Martensen v. Koch

  1. April 30, 2013

    Oxbow Owner Koch Can't Shake Former Exec's Captivity Suit

    A California federal judge refused Tuesday to dismiss most claims brought by a former Oxbow Carbon & Minerals Inc. executive accusing the company's billionaire owner William Koch of holding him captive after he questioned the legality of an alleged tax evasion plan.

  2. January 17, 2013

    Ex-Oxbow Exec's Captivity Claim False, Koch Says

    Billionaire Oxbow Carbon & Minerals Inc. owner William Koch asked a California federal judge Wednesday to dismiss a former executive's suit, saying the executive's claim he was held captive after questioning an alleged tax evasion scheme was retaliation for fraud claims against him.

  3. October 15, 2012

    Ex-Oxbow Exec Alleges Billionaire Koch Held Him Captive

    A former executive for coal company Oxbow Carbon & Minerals Inc. sued the company's billionaire owner William Koch in California federal court Thursday, claiming Koch held him captive after he questioned the legality of an alleged tax evasion plan.