SEC FORM 3

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^*

CORCORAN KEVIN P

(Last)

(First)

(Middle)

PACIFIC BIOSCIENCES OF CALIFORNIA, INC.

1380 WILLOW ROAD

(Street)

MENLO PARK

94025

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
03/27/2012

3. Issuer Name and Ticker or Trading Symbol
PACIFIC BIOSCIENCES OF CALIFORNIA INC [ PACB ]

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

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	SVP, Market Development

5. 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 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)
Common Stock	8,049	D

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)
Stock Option (right to buy)	⁽¹⁾	11/26/2017	Common Stock	112,500	$1.96	D
Stock Option (right to buy)	⁽²⁾	09/17/2018	Common Stock	37,500	$6.96	D
Stock Option (right to buy)	⁽³⁾	02/17/2020	Common Stock	50,000	$8.5	D
Stock Option (right to buy)	⁽⁴⁾	07/29/2020	Common Stock	12,500	$12.74	D
Stock Option (right to buy)	⁽⁵⁾	03/15/2021	Common Stock	150,000	$14.24	D
Stock Option (right to buy)	⁽⁶⁾	02/15/2022	Common Stock	250,000	$4.79	D

Explanation of Responses:

1. The shares subject to the option are fully vested and exercisable.

2. 1/5th of the shares subject to the option vested on June 1, 2009 and the balance of the shares have vested and will vest monthly thereafter over the next four years, provided that the Reporting Person continues to serve through each vesting date.

3. 1/5th of the shares subject to the option vested on June 1, 2010 and the balance of the shares have vested and will vest monthly thereafter over the next four years, provided that the Reporting Person continues to serve through each vesting date.

4. 1/5th of the shares subject to the option vested on June 1, 2011 and the balance of the shares have vested and will vest monthly thereafter over the next four years, provided that the Reporting Person continues to serve through each vesting date.

5. 1/5th of the shares subject to the option vested on March 15, 2012 and the balance of the shares have vested and will vest monthly thereafter over the next four years, provided that the Reporting Person continues to serve through each vesting date.

6. 1/5th of the shares subject to the option will vest on February 15, 2013 and the balance of the shares will vest monthly thereafter over the next four years, provided that the Reporting Person continues to serve through each vesting date.

	Brian Dow, Attorney-in-fact for Kevin P. Corcoran	04/03/2012
	** 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).
** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.