3D SYSTEMS CORP — Director's Dealing 2011

Mar 16, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3D SYSTEMS CORP (TDSC)
CIK: 0000910638
Period of Report: 2011-03-16

Reporting Person: MOORE KEVIN S (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-03-16	Common Stock	S	680000	$41.80	Disposed	1560857	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	25150	Direct

Footnotes

F1: These securities are owned by various investment accounts for which The Clark Estates, Inc., a New York corporation, provides administrative and management services. The Clark Estates, Inc. may be deemed to be the beneficial owner of those securities. The Reporting Person is President and a director of The Clark Estates, Inc.

F2: The Reporting Person disclaims beneficial ownership of these securities as well as any pecuniary interest therein.