Document:

OPTICAL TECHNOLOGY GROUP 1998 STOCK INCENTIVE PLAN

 EXHIBIT 4.3 
  

OPTICAL TECHNOLOGY GROUP, INC. 
  
 1998 STOCK INCENTIVE PLAN 
  

	1.	Purpose 

  
 The purpose of this 1998 Stock Incentive Plan (the “Plan”) of Optical Technology Group, Inc., a Delaware corporation (the “Company”), is to advance the interests of the Company’s stockholders
by enhancing the Company’s ability to attract, retain and motivate persons who make (or are expected to make) important contributions to the Company by providing such persons with equity ownership opportunities and performance-based incentives
and thereby better aligning the interests of such persons with those of the Company’s stockholders. Except where the context otherwise requires, the term “Company” shall include any present or future subsidiary corporations of Optical
Technology Group, Inc. as defined in Section 424(f) of the Internal Revenue Code of 1986, as amended, and any regulations promulgated thereunder (the “Code”). 
  

	2.	Eligibility 

  
 All of the Company’s employees, officers, directors, consultants and advisors (and any individuals who have accepted an offer for employment) are eligible to be granted options, restricted stock awards, or other
stock-based awards (each, an “Award”) under the Plan. Each person who has been granted an Award under the Plan shall be deemed a “Participant”. 
  

	3.	Administration, Delegation 

  
 (a) Administration by Board of Directors. The Plan will be administered by the Board of Directors of the Company (the “Board”). The Board shall
have authority to grant Awards and to adopt, amend and repeal such administrative rules, guidelines and practices relating to the Plan as it shall deem advisable. The Board may correct any defect, supply any omission or reconcile any inconsistency
in the Plan or any Award in the manner and to the extent it shall deem expedient to carry the Plan into effect and it shall be the sole and final judge of such expediency. All decisions by the Board shall be made in the Board’s sole discretion
and shall be final and binding on all persons having or claiming any interest in the Plan or in any Award. No director or person acting pursuant to the authority delegated by the Board shall be liable for any action or determination relating to or
under the Plan made in good faith. 
  
 (b) Delegation to Executive
Officers. To the extent permitted by applicable law, the Board may delegate to one or more executive officers of the Company the power to make Awards and exercise such other powers under the Plan as the Board may determine, provided that the Board
shall fix the maximum number of shares subject to Awards and the maximum number of shares for any one Participant to be made by such executive officers. 
  
 (c) Appointment of Committees. To the extent permitted by applicable law, the Board may delegate any or all of its powers under the Plan to one or more
committees 

 
or subcommittees of the Board (a “Committee”). If and when the common stock, $.O1 par value per share, of the Company (the “Common
Stock”) is registered under the Securities Exchange Act of 1934 (the “Exchange Act”), the Board shall appoint one such Committee of not less than two members, each member of which shall be an “outside director” within the
meaning of Section 162(m) of the Code and a “non-employee director” as defined in Rule 16b-3 promulgated under the Exchange Act.” All references in the Plan to the “Board” shall mean the Board or a Committee of the Board or
the executive officer referred to in Section 3(b) to the extent that the Board’s powers or authority under the Plan have been delegated to such Committee or executive officer. 
  

	4.	Stock Available for Awards 

  
 (a) Number of Shares. Subject to adjustment under Section 8, Awards may be made under the Plan for up to 2,264,706 shares of Common Stock. If any Award
expires or is terminated, surrendered or canceled without having been fully exercised or is forfeited in whole or in part or results in any Common Stock not being issued, the unused Common Stock covered by such Award shall again be available for the
grant of Awards under the Plan, subject, however, in the case of Incentive Stock Options (as hereinafter defined), to any limitation required under the Code. Shares issued under the Plan may consist in whole or in part of authorized but unissued
shares or treasury shares. 
  
 (b) Per-Participant Limit. Subject
to adjustment under Section 8, for Awards granted after the Common Stock is registered under the Exchange Act, the maximum number of shares of Common Stock with respect to which an Award may be granted to any Participant under the Plan shall be
250,000 per calendar year. The per-Participant limit described in this Section 4(b) shall be construed and applied consistently with Section 162(m) of the Code. 
  

	5.	Stock Options 

  
 (a) General. The Board may grant options to purchase Common Stock (each, an “Option”) and determine the number of shares of Common Stock to be
covered by each option, the exercise price of each Option and the conditions and limitations applicable to the exercise of each Option, including conditions relating to applicable federal or state securities laws, as it considers necessary or
advisable. An Option which is not intended to be an Incentive Stock Option (as hereinafter defined) shall be designated a “Nonstatutory Stock Option.” 
  

(b) Incentive Stock Options. An Option that the Board intends to be an “incentive stock option” as defined in Section 422 of the Code (an
“Incentive Stock Option”) shall only be granted to employees of the Company and shall be subject to and shall be construed consistently with the requirements of Section 422 of the Code. The Company shall have no liability to a Participant,
or any other party, if an Option (or any part thereof) which is intended to be an Incentive Stock Option is not an Incentive Stock Option. 
  

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 (c) Exercise Price. The Board shall establish the exercise price at the time each option is granted and
specify it in the applicable option agreement. 
  
 (d) Duration of
Options. Each option shall be exercisable at such times and subject to such terms and conditions as the Board may specify in the applicable option agreement. 
  
 (e) Exercise of Option. Options may be exercised by delivery to the company of a written notice of exercise signed by the proper person or by any other
form of notice (including electronic notice) approved by the Board together with payment in full as specified in Section 5(f) for the number of shares for which the Option is exercised. 
  
 (f) Payment Upon Exercise. Common Stock purchased upon the exercise of an option granted under the Plan shall be paid for as
follows: 
  
 (1) in cash or by check, payable to
the order of the Company; 
  
 (2) except as the
Board may, in its sole discretion, otherwise provide in an option agreement, (i) delivery of an irrevocable and unconditional undertaking by a creditworthy broker to deliver promptly to the Company sufficient funds to pay the exercise price, or (ii)
delivery by the Participant to the Company of a copy of irrevocable and unconditional instructions to a creditworthy broker to deliver promptly to the Company cash or a check sufficient to pay the exercise price; 
  
 (3) while the Common Stock is registered under the Exchange
Act, delivery of shares of Common Stock owned by the Participant valued at their fair market value as determined by (or in a manner approved by) the Board in good faith (“Fair Market Value”), which Common Stock was owned by the Participant
at least six months prior to such delivery; 
  
 (4) to the extent permitted by the Board, in its sole discretion (i) by delivery of a promissory note of the Participant to the Company on terms determined by the Board, or (ii) by payment of such other lawful consideration as the Board may
determine; or 
  
 (5) any combination of the
above permitted forms of payment. 
  

	6.	Restricted Stock 

  
 (a) Grants. The Board may grant Awards entitling recipients to acquire shares of Common Stock, subject to the right of the Company to repurchase all or
part of such shares at their issue price or other stated or formula price (or to require forfeiture of such shares if issued at no cost) from the recipient in the event that conditions specified by the Board in the applicable Award are not satisfied
prior to the end of the applicable restriction period or periods established by the Board for such Award (each, “Restricted Stock Award”). 
  

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 (b) Terms and Conditions. The Board shall determine the terms and conditions of any such Restricted Stock
Award, including the conditions for repurchase (or forfeiture) and the issue price, if any. Any stock certificates issued in respect of a Restricted Stock Award shall be registered in the name of the Participant and, unless otherwise determined by
the Board, deposited by the Participant, together with a stock power endorsed in blank, with the Company (or its designee). At the expiration of the applicable restriction periods, the Company (or such designee) shall deliver the certificates no
longer subject to such restrictions to the Participant or if the Participant has died, to the beneficiary designated, in a manner determined by the Board, by a Participant to receive amounts due or exercise rights of the Participant in the event of
the Participant’s death (the “Designated Beneficiary”). In the absence of an effective designation by a Participant, Designated Beneficiary shall mean the Participant’s estate. 
  

	7.	Other Stock-Based Awards 

  
 The Board shall have the right to grant other Awards based upon the Common Stock having such terms and conditions as the Board may determine, including the grant of shares based upon certain conditions, the grant of
securities convertible into Common Stock and the grant of stock appreciation rights. 
  

	8.	Adjustments for Changes in Common Stock and Certain Other Events 

  
 (a) Changes in Capitalization. In the event of any stock split, reverse stock split, stock dividend, recapitalization, combination of shares,
reclassification of shares, spin-off or other similar change in capitalization or event, or any distribution to holders of Common Stock other than a normal cash dividend, (i) the number and class of securities available under this Plan, (ii) the
per-Participant limit set forth in Section 4(b), (iii) the number and class of securities and exercise price per share subject to each outstanding option, (iv) the repurchase price per share subject to each outstanding Restricted Stock Award, and
(v) the terms of each other outstanding Award shall be appropriately adjusted by the Company (or substituted Awards may be made, if applicable) to the extent the Board shall determine, in good faith, that such an adjustment (or substitution) is
necessary and appropriate. If this Section 8(a) applies and Section 8(c) also applies to any event, Section 8(c) shall be applicable to such event, and this Section 8(a) shall not be applicable. 
  
 (b) Liquidation or Dissolution. In the event of a proposed liquidation or
dissolution of the Company, the Board shall upon written notice to the Participants provide that all then unexercised Options will (i) become exercisable in full as of a specified time at least 10 business days prior to the effective date of such
liquidation or dissolution and (ii) terminate effective upon such liquidation or dissolution, except to the extent exercised before such effective date. The Board may specify the effect of a liquidation or dissolution on any Restricted Stock Award
or other Award granted under the Plan at the time of the grant of such Award. 
  

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 (c) Acquisition and Change in Control Events 
  
 (1) Definitions 
  
 (a) An “Acquisition Event” shall mean: 

 
 (i) any merger or consolidation of the Company with or
into another entity as a result of which the Common Stock is converted into or exchanged for the right to receive cash, securities or other property; or 
  
 (ii) any exchange of shares of the Company for cash, securities or other property pursuant to a statutory share exchange transaction.

  
 (b) A “Change in Control Event”
shall mean: 
  
 (i) the acquisition by an
individual, entity or group (within the meaning of Section 13(d)(3) or 14(d)(2) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) (a “Person”) of beneficial ownership of any capital stock of the Company if,
after such acquisition, such Person beneficially owns (within the meaning of Rule 13d-3 promulgated under the Exchange Act) 3096 or more of either (x) the then-outstanding shares of common stock of the Company (the “Outstanding Company Common
Stock”) or (y) the combined voting power of the then-outstanding securities of the Company entitled to vote generally in the election of directors (the “Outstanding Company Voting Securities”); provided, however, that for purposes of
this subsection (i), the following acquisitions shall not constitute a Change in Control Event: (A) any acquisition directly from the Company (excluding an acquisition pursuant to the exercise, conversion or exchange of any security exercisable for,
convertible into or exchangeable for common stock or voting securities of the Company, unless the Person exercising, converting or exchanging such security acquired such security directly from the Company or an underwriter or agent of the Company),
(B) any acquisition by any employee benefit plan (or related trust) sponsored or maintained by the Company or any corporation controlled by the Company, (C) any acquisition by any corporation pursuant to a Business Combination (as defined below)
which complies with clauses (x) and (y) of subsection (iii) of this definition or (D) any acquisition by Richard A. Kay (“Exempt Party”) of any Shares of Common Stock; or 
  
 (ii) such time as the Continuing Directors (as defined below) do not constitute a majority of the Board
(or, if applicable, the Board of Directors of a successor corporation to the Company), where the term “Continuing Director” means at any date a member 

  

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of the Board (x) who was a member of the Board on the date of the initial adoption of this Plan by the Board or (y) who was nominated or elected subsequent
to such date by at least a majority of the directors who were Continuing Directors at the time of such nomination or election or whose election to the Board was recommended or endorsed by at least a majority of the directors who were Continuing
Directors at the time of such nomination or election; provided, however, that there shall be excluded from this clause (y) any individual whose initial assumption of office occurred as a result of an actual or threatened election contest with
respect to the election or removal of directors or other actual or threatened solicitation of proxies or consents, by or on behalf of a person other than the Board; or 
  
 (iii) the consummation of a merger, consolidation, reorganization or statutory share exchange involving the
Company or a sale or other disposition of all or substantially all of the assets of the Company (a “Business Combination”), unless, immediately following such Business Combination, each of the following two conditions is satisfied: (x) all
or substantially all of the individuals and entities who were the beneficial owners of the Outstanding Company Common Stock and Outstanding Company Voting Securities immediately prior to such Business Combination beneficially own, directly or
indirectly, more than 50% of the then-outstanding shares of common stock and the combined voting power of the then-outstanding securities entitled to vote generally in the election of directors, respectively, of the resulting or acquiring
corporation in such Business Combination (which shall include, without limitation, a corporation which as a result of such transaction owns the Company or substantially all of the Company’s assets either directly or through one or more
subsidiaries) (such resulting or acquiring corporation is referred to herein as the “Acquiring Corporation”) in substantially the same proportions as their ownership of the Outstanding Company Common Stock and Outstanding Company Voting
Securities, respectively, immediately prior to such Business Combination and (y) no Person (excluding the Acquiring Corporation or any employee benefit plan (or related trust) maintained or sponsored by the Company or by the Acquiring Corporation or
the Exempt Person) beneficially owns, directly or indirectly, 30% or more of the then-outstanding shares of common stock of the Acquiring Corporation, or of the combined voting power of the then-outstanding securities of such corporation entitled to
vote generally in the election of directors (except to the extent that such ownership existed prior to the Business Combination). 
  

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 (2) Effect on Options 
  
 (a) Acquisition Event. Upon the occurrence of an Acquisition Event (regardless of whether such event also
constitutes a Change in Control Event), or the execution by the Company of any agreement with respect to an Acquisition Event (regardless of whether such event will result in a Change in Control Event), the Board shall provide that all outstanding
Options shall be assumed, or equivalent options shall be substituted, by the acquiring or succeeding corporation (or an affiliate thereof); provided that if such Acquisition Event also constitutes a Change in Control Event, except to the extent
specifically provided to the contrary in the instrument evidencing any Option or any other agreement between a Participant and the Company, such assumed or substituted options shall be immediately exercisable in full upon the occurrence of such
Acquisition Event for all Options held by Participants that have had a relationship with the Company as an employee, officer, director, consultant or advisor for one year prior to such Change in Control Event. For purposes hereof, an Option shall be
considered to be assumed if, following consummation of the Acquisition Event, the Option confers the right to purchase, for each share of Common Stock subject to the Option immediately prior to the consummation of the Acquisition Event, the
consideration (whether cash, securities or other property) received as a result of the Acquisition Event by holders of Common Stock for each share of Common Stock held immediately prior to the consummation of the Acquisition Event (and if holders
were offered a choice of consideration, the type of consideration chosen by the holders of a majority of the outstanding shares of Common Stock); provided, however, that if the consideration received as a result of the Acquisition Event is not
solely common stock of the acquiring or succeeding corporation (or an affiliate thereof), the Company may, with the consent of the acquiring or succeeding corporation, provide for the consideration to be received upon the exercise of Options to
consist solely of common stock of the acquiring or succeeding corporation (or an affiliate thereof) equivalent in fair market value to the per share consideration received by holders of outstanding shares of Common Stock as a result of the
Acquisition Event. 
  
 Notwithstanding the
foregoing, if the acquiring or succeeding corporation (or an affiliate thereof does not agree to assume, or substitute for, such Options, then the Board shall, upon written notice to the Participants, provide that all then unexercised Options will
become exercisable in full as of a specified time prior to the Acquisition Event and will terminate immediately prior to the consummation of such Acquisition Event, except to the extent exercised by the Participants before the consummation of such
Acquisition Event; provided, however, in the event of an Acquisition Event under the terms of which holders of Common Stock will receive upon consummation thereof a cash payment for each share of Common Stock surrendered pursuant to such Acquisition
Event (the “Acquisition Price”), then the Board may instead provide that all outstanding Options shall terminate upon consummation of such 

  

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Acquisition Event and that each Participant shall receive, in exchange therefor, a cash payment equal to the amount (if any) by which (A) the Acquisition
Price multiplied by the number of shares of Common Stock subject to such outstanding options (whether or not then exercisable), exceeds (B) the aggregate exercise price of such Options. 
  
 (b) Change in Control Event that is not an Acquisition Event. Upon the occurrence of a Change in Control
Event that does not also constitute an Acquisition Event, except to the extent specifically provided to the contrary in the instrument evidencing any option or any other agreement between a Participant and the Company, all options then-outstanding
shall automatically become immediately exercisable in full for all Options held by Participants that have had a relationship with the Company as an employee, officer, director, consultant or advisor for one year prior to such Change in Control
Event. 
  
 (3) Effect on Restricted Stock Awards

  
 (a) Acquisition Event that is not a Change in
Control Event. Upon the occurrence of an Acquisition Event that is not a Change in Control Event, the repurchase and other rights of the Company under each outstanding Restricted Stock Award shall inure to the benefit of the Company’s successor
and shall apply to the cash, securities or other property which the Common Stock was converted into or exchanged for pursuant to such Acquisition Event in the same manner and to the same extent as they applied to the Common Stock subject to such
Restricted Stock Award. 
  
 (b) Change in Control
Event. Upon the occurrence of a Change in Control Event (regardless of whether such event also constitutes an Acquisition Event), except to the extent specifically provided to the contrary in the instrument evidencing any Restricted Stock Award or
any other agreement between a Participant and the Company, all restrictions and conditions on all Restricted Stock Awards then-outstanding shall automatically be deemed terminated or satisfied for all Options held by Participants that have had a
relationship with the Company as an employee, officer, director, consultant or advisor for one year prior to such Change in Control Event. 
  
 (4) Effect on Other Awards 
  
 (a) Acquisition Event that is not a Change in Control Event. The Board shall specify the effect of an Acquisition Event that is not a
Change in Control Event on any other Award granted under the Plan at the time of the grant of such Award. 
  

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 (b) Change in Control Event. Upon the occurrence of a Change in Control Event (regardless
of whether such event also constitutes an Acquisition Event), except to the extent specifically provided to the contrary in the instrument evidencing any other Award or any other agreement between a Participant and the Company, all other Awards
shall become exercisable, realizable or vested in full, or shall be free of all conditions or restrictions, as applicable to each such Award for all options held by Participants that have had a relationship with the Company as an employee, officer,
director, consultant or advisor for one year prior to such Change in Control Event. 
  

	9.	General Provisions Applicable to Awards 

  
 (a) Transferability of Awards. Except as the Board may otherwise determine or provide in an Award, Awards shall not be sold, assigned, transferred,
pledged or otherwise encumbered by the person to whom they are granted, either voluntarily or by operation of law, except by will or the laws of descent and distribution, and, during the life of the Participant, shall be exercisable only by the
Participant. References to a Participant, to the extent relevant in the context, shall include references to authorized transferees. 
  
 (b) Documentation. Each Award shall be evidenced by a written instrument in such form as the Board shall determine. Each Award may contain terms and
conditions in addition to those set forth in the Plan. 
  
 (c)
Board Discretion. Except as otherwise provided by the Plan, each Award may be made alone or in addition or in relation to any other Award. The terms of each Award need not be identical, and the Board need not treat Participants uniformly.

  
 (d) Termination of Status. The Board shall determine the
effect on an Award of the disability, death, retirement, authorized leave of absence or other change in the employment or other status of a Participant and the extent to which, and the period during which, the Participant, the Participant’s
legal representative, conservator, guardian or Designated Beneficiary may exercise rights under the Award. 
  
 (e) Withholding. Each Participant shall pay to the Company, or make provision satisfactory to the Board for payment of, any taxes required by law to be
withheld in connection with Awards to such Participant no later than the date of the event creating the tax liability. Except as the Board may otherwise provide in an Award, Participants may satisfy such tax obligations in whole or in part by
delivery of shares of Common Stock, including shares retained from the Award creating the tax obligation, valued at their Fair Market Value. The Company may, to the extent permitted by law and to the extent not otherwise paid, deduct any such tax
obligations from any payment of any kind otherwise due to a Participant. 
  
 (f) Amendment of Award. The Board may amend, modify or terminate any outstanding Award, including but not limited to, substituting therefor another Award of 

  

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the same or a different type, changing the date of exercise or realization, and converting an Incentive Stock Option to a Nonstatutory Stock Option, provided
that the Participant’s consent to such action shall be required unless the Board determines that the action, taking into account any related action, would not materially and adversely affect the Participant. 
  
 (g) Conditions on Delivery of Stock. The Company will not be obligated to
deliver any shares of Common Stock pursuant to the Plan or to remove restrictions from shares previously delivered under the Plan until (i) all conditions of the Award have been met or removed to the satisfaction of the Company, (ii) in the opinion
of the Company’s counsel, all other legal matters in connection with the issuance and delivery of such shares have been satisfied, including any applicable securities laws and any applicable stock exchange or stock market rules and regulations,
and (iii) the Participant has executed and delivered to the Company such representations or agreements as the Company may consider appropriate to satisfy the requirements of any applicable laws, rules or regulations. 
  
 (h) Acceleration. The Board may at any time provide that any Options shall
become immediately exercisable in full or in part, that any Restricted Stock Awards shall be free of restrictions in full or in part or that any other Awards may become exercisable in full or in part or free of some or all restrictions or
conditions, or otherwise realizable in full or in part, as the case may be. 
  

	10.	Miscellaneous 

  
 (a) No Right To Employment or Other Status. No person shall have any claim or right to be granted an Award, and the grant of an Award shall not be
construed as giving a Participant the right to continued employment or any other relationship with the Company. The Company expressly reserves the right at any time to dismiss or otherwise terminate its relationship with a Participant free from any
liability or claim under the Plan, except as expressly provided in the applicable Award. 
  
 (b) No Rights As Stockholder. Subject to the provisions of the applicable Award, no Participant or Designated Beneficiary shall have any rights as a stockholder with respect to any shares of Common Stock to be
distributed with respect to an Award until becoming the record holder of such shares. Notwithstanding the foregoing, in the event the Company effects a split of the Common Stock by means of a stock dividend and the exercise price of and the number
of shares subject to such Option are adjusted as of the date of the distribution of the dividend (rather than as of the record date for such dividend), then an optionee who exercises an option between the record date and the distribution date for
such stock dividend shall be entitled to receive, on the distribution date, the stock dividend with respect to the shares of Common Stock acquired upon such Option exercise, notwithstanding the fact that such shares were not outstanding as of the
close of business on the record date for such stock dividend. 
  
 (c) Effective Date and Term of Plan. The Plan shall become effective on the date on which it is adopted by the Board. No Awards shall be granted under the Plan 

  

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after the completion of ten years from the earlier of (i) the date on which the Plan was adopted by the Board or (ii) the date the Plan was approved by the
Company’s stockholders, but Awards previously granted may extend beyond that date. 
  
 (d) Amendment of Plan. The Board may amend, suspend or terminate the Plan or any portion thereof at any time. 
  
 (e) Governing Law. The provisions of the Plan and all Awards made hereunder shall be governed by and interpreted in accordance with the laws of the State
of Delaware, without regard to any applicable conflicts of law. 
  

 -11-SMART STORAGE, INC. 1994 STOCK PLAN

 EXHIBIT 4.4 
  

SMART STORAGE, INC. 
  
 1994 STOCK PLAN 
  
 Amended March 12, 1998 
  
 1. Purpose. This 1994 Stock Plan (the “Plan”) is intended to provide incentives: (a) to the officers and other employees of Smart Storage, Inc. (the “Company”), its parent (if any) and any present
or future subsidiaries of the Company (collectively, “Related Corporations”) by providing them with opportunities to purchase stock in the Company pursuant to options granted hereunder which qualify as “incentive stock options”
under Section 422A(b) of the Internal Revenue Code of 1986 (the “Code”) (“ISO” or “ISOs”); (b) to directors, officers, employees and consultants of the Company and Related Corporations by providing them with
opportunities to purchase stock in the Company pursuant to options granted hereunder which do not qualify as ISOs (“Non-Qualified option” or’ “Non-Qualified Options”); (c) to directors, officers, employees and consultants of
the Company and Related Corporations by providing them with awards of stock in the Company (“Awards”); and (d) to directors, officers, employees and consultants of the Company and Related Corporations by providing them with opportunities
to make direct purchases of stock in the Company (“Purchases”). Both ISOs and Non-Qualified Options are referred to hereafter individually as an “Option” and collectively as “Options”. Options, Awards and authorizations
to make Purchases are referred to hereafter collectively as “Stock Rights”. As used herein, the terms “parent” and “subsidiary” mean “parent corporation” and “subsidiary corporation”, respectively,
as those terms are defined in Section 425 of the Code. 
  
 2.
Administration of the Plan. 
  
 A. The Plan shall be administered
by the Board of Directors of the Company (the “Board”). The Board may appoint a Stock Plan Committee (the “Committee”) of three or more of its members to administer this Plan. No member of the Committee, while a member, shall be
eligible to participate in the Plan. Subject to ratification of the grant or authorization of each Stock Right by the Board (if so required by applicable state law), and subject to the terms of the Plan, the Committee, if so appointed, shall have
the authority to (i) determine the employees of the Company and Related Corporations (from among the class of employees eligible under paragraph 3 to receive ISOs) to whom ISOs may be granted, and to determine (from among the class of individuals
and entities eligible under paragraph 3 to receive Non-Qualified Options and Awards and to make Purchases) to whom Non-Qualified Options, Awards and authorizations to make Purchases may be granted; (ii) determine the time or times at which Options
or Awards may be granted or Purchases made; (iii) determine the option price of shares subject to each Option, which price shall not be less than the minimum price specified in paragraph 6, and the purchase price of shares subject to each Purchase;
(iv) determine whether each Option granted shall be an ISO or a Non-Qualified Option; (v) determine (subject to 

 
paragraph 7) the time or times when each Option shall become exercisable and the duration of the exercise period; (vi) determine whether restrictions such as
repurchase options are to be imposed on shares subject to Options, Awards and Purchases and the nature of such restrictions, if any, and (vii) interpret the Plan and prescribe and rescind rules and regulations relating to it If the Committee
determines to issue a Non-Qualified Option, it shall take whatever actions it deems necessary, under Section 422A of the Code and the regulations promulgated thereunder, to ensure that such option is not treated as an ISO. The interpretation and
construction by the Committee of any provisions of the Plan or of any Stock Right granted under it shall be final unless otherwise determined by the Board. The Committee may from time to time adopt such rules and regulations for carrying out the
Plan as it may deem best. No member of the Board or the Committee shall be liable for any action or determination made in good faith with respect to the Plan or any Stock Right granted under it. 
  
 B. The Committee may select one of its members as its chairman, and shall
hold meetings at such time and places as it may determine. Acts by a majority of the Committee, or acts reduced to or approved in writing by a majority of the members of the Committee, shall be the valid acts of the Committee. All references in this
Plan to the Committee shall mean the Board if no Committee has been appointed. From time to time the Board may increase or decrease the of the Committee and appoint additional members thereof, remove members (with or without cause) and appoint new
members in substitution therefor, fill vacancies however caused, or remove all members of the Committee and thereafter directly administer the Plan. 
  
 C. Stock Rights may be granted to members of the Board, but any such grant shall be made and approved in accordance with paragraph 2(D), if applicable.
All grants of Stock Rights to members of the Board shall in all other respects be made in accordance with the provisions of this Plan applicable to other eligible persons. Members of the Board who are either (i) eligible for Stock Rights pursuant to
the Plan or (ii) have been granted Stock Rights may vote on any matters affecting the administration of the Plan or the grant of any Stock Rights pursuant to the Plan, except that no such member shall act upon the granting to himself of Stock
Rights, but any such member may be counted in determining the existence of a quorum at any meeting of the Board during which action is taken with respect to the granting to him of Stock Rights. 
  
 D. In the event the Company registers any class of any equity security
pursuant to Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), any grant of Stock Rights to a member of the Board (made at any time from the effective date of such registration until six months after the
termination of such registration) must be approved by a majority vote of the other members of the Board; provided, however, that if a majority of the Board is eligible to participate in the Plan or in any other stock option or other stock plan of
the Company or any of its affiliates, or has been so eligible at any time within the preceding year, any grant of Stock Rights to a member of the Board must be made by, or only in accordance with the recommendation of, the Committee or a committee
consisting of three or more persons, who may but need not be directors or employees of the Company, appointed by the Board but having full 

  

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authority to act in the matter, none of whom is eligible to participate in this Plan or any other stock option or other stock plan of the Company or any of
its affiliates, or has been eligible at any time within the preceding year. The requirements imposed by the preceding sentence shall also apply with respect to grants to officers who are also directors. Once appointed, such Committee shall continue
to serve until otherwise directed by the Board. 
  
 3. Eligible
Employees and Others. ISOs may be granted to any employee of the Company or any Related Corporation. Those officers and directors of the Company who are not employees may not be granted ISOs under the Plan. Non-Qualified Options, Awards and
authorizations to make Purchases may be granted to any director (whether or not an employee), officer, employee or consultant of the Company or any Related Corporation. The Committee may take into consideration recipient’s individual
circumstances in determining whether to grant an ISO, a Non-Qualified Option or an authorization to make a Purchase. The granting of any Stock Right to any individual or entity shall neither entitle that individual or entity to, nor disqualify him
from, participation in any other grant of Stock Rights. 
  
 4.
Stock. The stock subject to Options, Awards and Purchases shall be authorized but unissued shares of Common Stock of the Company, no par value per share (the “Common Stock”), or shares of Common Stock reacquired by the Company in any
manner. The aggregate number of shares which may be issued pursuant to the Plan is 40,000, subject to adjustment as provided in paragraph 13. Any such shares may be issued as ISOs, Non-Qualified Options or Awards, or to persons or entities making
Purchases, so long as the number of shares so issued does not exceed such number, as adjusted. If any Option granted under the Plan shall expire or terminate for any reason without having been exercised in full or shall cease for any reason to be
exercisable in whole or in part, or if the Company shall reacquire any vested shares issued pursuant to Awards or Purchases, the unpurchased shares subject to such Options and any unvested shares so reacquired by the Company shall again be available
for grants of Stock Rights under the Plan. 
  
 5. Granting of
Stock Rights. Stock Rights may be granted under the Plan at any time after July 15, 1994 and prior to July 15, 2004. The date of grant of a Stock Right under the Plan will be the date specified by the Committee at the time it grants the Stock Right;
provided, however, that such date shall not be prior to the date on which the Committee acts to approve the grant. The Committee shall have the right, with the consent of the optionee, to convert any ISO granted under the Plan to a Non-Qualified
Option pursuant to paragraph 16. 
  
 6. Minimum Option Price; ISO
Limitations. 
  
 A. The price per share specified in the agreement
relating to each Non-Qualified Option granted under the Plan shall in no event be less than the lesser of (i) the book value per share of Common Stock as of the end of the fiscal year of the Company 

  

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immediately preceding the date of such grant, or (ii) 50 percent of the fair market value per share of Common Stock on the date of such grant. 
  
 B. The price per share specified in the agreement relating to each ISO
granted under the Plan shall not be less than the fair market value per share of Common Stock on the date of such grant. In the case of an ISO to be granted to an employee owning stock possessing more than ten percent of the total combined voting
power of all classes of stock of the Company or any Related Corporation, the price per share specified in the agreement relating to such ISO shall not be less than 110 percent of the fair market value per share of Common Stock on the date of grant.

  
 C. In no event shall the aggregate fair market value
(determined at the time an ISO is granted) of Common Stock for which ISOs granted to any employee are exercisable for the first time by such employee during any calendar year (under all stock option plans of the Company and any Related Corporation)
exceed $160,000; provided that this paragraph 6(c) shall have no force or effect if its inclusion in the Plan is not necessary for options issued as ISOs to qualify as ISOs pursuant to Section 422A(d) of the Code. 
  
 D. If, at the time an Option is granted under the Plan, the Company’s
Common Stock is publicly traded, “fair market value” shall be determined as of the last business day for which the prices or quotes discussed in this sentence are available prior to the date such Option is granted and shall mean (i) the
average (on that date) of the high and low prices of the Common Stock on the principal national securities exchange on which the Common stock is traded, if the Common Stock is then traded on a national securities exchange; or (ii) the last reported
sale price (on that date) of the Common Stock on the NASDAQ National Market List, if the Common Stock is not then traded on a national securities exchange; or (iii) the closing bid price (or average of bid prices) last quoted (on that date) by an
established quotation service for over-the-counter securities, if the Common Stock is not reported on the NASDAQ National Market List. However, if the Common Stock is not publicly traded at the time an Option is granted under the Plan, “fair
market value” shall be deemed to be the fair value of the Common Stock as determined by the Committee after taking into consideration all factors which it deems appropriate, including, without limitation, recent sale and offer prices of the
Common Stock in private transactions negotiated at arm’s length. 
  
 7. Option Duration. Subject to earlier termination as provided in paragraphs 9 and 10, each option shall expire on the date specified by the Committee, but not more than (i) ten years from the date of grant in the case of Non-Qualified
Options, (ii) ten years from the date of grant in the case of ISOs generally, and (iii) five years from the date of grant in the case of ISOs granted to an employee owning stock possessing more than ten percent of the total combined voting power of
all classes of stock of the Company or any Related Corporation. Subject to earlier termination as provided in paragraphs 9 and 10, the term of each ISO shall be the term set forth in the original instrument granting such ISO, except with respect to
any part of such ISO that is converted into a Non-Qualified Option pursuant to paragraph 16. 
  

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 8. Exercise of Option. Subject to the provisions of paragraphs 9 through 12, each Option granted under
the Plan shall be exercisable as follows: 
  
 A. The Option shall
either be fully exercisable on the date of grant or shall become exercisable thereafter in such installments as the Committee may specify. 
  
 B. Once an installment becomes exercisable it shall remain exercisable until expiration or termination of the Option, unless otherwise specified by the
Committee. 
  
 C. Each Option or installment may be exercised at
any time or from time to time, in whole or in part, for up to the total number of shares with respect to which it is then exercisable. 
  
 D. The Committee shall have the right to accelerate the date of exercise of any installment of any Option; provided that the Committee shall not
accelerate the exercise date of any installment of any Option granted to any employee as an ISO (and not previously converted into a Non-Qualified Option pursuant to paragraph 16) if such acceleration would violate the annual vesting limitation
contained in Section 422A(d) of the Code, as described in paragraph 6(c). 
  
 9. Termination of Employment. If an ISO optionee ceases to be employed by the Company and all Related Corporations other than by reason of death or disability as defined in paragraph 10, no further installments of his
ISOs shall become exercisable, and his ISOs shall terminate after the passage of 60 days, from the date of termination of his employment, but in no event later than on their specified expiration dates, except to the extent that such ISOs (or
unexercised installments thereof) have been converted into Non-Qualified Options pursuant to paragraph 16. Employment shall be considered as continuing uninterrupted during any bona fide leave of absence (such as those attributable to illness,
military obligations or governmental service) provided that the period of such leave does not exceed 90 days or, if longer, any period during which such optionee’s right to reemployment is guaranteed by statute. A bona fide leave of absence
with the written approval of the Committee shall not be considered an interruption of employment under the Plan, provided that such written approval contractually obligates the Company or any Related Corporation to continue the employment of the
optionee after the approved period of absence. ISOs granted under the Plan shall not be affected by any change of employment within or among the Company and Related Corporations, so long as the optionee continues to be an employee of the Company or
any Related Corporation. Nothing in the Plan shall be deemed to give any grantee of any Stock Right the right to be retained in employment or other service by the Company or any Related Corporation for any period of time. 
  
 10. Death: Disability. 
  
 A. If an ISO optionee ceases to be employed by the Company and all Related
Corporations by reason of his death, any ISO of his may be exercised, to the extent of the 

  

 -5- 

 
number or shares with respect to which he could have exercised it on his death, by his estate, personal representative or beneficiary who has acquired the
ISO by will or by the laws of descent and distribution, at any time prior to the earlier of the ISO’s specified expiration date or 180 days from the date of the optionee’s death. 
  
 B. If an ISO optionee ceases to be employed by the Company and all Related
Corporations by reason of his disability, he shall have the right to exercise any ISO held by him on the date of termination of employment, to the extent of the number of shares with respect to which he could have exercised it on that date, at any
time prior to the earlier of the ISO’s specified expiration date or 180 days from the date of the termination of the optionee’s employment. For the purposes of the Plan, the term “disability” shall mean “permanent and total
disability” as defined in Section 22(e)(3) of the Code or successor statute. 
  
 11. Assignability. No Stock Right shall be assignable or transferable by the grantee except by will or by the laws of descent and distribution, and during the lifetime of the grantee each Stock Right shall be
exercisable only by him. 
  
 12. Terms and Conditions of Options.
Options shall be evidenced by instruments (which need not be identical) in such forms as the Committee may from time to time approve. Such instruments shall conform to the terms and conditions set forth in paragraphs 6 through 11 hereof and may
contain such other provisions as the Committee deems advisable which are not inconsistent with the Plan, including restrictions applicable to shares of Common Stock issuable upon exercise of Options. In granting any Non-Qualified Option, the
Committee may specify that such Non-Qualified Option shall be subject to the restrictions set forth herein with respect to ISOs, or to such other termination and cancellation provisions as the Committee may determine. The Committee may from time to
time confer authority and responsibility on one or more of its own members and/or one or more officers of the Company to execute and deliver such instruments. The proper officers of the Company are authorized and directed to take any and all action
necessary or advisable from time to time to carry out the terms of such instruments. 
  
 13. Adjustments. Upon the occurrence of any of the following events, an optionee’s rights with respect to Options granted to him hereunder shall be adjusted as hereinafter provided, unless otherwise specifically
provided in the written agreement between the optionee and the Company relating to such option: 
  
 A. If the shares of Common Stock shall be subdivided or combined into a greater or smaller number of shares or if the Company shall issue any shares of
Common Stock as a stock dividend on its outstanding Common Stock, the number of shares of Common Stock deliverable upon the exercise of Options shall be appropriately increased or decreased proportionately, and appropriate adjustments shall be made
in the purchase price per share to reflect such subdivision, combination or stock dividend. 
  

 -6- 

 B. Except as may otherwise be provided in the applicable option agreement, in the event of the sale of
all or substantially all of the assets of the Company, or the sale of all or substantially all of the capital stock of the Company, or a consolidation or merger in which stockholders of the Company immediately prior to such merger or consolidation
do not own, immediately following such merger or consolidation, voting securities sufficient to elect a majority of the members of the Board of Directors of the Company (assuming the participation of all voting securities in such election), or in
the event of the liquidation of the Company (each such event, a “Sale Event”): 
  
 (1). If the Sale Event is a consolidation or merger that qualifies as a pooling of interests under generally accepted accounting
principles, 50% of the unvested Options held by each optionee shall automatically accelerate and become exercisable immediately prior to the consummation of the Sale Event (the date of consummation of the Sale Event referred to herein as the
“Closing Date”), and the provisions of this Paragraph (1) shall apply. The Board of Directors shall provide written notice of such acceleration to the optionees within a reasonable period of time prior to the Closing Date. The Board of
Directors, or the board of directors of any corporation assuming the obligations of the Company, shall, in its discretion, take any one or more of the following actions, as to outstanding Options: (i) provide that all outstanding Options that are
not exercised prior to the Closing Date shall terminate as of the Closing Date; (ii) provide that all outstanding Options shall be assumed, or equivalent options shall be substituted, by the acquiring or succeeding corporation (or an affiliate
thereof), provided, however, that any such Options substituted for ISOs shall meet the requirements of Section 424(a) of the Code; (iii) terminate each outstanding option in exchange for a cash payment equal in amount to the product of the excess,
if any, of the fair market value of a share of Common Stock over the per-share exercise price of each such Option, times the number of shares subject to such Option. The Board shall determine the fair market value of a share of Common Stock for
purposes of the foregoing, and the Board’s determination of such fair market value shall be final, binding and conclusive. 
  
 (2). If the Sale Event is not a consolidation or merger that qualifies as a pooling of interests under generally accepted accounting
principles, the Board, or the board of directors of any corporation assuming the obligations of the Company, shall, in its discretion, take any one or more of the following actions, as to outstanding Options: (i) provide that all outstanding Options
shall be assumed, or equivalent options shall be substituted, by the acquiring or succeeding corporation (or an affiliate thereof), provided, however, that any such Options substituted for ISOs shall meet the requirements of Section 424(a) of the
Code; (ii) provide that such percentage of all unvested Options held by optionees as the Board of Directors determines shall accelerate and become exercisable immediately prior to the Closing Date by giving all optionees written notice of such
acceleration within a reasonable period of time prior to the Closing Date; (iii) provide that all outstanding Options that are not exercised prior to the Closing Date shall terminate as of the Closing Date; (iv) terminate each outstanding Option in
exchange for a cash payment equal in amount to the product of the excess, if any, of the fair market value of a share of Common Stock over the per-share exercise price of each such Option, times the number of shares subject to such Option. The Board
shall determine the fair 

  

 -7- 

 
market value of a share of Common Stock for purposes of the foregoing, and the Board’s determination of such fair market value shall be final, binding
and conclusive. 
  
 C. In the event of a recapitalization or
reorganization of the Company (other than a transaction described in subparagraph B above) pursuant to which securities of the Company or of another corporation are issued with respect to the outstanding shares of Common Stock, an optionee upon
exercising an Option shall be entitled to receive for the purchase price paid upon such exercise the securities he would have received if he had exercised his Option prior to such recapitalization or reorganization. 
  
 D. Notwithstanding the foregoing, any adjustments made pursuant to
subparagraphs A, B or C with respect to ISOs shall be made only after the Committee, after consulting with counsel for the Company, determines whether such adjustments would constitute a “modification” of such ISOs (as that term is defined
in Section 425 of the Code) or would cause any adverse tax consequences for the holders of such ISOs. If the Committee determines that such adjustments made with respect to ISOs would constitute a modification of such ISOs, it may refrain from
making such adjustments. 
  
 E. In the event of the proposed
dissolution or liquidation of the Company, each Option will terminate immediately prior to the consummation of such proposed action or at such other time and subject to such other conditions as shall be determined by the Committee. 
  
 F. 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 subject to Options. No adjustments shall be made for
dividends paid in cash or in property other than securities of the Company. 
  
 G. No fractional shares shall be issued under the Plan and the optionee shall receive from the Company cash in lieu of such fractional shares. 
  
 H. Upon the happening of any of the foregoing events described in subparagraphs A, B or C above, the class and aggregate
number of shares set forth in paragraph 4 hereof that are subject to Stock Rights which previously have been or subsequently may be granted under the Plan shall also be appropriately adjusted to reflect the events described in such subparagraphs.
The Committee or the Successor Board shall determine the specific adjustments to be made under this paragraph 13 and, subject to paragraph 2, its determination shall be conclusive. 
  
 If any person or entity owning restricted Common Stock obtained by exercise of a Stock Right made hereunder receives shares or securities or
cash in connection with a corporate transaction described in subparagraphs A, B or C above as a result of owning such restricted Common Stock, such shares or securities or cash shall be subject to all of the conditions and restrictions applicable to
the restricted Common Stock with respect to 

  

 -8- 

 
which such shares or securities or cash were issued, unless otherwise determined by the Committee or the Successor Board. 
  
 14. Means of Exercising Stock Rights. Stock Right (or any part or installment
thereof) shall be exercised by giving written notice to the Company at its principal office address. Such notice shall identify the Stock Right being exercised, and specify the number of shares as to which such Stock Right is being exercised,
accompanied by full payment of the purchase price therefor either (a) in United States dollars in cash or by check, or (b) at the discretion of the Committee, through delivery of shares of Common Stock having a fair market value equal as of the date
of the exercise to the cash exercise price of the Stock Right, or (c) at the discretion of the Committee, by delivery of the grantee’s personal recourse note bearing interest payable not less than annually at no less than 100% of the lowest
applicable Federal rate, as defined in Section 1274(d) of the Code, or (d) at the discretion of the Committee, by any combination of (a), (b) and (c) above. If the Committee exercises its discretion to permit payment of the exercise price of an ISO
by means of the methods set forth in clauses (b ), (c), or (d) of the preceding sentence, such discretion shall be exercised in writing at the time of the grant of the ISO in question. The holder of a Stock Right shall not have the rights of a
shareholder with respect to the shares covered by his Option until the date of issuance of a stock certificate to him for such shares. Except as expressly provided above in paragraph 13 with respect to changes in capitalization and stock dividends,
no adjustment shall be made for dividends or similar rights for which the record date is before the date such stock certificate is issued. 
  
 15. Terms and Amendment of Plan. This Plan was adopted by the Board on July 15, 1994, subject (with respect to the validation of ISO’s granted under
the Plan) to approval of the Plan by the stockholders of the Company at the next Meeting of Stockholders or, in lieu thereof, by written consent. If the approval of the stockholders is not obtained by July 15, 1995, any grants of ISOs under the Plan
made prior to that date will be rescinded. The Plan shall expire on July 15,2004 (except as to Options outstanding on that date). Subject to the provisions of paragraph 5 above, Stock Rights may be granted under the Plan prior to the date of
stockholder approval of the Plan. The Board may terminate or amend the Plan in any respect at any time, except that, without the approval of such stockholders obtained within 12 months before or after the Board adopts a resolution authorizing any of
the following actions: (a) the total number of shares that may be issued under the Plan may not be increased (except by adjustment pursuant to paragraph 13); (b) the provisions of paragraph 3 regarding eligibility for grants of ISOs may not be
modified; (c) the provisions of paragraph 6(B) regarding the exercise price at which shares may be offered pursuant to ISOs may not be modified (except by adjustment pursuant to paragraph 13); and (d) the expiration date of the Plan may not be
extended. Except as provided in the fourth sentence of this paragraph 15, in no event may action of the Board or stockholders alter or impair the rights of a grantee, without his consent, under any Stock Right previously granted to him. 

 
 16. Conversion of ISOs into Non-Qualified Options; Termination of ISOs.
The Committee, at the written request of any optionee, may in its discretion take such 

  

 -9- 

 
actions as may be necessary to convert such optionee’s ISOs for any installment or portions of installments thereof) that have not been exercised on the
date of conversion into Non-Qualified Options at any time prior to the expiration of such ISOs, regardless of whether the optionee is an employee of the Company or a Related Corporation at the time of such conversion. Such actions may include, but
are not limited to, extending the exercise period or reducing the exercise price of the appropriate installments of such Options. At the time of such conversion, the Committee (with the consent of the Optionee) may impose such conditions on the
exercise of the resulting Non-Qualified Options as the Committee in its discretion may determine, provided that such conditions shall not be inconsistent with this Plan. Nothing in the Plan shall be deemed to give any optionee the right to have such
optionee’s ISOs converted into Non-Qualified Options, and no such conversion shall occur until and unless the Committee takes appropriate action. The Committee, with the consent of the optionee, may also terminate any portion of any ISO that
has not been exercised at the time of such termination. 
  
 17.
Application of Funds. The proceeds received by the Company from the sale of shares pursuant to Options granted and Purchases authorized under the Plan shall be used for general corporate purposes. 
  
 18. Governmental Regulation. The Company’s obligation to sell and
deliver shares of the Common Stock under this Plan is subject to the approval of any governmental authority required in connection with the authorization, issuance or sale of such shares. 
  
 19. Withholding of Additional Income Taxes. Upon the exercise of a Non-Qualified Option, the grant of an Award, the making
of a Purchase of Common Stock for less than its fair market value, the making of a Disqualifying Disposition (as defined in paragraph 20) or the vesting of restricted Common Stock acquired on the exercise of a Stock Right hereunder, the Company, in
accordance with Section 3402(a) of the Code, may require the optionee, Award recipient or purchaser to pay additional withholding taxes in respect of the amount that is considered compensation includible in such person’s gross income. The
Committee in its discretion may condition (i) the exercise of an Option, (ii) the grant of an Award, (iii) the making of a Purchase of Common Stock for less than its fair market value, or (iv) the vesting of restricted Common Stock acquired by
exercising a Stock Right on the grantee’s payment of such additional withholding taxes. 
  
 20. Notice to Company of Disqualified Disposition. Each employee who receives an ISO must agree to notify the Company in writing immediately after the employee makes a Disqualifying Disposition of any Common Stock
acquired pursuant to the exercise of an ISO. A Disqualifying Disposition is any disposition (including any sale) of such Common Stock before the later of (a) two years after the date the employee was granted the ISO or (b) one year after the date
the employee acquired Common Stock by exercising the ISO. If the employee has died before such stock is sold, these holding period requirements do not apply and no Disqualifying Disposition can occur thereafter. 
  

 -10- 

 21. Governing Law; Construction. The validity and construction of the Plan and the instruments evidencing
Stock Rights shall be governed by the laws of The Commonwealth of Massachusetts. In construing this Plan, the singular shall include the plural and the masculine gender shall include the feminine and neuter, unless the context otherwise requires.

  

 -11-

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