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^*

MORTON DEAN O

(Last)

(First)

(Middle)

C/O CEPHEID

904 CARIBBEAN DRIVE

(Street)

SUNNYVALE

94089

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
CEPHEID [ CPHD ]

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

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
05/12/2011

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	05/12/2011		M		12,500	A	$9.18	26,050	D
Common Stock	05/12/2011		S		12,500⁽¹⁾	D	$31.6478⁽²⁾	13,550	D
Common Stock								5,000	I	By Dean O. Morton 2008 Annuity Trust⁽³⁾
Common Stock								5,000	I	By Lavon Morton 2008 Annuity Trust⁽⁴⁾
Common Stock								75,500	I	By Trust⁽⁵⁾
Common Stock								82,500	I	By MDLC Partners⁽⁶⁾

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)
Non-Qualified Stock Option (right to buy)	$9.18	05/12/2011		M			12,500	⁽⁷⁾	04/27/2016	Common Stock	12,500	$0.00	0	D

Explanation of Responses:

1. Represents the aggregate of sales effected on the same day at different prices.

2. Represents the weighted average sales price per share. The shares sold at prices ranging from $31.56 to $31.85 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

3. Shares are held by the Dean O. Morton 2008 Annuity Trust U/A DTD 10/07/2008, of which the Reporting Person is a trustee.

4. Shares are held by the Lavon Morton 2008 Annuity Trust U/A DTD 10/07/2008, of which the Reporting Person is a trustee.

5. Shares are held by the Dean and Lavon Morton Trust dated 9/20/79, of which the Reporting Person is a trustee.

6. The reporting Person is a general partner of MDLC Partners, a California limited partnership ("MDLC"). As a general partner, Reporting Person shares voting and investment power of the shares held by MDLC. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

7. The stock option grant is 100% vested and immediately exercisable.

Remarks:

	/s/ Dean O. Morton by Joseph H. Smith, Attorney-in-Fact	05/16/2011
	** 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 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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