It gives no further details but says "very generous benefactors" have covered £113,000, with WLS covering the £25,000 shortfall.
One of the whistleblowers told the JC: "Imagine how much good that [£138,000] could have done being spent on charitable purposes, especially during this crisis."
WLS did not reply to a request for comment.
The report refuses to "revisit the controversies" but cites Sir Michael's "unequivocal" findings that "there was no impediment to Rabbi David taking up his co-senior Rabbi position".
In March, whistleblowers voiced fears Sir Michael's inquiry had too narrow a remit.
The report also said WLS was in discussions with Reform Judaism, trying to "reconcile our differences".
The shul suspended its membership of the movement in February, criticising Reform for announcing a new code of conduct for clergy, saying this was "unconnected and unhelpful to our particular situation".
