NEW YORK (

TheStreet

) --

American Dental Partners

( ADPI) said it agreed to be bought by funds affiliated with private-equity firm

JLL Partners

for $19 a share in cash, representing a premium of 83% over American Dental's closing price on Friday. The total value of the deal is roughly $398 million.

American Dental also reported third-quarter earnings of 27 cents a share, beating the Wall Street consensus target of 23 cents.

Shares were surging 79.2% to $18.60.

Specialty vehicles provider

Force Protection

(FRPT) - Get Report

agreed to be bought by combat vehicle manufacturer

General Dynamics

(GD) - Get Report

for $5.52 a share, or roughly $360 million.

Shares were soaring 33% to $5.60.

Mobile broadband company

Tekelec

( TKLC) agreed to be bought by a consortium led by

Siris Capital

for about $780 million. Under the deal, Tekelec's stock will be acquired for $11 a share in cash, representing an 11% premium over its closing price on Nov. 4.

Tekelec also reported third-quarter profit of 19 cents a share, beating estimates by a penny.

Shares were surging 9.9% to $10.88.

BP's

(BP) - Get Report

planned $7.1 billion sale of a stake

in

Pan American Energy

to

Cnooc

(CEO) - Get Report

has fallen apart.

Bridas Corp.

, which is owned by China's Cnooc, and by the Bulgheroni family of Argentina, said late Saturday it scrapped the transaction, citing legal reasons and BP's behavior during deal talks.

BP, in a statement, said its financial condition has improved significantly over the past year and that it will keep its stake in Pan American Energy.

BP was falling 1.3% to $43.27.

Pay TV provider

DISH Network

(DISH) - Get Report

reported third-quarter profit of 71 cents a share, missing the average analyst estimate by 2 cents. Shares were down 0.9% to $23.28.

Barnes & Noble

(BKS) - Get Report

on Monday is expected to unveil a new tablet device and could cut the price of its Nook Color, according to reports.

The bookseller plans a "very special announcement" for Monday.

Barnes & Noble's new tablet device is a response to

Apple's

(AAPL) - Get Report

iPad and

Amazon's

(AMZN) - Get Report

Kindle Fire. Apple shares were flat at $399.88 and Amazon shares were lower by 0.2% to $216.

Carphone Warehouse

, the U.K. cell phone retailer, on Monday said it plans to sell its stake in a U.S. mobile phone venture to its partner

Best Buy

(BBY) - Get Report

for $1.34 billion. Best Buy shares were flat at $27.29.

Berkshire Hathaway

(BRK.A) - Get Report

reported a drop of 24% in third-quarter profit on sharp declines in the value its equity derivative contracts.

Earnings reports also are expected Monday from

Sysco

(SYY) - Get Report

and

Louisiana-Pacific

(LPX) - Get Report

.

-- Written by Joseph Woelfel and Andrea Tse in New York.

>To contact the writer of this article, click here:

Andrea Tse

.

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Next Year Will Get Even Uglier for U.S. Investors

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