144 0001869814 XXXXXXXX LIVE 0001657573 Xometry, Inc. 001-40546 6116 Executive Blvd Suite 800 North Bethesda MD 20852 2403357980 The Altschuler Family Trust 2020 Affiliate Class A Common Stock UBS Financial Services Inc

1000 Harbor Blvd 3rd Floor Weehawken NJ 07086

20000 1756120 51123487 05/21/2026 Nasdaq Class A Common Stock 07/02/2021 Gift Cheryl Altschuler Y 07/02/2021 500000 08/29/2013 N/A N Randolph Altschuler

6116 Executive Blvd Suite 800 North Bethesda MD 20852

Xometry, Inc. Class A Common 02/26/2026 31928 1387102 Randolph Altschuler

6116 Executive Blvd Suite 800 North Bethesda MD 20852

Xometry, Inc. Class A Common 04/02/2026 5721 238654 Randolph Altschuler is a director at XMTR. The Altschuler Family Trust 2020 is the seller. 05/21/2026 /s/JOSEPH CASSIDY, for UBS Financial Services Inc, as attorney-in-fact for The Altschuler Family Trust 2020