The stated reason was that Todos appointed Gerald, a US-based executive, as Chief Executive Officer, and Daniel Hirsch, an Israeli-based executive of American descent, as Chief Financial Officer to effectuate the relocation of Todos from Israel to the US.

Not sure if this is still the plan, but last October AMBS announced that its license agreement with Emerald included a provision pursuant to which Emerald planned to buy AMBS.

"Pursuant to the agreement, upon certain conditions, Emerald intends to initiate a tender offer to acquire all outstanding shares of Amarantus."