The New Zealand Herald made contact with Mainfreight yesterday to confirm details in Ready Fire Aim.
The book says the company was aware, while conducting due diligence on the purchase, that Wim Bosman was set to lose three customers - Samsung, Sara Lee and European games and toy giant Ravensburger.
But Mainfreight did not become aware of the loss of a fourth customer, Giant Bikes, until after it took control of Wim Bosman on April 1, 2011, according to the book.
In its statement today the company says the Herald wrongly suggested that Mainfreight did not disclose the Giant loss.
The company points out that managing director Don Braid told shareholders at the firm's 2012 annual meeting: "Unfortunately, while two of the three account losses were known during due diligence, the third and largest came as a surprise."
The loss of European customers are covered in other company releases, including the 2012 annual report, but Mainfreight does not appear to have disclosed to the market the allegations it makes in Ready Fire Aim about Wim Bosmon knowingly withholding information about the impending loss of the Giant account, or the legal challenge it intends to mount against the former owners.