Document:

1994 Employee Stock Purchase Plan

 EXHIBIT 10.4D 
  
 NPS PHARMACEUTICALS, INC. 
  
 1994 EMPLOYEE STOCK PURCHASE PLAN 
 (as Amended by the Board of Directors in June 2003 
 and adopted by the Shareholders in August 2003) 
  

	1.	PURPOSE. 

  
 1.1 The purpose of the Employee Stock Purchase Plan (the “Plan”) is to provide a means by which employees of NPS Pharmaceuticals, Inc., a
Delaware corporation (the “Company”), and its Affiliates, as defined in subparagraph 1.2, which are designated as provided in subparagraph 2.2, may be given an opportunity to purchase stock of the Company. 
  
 1.2 The word “Affiliate” as used in the Plan means any parent
corporation or subsidiary corporation of the Company, as those terms are defined in Sections 424(e) and (f), respectively, of the Internal Revenue Code of 1986, as amended (the “Code”). 
  
 1.3 The Company, by means of the Plan, seeks to retain the services of its
employees, to secure and retain the services of new employees, and to provide incentives for such persons to exert maximum efforts for the success of the Company. 
  
 1.4 The Company intends that the rights to purchase stock of the Company granted under the Plan be considered options issued
under an “employee stock purchase plan” as that term is defined in Section 423(b) of the Code. 
  

	2.	ADMINISTRATION. 

  
 2.1 The Plan shall be administered by the Board of Directors (the “Board”) of the Company unless and until the Board delegates administration to
a Committee, as provided in subparagraph 2.3. Whether or not the Board has delegated administration, the Board shall have the final power to determine all questions of policy and expediency that may arise in the administration of the Plan.

  
 2.2 The Board shall have the power, subject to, and within the
limitations of, the express provisions of the Plan: 
  
 2.2.1 To determine when and how rights to purchase stock of the Company shall be granted and the provisions of each offering of such rights (which need not be identical). 
  
 2.2.2 To designate from time to time which Affiliates of the Company shall be eligible to participate in the
Plan. 
  
 2.2.3 To construe and interpret the
Plan and rights granted under it, and to establish, amend and revoke rules and regulations for its administration. The Board, in the exercise of this power, may correct any defect, omission or inconsistency in the Plan, in a manner and to the extent
it shall deem necessary or expedient to make the Plan fully effective. 
  
 2.2.4 To amend the Plan as provided in paragraph 13. 
  
 2.2.5 Generally, to exercise such powers and to perform such acts as the Board deems necessary or expedient to promote the best interests
of the Company. 
  
 2.3 The Board may delegate administration of
the Plan to a Committee composed of not fewer than two (2) members of the Board (the “Committee”). If administration is delegated to a Committee, the Committee shall have, in connection with the administration of the Plan, the powers
theretofore possessed by the Board, subject, however, to such resolutions, not inconsistent with the provisions of the Plan, as may be adopted from time to time by the Board. The Board may abolish the Committee at any time and revest in the Board
the administration of the Plan. 
  

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	3.	SHARES SUBJECT TO THE PLAN. 

  
 3.1 Subject to the provisions of paragraph 12 relating to adjustments upon changes in stock, the stock that may be sold
pursuant to rights granted under the Plan shall not exceed in the aggregate three hundred thirty five thousand (335,000) shares of the Company’s common stock (the “Common Stock”). If any right granted under the Plan shall for any
reason terminate without having been exercised, the Common Stock not purchased under such right shall again become available for the Plan. 
  
 3.2 The stock subject to the Plan may be unissued shares or reacquired shares, bought on the market or otherwise. 
  

	4.	GRANT OF RIGHTS; OFFERING. 

  
 The Board or the Committee may from time to time grant or provide for the grant of rights to purchase Common Stock of the
Company under the Plan to eligible employees (an “Offering”) on a date or dates (the “Offering Date(s)”) selected by the Board or the Committee. Each Offering shall be in such form and shall contain such terms and conditions as
the Board or the Committee shall deem appropriate. If an employee has more than one right outstanding under the Plan, unless he or she otherwise indicates in agreements or notices delivered hereunder: (a) each agreement or notice delivered by that
employee will be deemed to apply to all of his or her rights under the Plan, and (b) a right with a lower exercise price (or an earlier-granted right, if two rights have identical exercise prices), will be exercised to the fullest possible extent
before a right with a higher exercise price (or a later-granted right, if two rights have identical exercise prices) will be exercised. The provisions of separate Offerings need not be identical, but each Offering shall include (through
incorporation of the provisions of this Plan by reference in the Offering or otherwise) the substance of the provisions contained in paragraphs 5 through 8, inclusive. 
  

	5.	ELIGIBILITY. 

  
 5.1 Rights may be granted only to employees of the Company or, as the Board or the Committee may designate as provided in subparagraph 2.2, to employees
of any Affiliate of the Company. Except as provided in subparagraph 5.2, an employee of the Company or any Affiliate shall not be eligible to be granted rights under the Plan, unless, on the Offering Date, such employee has been in the employ of the
Company or any Affiliate for such continuous period preceding such grant as the Board or the Committee may require, but in no event shall the required period of continuous employment be equal to or greater than two (2) years. In addition, unless
otherwise determined by the Board or the Committee and set forth in the terms of the applicable Offering, no employee of the Company or any Affiliate shall be eligible to be granted rights under the Plan, unless, on the Offering Date, such
employee’s customary employment with the Company or such Affiliate is at least twenty (20) hours per week and at least five (5) months per calendar year. 
  

5.2 The Board or the Committee may provide that, each person who, during the course of an Offering, first becomes an eligible employee of the Company
or designated Affiliate will, on a date or dates specified in the Offering which coincides with the day on which such person becomes an eligible employee or occurs thereafter, receive a right under that Offering, which right shall thereafter be
deemed to be a part of that Offering. Such right shall have the same characteristics as any rights originally granted under that Offering, as described herein, except that: 
  
 5.2.1 the date on which such right is granted shall be the “Offering Date” of such right for all
purposes, including determination of the purchase price of such right; 
  
 5.2.2 the Offering Period (as defined below) for such right shall begin on its Offering Date and end coincident with the end of such Offering; and 
  
 5.2.3 the Board or the Committee may provide that if such person first becomes an eligible employee within a
specified period of time before the end of the Offering Period (as defined below) for such Offering, he or she will not receive any right under that Offering. 
  

5.3 No employee shall be eligible for the grant of any rights under the Plan if, immediately after any such rights are granted, such employee owns
stock possessing five percent (5%) or more of the total combined voting 
  

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 power or value of all classes of stock of the Company or of any Affiliate. For purposes of this subparagraph 5.3, the
rules of Section 424(d) of the Code shall apply in determining the stock ownership of any employee, and stock which such employee may purchase under all outstanding rights and options shall be treated as stock owned by such employee. 
  
 5.4 An eligible employee may be granted rights under the Plan only if such
rights, together with any other rights granted under “employee stock purchase plans” of the Company and any Affiliates, as specified by Section 423(b)(8) of the Code, do not permit such employee’s rights to purchase stock of the
Company or any Affiliate to accrue at a rate which exceeds twenty-five thousand dollars ($25,000) of fair market value of such stock (determined at the time such rights are granted) for each calendar year in which such rights are outstanding at any
time. 
  
 5.5 Officers of the Company and any designated Affiliate
shall be eligible to participate in Offerings under the Plan, provided, however, that the Board may provide in an Offering that certain employees who are highly compensated employees within the meaning of Section 423(b)(4)(D) of the Code shall not
be eligible to participate. 
  

	6.	RIGHTS; PURCHASE PRICE. 

  
 6.1 On each Offering Date, each eligible employee, pursuant to an Offering made under the Plan, shall be granted the right to purchase up to the number of
shares of Common Stock of the Company purchasable with a percentage designated by the Board or the Committee not exceeding fifteen percent (15%) of such employee’s Earnings (as defined in Section 7(a)) during the period which begins on the
Offering Date (or such later date as the Board or the Committee determines for a particular Offering) and ends on the date stated in the Offering, which date shall be no more than twenty-seven (27) months after the Offering Date (the “Offering
Period”). In connection with each Offering made under this Plan, the Board or the Committee shall specify a maximum number of shares which may be purchased by any employee as well as a maximum aggregate number of shares which may be purchased
by all eligible employees pursuant to such Offering. In addition, in connection with each Offering which contains more than one Purchase Date and a corresponding Purchase Period (as defined in the Offering), the Board or the Committee may specify a
maximum aggregate number of shares which may be purchased by all eligible employees on any given Purchase Date under the Offering. If the aggregate purchase of shares upon exercise of rights granted under the Offering would exceed any such maximum
aggregate number, the Board or the Committee shall make a pro rata allocation of the shares available in as nearly a uniform manner as shall be practicable and as it shall deem to be equitable. 
  
 6.2 The purchase price of stock acquired pursuant to rights granted under the
Plan shall be not less than the lesser of: 
  
 6.2.1 an amount equal to eighty-five percent (85%) of the fair market value of the stock on the Offering Date; or 
  
 6.2.2 an amount equal to eighty-five percent (85%) of the fair market value of the stock on the Purchase Date. 
  
 6.3 In the event that the fair market value of the shares on a Purchase Date
of an Offering Period is less than the fair market value of the shares on the Offering Date for such Offering Period, then every participant shall automatically (a) be withdrawn from such Purchase Period at the close of such Purchase Date (after the
acquisition of shares for such Purchase Period), and (b) be re-enrolled on the first business day subsequent to such Purchase Date with such date now constituting the “Offering Date” for all purposes, including determination of the
Purchase Price of such right. 
  

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	7.	PARTICIPATION; WITHDRAWAL; TERMINATION. 

  
 7.1 An eligible employee may become a participant in an Offering by delivering a participation agreement to the Company
within the time specified in the Offering, in such form as the Company provides. Each such agreement shall authorize payroll deductions of up to the maximum percentage specified by the Board or the Committee of such employee’s Earnings during
the Offering Period. “Earnings” is defined as the total compensation paid to an employee, including all salary, wages (including amounts elected to be deferred by the employee, that would otherwise have been paid, under any cash or
deferred arrangement established by the Company), overtime pay, commissions, bonuses, and other remuneration paid directly to the employee, but excluding profit sharing, the cost of employee benefits paid for by the Company, education or tuition
reimbursements, imputed income arising under any Company group insurance or benefit program, traveling expenses, business and moving expense reimbursements, income received in connection with stock options, contributions made by the Company under
any employee benefit plan, and similar items of compensation. The payroll deductions made for each participant shall be credited to an account for such participant under the Plan and shall be deposited with the general funds of the Company. A
participant may reduce (including to zero), increase or begin such payroll deductions after the beginning of any Purchase Period only as provided for in the Offering. A participant may make additional payments into his or her account only if
specifically provided for in the Offering and only if the participant has not had the maximum amount withheld during the Purchase Period. 
  
 7.2 At any time during an Offering Period a participant may terminate his or her payroll deductions under the Plan and withdraw from the Offering by
delivering to the Company a notice of withdrawal in such form as the Company provides. Such withdrawal may be elected at any time prior to the end of the Offering Period except as provided by the Board or the Committee in the Offering. Upon such
withdrawal from the Offering by a participant, the Company shall distribute to such participant all of his or her accumulated payroll deductions (reduced to the extent, if any, such deductions have been used to acquire stock for the participant)
under the Offering, without interest, and such participant’s interest in that Offering shall be automatically terminated. A participant’s withdrawal from an Offering will have no effect upon such participant’s eligibility to
participate in any other Offerings under the Plan but such participant will be required to deliver a new participation agreement in order to participate in subsequent Offerings under the Plan. 
  
 7.3 Rights granted pursuant to any Offering under the Plan shall terminate
immediately upon cessation of any participating employee’s employment with the Company and any designated Affiliate, for any reason, and the Company shall distribute to such terminated employee all of his or her accumulated payroll deductions
(reduced to the extent, if any, such deductions have been used to acquire stock for the terminated employee), under the Offering, without interest. 
  
 7.4 Rights granted under the Plan shall not be transferable, and, except as provided in Section 14, shall be exercisable only by the person to whom such
rights are granted. 
  

	8.	EXERCISE. 

  
 8.1 On each purchase date, as defined in the relevant Offering (a “Purchase Date”), each participant’s accumulated payroll deductions and
other additional payments specifically provided for in the Offering (without any increase for interest) will be applied to the purchase of whole shares of stock of the Company, up to the maximum number of shares permitted pursuant to the terms of
the Plan and the applicable Offering, at the purchase price specified in the Offering. No fractional shares shall be issued upon the exercise of rights granted under the Plan. The amount, if any, of accumulated payroll deductions remaining in each
participant’s account after the purchase of shares which is less than the amount required to purchase one share of stock on the final Purchase Date of an Offering shall be held in each such participant’s account for the purchase of shares
under the next Offering under the Plan, unless such participant withdraws from such next Offering, as provided in subparagraph 7.2, or is no longer eligible to be granted rights under the Plan, as provided in paragraph 5, in which case such amount
shall be distributed to the participant after said final Purchase Date of the Offering, without interest. The amount, if any, of accumulated payroll deductions remaining in any participant’s account after the purchase of shares which is equal
to the amount required to purchase whole shares of stock on the final Purchase Date of an Offering shall be distributed in full to the participant after such Purchase Date, without interest. 
  
 8.2 No rights granted under the Plan may be exercised to any extent unless
the Plan (including rights granted thereunder) is covered by an effective registration statement pursuant to the Securities Act of 1933, as 
  

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 amended (the “Securities Act”). If on a Purchase Date of any Offering hereunder the Plan is not so registered,
no rights granted under the Plan or any Offering shall be exercised on said Purchase Date and the Purchase Date shall be delayed until the Plan is subject to such an effective registration statement, except that the Purchase Date shall not be
delayed more than two (2) months and the Purchase Date shall in no event be more than twenty-seven (27) months from the Offering Date. If on the Purchase Date of any Offering hereunder, as delayed to the maximum extent permissible, the Plan is not
registered, no rights granted under the Plan or any Offering shall be exercised and all payroll deductions accumulated during the Offering Period (reduced to the extent, if any, such deductions have been used to acquire stock) shall be distributed
to the participants, without interest. 
  

	9.	COVENANTS OF THE COMPANY. 

  
 9.1 During the terms of the rights granted under the Plan, the Company shall keep available at all times the number of
shares of stock required to satisfy such rights. 
  
 9.2 The
Company shall seek to obtain from each regulatory commission or agency having jurisdiction over the Plan such authority as may be required to issue and sell shares of stock upon exercise of the rights granted under the Plan. If, after reasonable
efforts, the Company is unable to obtain from any such regulatory commission or agency the authority which counsel for the Company deems necessary for the lawful issuance and sale of stock under the Plan, the Company shall be relieved from any
liability for failure to issue and sell stock upon exercise of such rights unless and until such authority is obtained. 
  

	10.	USE OF PROCEEDS FROM STOCK. 

  
 Proceeds from the sale of stock pursuant to rights granted under the Plan shall constitute general funds of the Company.

  

	11.	RIGHTS AS A STOCKHOLDER. 

  
 A participant shall not be deemed to be the holder of, or to have any of the rights of a holder with respect to, any shares subject to rights granted
under the Plan unless and until the participant’s shareholdings acquired upon exercise of rights hereunder are recorded in the books of the Company. 
  

	12.	ADJUSTMENTS UPON CHANGES IN STOCK. 

  
 12.1 If any change is made in the stock subject to the Plan, or subject to
any rights granted under the Plan (through merger, consolidation, reorganization, recapitalization, stock dividend, dividend in property other than cash, stock split, liquidating dividend, combination of shares, exchange of shares, change in
corporate structure or otherwise), the Plan and outstanding rights will be appropriately adjusted in the class(es) and maximum number of shares subject to the Plan and the class(es) and number of shares and price per share of stock subject to
outstanding rights. 
  
 12.2 In the event of: (a) a dissolution or
liquidation of the Company; (b) a merger or consolidation in which the Company is not the surviving corporation; (c) a reverse merger in which the Company is the surviving corporation but the shares of the Company’s Common Stock outstanding
immediately preceding the merger are converted by virtue of the merger into other property, whether in the form of securities, cash or otherwise; (d) a strategic corporate event, such as a merger or acquisition, where the Company is technically the
surviving entity, but where other elements of a change of control are present, i.e. change in management team or board composition; (e) a transaction which the Board determines in its sole discretion to constitute a change in control of the Company;
or (f) any other capital reorganization in which more than fifty percent (50%) of the shares of the Company entitled to vote are exchanged, then, as determined by the Board in its sole discretion (i) any surviving corporation may assume outstanding
rights or substitute similar rights for those under the Plan, (ii) such rights may continue in full force and effect, or (iii) participants’ accumulated payroll deductions may be used to purchase Common Stock immediately prior to the
transaction described above and the participants’ rights under the ongoing Offering terminated. 
  

	13.	AMENDMENT OF THE PLAN. 

  
 13.1 The Board at any time, and from time to time, may amend the Plan. However, except as provided in paragraph 12 relating
to adjustments upon changes in stock, no amendment shall be effective unless approved by 
  

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 the stockholders of the Company within twelve (12) months before or after the adoption of the amendment, where the
amendment will: 
  
 13.1.1 Increase the number of
shares reserved for rights under the Plan; 
  
 13.1.2 Modify the provisions as to eligibility for participation in the Plan (to the extent such modification requires stockholder approval in order for the Plan to obtain employee stock purchase plan treatment under Section 423 of the Code
or to comply with the requirements of Rule 16b-3 promulgated under the Securities Exchange Act of 1934, as amended (“Rule 16b-3”)); or 
  
 13.1.3 Modify the Plan in any other way if such modification requires stockholder approval in order for the Plan to obtain employee stock
purchase plan treatment under Section 423 of the Code or to comply with the requirements of Rule 16b-3. 
  
 It is expressly contemplated that the Board may amend the Plan in any respect the Board deems necessary or advisable to provide eligible employees with the maximum benefits provided or to be provided under the
provisions of the Code and the regulations promulgated thereunder relating to employee stock purchase plans and/or to bring the Plan and/or rights granted under it into compliance therewith. 
  
 13.2 Rights and obligations under any rights granted before amendment of the
Plan shall not be altered or impaired by any amendment of the Plan, except with the consent of the person to whom such rights were granted or except as necessary to comply with any laws or governmental regulation. 
  

	14.	DESIGNATION OF BENEFICIARY. 

  
 14.1 A participant may file a written designation of a beneficiary who is to receive any shares and cash, if any, from the participant’s account
under the Plan in the event of such participant’s death subsequent to the end of an Offering but prior to delivery to him of such shares and cash. In addition, a participant may file a written designation of a beneficiary who is to receive any
cash from the participant’s account under the Plan in the event of such participant’s death during an Offering Period. 
  
 14.2 Such designation of beneficiary may be changed by the participant at any time by written notice. In the event of the death of a participant and in
the absence of a beneficiary validly designated under the Plan who is living at the time of such participant’s death, the Company shall deliver such shares and/or cash to the executor or administrator of the estate of the participant, or if no
such executor or administrator has been appointed (to the knowledge of the Company, the Company, in its discretion, may deliver such shares and/or cash to the spouse or to any one or more dependents or relatives of the participant, or if no spouse,
dependent or relative is known to the Company, then to such other person as the Company may designate. 
  

	15.	TERMINATION OR SUSPENSION OF THE PLAN. 

  
 15.1 The Board may suspend or terminate the Plan at any time. Unless sooner
terminated, the Plan shall terminate on midnight, January 6, 2009. No rights may be granted under the Plan while the Plan is suspended or after it is terminated. 
  
 15.2 Rights and obligations under any rights granted while the Plan is in effect shall not be altered or impaired by
suspension or termination of the Plan, except with the consent of the person to whom such rights were granted or except as necessary to comply with any laws or governmental regulation. 
  

	16.	EFFECTIVE DATE OF PLAN. 

  
 The Plan shall become effective as determined by the Board, but no rights granted under the Plan shall be exercised unless
and until the Plan has been approved by the stockholders of the Company. 
  

 61998 Stock Option Plan

 EXHIBIT 10.5C 
  
 NPS PHARMACEUTICALS, INC. 
  
 1998 STOCK OPTION PLAN 
 (reflects all amendments by the Board of Directors through June 2003) 
  

	1.	GENERAL. 

  

	 	1.1	Purpose. The 1998 Stock Option Plan has been established by the Company to provide a means by which employees, directors, and consultants of the Company and its Affiliates
may be given the opportunity to benefit from increases in value of NPS stock through the granting of Options. NPS seeks to (a) retain the services of present employees, directors, and consultants; (b) secure and retain the services of new employees,
directors, and consultants; and (c) provide incentives for such persons to exert maximum efforts for the success of the Company and thereby promote the long-term interest of the Company, including the growth in value of the Company’s equity and
enhancement of long-term stockholder return. 

  

	 	1.2	Types of Options. The Company intends that the Options issued under the Plan shall, in the discretion of the Board or any Board Committee (see paragraph 3.2), be either
Incentive Stock Options or Nonstatutory Stock Options (defined below). 

  

	 	1.3	Definitions. Unless otherwise defined, capitalized terms shall have the meaning set forth in Section 2. 

  

	2.	DEFINITIONS. 

  

	 	2.1	Affiliate means any parent corporation or subsidiary corporation of the Company, whether now or hereafter existing, as those terms are defined in Sections 424(e) and (f)
respectively, of the Code. 

  

	 	2.2	Board means the Board of Directors of the Company. 

  

	 	2.3	Code means the Internal Revenue Code of 1986, as amended. 

  

	 	2.4	Committee means a Committee appointed by the Board in accordance with paragraph 3.2 herein. 

  

	 	2.5	Company means NPS Pharmaceuticals, Inc., a Delaware corporation. 

  

	 	2.6	Consultant means any person (including an advisor) engaged by the Company or an Affiliate to render consulting services under arrangements intended to compensate such person
for such services. The term “Consultant” shall not include a Director who is paid only a director’s fee by the Company or who is not compensated by the Company for services as a Director. 

  

	 	2.7	Continuous Status as an Employee, Director, or Consultant means the employment or relationship as an Employee, Director, or Consultant is not interrupted or terminated by the
Company or any Affiliate. The Board, in its sole discretion, may determine whether Continuous Status as an Employee, Director, or Consultant shall be considered interrupted in the case of: 

  

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	 	2.7.1	any leave of absence approved by the Board, including sick leave, military leave, or any other personal leave; provided, however, that for purposes of Incentive Stock Options, any
such leave may not exceed 90 days unless reemployment upon the expiration of such leave is guaranteed by contract (including certain Company policies) or statute; or 

  

	 	2.7.2	transfers between locations of the Company or between the Company, Affiliates or its successor. 

  

	 	2.8	Day of Determination means the date of the occurrence of an event that requires the determination of the Fair Market Value of an award made hereunder.

  

	 	2.9	Director means a member of the Board. 

  

	 	2.10	Disability means total and permanent disability as defined in Section 22(e)(3) of the Code. 

  

	 	2.11	Employee means any person, including Officers and Directors, employed by the Company or any Affiliate. Neither service as a Director nor payment of a director’s fee by
the Company shall be sufficient to constitute “employment” by the Company. 

  

	 	2.12	Exchange Act means the Securities Exchange Act of 1934, as amended. 

  

	 	2.13	Fair Market Value means, as of any date, the value of the common stock of the Company as determined as follows: 

  

	 	2.13.1	If the common stock is listed on any established stock exchange or a national market system, including without limitation, the National Market System of the National Association of
Securities Dealers, Inc. Automated Quotation (“Nasdaq”) System, the Fair Market Value of a share of common stock shall be the closing price for such stock on the Day of Determination as quoted on such system as reported in the Wall Street
Journal or such other source as the Board deems reliable. In the event the Day of Determination falls on a date that the Nasdaq system is closed, then the Fair Market Value shall be the closing sales price for such stock on the last market trading
day prior to the Day of Determination as quoted on such system as reported in the Wall Street Journal or such other source as the Board deems reliable. 

  

	 	2.13.2	If the common stock is quoted on Nasdaq (but not on the National Market System thereof) or is regularly quoted by a recognized securities dealer but selling prices are not reported,
the Fair Market Value of a share of common stock shall be the mean between the bid and asked prices for the common stock on the last market trading day prior to the day of determination, as reported in the Wall Street Journal or such other source as
the Board deems reliable; 

  

	 	2.13.3	In the absence of an established market for the common stock, the Fair Market Value shall be determined in good faith by the Board. 

  

	 	2.14	Incentive Stock Option (or “ISO”) means an Option intended to qualify as an incentive stock option within the meaning of Section 422 of the Code and the regulations
promulgated thereunder. 

  

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	 	2.15	Non-Employee Director means a Director who is considered to be a “Non-Employee Director” in accordance with Rule 16b-3(b)(3), or any other applicable rules,
regulations or interpretations of the Securities and Exchange Commission. 

  

	 	2.16	Nonstatutory Stock Option (or “NSO”) means an Option not intended to qualify or not eligible to qualify as an ISO or an ISO which, subsequent to its date of grant,
no longer qualifies as an ISO under Section 422 of the Code. 

  

	 	2.17	Officer means a person who is an officer of the Company within the meaning of Section 16a-1(f) of the Exchange Act and the rules and regulations promulgated thereunder.

  

	 	2.18	Option means a stock option granted pursuant to the Plan. 

  

	 	2.19	Option Agreement means a written agreement between the Company and an Optionee evidencing the terms and conditions of an individual Option grant. 

  

	 	2.20	Optionee means an Employee, Director, or Consultant who holds an outstanding Option. 

  

	 	2.21	Outside Director means a Director who is considered to be an “Outside Director” in accordance with Section 162(m) of the Code, or any other applicable Code
sections, regulations, or interpretations of the IRS. 

  

	 	2.22	Plan means this 1998 Stock Option Plan. 

  

	 	2.23	Rule 16b-3 means Rule 16b-3 of the Exchange Act or any successor to Rule 16b-3, as in effect when discretion is being exercised with respect to the Plan.

  

	 	2.24	Securities Act means the Securities Act of 1933, as amended. 

  

	3.	ADMINISTRATION. 

  

	 	3.1	Powers and Authority. The Plan shall be administered by or under the direction of the Board unless and until the Board delegates administration to a Committee, as provided in
paragraph 3.2. The Board shall have the power subject to and within the limitations of the express provisions of the Plan: 

  

	 	3.1.1	To determine from time to time: (a) which of the persons eligible under the Plan shall be granted Options; (b) when and how Options shall be granted; (c) whether an Option shall be
intended to qualify as an ISO; (d) the provisions of each Option granted (which need not be identical) including the time or times when a person shall be permitted to receive stock pursuant to the exercise of such Option; (e) whether a person shall
be permitted to exercise such Option; and (f) the number of shares with respect to which Options shall be granted to each such person. 

  

	 	3.1.2	To construe and interpret the Plan and Options granted under it, and to establish, amend, and revoke rules and regulations for its administration. The Board, in the exercise of this
power, may correct any defect, omission, or inconsistency in the Plan or in any Option Agreement, in a manner and to the extent it shall deem necessary or expedient to make the Plan fully effective. 

  

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	 	3.1.3	To amend the Plan as provided in Section 12. 

  

	 	3.1.4	Generally, to exercise such powers and to perform such acts as the Board deems necessary or expedient to promote the best interests of the Company. 

  

	 	3.2	Delegation. The Board may delegate administration of the Plan to a Board committee composed of not fewer than two members (the “Committee”). All members of the
Committee shall be Outside Directors or Non-Employee Directors, to the extent necessary to comply with the applicable provisions of Rule 16b-3 and Section 162(m). If administration is delegated to a Committee, the Committee shall have, in connection
with the administration of the Plan, the powers theretofore possessed by the Board (and references in this Plan to the Board shall in such event, be to the Committee), subject, however, to such resolutions, not inconsistent with the provisions of
the Plan, as may be adopted from time to time by the Board. The Board may abolish the Committee at any time and revest in the Board the administration of the Plan. 

  

	 	3.3	Director Status. Any requirement that an administrator of the Plan be a Non-Employee Director or an Outside Director shall not apply if the Board or the Committee expressly
declares that such requirement shall not apply. 

  

	4.	SHARES SUBJECT TO THE PLAN. 

  

	 	4.1	Available Shares. Subject to the provisions of Section 11, the number of shares that may be issued pursuant to Options granted hereunder shall not exceed in the aggregate six
million five hundred thousand (6,500,000) shares of the Company’s common stock. 

  

	 	4.2	Forfeited or Canceled Shares. Any shares of stock for which an Option has been granted under the Plan that are forfeited because of the failure to meet an Option grant
contingency or condition shall again be available for delivery pursuant to new grants under the Plan. To the extent any shares of stock covered by an Option are not delivered to an Optionee or beneficiary because the award is forfeited or canceled,
or the shares of stock are not delivered because the award is settled in cash, such shares shall not be deemed to have been delivered for purposes of determining the maximum number of shares of stock available for delivery under the Plan.

  

	 	4.3	Payment with Shares. If the exercise price of any Option granted under the Plan is satisfied by tendering shares of stock to the Company (by either actual delivery or by
attestation), only the number of shares of stock issued net of the shares of stock tendered shall be deemed delivered for purposes of determining the maximum number of shares of stock available for delivery under the Plan. 

 

	 	4.4	Plan Limits. Shares of stock delivered under the Plan in settlement, assumption, or substitution of outstanding awards (or obligations to grant future awards) under the plans
or arrangements of another entity shall not reduce the maximum number of shares of stock available for delivery under the Plan, to the extent that such settlement, assumption, or substitution is a result of the Company or Affiliate acquiring another
entity (or an interest in another entity). Subject to the provisions of Section 11, the maximum number of shares that may be covered by grants to any one individual shall be 750,000 shares during any three consecutive calendar years.

  

 4 

 5. ELIGIBILITY. 
  

	 	5.1	Option Type. ISOs may be granted only to Employees. NSOs may be granted to Employees, Directors, or Consultants. 

  

	 	5.2	Section 16 Compliance. No Officer or Director shall be eligible for the benefits of the Plan unless at the time discretion is exercised in the selection of an Officer or
Director as a person to whom Options may be granted, or in the determination of the number of shares which may be covered by Options granted to the Officer or Director, the Plan otherwise complies with the requirements of Rule 16b-3. This paragraph
5.2 shall not apply if the Board or Committee expressly declares that it shall not apply. 

  

	6.	OPTION PROVISIONS. Each Option shall be in such form and shall contain such terms and conditions as the Board shall deem appropriate. The provisions of
separate Options need not be identical, but each Option shall include (through incorporation of provisions hereof by reference in the Option or otherwise) the substance of each of the following provisions: 

  

	 	6.1	Term. No Option shall be exercisable after the expiration of ten years from the date it was granted. 

  

	 	6.2	Price. The exercise price of each Option shall be not less than 100% of the Fair Market Value of the stock subject to the Option on the date the Option is granted.

  

	 	6.3	Consideration. The purchase price of stock acquired pursuant to an Option shall be paid, to the extent permitted by applicable statutes and regulations:

  

	 	6.3.1	in cash; or 

  

	 	6.3.2	by delivery of already-owned shares of common stock of the Company, held by the Optionee for at least six months, or a combination of cash and already-owned shares of common stock
of the Company; or 

  

	 	6.3.3	according to a deferred payment or other arrangement (which may include, without limiting the generality of the foregoing, the use of other common stock of the Company) with the
person to whom the Option is granted or to whom the Option is transferred pursuant to paragraph 6.4; or 

  

	 	6.3.4	pursuant to a broker assisted exercise same-day sales program; or 

  

	 	6.3.5	as required in the discretion of the Board or the Committee, either at the time of the grant or exercise of the Option; or 

  

	 	6.3.6	any combination of 6.3.1 through 6.3.5 above. 

  

	 	    	In the case of any deferred payment arrangement, interest shall be payable at least annually and shall be charged at the minimum rate of interest necessary to avoid the treatment as
interest, under any applicable provisions of the Code, of any amounts other than amounts stated to be interest under the deferred payment arrangement. 

  

 5 

	 	6.4	Transferability. 

  

	 	6.4.1	Incentive Stock Options. In order for an Option to qualify for treatment as an ISO, it may not be transferable except by will or by the laws of descent and distribution. In
the event an Optionee transfers such Option, such transfer shall constitute a disqualifying event and the Option shall no longer qualify as an ISO but shall be considered a NSO under the terms of this Plan. 

  

	 	6.4.2	Nonstatutory Stock Option. The Board or Committee may, in its discretion, authorize all or a portion of the NSOs to be granted to an Optionee to be on terms that permit
transfer by such Optionee to (a) the spouse, children, or grandchildren of the Optionee (“Immediate Family Members”), (b) a trust or trusts for the exclusive benefit of such Immediate Family Members, or (c) a partnership in which such
Immediate Family Members are the only partners, provided that (i) there may be no consideration for any such transfer, (ii) the Option Agreement pursuant to which such Options are granted must expressly provide for transferability in a manner
consistent with this Section, (iii) subsequent transfers of transferred Options shall be prohibited except those occurring by will or the laws of descent and distribution, and (iv) the Options shall continue to be subject to all the terms and
conditions that applied prior to transfer in the same manner and to the same extent as non-transferred Options, including paragraphs 6.5 through 6.9. The Options shall be exercisable by the transferee only to the extent, and for the periods
specified in such sections. The Company expressly disclaims any obligation to provide notice to a transferee of the termination of the Option. 

  

	 	6.4.3	Unless transfer by an Optionee is specifically provided for in an Option Agreement, a NSO shall not be transferable except by will or by the laws of descent and distribution or
pursuant to a qualified domestic relations order as defined by the Code or Title I of the Employee Retirement Income Security Act, or the rules thereunder (a “QDRO”), and shall be exercisable during the lifetime of the person to whom the
NSO is granted only by such person or any transferee pursuant to a QDRO. 

  

	 	6.5	Vesting. The total number of shares of stock subject to an Option may, but need not, be allotted in periodic installments (which may, but need not, be equal). The Option
Agreement may provide that from time to time during each of such installment periods, the Option may become exercisable (“vest”) with respect to some or all of the shares allotted to that period, and may be exercised with respect to some
or all of the shares allotted to such period and/or any prior period as to which the Option became vested but was not fully exercised. The Option may be subject to such other terms and conditions on the time or times when it may be exercised (which
may be based on performance criteria) as the Board may deem appropriate. The provisions of this paragraph 6.5 are subject to any Option provisions governing the minimum number of shares as to which an Option may be exercised.

  

	 	6.6	Securities Law Compliance. The Company may require any Optionee, or any person to whom an Option is transferred under paragraph 6.4, as a condition of exercising any such
Option, (a) to give written assurances satisfactory to the Company as to the Optionee’s knowledge and experience in financial and business matters and/or to employ a purchaser representative reasonably satisfactory to the Company who is
knowledgeable and experienced in financial and business matters, and that he or she is capable of evaluating, alone or together with the purchaser representative, the merits and risks of exercising the Option; and (b) to give written assurances
satisfactory to the Company stating that such 

  

 6 

	 	    	person is acquiring the stock subject to the Option for such person’s own account and not with any present intention of selling or otherwise distributing the stock. These
requirements, and any assurances given pursuant to such requirements, shall be inoperative if (i) the issuance of the shares upon the exercise of the Option has been registered under a then currently effective registration statement under the
Securities Act, or (ii) as to any particular requirement, a determination is made by counsel for the Company that such requirement need not be met in the circumstances under the then applicable securities laws. 

  

	 	6.7	Termination of Employment or Relationship as an Employee, Director, or Consultant. In the event an Optionee’s Continuous Status as an Employee, Director, or Consultant
terminates (other than upon the Optionee’s death or Disability), the Optionee may exercise his or her Option, but only within such period of time as is determined by the Board, and only to the extent that the Optionee was entitled to exercise
at the date of termination (but in no event later than the expiration of the term of such Option as set forth in the Option Agreement). In the case of an ISO, the Board shall determine such period of time (in no event to exceed three months from the
date of termination) when the Option is granted. If, at the date of termination, the Optionee is not entitled to exercise his or her entire Option, the shares covered by the unexercisable portion of the Option shall revert to the Plan. If, after
termination, the Optionee does not exercise his or her Option within the time specified in the Option Agreement, the Option shall terminate, and the shares covered by such Option shall revert to the Plan. Provided, however, that in the event an
employee is a Covered Employee as defined under the Company’s Severance Plan, and such employee’s status as an employee is terminated as a result of a change-in-control as defined in the Severance Plan and such employee has elected to
receive the severance benefit provided for in the Severance Plan then all employee’s vested options shall remain exercisable for a period of two years from the date of termination of such employee’s employment with the Company.

  

	 	6.8	Retirement of Optionee. Notwithstanding any contrary Plan provision, in the event an Optionee’s employment as an Employee, Director, or Consultant terminates due to
Optionee’ s Retirement, the Optionee shall vest in that number of shares subject to the Option that would have vested had the Optionee remained an Employee, Director or Consultant for an additional two (2) years from the date of Retirement. In
addition, the Option shall remain exercisable until the expiration of its term. For purposes of this paragraph, Retirement shall mean the termination of service with the Company or an Affiliate of an Optionee on or after the date on which the
Optionee’s number of completed years of service with the Company or Affiliate and age equal or exceed seventy (70) (including termination due to death or Disability after such time). 

  

	 	6.9	Disability of Optionee. In the event an Optionee’s Continuous Status as an Employee, Director, or Consultant terminates as a result of the Optionee’s Disability,
the Optionee may exercise his or her Option, but only within twelve months from the date of such termination (or such shorter period specified in the Option Agreement), and only to the extent that the Optionee was entitled to exercise at the date of
such termination (but in no event later than the expiration of the term of such Option as set forth in the Option Agreement). If, at the date of termination, the Optionee is not entitled to exercise his or her entire Option, the shares covered by
the unexercisable portion of the Option shall revert to the Plan. If, after termination, the Optionee does not exercise his or her Option within the time specified herein, the Option shall terminate, and the shares covered by such Option shall
revert to the Plan. 

  

 7 

	 	6.10	Death of Optionee. In the event of the death of an Optionee, the Option may be exercised, at any time within eighteen months following the date of death (or such shorter
period specified in the Option Agreement, but in no event later than the expiration of the term of such Option as set forth in the Option Agreement), by the Optionee’s estate or by a person who acquired the right to exercise the Option by
bequest or inheritance, but only to the extent the Optionee was entitled to exercise the Option at the date of death. If, at the time of death, the Optionee was not entitled to exercise his or her entire Option, the shares covered by the
unexercisable portion of the Option shall revert to the Plan. If, after death, the Optionee’s estate or a person who acquired the right to exercise the Option by bequest or inheritance, or by assignment as provided herein, does not exercise the
Option within the time specified herein, the Option shall terminate, and the shares covered by such Option shall revert to the Plan. 

  

	 	6.11	Early Exercise. The Option Agreement may, but need not, include a provision whereby the Optionee may elect at any time while an Employee, Director, or Consultant to exercise
the Option as to any part or all of the shares subject to the Option prior to the full vesting of the Option. Any nonvested shares so purchased may be subject to a repurchase right in favor of the Company or to any other restriction the Board
determines to be appropriate. 

  

	 	6.12	Withholding. To the extent provided by the terms of an Option Agreement, the Optionee may satisfy any federal, state, or local tax withholding obligation relating to the
exercise of such Option by any of the following means or by a combination of such means: 

  

	 	6.12.1	cash payment; or 

  

	 	6.12.2	authorizing the Company to withhold shares from the shares of the common stock otherwise issuable to the participant as a result of the exercise of the Option; or

  

	 	6.12.3	delivering to the Company owned and unencumbered shares of the common stock of the Company. 

  

	7.	NO REPRICING, CANCELLATION, OR RE-GRANT OF OPTIONS. Except
for certain adjustments due to corporate transactions described in Section 11, the exercise price for any outstanding Option granted under the Plan may not be decreased after the Day of Determination for such Option grant nor may an outstanding
Option granted under the Plan be surrendered to the Company as consideration in exchange for the grant of a new Option with a lower exercise price. 

  

	8.	COVENANTS OF THE COMPANY. 

  

	 	8.1	Stock Availability. During the terms of the Option granted under the Plan, the Company shall keep available at all times the number of shares of stock required to satisfy
such grants up to the number of shares of stock authorized under the Plan. 

  

	 	8.2	Authority. The Company shall seek to obtain from each regulatory commission or agency having jurisdiction over the Plan such authority as may be required to issue and sell
shares of stock acquired under the grants, provided, however, that this undertaking shall not require the Company to register under the Securities Act either the Plan or any stock issued or issuable pursuant to any such Option. If, after reasonable
efforts, the Company is unable to obtain from any such regulatory commission or agency, the authority which counsel for the Company deems necessary for the lawful issuance and sale of stock under the Plan, the Company shall be relieved from any
liability for failure to issue and sell stock under such Options unless and until such authority is obtained. 

  

 8 

	9.	USE OF PROCEEDS FROM STOCK. Proceeds from the exercise of Options under the Plan shall constitute general
funds of the Company. 

  

	10.	MISCELLANEOUS. 

  

	 	10.1	Acceleration. The Board or the Committee shall have the power to accelerate the time at which an Option may first be exercised or the time during which an Option or any part
thereof will vest, notwithstanding the provisions in the Option Agreement stating the time at which it may first be exercised or the time during which it will vest. 

  

	 	10.2	Ownership Rights. Neither an Optionee nor any person to whom an Option is transferred under paragraph 6.4 shall be deemed to be the holder of, or to have any of the rights of
a holder with respect to any shares subject to such Option unless and until such person has satisfied all requirements for exercise of the Option pursuant to its terms. 

  

	 	10.3	Employment Rights. Nothing in the Plan or any instrument executed pursuant thereto shall confer upon any Employee, Director, Consultant, Optionee, or other holder of Options
any right to continue in the employ of the Company or any Affiliate (or to continue acting as a Director or Consultant) or shall affect the right of the Company or any Affiliate to terminate the employment or relationship as a Director or Consultant
of any Employee, Director, Consultant, or Optionee with or without cause. 

  

	 	10.4	ISO Value Limit. To the extent that the aggregate Fair Market Value (determined at the time of grant) of stock with respect to which ISOs granted after 1998 are exercisable
for the first time by any Optionee during any calendar year under all plans of the Company and its Affiliates exceeds $100,000, the Options or portions thereof which exceed such limit (according to the order in which they were granted) shall be
treated as NSOs. 

  

	11.	ADJUSTMENTS UPON CHANGES IN STOCK AND CORPORATE TRANSACTIONS.

  

	 	11.1	Stock Adjustments. If any change is made in the stock subject to the Plan, or subject to any Option (through merger, consolidation, reorganization, recapitalization, stock
dividend, dividend in property other than cash, stock split, liquidating dividend, combination of shares, exchange of shares, change in corporate structure or otherwise), the Plan and outstanding Options will be appropriately adjusted in the
class(es) and maximum number of shares subject to the Plan and the class(es) and number of shares and price per share of stock subject to outstanding Options. 

  

	 	11.2	Corporate Transactions. In the event of: (a) a merger or consolidation in which the Company is not the surviving corporation; (b) a reverse merger in which the Company is the
surviving corporation but the shares of the Company’s common stock outstanding immediately preceding the merger are converted by virtue of the merger into other property, whether in the form of securities, cash, or otherwise; (c) a strategic
corporate event, such as a merger or acquisition, where the Company is technically the surviving entity, but where other elements of a change of control are present, i.e. change in management team or board composition; (d) a transaction which the
Board determines in its sole discretion to constitute a change in control of the Company; or (e) any capital reorganization in which more than fifty percent (50%) of the shares of the Company entitled to vote are exchanged, then, the time during
which Options outstanding under the Plan become vested shall be accelerated and all outstanding Options shall become immediately exercisable upon such event and such Options shall continue to be exercisable until the later of (i) twenty-four (24)
months from the effective date of such event, or (ii) the time specified in the Option Agreement during which the Option is 

  

 9 

	 	    	exercisable following an Optionee’s termination of service; provided, however, that in no event shall the Option be exercisable after the expiration of its term.

  
 12. AMENDMENT OF
THE PLAN. 
  

	 	12.1	Amendments. The Board at any time, and from time to time, may amend the Plan. However, as provided in Section 11, no amendment shall be effective unless approved by the
stockholders of the Company within twelve months before or after the adoption of the amendment, where the amendment will: 

  

	 	12.1.1	Increase the number of shares reserved for Options under the Plan; 

  

	 	12.1.2	Modify the requirements as to eligibility for participation in the Plan to the extent such modification requires stockholder approval in order for the Plan to satisfy the
requirements of Sections 162(m) and 422 of the Code; 

  

	 	12.1.3	Modify the Plan in any other way if such modification requires stockholder approval in order for the Plan to satisfy the requirements of Section 422 of the Code or to comply with
the requirements of Rule 16b-3 or Nasdaq or other applicable securities exchange listing requirements; 

  

	 	12.1.4	Decrease the minimum exercise price set forth in paragraph 6.2; or 

  

	 	12.1.5	Remove the limitation provided in Section 7. 

  

	 	12.2	Compliance. It is expressly contemplated that the Board may amend the Plan in any respect the Board deems necessary or advisable to provide under the provisions of the Code
and the regulations promulgated thereunder relating to ISOs and/or to bring the Plan and/or ISOs granted under it into compliance therewith. 

  

	 	12.3	Consent. Rights and obligations under any Option granted before amendment of the Plan shall not be altered or impaired by any amendment of the Plan unless (a) the Company
requests the consent of the person to whom the Option was granted and (b) such person consents in writing. 

  
 13. TERMINATION OR SUSPENSION OF THE PLAN. 
  

	 	13.1	Termination. The Board may suspend or terminate the Plan at any time. Unless sooner terminated, the Plan shall terminate on midnight, May 31, 2008. No Options may be granted
under the Plan while the Plan is suspended or after it is terminated. 

  

	 	13.2	Rights and Obligations. Any Options granted while the Plan is in effect shall not be altered or impaired by suspension or termination of the Plan, except with the consent of
the holder of the Options. 

  

	14.	EFFECTIVE DATE OF PLAN. The Plan shall become effective as determined by the Board, but no Options granted under the Plan
shall be exercisable unless and until the Plan has been approved by the stockholders of the Company. 

  

 10

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