It is my understanding that UPenn requires a "mid-year " report for ED applicants in February. Many schools also want to see to date/quarter grades and request from your guidance counselor - this is different and is happening more this year due to the inconsistent grading across the world for junior year.
If you are on the semester system, your counselor will gather up your grades to date from your teachers and submit a quarter report - these are not official transcript grades - but your grades by that date.
Calling it mid-year is a bit confusing - as it really is quarter 1 or 1st trimester for ED applicants. You will then be asked to submit a true midyear report after acceptance and by February.
For many schools you can see on your portal if quarter grades are missing. AO’s will reach out to your admission counselor for this information, in most cases. I would not read anything into the request except for the admissions office needs this for your file and to confirm that your grades are tracking senior year.
Waiting is hard - hang in there and make sure your counselor provided the info and keep track of all items/deadlines on your portal.