Ownership Submission
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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Killgore Michael D
 2. Date of Event Requiring Statement (Month/Day/Year)
12/18/2009		 3. Issuer Name and Ticker or Trading Symbol
Primoris Services Corp [PRIM]
(Last)
(First)
(Middle)
C/O PRIMORIS SERVICE CORPORATION, 2100 MCKINNEY AVENUE, SUITE 1500		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Exec VP, Dir Const Svcs
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

DALLAS, TX 75201		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
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 707,034 (1)
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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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 of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Killgore Michael D
C/O PRIMORIS SERVICE CORPORATION
2100 MCKINNEY AVENUE, SUITE 1500
DALLAS, TX 75201		   X     Exec VP, Dir Const Svcs  

Signatures

/s/ Peter J. Moerbeek, by power of attorney 03/17/2011
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) Represents shares of common stock issued to Mr. Killgore on April 12, 2010, in connection with the issuer's acquisition of James Construction Group, LLC. At the closing of the acquisition on December 18, 2009, Mr. Killgore was issued a total of 7,070.34 shares of the issuer's Series A Contingent Convertible Preferred Stock. At a special meeting of the stockholders of the issuer on April 12, 2010, the issuer's stockholders approved the conversion of Mr. Killgore's preferred shares into a total of 707,034 shares of common stock.

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