SEC FORM 3/A

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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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1. Name and Address of Reporting Person^*

BORKAR RATAN S

(Last)

(First)

(Middle)

12544 HIGH BLUFF DRIVE

SUITE 200

(Street)

SAN DIEGO

92130

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
10/16/2017

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

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

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	SVP, Intl Comm Operations

5. If Amendment, Date of Original Filed (Month/Day/Year)
10/18/2017

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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Non-Qualified Stock Options (Right to Buy)	01/18/2014	01/18/2020	Common Stock	3,169	$15.28	D
Non-Qualified Stock Options (Right to Buy)	03/02/2015	03/02/2021	Common Stock	9,000	$12.63	D
Non-Qualified Stock Options (Right to Buy)	03/02/2016	03/02/2022	Common Stock	25,223	$15.19	D
Non-Qualified Stock Options (Right to Buy)	02/25/2017	02/25/2023	Common Stock	17,269	$22.21	D
Non-Qualified Stock Options (Right to Buy)	⁽¹⁾	02/24/2024	Common Stock	21,068	$27.57	D
Non-Qualified Stock Options (Right to Buy)	⁽²⁾	02/05/2025	Common Stock	21,506	$23.41	D
Non-Qualified Stock Options (Right to Buy)	⁽³⁾	02/10/2026	Common Stock	21,506	$15.4	D
Non-Qualified Stock Options (Right to Buy)	⁽⁴⁾	02/15/2027	Common Stock	7,593	$21.08	D
Restricted Stock Units	02/24/2018	⁽⁵⁾	Common Stock	240	$0.00⁽⁶⁾	D
Restricted Stock Units (Converted)	02/28/2014	⁽⁷⁾	Common Stock	1,963	$0.00⁽⁶⁾	D
Restricted Stock Units (Premium)	02/28/2015	⁽⁸⁾	Common Stock	589	$0.00⁽⁶⁾	D
Restricted Stock Units	⁽⁹⁾	⁽⁹⁾	Common Stock	1,468	$0.00⁽⁶⁾	D
Restricted Stock Units (Converted)	02/11/2015	⁽⁷⁾	Common Stock	1,995	$0.00⁽⁶⁾	D
Restricted Stock Units (Premium)	02/11/2016	⁽¹⁰⁾	Common Stock	598	$0.00⁽⁶⁾	D
Restricted Stock Units	⁽¹¹⁾	⁽¹¹⁾	Common Stock	2,938	$0.00⁽⁶⁾	D
Restricted Stock Units (Converted)	02/16/2016	⁽⁷⁾	Common Stock	3,168	$0.00⁽⁶⁾	D
Restricted Stock Units (Premium)	02/16/2017	⁽¹⁰⁾	Common Stock	950	$0.00⁽⁶⁾	D
Restricted Stock Units	09/19/2020	⁽¹²⁾	Common Stock	2,500	$0.00⁽⁶⁾	D
Restricted Stock Units	02/15/2021	⁽¹³⁾	Common Stock	3,797	$0.00⁽⁶⁾	D
Restricted Stock Units (Converted)	02/17/2017	⁽⁷⁾	Common Stock	4,674	$0.00⁽⁶⁾	D
Restricted Stock Units (Premium)	02/17/2018	⁽¹⁴⁾	Common Stock	1,471	$0.00⁽⁶⁾	D

Explanation of Responses:

1. 10,534 shares vested on 02/24/2016; 10,534 shares will vest on 02/24/2018.

2. 10,754 shares vested on 02/05/2017; 5,376 shares will vest on 02/05/2018; and 5,376 shares will vest on 02/05/2019.

3. 10,754 shares will vest on 02/10/2018; 5,376 shares will vest on 02/10/2019; and 5,376 shares will vest on 02/10/2020.

4. 3,797 shares will vest on 02/15/2019; 1,898 shares will vest on 02/15/2020; and 1,898 shares will vest on 02/15/2021.

5. Each restricted stock unit will vest on the fourth anniversary date of the grant date, 02/24/2018.

6. Each restricted stock unit represents the right to receive one share of Quidel Corporation common stock.

7. The restricted stock units were received in lieu of a percentage of the reporting person's annual cash bonus pursuant to the company's deferred bonus compensation plan.

8. The restricted stock units vested on the first anniversary date of the grant date, 02/28/2015.

9. 734 shares will vest on 02/15/2018; 734 shares will vest on 02/05/2019.

10. The restricted stock units vested on the first anniversary date of the grant date, 02/16/2016.

11. 1,469 restricted stock units will vest on 02/10/2018; 734 restricted stock units will vest on 02/10/2019; and 735 restricted stock units will vest on 02/10/2020.

12. The restricted stock units will vest on the fourth anniversary date of the grant date, 09/19/2020.

13. The restricted stock units will vest on the fourth anniversary date of the grant date, 02/17/2021.

14. The restricted stock units will vest on the first anniversary date of the grant date, 02/17/2018.

Remarks:

This Form 3/A is being filed to include items on Table II that were inadvertently omitted from the reporting person's original Form 3.

	Robert J. Bujarski, attorney-in-fact for Ratan S. Borkar	11/13/2017
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
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