Document:

EXHIBIT 4.7
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                          REGISTRATION RIGHTS AGREEMENT

                  THIS REGISTRATION RIGHTS AGREEMENT, dated as of November 29,
2000 (this "Agreement"), is made by and between DYNAGEN, INC. a Delaware
corporation, with headquarters located at Suite 2700, 1000 Winter Street,
Waltham, MA 02451 (the "Company"), and the entity named on a signature page
hereto ( "Initial Investor").

                              W I T N E S S E T H:

                  WHEREAS, upon the terms and subject to the conditions of the
Securities Purchase Agreement, dated as of November 29, 2000, between the
Initial Investor and the Company (the "Securities Purchase Agreement;" terms not
otherwise defined herein shall have the meanings ascribed to them in the
Securities Purchase Agreement), the Company has agreed to issue and sell to the
Initial Investor shares of Series N Preferred Stock of the Company having the
aggregate stated value set forth on the signature page of the Securities
Purchase Agreement (the "Preferred Stock"); and

                  WHEREAS, the Preferred Stock (which term, for purposes of this
Agreement, shall include Periodic Amount Shares, as defined below) is
convertible into shares of Common Stock (the "Conversion Shares"); upon the
terms and subject to the conditions contained in the Certificate of
Designations; and

                  WHEREAS, to induce the Initial Investor to execute and deliver
the Securities Purchase Agreement, the Company has agreed to provide certain
registration rights under the Securities Act of 1933, as amended, and the rules
and regulations thereunder, or any similar successor statute (collectively, the
"Securities Act"), with respect to the Conversion Shares.

                  NOW, THEREFORE, in consideration of the premises and the
mutual covenants contained herein and other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the Company and the
Initial Investor hereby agree as follows:

                  1. DEFINITIONS. As used in this Agreement, the following terms
shall have the following meanings:

                  (a) "Investor" means the Initial Investor and any permitted
transferee or assignee who agrees to become bound by the provisions of this
Agreement in accordance with Section 9 hereof and who holds Preferred Stock, or
Registrable Securities.

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                  (b) "Potential Material Event" means any of the following: (i)
the possession by the Company of material information not ripe for disclosure in
a registration statement, which shall be evidenced by determinations in good
faith by the Board of Directors of the Company that disclosure of such
information in the registration statement would be detrimental to the business
and affairs of the Company; or (ii) any material engagement or activity by the
Company which would, in the good faith determination of the Board of Directors
of the Company, be adversely affected by disclosure in a registration statement
at such time, which determination shall be accompanied by a good faith
determination by the Board of Directors of the Company that the registration
statement would be materially misleading absent the inclusion of such
information.

                  (c) "Register," "Registered," and "Registration" refer to a
registration effected by preparing and filing a Registration Statement or
Statements in compliance with the Securities Act and pursuant to Rule 415 under
the Securities Act or any successor rule providing for offering securities on a
continuous basis ("Rule 415"), and the declaration or ordering of effectiveness
of such Registration Statement by the United States Securities and Exchange
Commission (the "SEC").

                  (d) "Registrable Securities" means the Conversion Shares.

                  (e) "Registration Statement" means a registration statement of
the Company under the Securities Act covering Registrable Securities on Form
S-3, if the Company is then eligible to file using such form, and if not
eligible, on Form SB-2 or other appropriate form.

                  (f) "Required Effective Date" means the relevant Initial
Required Effective Date or Increased Required Effective Date (as those terms are
defined below).

                  2. REGISTRATION.

                  (A) MANDATORY REGISTRATION.

                  (i) The Company shall prepare and file with the SEC, as soon
as possible after the Closing Date but no later than sixty (60) days after the
Closing Date (the "Required Filing Date"), either a Registration Statement or an
amendment to an existing Registration Statement, in either event registering for
resale by the Investor (i) a sufficient number of shares of Common Stock for the
Initial Investors to sell the Registrable Securities, but in no event less than
the number of shares equal to the sum of one hundred and fifty percent (150%) of
the number of shares into which the Preferred Stock, through the third
anniversary of their issuance, would be convertible at the time of filing of
such Registration Statement (assuming for such purposes that all shares of
Preferred Stock had been eligible to be converted, and had been converted, into
Conversion Shares in accordance with their terms, whether or not such issuance,
eligibility or conversion had in fact occurred as of such date) and (ii) a
sufficient number of shares of Common Stock for the Initial Investors to sell
Registrable Securities issuable upon the occurrence of reasonably expected
penalties. The Registration Statement (W) shall include only the Registrable
Securities, unless the

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Investor consents to the inclusion of other shares of the Company's capital
stock, and (X) shall also state that, in accordance with Rule 416 and 457 under
the Securities Act, it also covers such indeterminate number of additional
shares of Common Stock as may become issuable upon conversion of the Preferred
Stock to prevent dilution resulting from stock splits, or stock dividends. The
Company will use its reasonable best efforts to cause such Registration
Statement to be declared effective on a date (the "Initial Required Effective
Date") which is no later than the earlier of (Y) five (5) days after oral or
written notice by the SEC that it may be declared effective or (Z) one hundred
and twenty (120) days after the Closing Date.

                  (ii) If at any time (an "Increased Registered Shares Date"),
the number of shares of Common Stock represented by the Registrable Shares,
issued or to be issued as contemplated by the Transaction Agreements, exceeds
eighty percent (80%) of the aggregate number of shares of Common Stock then
registered, whether or not such Registration Statement is effective, then within
ten (10) days after the Increased Registered Shares Date, the Company shall
either (X) amend the relevant Registration Statement ("Increased Shares
Amendment") filed by the Company pursuant to the preceding provisions of this
Section 2, if such Registration Statement has not been declared effective by the
SEC at that time, (the "Required Increased Shares Amendment Filing Date") to
register, in the aggregate, at least the number of shares (the "Increased Shares
Amount") equal to (I) the number of shares theretofore issued on conversion of
the Preferred Stock plus (II) one hundred and fifty percent (150%) of the number
of shares into which the unconverted Preferred Stock, through the thirty-six
(36) month anniversary of the Closing Date, would be convertible at the date of
such filing (assuming for such purposes that all such shares of Preferred Stock
had been issued, had been eligible to be converted, and had been converted into
Conversion Shares in accordance with their terms, whether or not such issuance,
accrual of dividends, eligibility or conversion had in fact occurred as of such
date), or (Y) if such Registration Statement has been declared effective by the
SEC at that time, file with the SEC an additional Registration Statement (an
"Additional Registration Statement"), (the "Required Additional Registration
Filing Date") to register the number of shares equal to the excess of the
Increased Shares Amount over the aggregate number of shares of Common Stock
already registered. The Company will use its reasonable best efforts to cause
such Increased Shares Amendment or the Additional Registration Statement to be
declared effective on a date (each, an "Increased Required Effective Date")
which is no later than (Q) with respect to a Registration Statement under clause
(X) of this subparagraph (ii), the Initial Required Effective Date and (R) with
respect to an Additional Registration Statement, the earlier of (I) five (5)
days after notice by the SEC that it may be declared effective or (II) thirty
(30) days after the Required Additional Registration Filing Date.

                  (B) PAYMENTS BY THE COMPANY.

                  (i) If (a) the Registration Statement covering the Registrable
Securities is not filed by the Required Filing Date, (b) the Increased Shares
Amendment is not filed by the Required Increased Shares Amendment Filing Date,
(c) the Additional Registration Statement is not filed by the Required
Additional Registration Filing Date, (d) the Registration Statement is not
declared

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effective by sixty (60) days after the Initial Required Effective Date, (e) the
Increased Shares Amendment and/or the Additional Registration Statement are not
declared effective by the Increased Required Effective Date, or (f) the Investor
is restricted from making sales of Registrable Securities covered by any
previously effective Registration Statement at any time (the date such
restriction commences, a "Restricted Sale Date") after the relevant Effective
Date other than during a Permitted Suspension Period (as defined below), or if
the Company's Common Stock is delisted (each a "Periodic Amount Default Date")
then the Company will make payments to the Initial Investor in such amounts and
at such times as shall be determined pursuant to this Section 2(b).

                  (ii) The amount (the "Periodic Amount") to be paid by the
Company to the Initial Investor shall be determined as of each Computation Date
(as defined below) and such amount shall be equal to the Periodic Amount
Percentage (as defined below) of the Purchase Price for all Preferred Stock, for
the period from any Periodic Amount Default Date each as set out in Section
2(b)(i) above as the case may be, to the first relevant Computation Date, and
thereafter to each subsequent Computation Date. The Periodic Amount shall be pro
rated for periods between Computation Dates of less than thirty (30) days. The
"Periodic Amount Percentage" means (A) two percent (2%) of the Purchase Price of
all Preferred Stock for each thirty (30) day period beginning on the date which
is 180 days after the Closing Date during which the Effective Statement is not
effective; and (B) two percent (2%) of the Purchase Price of all Preferred Stock
for each thirty (30) day period commencing on any of the Periodic Amount Default
Dates as the case may be, during which the relevant Registration Statement is
either not filed or not effective. Notwithstanding the provisions of the
previous sentence, the Periodic Amount Percentage for the first two Computation
Dates as regards the Initial Required Effective Date shall be 1.5%, and
thereafter 2%. Anything in the preceding provisions of this paragraph (ii) to
the contrary notwithstanding, after the Effective Date the Purchase Price for
such Preferred Stock shall be deemed to refer to the sum of (X) the principal
amount of all Preferred Stock not yet converted and (Y) the Held Shares Value
(as defined below). The "Held Shares Value" means, for shares acquired by the
Investor upon a conversion within the thirty (30) days preceding the Restricted
Sale Date, but not yet sold by the Investor, the principal amount of the
Preferred Stock converted into such Conversion Shares; provided, however, that
if the Investor effected more than one conversion during such thirty (30) day
period and sold less than all of such shares, the sold shares shall be deemed to
be derived first from the conversions in the sequence of such conversions (that
is, for example, until the number of shares from the first of such conversions
have been sold, all shares shall be deemed to be from the first conversion;
thereafter, from the second conversion until all such shares are sold).

                  (iii) Each Periodic Amount will be payable by the Company,
except as provided in the other provisions of this subparagraph (iii), in
additional shares of Series N Preferred Stock of the Company (which shares shall
have the rights of the Series N Preferred Stock contained in the Certificate of
Designations) having an aggregate stated value equal to 88% of the Periodic
Amount payable to the Investor ( the "Periodic Amount Shares") (1) within five
(5) business days after (a) the Required Filing Date, (b) the Required Increased
Shares Amendment Filing Date, (c) the Required Additional Registration Filing
Date, (d) the Initial Required Effective Date (e) the

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Increased Required Effective Date, as the case may be, and (2) on the earlier of
(A) each thirtieth day thereafter, (B) the third business day after the date the
Registration Statement and/or the Required Increased Shares Amendment and/or the
Additional Registration Statement is filed, or is declared effective, or (C) the
third business day after the Registration Statement and/or the Required
Increased Shares Amendment and/or the Additional Registration Statement has its
restrictions removed after the Initial Required Effective Date and/or the
Increased Required Effective Date, as the case may be, in each case without
requiring demand therefor by the Investor.

                  (iv) The parties acknowledge that the damages which may be
incurred by the Investor if (a) the Registration Statement, the Required
Increased Shares Amendment, or the Additional Registration Statement is not
filed by the Required Filing Date, or (b) the Registration Statement has not
been declared effective by the Initial Required Effective Date or the Increased
Required Effective Date, including if the right to sell Registrable Securities
under a previously effective Registration Statement is suspended, may be
difficult to ascertain. The parties agree that the Periodic Amounts represent a
reasonable estimate on the part of the parties, as of the date of this
Agreement, of the amount of such damages.

                  (v) Notwithstanding the foregoing, the amounts payable by the
Company pursuant to this provision shall not be payable (a) to the extent any
delay in the effectiveness of the Registration Statement occurs because of an
act of, or a failure to act or to act timely by the Initial Investor or its
counsel, (b) in the event all of the Registrable Securities may be sold pursuant
to Rule 144 or another available exemption under the Act without volume or other
restrictions or limits or (c) with respect to a Permitted Suspension Period.

                  (vi) "Computation Date" means (A) the date which is the
earlier of (1) thirty (30) days after, (a) the Required Filing Date, (b) the
Required Increased Shares Amendment Filing Date , (c) the Required Additional
Registration Filing Date, (d) the Initial Required Effective Date, (e) the
Increased Required Effective Date and (f) a Restricted Sale Date, as the case
may be, or (2) the date after, (a) the Required Filing Date, (b) the Required
Increased Shares Amendment Filing Date, (c) the Required Additional Registration
Filing Date (d) the Initial Required Effective Date, (e) the Increased Required
Effective Date and (f) a Restricted Sale Date, on which the Registration
Statement, the Required Increased Shares Amendment, or the Additional
Registration Statement is filed (with respect to payments due as contemplated by
Section 2(b)(i) hereof) or is declared effective or has its restrictions removed
(with respect to payments due as contemplated by Section 2(b)(ii) hereof), as
the case may be, and (B) each date which is the earlier of (1) thirty (30) days
after the previous Computation Date or (2) the date after the previous
Computation Date on which, (a) the Registration Statement (b) the Required
Increased Shares Amendment or (c) the Additional Registration Statement is filed
(with respect to payments due as contemplated by Section 2(b)(i) hereof) or is
declared effective or has its restrictions removed (with respect to payments due
as contemplated by Section 2(b)(ii) hereof), as the case may be.

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                  3. OBLIGATIONS OF THE COMPANY. In connection with the
registration of the Registrable Securities, the Company shall do each of the
following:

                  (a) Prepare and file with the SEC by the Required Filing Date
a Registration Statement with respect to not less than the number of Registrable
Securities provided in Section 2(a) above, and thereafter use commercially
reasonable efforts to cause such Registration Statement relating to Registrable
Securities to become effective by the Required Effective Date and keep the
Registration Statement effective at all times during the period (the
"Registration Period") continuing until the earliest of (i) the date that is
three (3) years after the last day of the calendar month following the month in
which the relevant Effective Date occurs, (ii) the date when the Investors may
sell all Registrable Securities under Rule 144(k), without volume or other
restrictions or limits, or (iii) the date the Investors no longer own any of the
Registrable Securities, which Registration Statement (including any amendments
or supplements thereto and prospectuses contained therein) shall not contain any
untrue statement of a material fact or omit to state a material fact required to
be stated therein or necessary to make the statements therein, in light of the
circumstances in which they were made, not misleading;

                  (b) Prepare and file with the SEC such amendments (including
post-effective amendments) and supplements to the Registration Statement and the
prospectus used in connection with the Registration Statement as may be
necessary to keep the Registration Statement effective at all times during the
Registration Period, and, during the Registration Period, comply with the
provisions of the Securities Act with respect to the disposition of all
Registrable Securities of the Company covered by the Registration Statement
until such time as all of such Registrable Securities have been disposed of in
accordance with the intended methods of disposition by the seller or sellers
thereof as set forth in the Registration Statement;

                  (c) Permit a single firm of counsel designated by the Initial
Investors to review the Registration Statement and all amendments and
supplements thereto a reasonable period of time (but not less than three (3)
business days) prior to their filing with the SEC, and not file the Registration
Statement or any amendment or supplement thereto in a form to which such counsel
reasonably objects;

                  (d) Notify each Investor and such Investor's legal counsel
identified to the Company and which has requested by written notice to the
Company that it receive such notification (which, until further notice, shall be
deemed to be Krieger & Prager LLP, Attn: Samuel Krieger, Esq., which firm has
requested to receive such notification; each, an "Investor's Counsel"), and any
managing underwriters immediately (and, in the case of (i)(A) below, not less
than three (3) business days prior to such filing) and (if requested by any such
person) confirm such notice in writing no later than one (1) business day
following the day (i)(A) when a prospectus or any prospectus supplement or post-
effective amendment to the Registration Statement is proposed to be filed; (B)
whenever the SEC notifies the Company whether there will be a "review" of such
Registration Statement; (C) whenever the Company receives (or a representative
of the Company receives on its behalf) any oral or written

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comments from the SEC in respect of a Registration Statement (copies or, in the
case of oral comments, summaries of such comments shall be promptly furnished by
the Company to the Investors); and (D) with respect to the Registration
Statement or any post-effective amendment, when the same has become effective;
(ii) of any request by the SEC or any other Federal or state governmental
authority for amendments or supplements to the Registration Statement or
prospectus or for additional information; (iii) of the issuance by the SEC of
any stop order suspending the effectiveness of the Registration Statement
covering any or all of the Registrable Securities or the initiation of any
proceedings for that purpose; (iv) if at any time any of the representations or
warranties of the Company contained in any agreement (including any underwriting
agreement) contemplated hereby ceases to be true and correct in all material
respects; (v) of the receipt by the Company of any notification with respect to
the suspension of the qualification or exemption from qualification of any of
the Registrable Securities for sale in any jurisdiction, or the initiation or
threatening of any proceeding for such purpose; and (vi) of the occurrence of
any event that to the best knowledge of the Company makes any statement made in
the Registration Statement or prospectus or any document incorporated or deemed
to be incorporated therein by reference untrue in any material respect or that
requires any revisions to the Registration Statement, prospectus or other
documents so that, in the case of the Registration Statement or the prospectus,
as the case may be, it will not contain any untrue statement of a material fact
or omit to state any material fact required to be stated therein or necessary to
make the statements therein, in light of the circumstances under which they were
made, not misleading. In addition, the Company shall furnish the Investor's
Counsel with copies of all intended written responses to the comments
contemplated in clause (C) of this Section 3(d) not later than one (1) business
day in advance of the filing of such responses with the SEC so that the
Investors shall have the opportunity to comment thereon;

                  (e) Furnish to each Investor and such Investor's Counsel (i)
promptly after the same is prepared and publicly distributed, filed with the
SEC, or received by the Company, one (1) copy of the Registration Statement,
each preliminary prospectus and prospectus, and each amendment or supplement
thereto, and (ii) such number of copies of a prospectus, and all amendments and
supplements thereto and such other documents, as such Investor may reasonably
request in order to facilitate the disposition of the Registrable Securities
owned by such Investor;

                  (f) As promptly as practicable after becoming aware thereof,
notify each Investor of the happening of any event of which the Company has
knowledge, as a result of which the prospectus included in the Registration
Statement, as then in effect, includes an untrue statement of a material fact or
omits to state a material fact required to be stated therein or necessary to
make the statements therein, in light of the circumstances under which they were
made, not misleading, and use its best efforts promptly to prepare a supplement
or amendment to the Registration Statement or other appropriate filing with the
SEC to correct such untrue statement or omission, and deliver a number of copies
of such supplement or amendment to each Investor as such Investor may reasonably
request;

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                  (g) As promptly as practicable after becoming aware thereof,
notify each Investor who holds Registrable Securities being sold (or, in the
event of an underwritten offering, the managing underwriters) of the issuance by
the SEC of a Notice of Effectiveness or any notice of effectiveness or any stop
order or other suspension of the effectiveness of the Registration Statement at
the earliest possible time;

                  (h) Notwithstanding the foregoing, if at any time or from time
to time after the date of effectiveness of the Registration Statement, the
Company notifies the Investors in writing of the existence of a Potential
Material Event, the Investors shall not offer or sell any Registrable
Securities, or engage in any other transaction involving or relating to the
Registrable Securities, from the time of the giving of notice with respect to a
Potential Material Event until such Investor receives written notice from the
Company that such Potential Material Event either has been disclosed to the
public or no longer constitutes a Potential Material Event; provided, however,
that the Company may not so suspend the right to such holders of Registrable
Securities during the periods the Registration Statement is required to be in
effect other than during a Permitted Suspension Period (and the applicable
provisions of Section 2(b) shall apply with respect to any such suspension other
than during a Permitted Suspension Period) . The term "Permitted Suspension
Period" means up to two such suspension periods during any consecutive 12-month
period, each of which suspension period shall not either (i) be for more than
ten (10) days or (ii) begin less than ten (10) business days after the last day
of the preceding suspension (whether or not such last day was during or after a
Permitted Suspension Period); provided further that the Company shall, if lawful
to do so, provide the Investor with at least two (2) business days' notice of
the existence (but not the substance of) a Potential Material Event;

                  (i) Use its reasonable efforts to secure and maintain the
designation of all the Registrable Securities covered by the Registration
Statement on the "Nasdaq/Bulletin Board Market" of the National Association of
Securities Dealers Automated Quotations System ("NASDAQ") within the meaning of
Rule 11Aa2-1 of the SEC under the Securities Exchange Act of 1934, as amended
(the "Exchange Act"), and the quotation of the Registrable Securities on The
Nasdaq/Bulletin Board Market; and, without limiting the generality of the
foregoing, to use commercially reasonable efforts to arrange for at least two
market makers to register with the National Association of Securities Dealers,
Inc. as such with respect to such Registrable Securities;

                  (j) Provide a transfer agent and registrar, which may be a
single entity, for the Registrable Securities not later than the effective date
of the Registration Statement;

                  (k) Cooperate with the Investors who hold Registrable
Securities being offered to facilitate the timely preparation and delivery of
certificates for the Registrable Securities to be offered pursuant to the
Registration Statement and enable such certificates for the Registrable
Securities to be in such denominations or amounts as the case may be, as the
Investors may reasonably request, and, within five (5) business days after a
Registration Statement which includes Registrable Securities is ordered
effective by the SEC, the Company shall deliver, and shall cause

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legal counsel selected by the Company to deliver, to the transfer agent for the
Registrable Securities (with copies to the Investors whose Registrable
Securities are included in such Registration Statement) an appropriate
instruction and opinion of such counsel; and

                  (l) Take all other reasonable actions necessary to expedite
and facilitate disposition by the Investor of the Registrable Securities
pursuant to the Registration Statement.

                  4. OBLIGATIONS OF THE INVESTORS. In connection with the
registration of the Registrable Securities, the Investors shall have the
following obligations:

                  (a) It shall be a condition precedent to the obligations of
the Company to complete the registration pursuant to this Agreement with respect
to the Registrable Securities of a particular Investor that such Investor shall
furnish to the Company such information regarding itself, the Registrable
Securities held by it, and the intended method of disposition of the Registrable
Securities held by it, as shall be reasonably required to effect the
registration of such Registrable Securities and shall execute such documents in
connection with such registration as the Company may reasonably request. At
least ten (10) days prior to the first anticipated filing date of the
Registration Statement, the Company shall notify each Investor of the
information the Company requires from each such Investor (the "Requested
Information") if such Investor has any Registrable Securities included in the
Registration Statement. If at least two (2) business days prior to the filing
date the Company has not received the Requested Information from an Investor (a
"Non-Responsive Investor"), then the Company may file the Registration Statement
without including Registrable Securities of such Non-Responsive Investor;

                  (b) Each Investor, by such Investor's acceptance of the
Registrable Securities, agrees to cooperate with the Company as reasonably
requested by the Company in connection with the preparation and filing of the
Registration Statement hereunder, unless such Investor has notified the Company
in writing of such Investor's election to exclude all of such Investor's
Registrable Securities from the Registration Statement; and

                  (c) Each Investor agrees that, upon receipt of any notice from
the Company of the happening of any event of the kind described in Section 3(f)
or 3(g), above, such Investor will immediately discontinue disposition of
Registrable Securities pursuant to the Registration Statement covering such
Registrable Securities until such Investor's receipt of the copies of the
supplemented or amended prospectus contemplated by Section 3(f) or 3(g) and, if
so directed by the Company, such Investor shall deliver to the Company (at the
expense of the Company) or destroy (and deliver to the Company a certificate of
destruction) all copies in such Investor's possession, of the prospectus
covering such Registrable Securities current at the time of receipt of such
notice.

                  5. EXPENSES OF REGISTRATION. All reasonable expenses (other
than underwriting discounts and commissions of the Investor) incurred in
connection with registrations, filings or qualifications pursuant to Section 3,
but including, without limitation, all registration, listing, and

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qualifications fees, printers and accounting fees, the fees and disbursements of
counsel for the Company shall be borne by the Company. In addition, a fee for a
single counsel for the Investors (as a group and not individually) equal to
$2,000 for the review of each Registration Statement shall be borne by the
Company.

                  6. INDEMNIFICATION. In the event any Registrable Securities
are included in a Registration Statement under this Agreement:

                  (a) To the extent permitted by law, the Company will indemnify
and hold harmless each Investor who holds such Registrable Securities, the
directors, if any, of such Investor, the officers, if any, of such Investor,
each person, if any, who controls any Investor within the meaning of the
Securities Act or the Exchange Act (each, an "Indemnified Person" or
"Indemnified Party"), against any losses, claims, damages, liabilities or
expenses (joint or several) incurred (collectively, "Claims") to which any of
them may become subject under the Securities Act, the Exchange Act or otherwise,
insofar as such Claims (or actions or proceedings, whether commenced or
threatened, in respect thereof) arise out of or are based upon any of the
following statements, omissions or violations in the Registration Statement, or
any post-effective amendment thereof, or any prospectus included therein: (i)
any untrue statement or alleged untrue statement of a material fact contained in
the Registration Statement or any post-effective amendment thereof or the
omission or alleged omission to state therein a material fact required to be
stated therein or necessary to make the statements therein not misleading, (ii)
any untrue statement or alleged untrue statement of a material fact contained in
the final prospectus (as amended or supplemented, if the Company files any
amendment thereof or supplement thereto with the SEC) or the omission or alleged
omission to state therein any material fact necessary to make the statements
made therein, in light of the circumstances under which the statements therein
were made, not misleading or (iii) any violation or alleged violation by the
Company of the Securities Act, the Exchange Act, any state securities law or any
rule or regulation under the Securities Act, the Exchange Act or any state
securities law (the matters in the foregoing clauses (i) through (iii) being,
collectively, "Violations"). Subject to clause (b) of this Section 6, the
Company shall reimburse the Investors, promptly as such expenses are incurred
and are due and payable, for any legal fees or other reasonable expenses
incurred by them in connection with investigating or defending any such Claim.
Notwithstanding anything to the contrary contained herein, the indemnification
agreement contained in this Section 6(a) shall not (I) apply to a Claim arising
out of or based upon a Violation which occurs in reliance upon and in conformity
with information furnished in writing to the Company by or on behalf of any
Indemnified Person expressly for use in connection with the preparation of the
Registration Statement or any such amendment thereof or supplement thereto; (II)
be available to the extent such Claim is based on a failure of the Investor to
deliver or cause to be delivered the prospectus made available by the Company or
the amendment or supplement thereto made available by the Company; (III) be
available to the extent such Claim is based on the delivery of a prospectus by
the Investor after receiving notice from the Company under Section 3(f), (g) or
(h) hereof (other than a notice regarding the effectiveness of the Registration
Statement or any amendment or supplement thereto), or (IV) apply to amounts paid
in settlement of any Claim if such settlement is effected without the prior
written

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consent of the Company, which consent shall not be unreasonably withheld or
delayed. Each Investor will indemnify and hold harmless the Company and its
officers, directors and agents (each, an "Indemnified Person" or "Indemnified
Party") against any Claims arising out of or based upon any Violation which
occurs in reliance upon and in conformity with information furnished to the
Company, by or on behalf of such Investor, expressly for use in connection with
the preparation of the Registration Statement or the amendment or supplement
thereto, subject to such limitations and conditions as are applicable to the
Indemnification provided by the Company to this Section 6. Such indemnity shall
remain in full force and effect regardless of any investigation made by or on
behalf of the Indemnified Person and shall survive the transfer of the
Registrable Securities by the Investors pursuant to Section 9.

                  (b) Promptly after receipt by an Indemnified Person or
Indemnified Party under this Section 6 of notice of the commencement of any
action (including any governmental action), such Indemnified Person or
Indemnified Party shall, if a Claim in respect thereof is to be made against any
indemnifying party under this Section 6, deliver to the indemnifying party a
written notice of the commencement thereof and the indemnifying party shall have
the right to participate in, and, to the extent the indemnifying party so
desires, jointly with any other indemnifying party similarly noticed, to assume
control of the defense thereof with counsel mutually satisfactory to the
indemnifying party and the Indemnified Person or the Indemnified Party, as the
case may be. In case any such action is brought against any Indemnified Person
or Indemnified Party, and it notifies the indemnifying party of the commencement
thereof, the indemnifying party will be entitled to participate in, and, to the
extent that it may wish, jointly with any other indemnifying party similarly
notified, assume the defense thereof, subject to the provisions herein stated
and after notice from the indemnifying party to such Indemnified Person or
Indemnified Party of its election so to assume the defense thereof, the
indemnifying party will not be liable to such Indemnified Person or Indemnified
Party under this Section 6 for any legal or other reasonable out-of-pocket
expenses subsequently incurred by such Indemnified Person or Indemnified Party
in connection with the defense thereof other than reasonable costs of
investigation, unless the indemnifying party shall not pursue the action to its
final conclusion. The Indemnified Person or Indemnified Party shall have the
right to employ separate counsel in any such action and to participate in the
defense thereof, but the fees and reasonable out-of-pocket expenses of such
counsel shall not be at the expense of the indemnifying party if the
indemnifying party has assumed the defense of the action with counsel reasonably
satisfactory to the Indemnified Person or Indemnified Party provided such
counsel is of the opinion that all defenses available to the Indemnified Party
can be maintained without prejudicing the rights of the indemnifying party. The
failure to deliver written notice to the indemnifying party within a reasonable
time of the commencement of any such action shall not relieve such indemnifying
party of any liability to the Indemnified Person or Indemnified Party under this
Section 6, except to the extent that the indemnifying party is prejudiced in its
ability to defend such action. The indemnification required by this Section 6
shall be made by periodic payments of the amount thereof during the course of
the investigation or defense, as such expense, loss, damage or liability is
incurred and is due and payable.

                                       11

<PAGE>

                  7. CONTRIBUTION. To the extent any indemnification by an
indemnifying party is prohibited or limited by law, the indemnifying party
agrees to make the maximum contribution with respect to any amounts for which it
would otherwise be liable under Section 6 to the fullest extent permitted by
law; provided, however, that (a) no contribution shall be made under
circumstances where the maker would not have been liable for indemnification
under the fault standards set forth in Section 6; (b) no seller of Registrable
Securities guilty of fraudulent misrepresentation (within the meaning of Section
11(f) of the Securities Act) shall be entitled to contribution from any seller
of Registrable Securities who was not guilty of such fraudulent
misrepresentation; and (c) except where the seller has committed fraud (other
than a fraud by reason of the information included or omitted from the
Registration Statement as to which the Company has not given notice as
contemplated under Section 3 hereof) or intentional misconduct, contribution by
any seller of Registrable Securities shall be limited in amount to the net
amount of proceeds received by such seller from the sale of such Registrable
Securities.

                  8. REPORTS UNDER SECURITIES ACT AND EXCHANGE ACT. With a view
to making available to Investor the benefits of Rule 144 promulgated under the
Securities Act or any other similar rule or regulation of the SEC that may at
any time permit Investor to sell securities of the Company to the public without
Registration ("Rule 144"), the Company agrees to:

                  (a) make and keep public information available, as those terms
are understood and defined in Rule 144;

                  (b) file with the SEC in a timely manner all reports and other
documents required of the Company under the Securities Act and the Exchange Act;
and

                  (c) furnish to Investor so long as Investor owns Registrable
Securities, promptly upon request, (i) a written statement by the Company that
it has complied with the reporting requirements of the Securities Act and the
Exchange Act, (ii) a copy of the most recent annual or quarterly report of the
Company and such other reports and documents so filed by the Company and (iii)
such other information as may be reasonably requested to permit Investor to sell
such securities pursuant to Rule 144 without Registration.

                  (d) The Company will, at the request of any Holder of
Registrable Securities, upon receipt from such Holder of a certificate
certifying (i) that such Holder has held such Registrable Securities for a
period of not less than one (1) year, (ii) that such Holder has not been an
affiliate (as defined in Rule 144) of the company for more than the ninety (90)
preceding days, and (iii) as to such other matters as may be appropriate in
accordance with such Rule, remove from the stock certificate representing such
Registrable Securities that portion of any restrictive legend which relates to
the registration provisions of the Securities Act, provided, however, counsel to
Investor is hereby authorized to provide such instructions and opinion to the
transfer agent regarding the removal of the restrictive legend.

                                       12

<PAGE>

                  9. ASSIGNMENT OF THE REGISTRATION RIGHTS. The rights to have
the Company register Registrable Securities pursuant to this Agreement shall be
automatically assigned by the Investors to any transferee of Registrable
Securities (or all or any portion of any unconverted Preferred Stock) only if:
(a) the Investor agrees in writing with the transferee or assignee to assign
such rights, and a copy of such agreement is furnished to the Company within a
reasonable time after such assignment, (b) the Company is, within a reasonable
time after such transfer or assignment, furnished with written notice of (i) the
name and address of such transferee or assignee and (ii) the securities with
respect to which such registration rights are being transferred or assigned, (c)
immediately following such transfer or assignment the further disposition of
such securities by the transferee or assignee is restricted under the Securities
Act and applicable state securities laws, and (d) at or before the time the
Company received the written notice contemplated by clause (b) of this sentence
the transferee or assignee agrees in writing with the Company to be bound by all
of the provisions contained herein.

                  10. AMENDMENT OF REGISTRATION RIGHTS. Any provision of this
Agreement may be amended and the observance thereof may be waived (either
generally or in a particular instance and either retroactively or
prospectively), only with the written consent of the Company and Investors who
hold a eighty (80%) percent interest of the Registrable Securities. Any
amendment or waiver effected in accordance with this Section 10 shall be binding
upon each Investor and the Company.

                  11.      MISCELLANEOUS.

                                    (a) A person or entity is deemed to be a
holder of Registrable Securities whenever such person or entity owns of record
such Registrable Securities. The Company shall act upon the basis of
instructions, notice or election received from the registered owner of such
Registrable Securities.

                                    (b) Notices required or permitted to be
given hereunder shall be given in the manner contemplated by the Securities
Purchase Agreement, (i) if to the Company or to the Initial Investor, to their
respective address contemplated by the Securities Purchase Agreement, and (ii)
if to any other Investor, at such address as such Investor shall have provided
in writing to the Company, or at such other address as each such party furnishes
by notice given in accordance with this Section 11(b).

                                    (c) Failure of any party to exercise any
right or remedy under this Agreement or otherwise, or delay by a party in
exercising such right or remedy, shall not operate as a waiver thereof.

                                    (d) This Agreement shall be governed by and
interpreted in accordance with the laws of the State of New York for contracts
to be wholly performed in such state and without giving effect to the principles
thereof regarding the conflict of laws. Each of the parties

                                       13

<PAGE>

consents to the jurisdiction of the federal courts whose districts encompass any
part of the City of New York or the state courts of the State of New York
sitting in the City of New York in connection with any dispute arising under
this Agreement and hereby waives, to the maximum extent permitted by law, any
objection, including any objection based on FORUM NON COVENIENS, to the bringing
of any such proceeding in such jurisdictions. To the extent determined by such
court, either party hereto shall reimburse the other party for any reasonable
legal fees and disbursements incurred by such party in enforcement of or
protection of any of its rights under this Agreement.

                                    (e) If any provision of this Agreement shall
be invalid or unenforceable in any jurisdiction, such invalidity or
unenforceability shall not affect the validity or enforceability of the
remainder of this Agreement or the validity or enforceability of this Agreement
in any other jurisdiction.

                                    (f) Subject to the requirements of Section 9
hereof, this Agreement shall inure to the benefit of and be binding upon the
successors and assigns of each of the parties hereto.

                                    (g) All pronouns and any variations thereof
refer to the masculine, feminine or neuter, singular or plural, as the context
may require.

                                    (h) The headings in this Agreement are for
convenience of reference only and shall not limit or otherwise affect the
meaning thereof.

                                    (i) This Agreement may be executed in one or
more counterparts, each of which shall be deemed an original but all of which
shall constitute one and the same agreement. This Agreement, once executed by a
party, may be delivered to the other party hereto by telephone line facsimile
transmission of a copy of this Agreement bearing the signature of the party so
delivering this Agreement.

                                    (j) This Agreement constitutes the entire
agreement among the parties hereto with respect to the subject matter hereof.
There are no restrictions, promises, warranties or undertakings, other than
those set forth or referred to herein. This Agreement supersedes all prior
agreements and understandings among the parties hereto with respect to the
subject matter hereof. This Agreement may be amended only by an instrument in
writing signed by the party to be charged with enforcement thereof.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                       14

<PAGE>

                        IN WITNESS WHEREOF, the parties have caused this
Agreement to be duly executed by their respective officers thereunto duly
authorized as of the day and year first above written.

                                  DYNAGEN, INC.

                                  By:
                                     -----------------------------
                                  Name:
                                  Title:

                                  THE ENDEAVOUR CAPITAL INVESTMENT FUND, S.A.

                                  By: Endeavour Management, Inc.

                                  By:
                                     -----------------------------
                                  Name:
                                  Title:

                                       15<PAGE>   1
                                                                   EXHIBIT 10.33

                         REGISTRATION RIGHTS AGREEMENT

     This REGISTRATION RIGHTS AGREEMENT (this "Agreement") is made as of
November 7, 2000 by and among (i) Cardiac Pathways Corporation, a Delaware
corporation (the "Company"), (ii) Van Wagoner Funds, Bank of America Ventures,
BA Venture Partners V, Morgan Stanley Venture Partners III, L.P., Morgan Stanley
Venture Investors III, L.P., The Morgan Stanley Venture Partners Entrepreneur
Fund, L.P., State of Wisconsin Investment Board, Special Situations Private
Equity Fund, L.P., Faria Fund Ltd., Fogarty Family Revocable Trust and Trellis
Health Ventures, L.P. (collectively the "Initial Investors") and (iii) each
person or entity that subsequently becomes a party to this Agreement pursuant
to, and in accordance with, (x) the provisions of Section 2.4 of the Stock
Purchase Agreement (defined below) or (y) the provisions of Section 13 hereof
(collectively, the "Investor Permitted Transferees" and each individually an
"Investor Permitted Transferee").

     WHEREAS, the Company has agreed to issue and sell to the Initial Investors,
and the Initial Investors have agreed to purchase from the Company, 5,835,293
shares (the "Purchased Shares") of the Company's common stock, $0.001 par value
per share (the "Common Stock"), all upon the terms and conditions set forth in
that certain Stock Purchase Agreement, dated of even date herewith, between the
Company and the Initial Investors (the "Stock Purchase Agreement"); and

     WHEREAS, the terms of the Stock Purchase Agreement provide that it shall be
a condition precedent to the closing of the transactions thereunder for the
Company and the Initial Investors to execute and deliver this Agreement.

     NOW, THEREFORE, in consideration of the premises and mutual covenants
contained herein, the parties hereto hereby agree as follows:

     1. Definitions. The following terms shall have the meanings provided
therefor below or elsewhere in this Agreement as described below:

     "Board" shall mean the board of directors of the Company.

     "Closing" shall have the meaning ascribed to such term in the Stock
Purchase Agreement.

     "Exchange Act" shall mean the Securities Exchange Act of 1934, as amended,
and all of the rules and regulations promulgated thereunder.

     "Investors" shall mean, collectively, the Initial Investors and the
Investor Permitted Transferees; provided, however, that the term "Investors"
shall not include any Initial Investors or any of the Investor Permitted
Transferees that cease to own or hold any Registrable Shares.

     "Majority Holders" shall mean, at the relevant time of reference thereto,
those Investors holding more than fifty percent (50%) of the Registrable Shares
held by all of the Investors.

     "Qualifying Holder" shall have the meaning ascribed thereto in Section 13
hereof.

     "Registrable Shares" shall mean (i) the Purchased Shares and any shares
issued in respect thereof, (ii) shares of the Company's Common Stock issuable on
exercise of the Warrants (as defined in Section 4 hereof) issued pursuant to
this Agreement and (iii) any Common Stock of the Company issued as (or issuable
on the conversion or exercise of any warrant, right or other security that is
issued as) a dividend or other distribution with respect to, or in exchange for,
or in replacement of, the shares referenced in clauses (i) and (ii) above.

     "Rule 144" shall mean Rule 144 promulgated under the Securities Act and any
successor or substitute rule, law or provision.

     "SEC" shall mean the Securities and Exchange Commission.

     "Securities Act" shall mean the Securities Act of 1933, as amended, and all
of the rules and regulations promulgated thereunder.

                                       1

<PAGE>   2

     2. Effectiveness; Termination. This Agreement shall become effective and
legally binding only if the Closing occurs. This Agreement shall terminate and
be of no further force or effect, automatically and without any action being
required of any party hereto, if the Stock Purchase Agreement is terminated
pursuant to Section 8 thereof.

     3. Mandatory Registration.

     (a) Within thirty days after the Closing, the Company will prepare and file
with the SEC a registration statement on Form S-3 (or, if Form S-3 is not then
available to the Company, on such form of registration statement that is then
available to effect a registration of all Registrable Shares, subject to the
consent of the Investors holding at least a majority of the Registrable Shares)
for the purpose of registering under the Securities Act all of the Registrable
Shares for resale by, and for the account of, the Investors as selling
stockholders thereunder (the "Registration Statement"). The Registration
Statement shall permit the Investors to offer and sell, on a delayed or
continuous basis pursuant to Rule 415 under the Securities Act, any or all of
the Registrable Shares. The Company agrees to use best efforts to cause the
Registration Statement to become effective as soon as practicable after filing.
The Company shall be required to keep the Registration Statement effective until
such date that is the earlier of (i) the date when all of the Registrable Shares
registered thereunder shall have been sold, (ii) such time as all the
Registrable Shares held by the Investors can be sold pursuant to Rule 144 within
a given three-month period without volume limitation and without compliance with
the registration requirements of the Securities Act or (iii) the second
anniversary of the date on which the Registration Statement is declared
effective, subject to extension as set forth below (such date is referred to
herein as the "Mandatory Registration Termination Date"). Thereafter, the
Company shall be entitled to withdraw the Registration Statement and the
Investors shall have no further right to offer or sell any of the Registrable
Shares pursuant to the Registration Statement (or any prospectus relating
thereto).

     (b) The offer and sale of the Registrable Shares pursuant to the
Registration Statement shall not be underwritten.

     4. Warrant Coverage.

     (a) In the event the Company has not filed the Registration Statement with
the SEC within thirty (30) days after the Closing, the Company shall issue to
each Investor a warrant in the form attached hereto as Exhibit A (each,
a"Warrant" and, collectively, the "Warrants") to acquire that number of shares
of Common Stock of the Company equal to (i) three percent (3%) of the aggregate
amount of shares of common stock sold pursuant to the Stock Purchase Agreement,
multiplied by, (ii) a fraction, the numerator of which is the number of shares
of Common Stock acquired by that Investor pursuant to the Stock Purchase
Agreement and the denominator of which is equal to the aggregate number of
shares of Common Stock sold pursuant to the Stock Purchase Agreement. The
exercise price of each such Warrant will be $4.25 per share of Common Stock
issuable on exercise of the Warrant (as adjusted for stock splits, stock
combinations, reorganizations and the like effected after the date of this
Agreement).

     (b) At the end of each thirty (30) day period (or a portion thereof), after
the initial thirty day period referred to in Section 4(a), that the Registration
Statement has not been filed with the SEC, the Company shall issue to each
Investor a Warrant to acquire that number of shares of Common Stock equal to (i)
three percent (3%) of the aggregate amount of shares of common stock sold
pursuant to the Stock Purchase Agreement, multiplied by, (ii) a fraction, the
numerator of which is the number of shares of Common Stock acquired by that
Investor pursuant to the Stock Purchase Agreement and the denominator of which
is equal to the aggregate number of shares of Common Stock sold pursuant to the
Stock Purchase Agreement, multiplied by (iii) a fraction, the numerator of which
is the number of days during such thirty-day period before the date on which the
Registration Statement was filed with the SEC and the denominator of which is
thirty. The exercise price of each such Warrant will be $4.25 per share of
Common Stock issuable on exercise of the Warrant (as adjusted for stock splits,
stock combinations, reorganizations and the like effected after the date of this
Agreement).

     (c) In the event the Registration Statement has not been declared effective
by the SEC within seventy (70) days after the Closing, the Company shall issue
to each Investor a Warrant to acquire that number of

                                       2

<PAGE>   3

shares of Common Stock of the Company equal to (i) three percent (3%) of the
aggregate amount of shares of common stock sold pursuant to the Stock Purchase
Agreement, multiplied by, (ii) a fraction, the numerator of which is the number
of shares of Common Stock acquired by that Investor pursuant to the Stock
Purchase Agreement and the denominator of which is equal to the aggregate number
of shares of Common Stock sold pursuant to the Stock Purchase Agreement. The
exercise price of each such Warrant will be $4.25 per share of Common Stock
issuable on exercise of the Warrant (as adjusted for stock splits, stock
combinations, reorganizations and the like effected after the date of this
Agreement).

     (d) At the end of each thirty-day period (or a portion thereof), after the
initial seventy (70) day period referred to in Section 4(c), that the
Registration Statement has not been declared effective by the SEC, the Company
shall issue to each Investor a Warrant to acquire that number of shares of
Common Stock equal to (i) three percent (3%) of the aggregate amount of shares
of common stock sold pursuant to the Stock Purchase Agreement, multiplied by,
(ii) a fraction, the numerator of which is the number of shares of Common Stock
acquired by that Investor pursuant to the Stock Purchase Agreement and the
denominator of which is equal to the aggregate number of shares of Common Stock
sold pursuant to the Stock Purchase Agreement, multiplied by (iii) a fraction,
the numerator of which is the number of days during such thirty-day period
before the date on which the Registration Statement was declared effective by
the SEC and the denominator of which is thirty. The exercise price of each such
Warrant will be $4.25 per share of Common Stock issuable on exercise of the
Warrant (as adjusted for stock splits, stock combinations, reorganizations and
the like effected after the date of this Agreement).

     (e) The Company shall execute such other and further certificates,
instruments and other documents as may be reasonably requested by the Investors
or reasonably necessary or proper to implement, complete and perfect the
Investors' rights under this Section 4 and Section 3 and to freely trade the
Registrable Shares without limitation or restriction imposed or created by the
Company or securities law.

     5. "Piggyback" Registration Rights.

     (a) If, at any time after the Mandatory Registration Termination Date, the
Company proposes to register any of its Common Stock under the Securities Act,
whether as a result of a primary or secondary offering of Common Stock or
pursuant to registration rights granted to holders of other securities of the
Company (whether as a demand registration right or a Form S-3 registration
right, but excluding in all cases any registrations to be effected on Forms S-4
or S-8 or other applicable successor Forms), the Company shall, each such time,
give to the Investors holding Registrable Shares written notice of its intent to
do so. If, within twenty (20) days of giving such notice, the Company shall
receive from an Investor a written request to include its Registrable Shares in
such registration, the Company shall use commercially reasonable efforts to
cause to be included in such registration the Registrable Shares of such selling
Investor, to the extent requested to be registered; provided, however, that (i)
the number of Registrable Shares proposed to be sold by such selling Investor
will be at least ten percent (10%) of the total number of Registrable Shares
then held by such participating selling Investor (or a lesser percentage if the
gross proceeds to the selling Investor resulting from the sale of such
Registrable Shares will equal at least $2,000,000), (ii) such selling Investor
may not include its Registrable Shares in such registration if the Investor can
sell all such Registrable Shares pursuant to Rule 144 within a given three-month
period without volume limitation and without compliance with the registration
requirements of the Securities Act, (iii) such selling Investor agrees to sell
those of its Registrable Shares to be included in such registration in the same
manner and on the same terms and conditions as the other shares of Common Stock
which the Company proposes to register and (iv) in the event (x) the
registration is to include shares of Common Stock to be sold for the account of
the Company or any party exercising registration rights pursuant to any other
agreement with the Company and (y) the proposed managing underwriter advises the
Company that in its opinion the inclusion of such selling Investor's Registrable
Shares (without any reduction in the number of shares to be sold for the account
of the Company or such party exercising registration rights) is likely to affect
materially and adversely the success of the offering or the price that would be
received for any shares of Common Stock offered, then the rights of such selling
Investor shall be as provided in Section 5(b) hereof.

                                       3

<PAGE>   4

     (b) If a registration pursuant to Section 5(a) hereof involves an
underwritten offering and the managing underwriter shall advise the Company in
writing that, in its opinion, the number of shares of Common Stock requested by
the Investors to be included in such registration is likely to affect materially
and adversely the success of the offering or the price that would be received
for any shares of Common Stock offered in such offering, then, notwithstanding
anything in Section 5(a) to the contrary, the Company shall only be required to
include in such registration, to the extent of the number of shares of Common
Stock which the Company is so advised can be sold in such offering, (i) first,
the number of shares of Common Stock proposed to be included in such
registration for the account of the Company and/or any stockholders of the
Company (other than the Investors) that have exercised demand registration
rights, in accordance with the priorities, if any, then existing among the
Company and/or such stockholders of the Company with registration rights (other
than the Investors), and (ii) second, the shares of Common Stock requested to be
included in such registration by all other stockholders of the Company who have
piggyback registration rights (including, without limitation, the Investors),
pro rata among such other stockholders (including, without limitation, the
Investors) on the basis of the number of shares of Common Stock that each of
them beneficially owns.

     (c) In connection with any offering involving an underwriting of shares,
the Company shall not be required under Section 5 hereof or otherwise to include
the Registrable Shares of any Investor therein unless such Investor accepts and
agrees to the terms of the underwriting, which shall be reasonable and
customary, as agreed upon between the Company and the underwriters selected by
the Company.

     6. Obligations of the Company. In connection with the Company's obligation
under Section 3 and 5 hereof to file a Registration Statement with the SEC and
to use its best efforts to cause the Registration Statement to become effective
as soon as practicable after filing, the Company shall, as expeditiously as
reasonably possible, subject to Section 12 hereof:

          (a) Prepare and file with the SEC such amendments and supplements to
     the Registration Statement and the prospectus used in connection therewith
     as may be necessary to comply with the provisions of the Securities Act
     with respect to the disposition of all Registrable Shares covered by the
     Registration Statement;

          (b) Furnish to the selling Investors such number of copies of a
     prospectus, including a preliminary prospectus, in conformity with the
     requirements of the Securities Act, and such other documents (including,
     without limitation, prospectus amendments and supplements as are prepared
     by the Company in accordance with Section 6(a) above) as the selling
     Investors may reasonably request in order to facilitate the disposition of
     such selling Investors' Registrable Shares;

          (c) Notify the selling Investors, at any time when a prospectus
     relating to the Registration Statement is required to be delivered under
     the Securities Act, of the happening of any event as a result of which the
     prospectus included in or relating to the Registration Statement contains
     an untrue statement of a material fact or omits any fact necessary to make
     the statements therein not misleading; and, thereafter, subject to Section
     12 hereof the Company will promptly prepare (and, when completed, deliver
     to each selling Investor) a supplement or amendment to such prospectus so
     that, as thereafter delivered to the purchasers of such Registrable Shares,
     such prospectus will not contain an untrue statement of a material fact or
     omit to state any fact necessary to make the statements therein not
     misleading; provided that upon such notification by the Company, the
     selling Investors will not offer or sell Registrable Shares until the
     Company has notified the selling Investors that it has prepared a
     supplement or amendment to such prospectus and delivered copies of such
     supplement or amendment to the selling Investors (it being understood and
     agreed by the Company that the foregoing proviso shall in no way diminish
     or otherwise impair the Company's obligation to promptly prepare a
     prospectus amendment or supplement as above provided in this Section 6(c)
     and deliver copies of same as above provided in Section 6(b) hereof);

          (d) Use commercially reasonable efforts to register and qualify the
     Registrable Shares covered by the Registration Statement under such other
     securities or Blue Sky laws of all states requiring such securities or Blue
     Sky registration or qualification, provided that the Company shall not be
     required in connection therewith or as a condition thereto to qualify to do
     business or to file a general consent to
                                       4

<PAGE>   5

     service of process in any such states or jurisdictions, and provided
     further that (notwithstanding anything in this Agreement to the contrary
     with respect to the bearing of expenses) if any jurisdiction in which any
     of such Registrable Shares shall be qualified shall require that expenses
     incurred in connection with the qualification therein of any such
     Registrable Shares be borne by the selling Investors, then the selling
     Investors shall, to the extent required by such jurisdiction, pay their pro
     rata share of such qualification expenses;

          (e) Cause all such Registrable Shares registered hereunder to be
     listed on each securities exchange on which securities of the same class
     issued by the Company are then listed;

          (f) Provide a transfer agent and registrar for all Registrable Shares
     registered hereunder and a CUSIP number for all such Registrable Shares, in
     each case not later than the effective date of such registration; and

          (g) If an Investor's Registrable Shares are being sold through an
     underwritten public offering, the Company shall furnish to each selling
     Investor whose shares of Registrable Shares are being registered pursuant
     to Section 5, on the date that such Registrable Shares are delivered to the
     underwriters for sale, (i) an opinion, dated such date, of the counsel
     representing the Company for the purposes of such registration, in form and
     substance as is customarily given to underwriters in an underwritten public
     offering, addressed to the underwriters and (ii) a "comfort" letter signed
     by the independent public accountants who have certified the Company's
     financial statements included in the Registration Statement, covering
     substantially the same matters with respect to the Registration Statement
     (and the prospectus included therein) and with respect to events subsequent
     to the date of the financial statements, as are customarily covered in
     accountants' letters delivered to the underwriters in underwritten public
     offerings of securities addressed to the underwriters.

     7. Furnish Information. It shall be a condition precedent to the
obligations of the Company to take any action pursuant to this Agreement that
the selling Investors shall furnish to the Company such information regarding
them and the securities held by them as the Company shall reasonably request and
as shall be required in order to effect any registration by the Company pursuant
to this Agreement.

     8. Expenses of Registration. All expenses incurred in connection with the
registration of the Registrable Shares pursuant to this Agreement (excluding
underwriting, brokerage and other selling commissions and discounts), including
without limitation all registration and qualification and filing fees, printing
expenses, fees and disbursements of counsel for the Company, and the reasonable
fees and disbursements of one counsel for the selling Investors selected by the
selling Investors, shall be borne by the Company.

     9. Delay of Registration. The Investors shall not take any action to
restrain, enjoin or otherwise delay any registration as the result of any
controversy which might arise with respect to the interpretation or
implementation of this Agreement.

     10. Indemnification.

     (a) To the extent permitted by law, the Company will indemnify and hold
harmless each selling Investor (including, without limitation, the partners or
officers, directors and stockholders of such Investor, legal counsel and
accountants for such Investor), any investment banking firm acting as an
underwriter for the selling Investors, any broker/dealer acting on behalf of any
selling Investors and each officer and director of such selling Investor, such
underwriter, such broker/dealer and each person, if any, who controls such
selling Investor, such underwriter or broker/dealer within the meaning of the
Securities Act, against any losses, claims, damages or liabilities, joint or
several, to which they may become subject under the Securities Act, the Exchange
Act, and other federal or state securities laws, or otherwise, insofar as such
losses, claims, damages or liabilities (or actions in respect thereof) (i) arise
out of or are based upon any untrue or alleged untrue statement of any material
fact contained in the Registration Statement, in any preliminary prospectus or
final prospectus relating thereto or in any amendments or supplements to the
Registration Statement or any such preliminary prospectus or final prospectus,
(ii) arise out of or are based upon the omission or alleged omission to state
therein a material fact required to be stated therein, or necessary to make the
statements therein not misleading or (iii) arise out of any violation or alleged
violation by the Company of the Securities Act, the
                                       5

<PAGE>   6

Exchange Act, any other federal or state securities law or any rule or
regulation promulgated under the Securities Act, the Exchange Act or any other
federal or state securities law; and will reimburse such selling Investor, such
underwriter, broker/dealer or such officer, director or controlling person for
any legal or other expenses reasonably incurred by them in connection with
investigating or defending any such loss, claim, damage, liability or action;
provided, however, that the indemnity agreement contained in this Section 10(a)
shall not apply to amounts paid in settlement of any such loss, claim, damage,
liability or action if such settlement is effected without the consent of the
Company (which consent shall not be unreasonably withheld or delayed), nor shall
the Company be liable in any such case for any such loss, damage, liability or
action to the extent that it arises out of or is based upon an untrue statement
or alleged untrue statement or omission made in connection with the Registration
Statement, any preliminary prospectus or final prospectus relating thereto or
any amendments or supplements to the Registration Statement or any such
preliminary prospectus or final prospectus, in reliance upon and in conformity
with written information furnished expressly for use in connection with the
Registration Statement or any such preliminary prospectus or final prospectus by
the selling Investors, any underwriter for them, any broker/dealer acting on
their behalf or controlling person with respect to them.

     (b) To the extent permitted by law, each selling Investor will severally
and not jointly indemnify and hold harmless the Company, each of its directors,
each of its officers who have signed the Registration Statement, each person, if
any, who controls the Company within the meaning of the Securities Act, any
investment banking firm acting as underwriter for the Company or the selling
Investors, or any broker/dealer acting on behalf of the Company or any selling
Investors, and all other selling Investors against any losses, claims, damages
or liabilities to which the Company or any such director, officer, controlling
person, underwriter, or broker/dealer or such other selling Investor may become
subject to, under the Securities Act or otherwise, insofar as such losses,
claims, damages or liabilities (or actions in respect thereto) arise out of or
are based upon any untrue or alleged untrue statement of any material fact
contained in the Registration Statement or any preliminary prospectus or final
prospectus, relating thereto or in any amendments or supplements to the
Registration Statement or any such preliminary prospectus or final prospectus,
or arise out of or are based upon the omission or alleged omission to state
therein a material fact required to be stated therein or necessary to make the
statements therein not misleading, in each case to the extent and only to the
extent that such untrue statement or alleged untrue statement or omission or
alleged omission was made in the Registration Statement, in any preliminary
prospectus or final prospectus relating thereto or in any amendments or
supplements to the Registration Statement or any such preliminary prospectus or
final prospectus, in reliance upon and in conformity with written information
furnished by the selling Investor expressly for use in connection with the
Registration Statement, or any preliminary prospectus or final prospectus; and
such selling Investor will reimburse any legal or other expenses reasonably
incurred by the Company or any such director, officer, controlling person,
underwriter, broker/dealer or other selling Investor in connection with
investigating or defending any such loss, claim, damage, liability or action,
provided, however, that the liability of each selling Investor hereunder (when
aggregated with amounts contributed, if any, pursuant to Section 10(d)) shall be
limited to the proceeds (net of underwriting discounts and commissions, if any)
received by such selling Investor from the sale of Registrable Shares covered by
the Registration Statement, and provided, further, however, that the indemnity
agreement contained in this Section 10(b) shall not apply to amounts paid in
settlement of any such loss, claim, damage, liability or action if such
settlement is effected without the consent of those selling Investor(s) against
which the request for indemnity is being made (which consent shall not be
unreasonably withheld or delayed).

     (c) Promptly after receipt by an indemnified party under this Section 10 of
notice of the commencement of any action, such indemnified party will, if a
claim in respect thereof is to be made against any indemnifying party under this
Section 10, notify the indemnifying party in writing of the commencement thereof
and the indemnifying party shall have the right to participate in and, to the
extent the indemnifying party desires, jointly with any other indemnifying party
similarly noticed, to assume at its expense the defense thereof with counsel
mutually satisfactory to the indemnifying parties with the consent of the
indemnified party which consent will not be unreasonably withheld, conditioned
or delayed. In the event that the indemnifying party assumes any such defense,
the indemnified party may participate in such defense with its own counsel and
at its own expense, provided, however, that the counsel for the indemnifying
party shall act as lead counsel in all
                                       6

<PAGE>   7

matters pertaining to such defense or settlement of such claim and the
indemnifying party shall only pay for such indemnified party's reasonable legal
fees and expenses for the period prior to the date of its participation on such
defense. The failure to notify an indemnifying party promptly of the
commencement of any such action, if prejudicial to its ability to defend such
action, shall relieve such indemnifying party of any liability to the
indemnified party under this Section 10, but the omission so to notify the
indemnifying party will not relieve him of any liability which he may have to
any indemnified party otherwise other than under this Section 10.

     (d) If the indemnification provided in this Section 10 is held by a court
of competent jurisdiction to be unavailable to an indemnified party with respect
to any loss, liability, claim, damage or expense referred to herein, then the
indemnifying party, in lieu of indemnifying such indemnified party hereunder,
shall contribute to the amount paid or payable by such indemnified party as a
result of such loss, liability, claim, damage or expense in such proportion as
is appropriate to reflect the relative fault of the indemnifying party on the
one hand and of the indemnified party on the other in connection with the
statements or omissions that shall have resulted in such loss, liability, claim,
damage or expense, as well as any other relevant equitable considerations;
provided that in no event shall any contribution by an Investor under this
Section 10(d), when aggregate with amounts paid, if any, pursuant to Section
10(b), exceed the proceeds (net of underwriting discounts and commissions, if
any) from the sale of Registrable Shares hereunder received by such Investor.
The relative fault of the indemnifying party and of the indemnified party shall
be determined by reference to, among other things, whether the untrue or alleged
untrue statement of a material fact or the omission to state a material fact
relates to information supplied by the indemnifying party or by the indemnified
party and the parties' relative intent, knowledge, access to information, and
opportunity to correct or prevent such statement or omission.

     (e) The obligations of the Company and Investors under this Section 10
shall survive the completion of any offering of Registrable Shares in a
Registration Statement under Sections 3 and 5, and otherwise.

     (f) Notwithstanding anything to the contrary herein, the indemnifying party
shall not be entitled to settle any claim, suit or proceeding unless in
connection with such settlement the indemnified party receives an unconditional
release with respect to the subject matter of such claim, suit or proceeding and
such settlement does not contain any admission of fault by the indemnified
party.

     11. Reports Under the Exchange Act. With a view to making available to the
Investors the benefits of Rule 144 and any other rule or regulation of the SEC
that may at any time permit the Investors to sell the Registrable Shares to the
public without registration, the Company agrees to use best efforts: (i) to make
and keep public information available, as those terms are understood and defined
in the General Instructions to Form S-3, or any successor or substitute form,
and in Rule 144, (ii) to file with the SEC in a timely manner all reports and
other documents required to be filed by an issuer of securities registered under
the Securities Act or the Exchange Act, (iii) as long as any Investor owns any
Registrable Shares, to furnish in writing upon such Investor's request a written
statement by the Company that it has complied with the reporting requirements of
Rule 144 and of the Securities Act and the Exchange Act, and to furnish to such
Investor a copy of the most recent annual or quarterly report of the Company,
and such other reports, documents and other information as may be reasonably
requested in availing such Investor of any rule or regulation of the SEC
permitting the selling of any such Registrable Shares without registration and
(iv) undertake any additional actions reasonably necessary to maintain the
availability of the Registration Statement or the use of Rule 144.

     12. Deferral. Notwithstanding anything in this Agreement to the contrary,
if the Company shall furnish to the selling Investors a certificate signed by
the President or Chief Executive Officer of the Company stating that the Board
of Directors of the Company has made the good faith determination (i) that
continued use by the selling Investors of the Registration Statement for
purposes of effecting offers or sales of Registrable Shares pursuant thereto
would require, under the Securities Act, premature disclosure in the
Registration Statement (or the prospectus relating thereto) of material,
nonpublic information concerning the Company, its business or prospects or any
proposed material transaction involving the Company, (ii) that such premature
disclosure would be materially adverse to the Company, its business or prospects
or any such proposed

                                       7

<PAGE>   8

material transaction or would make the successful consummation by the Company of
any such material transaction significantly less likely and (iii) that it is
therefore essential to suspend the use by the Investors of such Registration
Statement (and the prospectus relating thereto) for purposes of effecting offers
or sales of Registrable Shares pursuant thereto, then the right of the selling
Investors to use the Registration Statement (and the prospectus relating
thereto) for purposes of effecting offers or sales of Registrable Shares
pursuant thereto shall be suspended for a period (the "Suspension Period") of
not more than 30 days after delivery by the Company of the certificate referred
to above in this Section 12; provided, however, that the Company may not utilize
this right more than two (2) times in any twelve month period and that the
Company shall not register shares for its own account during the Suspension
Period except in connection with a merger or the registration of shares relating
to a stock option, stock purchase or similar plan. During the Suspension Period,
none of the Investors shall offer or sell any Registrable Shares pursuant to or
in reliance upon the Registration Statement (or the prospectus relating
thereto).

     13. Transfer of Registration Rights. None of the rights of any Investor
under this Agreement shall be transferred or assigned to any person unless (i)
such person is a Qualifying Holder (as defined below), and (ii) such person
agrees to become a party to, and be bound by, all of the terms and conditions
of, this Agreement by duly executing and delivering to the Company an Instrument
of Adherence in the form attached as Exhibit B hereto. For purposes of this
Section 13, the term "Qualifying Holder" shall mean, with respect to any
Investor, (i) any partner thereof, (ii) any corporation or partnership
controlling, controlled by, under common control or under common investment
management with, such Investor or any partner thereof, or (iii) any other direct
transferee from such Investor of at least 50% of those Registrable Shares held
or that may be acquired by such Investor. None of the rights of any Investor
under this Agreement shall be transferred or assigned to any Person (including,
without limitation, a Qualifying Holder) that acquires Registrable Shares in the
event that and to the extent that such Person is eligible to resell such
Registrable Shares pursuant to Rule 144(k) of the Securities Act or may
otherwise resell all such Registrable Shares pursuant to an exemption from the
registration provisions of the Securities Act.

     14. Entire Agreement. This Agreement (including the exhibits hereto)
constitutes and contains the entire agreement and understanding of the parties
with respect to the subject matter hereof, and it also supersedes any and all
prior negotiations, correspondence, agreements or understandings with respect to
the subject matter hereof.

     15. Miscellaneous.

     (a) This Agreement may not be amended, modified or terminated, and no
rights or provisions may be waived, except with the written consent of the
Majority Holders and the Company. Notwithstanding the foregoing, the Company may
at its election by notifying the Initial Investors amend this Agreement to add
as parties to this Agreement additional purchasers of Common Stock pursuant to
the Stock Purchase Agreement.

     (b) This Agreement shall be governed by and construed and enforced in
accordance with the laws of the State of California, and shall be binding upon
and inure to the benefit of the parties hereto and their respective heirs,
personal representatives, successors or assigns, provided that the terms and
conditions of Section 13 hereof are satisfied. This Agreement shall also be
binding upon and inure to the benefit of any transferee of any of the
Registrable Shares provided that the terms and conditions of Section 13 hereof
are satisfied. Notwithstanding anything in this Agreement to the contrary, if at
any time any Investor shall cease to own any Registrable Shares, all of such
Investor's rights under this Agreement shall immediately terminate.

     (c)(i) Any notices, reports or other correspondence (hereinafter
collectively referred to as "correspondence") required or permitted to be given
hereunder shall be sent by mail, courier (overnight or same day) or

                                       8

<PAGE>   9

telecopy or delivered by hand to the party to whom such correspondence is
required or permitted to be given hereunder. The date of giving any notice shall
be the date of its actual receipt.

     (ii) All correspondence to the Company shall be addressed as follows:

        Cardiac Pathways Corporation
        995 Benecia Avenue
        Sunnyvale, CA 94086
        Attention: Eldon Bullington
        Title: Chief Financial Officer
        Fax: (408) 720-2171

          with a copy to:

        Wilson Sonsini Goodrich & Rosati
        650 Page Mill Road
        Palo Alto, California 94304
        Attention: Chris F. Fennell
        Fax (650) 845-5000

     (iii) All correspondence to any Investor shall be sent to the most recent
address furnished by the Investor to the Company.

     (d) Any Investor may change the address to which correspondence to it is to
be addressed by notification as provided for herein.

     (e) The parties acknowledge and agree that in the event of any breach of
this Agreement, remedies at law may be inadequate, and each of the parties
hereto shall be entitled to seek specific performance of the obligations of the
other parties hereto and such appropriate injunctive relief as may be granted by
a court of competent jurisdiction.

     (f) If any action at law or in equity is necessary to enforce or interpret
any of the terms of this Agreement, the prevailing party shall be entitled to
reasonable attorneys' fees, costs and necessary disbursements in addition to any
other relief to which such party may be entitled.

     (g) If any provision of this Agreement is held by a court of competent
jurisdiction to be unenforceable under applicable law, such provision shall be
replaced with a provision that accomplishes, to the extent possible, the
original business purpose of such provision in a valid and enforceable manner,
and the balance of the Agreement shall be interpreted as if such provision were
so modified and shall be enforceable in accordance with its terms.

     (h) Registrable Shares held or acquired by affiliated entities or persons
shall be aggregated together for the purpose of determining the availability of
any rights under this Agreement.

     (i) This Agreement may be executed in a number of counterparts, any of
which together shall for all purposes constitute one Agreement, binding on all
the parties hereto notwithstanding that all such parties have not signed the
same counterpart.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                       9

<PAGE>   10

     IN WITNESS WHEREOF, the parties hereto have executed this Registration
Rights Agreement as of the date and year first above written.

                                          CARDIAC PATHWAYS CORPORATION

                                          By: /s/ THOMAS M. PRESCOTT
                                            ------------------------------------
                                          Name: Thomas M. Prescott
                                          Title: President and Chief Executive
                                          Officer

                                          VAN WAGONER FUNDS

                                          By: /s/ AUDREY LAM BUCHNER
                                            ------------------------------------
                                          Name: Audrey Lam Buchner
                                          Title: Managing Director

                                          VAN WAGONER CAPITAL PARTNERS, L.P.
                                          by Van Wagoner Management LLC, its
                                          General
                                          Partner

                                          By: /s/ AUDREY LAM BUCHNER
                                            ------------------------------------
                                          Name: Audrey Lam Buchner
                                          Title:

                                          VAN WAGONER CROSSOVER FUND, LP
                                          by Van Wagoner Management LLC, its
                                          General
                                          Partner

                                          By: /s/ AUDREY LAM BUCHNER
                                            ------------------------------------
                                          Name: Audrey Lam Buchner
                                          Title:

                                          BANK OF AMERICA VENTURES

                                          By: /s/ MARK BROOKS
                                            ------------------------------------
                                          Name: Mark Brooks
                                          Title:  Principal

                                          BA VENTURE PARTNERS V

                                          By: /s/ MARK BROOKS
                                            ------------------------------------
                                          Name: Mark Brooks
                                          Title:  General Partner
                                       10

<PAGE>   11

                                          STATE OF WISCONSIN INVESTMENT BOARD

                                          By: /s/ JOHN F. NELSON
                                            ------------------------------------
                                          Name:  John F. Nelson
                                          Title: Investment Director

                                          SPECIAL SITUATIONS PRIVATE EQUITY
                                          FUND, L.P.

                                          By: /s/ DAVID GREENHOUSE
                                            ------------------------------------
                                          Name:  David Greenhouse
                                          Title: Managing Director

                                          MORGAN STANLEY VENTURE
                                          PARTNERS III, L.P.
                                          By: Morgan Stanley Venture Partners
                                              III, LLC
                                            its General Partner
                                          By: Morgan Stanley Venture Capital
                                              III, Inc.,
                                            its Institutional Managing Member

                                          By: /s/ DEBRA ABRAMOVITZ
                                            ------------------------------------
                                          Name:  Debra Abramovitz
                                          Title: Principal

                                          MORGAN STANLEY
                                          VENTURE INVESTORS III, L.P.
                                          By: Morgan Stanley Venture Partners
                                              III, LLC
                                            its General Partner
                                          By: Morgan Stanley Venture Capital
                                              III, Inc.,
                                            its Institutional Managing Member

                                          By: /s/ DEBRA ABRAMOVITZ
                                            ------------------------------------
                                          Name:  Debra Abramovitz
                                          Title: Principal

                                       11

<PAGE>   12

                                          THE MORGAN STANLEY VENTURE
                                          PARTNERS ENTREPRENEUR FUND, L.P.
                                          By: Morgan Stanley Venture Partners
                                              III, LLC
                                            its General Partner
                                          By: Morgan Stanley Venture Capital
                                              III, Inc.,
                                            its Institutional Managing Member

                                          By: /s/ DEBRA ABRAMOVITZ
                                            ------------------------------------
                                          Name:  Debra Abramovitz
                                          Title: Principal

                                          FARIA FUND LTD.

                                          By: /s/ MAI POGUE
                                            ------------------------------------
                                          Name:  Mai N. Pogue
                                          Title: Investment Manager

                                          TRELLIS HEALTH VENTURES, L.P.

                                          By: /s/ PAUL FELTON
                                            ------------------------------------
                                          Name:  Paul J. Felton
                                          Title: Manager

                                          FOGARTY FAMILY REVOCABLE TRUST

                                          By: /s/ THOMAS J. FOGARTY
                                            ------------------------------------
                                          Name:  Thomas J. Fogarty, M.D.
                                          Title: Trustee

                                       12

<PAGE>   13

                                   EXHIBIT A

                                FORM OF WARRANT

THIS WARRANT AND THE SHARES OF EQUITY SECURITIES THAT MAY BE PURCHASED PURSUANT
TO THE EXERCISE OF THIS WARRANT HAVE BEEN ACQUIRED FOR INVESTMENT AND HAVE NOT
BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES
ACT") OR ANY STATE SECURITIES LAWS AND MAY NOT BE OFFERED, SOLD, PLEDGED OR
TRANSFERRED UNLESS (I) THERE IS AN EFFECTIVE REGISTRATION STATEMENT COVERING
SUCH OFFER, SALE OR TRANSFER OR (II) THERE IS AN OPINION OF COUNSEL, REASONABLY
SATISFACTORY TO THE COMPANY, THAT AN EXEMPTION FROM THE REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT OR ANY APPLICABLE STATE SECURITIES LAWS FOR
SUCH OFFER, SALE OR TRANSFER IS AVAILABLE.

                                               VOID AFTER                ,

                          CARDIAC PATHWAYS CORPORATION
                         COMMON STOCK PURCHASE WARRANT
NO.       --                                                             ,

     THIS CERTIFIES THAT, for value received,                (together with its
permitted assignees, the "Holder") is entitled, upon the terms and subject to
the conditions hereinafter set forth, to subscribe for and purchase (subject to
Section 1 hereof) up to                shares (the "Shares") of fully paid and
nonassessable Common Stock, par value $0.001 per share, of Cardiac Pathways
Corporation, a Delaware corporation (the "Company"), at an exercise price of
$4.25 per Share (as the same may be adjusted from time to time in accordance
with Section 4 hereof, the "Exercise Price").

     The Warrant is one of a series of warrants (collectively, the "Warrants")
issued to certain investors of the Company, dated of even date herewith, in
accordance with the provisions of Section 4 of the Registration Rights Agreement
entered into between the Company and the Investors named therein and dated as of
November 3, 2000 (the "Registration Rights Agreement"). Any terms used herein
and not otherwise defined shall have the meanings ascribed thereto in the
Registration Rights Agreement.

     1. Expiration of Warrant. This Warrant shall expire and shall no longer be
exercisable at 5:00 p.m., local time in Santa Clara, California, on
                              ,      [5 YEARS AFTER THE DATE OF GRANT OF THE
WARRANT].

     2. Exercise of Warrant.

     (a) General. This Warrant may be exercised by the Holder as to the whole or
any lesser number of the Shares covered hereby, upon surrender of this Warrant
to the Company at its principal executive office together with the Notice of
Exercise and Investment Representation Statement attached hereto as Exhibit A,
duly completed and executed by the Holder, and payment to the Company of the
aggregate exercise price for the Shares to be purchased, as determined in
accordance with the terms hereof, in the form of (i) a check made payable to the
Company, (ii) a wire transfer according to the Company's instructions, or (iii)
any combination of (i) and (ii). The exercise of this Warrant shall be deemed to
have been effected on the day on which the Holder surrenders this Warrant to the
Company and satisfies all of the requirements of this Section 2. Upon such
exercise, the Holder will be deemed a stockholder of record of those Shares for
which the warrant has been exercised with all rights of a stockholder
(including, without limitation, all voting rights with respect to such Shares
and all rights to receive any dividends with respect to such Shares). If this
Warrant is to be exercised in respect of less than all of the Shares covered
hereby, the Holder shall be entitled to receive, and the Company shall issue, a
new warrant covering the number of Shares in respect of which this Warrant shall
not have been exercised and for which it remains subject to exercise. Such new
warrant shall be in all other respects identical to this Warrant.

                                       13

<PAGE>   14

     (b) Net Issue Exercise. In lieu of exercising this Warrant via cash
payment, the Holder may elect to receive Shares equal to the value of this
Warrant (or the portion thereof being canceled) by surrender of this Warrant at
the principal office of the Company together with notice of election to exercise
by means of a net issuance exercise, in which event the Company shall issue to
the Holder a number of Shares computed using the following formula:

<TABLE>
  <S>  <C>
  X =  Y (A - B)
           A
</TABLE>

<TABLE>
<S>    <C>  <C>  <C>
Where   X    =   the number of Shares to be issued to the Holder.
        Y    =   the number of Shares purchasable under this Warrant or, if
                 only a portion of the Warrant is being exercised, the
                 portion of the Warrant being cancelled (at the date of such
                 calculation).
        A    =   the Fair Market Value (as defined below) of one Share (at
                 the date of such calculation).
        B    =   the exercise price for the Shares (as adjusted to the date
                 of such calculation).
</TABLE>

     If the above calculation results in a negative number, then no Shares shall
be issued or issuable upon conversion of this Warrant.

     (c) Fair Market Value. For purposes of this Section 2, the "Fair Market
Value" of one Share shall be determined as follows: (i) if the Common Stock of
the Company is traded on a securities exchange, the Fair Market Value of one
Share shall be deemed to be the average of the closing prices of the Common
Stock of the Company on such exchange over the 30-day period ending five
business days prior to the date of determination of Fair Market Value; (ii) if
the Common Stock of the Company is traded on the Nasdaq Stock Market or other
over-the-counter system, the fair market value of the Common Stock shall be
deemed to be the average of the closing bid and asked prices of the Common Stock
of the Company over the 30-day period ending five business days prior to the
date of determination of Fair Market Value; and (iii) if there is no public
market for the Common Stock of the Company, then fair market value shall be
determined by mutual agreement of the Holder and the Company.

     (d) Stock Certificates. In the event of any exercise of the rights
represented by this Warrant, certificates for the Shares so purchased shall be
delivered to the Holder within a reasonable time, but in any event, not later
than ten business days after the date of exercise.

     3. Covenants of the Company. The Company covenants and agrees that: (i) all
Shares that may be issued upon the exercise of the rights represented by the
Warrants will, upon issuance pursuant to the terms and conditions herein, be
fully paid and nonassessable, free from all preemptive rights of any
stockholders, free from all taxes, liens and charges with respect to the issue
thereof and free and clear of any restrictions on transfer (other than under the
Securities Act and state securities laws); and (ii) that during the period
within which the rights represented by this Warrant may be exercised, the
Company will, at all times, have authorized, and reserved for the purpose of the
issue upon exercise of the purchase rights evidenced by this Warrant, a
sufficient number of shares of Common Stock to provide for the exercise of the
rights represented by this Warrant. The offer, sale and issuance of the Shares
issued on the exercise of this Warrant shall be exempt from the registration
requirements of the Securities Act and applicable state securities laws, and
neither the Company nor any authorized agent acting on its behalf has taken or
will take any action hereafter that would cause the loss of such exemption.

     4. Adjustment of Exercise Price and Number of Shares. The number and kind
of securities purchasable upon the exercise of this Warrant and the Exercise
Price therefor shall be subject to adjustment from time to time upon the
occurrence as follows:

          (a) Merger. If at any time there shall be a merger or consolidation of
     the Company with or into another corporation where the Company is not the
     surviving corporation or as a result of which all of the outstanding
     capital stock of the Company is exchanged for capital stock of another
     corporation or other entity, then, as a part of such merger or
     consolidation, lawful provision shall be made so that the holder of this
     Warrant shall thereafter be entitled to receive upon exercise of this
     Warrant, during the period specified herein and upon payment of the
     aggregate Exercise Price then in effect, the number of shares of

                                       14

<PAGE>   15

     stock or other securities or property of the surviving or successor
     corporation or other entity resulting from such merger or consolidation (or
     the corporation the capital stock of which is issued in exchange for the
     capital stock of the Company), to which a holder of the stock deliverable
     upon exercise of this Warrant would have been entitled in such merger or
     consolidation if this Warrant had been exercised immediately before such
     merger or consolidation and the surviving or successor corporation or other
     entity in such merger or consolidation shall duly execute and deliver to
     the Holder a supplement hereto acknowledging such corporation's or entity's
     obligations under this Warrant. In any such case, appropriate adjustment
     shall be made in the application of the provisions of this Warrant with
     respect to the rights and interests of the Holder after the merger or
     consolidation.

          (b) Reclassification, etc. If the Company shall, at any time, by
     subdivision, combination, or reclassification of securities or otherwise,
     change any of the securities as to which purchase rights under this Warrant
     exist into a different number of securities of the same class or classes or
     into the same or a different number of securities of any other class or
     classes, the Exercise Price shall be adjusted such that this Warrant shall
     thereafter represent the right to acquire such number and kind of
     securities as would have been issuable as the result of such change with
     respect to the securities which were subject to the purchase rights under
     this Warrant immediately prior to such subdivision, combination,
     reclassification or other change.

          (c) Split, Subdivision or Combination of Shares. If the Company at any
     time while this Warrant remains outstanding and unexpired shall split,
     subdivide or combine the securities as to which purchase rights under this
     Warrant exist, (i) the Exercise Price shall be proportionately decreased in
     the case of a split or subdivision or proportionately increased in the case
     of a combination, and (ii) the number of securities issuable upon exercise
     of this Warrant shall be proportionately increased in the case of a split
     or subdivision or proportionately decreased in the case of a combination.

          (d) Payment of Dividend. In case the Company shall make or issue, or
     shall fix a record date for the determination of eligible holders entitled
     to receive, a dividend or other distribution payable with respect to the
     Shares that is payable in (i) securities of the Company (other than
     issuances with respect to which adjustment is made under this Section 4),
     or (ii) assets (other than cash dividends paid or payable solely out of
     retained earnings), then, and in each such case, the Holder, upon exercise
     of this Warrant at any time after the consummation, effective date or
     record date of such event, shall receive, in addition to the Shares
     issuable upon such exercise prior to such date, the securities or such
     other assets of the Company to which the Holder would have been entitled
     upon such date if the Holder had exercised this Warrant immediately prior
     thereto (all subject to further adjustment as provided in this Warrant).

     5. Notice of Adjustments; Notices. Whenever the Exercise Price or number of
Shares issuable upon exercise hereof shall be adjusted pursuant to Section 4
hereof, the Company shall issue a written notice setting forth, in reasonable
detail, the event requiring the adjustment, the amount of the adjustment, the
method by which such adjustment was calculated and the Exercise Price and number
of Shares purchasable hereunder after giving effect to such adjustment, and
shall cause a copy of such notice to be mailed to the Holder. The form of this
Warrant need not be changed because of any adjustment in the Exercise Price or
the number of Shares issuable upon its exercise. The Company shall provide the
Holder with not less than 10 days prior written notice of (i) any event
resulting in an adjustment under Section 4 and (ii) any sale, lease or other
disposition of all or substantially all of the assets of the Company.

     6. No Fractional Shares or Scrip. No fractional shares or scrip
representing fractional shares shall be issued upon the exercise of this
Warrant. In lieu of any fractional share to which such Holder would otherwise be
entitled, such Holder shall be entitled, at its option, to receive either (a) a
cash payment equal to the excess of the Fair Market Value for such fractional
share above the Exercise Price for such fractional share (as mutually determined
by the Company and the Holder) or (b) a whole share if the Holder tenders the
Exercise Price for one whole share.

                                       15

<PAGE>   16

     7. Compliance with Securities Act; Disposition of Warrant or Shares of
Common Stock.

     (a) Compliance with Securities Act. The Holder, by acceptance hereof,
agrees that this Warrant, and the Shares to be issued upon exercise hereof are
being acquired for investment and that such Holder will not offer, sell or
otherwise dispose of this Warrant, or any Shares except under circumstances
which will not result in a violation of the Securities Act or any applicable
state securities laws. Upon exercise of this Warrant, unless the Shares being
acquired are registered under the Securities Act and any applicable state
securities laws or an exemption from such registration is available, the Holder
hereof shall confirm in writing that the Shares so purchased are being acquired
for investment and not with a view toward distribution or resale in violation of
the Securities Act and shall confirm such other matters related thereto as may
be reasonably requested by the Company. This Warrant and all Shares issued upon
exercise of this Warrant (unless registered under the Securities Act and any
applicable state securities laws) shall be stamped or imprinted with a legend in
substantially the following form:

     "THE SECURITIES REPRESENTED HEREBY HAVE BEEN ACQUIRED FOR INVESTMENT AND
     HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
     "SECURITIES ACT") OR ANY STATE SECURITIES LAWS AND MAY NOT BE OFFERED,
     SOLD, PLEDGED OR TRANSFERRED UNLESS (I) THERE IS AN EFFECTIVE REGISTRATION
     STATEMENT COVERING SUCH OFFER, SALE OR TRANSFER OR (II) THERE IS AN OPINION
     OF COUNSEL, REASONABLY SATISFACTORY TO THE COMPANY, THAT AN EXEMPTION FROM
     THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT OR ANY APPLICABLE STATE
     SECURITIES LAWS FOR SUCH OFFER, SALE OR TRANSFER IS AVAILABLE."

     Said legend shall be removed by the Company, upon the request of a Holder,
at such time as the restrictions on the transfer of the applicable security
shall have terminated. In addition, in connection with the issuance of this
Warrant, the Holder specifically represents to the Company by acceptance of this
Warrant as follows:

          (i) The Holder is aware of the Company's business affairs and
     financial condition, and has acquired information about the Company
     sufficient to reach an informed and knowledgeable decision to acquire this
     Warrant. The Holder is acquiring this Warrant for its own account for
     investment purposes only and not with a view to, or for the resale in
     connection with, any "distribution" thereof in violation of the Securities
     Act.

          (ii) The Holder understands that this Warrant has not been registered
     under the Securities Act in reliance upon a specific exemption therefrom,
     which exemption depends upon, among other things, the bona fide nature of
     the Holder's investment intent as expressed herein.

          (iii) The Holder further understands that this Warrant must be held
     indefinitely unless subsequently registered under the Securities Act and
     qualified under any applicable state securities laws, or unless exemptions
     from registration and qualification are otherwise available. The Holder is
     aware of the provisions of Rule 144, promulgated under the Securities Act.

          (iv) The Holder is an "accredited investor" as such term is defined in
     Rule 501 of Regulation D promulgated under the Securities Act.

     (b) Transfer of Warrant. This Warrant may be transferred or assigned by the
Holder, in whole or in part, provided that the Holder (i) provides written
notice to the Company prior to such transfer or assignment, and (ii) delivers to
the Company, on the Company's reasonable request, a written opinion of such
Holder's counsel reasonably satisfactory to the Company (or other evidence
reasonably satisfactory to the Company) that such transfer does not require
registration or qualification under the Securities Act and any applicable state
securities law; provided, however, that this Warrant may be transferred by (i) a
Holder which is a partnership or limited liability company to a partner, former
partner, member, former member, or other affiliate of such partnership or
limited liability company, as the case may be, or (ii) a Holder to any
corporation or partnership controlling, controlled by, or under common
investment management with such Holder, if, in each case, (a) the transferee
agrees in writing to be subject to the terms of this Warrant; and
                                       16

<PAGE>   17

(b) the Holder delivers notice of such transfer to the Company. The rights and
obligations of the Company and the Holder under this Warrant shall be binding
upon and benefit their respective permitted successors, assigns, heirs,
administrators and transferees.

     8. Rights as Stockholders; Information. No Holder, as such, shall be
entitled to vote or receive dividends or be deemed the holder of Common Stock or
any other securities which may at any time be issuable on the exercise hereof
for any purpose, nor shall anything contained herein be construed to confer upon
the Holder, as such, any of the rights of a stockholder of the Company or any
right to vote for the election of directors or upon any matter submitted to
stockholders at any meeting thereof, or to receive notice of meetings, or to
receive dividends or subscription rights or otherwise until this Warrant shall
have been exercised and the Shares purchasable upon the exercise hereof shall
have become deliverable, as provided herein.

     9. Lost Warrants or Stock Certificates. The Company covenants to the Holder
that, upon receipt of evidence reasonably satisfactory to the Company of the
loss, theft, destruction or mutilation of this Warrant or any stock certificate
and, in the case of any such loss, theft or destruction, upon receipt of an
indemnity reasonably satisfactory to the Company, or in the case of any such
mutilation upon surrender and cancellation of such Warrant or stock certificate,
the Company will make and deliver a new Warrant or stock certificate, of like
tenor, in lieu of the lost, stolen, destroyed or mutilated Warrant or stock
certificate.

     10. Saturdays, Sundays, Holidays, etc. If the last or appointed day for the
taking of any action or the expiration of any right required or granted herein
shall be a Saturday or a Sunday or shall be a legal holiday, then such action
may be taken or such right may be exercised on the next succeeding day not a
Saturday or a Sunday or a legal holiday.

     11. Miscellaneous.

     (a) Successors and Assigns. This Warrant shall be binding upon any
successors or assigns of the Company.

     (b) Governing Law. This Warrant shall be governed by and construed in
accordance with the laws of the State of California without giving effect to the
conflict of laws principles thereof.

     (c) Attorneys' Fees. In any litigation, arbitration, or court proceeding
between the Company and a Holder relating hereto, the prevailing party shall be
entitled to reasonable fees and expenses incurred in enforcing this Warrant,
including attorney's fees.

     (d) Amendments. This Warrant may be amended and the observance of any term
of this Warrant may be waived only with the written consent of the Company and
the Majority Holders.

     (e) Notices

          (i) Any notices, reports or other correspondence (hereinafter
     collectively referred to as "correspondence") required or permitted to be
     given hereunder shall be sent by postage prepaid first class mail,
     overnight courier or telecopy or delivered by hand to the party to whom
     such correspondence is required or permitted to be given hereunder. Any
     notice or other communication delivered by hand shall be deemed to have
     been delivered and received on the date on which such notice or
     communication is actually received, or in the case of certified mail
     deposited with the appropriate postal authorities on the date when such
     notice or communication is actually received, and in any other case shall
     be deemed to have been delivered on the date on which such notice or
     communication is actually received.

        (ii) All correspondence to the Company shall be addressed as follows:
           Cardiac Pathways Corporation
           995 Benecia Avenue
           Sunnyvale, California 94086
           Facsimile: (408) 737-1700
             Attention: Eldon Bullington, Chief Financial Officer

                                       17

<PAGE>   18

             with a copy to:

             Wilson Sonsini Goodrich & Rosati
           650 Page Mill Road
           Palo Alto, California 94304
           Facsimile: (650) 845-5000
           Attention: Chris F. Fennell

          (iii) All correspondence to any Holder shall be sent to such Holder at
     the address set forth under such Holder's name on the signature page
     hereto.

          (iv) Any party may, at any time, by providing ten days' advance notice
     to the other party hereto, designate any other address in substitution of
     an address established pursuant to the foregoing.

     (f) Severability. If one or more provisions of this Warrant are held to be
unenforceable under applicable law, such provision(s) shall be excluded from
this Warrant and the balance of the Warrant shall be interpreted as if such
provision(s) were so excluded and shall be enforceable in accordance with its
terms.

     (g) Registration Rights. All Shares issuable upon exercise of this Warrant
shall be deemed to be "Registrable Shares" or such other definition of
securities entitled to registration rights pursuant to the Registration Rights
Agreement, and are entitled, subject to the terms and conditions of that
agreement, to all registration rights granted to holders of Registrable Shares
thereunder.

     (h) No Impairment. The Company will not, by amendment of its Amended and
Restated Certificate of Incorporation or Bylaws, or through reorganization,
consolidation, merger, dissolution, issue or sale of securities, sale of assets
or any other voluntary action, avoid or seek to avoid the observance or
performance of any of the terms of this Warrant, but will at all times in good
faith assist in the carrying out of all such terms and in the taking of all such
action as may be necessary or appropriate in order to protect the rights of the
Holder of this Warrant against impairment. Without limiting the generality of
the foregoing, the Company will take all such action as may be necessary or
appropriate in order that the Company may validly and legally issue fully paid
and non-assessable Shares upon exercise of this Warrant.

               [REMAINDER OF THIS PAGE INTENTIONALLY LEFT BLANK]

                                       18

<PAGE>   19

     IN WITNESS WHEREOF, the Company and the Holder have caused this Common
Stock Purchase Warrant to be executed as of the date first above written.

                                          CARDIAC PATHWAYS CORPORATION

                                          By:
                                          --------------------------------------

                                          Name:
                                          --------------------------------------

                                          Title:
                                          --------------------------------------

ACKNOWLEDGED AND AGREED:

[NAME OF HOLDER]

By:
----------------------------------------------------

Name:
-------------------------------------------------

Title:
--------------------------------------------------

Address:
-----------------------------------------------

Telephone:
--------------------------------------------

Facsimile:
---------------------------------------------

                                       19

<PAGE>   20

                                   EXHIBIT A

                               NOTICE OF EXERCISE
                            COMMON STOCK WARRANT AND
                      INVESTMENT REPRESENTATION STATEMENT

To: Cardiac Pathways Corporation

     1. Exercise Notice. The undersigned hereby elects to purchase
               shares of Common Stock (the "Shares") of Cardiac Pathways
Corporation (the "Company") pursuant to the terms of the attached Warrant, and
(check the applicable box):

[ ] Tenders herewith payment of the exercise price in full in the form of cash
    or a certified or official bank check in same-day funds in the amount of
    $          for                shares of such securities and any transfer
    taxes payable pursuant to the terms of the Warrant.

[ ] Elects the Net Issue Exercise option pursuant to Section 2(b) of the
    Warrant, and accordingly requests delivery of a net of                shares
    of such securities.

     2. Investment Representation Statement. Any terms used herein and not
otherwise defined shall have the meanings ascribed thereto in that certain
Registration Rights Agreement entered into between the Company and those
Investors named therein and dated as of November 3, 2000 (the "Registration
Rights Agreement"). In connection with the purchase of the above-listed Shares,
the undersigned represents to the Company the following:

          (a) The Holder is aware of the Company's business affairs and
     financial condition, and has acquired information about the Company
     sufficient to reach an informed and knowledgeable decision to acquire the
     Shares. The Holder is acquiring the Shares for its own account for
     investment purposes only and not with a view to, or for the resale in
     connection with, any "distribution" thereof in violation of the Securities
     Act.

          (b) The Holder understands that these Shares have not been registered
     under the Securities Act in reliance upon a specific exemption therefrom,
     which exemption depends upon, among other things, the bona fide nature of
     the Holder's investment intent as expressed herein.

          (c) The Holder further understands that these Shares must be held
     indefinitely unless subsequently registered under the Securities Act and
     qualified under any applicable state securities laws, or unless exemptions
     from registration and qualification are otherwise available. The Holder is
     aware of the provisions of Rule 144, promulgated under the Securities Act.

          (d) The Holder is an "accredited investor" as such term is defined in
     Rule 501 of Regulation D promulgated under the Securities Act.

     3. Legend. The undersigned understands the instruments evidencing the
Shares may bear the following legend, in addition to any legend required by
applicable state securities laws:

     "THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED FOR
     INVESTMENT AND HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933,
     AS AMENDED (THE "SECURITIES ACT") OR ANY STATE SECURITIES LAWS AND MAY NOT
     BE OFFERED, SOLD, PLEDGED OR TRANSFERRED UNLESS (I) THERE IS AN EFFECTIVE
     REGISTRATION STATEMENT COVERING SUCH OFFER, SALE OR TRANSFER OR (II) THERE
     IS AN OPINION OF COUNSEL, REASONABLY SATISFACTORY TO THE COMPANY, THAT AN
     EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT OR ANY
     APPLICABLE STATE SECURITIES LAWS FOR SUCH OFFER, SALE OR TRANSFER IS
     AVAILABLE."

                                       20

<PAGE>   21

     4. Name of Registered Certificate Holder. Please issue a certificate or
certificates representing said shares of Stock in the name of the undersigned:

        Name:
        ---------------------------------------------------

        Address:
        -------------------------------------------------

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

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

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

     IN WITNESS WHEREOF, the Holder has executed this Notice of Exercise and
Investment Representation Statement effective this      day of                ,
       .

                                          WARRANT HOLDER

                                          By:
                                          --------------------------------------

                                          Name:
                                          --------------------------------------

                                          Title:
                                          --------------------------------------

                                       21

<PAGE>   22

                                   EXHIBIT B

                                ASSIGNMENT FORM

            (To assign the foregoing Common Stock Purchase Warrant,
   execute this form and supply required information. Do not use this form to
                               purchase shares.)

     FOR VALUE RECEIVED, the foregoing Warrant and all rights evidenced thereby
are hereby assigned to

--------------------------------------------------------------------------------
                                 (Please Print)

whose address is
--------------------------------------------------------------------------------
                                 (Please Print)

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

Dated:
--------------- ,
------

                                          Holder's Signature:

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

                                          Holder's Address:

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

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

                                          Signature Guaranteed:

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

     NOTE: The signature to this Assignment Form must correspond with the name
as it appears on the face of the Warrant, without alteration or enlargement or
any change whatever, and must be guaranteed by a bank or trust company. Officers
of corporations and those acting in a fiduciary or other representative capacity
should file proper evidence of authority to assign the foregoing Warrant.

                                       22

<PAGE>   23

                                   EXHIBIT B

                            INSTRUMENT OF ADHERENCE

     Reference is hereby made to that certain Registration Rights Agreement,
dated as of             , 2000, among Cardiac Pathways Corporation, a Delaware
corporation (the "Company"), the Initial Investors and the Investor Permitted
Transferees, as amended and in effect from time to time (the "Registration
Rights Agreement"). Capitalized terms used herein without definition shall have
the respective meanings ascribed thereto in the Registration Rights Agreement.

     The undersigned, in order to become the owner or holder of
shares of common stock, par value $0.001 per share (the "Common Stock"), of the
Company, hereby agrees that, from and after the date hereof, the undersigned has
become a party to the Registration Rights Agreement in the capacity of an
Investor Permitted Transferee, and is entitled to all of the benefits under, and
is subject to all of the obligations, restrictions and limitations set forth in,
the Registration Rights Agreement that are applicable to Investor Permitted
Transferees. This Instrument of Adherence shall take effect and shall become a
part of the Registration Rights Agreement immediately upon execution.

     Executed under seal as of the date set forth below under the laws of
            .

                                          Signature:
                                          --------------------------------------
                                               Name:
                                               Title:

Accepted:

COMPANY

By:
--------------------------------------
     Name: [name]
     Title: President and Chief
Executive Officer

Date:
--------------------------------------

                                       23

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