German-based chemical maker BASF had made a deal to buy Ames-based Becker Underwood, which makes seed treatment and other farm products.
The Des Moines Register reports that BASF says the purchase price is $1.02 billion.
BASF is based in Ludwigshafen, Germany, and produces chemicals and plastics as well oil and gas and agricultural herbicides and fertilizers.
BASF spokeswoman Anne Burt says final decisions haven't been made about the future of Becker Underwood's chief executive officer, Peter Innes, other managers or other workers.
Becker has more than 210 employees in Ames; St. Joseph, Mo.; and Caldwell, Idaho; and nearly 270 more in several other countries.
Becker Underwood was formed in 1982 by Jeff Becker and Roger Underwood. They sold controlling interest to Norwest Equity Partners of Minneapolis in 2004.