3D SYSTEMS CORP — Director's Dealing 2011

May 20, 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: REICHENTAL ABRAHAM N (Director, President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-18	Common Stock	A	331616	—	Acquired	663232	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-05-18	Stock Option (Right to Buy)	$3.6095	A	55401	Acquired	2013-09-19	Common Stock (55401)	Direct
2011-05-18	Stock Option (Right to Buy)	$3.6095	A	344599	Acquired	2013-09-19	Common Stock (344599)	Direct

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

F3: The shares subject to this option vested over a period of three years with the first annual installment of 3,462 shares and in an amount of 10,388 for the second year and in an amount of 41,551 for the third year, commencing on December 31, 2003, the first anniversary of the date of grant.

F4: The shares subject to this option vested over a period of two years with the first annual installment of 86,150 shares and in an amount of 258,450 for the for the second year, commencing on September 19, 2004, the first anniversary of the date of grant.