Arena Pharmaceuticals, Inc. 2009 Long-Term Incentive Plan
Incentive Stock Option Grant Agreement for Employees
THIS GRANT AGREEMENT (this “Agreement”), effective as of (the “Grant Date”), is
entered into by and between Arena Pharmaceuticals, Inc., a Delaware corporation (the “Company”), and
1. Grant of Options . The Company hereby grants to the Participant a stock option (the “Option”) to
purchase shares of common stock of the Company, par value $0.0001 per share (the “Shares”), at the
exercise price of $ per Share (the “Exercise Price”). The Option is intended to qualify as an incentive
stock option under Section 422 of the Code.
2. Subject to the Plan . This Agreement is subject to the provisions of the Arena Pharmaceuticals, Inc. 2009
Long-Term Incentive Plan (the “Plan”), and, unless the context requires otherwise, terms used herein shall have
the same meaning as in the Plan. In the event of a conflict between the provisions of the Plan and this
Agreement, the Plan shall control.
3. Term of Options . Unless the Option terminates earlier pursuant to the provisions of this Agreement, the
Option shall expire on the tenth anniversary of the Grant Date; provided, however, if the Participant owns stock
representing more than 10% of the voting power of all classes of stock of the Company or any Affiliate at the
time of this grant, the Option shall expire on the fifth anniversary of the Grant Date.
4. Vesting . Except as otherwise provided in Sections 6(b), (c) or (d) of this Agreement, provided the
Participant is then an Employee, a Consultant or a Director, the Option shall become vested and exercisable on
the following dates:
Vest Date Vested Options
5. Exercise of Option
(a) Manner of Exercise . To the extent vested, the Option may be exercised, in whole or in part, by delivering
written notice to the Company in accordance with paragraph