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*
PETERSEN GARY R

(Last) (First) (Middle)
1100 LOUISIANA, SUITE 3150

(Street)
HOUSTON TX 77002

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
PLAINS ALL AMERICAN PIPELINE LP [ PAA ]
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)
06/15/2010
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)
Code V Amount (A) or (D) Price
Common Units 06/15/2010 S 263,817 D $58.35 0 I Through Partnership (1) (4)
Common Units 06/15/2010 S 61,883 D $58.35 0 I Through Partnership (2) (4)
Common Units 06/15/2010 S 2,500 D $58.35 0 I Through Partnership (3) (4)
Common Units 5,200 D
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)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Explanation of Responses:
1. These securities are owned by E-Holdings III, L.P.
2. These securities are owned by E-Holdings V, L.P.
3. These securities are owned by EnCap Energy Capital Fund III, L.P.
4. Mr. Petersen is a principal of EnCap Investments, L.P., an affiliate of E-Holdings III, L.P. E-Holdings V, L.P. and EnCap Energy Capital Fund III, L.P., which own the common units reported herein. The reporting person disclaims any beneficial ownership of the common units exceeding his pecuniary interest.
Remarks:
On the Form 4 filed by the reporting person on December 12, 2009, the common units owned by EnCap Energy Capital Fund III, L.P. were included in the amount of securities beneficially owned by E-Holdings III, L.P. and E-Holdings V, L.P.
/s/ Gary R. Petersen 06/17/2010
** 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).
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