Form of Director Stock Option Agreement



 Exhibit 10.3.15 

SYNACOR, INC. 2006 STOCK PLAN 

NOTICE OF STOCK OPTION GRANT (EARLY
EXERCISE) 
 The Optionee has been granted the following option to purchase shares of the Common Stock of Synacor, Inc.:

  

			
	Name of Optionee:	  	[Name]
		
	Total Number of Shares:	  	[TotalShares]
		
	Type of Option:	  	Nonstatutory Stock Option (NSO)
		
	Exercise Price per Share:	  	$[PricePerShare]
		
	Date of Grant:	  	[DateofGrant]
		
	Date Exercisable:	  	This option may be exercised at any time after the Date of Grant for all or any part of the Shares subject to this option.
		
	Vesting Commencement Date:	  	[VestComDate]
		
	Vesting Schedule:	  	The Right of Repurchase shall lapse with respect to the first 25% of the Shares subject to this option when the Optionee completes 12 months of continuous Service after the
Vesting Commencement Date set forth above. The Right of Repurchase shall lapse with respect to an additional 1/48th of the Shares subject to this option when the Optionee completes each month of continuous Service thereafter.
		
	Expiration Date:	  	[ExpDate]. This option expires earlier if the Optionee’s Service terminates earlier, as provided in Section 6 of the Stock Option Agreement.

 By signing below, the Optionee and the Company agree that this option is granted under, and governed by the terms and
conditions of, the 2006 Stock Plan and the Stock Option Agreement. Both of these documents are attached to, and made a part of, this Notice of Stock Option Grant. Section 14 of the Stock Option Agreement includes important acknowledgements
of the Optionee. 
  

							
	OPTIONEE:	 		 	SYNACOR, INC.
				
	  
	 		 	By	 	  

	[Name]	 		 		 	Ron Frankel
		 		 		 	President and Chief Executive Officer








 THE OPTION GRANTED PURSUANT TO THIS AGREEMENT AND THE SHARES ISSUABLE UPON THE EXERCISE THEREOF HAVE NOT
BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL, THAT
SUCH REGISTRATION IS NOT REQUIRED. 
 SYNACOR, INC. 2006 STOCK
PLAN: 
 STOCK OPTION AGREEMENT 

SECTION 1. GRANT OF OPTION. 
 (a) Option. On the terms and conditions set forth in the Notice of Stock Option Grant and this Agreement, the Company grants to the Optionee on the Date of Grant the option to purchase at the
Exercise Price the number of Shares set forth in the Notice of Stock Option Grant. The Exercise Price is agreed to be at least 100% of the Fair Market Value per Share on the Date of Grant (110% of Fair Market Value if this option is designated as an
ISO in the Notice of Stock Option Grant and Section 3(b) of the Plan applies). This option is intended to be an ISO or an NSO, as provided in the Notice of Stock Option Grant. 

(b) $100,000 Limitation. Even if this option is designated as an ISO in the Notice of Stock Option Grant, it shall be deemed to be
an NSO to the extent (and only to the extent) required by the $100,000 annual limitation under Section 422(d) of the Code. 

(c) Stock Plan and Defined Terms. This option is granted pursuant to the Plan, a copy of which the Optionee acknowledges having
received. The provisions of the Plan are incorporated into this Agreement by this reference. Capitalized terms are defined in Section 15 of this Agreement. 
 SECTION 2. RIGHT TO EXERCISE. 
 (a) Exercisability. Subject to
Subsection (b) below and the other conditions set forth in this Agreement, all or part of this option may be exercised prior to its expiration at the time or times set forth in the Notice of Stock Option Grant. Shares purchased by exercising
this option may be subject to the Right of Repurchase under Section 7. 
 (b) Stockholder Approval. Any other
provision of this Agreement notwithstanding, no portion of this option shall be exercisable at any time prior to the approval of the Plan by the Company’s stockholders. 







 SECTION 3. NO TRANSFER OR ASSIGNMENT OF OPTION. 

Except as otherwise provided in this Agreement, this option and the rights and privileges conferred hereby shall not be sold, pledged or
otherwise transferred (whether by operation of law or otherwise) and shall not be subject to sale under execution, attachment, levy or similar process. 
 SECTION 4. EXERCISE PROCEDURES. 
 (a) Notice of Exercise and Voting
Agreement. The Optionee or the Optionee’s representative may exercise this option by (i) giving written notice to the Company pursuant to Section 13(c) and (ii) executing a Voting Agreement. The notice shall specify the
election to exercise this option, the number of Shares for which it is being exercised and the form of payment. The person exercising this option shall sign the notice. In the event that this option is being exercised by the representative of the
Optionee, the notice shall be accompanied by proof (satisfactory to the Company) of the representative’s right to exercise this option. The Optionee or the Optionee’s representative shall deliver to the Company, at the time of giving the
notice of exercise and the executed Voting Agreement, payment in a form permissible under Section 5 for the full amount of the Purchase Price. In the event of a partial exercise of this option, Shares shall be deemed to have been purchased in
the order in which they vest in accordance with the Notice of Stock Option Grant. 
 (b) Issuance of Shares. After
receiving a proper notice of exercise and executed Voting Agreement, the Company shall cause to be issued one or more certificates evidencing the Shares for which this option has been exercised. Such Shares shall be registered (i) in the name
of the person exercising this option, (ii) in the names of such person and his or her spouse as community property or as joint tenants with the right of survivorship or (iii) with the Company’s consent, in the name of a revocable
trust. In the case of Restricted Shares, the Company shall cause such certificates to be deposited in escrow under Section 7(c). In the case of other Shares, the Company shall cause such certificates to be delivered to or upon the order of the
person exercising this option. 
 (c) Withholding Taxes. In the event that the Company determines that it is required to
withhold any tax as a result of the exercise of this option, the Optionee, as a condition to the exercise of this option, shall make arrangements satisfactory to the Company to enable it to satisfy all withholding requirements. The Optionee shall
also make arrangements satisfactory to the Company to enable it to satisfy any withholding requirements that may arise in connection with the vesting or disposition of Shares purchased by exercising this option. 

SECTION 5. PAYMENT FOR STOCK. 
 (a) Cash. All or part of the Purchase Price may be paid in cash or cash equivalents. 
 (b) Surrender of Stock. At the discretion of the Board of Directors, all or any part of the Purchase Price may be paid by surrendering, or attesting to the ownership of, Shares that are already
owned by the Optionee. Such Shares shall be surrendered to the Company in good form for transfer and shall be valued at their Fair Market Value as of the date when this option is exercised. 

  
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 (c) Exercise/Sale. All or part of the Purchase Price and any withholding taxes may be
paid by the delivery (on a form prescribed by the Company) of an irrevocable direction to a securities broker approved by the Company to sell Shares and to deliver all or part of the sales proceeds to the Company. However, payment pursuant to this
Subsection (c) shall be permitted only if (i) Stock then is publicly traded and (ii) such payment does not violate applicable law. 
 SECTION 6. TERM AND EXPIRATION. 
 (a) Basic Term. This option shall
in any event expire on the expiration date set forth in the Notice of Stock Option Grant, which date is 10 years after the Date of Grant (five years after the Date of Grant if this option is designated as an ISO in the Notice of Stock Option Grant
and Section 3(b) of the Plan applies). 
 (b) Termination of Service (Except by Death). If the Optionee’s
Continuous Service Status terminates for any reason other than death, then this option shall expire on the earliest of the following occasions: 
 (i) The expiration date determined pursuant to Subsection (a) above; 
 (ii) The date thirty (30) days after the termination of the Optionee’s Continuous Service Status for any reason other than Disability; or 

(iii) The date six (6) months after the termination of the Optionee’s Continuous Service Status by reason of
Disability. 
 The Optionee may exercise all or part of this option at any time before its expiration under the preceding sentence, but only to
the extent that this option had become exercisable for vested Shares before the Optionee’s Continuous Service Status terminated. When the Optionee’s Continuous Service Status terminates, this option shall expire immediately with respect to
the number of Shares for which this option is not yet exercisable and with respect to any Restricted Shares. In the event that the Optionee dies after termination of Continuous Service Status but before the expiration of this option, all or part of
this option may be exercised (prior to expiration) by the executors or administrators of the Optionee’s estate or by any person who has acquired this option directly from the Optionee by beneficiary designation, bequest or inheritance, but only
to the extent that this option had become exercisable for vested Shares before the Optionee’s Continuous Service Status terminated. 
 (c) Death of the Optionee. If the Optionee dies while in Continuous Service Status or within thirty (30) days after Optionee’s Continuous Service Status has terminated, then this option
shall expire on the earlier of the following dates: 
 (i) The expiration date determined pursuant to
Subsection (a) above; or 

  
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 (ii) The date six (6) months after the Optionee’s death.

 All or part of this option may be exercised at any time before its expiration under the preceding sentence by the executors or administrators
of the Optionee’s estate or by any person who has acquired this option directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that this option had become exercisable for vested Shares before the
Optionee’s Continuous Service Status terminates. When the Optionee’s Continuous Service Status terminates, this option shall expire immediately with respect to the number of Shares for which this option is not yet exercisable and with
respect to any Restricted Shares. 
 (d) Part-Time Employment and Leaves of Absence. If the Optionee commences working on
a part-time basis, then the Company may adjust the vesting schedule set forth in the Notice of Stock Option Grant in accordance with the Company’s part-time work policy or the terms of an agreement between the Optionee and the Company
pertaining to his or her part-time schedule. If the Optionee goes on a leave of absence, then the Company may adjust the vesting schedule set forth in the Notice of Stock Option Grant in accordance with the Company’s leave of absence policy or
the terms of such leave. Except as provided in the preceding sentence, Service shall be deemed to continue for any purpose under this Agreement while the Optionee is on a bona fide leave of absence, if (i) such leave was approved by the
Company in writing and (ii) continued crediting of Service for such purpose is expressly required by the terms of such leave or by applicable law (as determined by the Company). Service shall be deemed to terminate when such leave ends, unless
the Optionee immediately returns to active work. 
 (e) Notice Concerning ISO Treatment. Even if this option is
designated as an ISO in the Notice of Stock Option Grant, it ceases to qualify for favorable tax treatment as an ISO to the extent that it is exercised: 
 (i) More than three months after the date when the Optionee ceases to be an Employee for any reason other than death or Disability; 

(ii) More than 12 months after the date when the Optionee ceases to be an Employee by reason of Disability; or 

(iii) More than three months after the date when the Optionee has been on a leave of absence for 90 days, unless the
Optionee’s reemployment rights following such leave were guaranteed by statute or by contract. 
 SECTION 7. RIGHT OF REPURCHASE.

 (a) Scope of Repurchase Right. Until they vest in accordance with the Notice of Stock Option Grant and
Subsection (b) below, the Shares acquired under this Agreement shall be Restricted Shares and shall be subject to the Company’s Right of Repurchase. The Company, however, may decline to exercise its Right of Repurchase or may exercise its
Right of Repurchase only with respect to a portion of the Restricted Shares. The Company may exercise its Right of Repurchase only during the Repurchase Period following the termination of the Optionee’s Service. The Right of Repurchase may be
exercised automatically under Subsection (d) below. If the Right of Repurchase is exercised, the Company shall pay the 

  
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Optionee for each Restricted Share being repurchased an amount equal to the lower of (i) the Exercise Price of such Restricted Share or (ii) the Fair Market Value of such Restricted
Share at the time the Right of Repurchase is exercised. 
 (b) Lapse of Repurchase Right. The Right of Repurchase shall
lapse with respect to the Restricted Shares in accordance with the vesting schedule set forth in the Notice of Stock Option Grant. In the event that an Optionee, holding an option assumed or substituted by the Successor Corporation in a Change of
Control or holding Restricted Shares issued upon exercise of an option with respect to which the Successor Corporation has succeeded to a Right of Repurchase as a result of the Change of Control, is subject to an Involuntary Termination in
connection with, or within 12 months following consummation of, the Change of Control, then any assumed or substituted option held by the terminated Optionee at the time of termination shall accelerate and become exercisable as to the number of
Restricted Shares that would otherwise have vested and been exercisable as of the date 12 months following the date of the Optionee’s termination of his or her Continuous Service Status, and any Right of Repurchase applicable to any Restricted
Shares shall lapse as to the number of Restricted Shares as to which the Right of Repurchase would otherwise have lapsed as of the date 12 months following the date of the Optionee’s termination of his or her Continuous Service Status, in each
case assuming the Optionee remained in Continuous Service Status for such 12-month period. The acceleration of vesting and lapse of Right of Repurchase provided for in the previous sentence shall occur immediately prior to the effective date of the
Optionee’s termination of his or her Continuous Service Status. 
 (c) Escrow. Upon issuance, the certificate(s) for
Restricted Shares shall be deposited in escrow with the Company to be held in accordance with the provisions of this Agreement. Any additional or exchanged securities or other property described in Subsection (f) below shall immediately be
delivered to the Company to be held in escrow. All ordinary cash dividends on Restricted Shares (or on other securities held in escrow) shall be paid directly to the Optionee and shall not be held in escrow. Restricted Shares, together with any
other assets held in escrow under this Agreement, shall be (i) surrendered to the Company for repurchase upon exercise of the Right of Repurchase or the Right of First Refusal or (ii) released to the Optionee upon his or her request to the
extent that the Shares have ceased to be Restricted Shares (but not more frequently than once every six months). In any event, all Shares that have ceased to be Restricted Shares, together with any other vested assets held in escrow under this
Agreement, shall be released within 90 days after the earlier of (i) the termination of the Optionee’s Service or (ii) the lapse of the Right of First Refusal. 

(d) Exercise of Repurchase Right. The Company shall be deemed to have exercised its Right of Repurchase automatically for all
Restricted Shares as of the commencement of the Repurchase Period, unless the Company during the Repurchase Period notifies the holder of the Restricted Shares pursuant to Section 13(c) that it will not exercise its Right of Repurchase for some
or all of the Restricted Shares. During the Repurchase Period, the Company shall pay to the holder of the Restricted Shares the purchase price determined under Subsection (a) above for the Restricted Shares being repurchased. Payment shall be
made in cash or cash equivalents and/or by canceling indebtedness to the Company incurred by the Optionee in the purchase of the Restricted Shares. The certificate(s) representing the Restricted Shares being repurchased shall be delivered to the
Company. 

  
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 (e) Termination of Rights as Stockholder. If the Right of Repurchase is exercised in
accordance with this Section 7 and the Company makes available the consideration for the Restricted Shares being repurchased, then the person from whom the Restricted Shares are repurchased shall no longer have any rights as a holder of the
Restricted Shares (other than the right to receive payment of such consideration). Such Restricted Shares shall be deemed to have been repurchased pursuant to this Section 7, whether or not the certificate(s) for such Restricted Shares have
been delivered to the Company or the consideration for such Restricted Shares has been accepted. 
 (f) Additional or
Exchanged Securities and Property. In the event of a merger or consolidation of the Company with or into another entity, any other corporate reorganization, a stock split, the declaration of a stock dividend, the declaration of an extraordinary
dividend payable in a form other than stock, a spin-off, an adjustment in conversion ratio, a recapitalization or a similar transaction affecting the Company’s outstanding securities, any securities or other property (including cash or cash
equivalents) that are by reason of such transaction exchanged for, or distributed with respect to, any Restricted Shares shall immediately be subject to the Right of Repurchase. Appropriate adjustments to reflect the exchange or distribution of such
securities or property shall be made to the number and/or class of the Restricted Shares. Appropriate adjustments shall also be made to the price per share to be paid upon the exercise of the Right of Repurchase, provided that the aggregate purchase
price payable for the Restricted Shares shall remain the same. In the event of a merger or consolidation of the Company with or into another entity or any other corporate reorganization, the Right of Repurchase may be exercised by the Company’s
successor. 
 (g) Transfer of Restricted Shares. The Optionee shall not transfer, assign, encumber or otherwise dispose
of any Restricted Shares without the Company’s written consent, except as provided in the following sentence. The Optionee may transfer Restricted Shares to one or more members of the Optionee’s Immediate Family or to a trust established
by the Optionee for the benefit of the Optionee and/or one or more members of the Optionee’s Immediate Family, provided in either case that the Transferee agrees in writing on a form prescribed by the Company to be bound by all provisions of
this Agreement. If the Optionee transfers any Restricted Shares, then this Agreement shall apply to the Transferee to the same extent as to the Optionee. 
 (h) Assignment of Repurchase Right. The Board of Directors may freely assign the Company’s Right of Repurchase, in whole or in part. Any person who accepts an assignment of the Right of
Repurchase from the Company shall assume all of the Company’s rights and obligations under this Section 7. 
 SECTION 8. RIGHT OF
FIRST REFUSAL. 
 (a) Right of First Refusal. In the event that the Optionee proposes to sell, pledge or otherwise
transfer to a third party any Shares acquired under this Agreement, or any interest in such Shares, the Company shall have the Right of First Refusal with respect to all (and not less than all) of such Shares. If the Optionee desires to transfer
Shares acquired under this Agreement, the Optionee shall give a written Transfer Notice to the Company describing fully the proposed transfer, including the number of Shares proposed to be transferred, the proposed


  
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transfer price, the name and address of the proposed Transferee and proof satisfactory to the Company that the proposed sale or transfer will not violate any applicable federal, State or foreign
securities laws. The Transfer Notice shall be signed both by the Optionee and by the proposed Transferee and must constitute a binding commitment of both parties to the transfer of the Shares. The Company shall have the right to purchase all, and
not less than all, of the Shares on the terms of the proposal described in the Transfer Notice (subject, however, to any change in such terms permitted under Subsection (b) below) by delivery of a notice of exercise of the Right of First
Refusal within 30 days after the date when the Transfer Notice was received by the Company. 
 (b) Transfer of Shares. If
the Company fails to exercise its Right of First Refusal within 30 days after the date when it received the Transfer Notice, the Optionee may, not later than 90 days following receipt of the Transfer Notice by the Company, conclude a
transfer of the Shares subject to the Transfer Notice on the terms and conditions described in the Transfer Notice, provided that any such sale is made in compliance with applicable federal, State or foreign securities laws and not in violation of
any other contractual restrictions to which the Optionee is bound. Any proposed transfer on terms and conditions different from those described in the Transfer Notice, as well as any subsequent proposed transfer by the Optionee, shall again be
subject to the Right of First Refusal and shall require compliance with the procedure described in Subsection (a) above. If the Company exercises its Right of First Refusal, the parties shall consummate the sale of the Shares on the terms set
forth in the Transfer Notice within 60 days after the date when the Company received the Transfer Notice (or within such longer period as may have been specified in the Transfer Notice); provided, however, that in the event the Transfer Notice
provided that payment for the Shares was to be made in a form other than cash or cash equivalents paid at the time of transfer, the Company shall have the option of paying for the Shares with cash or cash equivalents equal to the present value of
the consideration described in the Transfer Notice. 
 (c) Additional or Exchanged Securities and Property. In the event
of a merger or consolidation of the Company with or into another entity, any other corporate reorganization, a stock split, the declaration of a stock dividend, the declaration of an extraordinary dividend payable in a form other than stock, a
spin-off, an adjustment in conversion ratio, a recapitalization or a similar transaction affecting the Company’s outstanding securities, any securities or other property (including cash or cash equivalents) that are by reason of such
transaction exchanged for, or distributed with respect to, any Shares subject to this Section 8 shall immediately be subject to the Right of First Refusal. Appropriate adjustments to reflect the exchange or distribution of such securities or
property shall be made to the number and/or class of the Shares subject to this Section 8. 
 (d) Termination of Right
of First Refusal. Any other provision of this Section 8 notwithstanding, in the event that the Stock is readily tradable on an established securities market when the Optionee desires to transfer Shares, the Company shall have no Right of
First Refusal, and the Optionee shall have no obligation to comply with the procedures prescribed by Subsections (a) and (b) above. 
 (e) Permitted Transfers. This Section 8 shall not apply to (i) a transfer by beneficiary designation, will or intestate succession or (ii) a transfer to one or more members of


  
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the Optionee’s Immediate Family or to a trust established by the Optionee for the benefit of the Optionee and/or one or more members of the Optionee’s Immediate Family, provided in
either case that the Transferee agrees in writing on a form prescribed by the Company to be bound by all provisions of this Agreement. If the Optionee transfers any Shares acquired under this Agreement, either under this Subsection (e) or after
the Company has failed to exercise the Right of First Refusal, then this Agreement shall apply to the Transferee to the same extent as to the Optionee. 
 (f) Termination of Rights as Stockholder. If the Company makes available, at the time and place and in the amount and form provided in this Agreement, the consideration for the Shares to be
purchased in accordance with this Section 8, then after such time the person from whom such Shares are to be purchased shall no longer have any rights as a holder of such Shares (other than the right to receive payment of such consideration in
accordance with this Agreement). Such Shares shall be deemed to have been purchased in accordance with the applicable provisions hereof, whether or not the certificate(s) therefor have been delivered as required by this Agreement. 

(g) Assignment of Right of First Refusal. The Board of Directors may freely assign the Company’s Right of First Refusal, in
whole or in part. Any person who accepts an assignment of the Right of First Refusal from the Company shall assume all of the Company’s rights and obligations under this Section 8. 
 SECTION 9. LEGALITY OF INITIAL ISSUANCE. 
 No Shares shall be issued upon
the exercise of this option unless and until the Company has determined that: 
 (a) It and the Optionee have
taken any actions required to register the Shares under the Securities Act or to perfect an exemption from the registration requirements thereof; 
 (b) Any applicable listing requirement of any stock exchange or other securities market on which Stock is listed has been satisfied; and 

(c) Any other applicable provision of federal, State or foreign law has been satisfied. 

SECTION 10. NO REGISTRATION RIGHTS. 
 The Company may, but shall not be obligated to, register or qualify the sale of Shares under the Securities Act or any other applicable law. The Company shall not be obligated to take any affirmative
action in order to cause the sale of Shares under this Agreement to comply with any law. 
 SECTION 11. RESTRICTIONS ON TRANSFER OF SHARES.

 (a) Securities Law Restrictions. Regardless of whether the offering and sale of Shares under the Plan have been
registered under the Securities Act or have been registered or 

  
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qualified under the securities laws of any State, the Company at its discretion may impose restrictions upon the sale, pledge or other transfer of such Shares (including the placement of
appropriate legends on stock certificates or the imposition of stop-transfer instructions) if, in the judgment of the Company, such restrictions are necessary or desirable in order to achieve compliance with the Securities Act, the securities laws
of any State or any other law. 
 (b) Market Stand-Off. In connection with any underwritten public offering by the
Company of its equity securities pursuant to an effective registration statement filed under the Securities Act, including the Company’s initial public offering, the Optionee or a Transferee shall not directly or indirectly sell, make any short
sale of, loan, hypothecate, pledge, offer, grant or sell any option or other contract for the purchase of, purchase any option or other contract for the sale of, or otherwise dispose of or transfer, or agree to engage in any of the foregoing
transactions with respect to, any Shares acquired under this Agreement without the prior written consent of the Company or its managing underwriter. Such restriction (the “Market Stand-Off”) shall be in effect for such period of time
following the date of the final prospectus for the offering as may be requested by the Company or such underwriter. In no event, however, shall such period exceed 180 days plus such additional period as may reasonably be requested by the Company or
such underwriter to accommodate regulatory restrictions on (i) the publication or other distribution of research reports or (ii) analyst recommendations and opinions, including (without limitation) the restrictions set forth in
Rule 2711(f)(4) of the National Association of Securities Dealers and Rule 472(f)(4) of the New York Stock Exchange, as amended, or any similar successor rules. The Market Stand-Off shall in any event terminate two years after the date of
the Company’s initial public offering. In the event of the declaration of a stock dividend, a spin-off, a stock split, an adjustment in conversion ratio, a recapitalization or a similar transaction affecting the Company’s outstanding
securities without receipt of consideration, any new, substituted or additional securities which are by reason of such transaction distributed with respect to any Shares subject to the Market Stand-Off, or into which such Shares thereby become
convertible, shall immediately be subject to the Market Stand-Off. In order to enforce the Market Stand-Off, the Company may impose stop-transfer instructions with respect to the Shares acquired under this Agreement until the end of the applicable
stand-off period. The Company’s underwriters shall be beneficiaries of the agreement set forth in this Subsection (b). This Subsection (b) shall not apply to Shares registered in the public offering under the Securities Act.

 (c) Investment Intent at Grant. The Optionee represents and agrees that the Shares to be acquired upon exercising this
option will be acquired for investment, and not with a view to the sale or distribution thereof. 
 (d) Investment Intent at
Exercise. In the event that the sale of Shares under the Plan is not registered under the Securities Act but an exemption is available that requires an investment representation or other representation, the Optionee shall represent and agree at
the time of exercise that the Shares being acquired upon exercising this option are being acquired for investment, and not with a view to the sale or distribution thereof, and shall make such other representations as are deemed necessary or
appropriate by the Company and its counsel. 

  
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 (e) Legends. All certificates evidencing Shares purchased under this Agreement shall
bear the following legend: 
 “THE SHARES REPRESENTED HEREBY MAY NOT BE SOLD, ASSIGNED, TRANSFERRED, ENCUMBERED OR IN ANY
MANNER DISPOSED OF, EXCEPT IN COMPLIANCE WITH THE TERMS OF A WRITTEN AGREEMENT BETWEEN THE COMPANY AND THE REGISTERED HOLDER OF THE SHARES (OR THE PREDECESSOR IN INTEREST TO THE SHARES). SUCH AGREEMENT GRANTS TO THE COMPANY CERTAIN RIGHTS OF FIRST
REFUSAL UPON AN ATTEMPTED TRANSFER OF THE SHARES AND CERTAIN REPURCHASE RIGHTS UPON TERMINATION OF SERVICE WITH THE COMPANY. THE SECRETARY OF THE COMPANY WILL UPON WRITTEN REQUEST FURNISH A COPY OF SUCH AGREEMENT TO THE HOLDER HEREOF WITHOUT
CHARGE.” 
 All certificates evidencing Shares purchased under this Agreement in an unregistered transaction shall bear the following
legend (and such other restrictive legends as are required or deemed advisable under the provisions of any applicable law): 

“THE SHARES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED,
OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL, THAT SUCH REGISTRATION IS NOT REQUIRED.” 

(f) Removal of Legends. If, in the opinion of the Company and its counsel, any legend placed on a stock certificate representing
Shares sold under this Agreement is no longer required, the holder of such certificate shall be entitled to exchange such certificate for a certificate representing the same number of Shares but without such legend. 

(g) Administration. Any determination by the Company and its counsel in connection with any of the matters set forth in this
Section 11 shall be conclusive and binding on the Optionee and all other persons. 
 SECTION 12. ADJUSTMENT OF SHARES. 

In the event of any transaction described in Section 8(a) of the Plan, the terms of this option (including, without limitation, the
number and kind of Shares subject to this option and the Exercise Price) shall be adjusted as set forth in Section 8(a) of the Plan. In the event that the Company is a party to a merger or consolidation, this option shall be subject to the
agreement of merger or consolidation, as provided in Section 8(b) of the Plan. 
 SECTION 13. MISCELLANEOUS PROVISIONS. 

(a) Rights as a Stockholder. Neither the Optionee nor the Optionee’s representative shall have any rights as a stockholder
with respect to any Shares subject to this option until the Optionee or the Optionee’s representative becomes entitled to receive such Shares by filing a notice of exercise and paying the Purchase Price pursuant to Sections 4 and 5.


  
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 (b) No Retention Rights. Nothing in this option or in the Plan shall confer upon the
Optionee any right to continue in Service for any period of specific duration or interfere with or otherwise restrict in any way the rights of the Company (or any Parent or Subsidiary employing or retaining the Optionee) or of the Optionee, which
rights are hereby expressly reserved by each, to terminate his or her Service at any time and for any reason, with or without cause. 
 (c) Notice. Any notice required by the terms of this Agreement shall be given in writing. It shall be deemed effective upon (i) personal delivery, (ii) deposit with the United States
Postal Service, by registered or certified mail, with postage and fees prepaid or (iii) deposit with Federal Express Corporation, with shipping charges prepaid. Notice shall be addressed to the Company at its principal executive office and to
the Optionee at the address that he or she most recently provided to the Company in accordance with this Subsection (c). 

(d) Entire Agreement. The Notice of Stock Option Grant, this Agreement and the Plan constitute the entire contract between the
parties hereto with regard to the subject matter hereof. They supersede any other agreements, representations or understandings (whether oral or written and whether express or implied) that relate to the subject matter hereof. 

(e) Choice of Law. This Agreement shall be governed by, and construed in accordance with, the laws of the State of Delaware, as
such laws are applied to contracts entered into and performed in such State. 
 SECTION 14. ACKNOWLEDGEMENTS OF THE OPTIONEE. 

(a) Tax Consequences. The Optionee agrees that the Company does not have a duty to design or administer the Plan or its other
compensation programs in a manner that minimizes the Optionee’s tax liabilities. The Optionee shall not make any claim against the Company or its Board of Directors, officers or employees related to tax liabilities arising from this option or
the Optionee’s other compensation. In particular, the Optionee acknowledges that this option is exempt from Section 409A of the Code only if the Exercise Price is at least equal to the Fair Market Value per Share on the Date of Grant.
Since Shares are not traded on an established securities market, the determination of their Fair Market Value is made by the Board of Directors or by an independent valuation firm retained by the Company. The Optionee acknowledges that there is no
guarantee in either case that the Internal Revenue Service will agree with the valuation, and the Optionee shall not make any claim against the Company or its Board of Directors, officers or employees in the event that the Internal Revenue Service
asserts that the valuation was too low. 
 (b) Electronic Delivery of Documents. The Optionee agrees that the Company may
deliver by email all documents relating to the Plan or this option (including, without limitation, a copy of the Plan) and all other documents that the Company is required to deliver to its security holders (including, without limitation,
disclosures that may be required by the Securities and Exchange Commission). The Optionee also agrees that the Company may deliver these documents by posting them on a website maintained by the Company or by a third party under contract with the
Company. If the Company posts these documents on a website, it shall notify the Optionee by email. 

  
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 SECTION 15. DEFINITIONS. 
 (a) “Affiliate” means an entity other than a Subsidiary which, together with the Company, is under common control of a third person or entity. 

(b) “Agreement” shall mean this Stock Option Agreement. 

(c) “Board of Directors” shall mean the Board of Directors of the Company, as constituted from time to time or, if a
Committee has been appointed, such Committee. 
 (d) “Cause” for termination of an Optionee’s Continuous
Service Status will exist if the Optionee is terminated for any of the following reasons: (i) Optionee’s willful failure substantially to perform his or her duties and responsibilities to the Company or deliberate violation of a Company
policy; (ii) Optionee’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 Optionee of any proprietary information or trade secrets of the Company or any other party to whom the Optionee owes an obligation of nondisclosure as a result of his or her relationship with the Company; or (iv) Optionee’s
willful breach of any of his or her obligations under any written agreement or covenant with the Company. The determination as to whether an Optionee is being terminated for Cause shall be made in good faith by the Company and shall be final and
binding on the Optionee. The foregoing definition does not in any way limit the Company’s ability to terminate an Optionee’s employment or consulting relationship at any time, with or without Cause or notice, and the term
“Company” will be interpreted to include any Subsidiary, Parent, Affiliate or successor thereto, if appropriate. 

(e) “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. 
 (f) “Code” shall mean the Internal Revenue Code of 1986, as
amended. 
 (g) “Committee” shall mean a committee of the Board of Directors, as described in Section 2 of
the Plan. 
 (h) “Company” shall mean Synacor, Inc., a Delaware corporation. 

(i) “Consultant” shall mean a person who performs bona fide services for the Company, a Parent or a Subsidiary as a
consultant or advisor, excluding Employees and Outside Directors. 
 (j) “Continuous Service Status” means the
absence of any interruption or termination of Service. Continuous Service Status as an Employee or Consultant shall not be 

  
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considered interrupted in the case of: (i) sick leave; (ii) military leave; (iii) any other leave of absence approved by the Company, 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. 
 (k) “Date of Grant” shall mean the date of grant specified in the
Notice of Stock Option Grant, which date shall be the later of (i) the date on which the Board of Directors resolved to grant this option or (ii) the first day of the Optionee’s Service. 

(l) “Disability” shall mean that the Optionee is unable to engage in any substantial gainful activity by reason of any
medically determinable physical or mental impairment which can be expected to result in death or which has lasted, or can be expected to last, for a continuous period of not less than 12 months. 

(m) “Employee” shall mean any individual who is a common-law employee of the Company, a Parent or a Subsidiary.

 (n) “Exercise Price” shall mean the amount for which one Share may be purchased upon exercise of this
option, as specified in the Notice of Stock Option Grant. 
 (o) “Fair Market Value” shall mean the fair market
value of a Share, as determined by the Board of Directors in good faith. Such determination shall be conclusive and binding on all persons. 
 (p) “Immediate Family” shall mean 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. 
 (q) “Involuntary Termination”
means termination of an Optionee’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 Optionee within 30 days following (A) a material reduction in the Optionee’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 Optionee’s work site to a facility or location more than 50 miles from the Optionee’s principal work site for the Company at the time of the Change of Control; or (C) a reduction in Optionee’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 Optionee’s by the same percentage amount as part of a general salary level reduction shall not
constitute such a salary reduction. 

  
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 (r) “ISO” shall mean an employee incentive stock option described in
Section 422(b) of the Code. 
 (s) “Notice of Stock Option Grant” shall mean the document so entitled to
which this Agreement is attached. 
 (t) “NSO” shall mean a stock option not described in Sections 422(b)
or 423(b) of the Code. 
 (u) “Optionee” shall mean the person named in the Notice of Stock Option Grant.

 (v) “Outside Director” shall mean a member of the Board of Directors who is not an Employee. 

(w) “Parent” shall mean any corporation (other than the Company) in an unbroken chain of corporations ending with the
Company, if each of the corporations other than the Company owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain. 

(x) “Plan” shall mean the Synacor, Inc. 2006 Stock Plan, as in effect on the Date of Grant. 

(y) “Purchase Price” shall mean the Exercise Price multiplied by the number of Shares with respect to which this option
is being exercised. 
 (z) “Repurchase Period” shall mean a period of 90 consecutive days commencing on the
date when the Optionee’s Service terminates for any reason, including (without limitation) death or disability. 
 (aa)
“Restricted Share” shall mean a Share that is subject to the Right of Repurchase. 
 (bb) “Right of
First Refusal” shall mean the Company’s right of first refusal described in Section 8. 
 (cc) “Right
of Repurchase” shall mean the Company’s right of repurchase described in Section 7. 
 (dd)
“Securities Act” shall mean the Securities Act of 1933, as amended. 
 (ee) “Service” shall
mean service as an Employee, Outside Director or Consultant. 
 (ff) “Share” shall mean one share of Stock, as
adjusted in accordance with Section 8 of the Plan (if applicable). 
 (gg) “Stock” shall mean the Common
Stock of the Company. 

  
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 (hh) “Subsidiary” shall mean any corporation (other than the Company) in an
unbroken chain of corporations beginning with the Company, if each of the corporations other than the last corporation in the unbroken chain owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the
other corporations in such chain. 
 (ii) “Transferee” shall mean any person to whom the Optionee has directly
or indirectly transferred any Share acquired under this Agreement. 
 (jj) “Transfer Notice” shall mean the
notice of a proposed transfer of Shares described in Section 8. 
 (kk) “Voting Agreement” shall mean the
Third Amended and Restated Voting Agreement in substantially the form attached hereto. 

  
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 Exhibit A 

Voting Agreement 

  
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