Fresenius took a pretax charge against earnings of $590 million for the expected settlement.
Without charges arising from the expected settlement, net income would have been $5.10 to $5.20 a share.
Under the expected settlement, Iran will accept curbs on its nuclear programme in exchange for extensive sanctions relief.
The expected settlement in the refinery case signals the government's willingness to take a hard line in forcing companies to redress environmental and worker safety problems.
The people said the expected settlement, which could come as early as Friday, would include more than $450 million in fines and wider sanctions, the largest penalties to date related to the rate-rigging inquiry.
As a result, the size of any final regulatory deal would be based in part on the expected settlement cost of the private litigation, coupled with an analysis of how much more in penalties Andersen would be able to afford.
In addition, the expected settlement is as close or closer to the true value of the claim than in the absence of a settlement escrow.
It's not clear whether the estimates had been updated to include the expected settlement.
EDMC also faces other lawsuits that could be wrapped into the expected settlement.
Excluding charges of 53 cents per share for the repatriation and 14 cents for the expected settlement, Duke reported an adjusted profit of 86 cents per share in the quarter ended Dec. 31, below the average analyst estimate of 88 cents, according to Thomson Reuters I/B/E/S.
