Document:

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                                                                   Exhibit 10.20

                                E.PIPHANY, INC.

                  FORM OF CHANGE OF CONTROL SEVERANCE AGREEMENT

        This Change of Control Severance Agreement (the "Agreement") is made and
entered into by and between _______________ (the "Employee") and E.piphany, Inc.
(the "Company"), effective as of the latest date set forth by the signatures of
the parties hereto below.

        WHEREAS, the Board of Directors of the Company (the "Board") may from
time to time consider the possibility of an acquisition of the Company by
another company or another change of control as a means of enhancing stockholder
value.

        WHEREAS, the Board recognizes that such consideration can be a
distraction to the Employee and cause the Employee to consider alternative
employment opportunities.

        WHEREAS, the Board believes that it is imperative to provide the
Employee with certain severance benefits upon Employee's termination of
employment following a Change of Control which provides the Employee with
enhanced financial security and provides incentive and encouragement to the
Employee to remain with the Company notwithstanding the possibility of a Change
of Control.

        WHEREAS, certain capitalized terms used in the Agreement are defined in
Section 6 below.

        NOW THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto agree as
follows:

1. Term of Agreement. This Agreement shall terminate upon the date that all
obligations of the parties hereto with respect to this Agreement have been
satisfied.

2. At-Will Employment. The Company and the Employee acknowledge that the
Employee's employment is and shall continue to be at-will, as defined under
applicable law. If the Employee's employment terminates for any reason,
including (without limitation) any termination prior to the announcement of a
Change of Control, the Employee shall not be entitled to any payments, benefits,
damages, awards or compensation except for those payments that may be available
in accordance with the Company's established employee plans and practices,
pursuant to other agreements with the Company or pursuant to applicable law.

3. Severance Benefits.

        (a) Termination In Connection With A Change of Control. If the
Employee's employment is terminated by the Company without Cause or the Employee
resigns for Good Reason, at any time after the announcement of a Change of
Control and before eighteen (18) months following a Change of Control (a
"Severance Termination"), then, subject to Section 5, the Employee shall be
entitled to receive the following severance benefits:

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               (1) Severance Payment. A cash payment in an amount equal to one
hundred percent (100%) of the Employee's Annual Compensation plus a payment of
fifty percent (50%) of the then current year target bonus for the Employee.

               (2) Continued Employee Benefits. One hundred percent (100%)
Company-paid health, dental and life insurance coverage at the same level of
coverage as was provided to such employee immediately prior to the Termination
Date (the "Company-Paid Coverage"). If such coverage included the Employee's
dependents immediately prior to the Termination, such dependents shall also be
covered at Company expense. Company-Paid Coverage shall continue until the
earlier of (i) twelve (12) months from the Termination Date, or (ii) the date
that the Employee and his or her dependents become covered under another
employer's group health, dental or life insurance plans that provide Employee
and his or her dependents with comparable benefits and levels of coverage. For
purposes of Title X of the Consolidated Budget Reconciliation Act of 1985
("COBRA"), the date of the "qualifying event" for Employee and his or her
dependents shall be the date upon which the Company-Paid Coverage terminates.

               (3) Stock Option/Restricted Stock Accelerated Vesting. The
vesting of all outstanding stock options or restricted stock awards held by
Employee (collectively the "Options") extended to Employee under an approved
Company plan or program shall accelerate by twelve (12) months as of the
Termination Date (but, in no event, shall the Options become vested and
exercisable as to more than one hundred percent (100%) of the shares subject to
such Options). In the event that Employee is entitled to accelerated vesting of
a particular Option pursuant to the terms of both the applicable option (or
other) agreement and this Agreement, the vesting of the Option shall be
accelerated in accordance with whichever agreement (i.e, this Agreement or the
applicable agreement) results in greater economic value being delivered to the
Employee. (However, in no event shall the Employee be entitled to accelerated
vesting under both such agreements.) In addition, under no circumstances shall
any Option become vested and exercisable as to more than one hundred percent
(100%) of the shares subject to such Option. Employee's stock options shall
remain exercisable for such period of time as is prescribed in the respective
stock option agreements.

               (4) Timing of Severance Payments. Any severance payment to which
Employee is entitled under Section 3(a)(1) shall be paid by the Company to the
Employee (or to the Employee's successor in interest, pursuant to Section 7(b))
in cash and in full, not later than thirty (30) calendar days following the
Termination Date, subject to Section 9(f).

        (b) Voluntary Resignation; Termination For Cause. If the Employee's
employment terminates by reason of the Employee's voluntary resignation (and is
not a Severance Termination), or if the Employee is terminated for Cause, then
the Employee shall not be entitled to receive severance or other benefits except
for those (if any) as may then be established under the Company's then existing
option, severance and benefits plans and practices, pursuant to other agreements
with the Company or pursuant to applicable law.

        (c) Disability; Death. If the Company terminates the Employee's
employment as a result of the Employee's Disability, or such Employee's
employment is terminated due to the death of the Employee, then the Employee
shall not be entitled to receive severance or other benefits except for

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those (if any) as may then be established under the Company's then existing
severance and benefits plans and practices or pursuant to other agreements with
the Company.

        (d) Termination Apart from Change of Control. In the event the
Employee's employment is terminated for any reason, either prior to the
announcement of a Change of Control or after the eighteen (18) month period
following a Change of Control, then the Employee shall be entitled to receive
severance and any other benefits only as may then be established under the
Company's existing severance and benefits plans and practices, pursuant to other
agreements with the Company or pursuant to applicable law.

4. Attorney Fees, Costs and Expenses. The Company shall reimburse Employee for
the reasonable attorney fees, costs and expenses incurred by the Employee in
connection with any action brought by Employee to enforce his or her rights
hereunder, provided such action is not decided in favor of the Company.

5. Limitation on Payments.

        (a) In the event that the severance and other benefits provided for in
this Agreement or otherwise payable to the Employee (i) constitute "parachute
payments" within the meaning of Section 280G of the Internal Revenue Code of
1986, as amended (the "Code") and (ii) but for this Section 5, would be subject
to the excise tax imposed by Section 4999 of the Code, then the Employee's
severance benefits under Section 3(a)(1) shall be either

               (A)    delivered in full, or

               (B)    delivered as to such lesser extent which would result in
                      no portion of such severance benefits being subject to
                      excise tax under Section 4999 of the Code, whichever of
                      the foregoing amounts, taking into account the applicable
                      federal, state and local income taxes and the excise tax
                      imposed by Section 4999, results in the receipt by the
                      Employee on an after-tax basis, of the greatest amount of
                      severance benefits, notwithstanding that all or some
                      portion of such severance benefits may be taxable under
                      Section 4999 of the Code. Any taxes due under Section 4999
                      shall be the responsibility of the employee.

        (b) If a reduction in the payments and benefits that would otherwise be
paid or provided to the Employee under the terms of this Agreement is necessary
to comply with the provisions of Section 5(a), the Employee shall be entitled to
select which payments or benefits will be reduced and the manner and method of
any such reduction of such payments or benefits (including but not limited to
the number of options that would vest under Section 3(a)) subject to reasonable
limitations (including, for example, express provisions under the Company's
benefit plans) (so long as the requirements of Section 5(a) are met). Within
thirty (30) days after the amount of any required reduction in payments and
benefits is finally determined in accordance with the provisions of Section
5(c), the Employee shall notify the Company in writing regarding which payments
or benefits are to be reduced. If no notification is given by the Employee, the
Company will determine which amounts to reduce. If, as a result of any reduction
required by Section 5(a), amounts

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previously paid to the Employee exceed the amount to which the Employee is
entitled, the Employee will promptly return the excess amount to the Company.

        (c) Unless the Company and the Employee otherwise agree in writing, any
determination required under this Section 5 shall be made in writing by the
Company's accountants immediately prior to Change of Control, whose
determination shall be conclusive and binding upon the Employee and the Company
for all purposes. For purposes of making the calculations required by this
Section 5, the accountants may, after taking into account the information
provided by the Employee, make reasonable assumptions and approximations
concerning applicable taxes and may rely on reasonable, good faith
interpretations concerning the application of Sections 280G and 4999 of the
Code. The Company and the Employee shall furnish to the accountants such
information and documents as the accountants may reasonably request in order to
make a determination under this Section. The Company shall bear all costs the
accountants may reasonably incur in connection with any calculations
contemplated by this Section 5.

6. Definition of Terms. The following terms referred to in this Agreement shall
have the following meanings:

        (a) Annual Compensation. "Annual Compensation" means an amount equal to
the greater of (i) Employee's Company base salary for the twelve (12) months
preceding the Change of Control or (ii) Employee's current Company base salary
on an annualized basis.

        (b) Cause. "Cause" shall mean (i) any act of personal dishonesty taken
by the Employee in connection with his responsibilities as an employee and
intended to result in significant personal enrichment of the Employee, (ii) the
conviction of, or a plea of "guilty" or "no contest" to, a felony under the laws
of the United States, any state thereof or any foreign country, which conviction
or plea negatively and materially reflects on the Employee's fitness to perform
his or her duties or materially harms the Company's reputation or financial
status, (iii) willful misconduct by the Employee that is materially injurious to
the Company, (iv) any act of fraud, dishonesty or moral turpitude by the
Employee that is materially injurious to the Company; or (v) for a period of not
less than thirty (30) days following delivery to the Employee of a written
demand for performance from the Company that describes the basis for the
Company's belief that the Employee has not substantially performed his duties,
continued violations by the Employee of the Employee's obligations to the
Company that are demonstrably willful and deliberate on the Employee's part. Any
dismissal for cause in accordance with Subsection (v) of this definition must be
approved by the Company's Board of Directors prior to the dismissal date.

        (c) Change of Control. "Change of Control" means the occurrence of any
of the following events:

               (1) Any "person" (as such term is used in Sections 13(d) and
14(d) of the Securities Exchange Act of 1934, as amended) becomes the
"beneficial owner" (as defined in Rule 13d-3 under said Act), directly or
indirectly, of securities of the Company representing fifty percent (50%) or
more of the total voting power represented by the Company's then outstanding
voting securities;

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               (2) A change in the composition of the Board occurring within a
twelve-month period, as a result of which fewer than a majority of the directors
are Incumbent Directors. "Incumbent Directors" shall mean directors who either
(A) are directors of the Company as of the date hereof, or (B) are appointed,
elected, or nominated for election, to the Board with the affirmative votes of
at least a majority of the Incumbent Directors at the time of such election or
nomination (but shall not include an individual whose election or nomination is
in connection with an actual or threatened proxy contest relating to the
election of directors to the Company);

               (3) The consummation of a merger or consolidation of the Company
with any other corporation, other than a merger or consolidation that would
result in the voting securities of the Company outstanding immediately prior
thereto continuing to represent (either by remaining outstanding or by being
converted into voting securities of the surviving entity or such surviving
entity's parent) at least fifty percent (50%) of the total voting power
represented by the voting securities of the Company or such surviving entity or
such surviving entity's parent outstanding immediately after such merger or
consolidation;

               (4) The consummation of the sale or disposition by the Company of
all or seventy-five percent (75%) or more of the Company's assets.

        (d) Disability. "Disability" shall mean that the Employee has been
unable to perform his or her Company duties as the result of his or her
incapacity due to physical or mental illness, and such inability, at least
twenty-six (26) weeks after its commencement, is determined to be total and
permanent by a physician selected by the Company or its insurers and acceptable
to the Employee or the Employee's legal representative (such Agreement as to
acceptability not to be unreasonably withheld). Termination resulting from
Disability may only be effected after at least thirty (30) days' written notice
by the Company of its intention to terminate the Employee's employment. In the
event that the Employee resumes the performance of substantially all of his or
her duties hereunder before the termination of his or her employment becomes
effective, the notice of intent to terminate shall automatically be deemed to
have been revoked.

        (e) Good Reason. "Good Reason" means, without the Employee's express
written consent, any of the following events:

            (i)   a material reduction by the Company of the impact and nature
                  of Employee's duties, responsibilities or authority, relative
                  to the impact and nature of the Employee's duties,
                  responsibilities or authority as in effect immediately prior
                  to the Change of Control;

            (ii)  a reduction by the Company in the base salary or target bonus
                  opportunity of the Employee as in effect immediately prior to
                  the Change in Control;

            (iii) a material reduction by the Company in the kind or level of
                  employee benefits (i.e., health, vision, life, 401k or the
                  like) to which the Employee was entitled immediately prior to
                  the Change of Control; or

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            (iv)  the relocation by the Company of the Employee's location of
                  employment to a facility or a location more than fifty (50)
                  miles from the Employee's location of employment immediately
                  prior to the Change of Control.

        (f) Termination Date. "Termination Date" shall mean (i) if this
Agreement is terminated by the Company for Disability, thirty (30) days after
notice of termination is given to the Employee (provided that the Employee shall
not have returned to the performance of the Employee's duties on a full-time
basis during such thirty (30)-day period), (ii) if the Employee's employment is
terminated by the Company for any other reason, the date on which a notice of
termination is given to Employee, or (iii) if the Agreement is terminated by the
Employee, the date on which the Employee delivers the notice of termination to
the Company.

7. Successors.

        (a) Company's Successors. Any successor to the Company (whether direct
or indirect and whether by purchase, merger, consolidation, liquidation or
otherwise) to all or substantially all of the Company's business and/or assets
shall assume the obligations under this Agreement and agree expressly to perform
the obligations under this Agreement in the same manner and to the same extent
as the Company would be required to perform such obligations in the absence of a
succession. For all purposes under this Agreement, the term "Company" shall
include any successor to the Company's business and/or assets which executes and
delivers the assumption agreement described in this Section 7(a) or which
becomes bound by the terms of this Agreement by operation of law.

        (b) Employee's Successors. The terms of this Agreement and all rights of
the Employee hereunder shall inure to the benefit of, and be enforceable by, the
Employee's personal or legal representatives, executors, administrators,
successors, heirs, distributees, devisees and legatees.

8. Notice.

        (a) General. Notices and all other communications contemplated by this
Agreement shall be in writing and shall be deemed to have been duly given when
personally delivered or when mailed by U.S. registered or certified mail, return
receipt requested and postage prepaid. In the case of the Employee, mailed
notices shall be addressed to him at the home address that he most recently
communicated to the Company in writing. In the case of the Company, mailed
notices shall be addressed to its corporate headquarters, and all notices shall
be directed to the attention of its Secretary.

        (b) Notice of Termination. Any termination by the Company for Cause or
by the Employee as a result of a voluntary resignation or an Involuntary
Termination shall be communicated by a notice of termination to the other party
hereto given in accordance with Section 8(a) of this Agreement. Such notice
shall indicate the specific termination provision in this Agreement relied upon,
shall set forth in reasonable detail the facts and circumstances claimed to
provide a basis for termination under the provision so indicated, and shall
specify the termination date (which shall be not more than thirty (30) days
after the giving of such notice). The failure by the Employee to include in the
notice any fact or circumstance which contributes to a showing of

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Involuntary Termination shall not waive any right of the Employee hereunder or
preclude the Employee from asserting such fact or circumstance in enforcing his
or her rights hereunder.

9. Miscellaneous Provisions.

        (a) No Duty to Mitigate. The Employee shall not be required to mitigate
the amount of any payment contemplated by this Agreement, nor shall any such
payment be reduced by any earnings that the Employee may receive from any other
source.

        (b) Waiver. No provision of this Agreement shall be modified, waived or
discharged unless the modification, waiver or discharge is agreed to in writing
and signed by the Employee and by an authorized officer of the Company (other
than the Employee). No waiver by either party of any breach of, or of compliance
with, any condition or provision of this Agreement by the other party shall be
considered a waiver of any other condition or provision or of the same condition
or provision at another time.

        (c) Whole Agreement. This Agreement and any outstanding stock option,
stock purchase or related agreements, represent the entire understanding of the
parties hereto with respect to the subject matter hereof and supersedes all
prior arrangements and understandings regarding same. Other than the agreements
described in the preceding sentence, no agreements, representations or
understandings (whether oral or written and whether express or implied) which
are not expressly set forth in this Agreement have been made or entered into by
either party with respect to the subject matter hereof.

        (d) Choice of Law. The validity, interpretation, construction and
performance of this Agreement shall be construed and enforced in accordance
with, and the rights of the parties shall be governed by, the laws of the State
of California without regard to principles of conflicts of laws.

        (e) Severability. The invalidity or unenforceability of any provision or
provisions of this Agreement shall not affect the validity or enforceability of
any other provision hereof, which shall remain in full force and effect.

        (f) Withholding. All payments made pursuant to this Agreement will be
subject to withholding of applicable income and employment taxes.

        (g) Counterparts. This Agreement may be executed in counterparts, each
of which shall be deemed an original, but all of which together will constitute
one and the same instrument.

            [The remainder of this page is intentionally left blank]

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        IN WITNESS WHEREOF, each of the parties has executed this Agreement on
the dates indicated below.

COMPANY                            E.PIPHANY, INC.

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

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

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

EMPLOYEE:                          -------------------------------------------
                                   Name:

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

                                      8<PAGE>
                                                                   EXHIBIT 10.21

                        E.PIPHANY, INC. 1999 STOCK PLAN

             NOTICE OF STOCK OPTION GRANT AND STOCK OPTION AGREEMENT

                                 NOTICE OF GRANT

Optionee:      Karen A. Richardson
               239 Lennox Avenue
               Menlo Park, CA 94025

        You have been granted an option to purchase Common Stock of the Company,
subject to the terms and conditions of the Plan and this Notice of Grant which
is part of the attached Option Agreement, as follows:

<TABLE>
<S>                                         <C>
        Grant Number                        1522
                                            ----------------------
        Date of Grant                       April 17, 2001
                                            ----------------------
        Vesting Commencement Date           April 17, 2001
                                            ----------------------
        Exercise Price per Share            $9.90
                                            ----------------------
        Total Number of Shares Granted      300,000
                                            ----------------------
        Total Exercise Price                $2,970,000
                                            ----------------------
        Type of Option:                     [ ] Incentive Stock Option     [X] Nonstatutory Stock Option

        Term/Expiration Date:               April 17, 2011
                                            ----------------------
</TABLE>

     Vesting Schedule: This option (the "Option") may be exercised, in whole or
in part, in accordance with the following schedule:

        50% OF THE SHARES SUBJECT TO THE OPTION SHALL VEST TWO (2) YEARS AFTER
THE VESTING COMMENCEMENT DATE, AND 1/48 OF THE SHARES SUBJECT TO THE OPTION
SHALL VEST EACH MONTH THEREAFTER, SUBJECT TO THE OPTIONEE CONTINUING TO BE A
SERVICE PROVIDER ON SUCH DATES; PROVIDED, HOWEVER, PRIOR TO THE DATE WHICH IS
TWO (2) YEARS AFTER THE DATE OF GRANT, SHOULD (i) THERE BE A CHANGE OF CONTROL
(AS DEFINED BELOW) OF THE COMPANY AND (ii) OPTIONEE CEASES TO BE A SERVICE
PROVIDER TO THE COMPANY OR ITS SUCCESSOR FOLLOWING AN INVOLUNTARY TERMINATION
(AS DEFINED BELOW) OTHER THAN FOR CAUSE (AS DEFINED BELOW) FOLLOWING SUCH CHANGE
OF CONTROL, BUT PRIOR TO THE DATE WHICH IS TWO (2) YEARS AFTER THE DATE OF
GRANT, THEN A TOTAL OF 50% OF THE SHARES SUBJECT TO THE OPTION SHALL VEST AT THE
TIME THAT OPTIONEE CEASES TO BE A SERVICE PROVIDER.

        Termination Period: This Option may be exercised for three months after
Optionee ceases to be a Service Provider. Upon the death or Disability of the
Optionee, this Option may be exercised for twelve months after Optionee ceases
to be a Service Provider. In no event shall this Option be exercised later than
the Term/Expiration Date as provided above.

     Definitions: Unless otherwise defined herein, the terms defined in the Plan
shall have the same defined meanings in this Option Agreement.

     "Cause" shall mean (i) any act of personal dishonesty taken by the Optionee
     in connection with his responsibilities as an employee and intended to
     result in significant personal enrichment of the Optionee, (ii) the
     conviction of, or a plea of "guilty" or "no contest" to, a felony under the
     laws of the United States, any state thereof or any foreign country, (iii)
     willful misconduct by the Optionee that is materially injurious to the
     Company, (iv) any act of fraud, dishonesty or moral turpitude by the
     Optionee that is materially injurious to the Company; or (v) for a period
     of not less than thirty (30) days following delivery to the Optionee of a
     written demand for performance from the Company that describes the basis
     for the Company's belief that the Optionee has not substantially performed
     his duties, continued violations by the Optionee of the Optionee's
     obligations to the Company that are demonstrably willful and deliberate on
     the Optionee's part. Any dismissal for cause in accordance with Subsection
     (v) of this definition must be approved by the Company's Board of Directors
     prior to the dismissal date.

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     "Change of Control" means the occurrence of any of the following events:

          (1) Any "person" (as such term is used in Sections 13(d) and 14(d) of
     the Securities Exchange Act of 1934, as amended) becomes the "beneficial
     owner" (as defined in Rule 13d-3 under said Act), directly or indirectly,
     of securities of the Company representing fifty percent (50%) or more of
     the total voting power represented by the Company's then outstanding voting
     securities;

          (2) The consummation of a merger or consolidation of the Company with
     any other corporation, other than a merger or consolidation that would
     result in the voting securities of the Company outstanding immediately
     prior thereto continuing to represent (either by remaining outstanding or
     by being converted into voting securities of the surviving entity or such
     surviving entity's parent) at least fifty percent (50%) of the total voting
     power represented by the voting securities of the Company or such surviving
     entity or such surviving entity's parent outstanding immediately after such
     merger or consolidation; or

          (3) The consummation of the sale or disposition by the Company of all
     or at least seventy-five percent (75%) or more of the Company's assets.

     "Involuntary Termination" shall mean (i) without the Optionee's express
     written consent, the significant reduction of the Optionee's duties,
     authority or responsibilities, relative to the Optionee's duties, authority
     or responsibilities as in effect immediately prior to such reduction, or
     the assignment to Optionee of such reduced duties, authority or
     responsibilities; (ii) without the Optionee's express written consent, a
     substantial reduction, without good business reasons, of the facilities and
     perquisites available to the Optionee immediately prior to such reduction;
     (iii) a reduction by the Company in the base salary or target bonus of the
     Optionee as in effect immediately prior to such reduction; (iv) a material
     reduction by the Company in the kind or level of employee benefits,
     including bonuses, to which the Optionee was entitled immediately prior to
     such reduction with the result that the Optionee's overall benefits package
     is significantly reduced; (v) the relocation of the Optionee's location of
     employment to a facility or a location more than fifty (50) miles from the
     Optionee's then present location of employment, without the Optionee's
     express written consent; (vi) any purported termination of the Optionee by
     the Company that is not effected for Disability or for Cause, or any
     purported termination for which the grounds relied upon are not valid; or
     (vii) any act or set of facts or circumstances that would, under California
     case law or statute constitute a constructive termination of the Optionee.

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

OPTIONEE                                           E.PIPHANY, INC.

---------------------------                        ---------------------------
Signature                                          By

---------------------------                        ---------------------------
Print Name                                         Title

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

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