Taser

(TASR)

was under pressure Friday after estimating first-quarter revenue of $10 million, almost $4 million below estimates. The company said recent bad publicity about its stun guns has caused a "temporary disruption" in its sales channel. Taser outlined a series of steps to stem the news flow, including appointing a panel of experts who will "advise the company on public education and public relations issues."

Cognos

(COGN)

said it earned $54.3 million, or 58 cents a share, for the fourth quarter ended Feb 28, up from $46.1 million, or 50 cents a share, a year ago. Revenue for the quarter was $256.3 million. Excluding a tax gain of 7 cents, the company would have earned 51 cents a share. Analysts were looking for 48 cents a share on revenue of $240.5 million, according to Thomson First Call. Cognos put first-quarter earnings at 22 cents to 25 cents a share on revenue of $202 million to $210 million. Both were well short of estimates and the stock tanked after hours.

Red Hat

(RHAT)

said that it earned $11.8 million, or 6 cents a share, for the fourth quarter ended Feb. 28. Revenue for the quarter was $57.5 million. Analysts were expecting 6 cents a share on revenue of $56 million. The company also announced that it has expanded its stock buyback program to $250 million and the board has also authorized the repurchase of up to $50 million of its 0.5% convertible senior debt due 2024. The stock was down 30 cents, or 2.75%, to $10.61 in after hours trading.

Restoration Hardware

(RSTO)

matched Wall Street's expectations by earning $10.6 million, or 28 cents a share, for the fourth quarter ended Jan. 29, up from the $8 million, or 21 cents, a year ago. Revenue for the quarter was $187.9 million. Analysts were expecting 28 cents a share on revenue of $188 million, according to Thomson First Call. The stock was down 20 cents, or 3.5%, to $5.50 in after hours trading.

Transmeta

(TMTA)

announced that it has entered into a technology deal with

Sony

(SNE) - Get Report

. Transmeta will provide engineering services to the Sony Group. Financial terms of the agreement were not disclosed. The company also said that Arthur L. Swift has been promoted to President and C.E.O., effective immediately. Transmetta was up 22 cents, or 23.6%, to $1.15 in after hours trading, while Sony was unchanged at $40.02.