Insider Transactions: ATCO, Brookfield Properties, Crosshair Exploration & Mining

ATCO Ltd. (ATCO) chairman, Ronald Southern, bought 6,705 company shares through Sentgraf Enterprises Ltd. between Aug. 13 and Aug. 15, 2007, bringing these holdings to above 12.1 million shares.

Former Aurelian Resources Inc. CFO, David Lewis, sold 57,000 company shares between Aug. 8 and Aug. 10, 2007, bringing his holdings to 48,000 shares. He will leave the company on Aug. 31.

Brookfield Properties Corp. (BPO) bought back and canceled 95,000 shares between Aug. 9 and Aug. 16, 2007.

Crosshair Exploration & Mining Corp. (CXZ) CEO, Mark Morabito, bought 66,200 company shares on Aug. 16, 2007, bringing his holdings to 1,046,269 shares.

Duvernay Oil Corp. COO, Stan Nowek, exercised 30,000 options for company shares at $3.50 each on Aug. 13, 2007, then sold these shares for $35.03 the next day. This brought his holdings back to 28,000 shares.

CFO Brian Robinson exercised 25,000 shares at $6.25 each on Aug. 13, then sold them for $35.14 the same day. This brought his holdings back to 2,500 shares.

John Burzynski, vice president of corporate development at Osisko Exploration Ltee, bought 25,000 company shares through 4191137 Canada Inc. on Aug. 15 and Aug. 16, 2007, bringing these holdings to 170,000 shares. He bought 59,000 more shares under director ownership on the same day to bring his holdings to 762,100 shares.