Not in any traditional sense of the term money laundering.
Money laundering is where it is the source of the money that is the problem, from criminal activities.
The object is to turn dirty money into clean money so, for example, the criminal buys a property using the cash from extortion , sells the property and gets money which has come from the sale of a house supplied by the solicitors acting on the house transaction - clean money.
Here the initial monies are supplied by the large charity so there source is known.
However, bear in mind does not mean that the transaction was not fraudulent even if it did not constitute money laundering.