In this diversity action involving negligence claims, BFC Gas Company and BFC Electric Company appeal from the order and judgment of the District Court 1 excluding their expert witness opinions and granting Gypsum Supply Company’s motion for summary judgment. Following careful review, we affirm these rulings for the reasons given in the District Court’s order. See 8th Cir. R. 47B. To the extent appellants challenge the subsequent order imposing sanctions, we lack jurisdiction because appellants did not timely appeal this order. See Dieser v. Cont’l Cas. Co., 440 F.3d 920, 924 (8th Cir. 2006). We deny the pending motion to supplement the record.