Document:

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                                   EXHIBIT 4.2

                          THIRD WAVE TECHNOLOGIES, INC.

                                 2000 STOCK PLAN

                             STOCK OPTION AGREEMENT

     Unless otherwise defined herein, the terms defined in the Third Wave
Technologies, Inc. 2000 Stock Plan (the "Plan") shall have the same defined
meanings in this Option Agreement (the "Agreement").

I.   NOTICE OF GRANT

     You have been granted an option to purchase shares of Common Stock of Third
Wave Technologies, Inc. (the "Company"), subject to the terms and conditions of
the Plan and this Agreement, as follows:

<TABLE>
<S>                                     <C>
Granted To:                             ________________________________________

Date of Grant                           ________________________________________

Exercise Price per Share                $_______________________________________

Total Number of Option Shares Granted   ________________________________________

Total Exercise Price                    $_______________________________________

Type of Option:                         ________________________________________

Term/Expiration Date:                   ________________________________________
</TABLE>

     Vesting Schedule: ______________

                        [Vesting Schedule to be inserted]

     Termination Period: ____________

     This Option may be exercised for the three-month period immediately
following the date the Optionee ceases to be a Service Provider. Upon the
Disability of the Optionee, this Option may be exercised for the twelve-month
period immediately following the date the Optionee ceases to be a Service
Provider. If termination of employment or service results from the death of the
Optionee, the personal representative of the Optionee's estate, or a person who
by bequest, inheritance or otherwise by reason of the Optionee's death, acquired
the right to exercise the Option, may exercise any Option at any time within the
three-year period immediately following the death of the Optionee. In no event
shall this Option be exercised later than the Term/Expiration Date as provided
above.

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II.  AGREEMENT

     A.   Grant of Option.

          The Plan Administrator of the Company hereby grants to the Optionee
named in the Notice of Grant attached as Part I of this Agreement (the
"Optionee") an option (the "Option") to purchase the number of Shares, as set
forth in the Notice of Grant, at the exercise price per share set forth in the
Notice of Grant (the "Exercise Price"), subject to the terms and conditions of
the Plan, which is incorporated herein by reference. By accepting this Option,
the Optionee hereby accepts the Option described in this Agreement, and agrees
to be bound by the terms of the Plan and this Agreement. The Optionee hereby
further accepts that all the decisions and determinations of the Plan
Administrator shall be final and binding. Subject to Section 15(c) of the Plan,
in the event of a conflict between the terms and conditions of the Plan and the
terms and conditions of this Option Agreement, the terms and conditions of the
Plan shall prevail.

          If designated in the Notice of Grant as an Incentive Stock Option
("ISO"), this Option is intended to qualify as an Incentive Stock Option under
Section 422 of the Code. However, if this Option is intended to be an Incentive
Stock Option, to the extent that it exceeds the $100,000 rule of Code Section
422(d) it shall be treated as a Nonstatutory Stock Option ("NSO").

     B.   Exercise of Option.

          (a) Right to Exercise. This Option is exercisable during its term in
accordance with the Vesting Schedule set out in the Notice of Grant and the
applicable provisions of the Plan and this Option Agreement. No exercise of an
Option may be for less than one full share. In no event shall the Corporation be
required to transfer fractional shares to the Optionee.

          (b) Method of Exercise. This Option is exercisable by delivery of
written or electronic notice of exercise (the "Exercise Notice") which shall
state the election to exercise the Option, the number of Shares in respect of
which the Option is being exercised (the "Exercised Shares"), and such other
representations and agreements as may be required by the Company pursuant to the
provisions of the Plan. The Exercise Notice shall be completed by the Optionee
and delivered to the Company-sponsored Stock Plan Service Provider, if
applicable, otherwise to Third Wave Technologies, Inc. The Exercise Notice
shall be accompanied by payment of the aggregate Exercise Price as to all
Exercised Shares. This Option shall be deemed to be exercised upon receipt by
the Company-sponsored Stock Plan Service Provider, if applicable, otherwise to
Third Wave Technologies, Inc. of such fully executed Exercise Notice accompanied
by such aggregate Exercise Price.

          No Shares shall be issued pursuant to the exercise of this Option
unless such issuance and exercise complies with Applicable Laws. Assuming such
compliance, for income tax purposes the Exercised Shares shall be considered
transferred to the Optionee on the date the Option is exercised with respect to
such Exercised Shares.

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     C.   Method of Payment.

          Payment of the aggregate Exercise Price shall be by any of the
following or a combination thereof, at the election of the Optionee:

          1. cash;

          2. check;

          3. in cash, on the T+3 settlement date (trade date plus three days)
that occurs after the exercise date specified in the notice of exercise,
provided that the Optionee exercises the Option through an irrevocable agreement
with a registered broker and the payment is made in accordance with procedures
permitted by Regulation T of the Federal Reserve Board and such procedures do
not violate applicable law; or

          4. surrender of other Shares which (i) in the case of Shares acquired
upon exercise of an option, have been owned by the Optionee for more than six
(6) months on the date of surrender, and (ii) have a Fair Market Value on the
date of surrender equal to the aggregate Exercise Price of the Exercised Shares.

     D.   Non-Transferability of Option.

          This Option may not be transferred in any manner otherwise than by
will or by the laws of descent or distribution and may be exercised during the
lifetime of Optionee only by the Optionee. The terms of the Plan and this Option
Agreement shall be binding upon the executors, administrators, heirs, successors
and assigns of the Optionee.

     E.   Term of Option.

          This Option may be exercised only within the term set out in the
Notice of Grant, and may be exercised during such term only in accordance with
the Plan and the terms of this Option Agreement.

     F.   Tax Consequences.

          Some of the federal tax consequences relating to this Option, as of
the date of this Option, are set forth below. THIS SUMMARY IS NECESSARILY
INCOMPLETE, AND THE TAX LAWS AND REGULATIONS ARE SUBJECT TO CHANGE. THE OPTIONEE
SHOULD CONSULT A TAX ADVISER BEFORE EXERCISING THIS OPTION OR DISPOSING OF THE
SHARES.

          1. Nonstatutory Stock Option. The Optionee may incur regular federal
income tax liability upon exercise of a NSO. The Optionee will be treated as
having received compensation income (taxable at ordinary income tax rates) equal
to the excess, if any, of the Fair Market Value of the Exercised Shares on the
date of exercise over their aggregate Exercise Price. If the Optionee is an
Employee or a former Employee, the Company will be required to withhold from his
or her compensation or collect from Optionee and pay to the applicable taxing
authorities an amount in cash equal to a percentage of this compensation income
at the time of

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exercise, and may refuse to honor the exercise and refuse to deliver Shares if
such withholding amounts are not delivered at the time of exercise.

          2. Incentive Stock Option. If this Option qualifies as an ISO, the
Optionee will have no regular federal income tax liability upon its exercise,
although the excess, if any, of the Fair Market Value of the Exercised Shares on
the date of exercise over their aggregate Exercise Price will be treated as an
adjustment to alternative minimum taxable income for federal tax purposes and
may subject the Optionee to alternative minimum tax in the year of exercise. In
the event that the Optionee ceases to be an Employee but remains a Service
Provider, any Incentive Stock Option of the Optionee that remains unexercised
shall cease to qualify as an Incentive Stock Option and will be treated for tax
purposes as a Nonstatutory Stock Option on the date three (3) months and one (1)
day following such change of status.

          3. Disposition of Shares.

               (a) NSO. If the Optionee holds NSO Shares for at least one year
after exercise, any gain realized on disposition of the Shares will be treated
as long-term capital gain for federal income tax purposes.

               (b) ISO. If the Optionee holds ISO Shares for at least one year
after exercise and two years after the grant date, any gain realized on
disposition of the Shares will be treated as long-term capital gain for federal
income tax purposes. If the Optionee disposes of ISO Shares within one year
after exercise or two years after the grant date, any gain realized on such
disposition will be treated as compensation income (taxable at ordinary income
rates) to the extent of the excess, if any, of the lesser of (A) the difference
between the Fair Market Value of the Shares acquired on the date of exercise and
the aggregate Exercise Price, or (B) the difference between the sale price of
such Shares and the aggregate Exercise Price. Any additional gain will be taxed
as capital gain, short-term or long-term depending on the period that the ISO
Shares were held.

               (c) Notice of Disqualifying Disposition of ISO Shares. If the
Optionee sells or otherwise disposes of any of the Shares acquired pursuant to
an ISO on or before the later of (i) two years after the grant date, or (ii) one
year after the exercise date, the Optionee shall immediately notify the Company
in writing of such disposition. The Optionee agrees that he or she may be
subject to income tax withholding by the Company on the compensation income
recognized from such early disposition of ISO Shares by payment in cash or out
of the current earnings paid to the Optionee.

     G.   Data Privacy.

          By entering into this Agreement, the Optionee: (i) authorizes the
Company and any agent of the Company administering the Plan or providing Plan
recordkeeping services, to disclose to the Company such information and data as
the Company shall request in order to facilitate administration of the Plan;
(ii) waives any data privacy rights he or she may have with respect to such
information; and (iii) authorizes the Company to store and transmit such
information in electronic form.

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     H.   Entire Agreement; Governing Law.

          The Plan is incorporated herein by reference. The Plan and this Option
Agreement constitute the entire agreement of the parties with respect to the
subject matter hereof and supersede in their entirety all prior undertakings and
agreements of the Company and Optionee with respect to the subject matter
hereof, and may not be modified adversely to the Optionee's interest except by
means of a writing signed by the Company and Optionee. This agreement is
governed by the internal substantive laws, but not the choice of law rules, of
the State of Wisconsin.

     I.   NO GUARANTEE OF CONTINUED SERVICE.

          OPTIONEE ACKNOWLEDGES AND AGREES THAT THE VESTING OF SHARES PURSUANT
TO THE VESTING SCHEDULE HEREOF IS EARNED ONLY BY CONTINUING AS A SERVICE
PROVIDER AT THE WILL OF THE COMPANY (AND NOT THROUGH THE ACT OF BEING HIRED,
BEING GRANTED AN OPTION OR PURCHASING SHARES HEREUNDER). OPTIONEE FURTHER
ACKNOWLEDGES AND AGREES THAT THIS AGREEMENT, THE TRANSACTIONS CONTEMPLATED
HEREUNDER AND THE VESTING SCHEDULE SET FORTH HEREIN DO NOT CONSTITUTE AN EXPRESS
OR IMPLIED PROMISE OF CONTINUED ENGAGEMENT AS A SERVICE PROVIDER FOR THE VESTING
PERIOD, FOR ANY PERIOD, OR AT ALL, AND SHALL NOT INTERFERE WITH OPTIONEE'S RIGHT
OR THE COMPANY'S RIGHT TO TERMINATE OPTIONEE'S RELATIONSHIP AS A SERVICE
PROVIDER AT ANY TIME, WITH OR WITHOUT CAUSE.

     By your signature and the signature of the Company's representative below,
you and the Company agree that this Option is granted under and governed by the
terms and conditions of the Plan and this Option Agreement. Optionee has
reviewed the Plan and this Option Agreement in their entirety, has had an
opportunity to obtain the advice of counsel prior to executing this Option
Agreement and fully understands all provisions of the Plan and Option Agreement.
Optionee hereby agrees to accept as binding, conclusive and final all decisions
or interpretations of the Administrator upon any questions relating to the Plan
and Option Agreement. Optionee further agrees to notify the Company upon any
change in the residence address indicated below.

OPTIONEE:                               THIRD WAVE TECHNOLOGIES, INC.

-------------------------------------   ----------------------------------------
Signature                               [Insert Name]
                                        President and Chief Executive Officer
-------------------------------------
Print Name

-------------------------------------
Residence Address

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                                       5<PAGE>

                                   EXHIBIT 4.3

                          THIRD WAVE TECHNOLOGIES, INC.

                                 2000 STOCK PLAN

                       RESTRICTED STOCK PURCHASE AGREEMENT

     Unless otherwise defined herein, the terms defined in the Third Wave
Technologies, Inc. 2000 Stock Plan (the "Plan") shall have the same defined
meanings in this Restricted Stock Purchase Agreement (the "Agreement").

I.   NOTICE OF GRANT

     You have been granted the right to purchase shares of Common Stock
("Shares") of Third Wave Technologies, Inc. (the "Company"), subject to the
terms and conditions of the Plan and this Agreement, as follows:

Right to Purchase Granted To:      ____________________________(the "Purchaser")

Date of Grant                      _____________________________________________

Type of Grant                      Restricted Stock Units ("RSUs")

Total Number of RSUs Purchasable   _____________________________________________

Purchase Price per Share           $.001

Total Purchase Price               $____________________________________________

Vesting Schedule:

                        [Vesting Schedule to be inserted]

II.  AGREEMENT

     A.   Grant of Right to Purchase Restricted Stock Units.

          The Plan Administrator of the Company hereby grants to the Purchaser
named in the Notice of Grant attached as Part I of this Agreement (the
"Purchaser") the right to purchase Shares, as set forth in the Notice of Grant,
at the purchase price per share set forth in the Notice

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of Grant, subject to the terms and conditions of the Plan, which is herein
incorporated by reference. By accepting the RSUs, the Purchaser hereby accepts
the RSUs described in this Agreement, and agrees to be bound by the terms of the
Plan and this Agreement. The Purchaser hereby further agrees that all the
decisions and determinations of the Plan Administrator shall be final and
binding. Subject to 15(c) of the Plan, in the event of a conflict between the
terms and conditions of the Plan and the terms and conditions of this Agreement,
the terms and conditions of the Plan shall prevail.

     B.   Purchase Price of Restricted Stock Units.

          Purchaser will make payment for the Shares delivered upon vesting of
the RSUs based on the Purchase Price per Share as set forth in the Notice of
Grant. Payment can be made by check or payroll deduction. If Purchaser is an
Employee, Purchaser agrees, by signing this Agreement, to have the Purchase
Price deducted from his or her next paycheck at the time of vesting.

     C.   Restricted Stock Unit Account.

          RSUs represent hypothetical shares of Company common stock on a
one-for-one basis, and are not actual shares of stock. The Company shall
establish and maintain a RSU account, as a bookkeeping account on its records,
for the Purchaser and shall record in such account the number of RSUs granted to
the Purchaser. No shares of stock shall be issued to the Purchaser at the time
the award is made, and the Purchaser shall not be, nor have any of the rights or
privileges of, a stockholder of the Company with respect to any RSUs recorded in
the account. The Purchaser shall not have the right to receive any dividends or
other distributions with respect to hypothetical shares of stock recorded in the
RSU account. The Purchaser shall not have any interest in any fund or specific
assets of the Company by reason of this award or the RSU account established for
the Purchaser.

     D.   Delivery of Shares.

          When the RSUs vest (i.e., the restrictions have lapsed), the Company
will issue to the Purchaser, or the person entitled to receive them in the event
of the Purchaser's death, one Share for each vested RSU, subject to Purchaser's
paying the purchase price for the RSUs as described in Section B and Purchaser's
tax withholding obligations as described in Section E below; provided that in no
event shall payment be made later than March 15 of the calendar year following
the calendar year in which the RSUs vest. Neither the Purchaser, nor the person
entitled to receive delivery of the Shares in the event of the Purchaser's
death, shall have any of the rights and privileges of a stockholder with respect
to shares of Company common stock, until certificates for shares have been
issued or deposited into Purchaser's brokerage account.

          The obligation of the Company to deliver Shares shall also be subject
to the condition that if at any time the Administrator shall determine in its
discretion that the listing, registration or qualification of the shares upon
any securities exchange or under any state or federal law, or the consent or
approval of any governmental regulatory body is necessary or desirable as a
condition of, or in connection with, the issue of Shares, the Shares may not be

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issued in whole or in part unless such listing, registration, qualification,
consent or approval shall have been effected or obtained free of any conditions
not acceptable to the Administrator. The issuance of Shares to Purchaser
pursuant to this Agreement is subject to any applicable taxes and other laws or
regulations of the United States or of any state having jurisdiction thereof.

     E.   Taxes.

          All obligations of the Company under this Agreement shall be subject
to the rights of the Company to withhold amounts required to be withheld for any
taxes, if applicable. The Purchaser may elect to satisfy any tax withholding
obligation by having Shares withheld up to an amount that does not exceed the
minimum applicable tax withholding or pay it in cash.

     F.   Termination of RSUs.

          If the Purchaser ceases to be a Service Provider for any reason before
the RSUs vest, any unvested RSUs shall automatically terminate and shall be
forfeited as of the date the Purchaser ceases to be a Service Provider and the
Purchaser will have no future rights with respect to any unvested RSUs.

     G.   Data Privacy.

          By entering into this Agreement, the Purchaser: (i) authorizes the
Company and any agent of the Company administering the Plan or providing Plan
recordkeeping services, to disclose to the Company such information and data as
the Company shall request in order to facilitate administration of the Plan;
(ii) waives any data privacy rights he or she may have with respect to such
information; and (iii) authorizes the Company to store and transmit such
information in electronic form.

     H.   Adjustments Upon Change in Capitalization, Dissolution, Merger or
          Asset Sale.

          The provisions in Section 13 of the Plan shall apply to the RSUs, and,
in the event of a change in capitalization of the Company, dissolution, merger
or asset sale, the Board may take such actions as it deems appropriate pursuant
to Section 13 of the Plan.

     I.   Grant Subject to Plan Provisions.

          This grant is made pursuant to the Plan, the terms of which are
incorporated herein by reference, and in all respects shall be interpreted in
accordance with the Plan. The grant and delivery of the RSUs are subject to
interpretations, regulations and determinations concerning the Plan established
from time to time by the Administrator in accordance with the provisions of the
Plan, including, but not limited to, provisions pertaining to (a) rights and
obligations with respect to withholding taxes, (b) the registration,
qualification or listing of the shares issued under the Plan, (c) changes in
capitalization of the Company and (d) other requirements of applicable law. The
Administrator shall have the authority to interpret and construe the RSUs
pursuant to the terms of the Plan, and the Purchaser agrees that the
Administrator's decisions shall be conclusive as to any questions arising
hereunder.

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     J.   Assignment and Transfers.

          Except as the Administrator may otherwise permit pursuant to the Plan,
the rights and interests of the Purchaser under this Agreement may not be sold,
assigned, encumbered or otherwise transferred except, in the event of the death
of the Purchaser, by will or by the laws of descent and distribution. In the
event of any attempt by the Purchaser to alienate, assign, pledge, hypothecate,
or otherwise dispose of the RSUs or any right hereunder, except as provided for
in this Agreement, or in the event of the levy or any attachment, execution or
similar process upon the rights or interests hereby conferred, the Company may
terminate the RSUs by notice to the Purchaser, and the RSUs and all rights
hereunder shall thereupon become null and void. The rights and protections of
the Company hereunder shall extend to any successors or assigns of the Company
and to the Company's parents, subsidiaries, and affiliates. This Agreement may
be assigned by the Company without the Purchaser's consent.

     K.   Applicable Law.

          The validity, construction, interpretation and effect of this
instrument shall be governed by and construed in accordance with the laws of the
State of Wisconsin, without giving effect to the conflicts of laws provisions
thereof. In addition, to the extent any payment under this Agreement is deemed
to be deferred compensation subject to the requirements of section 409A of the
Internal Revenue Code of 1986, as amended (the "Code"), this Agreement shall be
administered so that such payments will be made in accordance with the
requirements of section 409A of the Code.

     L.   NO GUARANTEE OF CONTINUED SERVICE.

          PURCHASER ACKNOWLEDGES AND AGREES THAT THE VESTING OF RSUS PURSUANT TO
THE VESTING SCHEDULE HEREOF IS EARNED ONLY BY CONTINUING AS A SERVICE PROVIDER
AT THE WILL OF THE COMPANY (AND NOT THROUGH THE ACT OF BEING HIRED, BEING
GRANTED AN RSU OR PURCHASING SHARES HEREUNDER). PURCHASER FURTHER ACKNOWLEDGES
AND AGREES THAT THIS AGREEMENT, THE TRANSACTIONS CONTEMPLATED HEREUNDER AND THE
VESTING SCHEDULE SET FORTH HEREIN DO NOT CONSTITUTE AN EXPRESS OR IMPLIED
PROMISE OF CONTINUED ENGAGEMENT AS A SERVICE PROVIDER FOR THE VESTING PERIOD,
FOR ANY PERIOD, OR AT ALL, AND SHALL NOT INTERFERE WITH PURCHASER'S RIGHT OR THE
COMPANY'S RIGHT TO TERMINATE PURCHASER'S RELATIONSHIP AS A SERVICE PROVIDER AT
ANY TIME, WITH OR WITHOUT CAUSE.

          By your signature and the signature of the Company's representative
below, you accept the award of the RSUs described in this Agreement and you and
the Company agree that this RSU is granted under and governed by the terms and
conditions of the Plan and this Agreement. Purchaser has reviewed the Plan and
this Agreement in their entirety, has had an opportunity to obtain the advice of
counsel prior to executing this Agreement and fully

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understands all provisions of the Plan and Agreement. Purchaser hereby agrees to
accept as binding, conclusive and final all decisions or interpretations of the
Administrator upon any questions relating to the Plan and this Agreement.
Purchaser further agrees to notify the Company upon any change in the residence
address indicated below.

PURCHASER:                              THIRD WAVE TECHNOLOGIES, INC.

-------------------------------------   ----------------------------------------
Signature                               [Insert Name]
                                        President and Chief Executive Officer
-------------------------------------
Print Name

-------------------------------------
Residence Address

-------------------------------------

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