Rumors on twitter are that they got rugpulled by a creditor calling in the debt, under T&Cs, rather than running out of money with predictable timing.
Did they actually formally file for insolvency before the new buyout? If they did then there eventually should be an impartial report on this, otherwise we might never know exactly what happened.
Top tweet reply is Matt Levine’s take (edit: wrong matt levine)
Additionally, fmr SVB employee replies: "SVB Canada’s loans were sold to National Bank who has some tech lending chops but no where close to SVB nor the flexibility."