SEC FORM 4

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

Bujarski Robert Joseph

(Last)

(First)

(Middle)

10165 MCKELLAR COURT

(Street)

SAN DIEGO

92121

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
QUIDEL CORP /DE/ [ QDEL ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	SVP, General Counsel & Secy

3. Date of Earliest Transaction (Month/Day/Year)
09/27/2010

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	01/03/2011		M		1,157⁽¹⁾	A	⁽¹⁾	78,044	D
Common Stock	01/03/2011		F		588⁽²⁾	D	$14.74	77,456	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Unit	⁽³⁾	09/27/2010		A⁽³⁾		1⁽³⁾		⁽³⁾	⁽³⁾	Common Stock	⁽³⁾	$0.00	1⁽³⁾	D
Restricted Stock Unit	⁽³⁾	01/03/2011		M⁽³⁾			1⁽³⁾	⁽³⁾	⁽³⁾	Common Stock	⁽³⁾	$0.00	0⁽³⁾	D

Explanation of Responses:

1. As described in footnote (3) below, the common shares were received pursuant to a specified formula upon vesting of a restricted stock unit (the "RSU") granted under the Company's Q4 2010 Employee Deferred Compensation Program (the "Program") and 2010 Equity Incentive Plan.

2. The disposition of shares, as set forth above, was in connection with the Company's withholding of common shares to satisfy tax withholding obligations related to the issuance of common shares upon vesting of the RSU.

3. The RSU was granted pursuant to the Program. Under the Program, the Reporting Person received the RSU, which vested on January 3, 2011, upon an election to defer a percentage of his base salary applicable to the period from September 27, 2010 through December 31, 2010 (the "Covered Period"). Upon vesting of the RSU, the Reporting Person was entitled to receive common shares equal to (i) the amount of his salary deferred under the Program divided by the average of the market closing prices for the common shares over the Covered Period, and (ii) then multiplying the result of the foregoing by 1.2. Pursuant to this formula, the Reporting Person received 1,157 common shares upon vesting of the RSU.

Remarks:

	Robert J. Bujarski	01/05/2011
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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