April 13 (Bloomberg) -- The following is a list of companies whose shares may have unusual price changes in U.S. markets tomorrow. Stock symbols are in parentheses after company names, and prices are as of 6:15 p.m. New York time on April 11 unless stated otherwise.

Agria Corp.'s American depositary receipts (GRO US) fell 47 cents, or 10 percent, to $4.10 after the official close of U.S. exchanges. The Chinese provider of corn seeds, tree seedlings and products for sheep breeding had a suit seeking class-action status filed against it. The suit alleges the company failed to disclose employment agreements with some executives, according to a statement by law firm Schiffrin Barroway Topaz & Kessler LLP.

General Electric Co. (GE US): The second-largest U.S. company by market value may rise to $40 a share if it can meet its reduced 2008 earnings guidance, after first-quarter profit missed analysts' estimates last week, Barron's said, citing no one. The shares fell $4.70, or 13 percent, to $32.05 in regular trading.

Kimball International Inc. (KBALB US): The maker of electronics and furniture said it will cut jobs, sell a facility in Poland and shut sites in Ireland and Wales. The stock fell 31 cents to $11.05 in regular trading.

Simtek Corp. (SMTK US): Cypress Semiconductor Corp. (CY US), the maker of programmable chips, offered to buy the rest of the memory-chip maker for $2.20 a share. The stock lost 1 cent to $2.55 in regular trading.

Valero Energy Corp. (VLO US): The largest U.S. refiner may rise as much as 64 percent if the company can buy and refine cheaper, heavier oils left after gasoline production, Barron's said, citing Deutsche Bank AG analyst Paul Sankey. Valero fell $1.42, or 2.9 percent, to $47.70 in regular trading.

Washington Mutual Inc. (WM US): The savings and loan that's shutting some lending offices said it expects to incur pretax restructuring costs of $140 million to $180 million as it eliminates as many as 3,000 jobs. The stock fell 47 cents to $10.95 in regular trading.

To contact the reporter on this story: Lu Wang in New York at lwang8@bloomberg.net

Last Updated: April 13, 2008 11:33 EDT