X0609 4 2026-09-01 false 0001657573 Xometry, Inc. XMTR 0001869814 Altschuler Randolph false C/O XOMETRY, INC. 6116 EXECUTIVE BLVD, SUITE 800 NORTH BETHESDA MD 20852 true false false false true Class A Common Stock 2026-09-01 4 S false 4607.00 90.4714 D 556663.00 I Held by spouse Class A Common Stock 2026-09-01 4 S false 4912.00 91.0264 D 551751.00 I Held by spouse Class A Common Stock 2026-09-01 4 S false 481.00 92.0856 D 551270.00 I Held by spouse Class A Common Stock 428750.00 D Class B Common Stock 1475311.00 D Class A Common Stock 455248.00 I Held by Altschuler Family Trust (2020) Class A Common Stock 324533.00 I Held by The Matthew Sladkin Altschuler 2012 Trust Class A Common Stock 324533.00 I Held by The Noah Sladkin Altschuler 2012 Trust Class A Common Stock 324533.00 I Held by The Sasha Sladkin Altschuler 2012 Trust Represents shares sold in a transaction that was effected automatically pursuant to a Rule 10b-5 trading plan adopted by the reporting person's spouse at least 90 days prior to the trading date. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.70 to $90.70, inclusive. The reporting person undertakes to provide to Xometry, Inc., any security holder of Xometry, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price in the ranges set forth in footnotes (2), (3) and (4) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $90.725 to $91.52, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.995 to $92.16, inclusive. /s/ Kristie Scott, Attorney-in-Fact 2026-09-03