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Exhibit 10.13
 Award Number:Date of Award:
 * FORM OF *
CONNETICS CORPORATION STOCK PLAN (2000)  RESTRICTED STOCK PURCHASE AGREEMENT  [E.C.; 2006 Performance and Time-Based Vesting]
 Grantee Award Plan Agreement
 Grantees Name and Address:Total Number of Shares
of Common Stock Awarded
(the Shares)
    
    Up toPurchase Price per Share
    
    $0.001 Par Value per ShareTotal Purchase Price
    
    $
 Issuance of Shares . Section 3 Connetics Company Total Purchase
Price
 Payment of Total Purchase Price . (check one):
 o
 þ




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Forfeiture of Shares .
 Forfeiture Sections
3(b) (c) Unvested Shares Section 3(b) (c), Vested Shares Contingent Shares Section 3(b) Section 3(c)
  (i)
    
    Time-Based Vesting. A total of
___Shares are subject to time-based vesting as
follows: 1/2 of the Shares shall vest on the second anniversary of
the
Award Date, and an additional 1/2 of the Shares shall vest on the third
anniversary of the Award Date.(ii)
    
    Performance Vesting. A total of
___Shares are subject to performance-based vesting, as
measured by the 2006 Revenue goal of
 and 2006 pre-tax
income goal of . If the Committee determines for the year
ending December 31, 2006 that 2006 revenue is below
 or that 2006 pre-tax income is below , then all
the Shares under this Section3(b)(ii) shall be automatically forfeited
to the Company, effective as of the date of the Committee meeting at
which the decision is made regarding goal achievement. If the
Committee determines for the year ending December 31, 2006 that 2006
revenue equals or exceeds  and that 2006 pre-tax
income equals or exceeds , then all of the Shares under
this Section3(b)(ii) shall be Contingent Shares pursuant to this
Agreement. Of the Contingent Shares under this Section3(b)(ii), 1/2
of the Shares shall vest on the second anniversary of the Award Date,
and an additional 1/2 of the Shares shall vest on the third anniversary
of the Award Date.
 Continued Status as a Service Provider Section 3(b)(ii)




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Section 3(b)(ii)
 Effect of Changes on Vesting
   Change in Control
 Notice
 Transfer Restrictions . Section 4
 Certificates . This Agreement is the sole proof of Grantees ownership of the
Shares, and Grantee acknowledges that he/she will not receive a stock certificate representing the
Shares. Section 3 Section 4 Broker




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Section 3 Section
7
 Additional Securities and Distributions .
 Additional Securities"
  Taxes .
 No Section 83(b) Election
 Tax Liability
 Payment of Withholding Taxes e.g., Tax Withholding Obligation




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By Share Withholding.
 By Sale of Shares e.g.,
 By Check, Wire Transfer or Other Means




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e.g.,
 Stop-Transfer Notices .
 Refusal to Transfer .
 Restrictive Legends .
   Entire Agreement: Governing Law .




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No Rights to Employment
 Construction .
 Administration and Interpretation .
 Venue . Section 15
 Notices .




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Connetics Corporation,
a Delaware corporation
PURSUANT TO THE AUTHORITY OF
THE BOARD OF DIRECTORSBy:Thomas G. WiggansChairman of the Board and
Chief Executive Officer




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Section 14
 Dated:
    
    
    
    Signed:(Grantee)