Judge Stephanos Bibas has begun his service on the Third Circuit. He is now listed as a judge on the circuit’s website, here.
Judge Bibas was confirmed by the Senate back on November 2, and according to his official court-website biography he received his commission on November 20, but he did not formally join the court and begin his duties until he took the oath. I believe that happened today, but I have not found official confirmation of that.
Judge Bibas becomes the court’s 12th active judge, with two judgeships open.
Welcome to the Third Circuit, Judge Bibas!