What the latest ownership deals mean for Sunderland
to sell his remaining shares, which would potentially hold significant value were the club to continue on its recent trajectory.
His takeover/return at Eastleigh was confirmed earlier in May and less than a month later, he has sold up at Sunderland in full.
None of the parties involved have commented on the latest development but it very obviously gives all parties clarity ahead of the new season, and Donald added resources following his Eastleigh return.
In terms of Sunderland's day-to-day governance, it will change very little.
Donald had long since relinquished any formal role at the club, and has not sat on the club's board since Louis-Dreyfus' arrival. Though he has very occasionally attended games since then, he has by and large made good on his promise to watch from afar after relinquishing his majority stake.
As he admitted in March, his role was essentially reduced to occasional conversations with other shareholders, and writing the occasional cheques. Here is where the only change really comes, though it is not an insignificant one by any means.
Budgets and investment are agreed by the shareholding group, who then invest proportionate to their stake in the club. As such, the club's financial direction is now purely the domain of Louis-Dreyfus and Sartori.
As such, it is fair to see this latest development as the next stage of the ownership's project to grow the club to the point where it is a realistic contender for promotion to the Premier League, and to then try and stay there.
Louis-Dreyfus and Sartori want to return the club to the top tier within five years of their arrival and this is another part of moving the club along that trajectory.
It is also a significant moment for many fans, who had long called for a formal end to the acrimonious Madrox era.
Sartori, of course, remains as a link to the Donald era and to many supporters he remains something as an enigmatic figure.
He is vice-president at AS Monaco and has major political ambitions in Uruguay. As such, his involvement in Sunderland is relatively limited. He does attend some games, and also sits on the board.
Perhaps the biggest difference from the early days of his time on Wearside is that he was then spoken of as a potential major player in the club's future, with a larger role more than once said to be in the offing. Now he is seen as a close ally of Louis-Dreyfus but very much the secondary partner, offering counsel and of course financial support.
Louis-Dreyfus has spoken of the role Sartori can play in terms of his contacts, and the pair are said to be closely aligned in their longterm vision.
How Sartori's involvement develops in line with his other interests remains unknown, but there is no doubt that Louis-Dreyfus is now very much the driving force at the club.
Perhaps the most significant aspect of this news is that after over a decade of tumult, supporters can now expect a period of stability at boardroom level. That could only be a positive in terms of what then happens on the pitch.
A club statement read: "Sunderland AFC today announces that Kyril LouisDreyfus has increased his shareholding in the Club.
"Mr Louis-Dreyfus has increased his stake to 64%, with Juan Sartori increasing his stake to 36%.
"The shares have been acquired through the purchase of shares previously held by Stewart Donald, who has now exited the Club’s shareholder group entirely.”