Exhibit 10.1

INTEGRATED SILICON SOLUTION, INC.

1993 EMPLOYEE STOCK PURCHASE PLAN

(as amended through February 6, 2009)

The
following constitute the provisions of the 1993 Employee Stock Purchase Plan of Integrated Silicon Solution, Inc.

1. Purpose. The purpose of the
Plan is to provide employees of the Company and its Designated Subsidiaries with an opportunity to purchase Common Stock of the Company through accumulated payroll deductions. It is the intention of the Company to have the Plan qualify as an
Employee Stock Purchase Plan under Section 423 of the Internal Revenue Code of 1986, as amended. The provisions of the Plan, accordingly, shall be construed so as to extend and limit participation in a manner consistent with the
requirements of that section of the Code.

2. Definitions.



| | (a) | Board shall mean the Board of Directors of the Company.
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| | (b) | Code shall mean the Internal Revenue Code of 1986, as amended.
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| | (c) | Common Stock shall mean the Common Stock of the Company.
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| | (d) | Company shall mean Integrated Silicon Solution, Inc., and any Designated Subsidiary of the Company.
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| | (e) | Compensation shall mean all base straight time gross earnings, including commissions, but exclusive of payments for overtime, shift premium, incentive
compensation, incentive payments, bonuses, and other compensation.
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| | (f) | Designated Subsidiaries shall mean the Subsidiaries which have been designated by the Board from time to time in its sole discretion as eligible to participate in
the Plan.
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| | (g) | Employee shall mean any individual who is an employee of the Company for tax purposes whose customary employment with the Company is at least twenty
(20) hours per week and more than five (5) months in any calendar year. For purposes of the Plan, the employment relationship shall be treated as continuing intact while the individual is on sick leave or other leave of absence approved by
the Company. Where the period of leave exceeds 90 days and the individuals right to reemployment is not guaranteed either by statute or by contract, the employment relationship will be deemed to have terminated on the 91st day of such leave.
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| | (h) | Enrollment Date shall mean the first day of each Offering Period.
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| | (i) | Exercise Date shall mean the last day of each Purchase Period.
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| | (j) | Fair Market Value shall mean, as of any date, the value of Common Stock determined as follows:
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(1) If the Common Stock is listed on any established stock exchange or a national market system, including without limitation the National Market of the
National Association of Securities Dealers, Inc. Automated Quotation (NASDAQ) System, its Fair Market Value shall be the closing sale price for the Common Stock (or the mean of the closing bid and asked prices, if no sales were
reported), as quoted on such exchange (or the exchange with the greatest volume of trading in Common Stock) or system on the date of such determination, as reported in The Wall Street Journal or such other source as the Board deems reliable,
or;

(2) If the Common Stock is quoted on the NASDAQ system (but not on the National Market thereof) or is regularly quoted by a recognized
securities dealer but selling prices are not reported, its Fair Market Value shall be the mean of the closing bid and asked prices for the Common Stock on the date of such determination, as reported in The Wall Street Journal or such other
source as the Board deems reliable, or;



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(3) In the absence of an established market for the Common Stock, the Fair Market Value thereof shall be
determined in good faith by the Board.



| | (k) | Offering Period shall mean the period of approximately twenty-four (24) months during which an option granted pursuant to the Plan may be exercised,
commencing on the first Trading Day on or after February 1 and August 1 of each year and terminating on the last Trading Day in the periods ending twenty-four (24) months later. The duration and timing of Offering Periods may be
changed pursuant to Section 4 of this Plan.
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| | (l) | Plan shall mean this Employee Stock Purchase Plan.
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| | (m) | Purchase Price shall mean an amount determined by the Board or its committee administering the Plan, from time to time, in its discretion and on a uniform and
non-discriminating basis, for all options to be granted on an Enrollment Date. However, in no event shall the price be less than 85% of the Fair Market Value of a share of Common Stock on the Enrollment Date or on the Exercise Date, whichever is
lower.
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| | (n) | Purchase Period shall mean the approximately six month period commencing after one Exercise Date and ending with the next Exercise Date, except that the first
Purchase Period of any Offering Period shall commence on the Enrollment Date and end with the next Exercise Date.
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| | (o) | Reserves shall mean the number of shares of Common Stock covered by each option under the Plan which have not yet been exercised and the number of shares of
Common Stock which have been authorized for issuance under the Plan but not yet placed under option.
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| | (p) | Subsidiary shall mean a corporation, domestic or foreign, of which not less than 50% of the voting shares are held by the Company or a Subsidiary, whether or not
such corporation now exists or is hereafter organized or acquired by the Company or a Subsidiary.
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| | (q) | Trading Day shall mean a day on which national stock exchanges and the NASDAQ System are open for trading.
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3. Eligibility.



| | (a) | Any Employee (as defined in Section 2(h)), who shall be employed by the Company on a given Enrollment Date shall be eligible to participate in the Plan.
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| | (b) | Any provisions of the Plan to the contrary notwithstanding, no Employee shall be granted an option under the Plan (i) if, immediately after the grant, such Employee (or any
other person whose stock would be attributed to such Employee pursuant to Section 424(d) of the Code) would own capital stock of the Company and/or hold outstanding options to purchase such stock possessing five percent (5%) or more of the
total combined voting power or value of all classes of the capital stock of the Company or of any Subsidiary, or (ii) which permits his or her rights to purchase stock under all employee stock purchase plans of the Company and its subsidiaries
to accrue at a rate which exceeds twenty-five thousand dollars ($25,000) worth of stock (determined at the fair market value of the shares at the time such option is granted) for each calendar year in which such option is outstanding at any time.
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4. Offering Periods. The Plan shall be implemented by consecutive, overlapping Offering Periods with a new Offering Period commencing
on the first Trading Day on or after February 1 and August 1 each year, or on such other dates as the Board shall determine, and continuing thereafter until terminated in accordance with Section 19 hereof. The Board shall have the
power to change the duration of Offering Periods (including the commencement and termination dates thereof) with respect to future offerings without stockholder approval if such change is announced at least five (5) days prior to the scheduled
beginning of the first Offering Period to be affected thereafter.



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5. Participation.



| | (a) | An eligible Employee may become a participant in the Plan by completing a subscription agreement authorizing payroll deductions in the form of Exhibit A to this Plan and
filing it with the Companys payroll office prior to the applicable Enrollment Date or by submitting a subscription agreement in such other form and manner as the Board or its committee administering the Plan may determine from time to time (in
its discretion and on a non-discriminatory basis).
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| | (b) | Payroll deductions for a participant shall commence on the first payroll following the Enrollment Date and shall end on the last payroll in the Offering Period to which such
authorization is applicable, unless sooner terminated by the participant as provided in Section 10 hereof.
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6. Payroll
Deductions.



| | (a) | At the time a participant files his or her subscription agreement, he or she shall elect to have payroll deductions made on each pay day during the Offering Period in an amount not
exceeding ten percent (10%) (or such lesser percentage that the Board or its committee administering the Plan may establish from time to time, in its discretion and on a non-discriminatory basis, for all options to be granted on any Enrollment
Date) of the Compensation which he or she receives on each pay day during the Offering Period, and the aggregate of such payroll deductions during the Offering Period shall not exceed ten percent (10%) of the participants Compensation
during said Offering Period.
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| | (b) | All payroll deductions made for a participant shall be credited to his or her account under the Plan and will be withheld in whole percentages only. A participant may not make any
additional payments into such account.
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| | (c) | A participant may discontinue his or her participation in the Plan as provided in Section 10 hereof, or may increase or decrease the rate of his or her payroll deductions
during the Offering Period by completing or filing with the Company a new subscription agreement authorizing a change in payroll deduction rate. The Board may, in its discretion, limit the number of participation rate changes during any Offering
Period. The change in rate shall be effective with the first full payroll period following five (5) business days after the Companys receipt of the new subscription agreement unless the Company elects to process a given change in
participation more quickly. A participants subscription agreement shall remain in effect for successive Offering Periods unless terminated as provided in Section 10 hereof.
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| | (d) | Notwithstanding the foregoing, to the extent necessary to comply with Section 423(b)(8) of the Code and Section 3(b) hereof, a participants payroll deductions may be
decreased to 0% at any time during any Purchase Period. Payroll deductions shall recommence at the rate provided in such participants subscription agreement at the beginning of the first Purchase Period which is scheduled to end in the
following calendar year, unless terminated by the participant as provided in Section 10 hereof.
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7. Grant of Option. On the
Enrollment Date of each Offering Period, each eligible Employee participating in such Offering Period shall be granted an option to purchase on each Exercise Date during such Offering Period (at the applicable Purchase Price) up to a number of
shares of the Companys Common Stock determined by dividing such Employees payroll deductions accumulated prior to such Exercise Date and retained in the Participants account as of the Exercise Date by the applicable Purchase Price;
provided that in no event shall an Employee be permitted to purchase during each Purchase Period more than a number of Shares determined by dividing $12,500 by the Fair Market Value of a share of the Companys Common Stock on the Enrollment
Date (except if there is only one Purchase Period in a calendar year, in which case the dollar limit in the preceding equation shall be $25,000 instead of $12,500), and provided further that such purchase shall be subject to the limitations set
forth in Sections 3(b) and 12 hereof. Exercise of the option shall occur as provided in Section 8 hereof, unless the participant has withdrawn pursuant to Section 10 hereof, and shall expire on the last day of the Offering Period.



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8. Exercise of Option. Unless a participant withdraws from the Plan as provided in Section 10 hereof, his or
her option for the purchase of shares will be exercised automatically on the Exercise Date, and the maximum number of full shares subject to option shall be purchased for such participant at the applicable Purchase Price with the accumulated payroll
deductions in his or her account. No fractional shares will be purchased; any payroll deductions accumulated in a participants account which are not sufficient to purchase a full share shall be retained in the participants account for
the subsequent Purchase Period or Offering Period, subject to earlier withdrawal by the participant as provided in Section 10 hereof. Any other monies left over in a participants account after the Exercise Date shall be returned to the
participant. During a participants lifetime, a participants option to purchase shares hereunder is exercisable only by him or her.

9.
Delivery. As promptly as practicable after each Exercise Date on which a purchase of shares occurs, the Company shall arrange the delivery to each participant, or a custodian or broker, as appropriate, of a certificate representing the shares
purchased upon exercise of his or her option. As determined by the Board or its committee administering the Plan, from time to time, such shares shall be delivered as physical certificates or by means of a book entry system.

10. Withdrawal; Termination of Employment.



| | (a) | A participant may withdraw all but not less than all the payroll deductions credited to his or her account and not yet used to exercise his or her option under the Plan at any time
by giving written notice to the Company in the form of Exhibit B to this Plan or by providing notice in such other form and manner as the Board or its committee administering the Plan may determine from time to time (in its discretion
and on a non-discriminating basis). All of the participants payroll deductions credited to his or her account will be paid to such participant promptly after receipt of notice of withdrawal and such participants option for the Offering
Period will be automatically terminated, and no further payroll deductions for the purchase of shares will be made for such Offering Period. If a participant withdraws from an Offering Period, payroll deductions will not resume at the beginning of
the succeeding Offering Period unless the participant delivers to the Company a new subscription agreement.
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| | (b) | Upon a participants ceasing to be an Employee (as defined in Section 2(h) hereof), for any reason, including by virtue of him or her having failed to remain an Employee
of the Company for at least twenty (20) hours per week during an Offering Period in which the Employee is a participant, he or she will be deemed to have elected to withdraw from the Plan and the payroll deductions credited to such
participants account during the Offering Period but not yet used to exercise the option will be returned to such participant or, in the case of his or her death, to the person or persons entitled thereto under Section 14 hereof, and such
participants option will be automatically terminated.
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11. Interest. No interest shall accrue on the payroll deductions of a
participant in the Plan.

12. Stock.



| | (a) | The maximum number of shares of the Companys Common Stock which shall be made available for sale under the Plan shall be four million four hundred thousand
(4,400,000) shares, subject to adjustment upon changes in capitalization of the Company as provided in Section 18 hereof. If, on a given Exercise Date, the number of shares with respect to which options are to be exercised exceeds the
number of shares then available under the Plan, the Company shall make a pro rata allocation of the shares remaining available for purchase in as uniform a manner as shall be practicable and as it shall determine to be equitable.
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| | (b) | The participant will have no interest or voting right in shares covered by his or her option until such option has been exercised.
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| | (c) | Shares to be delivered to a participant under the Plan will be registered in the name of the participant or in the name of the participant and his or her spouse.
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13.Administration.



| | (a) | Administrative Body. The Plan shall be administered by the Board or a committee of members of the Board appointed by the Board. The Board or its committee shall have full and
exclusive discretionary authority to construe, interpret and apply the terms of the Plan, to determine eligibility and to adjudicate all disputed claims filed under the Plan. Every finding, decision and determination made by the Board or its
committee shall, to the full extent permitted by law, be final and binding upon all parties. Members of the Board who are eligible Employees are permitted to participate in the Plan, provided that:
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(1) Members of the Board who are eligible to participate in the Plan may not vote on any matter affecting the administration of the Plan or the grant of
any option pursuant to the Plan.

(2) If a Committee is established to administer the Plan, no member of the Board who is eligible to
participate in the Plan may be a member of the Committee.



| | (b) | Rule 16b-3 Limitations. Notwithstanding the provisions of Subsection (a) of this Section 13, in the event that Rule 16b-3 promulgated under the Securities Exchange
Act of 1934, as amended (the Exchange Act), or any successor provision (Rule 16b-3) provides specific requirements for the administrators of plans of this type, the Plan shall be only administered by such a body and in such a
manner as shall comply with the applicable requirements of Rule 16b-3. Unless permitted by Rule 16b-3, no discretion concerning decisions regarding the Plan shall be afforded to any committee or person that is not disinterested as that
term is used in Rule 16b-3.
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14. Designation of Beneficiary.



| | (a) | A participant may file, in a manner designated from time to time by the Board or its committee administering the Plan, a 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 an Exercise Date on which the option is exercised but prior to delivery to such participant of such shares and cash. In
addition, a participant may file a 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 prior to exercise of the option. If a participant is married
and the designated beneficiary is not the spouse, spousal consent shall be required for such designation to be effective.
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| | (b) | Such designation of beneficiary may be changed by the participant at any time in a manner designated from time to time by the Board or its committee administering the Plan. 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.
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15. Transferability. Neither payroll deductions credited to a participants account nor any rights with regard to the exercise of an option or to receive shares under the Plan may be assigned, transferred, pledged or otherwise
disposed of in any way (other than by will, the laws of descent and distribution or as provided in Section 14 hereof) by the participant. Any such attempt at assignment, transfer, pledge or other disposition shall be without effect, except that
the Company may treat such act as an election to withdraw funds from an Offering Period in accordance with Section 10 hereof.

16.Use of
Funds. All payroll deductions received or held by the Company under the Plan may be used by the Company for any corporate purpose, and the Company shall not be obligated to segregate such payroll deductions.



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17.Reports. Individual accounts will be maintained for each participant in the Plan. Statements of account will
be given to participating Employees at least annually, which statements will set forth the amounts of payroll deductions, the Purchase Price, the number of shares purchased and the remaining cash balance, if any.

18.Adjustments Upon Changes in Capitalization, Dissolution, Liquidation, Merger or Asset Sale.



| | (a) | Changes in Capitalization. Subject to any required action by the stockholders of the Company, the Reserves as well as the price per share of Common Stock covered by each
option under the Plan which has not yet been exercised shall be proportionately adjusted for any increase or decrease in the number of issued shares of Common Stock resulting from a stock split, reverse stock split, stock dividend, combination or
reclassification of the Common Stock, or any other increase or decrease in the number of shares of Common Stock effected without receipt of consideration by the Company; provided, however, that conversion of any convertible securities of the Company
shall not be deemed to have been effected without receipt of consideration. Such adjustment shall be made by the Board, whose determination in that respect shall be final, binding and conclusive. Except as expressly provided herein, no
issuance by the Company of shares of stock of any class, or securities convertible into shares of stock of any class, shall affect, and no adjustment by reason thereof shall be made with respect to, the number or price of shares of Common Stock
subject to an option.
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| | (b) | Dissolution or Liquidation. In the event of the proposed dissolution or liquidation of the Company, the Offering Periods will terminate immediately prior to the consummation
of such proposed action, unless otherwise provided by the Board.
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| | (c) | Merger or Asset Sale. In the event of a proposed sale of all or substantially all of the assets of the Company, or the merger of the Company with or into another corporation,
each option under the Plan shall be assumed or an equivalent option shall be substituted by such successor corporation or a parent or subsidiary of such successor corporation, unless the Board determines, in the exercise of its sole discretion and
in lieu of such assumption or substitution, to shorten the Offering Periods then in progress by setting a new Exercise Date (the New Exercise Date) or to cancel each outstanding right to purchase and refund all sums collected from
participants during the Offering Period then in progress. If the Board shortens the Offering Periods then in progress in lieu of assumption or substitution in the event of a merger or sale of assets, the Board shall notify each participant in
writing, at least ten (10) business days prior to the New Exercise Date, that the Exercise Date for his option has been changed to the New Exercise Date and that his option will be exercised automatically on the New Exercise Date, unless prior
to such date he has withdrawn from the Offering Periods as provided in Section 10 hereof. For purposes of this paragraph, an option granted under the Plan shall be deemed to be assumed if, following the sale of assets or merger, the option
confers the right to purchase, for each share of option stock subject to the option immediately prior to the sale of assets or merger, the consideration (whether stock, cash or other securities or property) received in the sale of assets or merger
by holders of Common Stock for each share of Common Stock held on the effective date of the transaction (and if such 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 such consideration received in the sale of assets or merger was not solely common stock of the successor corporation or its parent (as defined in Section 424(e) of the Code), the Board may,
with the consent of the successor corporation and the participant, provide for the consideration to be received upon exercise of the option to be solely common stock of the successor corporation or its parent equal in fair market value to the per
share consideration received by holders of Common Stock and the sale of assets or merger.
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The Board may, if it so determines
in the exercise of its sole discretion, also make provision for adjusting the Reserves, as well as the price per share of Common Stock covered by each outstanding option, in the event the Company effects one or more reorganizations,
recapitalization, rights offerings or other increases or reductions of shares of its outstanding Common Stock, and in the event of the Company being consolidated with or merged into any other corporation.



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19. Amendment or Termination.



| | (a) | The Board or its committee administering the Plan may at any time and for any reason terminate or amend the Plan. Except as provided in Section 18 hereof, no such termination
can affect options previously granted, provided that an Offering Period may be terminated by the Board of Directors on any Exercise Date if the Board determines that the termination of the Plan is in the best interests of the Company and its
stockholders. Except as provided in Section 18 hereof, no amendment may make any change in any option theretofore granted which adversely affects the rights of any participant. To the extent necessary to comply with Rule 16b-3 or under
Section 423 of the Code (or any successor rule or provision or any other applicable law or regulation), the Company shall obtain stockholder approval in such a manner and to such a degree as required.
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| | (b) | Without stockholder consent and without regard to whether any participant rights may be considered to have been adversely affected, the Board (or its committee) shall be
entitled to change the Offering Periods, limit the frequency and/or number of changes in the amount withheld during an Offering Period, establish the exchange ratio applicable to amounts withheld in a currency other than U.S. dollars, permit payroll
withholding in excess of the amount designated by a participant in order to adjust for delays or mistakes in the Companys processing of properly completed withholding elections, establish reasonable waiting and adjustment periods and/or
accounting and crediting procedures to ensure that amounts applied toward the purchase of Common Stock for each participant properly correspond with amounts withheld from the participants Compensation, and establish such other limitations or
procedures as the Board (or its committee) determines in its sole discretion advisable which are consistent with the Plan.
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20.
Notices. All notices or other communications by a participant to the Company under or in connection with the Plan shall be deemed to have been duly given when received in the form specified by the Company at the location, or by the person,
designated by the Company for the receipt thereof.

21. Conditions Upon Issuance of Shares. Shares shall not be issued with respect to an option
unless the exercise of such option and the issuance and delivery of such shares pursuant thereto shall comply with all applicable provisions of law, domestic or foreign, including, without limitation, the Securities Act of 1933, as amended, the
Exchange Act, the rules and regulations promulgated thereunder, and the requirements of any stock exchange upon which the shares may then be listed, and shall be further subject to the approval of counsel for the Company with respect to such
compliance.

As a condition to the exercise of an option, the Company may require the person exercising such option to represent and
warrant at the time of any such exercise that the shares are being purchased only for investment and without any present intention to sell or distribute such shares if, in the opinion of counsel for the Company, such a representation is required by
any of the aforementioned applicable provisions of law.

22. Term of Plan. The Plan shall become effective upon the earlier to occur of its adoption
by the Board of Directors or its approval by the stockholders of the Company. It shall continue in effect until February 2, 2015 unless sooner terminated under Section 19 hereof.

23. Additional Restrictions of Rule 16b-3. The terms and conditions of options granted hereunder to, and the purchase of shares by, persons subject to
Section 16 of the Exchange Act shall comply with the applicable provisions of Rule 16b-3. This Plan shall be deemed to contain, and such options shall contain, and the shares issued upon exercise thereof shall be subject to, such additional
conditions and restrictions as may be required by Rule 16b-3 to qualify for the maximum exemption from Section 16 of the Exchange Act with respect to Plan transactions.



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