One thing that's unclear:
How much Dominion is worth in total? We don't know. So don't know what $400mil means in terms of % of its total worth.

But assuming this $400mil deal went thru, it's going to give a good chunk of Dominion to UBS AG.

Sauce:
https://tokenist.com/what-we-know-dominion-voting-systems-and-ubs-securities/
https://www.buyoutsinsider.com/ex-carlyle-cerberus-execs-shop-staple-street-holds-one-and-done-dose-on-f.

So the next question is: What do we know about Swiss bank UBS AG?