1
Exhibit 99.21
EMPLOYEE STOCK PURCHASE PLAN ("ESPP")
ENROLLMENT/CHANGE FORM
Action Complete Sections:
SECTION 1:
/ / New Enrollment 2, 3, 7 and sign attached
ACTION Stock Purchase Agreement
/ / Change Payroll Deductions 2, 4, 7
/ / Terminate Payroll Deductions 2, 5, 7
/ / Leave of Absence 2, 6, 7
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SECTION 2:
Name______________________________________________________________________________________________
PERSONNEL Last First MI Dept.
DATA
Home Address______________________________________________________________________________________
Street
______________________________________________________________________________________
City State Zip Code
Social Security #:/ / / /-/ / /-/ / / / /
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SECTION 3:
Effective with the Purchase
NEW Interval Beginning: Payroll Deduction Amount: _____% of cash earnings*
ENROLLMENT / / March 1, 199_
/ / September 1, 199_ * Must be a multiple of 1% up to a maximum of 15% of
cash earnings
/ / Initial Offering Period
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SECTION 4:
Effective with the I authorize the following new level of payroll
CHANGE Pay Period Beginning: ______________________________ deductions: _______% of cash earnings*
PAYROLL Month, Day and Year
DEDUCTIONS * Must be a multiple of 1% up to a maximum of 15% of
cash earnings
NOTE: You may reduce your rate of payroll
deductions once per purchase interval to
become effective as soon as possible
following the filing of the change form. You
may also increase your rate of payroll
deductions to become effective as of the
start date of the next purchase interval.
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SECTION 5:
Effective with the Your election to terminate your payroll deductions for the
TERMINATE Pay Period Beginning: _____________________________ balance of the offering period cannot be changed, and
PAYROLL Month, Day and Year you may not rejoin the offering period at a later date.
DEDUCTIONS You will not be able to resume participation in the ESPP
until a new offering period begins.
In connection with my voluntary termination of payroll
deductions, I elect the following action with respect to
my ESPP payroll deductions to date in the current six
(6)-month purchase interval:
/ / Purchase Calpine shares at end of the interval
OR
/ / Refund ESPP payroll deductions collected
NOTE:If your employment terminates for any reason or your
eligibility status changes (<20 hrs/wk or <5 months/yr),
you will immediately cease to participate in the ESPP, and
your ESPP payroll deductions collected in that purchase
interval will automatically be refunded to you.
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SECTION 6
In connection with my unpaid leave of absence, I elect the
following action with respect to my ESPP payroll deductions
to date
LEAVE OF in the current purchase interval:
ABSENCE
/ / Purchase Calpine shares at end of the interval
OR
/ / Refund ESPP payroll deductions collected
NOTE:If you take an unpaid leave of absence, your payroll
deductions will immediately cease. Upon your return to
active service, your payroll deductions will automatically
resume at the rate in effect for you at the time you went
on leave.
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SECTION 7
AUTHORIZATION
I hereby authorize the specific action or actions indicated above.
______________________________ _________________________________________________________________
Date Signature of Employee
