The top after-market NYSE gainers on Monday are: Heckmann, Transcananda, Aspen Insurance Holdings, Clean Harbors and KBR, Inc. The top after-market NYSE losers are: Callon Petroleum, American Oriental Bioengineering, Universal Travel, Dole Food and Wuxi Pharmatech.

Gainers

Heckmann Corp. (NYSE:HEK) shares surged 5.92 percent to $5.90 in aftermarket trading session. The company reported fourth quarter net income of $0.24 million on $14.3 million revenue compared to $77 thousand on $8.7 million revenue in the same quarter last year. The company also raised its fiscal 2011 revenue guidance in excess of $150 million from previous guidance of $100 million stated last quarter.

Transcananda Corp. (NYSE:TRP) shares gained 2.19 percent to $40.58 in post market trading session. The stock has a 52 week low of $25.80 and 52 week high of $40.42 and has $27.76 billion market capitalization.

Aspen Insurance Holdings Ltd. (NYSE:AHL) shares advanced 2.14 percent to $54.99 in post market trading session. The Company has appointed Kerry Calaiaro as Senior Vice President, Investor Relations with immediate effect

Clean Harbors, Inc. (NYSE:CLH) shares advanced 2.11 percent to $96.40 in aftermarket trading session.

KBR, Inc. (NYSE:KBR) shares gained 1.88 percent to $34.68 in aftermarket trading session. The company announced that it has been awarded a contract by Inner Mongolia Connell Chemical Industry Co., Ltd. (Connell) to provide licensing, basic engineering and related training and field services for its grassroots aniline plant in TongLiao, Inner Mongolia Province, China.

Losers

Callon Petroleum Co. (NYSE:CPE) shares slumped 10.49 percent to $6.40 in post market trading session. The company reported fourth quarter net income of $0.7 million or $0.02 per share compared to $53.9 million or $2.27 per share in the same period a year-ago.

American Oriental Bioengineering, Inc. (NYSE:AOB) shares plunged 10.22 percent to $2.02 in aftermarket trading session after the company said its fourth quarter profit slumped due to lower revenues. Its fourth quarter net income declined to $2.8 million or $0.04 per share from $11.7 million or $0.14 per share in the same period last year.

Universal Travel Group (NYSE:UTA) shares declined 6.56 percent to $4.84 in post market trading session. Its shares declined 5.99 percent in regular trading session.

Dole Food Co., Inc. (NYSE:DOLE) shares declined 5.8 percent to $13.49 in post market trading session as the company swung to a fourth quarter loss, mainly hurt by higher costs, and lower prices for banana in Asia. The company reported fourth quarter net loss of $36 million compared to net income of $15 million in the same quarter last year.

Wuxi Pharmatech (Cayman) Inc. (NYSE:WX) shares declined 4.66 percent to $15.56 in aftermarket trading session.