The top after-market Nasdaq gainers Wednesday were Verint Systems Inc, ExOne Co, Landec Corporation, ZAGG Inc, and Windstream Corporation, while the top after-market Nasdaq losers were Five Below Inc, Aegion Corporation and Alexza Pharmaceuticals.

Gainers

Verint Systems Inc. (NASDAQ:VRNT) shares surged 6.09 percent to $36.95 in post-market trading. The company reported fourth quarter non-GAAP EPS of $0.91 after the bell Wednesday, up from $0.75 a year ago. The consensus estimate was for EPS of $0.75. 

ExOne Co. (NASDAQ:XONE) shares climbed 5.72 percent to $32.35 in post-market trading. The company shares had lost over 3 percent in Wednesday regular trading.

Landec Corporation (NASDAQ:LNDC) shares advanced 4.84 percent to $14.29 in post-market trading. The company stock has a 52-week trading average of $6.13 - $13.65 and a market capitalization of $351.44 million. The company’s shares had gained over 2 percent in regular trading.

ZAGG Inc (NASDAQ:ZAGG) shares gained 4.38 percent to $7.62 in post-market trading. The company stock has a 52-week trading average of $6.48-$13.29 and a market capitalization of $223.56 million. The company shares had lost over 2 percent in regular trading.

Windstream Corporation (NASDAQ:WIN) shares advanced 1.38 percent to $8.10 in post-market trading. The company stock has a 52-week trading average of $7.86-$12.12 and a market capitalization of $4.72 million.

Losers

Five Below Inc. (NASDAQ:FIVE) shares declined 6.84 percent to $36.48 in post-market trading. The company reported adjusted net income for the fourth quarter was $21.4 million or $0.39 per share, compared to $16.1 million or $0.31 per share in the prior year quarter and topped analysts’ expectation of $0.38 per share. However, the company forecast net sales of $92 million to $94 million, earnings of $0.00 to $0.01 per share and adjusted earnings of $0.02 to $0.03 per share below the analysts’ expectation of $0.05 per share on revenue of $94.21 million for the first quarter. Array Biopharma Inc. (NASDAQ:ARRY) shares dropped 5.22 percent to $4.72 in post-market trading. The company announced after the close Wednesday that it entered into a sales agreement for an at-the-market offering of shares of common stock with Cantor Fitzgerald & Co., as sales agent thereunder.

Aegion Corporation (NASDAQ: AEGN) shares fell 3.81 percent to $23.76 in post-market trading. The company said it expects diluted earnings per share for the first quarter of 2013 to be in the range of $0.04 to $0.08 versus a Capital IQ Consensus Estimate $0.22 per share.

Alexza Pharmaceuticals Inc. (NASDAQ:ALXA) shares slumped 2.71 percent to $4.30 in post-market trading. The company stock has a 52-week trading average of $2.55-$7.60 and a market capitalization of $69.34 million.