Document:

Form of Indemnification Agreement

 Exhibit 10.1 
 SYNACOR, INC. 
 INDEMNIFICATION AGREEMENT 

This Indemnification Agreement (“Agreement”) is made as of
                    , 2007 by and between Synacor, Inc., a Delaware corporation (the “Company”), and
                     (“Indemnitee”). 
 RECITALS 
 WHEREAS, highly competent persons have become more reluctant to serve
publicly held corporations as directors 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 the corporation; 
 WHEREAS, the Amended and Restated Certificate of Incorporation of the Company
(the “Charter”) and the Amended and Restated Bylaws of the Company (the “Bylaws”) authorize indemnification of the officers, directors and employees of the Company. Indemnitee may also be entitled to indemnification
pursuant to the General Corporation Law of the State of Delaware (“DGCL”). The Charter, Bylaws and DGCL 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 of directors, officers and other persons with respect to indemnification; 
 WHEREAS, the Board of Directors of the Company (the “Board”) has determined that the increased difficulty in attracting and retaining such persons is detrimental to the best interests of
the Company’s stockholders and that the Company should act to assure such persons that there will be increased certainty of such protection in the future; 
 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; 
 WHEREAS, this Agreement is a supplement to and in furtherance of the indemnification provided in the Charter and Bylaws and any resolutions adopted pursuant thereto, and shall not be deemed a substitute
therefor, nor to diminish or abrogate any rights of Indemnitee thereunder; and 
 WHEREAS, Indemnitee is concerned that the
protection available under the Charter, Bylaws and DGCL and any insurance may not be adequate to protect Indemnitee, and in consideration of serving as a director, officer or employee (as applicable), desires to be assured of 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 Indemnitee be so indemnified. 

 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, officer or employee (as applicable) of the Company. 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. The foregoing notwithstanding, this Agreement shall continue in force after Indemnitee’s services to the Company have ceased. 
 Section 2. Definitions 
 As used in this Agreement: 

(a) “Corporate Status” describes the status of a person who is or was a director, officer, employee, trustee or agent of
the Company or of any other corporation, partnership or joint venture, trust, employee benefit plan or other enterprise which such person is or was serving at the request of the Company. 

(b) “Enterprise” shall mean the Company and any other corporation, partnership, joint venture, trust, employee benefit
plan or other enterprise of which Indemnitee is or was serving at the request of the Company as a director, officer, employee, trustee, agent or fiduciary. 
 (c) “Expenses” shall include all reasonable attorneys’ fees, retainers, court costs, transcript costs, fees of experts, witness fees, travel expenses, duplicating costs, printing and
binding costs, telephone charges, postage, delivery service fees, and all other disbursements or expenses of the types customarily incurred in connection with prosecuting, defending, preparing to prosecute or defend, investigating, being or
preparing to be a witness in, or otherwise participating in, a Proceeding. Expenses also shall include 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, supersedes bond, or other appeal bond or its equivalent. Expenses, however, shall not include amounts paid in settlement by Indemnitee or the amount of judgments or fines against Indemnitee. 

(d) “Independent Counsel” means a law firm, or a partner (or, if applicable, member) of such 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 the 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 

  
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the reasonable fees and expenses of the Independent Counsel referred to above and to fully indemnify such counsel against any and all Expenses, claims, liabilities and damages arising out of or
relating to this Agreement or its engagement pursuant hereto. 
 (e) The term “Proceeding” shall include any
threatened, pending or completed action, suit, arbitration, 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 or investigative nature, in which Indemnitee was, is or will be involved as a party or otherwise by reason of Indemnitee’s Corporate Status, by reason of any action taken by him or
of any action on his part while acting in such capacity, or by reason of the fact that he is or was serving at the request of the Company as a director, officer, employee, trustee or agent of another corporation, partnership, joint venture, trust,
employee benefit plan or other enterprise, 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; provided, however, that, other than a Proceeding initiated by Indemnitee to enforce his or her rights under this Agreement, the term “Proceeding” shall include a Proceeding (or part thereof) initiated by Indemnitee only if such
Proceeding (or part thereof) was authorized by the Board of Directors. 
 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 against all Expenses, judgments, fines and amounts paid in settlement actually and reasonably incurred by Indemnitee or on his behalf
in connection with such Proceeding or any claim, issue or matter therein, if Indemnitee acted in good faith and in a manner he 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 conduct was unlawful. Indemnitee shall not enter into any settlement in connection with a Proceeding without 10 days prior notice to the Company. 

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 Company to procure a judgment in its favor. Pursuant to this Section 4, Indemnitee
shall be indemnified against all Expenses actually and reasonably incurred by him or on his behalf in connection with such Proceeding or any claim, issue or matter therein, if Indemnitee acted in good faith and in a manner he reasonably believed to
be in or not opposed to the best interests of the Company. 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 (the “Delaware Court”) 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 for such expenses as the Delaware Court or such other court shall deem proper. 

  
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 Section 5. Indemnification for Expenses of a Party Who is Wholly or Partly
Successful. Notwithstanding any other provisions of this Agreement, 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 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 (a) all Expenses actually and reasonably incurred by him or on his behalf in connection with each
successfully resolved claim, issue or matter and (b) any claim, issue or matter related to any such successfully resolved claim, issue or matter. For purposes of this Section 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 extent that Indemnitee is, by reason of his Corporate Status, a witness in
any Proceeding to which Indemnitee is not a party, he shall be indemnified against all Expenses actually and reasonably incurred by him or on his behalf in connection therewith. 

Section 7. Additional Indemnification. 
 (a) Notwithstanding any limitation in Sections 3, 4, or 5 hereof, the Company shall indemnify Indemnitee to the fullest extent permitted by law if Indemnitee is a party to, or threatened to be made a
party to, 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 actually and reasonably incurred by Indemnitee in connection
with the Proceeding. 
 (b) For purposes of Section 7(a), the meaning of the phrase “to the fullest extent permitted
by 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, employees or agents. 
 Section 8. Exclusions. Notwithstanding any provision in this
Agreement to the contrary, the Company shall not be obligated under this Agreement to make any indemnity with respect to 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 with respect to any excess beyond the amount paid under any
insurance policy or other indemnity provision. 

  
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 (b) for 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, as amended, or similar provisions of state statutory law or common law; or 

(c) for which payment is prohibited by applicable law. 
 Section 9. Advances of Expenses. The Company shall advance, to the extent not prohibited by law, the Expenses incurred by Indemnitee in connection with any Proceeding, and such advancement
shall be made within 10 days after the receipt by the Company of a statement or statements requesting such advances (which shall include invoices received by Indemnitee in connection 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 included with the invoice) from time to time, 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. 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. The Indemnitee shall qualify for advances upon the execution and delivery to the Company of this Agreement which shall constitute an undertaking providing that the Indemnitee undertakes to the fullest extent required by
law to repay the advance if and to the extent that it is ultimately determined by final judicial decision from which there is no further right to appeal that Indemnitee is not entitled to be indemnified by the Company. This Section 9 shall not
apply to any claim made by Indemnitee for which indemnity is excluded pursuant to Section 8. The right to advances under this paragraph shall in all events continue until final disposition of any Proceeding, including any appeal therefrom.

 Section 10. Procedure for Notification and Defense of Claim. 

(a) To obtain indemnification under this Agreement, Indemnitee shall submit to the Company a written request therefor. 

(b) The Company will be entitled to participate in the Proceeding at its own expense. 

Section 11. Procedure Upon Application for Indemnification. 

(a) Upon written request by Indemnitee for indemnification pursuant to Section 10(a), a determination, if required by applicable
law, with respect to Indemnitee’s entitlement thereto shall be made in the specific case by Independent Counsel chosen in accordance Section 11(b) below in a written opinion to the Board, a copy of which shall be delivered to Indemnitee,
and, if it is so determined that Indemnitee is entitled to indemnification, payment to Indemnitee shall be made as soon as practicable after such determination. Indemnitee shall cooperate with the Independent Counsel making such determination with
respect to Indemnitee’s entitlement to indemnification, including providing to such counsel upon 

  
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reasonable advance request any documentation or information which is not privileged or otherwise protected from disclosure and which is reasonably available to Indemnitee and reasonably necessary
to such determination. Any costs or expenses (including attorneys’ fees and disbursements) incurred by Indemnitee in so cooperating with the Independent Counsel 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. 
 (b) The Independent Counsel shall be selected by Indemnitee. The Company may, within 10 days after written notice of such selection, deliver to the Indemnitee 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 a 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 10(a) hereof, and the final disposition of the Proceeding, no Independent Counsel shall have been selected and not objected to, the Indemnitee may petition a court of competent
jurisdiction for resolution of any objection which shall have been made by the Company to the selection of Independent Counsel and/or for the appointment as Independent Counsel of a person selected by the court or by such other person as the 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 11(a) hereof. Upon the due commencement of any judicial proceeding or arbitration
pursuant to Section 13(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). 

Section 12. Presumptions and Effect of Certain Proceedings. 

(a) In making a determination with respect to entitlement to indemnification hereunder, the Independent Counsel making such determination
shall presume that Indemnitee is entitled to indemnification under this Agreement if Indemnitee has submitted a request for indemnification in accordance with Section 10(a) of this Agreement, and the Company shall have the burden of proof to
overcome that presumption in connection with the making by the Independent Counsel of any determination contrary to that presumption. Neither the failure of the Company or of 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 or by 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) The termination of any Proceeding or of any claim, issue or matter therein, by judgment, order, settlement or conviction, or upon a plea of guilty or nolo contendere or its equivalent,
shall not (except as otherwise expressly provided in this Agreement) of itself 

  
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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 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 conduct was unlawful. 
 (c) 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 officers of the Enterprise in the course of their duties, or on the advice of legal counsel for the Enterprise or the Board or counsel selected by any committee of the
Board or on information or records given or reports made to the Enterprise by an independent certified public accountant or by an appraiser, investment banker or other expert selected with reasonable care by the Company or the Board or any committee
of the Board. The provisions of this Section 12(c) shall not be deemed to be exclusive or to limit in any way the other circumstances in which the Indemnitee may be deemed to have met the applicable standard of conduct set forth in this
Agreement. 
 (d) The knowledge and/or actions, or failure to act, of any director, officer, agent or employee of the Enterprise
shall not be imputed to Indemnitee for purposes of determining the right to indemnification under this Agreement. 

Section 13. Remedies of Indemnitee. 
 (a) Subject to Section 13(e), in the event that (i) a determination is made pursuant to Section 11 of this Agreement that Indemnitee is not entitled to indemnification under this Agreement,
(ii) advancement of Expenses is not timely made pursuant to Section 9 of this Agreement, (iii) no determination of entitlement to indemnification shall have been made pursuant to Section 11(a) of this Agreement within 30 days
after receipt by the Company of the request for indemnification, (iv) payment of indemnification is not made pursuant to Section 5 or 6 or the last sentence of Section 11(a) of this Agreement within 10 days after receipt by the
Company of a written request therefor, or (v) payment of indemnification pursuant to Section 3, 4 or 7 of this Agreement is not made within 10 days after a determination has been made that Indemnitee is entitled to indemnification,
Indemnitee shall be entitled to an adjudication by a court of his entitlement to such indemnification or advancement of Expenses. Alternatively, Indemnitee, at his 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 first has the
right to commence such proceeding pursuant to this Section 13(a); provided, however, that the foregoing clause shall not apply in respect of a proceeding brought by Indemnitee to enforce his 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 11(a) of this Agreement that Indemnitee is not entitled to indemnification, any judicial proceeding or arbitration commenced pursuant to this Section 13 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

  
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pursuant to this Section 13 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 11(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 13, 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 be precluded from asserting in any judicial proceeding or arbitration commenced pursuant to this Section 13
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. The Company shall
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 Indemnitee in connection with any action brought by Indemnitee for indemnification or advance of Expenses from the Company under this Agreement or under any directors’ and officers’ liability insurance policies maintained by
the Company, regardless of whether Indemnitee ultimately is determined to be entitled to such indemnification, advancement of Expenses or insurance recovery, as the case may be, in the suit for which indemnification or advances is being sought.

 (e) Notwithstanding anything in this Agreement to the contrary, no determination as to entitlement to indemnification under
this Agreement shall be required to be made prior to the final disposition of the Proceeding, including any appeal therein. 

Section 14. Non-exclusivity; Survival of Rights; Insurance; Subrogation. 

(a) The rights of indemnification and to receive advancement of Expenses as provided by this Agreement shall not be deemed exclusive of
any other rights to which Indemnitee may at any time be entitled under applicable law, the Charter, the Company’s Bylaws, any agreement, a vote of stockholders or a resolution of directors, or otherwise. 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 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 Charter, Bylaws 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. 

  
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 (b) To the extent that the Company maintains an insurance policy or policies providing
liability insurance for directors, officers, employees, or agents of the Company or of any other 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 the commencement of such proceeding 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 the 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, 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) 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’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, employee or agent of any other corporation, 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, partnership, joint venture, trust, employee benefit plan or other enterprise.

 Section 15. 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, officer or employee (as applicable) of the Company or (b) 1 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 commenced by Indemnitee pursuant to Section 13 of this Agreement relating thereto. This Agreement shall be binding upon the Company and
its successors and assigns and shall inure to the benefit of Indemnitee and his spouse, heirs, executors, administrators, and personal or legal representatives. The Company shall require and cause any successor (whether direct or indirect by
purchase, merger, consolidation or otherwise) to all, substantially all or a substantial part of the business and/or assets of the Company, by written agreement in form and substance satisfactory to the Indemnitee, expressly to 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 16. Severability. If any provision or provisions of this Agreement shall be held to be invalid, illegal or unenforceable for any reason whatsoever: (a) the validity, legality

  
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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 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 17. 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, officer or
employee (as applicable) of the Company, and the Company acknowledges that Indemnitee is relying upon this Agreement in serving as a director, officer or employee (as applicable) 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 Charter of
the Company, the Bylaws of the Company and applicable law, and shall not be deemed a substitute therefor, nor to diminish or abrogate any rights of Indemnitee thereunder. 
 Section 18. Modification and Waiver. No supplement, modification or amendment of this Agreement shall be binding unless executed in writing by the parties thereto. 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 19. 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 the Indemnitee under this Agreement or otherwise. 
 Section 20. 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, (c) mailed by reputable overnight courier and receipted for by the party to whom said notice or other
communication shall have been directed or (d) sent by facsimile transmission, with receipt of oral confirmation that such transmission has been received: 

  
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 (a) If to Indemnitee, at such address as Indemnitee shall provide to the Company.

 (b) If to the Company to: 
 Synacor, Inc. 
 40 La Riviere Drive, Suite 300 

Buffalo, NY 14202 
 Attention: Chief Financial Officer 
 or to any other address as may have been furnished to
Indemnitee by the Company. 
 Section 21. 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 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 22. 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 13(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 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) appoint, to the extent such party is not
otherwise subject to service of process in the State of Delaware, Incorporating Services, Ltd., Dover, Delaware as its agent in the State of Delaware as such party’s agent for acceptance of legal process in connection with any such action or
proceeding against such party with the same legal force and validity as if served upon such party personally within the State of Delaware, (iv) waive any objection to the laying of venue of any such action or proceeding in the Delaware Court,
and (v) 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 23. 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. 

  
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 Section 24. Miscellaneous. The headings of the paragraphs 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. 

  
 – 12
– 

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

			
	SYNACOR, INC.
		
	By:	 	  

		 	Name:
		 	Title:
	
	INDEMNITEE:
		
	By:	 	  

	Name:	 	

  
 – 13
–2000 Stock Plan

 Exhibit 10.2.1 
 Synacor, Inc. 
 2000 STOCK PLAN 

1. Purposes of the Plan. The purposes of this 2000 Stock Plan are to attract and retain the best available personnel for
positions of substantial responsibility, to provide additional incentive to Employees and Consultants and to promote the success of the Company’s business. Options granted under the Plan may be Incentive Stock Options or Nonstatutory Stock
Options, as determined by the Administrator at the time of grant of an option and subject to the applicable provisions of Section 422 of the Code and the regulations promulgated thereunder. Stock Purchase Rights may also be granted under the
Plan. 
 2. Definitions. As used herein, the following definitions shall apply: 

(a) “Administrator” means the Board or its Committee appointed pursuant to Section 4 of the Plan. 

(b) “Affiliate” means an entity other than a Subsidiary (as defined below) which, together with the Company, is
under common control of a third person or entity. 
 (c) “Applicable Laws” means the legal requirements
relating to the administration of stock option and restricted stock purchase plans under applicable U.S. New York corporate laws, U.S. federal and applicable state securities laws, the Code, any Stock Exchange rules or regulations and the applicable
laws of any other country or jurisdiction where Options or Stock Purchase Rights are granted under the Plan, as such laws, rules, regulations and requirements shall be in place from time to time. 

(d) “Board” means the Board of Directors of the Company. 

(e) “Cause” for termination of a Participant’s Continuous Service Status will exist if the Participant is
terminated for any of the following reasons: (i) Participant’s willful failure substantially to perform his or her duties and responsibilities to the Company or deliberate violation of a Company policy; (ii) Participant’s
commission of any act of fraud, embezzlement, dishonesty or any other willful misconduct that has caused or is reasonably expected to result in material injury to the Company; (iii) unauthorized use or disclosure by Participant of any
proprietary information or trade secrets of the Company or any other party to whom the Participant owes an obligation of nondisclosure as a result of his or her relationship with the Company; or (iv) Participant’s willful breach of any of
his or her obligations under any written agreement or covenant with the Company. The determination as to whether a Participant is being terminated for Cause shall be made in good faith by the Company and shall be final and binding on the
Participant. The foregoing definition does not in any way limit the Company’s ability to terminate a Participant’s employment or consulting relationship at any time as provided in Section 5(d) below, and the term “Company”
will be interpreted to include any Subsidiary, Parent, Affiliate or successor thereto, if appropriate. 

 (f) “Change of Control” means a sale of all or substantially all of
the Company’s assets, or any merger or consolidation of the Company with or into another corporation other than a merger or consolidation in which the holders of more than 50% of the shares of capital stock of the Company outstanding
immediately prior to such transaction continue to hold (either by the voting securities remaining outstanding or by their being converted into voting securities of the surviving entity) more than 50% of the total voting power represented by the
voting securities of the Company, or such surviving entity, outstanding immediately after such transaction. 
 (g)
“Code” means the Internal Revenue Code of 1986, as amended. 
 (h) “Committee”
means one or more committees or subcommittees of the Board appointed by the Board to administer the Plan in accordance with Section 4 below. 
 (i) “Common Stock” means the Common Stock of the Company. 

(j) “Company” means Synacor, Inc. a New York corporation. 

(k) “Consultant” means any person, including an advisor, who is engaged by the Company or any Parent, Subsidiary
or Affiliate to render services and is compensated for such services, and any director of the Company whether compensated for such services or not. 
 (l) “Continuous Service Status” means the absence of any interruption or termination of service as an Employee or Consultant. Continuous Service Status as an Employee or Consultant
shall not be considered interrupted in the case of: (i) sick leave; (ii) military leave; (iii) any other leave of absence approved by the Administrator, provided that such leave is for a period of not more than ninety (90) days,
unless reemployment upon the expiration of such leave is guaranteed by contract or statute, or unless provided otherwise pursuant to Company policy adopted from time to time; or (iv) in the case of transfers between locations of the Company or
between the Company, its Parents, Subsidiaries, Affiliates or their respective successors. A change in status from an Employee to a Consultant or from a Consultant to an Employee will not constitute an interruption of Continuous Service Status.

 (m) “Corporate Transaction” means a sale of all or substantially all of the Company’s assets, or
a merger, consolidation or other capital reorganization of the Company with or into another corporation and includes a Change of Control. 
 (n) “Director” means a member of the Board. 
 (o)
“Employee” means any person employed by the Company or any Parent, Subsidiary or Affiliate, with the status of employment determined based upon such factors as are deemed appropriate by the Administrator in its discretion,
subject to any requirements of the Code or the Applicable Laws. The payment by the Company of a director’s fee to a Director shall not be sufficient to constitute “employment” of such Director by the Company. 

(p) “Exchange Act” means the Securities Exchange Act of 1934, as amended. 

  
 2 

 (q) “Fair Market Value” means, as of any date, the fair market value
of the Common Stock, as determined by the Administrator in good faith on such basis as it deems appropriate and applied consistently with respect to Participants. Whenever possible, the determination of Fair Market Value shall be based upon the
closing price for the Shares as reported in the Wall Street Journal for the applicable date. 
 (r) “Incentive
Stock Option” means an Option intended to qualify as an incentive stock option within the meaning of Section 422 of the Code, as designated in the applicable Option Agreement. 

(s) “Involuntary Termination” means termination of a Participant’s Continuous Service Status under the
following circumstances: (i) termination without Cause by the Company or a Subsidiary, Parent, Affiliate or successor thereto, as appropriate; or (ii) voluntary termination by the Participant within 30 days following (A) a material
reduction in the Participant’s job responsibilities, provided that neither a mere change in title alone nor reassignment following a Change of Control to a position that is substantially similar to the position held prior to the Change of
Control shall constitute a material reduction in job responsibilities; (B) relocation by the Company or a Subsidiary, Parent, Affiliate or successor thereto, as appropriate, of the Participant’s work site to a facility or location more
than 50 miles from the Participant’s principal work site for the Company at the time of the Change of Control; or (C) a reduction in Participant’s then-current base salary by at least 10%, provided that an across-the-board reduction
in the salary level of all other employees or consultants in positions similar to the Participant’s by the same percentage amount as part of a general salary level reduction shall not constitute such a salary reduction. 

(t) “Listed Security” means any security of the Company that is listed or approved for listing on a national
securities exchange or designated or approved for designation as a national market system security on an interdealer quotation system by the National Association of Securities Dealers, Inc. 

(u) “Named Executive” means any individual who, on the last day of the Company’s fiscal year, is the chief
executive officer of the Company (or is acting in such capacity) or among the four most highly compensated officers of the Company (other than the chief executive officer). Such officer status shall be determined pursuant to the executive
compensation disclosure rules under the Exchange Act. 
 (v) “Nonstatutory Stock Option” means an Option
not intended to qualify as an Incentive Stock Option, as designated in the applicable Option Agreement. 
 (w)
“Option” means a stock option granted pursuant to the Plan. 
 (x) “Option
Agreement” means a written document, the form(s) of which shall be approved from time to time by the Administrator, reflecting the terms of an Option granted under the Plan and includes any documents attached to or incorporated into
such Option Agreement, including, but not limited to, a notice of stock option grant and a form of exercise notice. 

  
 3 

 (y) “Option Exchange Program” means a program approved by the
Administrator whereby outstanding Options are exchanged for Options with a lower exercise price or are amended to decrease the exercise price as a result of a decline in the Fair Market Value of the Common Stock. 

(z) “Optioned Stock” means the Common Stock subject to an Option. 

(aa) “Optionee” means an Employee or Consultant who receives an Option. 

(bb) “Parent” means a “parent corporation,” whether now or hereafter existing, as defined in
Section 424(e) of the Code, or any successor provision. 
 (cc) “Participant” means any holder of
one or more Options or Stock Purchase Rights, or the Shares issuable or issued upon exercise of such awards, under the Plan. 

(dd) “Plan” means this 2000 Stock Plan. 
 (ee) “Reporting Person” means an officer, Director, or greater than ten percent stockholder of the Company within the meaning of Rule 16a-2 under the Exchange Act, who is required
to file reports pursuant to Rule 16a-3 under the Exchange Act. 
 (ff) “Restricted Stock” means Shares of
Common Stock acquired pursuant to a grant of a Stock Purchase Right under Section 11 below. 
 (gg) “Restricted
Stock Purchase Agreement” means a written document, the form(s) of which shall be approved from time to time by the Administrator, reflecting the terms of a Stock Purchase Right granted under the Plan and includes any documents attached
to such agreement. 
 (hh) “Rule 16b-3” means Rule 16b-3 promulgated under the Exchange Act, as amended
from time to time, or any successor provision. 
 (ii) “Share” means a share of the Common Stock, as
adjusted in accordance with Section 14 of the Plan. 
 (jj) “Stock Exchange” means any stock
exchange or consolidated stock price reporting system on which prices for the Common Stock are quoted at any given time. 
 (kk)
“Stock Purchase Right” means the right to purchase Common Stock pursuant to Section 11 below. 

(ll) “Subsidiary” means a “subsidiary corporation,” whether now or hereafter existing, as defined in
Section 424(f) of the Code, or any successor provision. 
 (mm) “Ten Percent Holder” means a person
who owns stock representing more than ten percent (10%) of the voting power of all classes of stock of the Company or any Parent or Subsidiary. 

  
 4 

 3. Stock Subject to the Plan. Subject to the provisions of Section 14 of
the Plan, the maximum aggregate number of Shares that may be sold under the Plan is 5,515,757 Shares of Common Stock. The Shares may be authorized, but unissued, or reacquired Common Stock. If an award should expire or become unexercisable for any
reason without having been exercised in full, or is surrendered pursuant to an Option Exchange Program, the unpurchased Shares that were subject thereto shall, unless the Plan shall have been terminated, become available for future grant under the
Plan. In addition, any Shares of Common Stock which are retained by the Company upon exercise of an award in order to satisfy the exercise or purchase price for such award or any withholding taxes due with respect to such exercise or purchase shall
be treated as not issued and shall continue to be available under the Plan. Shares issued under the Plan and later repurchased by the Company pursuant to any repurchase right which the Company may have shall not be available for future grant under
the Plan. 
 4. Administration of the Plan. 

(a) General. The Plan shall be administered by the Board or a Committee, or a combination thereof, as determined by the
Board. The Plan may be administered by different administrative bodies with respect to different classes of Participants and, if permitted by the Applicable Laws, the Board may authorize one or more officers to make awards under the Plan.

 (b) Committee Composition. If a Committee has been appointed pursuant to this Section 4, such Committee
shall continue to serve in its designated capacity until otherwise directed by the Board. From time to time the Board may increase the size of any Committee and appoint additional members thereof, remove members (with or without cause) and appoint
new members in substitution therefor, fill vacancies (however caused) and remove all members of a Committee and thereafter directly administer the Plan, all to the extent permitted by the Applicable Laws and, in the case of a Committee administering
the Plan in accordance with the requirements of Rule 16b-3 or Section 162(m) of the Code, to the extent permitted or required by such provisions. 
 (c) Powers of the Administrator. Subject to the provisions of the Plan and in the case of a Committee, the specific duties delegated by the Board to such Committee, the Administrator shall
have the authority, in its discretion: 
 (i) to determine the Fair Market Value of the Common Stock, in accordance with
Section 2[(q)] of the Plan, provided that such determination shall be applied consistently with respect to Participants under the Plan; 
 (ii) to select the Employees and Consultants to whom Options and Stock Purchase Rights may from time to time be granted; 
 (iii) to determine whether and to what extent Options and Stock Purchase Rights are granted; 
 (iv) to determine the number of Shares of Common Stock to be covered by each award granted; 

  
 5 

 (v) to approve the form(s) of agreement(s) used under the Plan; 

(vi) to determine the terms and conditions, not inconsistent with the terms of the Plan, of any award granted hereunder, which terms and
conditions include but are not limited to the exercise or purchase price, the time or times when awards may be exercised (which may be based on performance criteria), any vesting acceleration or waiver of forfeiture restrictions, and any restriction
or limitation regarding any Option, Optioned Stock, Stock Purchase Right or Restricted Stock, based in each case on such factors as the Administrator, in its sole discretion, shall determine; 

(vii) to determine whether and under what circumstances an Option may be settled in cash under Section 10(c) instead of Common
Stock; 
 (viii) to reduce the exercise price of any Option to the then current Fair Market Value if the Fair Market Value of
the Common Stock covered by such Option has declined since the date the Option was granted. 
 (ix) to implement an Option
Exchange Program on such terms and conditions as the Administrator in its discretion deems appropriate, provided that no amendment or adjustment to an Option that would materially and adversely affect the rights of any Optionee shall be made without
the prior written consent of the Optionee; 
 (x) to adjust the vesting of an Option held by an Employee or Consultant as a
result of a change in the terms or conditions under which such person is providing services to the Company; 
 (xi) to construe
and interpret the terms of the Plan and awards granted under the Plan, which constructions, interpretations and decisions shall be final and binding on all Participants; and 
 (xii) in order to fulfill the purposes of the Plan and without amending the Plan, to modify grants of Options or Stock Purchase Rights to Participants who are foreign nationals or employed outside of the
United States in order to recognize differences in local law, tax policies or customs. 
 5. Eligibility.

 (a) Recipients of Grants. Nonstatutory Stock Options and Stock Purchase Rights may be granted to Employees and
Consultants. Incentive Stock Options may be granted only to Employees, provided that Employees of Affiliates shall not be eligible to receive Incentive Stock Options. 
 (b) Type of Option. Each Option shall be designated in the Option Agreement as either an Incentive Stock Option or a Nonstatutory Stock Option. 

(c) ISO $100,000 Limitation. Notwithstanding any designation under Section 5(b), to the extent that the aggregate Fair
Market Value of Shares with respect to which 

  
 6 

 
Options designated as Incentive Stock Options are exercisable for the first time by any Optionee during any calendar year (under all plans of the Company or any Parent or Subsidiary) exceeds
$100,000, such excess Options shall be treated as Nonstatutory Stock Options. For purposes of this Section 5(c), Incentive Stock Options shall be taken into account in the order in which they were granted, and the Fair Market Value of the
Shares subject to an Incentive Stock Option shall be determined as of the date of the grant of such Option. 
 (d) No
Employment Rights. The Plan shall not confer upon any Participant any right with respect to continuation of an employment or consulting relationship with the Company, nor shall it interfere in any way with such Participant’s right or
the Company’s right to terminate his or her employment or consulting relationship at any time, with or without Cause. 
 6.
Term of Plan. The Plan shall become effective upon its adoption by the Board of Directors. It shall continue in effect for a term of ten (10) years unless sooner terminated under Section 16 of the Plan. 

7. Term of Option. The term of each Option shall be the term stated in the Option Agreement; provided that the term shall
be no more than ten years from the date of grant thereof or such shorter term as may be provided in the Option Agreement and provided further that, in the case of an Incentive Stock Option granted to a person who at the time of such grant is a
Ten Percent Holder, the term of the Option shall be five years from the date of grant thereof or such shorter term as may be provided in the Option Agreement. 
 8. Limitation on Grants to Employees. Subject to adjustment as provided in Section 14 below, the maximum number of Shares that may be subject to Options and Stock Purchase Rights
granted to any one Employee under this Plan for any fiscal year of the Company shall be 700,000 shares, provided that this Section 8 shall apply only after such time, if any, as the Common Stock becomes a Listed Security. 

9. Option Exercise Price and Consideration. 
 (a) Exercise Price. The per Share exercise price for the Shares to be issued pursuant to exercise of an Option shall be such price as is determined by the Administrator and set forth in the
Option Agreement, but shall be subject to the following: 
 (i) In the case of an Incentive Stock Option 

(A) granted to an Employee who at the time of grant is a Ten Percent Holder, the per Share exercise price shall be no less than 110% of
the Fair Market Value per Share on the date of grant; or 
 (B) granted to any other Employee, the per Share exercise price
shall be no less than 100% of the Fair Market Value per Share on the date of grant. 
 (ii) In the case of a Nonstatutory Stock
Option 

  
 7 

 (A) granted prior to the date, if any, on which the Common Stock becomes a Listed Security
to a person who is at the time of grant is a Ten Percent Holder, the per Share exercise price shall be no less than 110% of the Fair Market Value per Share on the date of grant if required by the Applicable Laws and, if not so required, shall be
such price as is determined by the Administrator; 
 (B) granted prior to the date, if any, on which the Common Stock becomes a
Listed Security to any other eligible person, the per Share exercise price shall be no less than 85% of the Fair Market Value per Share on the date of grant if required by the Applicable Laws and, if not so required, shall be such price as is
determined by the Administrator; or 
 (C) granted on or after the date, if any, on which the Common Stock becomes a Listed
Security to any eligible person, the per share Exercise Price shall be such price as determined by the Administrator provided that if such eligible person is, at the time of the grant of such Option, a Named Executive of the Company, the per share
Exercise Price shall be no less than 100% of the Fair Market Value on the date of grant if such Option is intended to qualify as performance-based compensation under Section 162(m) of the Code. 

(iii) Notwithstanding the foregoing, Options may be granted with a per Share exercise price other than as required above pursuant to a
merger or other corporate transaction. 
 (b) Permissible Consideration. The consideration to be paid for the
Shares to be issued upon exercise of an Option, including the method of payment, shall be determined by the Administrator (and, in the case of an Incentive Stock Option, shall be determined at the time of grant) and may consist entirely of
(1) cash; (2) check; (3) delivery of Optionee’s promissory note with such recourse, interest, security and redemption provisions as the Administrator determines to be appropriate (subject to the provisions of Section 505(e)
and (f) of the New York Business Corporation Law); (4) cancellation of indebtedness; (5) other Shares that have a Fair Market Value on the date of surrender equal to the aggregate exercise price of the Shares as to which the Option is
exercised, provided that in the case of Shares acquired, directly or indirectly, from the Company, such Shares must have been owned by the Optionee for more than six months on the date of surrender (or such other period as may be required to avoid
the Company’s incurring an adverse accounting charge); (6) delivery of a properly executed exercise notice together with such other documentation as the Administrator and a securities broker approved by the Company shall require to effect
exercise of the Option and prompt delivery to the Company of the sale or loan proceeds required to pay the exercise price and any applicable withholding taxes; or (7) any combination of the foregoing methods of payment. In making its
determination as to the type of consideration to accept, the Administrator shall consider if acceptance of such consideration may be reasonably expected to benefit the Company and the Administrator may, in its sole discretion, refuse to accept a
particular form of consideration at the time of any Option exercise. 
 10. Exercise of Option. 

  
 8 

 (a) General. 

(i) Exercisability. Any Option granted hereunder shall be exercisable at such times and under such conditions as determined
by the Administrator, consistent with the term of the Plan and reflected in the Option Agreement, including vesting requirements and/or performance criteria with respect to the Company and/or the Optionee; provided however that, if required by the
Applicable Laws, any Option granted prior to the date, if any, upon which the Common Stock becomes a Listed Security shall become exercisable at the rate of at least 20% per year over five years from the date the Option is granted. In the
event that any of the Shares issued upon exercise of an Option (which exercise occurs prior to the date, if any, upon which the Common Stock becomes a Listed Security) should be subject to a right of repurchase in the Company’s favor, such
repurchase right shall, if required by the Applicable Laws, lapse at the rate of at least 20% per year over five years from the date the Option is granted. Notwithstanding the above, in the case of an Option granted to an officer, Director or
Consultant of the Company or any Parent, Subsidiary or Affiliate of the Company, the Option may become fully exercisable, or a repurchase right, if any, in favor of the Company shall lapse, at any time or during any period established by the
Administrator. The Administrator shall have the discretion to determine whether and to what extent the vesting of Options shall be tolled during any unpaid leave of absence; provided, however, that in the absence of such determination, vesting of
Options shall be tolled during any such leave. 
 (ii) Minimum Exercise Requirements. An Option may not be
exercised for a fraction of a Share. The Administrator may require that an Option be exercised as to a minimum number of Shares, provided that such requirement shall not prevent an Optionee from exercising the full number of Shares as to which the
Option is then exercisable. 
 (iii) Procedures for and Results of Exercise. An Option shall be deemed exercised
when written notice of such exercise has been given to the Company in accordance with the terms of the Option by the person entitled to exercise the Option and the Company has received full payment for the Shares with respect to which the Option is
exercised. Full payment may, as authorized by the Administrator, consist of any consideration and method of payment allowable under Section 9(b) of the Plan, provided that the Administrator may, in its sole discretion, refuse to accept any form
of consideration at the time of any Option exercise. 
 Exercise of an Option in any manner shall result in a decrease in the
number of Shares that thereafter may be available, both for purposes of the Plan and for sale under the Option, by the number of Shares as to which the Option is exercised. 
 (iv) Rights as Stockholder. Until the issuance of the Shares (as evidenced by the appropriate entry on the books of the Company or of a duly authorized transfer agent of the Company), no
right to vote or receive dividends or any other rights as a stockholder shall exist with respect to the Optioned Stock, notwithstanding the exercise of the Option. No adjustment will be made for a dividend or other right for which the record date is
prior to the date the stock certificate is issued, except as provided in Section 14 of the Plan. 

  
 9 

 (b) Termination of Employment or Consulting Relationship. Except as otherwise
set forth in this Section 10(b), the Administrator shall establish and set forth in the applicable Option Agreement the terms and conditions upon which an Option shall remain exercisable, if at all, following termination of an Optionee’s
Continuous Service Status, which provisions may be waived or modified by the Administrator at any time. To the extent that the Optionee is not entitled to exercise an Option at the date of his or her termination of Continuous Service Status, or if
the Optionee (or other person entitled to exercise the Option) does not exercise the Option to the extent so entitled within the time specified in the Option Agreement or below (as applicable), the Option shall terminate and the Optioned Stock
underlying the unexercised portion of the Option shall revert to the Plan. In no event may any Option be exercised after the expiration of the Option term as set forth in the Option Agreement (and subject to Section 7). 

The following provisions (1) shall apply to the extent an Option Agreement does not specify the terms and conditions upon which an
Option shall terminate upon termination of an Optionee’s Continuous Service Status, and (2) establish the minimum post-termination exercise periods that may be set forth in an Option Agreement: 

(i) Termination other than Upon Disability or Death. In the event of termination of an Optionee’s Continuous Service
Status, such Optionee may exercise an Option for 30 days following such termination to the extent the Optionee was entitled to exercise it at the date of such termination. No termination shall be deemed to occur and this Section 10(b)(i) shall
not apply if (i) the Optionee is a Consultant who becomes an Employee, or (ii) the Optionee is an Employee who becomes a Consultant. 
 (ii) Disability of Optionee. In the event of termination of an Optionee’s Continuous Service Status as a result of his or her disability (including a disability within the meaning of
Section 22(e)(3) of the Code), such Optionee may exercise an Option at any time within twelve months following such termination to the extent the Optionee was entitled to exercise it at the date of such termination. 

(iii) Death of Optionee. In the event of the death of an Optionee during the period of Continuous Service Status since the
date of grant of the Option, or within thirty days following termination of Optionee’s Continuous Service Status, the Option may be exercised by Optionee’s estate or by a person who acquired the right to exercise the Option by bequest or
inheritance at any time within six months following the date of death, but only to the extent of the right to exercise that had accrued at the date of death or, if earlier, the date the Optionee’s Continuous Service Status terminated.

 (c) Buyout Provisions. The Administrator may at any time offer to buy out for a payment in cash or Shares an
Option previously granted under the Plan based on such terms and conditions as the Administrator shall establish and communicate to the Optionee at the time that such offer is made. 

  
 10 

 11. Stock Purchase Rights. 

(a) Rights to Purchase. When the Administrator determines that it will offer Stock Purchase Rights under the Plan, it shall
advise the offeree in writing of the terms, conditions and restrictions related to the offer, including the number of Shares that such person shall be entitled to purchase, the price to be paid, and the time within which such person must accept such
offer. In the case of a Stock Purchase Right granted prior to the date, if any, on which the Common Stock becomes a Listed Security and if required by the Applicable Laws at that time, the purchase price of Shares subject to such Stock Purchase
Rights shall not be less than 85% of the Fair Market Value of the Shares as of the date of the offer, or, in the case of a Ten Percent Holder, the price shall not be less than 100% of the Fair Market Value of the Shares as of the date of the offer.
If the Applicable Laws do not impose the requirements set forth in the preceding sentence and with respect to any Stock Purchase Rights granted after the date, if any, on which the Common Stock becomes a Listed Security, the purchase price of Shares
subject to Stock Purchase Rights shall be as determined by the Administrator. The offer to purchase Shares subject to Stock Purchase Rights shall be accepted by execution of a Restricted Stock Purchase Agreement in the form determined by the
Administrator. 
 (b) Repurchase Option. 
 (i) General. Unless the Administrator determines otherwise, the Restricted Stock Purchase Agreement shall grant the Company a repurchase option exercisable upon the voluntary or involuntary
termination of the purchaser’s employment with the Company for any reason (including death or disability). The purchase price for Shares repurchased pursuant to the Restricted Stock Purchase Agreement shall be the original purchase price paid
by the purchaser and may be paid by cancellation of any indebtedness of the purchaser to the Company. The repurchase option shall lapse at such rate as the Administrator may determine, provided that with respect to a Stock Purchase Right granted
prior to the date, if any, on which the Common Stock becomes a Listed Security to a purchaser who is not an officer, Director or Consultant of the Company or of any Parent or Subsidiary of the Company, it shall lapse at a minimum rate of
20% per year if required by the Applicable Laws. 
 (ii) Termination. In the event of termination of a
Participant’s Continuous Service Status, the Company shall have the right to repurchase from the Participant vested Shares issued upon exercise of a Stock Purchase Right granted to any person prior to the date, if any, upon which the Common
stock becomes a Listed Security upon the following terms: (A) the repurchase must be made within 90 days of termination of the Participant’s Continuous Service Status at the Fair Market Value of the Shares as of the date of termination,
(B) consideration for the repurchase consists of cash or cancellation of purchase money indebtedness, and (C) the repurchase right terminates upon the effective date of the Company’s initial public offering of its Common Stock.
Nothing in this Section 11(b)(ii) shall in any way limit the Company’s right to purchase unvested Shares as set forth in the applicable Restricted Stock Purchase Agreement. 

(c) Other Provisions. The Restricted Stock Purchase Agreement shall contain such other terms, provisions and conditions not
inconsistent with the Plan as may be 

  
 11 

 
determined by the Administrator in its sole discretion. In addition, the provisions of Restricted Stock Purchase Agreements need not be the same with respect to each purchaser. 

(d) Rights as a Stockholder. Once the Stock Purchase Right is exercised, the purchaser shall have the rights equivalent to
those of a stockholder, and shall be a stockholder when his or her purchase is entered upon the records of the duly authorized transfer agent of the Company. No adjustment will be made for a dividend or other right for which the record date is prior
to the date the Stock Purchase Right is exercised, except as provided in Section 14 of the Plan. 
 12.
Taxes. 
 (a) As a condition of the exercise of an Option or Stock Purchase Right granted under the Plan, the
Participant (or in the case of the Participant’s death, the person exercising the Option or Stock Purchase Right) shall make such arrangements as the Administrator may require for the satisfaction of any applicable federal, state, local or
foreign withholding tax obligations that may arise in connection with the exercise of the Option or Stock Purchase Right and the issuance of Shares. The Company shall not be required to issue any Shares under the Plan until such obligations are
satisfied. If the Administrator allows the withholding or surrender of Shares to satisfy a Participant’s tax withholding obligations under this Section 12 (whether pursuant to Section 12(c), (d) or (e), or otherwise), the
Administrator shall not allow Shares to be withheld in an amount that exceeds the minimum statutory withholding rates for federal and state tax purposes, including payroll taxes. 

(b) In the case of an Employee and in the absence of any other arrangement, the Employee shall be deemed to have directed the Company to
withhold or collect from his or her compensation an amount sufficient to satisfy such tax obligations from the next payroll payment otherwise payable after the date of an exercise of the Option or Stock Purchase Right. 

(c) This Section 12(c) shall apply only after the date, if any, upon which the Common Stock becomes a Listed Security. In the case of
Participant other than an Employee (or in the case of an Employee where the next payroll payment is not sufficient to satisfy such tax obligations, with respect to any remaining tax obligations), in the absence of any other arrangement and to the
extent permitted under the Applicable Laws, the Participant shall be deemed to have elected to have the Company withhold from the Shares to be issued upon exercise of the Option or Stock Purchase Right that number of Shares having a Fair Market
Value determined as of the applicable Tax Date (as defined below) equal to the amount required to be withheld. For purposes of this Section 12, the Fair Market Value of the Shares to be withheld shall be determined on the date that the amount
of tax to be withheld is to be determined under the Applicable Laws (the “Tax Date”). 
 (d) If permitted by the
Administrator, in its discretion, a Participant may satisfy his or her tax withholding obligations upon exercise of an Option or Stock Purchase Right by surrendering to the Company Shares that have a Fair Market Value determined as of the applicable
Tax Date equal to the amount required to be withheld. In the case of shares previously acquired from the Company that are surrendered under this Section 12(d), such Shares must have 

  
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been owned by the Participant for more than six (6) months on the date of surrender (or such other period of time as is required for the Company to avoid adverse accounting charges).

 (e) Any election or deemed election by a Participant to have Shares withheld to satisfy tax withholding obligations under
Section 12(c) or (d) above shall be irrevocable as to the particular Shares as to which the election is made and shall be subject to the consent or disapproval of the Administrator. Any election by a Participant under Section 12(d)
above must be made on or prior to the applicable Tax Date. 
 (f) In the event an election to have Shares withheld is made by a
Participant and the Tax Date is deferred under Section 83 of the Code because no election is filed under Section 83(b) of the Code, the Participant shall receive the full number of Shares with respect to which the Option or Stock Purchase
Right is exercised but such Participant shall be unconditionally obligated to tender back to the Company the proper number of Shares on the Tax Date. 
 13. Non-Transferability of Options and Stock Purchase Rights. 
 (a)
General. Except as set forth in this Section 13, Options and Stock Purchase Rights may not be sold, pledged, assigned, hypothecated, transferred or disposed of in any manner other than by will or by the laws of descent or
distribution. The designation of a beneficiary by an Optionee will not constitute a transfer. An Option or Stock Purchase Right may be exercised, during the lifetime of the holder of an Option or Stock Purchase Right, only by such holder or a
transferee permitted by this Section 13. 
 (b) Limited Transferability Rights. Notwithstanding anything else
in this Section 13, prior to the date, if any, on which the Common Stock becomes a Listed Security, the Administrator may in its discretion grant Nonstatutory Stock Options that may be transferred by instrument to an inter vivos or testamentary
trust in which the Options are to be passed to beneficiaries upon the death of the trustor (settlor) or by gift to “Immediate Family” (as defined below), on such terms and conditions as the Administrator deems appropriate. Following the
date, if any, on which the Common Stock becomes a Listed Security, the Administrator may in its discretion grant transferable Nonstatutory Stock Options pursuant to Option Agreements specifying the manner in which such Nonstatutory Stock Options are
transferable. “Immediate Family” means any child, stepchild, grandchild, parent, stepparent, grandparent, spouse, sibling, mother-in-law, father-in-law, son-in-law, daughter-in-law, brother-in-law, or sister-in-law, and shall
include adoptive relationships. 
 14. Adjustments Upon Changes in Capitalization, Merger or Certain Other
Transactions. 
 (a) Changes in Capitalization. Subject to any required action by the stockholders of the
Company, the number of Shares of Common Stock covered by each outstanding Option or Stock Purchase Right, the numbers of Shares set forth in Sections 3(a) and 8 above, and the number of Shares of Common Stock that have been authorized for issuance
under the Plan but as to which no Options or Stock Purchase Rights have yet been granted or that 

  
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have been returned to the Plan upon cancellation or expiration of an Option or Stock Purchase Right, as well as the price per Share of Common Stock covered by each such outstanding Option or
Stock Purchase Right, shall be proportionately adjusted for any increase or decrease in the number of issued Shares of Common Stock resulting from a stock split, reverse stock split, stock dividend, combination, recapitalization or reclassification
of the Common Stock, or any other increase or decrease in the number of issued Shares of Common Stock effected without receipt of consideration by the Company; provided, however, that conversion of any convertible securities of the Company shall not
be deemed to have been “effected without receipt of consideration.” Such adjustment shall be made by the Administrator, whose determination in that respect shall be final, binding and conclusive. Except as expressly provided herein, no
issuance by the Company of shares of stock of any class, or securities convertible into shares of stock of any class, shall affect, and no adjustment by reason thereof shall be made with respect to, the number or price of Shares of Common Stock
subject to an Option or Stock Purchase Right. 
 (b) Dissolution or Liquidation. In the event of the dissolution or
liquidation of the Company, each Option and Stock Purchase Right will terminate immediately prior to the consummation of such action, unless otherwise determined by the Administrator. 

(c) Corporate Transaction. In the event of a Corporate Transaction, each outstanding Option or Stock Purchase Right shall be
assumed or an equivalent option or right shall be substituted by such successor corporation or a parent or subsidiary of such successor corporation (the “Successor Corporation”), unless the Successor Corporation does not agree to
assume the award or to substitute an equivalent option or right, in which case such Option or Stock Purchase Right shall terminate upon the consummation of the transaction. 
 Notwithstanding the above, in the event (i) of a Change of Control following the date, if any, on which the Common Stock becomes a Listed Security, and (ii) a Participant holding an Option or
Stock Purchase Right assumed or substituted by the Successor Corporation in the Change of Control, or holding Restricted Stock issued upon exercise of an Option or Stock Purchase Right with respect to which the Successor Corporation has succeeded to
a repurchase right as a result of the Change of Control, is Involuntarily Terminated by the Successor Corporation without Cause in connection with, or within 24 months following consummation of, the transaction, then any assumed or substituted
Option or Stock Purchase Right held by the terminated Participant at the time of termination shall accelerate and become exercisable as to the number of Shares that would otherwise have vested and been exercisable as of the date 24 months following
from the date of termination, and any repurchase right applicable to any Shares shall lapse as to the number of Shares as to which the repurchase right would otherwise have lapsed as of the date 24 months following from the date of termination, in
each case assuming the Participant remained in Continuous Service Status for such 24 month period. The acceleration of vesting and lapse of repurchase rights provided for in the previous sentence shall occur immediately prior to the effective date
of the Participant’s termination. 
 For purposes of this Section 14(c), an Option or a Stock Purchase Right shall be
considered assumed, without limitation, if, at the time of issuance of the stock or other consideration upon a Corporate Transaction or a Change of Control, as the case may be, each holder of an Option or Stock Purchase Right would be entitled to
receive upon exercise of the 

  
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award the same number and kind of shares of stock or the same amount of property, cash or securities as such holder would have been entitled to receive upon the occurrence of the transaction if
the holder had been, immediately prior to such transaction, the holder of the number of Shares of Common Stock covered by the award at such time (after giving effect to any adjustments in the number of Shares covered by the Option or Stock Purchase
Right as provided for in this Section 14); provided that if such consideration received in the transaction is not solely common stock of the Successor Corporation, the Administrator may, with the consent of the Successor Corporation, provide
for the consideration to be received upon exercise of the award to be solely common stock of the Successor Corporation equal to the Fair Market Value of the per Share consideration received by holders of Common Stock in the transaction. 

(d) Limitation on Payments. In the event that the vesting acceleration or lapse of a repurchase right provided for in
Section 14(c) above (x) constitutes “parachute payments” within the meaning of Section 280G of the Code, and (y) but for this Section 14(d) would be subject to the excise tax imposed by Section 4999 of the
Code (or any corresponding provisions of state income tax law), then such vesting acceleration or lapse of a repurchase right shall be either 
 (A) delivered in full, or 
 (B) delivered as to such lesser extent which would
result in no portion of such severance benefits being subject to excise tax under Code Section 4999, whichever amount, taking into account the applicable federal, state and local income taxes and the excise tax imposed by Code
Section 4999, results in the receipt by the Participant on an after-tax basis of the greater amount of acceleration or lapse of repurchase rights benefits, notwithstanding that all or some portion of such benefits may be taxable under Code
Section 4999. Any determination required under this Section 14(d) shall be made in writing by the Company’s independent accountants, whose determination shall be conclusive and binding for all purposes on the Company and any affected
Participant. In the event that (A) above applies, then the Participant shall be responsible for any excise taxes imposed with respect to such benefits. In the event that (B) above applies, then each benefit provided hereunder shall be
proportionately reduced to the extent necessary to avoid imposition of such excise taxes. 
 (e) Certain
Distributions. In the event of any distribution to the Company’s stockholders of securities of any other entity or other assets (other than dividends payable in cash or stock of the Company) without receipt of consideration by the
Company, the Administrator may, in its discretion, appropriately adjust the price per Share of Common Stock covered by each outstanding Option or Stock Purchase Right to reflect the effect of such distribution. 

15. Time of Granting Options and Stock Purchase Rights. The date of grant of an Option or Stock Purchase Right shall, for
all purposes, be the date on which the Administrator makes the determination granting such Option or Stock Purchase Right, or such other date as is determined by the Administrator, provided that in the case of any Incentive Stock Option, the grant
date shall be the later of the date on which the Administrator makes the determination granting such Incentive Stock Option or the date of commencement of the Optionee’s employment relationship with the Company. Notice of the determination
shall be given to each 

  
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Employee or Consultant to whom an Option or Stock Purchase Right is so granted within a reasonable time after the date of such grant. 

16. Amendment and Termination of the Plan. 
 (a) Authority to Amend or Terminate. The Board may at any time amend, alter, suspend or discontinue the Plan, but no amendment, alteration, suspension or discontinuation (other than an
adjustment pursuant to Section 14 above) shall be made that would materially and adversely affect the rights of any Optionee or holder of Stock Purchase Rights under any outstanding grant, without his or her consent. In addition, to the extent
necessary and desirable to comply with the Applicable Laws, the Company shall obtain stockholder approval of any Plan amendment in such a manner and to such a degree as required. 

(b) Effect of Amendment or Termination. No amendment or termination of the Plan shall materially and adversely affect
Options or Stock Purchase Rights already granted, unless mutually agreed otherwise between the Optionee or holder of the Stock Purchase Rights and the Administrator, which agreement must be in writing and signed by the Optionee or holder and the
Company. 
 17. Conditions Upon Issuance of Shares. Notwithstanding any other provision of the Plan or any
agreement entered into by the Company pursuant to the Plan, the Company shall not be obligated, and shall have no liability for failure, to issue or deliver any Shares under the Plan unless such issuance or delivery would comply with the Applicable
Laws, with such compliance determined by the Company in consultation with its legal counsel. As a condition to the exercise of an Option or Stock Purchase Right, the Company may require the person exercising the award to represent and warrant at the
time of any such exercise that the Shares are being purchased only for investment and without any present intention to sell or distribute such Shares if, in the opinion of counsel for the Company, such a representation is required by law.

 18. Reservation of Shares. The Company, during the term of this Plan, will at all times reserve and keep
available such number of Shares as shall be sufficient to satisfy the requirements of the Plan. 
 19. Agreements.
Options and Stock Purchase Rights shall be evidenced by Option Agreements and Restricted Stock Purchase Agreements, respectively, in such form(s) as the Administrator shall from time to time approve. 

20. Stockholder Approval. If required by the Applicable Laws, continuance of the Plan shall be subject to approval by the
stockholders of the Company within twelve (12) months before or after the date the Plan is adopted. Such stockholder approval shall be obtained in the manner and to the degree required under the Applicable Laws. 

21. Information and Documents to Optionees and Purchasers. Prior to the date, if any, upon which the Common Stock becomes a
Listed Security and if required by the Applicable Laws, the Company shall provide financial statements at least annually to each Optionee and to each individual who acquired Shares pursuant to the Plan, during the period such Optionee or

  
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purchaser has one or more Options or Stock Purchase Rights outstanding, and in the case of an individual who acquired Shares pursuant to the Plan, during the period such individual owns such
Shares. The Company shall not be required to provide such information if the issuance of Options or Stock Purchase Rights under the Plan is limited to key employees whose duties in connection with the Company assure their access to equivalent
information. 
 JALgn 
 BFLO. DOC
1043818.3 

  
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