13F-HR 1 file13f33112.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 13F FORM 13F COVER PAGE Report for the Calendar Year or Quarter Ended: March 31, 2012 Check here if Amendment [ ]; Amendment Number: This Amendment (check only one.): [ ] is a restatement. [ ] adds new holdings entries. Institutional Investment Manager Filing this Report: Name: Peter K. Seldin Address: 575 Lexington Avenue, 33rd Floor New York, NY 10022 Form 13F File Number: 28-3604 The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists and tables, are considered integral parts of this form. Person signing this report on Behalf of Reporting Manager: Name: Peter K. Seldin Title: Investment Manager Phone: 212-753-5150 Signature, Place, and Date of Signing: /s/Peter K. Seldin New York, NY May 10, 2012 Report type (Check only one): [X] 13F Holdings Report. [ ] 13F Notice. [ ] 13F Combination Report. FORM 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 3 Form 13F Information Table Entry Total: 9 Form 13F Information Table Value Total: $57,431 (thousands) List of Other Included Managers: Provide a numbered list of the name(s) and Form 13F file number(s) of all Institutional investment managers with respect to which this report is filed, other than the manager filing this report. No. Form 13F File Number Name 1. 028-12601 Centennial Energy Partners, L.L.C. 2. 028-13733 Centennial Energy Partners V, L.P. 3. 028-14651 Centennial Energy Management, Inc. FORM 13F INFORMATION TABLE

COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 TITLE OF VALUE SHARES INVESTMENT OTHER VOTING AUTHORITY NAME OF ISSUER CLASS CUSIP (X $1000) PRN/AMT DISCRETION MANAGERS SOLE SHARED BPZ RESOURCES INC COM 055639108 ~~5536~~7855 1,949,172 SHARED-DEFINED 1,2,3 1,949,172 0 BPZ RESOURCES INC COM 055639108 ~~13076~~16757 4,~~604~~158,~~056~~156 SHARED-DEFINED 1,3 4,~~604~~158,~~056~~156 0 BPZ RESOURCES INC COM 055639108 ~~1649~~2341 580,805 SHARED-DEFINED 3 580,805 0 CARRIZO OIL & GAS INC COM 144577103 ~~6699~~7185 254,233 SHARED-DEFINED 1,2,3 254,233 0 CARRIZO OIL & GAS INC COM 144577103 ~~13311~~13824 ~~505~~489,177 SHARED-DEFINED 1,3 ~~505~~489,177 0 CARRIZO OIL & GAS INC COM 144577103 ~~2134~~2289 80,984 SHARED-DEFINED 3 80,984 0 RANGE RES CORP COM 75281A109 ~~2654~~2491 42,842 SHARED-DEFINED 1,2,3 42,842 0 RANGE RES CORP COM 75281A109 ~~4377~~4108 70,658 SHARED-DEFINED 1,3 70,658 0 RANGE RES CORP COM 75281A109 ~~619~~581 10,000 SHARED-DEFINED 3 10,000 0 VENOCO INC COM 92275P307 3592 530,642 SHARED-DEFINED 1,2,3 530,642 0 VENOCO INC COM 92275P307 8895 1,313,873 SHARED-DEFINED 1,3 1,313,873 0 VENOCO INC COM 92275P307 1121 165,606 SHARED-DEFINED 3 165,606 0

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