The top after-market NASDAQ gainers Friday were: TranS1 Inc., Cray Inc., InfoSpace, TESSCO Technologies, GRAVITY Co. and Verenium Corp. The top after-market NASDAQ losers were: Leap Wireless International, DISH Network Corp, HomeAway, Yandex N.V., Fortinet and Rambus.

Gainers:

TranS1 Inc. (TSON) stock climbed 26.83 percent to $4.16 in post market trading session. Shareholders of TSON are reminded of the securities class action lawsuit filed against the Company and certain of its officers. The class action (12-cv-00023), filed in the United States District Court, Eastern District of North Carolina, is on behalf of a class consisting of all persons or entities who purchased TranS1 securities during the period between Feb 21, 2008 and Oct 17, 2011, inclusive (the Class Period).

Cray Inc. (CRAY) stock climbed 8.89 percent to $8.33 in aftermarket trading session. The company stock declined nearly 4 percent in regular trading session.

InfoSpace Inc. (INSP) stock surged 5.14 percent to $12.28 in post market trading session. Director Lewis Taffer informed the Board of Directors of INSP that he would not stand for re-election at the company's upcoming annual meeting on May 31.

TESSCO Technologies Inc. (TESS) stock gained 4.89 percent to $18.86 in post market trading session.

GRAVITY Co. Ltd. (GRVY) stock gained 4.81 percent to $2.83 in post market session after climbing nearly 19 percent in regular trading session.

Verenium Corp. (VRNM) stock advanced 4.06 percent to $3.59 in post market trading session.

Losers:

Leap Wireless International Inc. (LEAP) stock plunged 4.74 percent to $10.05 in aftermarket trading session.

DISH Network Corp. (DISH) stock fell 3.48 percent to $28.25 in aftermarket trading session. Federal regulators on Friday delayed a decision on whether Dish Network can build a wireless cellular network, a move that could hurt the value of the satellite television company's newly acquired wireless assets, Reuters reported.

HomeAway Inc. (AWAY) stock declined 2.95 percent to $25.81 in aftermarket trading session. The stock has a 52-week low of $19.77, a 52-week high of $45.75 and $2.14 billion in market capitalization.

Yandex N.V. (YNDX) stock fell 1.98 percent to $22.80 in aftermarket trading session. The company stock climbed nearly 8 percent in regular trading session.

Fortinet Inc. (FTNT) stock declined 1.89 percent to $27.02 in post market trading session. The stock has a 52-week low of $15.78, a 52-week high of $28.56 and $4.24 billion in market capitalization.

Rambus Inc. (RMBS) stock declined 1.76 percent to $6.69 in post market trading session. The company announced Friday that it received notice that the Administrative Law Judge (ALJ) for its U.S. International Trade Commission (ITC) action against LSI Logic, MediaTek, ST Microelectronics and other Respondents have issued an Initial Determination.

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