Acxiom

(ACXM)

said it earned $14.8 million, or 16 cents a share, for the fourth quarter ended March 31, compared with $15.9 million, or 17 cents a share, a year ago. Revenue for the quarter was $322.5 million. The fourth-quarter results included a $3.6 million non-cash charge related to the vesting of stock options. Excluding items, the company earned 18 cents a share. Analysts expected earnings of 21 cents a share on revenue of $314.8 million, according to Thomson First Call. The stock was down 50 cents, or 2.59%, to $18.80 in after-hours trading.

Willbros Group

(WG)

said it will delay the filing of its quarterly report for the quarter ended March 31. The company's audit committee has been conducting an investigation into the activities of the former president and employees of its international division. The company expects to issue an update on May 16, after the close. The stock was unchanged at $16.62.

Sonic Solutions

( SNIC) announced that it has entered into a multi-year license agreement with

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Yahoo!

(YHOO)

for Sonic's AuthorScript, which is Sonic's digital music CD/DVD burning and ripping engine. The technology is to be used with Yahoo! Music and Musicmatch Jukebox 10. Sonic Solutions was up $1.65, or 10.54%, to $17.30 in after-hours trading, while Yahoo! was down 8 cents, or 0.23%, to $34.80 in after-hours trading.

Caesars Entertainment

(CZR) - Get Report

announced that it has agreed to sell its Reno Hilton casino resort to Grand Sierra Resort Corp. for $150 million. The transaction is expected to close by the end of the fourth quarter and is subject to regulatory approvals. The stock was up 10 cents, or 0.49%, to $20.47 in after-hours trading.

Boston Properties

(BXP) - Get Report

announced that it has raised its quarterly dividend 4.6% to 68 cents for the period from April 1 to June 30. It is payable on July 29 to shareholder of record as of June 30. The stock was unchanged at $66.95.