X0306 4 2023-03-14 0 0001816613 Markforged Holding Corp MKFG 0001494796 Schwartz Mark Joseph C/O MARKFORGED HOLDING CORPORATION 480 PLEASANT STREET WATERTOWN MA 02472 0 1 0 0 Chief Financial Officer Common Stock 2023-03-14 4 S 0 30000 0.97 D 1023446 D This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 14, 2021. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $0.95 to $1.02, inclusive. The reporting person undertakes to provide to the issuer, any stockholder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote. /s/ Stephen Karp, as Attorney-in-Fact 2023-03-16