Business notebook
Mum's the word: Waltham diagnostics and pregnancy test maker Inverness Medical Innovations Inc. said Biosite Inc. failed to respond to the $90 per share buyout offer made Thursday.
Considering options: Mirant Corp. said it is considering a possible sale and other moves to boost the power provider's value for shareholders. Its shares rose $3.44, or 8.5 percent, to close at $44.08.
Not bluffing: The parent company of three casinos bearing Donald Trump's name moved to block the results of a vote by dealers at Trump Plaza to join a labor union. Trump Entertainment Resorts Inc. filed an objection with the National Labor Relations Board seeking to set aside the results of the election March 31 in which dealers voted more than 2-to-1 to join the United Auto Workers.
Isuzus in the heart of Dixie: Isuzu Motors Ltd., Japan's largest maker of small commercial trucks, bought 133 acres in Alabama for $7.8 million as it considers assembling vehicles in the United States for the first time since 2002.
Ex-checker: Karl Winters, the chief financial officer of video game company Take-Two Interactive Software Inc., resigned effective immediately, the company said. Lainie Goldstein, senior vice president of finance, has been named interim CFO.
On track: Warren Buffett's Berkshire Hathaway Inc., the largest shareholder in Burlington Northern Santa Fe Corp., boosted its stake to 10.9 percent last week. Berkshire bought 1.6 million shares of the second-largest US railroad company for more than $81 a share, according to filings with the Securities and Exchange Commission, valuing its stake as of April 5 at more than $3.23 billion.
Anchored: HealthSouth Corp. founder Richard Scrushy, convicted of bribery, must wear a monitoring device when traveling outside his home area after a judge found he took an unauthorized yacht ride last month.
Bull's-eye: Companies will be able to use Google's ad system to purchase ads targeted only to AOL sites such as MapQuest, Moviefone, and the aol.com portal under a new AOL program.
Wireless link: Flash memory maker SanDisk Corp. said it will pair its new wireless music player, Sansa Direct (above), with free and subscription music services from Yahoo Inc.
(Globe wire services) 