-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, VsK/zdOVC2BKwwHMSzsAgtqkqAP/YuY/2KWrxsupL0VJvjgUso+OUuhNvypRMtKn em4glhADN938aXW7IJhIiw== 0001325447-06-000039.txt : 20060830 0001325447-06-000039.hdr.sgml : 20060830 20060830094919 ACCESSION NUMBER: 0001325447-06-000039 CONFORMED SUBMISSION TYPE: SC 13D/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20060830 DATE AS OF CHANGE: 20060830 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: CANADA SOUTHERN PETROLEUM LTD CENTRAL INDEX KEY: 0000016804 STANDARD INDUSTRIAL CLASSIFICATION: CRUDE PETROLEUM & NATURAL GAS [1311] IRS NUMBER: 980085412 STATE OF INCORPORATION: A5 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13D/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-80168 FILM NUMBER: 061064130 BUSINESS ADDRESS: STREET 1: SUITE 250 STREET 2: 706 - 7 AVE SW CITY: CALGARY STATE: A0 ZIP: T2P 0Z1 BUSINESS PHONE: 403-668-5623 MAIL ADDRESS: STREET 1: SUITE 250 STREET 2: 706 - 7 AVE SW CITY: CALGARY STATE: A0 ZIP: T2P 0Z1 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: Arnhold & S. Bleichroeder Advisers, LLC CENTRAL INDEX KEY: 0001325447 IRS NUMBER: 571156902 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13D/A BUSINESS ADDRESS: STREET 1: 1345 AVENUE OF THE AMERICAS CITY: NEW YORK STATE: NY ZIP: 10105 BUSINESS PHONE: 212-698-3241 MAIL ADDRESS: STREET 1: 1345 AVENUE OF THE AMERICAS CITY: NEW YORK STATE: NY ZIP: 10105 SC 13D/A 1 csp13da3.txt UNITED STATE SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 - ------------- SCHEDULE 13D* (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(a) Under the Securities Exchange Act of 1934 (Amendment No. 3)* CANADA SOUTHERN PETROLEUM LTD. (Name of Issuer) Common Shares, No Par Value (Title of Class of Securities) 135231108 (CUSIP Number) Mark Goldstein Arnhold and S. Bleichroeder Advisers, LLC 1345 Avenue of the Americas New York, New York 10105 (212) 698-3101 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) August 25, 2006 (Date of Event which Requires Filing of This Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box. [ ] NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent. (Continued on following pages) * The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page. The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). CUSIP NO. 135231108 SCHEDULE 13D PAGE 2 OF 4 PAGES 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Arnhold and S. Bleichroeder Advisers, LLC 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS* AF, OO 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ] 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware 7 SOLE VOTING POWER 0 - --------------------------------------------------------- NUMBER OF 8 SHARED VOTING POWER SHARES BENEFICIALLY -0- OWNED BY --------------------------------------------------------- EACH 9 SOLE DISPOSITIVE POWER REPORTING PERSON WITH 0 - --------------------------------------------------------- 10 SHARED DISPOSITIVE POWER - -0- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH PERSON 0 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0 14 TYPE OF REPORTING PERSON* IA * SEE INSTRUCTIONS BEFORE FILLING OUT CUSIP NO. 135231108 SCHEDULE 13D PAGE 3 OF 4 PAGES Explanatory Note This Amendment No. 3 to Schedule 13D is being filed to amend the Schedule 13D, as amended, which was originally filed on July 24, 2006. Item 1. Security and Issuer. This statement on Schedule 13D relates to the common shares, no par value (the "Shares"), of Canada Southern Petroleum Ltd. (the "Issuer"). The principal executive office of the Issuer is located at Suite 250, 706 - 7th Avenue SW, Calgary, Alberta, Canada T2P 0Z1. Item 5. Interest in Securities of the Company. (a) As of the close of business on August 25, 2006, the Reporting Person is deemed to be the beneficial owner of 0 Shares, constituting approximately 0% of the Shares outstanding. The aggregate percentage of Shares reported herein is based upon 14,496,165 Shares outstanding, which is the total number of Shares outstanding as of July 13, 2006 as reported in the Issuer's Amendment No. 5 to Scheduler 14D-9 filed on July 14, 2006. (b) By virtue of investment management agreements with its clients, the Reporting Person has sole voting and dispositive powers over the 0 Shares reported herein, which powers are exercised by the Principal and the Portfolio Managers. (c) Information concerning transactions in the Shares effected by the Reporting Person during the past sixty days is set forth in Schedule A hereto and is incorporated herein by reference. All of the transactions in Shares listed on Schedule A hereto were effected in the open market. (d) Clients of the Reporting Person have the right to receive and the ultimate power to direct the receipt of dividends from, or the proceeds of the sale of, the Shares reported herein. (e) Not applicable. SIGNATURES After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Dated: August 30, 2006 ARNHOLD AND S. BLEICHROEDER ADVISERS, LLC By: /s/ Mark Goldstein - ---------------------- Name: Mark Goldstein Title: Senior Vice President CUSIP NO. 135231108 SCHEDULE 13D PAGE 4 OF 4 PAGES SCHEDULE A TRANSACTIONS IN THE SHARES BY THE REPORTING PERSON DURING THE PAST 60 DAYS Date of Transaction Shares Purchased (Sold) Price Per Share (Avg.) 6/27/06 29,350 10.70 6/28/06 14,009 10.65 6/29/06 56,641 11.70 6/30/06 50,000 11.98 7/03/06 2,000 11.63 7/05/06 35,000 11.60 7/05/06 (24,349) 11.75 7/06/06 40,000 11.72 7/06/06 (19,400) 11.65 7/07/06 27,583 11.75 7/10/06 20,000 11.71 7/11/06 42,340 11.68 7/12/06 62,165 13.37 7/28/06 (485,339) 13.06 8/25/06 (1,000,000) 13.10 -----END PRIVACY-ENHANCED MESSAGE-----