It should under myNEU, self-service tab, under financial aid status. On the front page of the financial aid status was the disclosure statement, I think (this is all from memory so it might be wrong).
I’m also able to access it from the admissions portal. Google “northeastern admissions portal”, go to NU admissions website, click “check my application status”, type in your info, and when you get to the accepted screen click the Financial Aid tab on the left side of the screen. That should have all the info. The last page of that document had my disclosure statement.