UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 __________________ 1 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-34220 __________________________ 3D SYSTEMS CORPORATION (Exact name of Registrant as specifie ...