UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

SCHEDULE 13G

Under the Securities Exchange Act of 1934^*

(Amendment No. 7)

 

Quidel Corporation

(Name of Issuer)

Common Stock, $0.001 par value

(Title of Class of Securities)

74838J101

(CUSIP Number)

December 31, 2009

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

o Rule 13d-1(b)

x Rule 13d-1(c)

o Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed”" for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

 

 

 

 

 

 

 

 

 

 

 

 

This Amendment No. 7 to Schedule 13G (this “Amendment No. 7”) is being filed with respect to the Common Stock, par value $.001 (“Common Stock”) of Quidel Corporation, a Delaware corporation (the “Company”), to amend the Schedule 13G filed on April 23, 2001, as previously amended by Amendment No. 1, filed on February 14, 2002, by Amendment No. 2, filed on February 12, 2003, by Amendment No. 3, filed on February 9, 2005, by Amendment No. 4, filed on February 7, 2006, by Amendment No. 5, filed on February 15, 2008 and by Amendment No. 6 filed on May 20, 2009 (as so amended, the “Schedule 13G”), in accordance with the annual amendment requirements. Capitalized terms used but not defined herein have the meaning ascribed thereto in the Schedule 13G.

I. Current Ownership.

 

The beneficial ownership of Common Stock by the Reporting Persons, as of the date of this Amendment No. 7, is as follows:

 

(a) Amount beneficially owned: 1,848,096

(b) Percent of class: 6.1%. The percentages used herein and in the rest of this Amendment No. 7 are calculated based upon a total of 30,146,350 shares of Common Stock issued and outstanding as of October 16, 2009, as reported in the Company’s Quarterly Report on Form 10-Q for the period ended September 30, 2009.

(c) Number of shares as to which such person has:

(iii)    Sole power to dispose or direct the disposition: -0-

 

(a) Amount beneficially owned: 2,262,096

(b) Percent of class: 7.5%.

(c) Number of shares as to which such person has:

(iii)    Sole power to dispose or direct the disposition: -0-

(iv)    Shared power to dispose or direct the disposition: 2,262,096

 

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(a) Amount beneficially owned: 2,992,369

(b) Percent of class: 9.9%.

(c) Number of shares as to which such person has:

(iii)    Sole power to dispose or direct the disposition:40,000

(iv)    Shared power to dispose or direct the disposition: 2,952,369

 

II. December 31, 2009 Ownership.

 

The beneficial ownership of Common Stock by the Reporting Persons, as of the December 31, 2009, is as follows:

 

(a) Amount beneficially owned: 1,848,096

(b) Percent of class: 6.1%

(c) Number of shares as to which such person has:

(iii)    Sole power to dispose or direct the disposition: -0-

(iv)    Shared power to dispose or direct the disposition: 1,848,096

 

(a) Amount beneficially owned: 2,262,096

(b) Percent of class: 7.5%.

(c) Number of shares as to which such person has:

(iii)    Sole power to dispose or direct the disposition: -0-

 

(a) Amount beneficially owned: 2,992,669

(b) Percent of class: 9.9%

(c) Number of shares as to which such person has:

(iii)    Sole power to dispose or direct the disposition:40,000

 

 

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Item 10: Certification:

Each of the Reporting Persons hereby makes the following certification:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

[THE REMAINDER OF THIS PAGE LEFT INTENTIONALLY BLANK]

 

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

DATED: February 1, 2010

 

 

/s/ Larry N. Feinberg

Larry N. Feinberg

 

ORACLE ASSOCIATES, LLC

 

 

 

ORACLE PARTNERS, L.P.

 

 

 

 

 

 

 

 

[SIGNATURE PAGE TO

AMENDMENT NO. 7 TO

SCHEDULE 13G WITH RESPECT TO QUIDEL CORPORATION]