3D SYSTEMS CORP — Director's Dealing 2011

May 19, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3D SYSTEMS CORP (TDSC)
CIK: 0000910638
Period of Report: 2011-05-18

Reporting Person: LOEWENBAUM G WALTER II (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-18	Common Stock	A	142147	—	Acquired	284294	Indirect
2011-05-18	Common Stock	A	110847	—	Acquired	221694	Indirect
2011-05-18	Common Stock	A	11093	—	Acquired	22186	Indirect
2011-05-18	Common Stock	A	698924	—	Acquired	1397848	Direct
2011-05-18	Common Stock	A	2742	—	Acquired	1400590	Direct
2011-05-18	Common Stock	A	33509	—	Acquired	67018	Indirect
2011-05-18	Common Stock	A	19295	—	Acquired	38590	Indirect
2011-05-18	Common Stock	A	21824	—	Acquired	43648	Indirect
2011-05-18	Common Stock	A	21855	—	Acquired	43710	Indirect
2011-05-18	Common Stock	A	50057	—	Acquired	100114	Indirect
2011-05-18	Common Stock	A	181526	—	Acquired	363052	Indirect
2011-05-18	Common Stock	A	181525	—	Acquired	363050	Indirect

Footnotes

F1: These shares were issued to the Reporting Person pursuant to a two-for-one stock split distributed to the Corporation's stockholders on May 18, 2011.

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

F3: Mr. and Mrs. Loewenbaum serve as Trustees.

F4: These shares were awarded to the Reporting Person pursuant to the 2004 Restricted Stock Plan for Non-Employee Directors after given effect to the stock split referred to in note 1. The Reporting Person was awarded 1,371 shares prior to this stock split at par value, or $0.001 per share.

F5: Mr. Loewenbaum serves as Trustee.

F6: Mr. and Mrs. Loewenbaum are the general partners.

F7: Mrs. Loewenbaum serves as trustee.