GENERAL NONSTATUTORY STOCK OPTION PLAN
STOCK OPTION AGREEMENT
THIS STOCK OPTION AGREEMENT (this "AGREEMENT") is made effective as of June 23, 1997 (the
"GRANT DATE"), by and between QUIDEL CORPORATION, a Delaware corporation (the "COMPANY"),
and ANDRE de BRUIN ("OPTIONEE"), with reference to the following facts:
A. The Board of Directors of the Company (the "BOARD") has established, by written resolutions, the General
Nonstatutory Stock Option Plan (the "PLAN"), and has granted authority to the Compensation Committee of the
Board (the "COMMITTEE") to make grants under and to administer the Plan.
B. By action taken on the Grant Date, the Committee granted to Optionee a nonstatutory stock option (the
"OPTION") to purchase shares of the common stock of the Company (the "COMMON STOCK") on the terms
and conditions set forth herein. This Agreement is intended to memorialize the terms and conditions upon which
the Committee granted the Option to Optionee.
NOW, THEREFORE, in consideration of the foregoing and of the mutual covenants set forth herein, and for
other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties
agree as follows:
1. GRANT OF OPTION. Optionee may, at Optionee's election and upon the terms and conditions set forth
herein, purchase all or any part of an aggregate of 300,000 shares of Common Stock (the "OPTIONED
SHARES") at the price per share equal to $3.71875 (the "OPTION PRICE"). The Option Price equals the
closing price of the Common Stock on the trading day immediately preceding the Grant Date.
2. VESTING SCHEDULE.
(A) 100,000 SHARES. The Option shall vest and become exercisable cumulatively as to 100,000 of the
Optioned Shares at the rate of 6.25% (i.e., 6,250 shares) for each full calendar quarter following the Grant Date.
The first such vesting date shall be September 23, 1997.
(B) 200,000 SHARES. Unless accelerated as provided below in this subsection (b), the Op