Amended and Restated Employee Stock Purchase Plan




EXHIBIT 10.8.1 
 
MICRO THERAPEUTICS, INC. 
 
THIRD AMENDED AND RESTATED 
EMPLOYEE STOCK PURCHASE PLAN 
 
The MICRO THERAPEUTICS, INC. EMPLOYEE STOCK PURCHASE PLAN (the
“Plan”) was adopted effective February 18, 1997, was amended May 29, 1998 and May 27, 1999, and is hereby amended and restated by MICRO THERAPEUTICS, INC., a Delaware corporation (the “Company”) to be effective on June 1, 2002
(the “Amendment Date”). 
 
1.

 
PURPOSE OF THE PLAN

 
1.1 Purpose. The
Company has determined that it is in its best interest to provide incentives to attract and retain employees and to increase employee morale by providing a program through which employees of the Company, and of such of the Company’s
subsidiaries as the Company’s Board of Directors (the “Board of Directors”) may from time to time designate (each a “Designated Subsidiary”, and collectively, “Designated Subsidiaries”), may acquire a proprietary
interest in the Company through the purchase of shares of the common stock of the Company (“Company Stock”). The Plan was established by the Company to permit employees to subscribe for and purchase directly from the Company shares of the
Company Stock at a discount from the market price, and to pay the purchase price in installments by payroll deductions. The Plan is intended to qualify as an “employee stock purchase plan” under Section 423 of the Internal Revenue Code of
1986, as amended from time to time (the “Code”). The provisions of the Plan are to be construed in a manner consistent with the requirements of Section 423 of the Code. The Plan is not intended to be an employee benefit plan under the
Employee Retirement Income Security Act of 1974, and therefore is not required to comply with that Act. 
 
2. 
 
DEFINITIONS 
 
2.1 Amendment Date. “Amendment Date” means June 1, 2002. 
 
2.2 Compensation. “Compensation” means the amount indicated on the Form W-2, including any elective
deferrals with respect to a plan of the Company qualified under either Section 125 or Section 401(a) of the Code, issued to an employee by the Company. 
 
2.3 Employee. “Employee” means each person currently employed by the Company or any of its Designated
Subsidiaries, any portion of whose income is subject to withholding of income tax or for whom Social Security retirement contributions are made by the Company or any Designated Subsidiary. 
 
2.4 Effective Date. “Effective Date” means the effective date of the
Company’s first Registration Statement filed with the Securities and Exchange Commission registering Company Stock. 
 









 
2.5
5% Owner. “5% Owner” means an Employee who, immediately after the grant of any rights under the Plan, would own Company Stock or hold outstanding options to purchase Company Stock possessing 5% or more of
the total combined voting power of all classes of stock of the Company. For purposes of this Section, the ownership attribution rules of Code Section 425(d) shall apply. 
 
2.6 Grant Date. “Grant Date” means the first day of each Offering Period (July
1 and January 1) under the Plan. However, for the first Offering Period, the Grant Date shall be the Effective Date. 
 
2.7 Participant. “Participant” means an Employee who has satisfied the eligibility requirements of Section
3.1 and has become a participant in the Plan in accordance with Section 3.2. 
 
2.8 Plan Year. “Plan Year” means the twelve consecutive month period ending on the last day of December. 
 
2.9 Offering Period. “Offering
Period” means the six-month periods from July 1 through December 31 and January 1 through June 30 of each Plan Year. However, the first Offering Period shall commence on the Effective Date and end on June 30, 1997, regardless of whether such
initial Offering Period is more or less than six months. 
 
2.10 Purchase Date. “Purchase Date” means the last day of each Offering Period (December 31 or June 30). 
 
3. 
 
ELIGIBILITY AND PARTICIPATION 
 
3.1 Eligibility. Each Employee of the Company, or any Designated Subsidiary, who, on the Grant Date, is customarily
engaged on a regularly-scheduled basis of more than twenty (20) hours per week for more than five (5) months per calendar year and who has been employed for at least ninety (90) days (or, for the initial Offering Period only, such Employees who are
employed on the Effective Date) in the rendition of personal services to the Company, or any Designated Subsidiary, may become a Participant in the Plan on the Grant Date coincident with or next following his satisfaction of such requirements of
employment with the Company or any Designated Subsidiary. 
 
3.2 Participation. An Employee who has satisfied the eligibility requirements of Section 3.1 may become a Participant in the Plan upon his completion and delivery to the Human Resources Department of the Company
of a stock purchase agreement provided by the Company (the “Stock Purchase Agreement”) authorizing payroll deductions. Payroll deductions for a Participant shall commence on the Grant Date coincident with or next following the filing of
the Participant’s Stock Purchase Agreement and shall remain in effect until revoked by the Participant by the filing of a notice of withdrawal from the Plan under Article VIII or by the filing of a new Stock Purchase Agreement providing for a
change in the Participant’s payroll deduction rate under Section 5.2. 
 
3.3 Special Rules. Under no circumstances shall 
 
(a) A 5% Owner be granted a right to purchase Company Stock under the Plan; 
 

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(b) A
Participant be entitled to purchase Company Stock under the Plan which, when aggregated with all other employee stock purchase plans of the Company, exceed an amount equal to the Aggregate Maximum. “Aggregate Maximum” means an amount equal
to $25,000 worth of Company Stock (determined using the fair market value of such Company Stock at each applicable Grant Date) during each calendar year; or 
 
(c) The number of shares of Company Stock purchasable by a Participant on any Purchase Date exceed 2,500 shares, subject to
periodic adjustments under Section 10.4. 
 
4.

 
OFFERING PERIODS 
 
4.1 Offering Periods. The initial grant
of the right to purchase Company Stock under the Plan shall occur on the Effective Date and terminate on June 30, 1997. Thereafter, the Plan shall provide for Offering Periods commencing on each Grant Date and terminating on the next following
Purchase Date. 
 
5. 
 
PAYROLL DEDUCTIONS 
 
5.1 Participant Election. Upon completion
of the Stock Purchase Agreement, each Participant shall designate the amount of payroll deductions to be made from his or her paycheck to purchase Company Stock under the Plan. The amount of payroll deductions shall be designated in whole
percentages of Compensation or in whole dollar amounts, not to exceed 20% of Compensation. The amount so designated upon the Stock Purchase Agreement shall be effective as of the next Grant Date and shall continue until terminated or altered in
accordance with Section 5.2 below. 
 
5.2 Changes in Election. A Participant may terminate participation in the Plan at any time prior to the close of an Offering Period as provided in Article 8. A Participant may decrease or increase the rate of
payroll deductions one time during any Offering Period by completing and delivering to the Human Resources Department of the Company a new Stock Purchase Agreement setting forth the desired change. A Participant may also terminate payroll deductions
and have accumulated deductions for the Offering Period applied to the purchase of Company Stock as of the next Purchase Date by completing and delivering to the Human Resources Department a new Stock Purchase Agreement setting forth the desired
change. Any change under this Section shall become effective on the next payroll period (to the extent practical under the Company’s payroll practices) following the delivery of the new Stock Purchase Agreement. 
 
5.3 Participant Accounts. The Company
shall establish and maintain a separate account (“Account”) for each Participant. The amount of each Participant’s payroll deductions shall be credited to his Account. No interest will be paid or allowed on amounts credited to a
Participant’s Account. All payroll deductions received by the Company under the Plan are general corporate assets of the Company and may be used by the Company for any corporate purpose. The Company is not obligated to segregate such payroll
deductions. 
 

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6.

 
GRANT OF PURCHASE RIGHTS

 
6.1 Right to Purchase
Shares. On each Grant Date, each Participant shall be granted a right to purchase at the price determined under Section 6.2 that number of shares and partial shares of Company Stock that can be purchased or issued by the Company based upon
that price with the amounts held in his Account, subject to the limits set forth in Section 3.3. In the event that there are amounts held in a Participant’s Account that are not used to purchase Company Stock, such amounts shall remain in the
Participant’s Account and shall be eligible to purchase Company Stock in any subsequent Offering Period. 
 
6.2 Purchase Price. The purchase price for any Offering Period shall be the lesser of: 
 
(a) 85% of the Fair Market Value of Company Stock on
the Grant Date; or 
 
(b) 85% of the Fair
Market Value of Company Stock on the Purchase Date. 
 
6.3 Fair Market Value. “Fair Market Value” means for the initial Grant Date (which is the Effective Date), the price per share at which the Common Stock is to be sold to the public in the initial public
offering of the Common Stock. For any subsequent date thereafter, “Fair Market Value” shall mean the value of one share of Company Stock, determined as follows: 
 
(a) If the Company Stock is then listed or admitted to trading on the Nasdaq National Market System
or a stock exchange which reports closing sale prices, the Fair Market Value shall be the closing sale price on the date of valuation on the Nasdaq National Market System or principal stock exchange on which the Company Stock is then listed or
admitted to trading, or, if no closing sale price is quoted or no sale takes place on such day, then the Fair Market Value shall be the closing sale price of the Company Stock on the Nasdaq National Market System or such exchange on the next
preceding day on which a sale occurred. 
 
(b) If the Company Stock is not then listed or admitted to trading on the Nasdaq National Market System or a stock exchange which reports closing sale prices, the Fair Market Value shall be the average of the closing bid and
asked prices of the Company Stock in the over-the-counter market on the date of valuation. 
 
(c) If neither (a) nor (b) is applicable as of the date of valuation, then the Fair Market Value shall be determined by the Administrator in good faith using any reasonable method of valuation,
which determination shall be conclusive and binding on all interested parties. 
 
7. 
 
PURCHASE OF STOCK 
 
7.1 Purchase of Company Stock. Absent an election by the Participant to terminate and have his or her Account returned, on each Purchase Date, the Plan shall purchase on behalf of each Participant the maximum
number of whole shares of Company Stock at the purchase price determined under Section 6.2 above as can be purchased with the amounts held in each Participant’s Account. In the event that there are amounts held in a Participant’s Account
that are not used to purchase Company Stock, all such amounts shall be held in the Participant’s Account and carried forward to the next Offering Period. 
 

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7.2
Delivery of Company Stock. 
 
(a) Company Stock acquired under the Plan may either be issued directly to Participants or may be issued to a contract administrator (“Administrator”) engaged by the Company to administer the Plan under Article 9. If
the Company Stock is issued in the name of the Administrator, all Company Stock so issued (“Plan Held Stock”) shall be held in the name of the Administrator for the benefit of the Plan. The Administrator shall maintain accounts for the
benefit of the Participants which shall reflect each Participant’s interest in the Plan Held Stock. Such accounts shall reflect the number of whole and partial shares of Company Stock that are being held by the Administrator for the benefit of
each Participant. 
 
(b) Any Participant
may elect to have the Company Stock purchased under the Plan from his or her Account be issued directly to the Participant. Any election under this paragraph shall be on the forms provided by the Company and shall be issued in accordance with
paragraph (c) below. 
 
(c) In the event
that Company Stock under the Plan is issued directly to a Participant, the Company will deliver to each Participant a stock certificate or certificates issued in his name for the number of shares of Company Stock purchased as soon as practicable
after the Purchase Date. Where Company Stock is issued under this paragraph, only full shares of stock will be issued to a Participant. The time of issuance and delivery of shares may be postponed for such period as may be necessary to comply with
the registration requirements under the Securities Act of 1933, as amended, the listing requirements of any securities exchange on which the Company Stock may then be listed, or the requirements under other laws or regulations applicable to the
issuance or sale of such shares. 
 
8.

 
WITHDRAWAL 
 
8.1 In Service Withdrawals. At any time
prior to the Purchase Date of an Offering Period, any Participant may withdraw the amounts held in his Account by executing and delivering to the Human Resources Department for the Company written notice of withdrawal on the form provided by the
Company. In such a case, the entire balance of the Participant’s Account shall be paid to the Participant, without interest, as soon as is practicable. Upon such notification, the Participant shall cease to participate in the Plan for the
remainder of the Offering Period, and for the immediately following Offering Period in which the notice is given. Any Employee who has withdrawn under this Section shall be excluded from participation in the Plan for the remainder of the Offering
Period and for the immediately following Offering Period, but may then be reinstated as a participant for a subsequent Offering Period by executing and delivering a new Stock Purchase Agreement to the Human Resources Department of the
Company. 
 
8.2 Termination of
Employment. 
 
(a) In the event
that a Participant’s employment with the Company terminates for any reason, the Participant shall cease to participate in the Plan on the date of termination. As soon as is practical following the date of termination, the entire balance of the
Participant’s Account shall be paid to the Participant or his beneficiary, without interest. 
 
(b) A Participant may file a written designation of a beneficiary who is to receive any shares of Company Stock purchased under
the Plan or any cash from the Participant’s Account 
 

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in the event of his or her death subsequent to a Purchase Date, but prior to delivery 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 his death prior to a Purchase Date under paragraph (a) above. 
 
(c) Any beneficiary designation under paragraph (b)
above may be changed by the Participant at any time by written notice. In the event of the death of a Participant, the Committee may rely upon the most recent beneficiary designation it has on file as being the appropriate beneficiary. In the event
of the death of a Participant where no valid beneficiary designation exists or the beneficiary has predeceased the Participant, the Committee shall deliver any cash or shares of Company Stock 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 Committee, the Committee, in its sole discretion, may deliver such shares of Company Stock or cash to the spouse or any one or more dependents or
relatives of the Participant, or if no spouse, dependent or relative is known to the Committee, then to such other person as the Committee may designate. 
 
9. 
 
PLAN ADMINISTRATION 
 
9.1 Plan Administration. 
 
(a) Authority to control and manage the operation and administration of the Plan shall be vested in the Board of Directors (the
“Board”) for the Company, or a committee (“Committee”) thereof. The Board or Committee shall have all powers necessary to supervise the administration of the Plan and control its operations. 
 
(b) In addition to any powers and authority conferred
on the Board or Committee elsewhere in the Plan or by law, the Board or the Committee shall have the following powers and authority: 
 
(i) To designate agents to carry out responsibilities relating to the Plan; 
 
(ii) To administer, interpret, construe and apply
this Plan and to answer all questions which may arise or which may be raised under this Plan by a Participant, his beneficiary or any other person whatsoever; 
 
(iii) To establish rules and procedures from time to time for the conduct of its business and for the administration and
effectuation of its responsibilities under the Plan; and 
 
(iv) To perform or cause to be performed such further acts as it may deem to be necessary, appropriate, or convenient for the operation of the Plan. 
 
(c) Any action taken in good faith by the Board or Committee in the exercise of authority conferred
upon it by this Plan shall be conclusive and binding upon a Participant and his beneficiaries. All discretionary powers conferred upon the Board shall be absolute. 
 
 

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9.2
Limitation on Liability. No Employee of the Company nor member of the Board or Committee shall be subject to any liability with respect to his duties under the Plan unless the person acts fraudulently or in bad faith. To the extent
permitted by law, the Company shall indemnify each member of the Board or Committee, and any other Employee of the Company with duties under the Plan who was or is a party, or is threatened to be made a party, to any threatened, pending or completed
proceeding, whether civil, criminal, administrative, or investigative, by reason of the person’s conduct in the performance of his duties under the Plan. 
 
10. 
 
COMPANY STOCK 
 
10.1 Limitations on Purchase of Shares. Initially, the maximum number of shares of Company Stock that shall be made
available for sale under the Plan shall be 100,000 shares, subject to adjustment under Section 10.4 below. As of May 29, 1998, an additional 50,000 shares, subject to adjustment under Section 10.4 below were made available for sale under the Plan.
The shares of Company Stock to be sold to Participants under the Plan will be issued by the Company. As of May 27, 1999, an additional 50,000 shares will be made available under the Plan, subject to adjustment under Section 10.4 below. Effective on
the Amendment Date, an additional 200,000 shares will be made available under the Plan (bringing the total to 400,000 as of the Amendment Date), subject to adjustment under Section 10.4 below. If the total number of shares of Company Stock that
would otherwise be issuable pursuant to rights granted pursuant to Section 6.1 of the Plan at the Purchase Date exceeds the number of shares then available under the Plan, the Company shall make a pro rata allocation of the shares remaining
available in as uniform and equitable manner as is practicable. In such event, the Company shall give written notice of such reduction of the number of shares to each participant affected thereby and any unused payroll deductions shall be returned
to such participant if necessary.  
 
10.2 Company Stock. The Participant will have no interest or voting right in shares to be purchased under Section 6.1 of the Plan until such shares have been purchased. 
 
10.3 Registration of Company Stock.
Shares to be delivered to a Participant under the Plan will be registered in the name of the Participant unless designated otherwise by the Participant.  
 
10.4 Changes in Capitalization of the Company. Subject to any required action by the
stockholders of the Company, the number of shares of Company Stock covered by each right under the Plan which has not yet been exercised and the number of shares of Company Stock which have been authorized for issuance under the Plan but have not
yet been placed under rights or which have been returned to the Plan upon the cancellation of a right, as well as the Purchase Price per share of Company Stock covered by each right 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 Company Stock resulting from a stock split, stock dividend, spin-off, reorganization, recapitalization, merger, consolidation, exchange of shares or the like.
Such adjustment shall be made by the Board of Directors for the Company, whose determination in that respect shall be final, binding and conclusive. Except as expressly provided herein, no issue 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 Company Stock subject to any right granted hereunder. 
 
10.5 Merger of Company. In the event that
the Company at any time proposes to merge into, consolidate with or enter into any other reorganization pursuant to which the Company is not the surviving 

 

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entity (including the sale of substantially all of its assets or a “reverse” merger in which the Company is the surviving entity),
the Plan shall terminate, unless provision is made in writing in connection with such transaction for the continuance of the Plan and for the assumption of rights theretofore granted, or the substitution for such rights of new rights covering the
shares of a successor corporation, with appropriate adjustments as to number and kind of shares and prices, in which event the Plan and the rights theretofore granted or the new rights substituted therefor, shall continue in the manner and under the
terms so provided. If such provision is not made in such transaction for the continuance of the Plan and the assumption of rights theretofore granted or the substitution for such rights of new rights covering the shares of a successor corporation,
then the Board of Directors or its committee shall cause written notice of the proposed transaction to be given to the persons holding rights not less than 10 days prior to the anticipated effective date of the proposed transaction, and, concurrent
with the effective date of the proposed transaction, such rights shall be exercised automatically in accordance with Section 7.1 as if such effective date were a Purchase Date of the applicable Offering Period unless a Participant withdraws from the
Plan as provided in Section 8.1. 
 
11.

 
MISCELLANEOUS MATTERS

 
11.1 Amendment and
Termination. The Plan shall terminate ten (10) years after the Effective Date. Since future conditions affecting the Company cannot be anticipated or foreseen, the Company reserves the right to amend, modify, or terminate the Plan at any
time. Upon termination of the Plan, all benefits shall become payable immediately. Notwithstanding the foregoing, no such amendment or termination shall affect rights previously granted, nor may an amendment make any change in any right previously
granted which adversely affects the rights of any Participant. In addition, no amendment may be made without prior approval of the stockholders of the Company if such amendment would: 
 
(a) Increase the number of shares of Company Stock
that may be issued under the Plan; 
 
(b)
Materially modify the requirements as to eligibility for participation in the Plan; or 
 
(c) Materially increase the benefits which accrue to Participants under the Plan. 
 
11.2 Stockholder Approval. Continuance of the Plan and the effectiveness of any right granted hereunder shall be
subject to approval by the stockholders of the Company, within twelve months before or after the date the Plan is adopted by the Board. 
 
11.3 Benefits Not Alienable. Benefits under the Plan may not be assigned or alienated, whether voluntarily or
involuntarily. Any 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 in accordance with Article VIII. 
 
11.4 No Enlargement of Employee Rights.
This Plan is strictly a voluntary undertaking on the part of the Company and shall not be deemed to constitute a contract between the Company and any Employee or to be consideration for, or an inducement to, or a condition of, the employment of any
Employee. Nothing contained in the Plan shall be deemed to give the right to any Employee to be retained 

 

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in the employ of the Company or to interfere with the right of the Company to discharge any Employee at any time. 
 
11.5 Governing Law. To the extent not
preempted by Federal law, all legal questions pertaining to the Plan shall be determined in accordance with the laws of the State of Delaware. 
 
11.6 Non-business Days. When any act under the Plan is required to be performed on a day that falls on a Saturday,
Sunday or legal holiday, that act shall be performed on the next succeeding day which is not a Saturday, Sunday or legal holiday. Notwithstanding the above, Fair Market Value shall be determined in accordance with Section 6.3. 
 
11.7 Compliance With Securities Laws.
Notwithstanding any provision of the Plan, the Committee shall administer the Plan in such a way to ensure that the Plan at all times complies with any requirements of Federal Securities Laws. For example, affiliates may be required to make
irrevocable elections in accordance with the rules set forth under Section 16b-3 of the Securities Exchange Act of 1934. 
 

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