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: MCALEA KEVIN (Vice President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-18	Common Stock	A	40728	—	Acquired	81456	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-05-18	Stock Option (Right to Buy)	$7.58	A	25000	Acquired	2011-08-24	Common Stock (25000)	Direct
2011-05-18	Stock Option (Right to Buy)	$2.655	A	55000	Acquired	2003-05-15	Common Stock (55000)	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 two years with the first annual installment of 6,250 shares and in an amount of 18,750 for the second year, commencing on August 24, 2004, the first anniversary of the date of grant.

F4: The shares subject to this option vested over a period of two years in equal annual installments of 27,500 shares per year for the first year and in an amount of 27,500 for the second year, commencing on May 15, 2004, the first anniversary of the date of grant.