UMD says this, so I woud send Q1 grades:
Mid-year reports and/or first quarter grades can be submitted, though they are not considered required application materials unless they are officially requested during the decision notification process.
I don’t think UT Austin accepts Q1 or S1 senior year grades, but don’t see that clearly stated on the website.
For UNC, my understanding is they will only ask if they want them, which they typically don’t. If deferred or admitted via EA, then they will want S1 grades.