KERYX BIOPHARMACEUTICALS, INC.
2007 CHIEF ACCOUNTING OFFICER INDUCEMENT STOCK OPTION PLAN
SPECIAL NONSTATUTORY STOCK OPTION AGREEMENT
Optionee: Mark Stier
Number Shares Subject to Options: 100,000
Exercise Price per Share: $11.11
Date of Grant: March 23, 2007
Grant of Options . Keryx Biopharmaceuticals, Inc. (the “Company”) hereby grants to the
Optionee named above (the “Optionee”) a Non-statutory Stock Option to purchase, on the terms and conditions
set forth in this agreement (this “Option Agreement”), the number of shares indicated above of the Company’s
$0.001 par value common stock (the “Stock”), at the exercise price per share set forth above (the “Options”).
Vesting of Options . (a) Unless the exercisability of the Options is accelerated in accordance
with this Option Agreement, the Options shall vest (become exercisable) as follows:
N otwithstanding the above, the Options will vest and become immediately exercisable if Optionee is terminated
by the Company following a Change in Control.
Term of Options and Limitations on Right to Exercise . The term of the Options will be for a
period of ten years, expiring at 5:00 p.m., Eastern Time, on the tenth anniversary of the date of grant (the
“Expiration Date”). To the extent not previously exercised, the Options will lapse in accordance with the
following provisions, as applicable (but in no event later than the Expiration Date):
Three (3) months after the termination of Optionee’s service for any reason other than by
reason of Optionee’s (i) death, (ii) Disability, or (iii) termination by the Company following a Change in Control
(as such terms are defined herein ) .
Months of Employment
Number of Options Vesting
Twenty-four (24) months