemnitee. Indemnitee agrees promptly to notify the Company in writing upon being served with any summons,
citation, subpoena, complaint, indictment, information or other document relating to any Proceeding or matter which may be subject to indemnification or advancement of Expenses covered hereunder. The failure of Indemnitee to so notify the Company
shall not relieve the Company of any obligation which it may have to Indemnitee under this Agreement or otherwise, except to the extent that such failure materially prejudices the Company. 

Section 21. Notices. All notices, requests, demands and other communications under this Agreement shall be in writing and shall be
deemed to have been duly given if (a) delivered by hand and receipted for by the party to whom said notice or other communication shall have been directed, (b) mailed by certified or registered mail with postage prepaid, on the third
business day after the date on which it is so mailed, or (c) sent by reputable overnight courier and receipted for by the party to whom said notice or other communication shall have been directed: 

(a) If to Indemnitee, at the address indicated on the signature page of this Agreement, or such other address as Indemnitee shall provide to
the Company. 
 (b) If to the Company to: 

Solid Biosciences, Inc. 

                       
                              

                       
                              

Attention: Chief Financial Officer 

  
 15 

 or to any other address as may have been furnished to Indemnitee by the Company. 

Section 22. Contribution. To the fullest extent permissible under applicable law, if the indemnification provided for in this
Agreement is unavailable to Indemnitee for any reason whatsoever, the Company, in lieu of indemnifying Indemnitee, shall contribute to the amount incurred by or on behalf of Indemnitee, whether for judgments, fines, penalties, excise taxes, amounts
paid or to be paid in settlement and/or for Expenses, in connection with any claim relating to an indemnifiable event under this Agreement, in such proportion as is deemed fair and reasonable in light of all of the circumstances of such Proceeding
in order to reflect (i) the relative benefits received by the Company and Indemnitee as a result of the event(s) and/or transaction(s) giving cause to such Proceeding; and/or (ii) the relative fault of the Company (and its directors,
officers, employees and agents) and Indemnitee in connection with such event(s) and/or transaction(s). 
 Section 23. Applicable Law
and Consent to Jurisdiction. This Agreement and the legal relations among the parties shall be governed by, and construed and enforced in accordance with, the laws of the State of Delaware, without regard to its conflict of laws rules. Except
with respect to any arbitration commenced by Indemnitee pursuant to Section 14(a) of this Agreement, the Company and Indemnitee hereby irrevocably and unconditionally (i) agree that any action or proceeding arising out of or in connection
with this Agreement shall be brought only in the Chancery Court of the State of Delaware (the “Delaware Court”), and not in any other state or federal court in the United States of America or any court in any other country,
(ii) consent to submit to the exclusive jurisdiction of the Delaware Court for purposes of any action or proceeding arising out of or in connection with this Agreement, (iii) waive any objection to the laying of venue of any such action or
proceeding in the Delaware Court and (iv) waive, and agree not to plead or to make, any claim that any such action or proceeding brought in the Delaware Court has been brought in an improper or inconvenient forum. 

Section 24. Identical Counterparts. This Agreement may be executed in one or more counterparts, each of which shall for all
purposes be deemed to be an original but all of which together shall constitute one and the same Agreement. Only one such counterpart signed by the party against whom enforceability is sought needs to be produced to evidence the existence of this
Agreement. 
 Section 25. Miscellaneous. Use of the masculine pronoun shall be deemed to include usage of the feminine pronoun
where appropriate. The headings of this Agreement are inserted for convenience only and shall not be deemed to constitute part of this Agreement or to affect the construction thereof. 

- Signature Page Follows - 

  
 16 

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

									
	SOLID BIOSCIENCES INC.	 	INDEMNITEE

									
					
	By:	 	  
	 		 	By:        	 	  

		 	Name:	 		 	Name:
		 	Title:	 		 	Address:

 [Signature Page – Indemnification Agreement]EX-10.17

 Exhibit 10.17 

AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT 

This Amended and Restated Registration Rights Agreement (this “Agreement”) dated as of March 29, 2017, is made by and among Solid
Biosciences, LLC, a Delaware limited liability company (“Solid”), and the persons listed on Schedule A (each, an “Investor”). 

RECITALS 
 WHEREAS,
certain of the Investors (the “Solid Existing Investors”) hold Preferred Units and/or Series A Common Units of Solid and possess certain rights pursuant to a Registration Rights Agreement dated as of December 27, 2013, among Solid
(under its former name, Solid Ventures, LLC) and such Investors (the “Solid Prior Agreement”); and 
 WHEREAS, certain of the
Investors (the “GT Existing Investors”) hold Class A Voting Units, Class B Non-Voting Units and/or Class D Voting Units of Solid GT, LLC, a Delaware limited liability company
(“GT”), and possess certain rights pursuant to Section 11.1(c) of the Second Amended and Restated Limited Liability Company Agreement of GT dated as of November 2, 2015, between GT and such Investors (the “GT Prior
Rights”); and 
 WHEREAS, GT is being merged with and into Solid; and 

WHEREAS, the Solid Existing Investors are holders of a majority of the voting power of the Registrable Securities (as defined in the Solid
Prior Agreement) of Solid, and desire to amend and restate the Solid Prior Agreement in its entirety and to accept the rights and obligations created pursuant to this Agreement in lieu of the rights and obligations of the Solid Existing Investors
under the Solid Prior Agreement; and 
 WHEREAS, the GT Existing Investors and certain of the other parties to this Agreement have the right
to terminate the GT Prior Rights and replace them with rights and obligations pursuant to this Agreement; and 
 WHEREAS, certain of the
Investors are parties to that certain Senior Preferred Units Purchase Agreement of even date herewith between Solid and such Investors, under which certain of Solid’s and such Investors’ obligations are conditioned upon the execution and
delivery of this Agreement by such Investors, certain Solid Existing Investors, certain GT Existing Investors and Solid; 
 NOW, THEREFORE,
the Solid Existing Investors hereby agree that the Solid Prior Agreement shall be amended and restated, the GT Existing Investors hereby agree that the GT Prior Rights shall be terminated, and the parties to this Agreement further agree as follows:

 1.    REGISTRATION RIGHTS. Solid and the Investors covenant and agree as follows:

 Definitions. The following terms shall have the following respective meanings (such meanings being equally applicable to both the
singular and plural form of the terms defined): 
 “Commission” shall mean the Securities and Exchange Commission or any
other federal agency then administering the Securities Act and other federal securities laws. 

 “Common Shares” shall mean the shares of the common stock of the Company owned
by the Investors. 
 “Company” shall mean any corporation into which Solid converts. 

“Exchange Act” shall mean the Securities Exchange Act of 1934, as amended, or any similar federal statute, and the rules and
regulations of the Commission thereunder, all as the same shall be in effect from time to time. 
 “Form S-3” shall mean such form under the Securities Act as in effect on the date hereof or any successor registration form under the Securities Act subsequently adopted by the Commission which permits inclusion
or incorporation of substantial information by reference to other documents filed by the Company with the Commission. 

“Holders” shall mean any Person owning or having the right to acquire Registrable Securities, or any assignee thereof in
accordance with Section 1.9. 
 “Investors” shall have the meaning set forth in the first paragraph of this Agreement.

 “Person” shall mean an individual, partnership, limited liability company, corporation, joint venture, association,
trust or any other entity or organization. 
 “Prospectus” shall mean the prospectus included in any Registration
Statement, as amended or supplemented by any prospectus supplement with respect to the terms of the offering of any portion of the Registrable Securities covered by such Registration Statement and by all other amendments and supplements to the
prospectus, including post-effective amendments and all material incorporated by reference in such prospectus. 
 “Qualified
IPO” shall mean the first registration statement for an underwritten public offering of common stock of the Company pursuant to Section 1.1(b), (i) at a price per share of common stock of not less than twenty dollars ($20.00)
(appropriately adjusted for splits, dividends, combinations, recapitalizations and the like), and (ii) with respect to which the Company receives aggregate gross proceeds attributable to sales for the account of the Company of not less than
twenty million dollars ($20 million). 
 “Registrable Securities” shall mean (1) any Common Shares now or hereafter
owned by the Investors, (2) any Common Shares issuable or issued upon conversion or exercise of any option, warrant, right or other security now or hereafter owned by the Investors, and (3) any Common Shares issued as (or issuable upon the
conversion or exercise of any option, warrant, right or other security which is issued as) a distribution with respect to, or in exchange for or in replacement of, or upon conversion of, such Common Shares, options, warrants, rights or other
securities; provided, however, that any Common Shares sold by a Person in a transaction in which such Person’s rights under this Agreement are not assigned pursuant to the terms of this Agreement shall cease to be Registrable Securities from
and after the time of such sale; and provided, further, that any Common Shares which may be resold by a Holder pursuant to Rule 144 promulgated by the Commission under the Securities Act shall cease to be Registrable Securities from and after the
time of the availability of Rule 144 for such resale provided such Holder owns less than one percent (1%) of the outstanding Common Shares. 

  
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 “Registration Statement” shall mean any registration statement of the Company
which covers any of the Registrable Securities, including the Prospectus, amendments and supplements to such Registration Statement, including post-effective amendments, all exhibits and all material incorporated by reference in such Registration
Statement. 
 “Securities Act” shall mean the Securities Act of 1933, as amended, or any similar federal statute, and the
rules and regulations of the Commission thereunder, all as the same shall be in effect from time to time. 
 “Violation”
shall mean any of the following statements, omissions or violations: (1) any untrue statement or alleged untrue statement of a material fact contained in a Registration Statement, including any documents filed under state securities or
“blue sky” laws in connection therewith, (2) the omission or alleged omission to state therein a material fact required to be stated therein, or necessary to make the statements therein not misleading, or (3) any violation or
alleged violation by the Company of the Securities Act, the Exchange Act, any state securities law or any rule or regulation promulgated thereunder. 

1.1    DEMAND REGISTRATION. Subject to the restrictions of this
Section 1.1, at any time after the earlier of thirty-six (36) months after the date of this Agreement or one hundred eighty (180) days following the effective date of a Qualified IPO, Investors
holding not less than twenty percent (20%) of the then outstanding Registrable Securities shall have the right, by written notice to the Company, to request that the Company register the Registrable Securities under the Securities Act. The Company
shall, within ten (10) days of the receipt of such notice, give written notice of such request to all Holders and shall, subject to the limitations of Section 1.1(b) below, use its best efforts to effect as soon as practicable the
registration under the Securities Act of all Registrable Securities which the Holders request to be registered within twenty (20) days of the mailing of such notice by the Company. Any registration of Registrable Securities pursuant to a
Registration Statement in accordance with this Section 1.1 is sometimes referred to herein as a “Demand Registration.” 

(a)    If the Holder(s) requesting the registration (“Initiating Holders”) intend to distribute the
Registrable Securities covered by their request by means of an underwriting, they shall so advise the Company as a part of their request made pursuant to Section 1.1 and the Company shall include such information in the written notice referred
to in Section 1.1(a). In such event, the right of any Holder to include such Holder’s Registrable Securities in such registration shall be conditioned upon such Holder’s participation in such underwriting and the inclusion of such
Holder’s Registrable Securities in the underwriting (unless otherwise mutually agreed by a majority in interest of the Initiating Holders and such Holder) to the extent provided herein. The managing underwriter or underwriters in such
underwriting shall be selected by the Initiating Holders, subject to the approval of the Company (such approval not to be unreasonably withheld) and prior written acceptance of such underwriter or underwriters by the Initiating Holders. All Holders
proposing to distribute their Registrable Securities through such underwriting shall enter into an underwriting agreement in customary form with the underwriter 

  
 3 

 
or underwriters so selected; provided, however, that no such Holder shall be required to make any representations or warranties except as they relate to such Holder’s ownership of
Registrable Securities and authority to enter into the underwriting agreement and to such Holder’s intended method of distribution, and the liability of such Holder shall be limited to an amount equal to net proceeds from the offering received
by such Holder. Notwithstanding any other provision of this Section 1.1, if the underwriter advises the Company or the Initiating Holders in writing that marketing factors require a limitation of the number of securities underwritten, then the
Company shall so advise all Holders of Registrable Securities which would otherwise be underwritten pursuant hereto, and the number of Registrable Securities that may be included in the underwriting shall be allocated among all Holders thereof,
including the Initiating Holders, in proportion (as nearly as practicable) to the amount of Registrable Securities being sold in the underwriting by each such Holder; provided, however, that no securities other than Registrable
Securities shall be covered by such registration. 
 (b)    Holders of Registrable Securities shall be entitled to an
aggregate of only two (2) Demand Registrations under this Agreement; provided, however, that the Company shall be obligated to effect as many registrations as may be requested by the Holders in the event and so long as a
registration pursuant to Form S-3 or any similar “short-form” registration statement is available, provided that (i) such request must cover Registrable Securities which, together with other
securities of the Company entitled to inclusion in such registration, are proposed to be sold at an aggregate price to the public of not less than two million dollars ($2,000,000), and (ii) the Company shall not be obligated to effect any such
registration until the next calendar year if the Company has effected two (2) registrations on Form S-3 (or its then equivalent) pursuant to this Section 1.1(b) in a calendar year. 

(c)    A registration will not count as a Demand Registration until the related Registration Statement has been declared
effective by the Commission. The Registration Statement relating to the Demand Registration shall remain effective for up to six (6) months. In any registration initiated as a Demand Registration, the Company will pay all Registration Expenses
(as defined in Section 1.6 hereof) in connection therewith, whether or not it becomes effective; provided that if the Holders of a majority of the Registrable Securities covered by a Registration Statement which has been filed (or which the
Company notifies such Holders it is prepared to file within five days) but not yet become effective shall cause or request the Company to withdraw (or cease the preparation of) any such Registration Statement, the Holders of a majority of the
Registrable Securities covered by such Registration Statement may thereafter request the Company to reinstate (or recommence preparation of) such Registration Statement, if permitted under the Securities Act, or to file another Demand Registration,
in accordance with the procedures set forth herein, only upon agreeing in writing to reimburse the Company for all Registration Expenses over and above those Registration Expenses which the Company would not have incurred had such initial Demand
Registration not been withdrawn. 
 (d)    The Company shall not be required to undergo or pay for any special audit to
effect any Registration Statement under this Section 1.1, and if such a special audit would be required in order to file or effect a registration hereunder, the Company shall be entitled to delay the filing or effectiveness of such Registration
Statement until a reasonable period of time following the completion of an audit in the ordinary course of the Company’s activities. 

  
 4 

 (e)    The Company shall be entitled to postpone for a reasonable period of
time, but not in excess of ninety (90) calendar days after receipt of the request from the Initiating Holders, filing of any Registration Statement otherwise required to be prepared and filed by it if the Company, at the time it receives a
request for registration, reasonably and in good faith believes that it would be materially disadvantageous to the Company for such filing to be made at the time requested; provided, however, that the Company will not utilize this
right more than once in any twelve (12) month period. 
 (f)    The Company shall not be obligated to file a
Registration Statement during (i) the period ending one hundred eighty (180) days after the effective date of the Company’s initial Registration Statement, or (ii) the ninety (90)-day
period following the effectiveness of any other Registration Statement filed by the Company in connection with an underwritten offering of its securities. 

1.2    PIGGYBACK REGISTRATION. If the Company proposes to register
(including for this purpose a registration effected by the Company for Persons other than the Holders) any of its equity securities under the Securities Act in connection with the public offering of such securities solely for cash (other than a
registration on Form S-8 relating solely to the sale of securities to participants in a Company stock plan or to other compensatory arrangements to the extent includable on Form
S-8, or a registration on Form S-4), the Company shall, at such time, promptly give each Holder written notice of such registration. Upon the written request of each
Holder given within twenty (20) days after mailing of such notice by the Company, the Company shall, subject to the provisions of this Section 1, use its best efforts to cause to be registered under the Securities Act all of the
Registrable Securities that each such Holder has requested to be registered. Notwithstanding any other provision of this Section 1.2, if the underwriter advises the Company in writing that, in the good faith judgment of the underwriter,
marketing factors require a limitation of the number of securities underwritten, then (i) the Company shall so advise all Holders of Registrable Securities which would otherwise be underwritten pursuant hereto, (ii) the number of shares
that may be included in the underwriting shall be allocated first to the Company and second to such Holders, and (iii) the aggregate number of Registrable Securities held by the Holders that may be included in the underwriting shall be
allocated (as nearly as practicable) among all requesting Holders thereof under this Agreement in proportion to the amount of Registrable Securities sought to be sold by each such Holder. The Company shall have no obligation under this
Section 1.2 to make any offering of its securities, or to complete an offering of its securities that it proposes to make, and shall incur no liability to any Holder for its failure to do so (except for the payment of Registration Expenses in
connection with any registration, whether or not completed). 
 1.3    OBLIGATIONS OF
THE COMPANY. Whenever required under this Agreement to effect the registration of any Registrable Securities, the Company shall, as expeditiously as reasonably possible: 

(a)    Prepare and file with the Commission a Registration Statement with respect to such Registrable Securities and use
its best efforts to cause such Registration Statement to become effective, and, upon the request of the Holders of a majority of the Registrable Securities being registered thereunder, keep such Registration Statement effective for up to six
(6) months or until the Holders have completed the distribution referred to in such 

  
 5 

 
Registration Statement, whichever occurs first (but in any event for at least any period required under the Securities Act); provided that before filing such Registration Statement or any
amendments thereto, the Company will furnish to the Holders copies of all such documents proposed to be filed. 

(b)    Prepare and file with the Commission such amendments and supplements to such Registration Statement and the
Prospectus used in connection with such Registration Statement as may be necessary to comply with the provisions of the Securities Act with respect to the disposition of all securities covered by such Registration Statement. 

(c)    Furnish to the Holders such number of copies of such Registration Statement and of each amendment and supplement
thereto (in each case including all exhibits), such number of copies of the Prospectus included in such Registration Statement (including each preliminary prospectus and any summary prospectus) and any other Prospectus filed under Rule 424 under the
Securities Act, in conformity with the requirements of the Securities Act, and such other documents as Holders may reasonably request in order to facilitate the disposition of Registrable Securities owned by them. 

(d)    Use diligent efforts to register and qualify the securities covered by such Registration Statement and under such
other securities or “blue sky” laws of such states or jurisdictions as shall be reasonably requested by the Holders; provided, however, that the Company shall not be required in connection therewith or as a condition thereto
to qualify to do business or to file a general consent to service of process in any such states or jurisdictions. 

(e)    Use diligent efforts to cause all Registrable Securities covered by such Registration Statement to be registered
with or approved by such other governmental agencies or authorities as may be necessary by virtue of the Company’s business or operations to enable the seller or sellers thereof to consummate the disposition of such Registrable Securities. 

(f)    In the event of any underwritten public offering, enter into and perform its obligations under an underwriting
agreement, in usual and customary form, with the managing underwriter of such offering. 
 (g)    Notify each Holder of
Registrable Securities covered by such Registration Statement at any time when a Prospectus relating thereto is required to be delivered under the Securities Act of the happening of any event as a result of which the Prospectus included in such
Registration Statement, as then in effect, includes an untrue statement of a material fact or omits to state a material fact required to be stated therein or necessary to make the statements therein not misleading in the light of the circumstances
then existing. 
 (h)    Notify each Holder of Registrable Securities covered by such Registration Statement and such
Holder’s underwriters, if any, and confirm such advice in writing: (1) when the Registration Statement has become effective, (2) when any post-effective amendment to the Registration Statement becomes effective, and (3) of any
request by the Commission for any amendment or supplement to the Registration Statement or Prospectus or for additional information. 

  
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 (i)    Notify each Holder of Registrable Securities if at any time the
Commission should institute or threaten to institute any proceedings for the purpose of issuing, or should issue, a stop order suspending the effectiveness of the Registration Statement. Upon the occurrence of any of the events mentioned in the
preceding sentence, the Company will use diligent efforts to prevent the issuance of any such stop order or to obtain the withdrawal thereof as soon as possible. The Company will advise each Holder of Registrable Securities promptly of any order or
communication of any public board or body addressed to the Company suspending or threatening to suspend the qualification of any Registrable Securities for sale in any jurisdiction. 

(j)    Furnish, at the request of any Holder requesting registration of Registrable Securities pursuant to this Agreement,
on the date that such Registrable Securities are delivered to the underwriters for sale in connection with a registration pursuant to this Agreement, if such securities are being sold through underwriters, or, if such securities are not being sold
through underwriters, on the date that the Registration Statement with respect to such securities becomes effective, an opinion, dated such date, of the counsel representing the Company for the purposes of such registration, in form and substance as
is customarily given to underwriters in an underwritten public offering, addressed to the underwriters, if any, and to the Holders requesting registration of Registrable Securities. 

(k)    As soon as practicable after the effective date of the Registration Statement, and in any event within sixteen
(16) months thereafter, have “made generally available to its security holders” (within the meaning of Rule 158 under the Securities Act) an earnings statement (which need not be audited) covering a period of at least twelve
(12) months beginning after the effective date of the Registration Statement and otherwise complying with Section 11(a) of the Securities Act. 

1.4    OBLIGATIONS AND OTHER AGREEMENTS OF
THE HOLDERS. 
 (a)    The Company may require each seller of
Registrable Securities as to which any registration is being effected to furnish to the Company such information regarding the distribution of such securities as the Company may from time to time reasonably request in writing. 

(b)    Each Holder of Registrable Securities agrees that, upon receipt of any notice from the Company of the happening of
any event of the kind described in Sections 1.3(b), 1.3(g), 1.3(h) or 1.3(i), such Holder will forthwith discontinue disposition of the Registrable Securities until such Holder’s receipt of copies of the supplemented or amended Prospectus or
until it is advised in writing by the Company that the use of the Prospectus may be resumed, and has received copies of any additional or supplemental filings which are incorporated by reference in the Prospectus, and, if so directed by the Company,
such Holder will deliver to the Company all copies, other than permanent file copies then in such Holder’s possession, of the Prospectus current at the time of receipt of such notice. 

1.5    FURNISH INFORMATION. It shall be a condition precedent to the
obligations of the Company to take any action pursuant to this Agreement with respect to the Registrable Securities of any selling Holder that such Holder shall furnish to the Company such information regarding itself, the Registrable Securities
held by it, and the intended method of disposition of such securities as shall be required to effect the registration of such Holder’s Registrable Securities. 

  
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 1.6    EXPENSES OF
REGISTRATION. (a) Subject to Section 1.1(c), all expenses incident to the Company’s performance of or compliance with the provisions of this Section 1, including, without limitation, all
registration and filing fees, fees and expenses of compliance with securities or “blue sky” laws, printing expenses and reasonable fees and disbursements of counsel for the Company and for the sellers of the Registrable Securities (subject
to the provisions of Section 1.6(b) hereof) and of all independent certified public accountants of the Company, securities acts liability insurance if the Company so desires and fees and expenses of other Persons retained by the Company (all
such expenses being herein called “Registration Expenses”) will be borne by the Company, regardless of whether the Registration Statement becomes effective. 

(b)    In connection with each registration pursuant to this Agreement, the Company will reimburse the Holders of
Registrable Securities being registered in such registration for the reasonable fees and disbursements of not more than one counsel chosen by the Holders of a majority of the Registrable Securities being registered. 

1.7    INDEMNIFICATION. 

(a)    INDEMNIFICATION BY THE COMPANY.
The Company agrees to indemnify and hold harmless each Holder, its heirs, personal representatives and assigns, and each of such Holder’s partners, stockholders, members, officers, directors, employees and affiliates, any underwriter (as
defined in the Securities Act) for such Holder and each Person, if any, who controls such Holder or underwriter within the meaning of the Securities Act or the Exchange Act against any losses, claims, damages or liabilities (joint or several) to
which they may become subject under the Securities Act, the Exchange Act or other federal or state law, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of, relate to or are based upon a Violation; and
the Company will pay to each such indemnified party, as incurred, any legal or other expenses reasonably incurred by them in connection with investigating or defending any such loss, claim, damage, liability or action; provided, however, that the
indemnity agreement contained in this Section 1.7(a) shall not apply to amounts paid in settlement of any such loss, claim, damage, liability or action if such settlement is effected without the consent of the Company (which consent shall not
be unreasonably withheld), nor shall the Company be liable in any such case to a particular indemnified party for any such loss, claim, damage, liability or action to the extent that it arises out of, relates to or is based upon a Violation which
occurs in reliance upon and in conformity with written information furnished expressly for use in connection with such registration by such indemnified party. 

(b)    INDEMNIFICATION BY HOLDERS. Each selling Holder,
severally and not jointly, will indemnify and hold harmless the Company, each of its partners’ directors, officers, employees and affiliates, each officer and manager of each subsidiary or Affiliate of the Company, each of its officers who has
signed the Registration Statement, each Person, if any, who controls the Company within the meaning of the Securities Act, any underwriter, any other holder of securities being sold pursuant to such Registration Statement and any controlling Person
of any such underwriter or other Holder, against any losses, claims, damages or liabilities 

  
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(joint or several) to which any of the foregoing Persons may become subject under the Securities Act, the Exchange Act or other federal or state law or regulation promulgated thereunder, insofar
as such losses, claims, damages or liabilities (or actions in respect thereto) 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 by such Holder expressly for use in connection with such registration; and each such Holder, severally and not jointly, will pay, as incurred, any legal or other expenses reasonably incurred by any Person entitled to be
indemnified pursuant to this Section 1.7(b), in connection with investigating or defending any such loss, claim, damage, liability, or action; provided, however, that the indemnity agreement contained in this Section 1.7(b) shall not apply
to amounts paid in settlement of any such loss, claim, damage, liability or action if such settlement is effected without the consent of the Holder (which consent shall not be unreasonably withheld); and provided further, that, in no event shall the
liability of any Holder under this Section 1.7(b) exceed the net proceeds from the offering received by such Holder. 

(c)    Promptly after receipt by an indemnified party under this Section 1.7 of notice of the commencement of any
action (including any governmental action), such indemnified party will, if a claim in respect thereof is to be made against any indemnifying party under this Section 1.7, 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 the defense thereof with counsel mutually
satisfactory to the parties, provided, however, that an indemnified party shall have the right to retain its own counsel, with the fees and expenses to be paid by the indemnifying party, if representation of such indemnified party by the counsel
retained by the indemnifying party would be inappropriate due to actual or potential differing interests between such indemnified party and any other party represented by such counsel in such proceeding. 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 party under this Section 1.7 except to the extent that the indemnifying party is
materially prejudiced thereby; and such failure to deliver written notice to the indemnifying party will not relieve it of any liability that it may have to any indemnified party otherwise than under this Section 1.7. 

(d)    The obligations of the Company and Holders under this Section 1.7 shall survive the completion of any offering
of Registrable Securities in a registration statement under this Agreement, and otherwise. 
 (e)    Any indemnity
agreements contained herein shall be in addition to any other rights to indemnification or contribution which any indemnified party may have pursuant to law or contract and shall remain operative and in full force and effect regardless of any
investigation made or omitted by or on behalf of any indemnified party. 
 (f)    Notwithstanding the foregoing, to the
extent that the provisions on indemnification and contribution contained in an underwriting agreement entered into in connection with the underwritten public offering are in conflict with the foregoing provisions, the provisions of the underwriting
agreement shall control. 

  
 9 

 (g)    If the indemnification provided for in this Section 1.7 is
required by its terms but is for any reason held to be unavailable or otherwise insufficient to hold harmless an indemnified party in respect of any loss, claim, damage or liability referred to herein, then the indemnifying party shall contribute to
the amount paid or payable by the indemnified party as a result of such losses, claims, damages, liabilities or expenses (1) in such proportion as is appropriate to reflect the relative benefits received by the indemnifying party on the one
hand and the indemnified party on the other or (2) if the allocation provided by clause (1) above is not permitted by applicable law or provides a lesser sum to the indemnified party than the amount hereafter calculated, in such proportion
as is appropriate to reflect not only the relative benefits received by the indemnifying party and the indemnified party, but also the relative fault of the indemnifying party and the indemnified party as well as any other relevant equitable
considerations. The relative fault shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information
supplied by the indemnifying party or the indemnified party and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such untrue statement or omission. No Person guilty of fraudulent
misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled to contribution from any Person who was not guilty of such fraudulent misrepresentation. Notwithstanding anything to the contrary in this
Section 1.7, no Holder shall be required, pursuant to this Section 1.7, to contribute any amount in excess of the net proceeds received by such Holder from the sale of Registrable Securities in the offering to which the losses, claims,
damages, liabilities or expenses of the indemnified party relate. 
 1.8    REPORTS
UNDER THE EXCHANGE ACT. With a view to making available to the Holders the benefits of Rule 144 under the Securities Act and any other rule or regulation of the
Commission that may at any time permit a Holder to sell securities of the Company to the public without registration or pursuant to a registration on Form S-3, the Company agrees to: 

(a)    Use diligent efforts to make and keep public information available, as those terms are understood and defined in
Rule 144 under the Securities Act, at all times; 
 (b)    Take such action as is necessary to enable the Holders to
utilize Form S-3 for the sale of their Registrable Securities; 
 (c)    Use
diligent efforts to file with the Commission in a timely manner all reports and other documents required of the Company under the Securities Act and the Exchange Act; and 

(d)    Furnish to any Holder, so long as the Holder owns any Registrable Securities, forthwith upon request (1) a
written statement by the Company that it has complied with the reporting requirements of Rule 144 under the Securities Act (at any time after ninety (90) days after the effective date of the initial registration statement filed by the Company)
or that it qualifies as a registrant whose securities may be resold pursuant to Form S-3 (at any time it so qualifies), (2) 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 (3) such other information as may be reasonably requested in availing any Holder of any rule or regulation of the Commission which permits the selling of any such securities without
registration or pursuant to such form. 

  
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 1.9    ASSIGNMENT OF
REGISTRATION RIGHTS. The rights to cause the Company to register Registrable Securities pursuant to this Agreement may be assigned in whole or in part by a Holder to one or more transferees or
assignees who acquire (i) not less than 10% of all Registrable Securities held by the Holder as of the date hereof and (ii) not less than 5% of the then outstanding Registrable Securities; provided that such transferee or assignee delivers
to the Company a written instrument by which such assignee agrees to be bound by the obligations imposed on Holders under this Agreement to the same extent as if such transferee or assignee was a party hereto. Any assignment of rights under this
Section 1.9 shall only be effective provided that (x) the Company is, within a reasonable time after such transfer, furnished with written notice of the same and address of such transferee or assignee; and (y) such transferee or
assignee agrees in writing to be bound by and subject to the conditions of this Agreement. Except as specifically set forth in this Section 1.9, neither this Agreement nor any Holder’s rights or privileges under this Agreement can be
assigned or transferred in whole or in part. 
 1.10    LIMITATIONS ON
SUBSEQUENT REGISTRATION RIGHTS; EXISTING REGISTRATION RIGHTS. From and after the date of this Agreement, the Company shall not, without the
prior written consent of the Holders of a majority of the outstanding Registrable Securities, enter into any agreement with any holder or prospective holder of any securities of the Company which would allow such holder or prospective holder
(1) to include such securities in any registration filed under this Agreement, unless under the terms of such agreement, such holder or prospective holder may include such securities in any such registration only to the extent that the
inclusion of such holder’s securities will not reduce the amount of the Registrable Securities of the Holders which is included or (2) to require a registration of shares of the Company’s common stock under the Securities Act. The
Company represents and warrants to the Holders that there are no registration rights relating to securities of the Company as of the date hereof, other than the registration rights which are granted to the Holders pursuant to this Agreement. 

1.11    “MARKET
STAND-OFF” AGREEMENT. Each Holder hereby agrees that, during the fourteen (14) day period prior to, and during the one hundred eighty
(180) day period following the effective date of an IPO, it shall not, to the extent requested by the Company and the underwriter, sell or otherwise transfer or dispose of (other than to donees, affiliates or partners who agree to be similarly
bound) any Registrable Securities except Registrable Securities included in such registration; provided, however, that all officers and directors of the Company and all other Persons (a) with registration rights (whether or not pursuant to this
Agreement), or (b) who own five percent (5%) or more of the outstanding Common Stock of the Company, enter into similar agreements. For the avoidance of doubt, this Section 1.11 shall not apply to any Common Shares purchased by a Holder in
the IPO or on the open securities markets or exchanges following such IPO. 
 1.12    CHANGES
IN REGISTRABLE SECURITIES. If, and as often as, there are any changes in the Registrable Securities by way of unit split, distribution, combination or reclassification, or through
merger, consolidation, reorganization or recapitalization, or by any other means, appropriate adjustment shall be made in the provisions of this Agreement, as may be required, so that the rights and privileges granted hereby shall continue with
respect to the Registrable Securities as so changed. Without limiting the generality of the foregoing, the Company will require any successor by merger or consolidation to assume and agree to be bound by the terms of this Section, as a condition to
any such merger or consolidation. 

  
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 1.13    TERMINATION OF
RIGHTS. All registration rights granted in this Agreement shall terminate and be of no further force and effect with respect to a Holder as of the date when all Registrable Securities held by and issuable to such
Holder may be sold under Rule 144 under the Securities Act during any ninety (90) day period, provided such Holder owns less than one percent (1%) of the outstanding Common Stock of the Company. 

2.    MISCELLANEOUS. 

2.1    ENTIRE AGREEMENT. This Agreement contains the entire agreement
among the parties hereto with respect to the subject matter hereof and supersedes all prior written agreements and negotiations and oral understandings, if any, with respect thereto. 

2.2    GOVERNING LAW. This Agreement shall be governed in all respects
by the laws of the State of Delaware as such laws are applied to agreements entered into and to be performed entirely within the State of Delaware, without regard to conflict of law provisions. 

2.3    SUCCESSORS AND ASSIGNS. Except as otherwise
expressly provided herein (including, without limitation, Section 1.9), the provisions hereof shall inure to the benefit of, and be binding upon, the successors, assigns, heirs, executors and administrators of the parties hereto (including any
successor entity of the Company upon a reincorporation). 
 2.4    NOTICES. Unless
otherwise provided, any notice required or permitted under this Agreement shall be given in writing and shall be deemed effectively given upon receipt by the party to be notified or three (3) days after deposit with the United States Post
Office, by registered or certified mail, postage prepaid or via facsimile or overnight courier and addressed to the party to be notified (1) if to a party other than the Company, at such party’s address set forth on Schedule A of this
Agreement or at such other address as such party shall have furnished the Company in writing, or, until any such party so furnishes an address to the Company, then to and at the address of the last holder of the Common Shares covered by this
Agreement who has so furnished an address to the Company, or (2) if to the Company, at 161 First Street, 3rd Floor, Cambridge, MA 02142, or at such other address as the Company shall have
furnished to the parties in writing. 
 2.5    SEVERABILITY. Any invalidity,
illegality or limitation on the enforceability of this Agreement or any part thereof, by any party whether arising by reason of the law of the respective party’s domicile or otherwise, shall in no way affect or impair the validity, legality or
enforceability of this Agreement with respect to other parties. If any provision of this Agreement shall be judicially determined to be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions shall
not in any way be affected or impaired thereby. 
 2.6    TITLES AND
SUBTITLES. The titles of the Sections of this Agreement are for convenience of reference only and are not to be considered in construing this Agreement. 

2.7    DELAYS OR OMISSIONS; REMEDIES
CUMULATIVE. It is agreed that no delay or omission to exercise any right, power or remedy accruing to the parties, upon any breach or default of the Company under this Agreement, shall impair any such right, power
or remedy, nor shall it be construed to be a waiver of any such breach or default, or any acquiescence therein, or of any similar breach or default thereafter occurring; nor shall any waiver of any single breach or

  
 12 

 
default be deemed a waiver of any other breach or default theretofore or thereafter occurring. It is further agreed that any waiver, permit, consent or approval of any kind or character by a
party of any breach or default under this Agreement, or any waiver by a party of any provisions or conditions of this Agreement must be in writing and shall be effective only to the extent specifically set forth in writing and that all remedies,
either under this Agreement or by law or otherwise afforded to a party, shall be cumulative and not alternative. 

2.8    AMENDMENT. This Agreement may not be amended or supplemented except by an
instrument or counterparts thereof signed in writing by (i) the Company and (ii) Holders of a majority of the voting power of Registrable Securities (calculated as if all Registrable Securities, if not already shares of common stock, had
been converted to shares of common stock); provided that no such amendment or supplement may materially impair the rights of, or impose any additional liability or obligation on, any Investor out of proportion to such effect on other Investors
without such Investor’s consent. 
 2.9    COUNTERPARTS. This Agreement may be
executed in any number of counterparts, each of which shall be an original, but all of which together shall constitute one and the same instrument. 

2.10    NOT SHELL COMPANY. The Company represents and
warrants that it is not a “shell company” within the meaning of Rule 12(b)-2 under the Exchange Act. 

  
 13 

 IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the date first above
written. 
  

			
	COMPANY:
	
	SOLID BIOSCIENCES, LLC
		
	By:	 	 /s/ Ilan Ganot

	Name:	 	Ilan Ganot
	Title:	 	Chief Executive Officer

 [INVESTOR SIGNATURE PAGES OMITTED]

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