X0303 4 2010-06-04 0 0001019361 ROFIN SINAR TECHNOLOGIES INC RSTI 0001354691 Merk Thomas PETERSBRUNNER STRABE 1B STARNBERG 2M 82319 GERMANY 0 0 0 1 COO-Micro Rofin-Sinar Technologies Inc. 2010-06-04 4 S 0 3000 23.84 D 3000 D Employee Stock Option Right to Buy 16.355 2010-06-04 4 H 0 0 0 A 2005-03-18 2014-03-18 Common Stock - RSTI 0 50000 D Employee Stock Option Right to Buy 17.11 2010-06-04 4 H 0 0 0 A 2006-03-17 2015-03-17 Common Stock - RSTI 0 50000 D Employee Stock Option Right to Buy 26.045 2010-06-04 4 H 0 0 0 A 2007-03-16 2016-03-16 Common Stock - RSTI 0 50000 D Employee Stock Option Right to Buy 28.5 2010-06-04 4 H 0 0 0 A 2008-03-15 2017-03-15 Common Stock - RSTI 0 60000 D Employee Stock Option Right to Buy 40.2 2010-06-04 4 H 0 0 0 A 2009-03-19 2018-03-19 Common Stock - RSTI 0 30000 D Employee Stock Option Right to Buy 15.04 2010-06-04 4 H 0 0 0 A 2010-03-18 2019-03-18 Common Stock - RSTI 0 30000 D Employee Stock Option Right to Buy 22.83 2010-06-04 4 H 0 0 0 A 2011-03-17 2020-03-17 Common Stock - RSTI 0 30000 D Value represents the exercise price of the shares granted under the Plan. No transaction being reported at this time - only reporting holdings as of this date. Grants to purchase shares of common stock under the Plan are exercisable in 20% increments on each of the first five anniversaries of the date of grant. The grants to purchase shares of common stock under the Plan expire following the tenth anniversary of the date of grant. Number represents the number of remaining outstanding and vested shares under the particular grant date. None of these shares are beneficially owned yet. Number represents the number of available shares remaining under the particular grant date. 40,000 shares are currently vested and exercisable and the remaining 10,000 shares have not yet vested. None of these shares are beneficially owned yet. Number represents the number of available shares remaining under the particular grant date. 36,000 shares are currently vested and exercisable and the remaining 24,000 shares have not yet vested. None of these shares are beneficially owned yet. Number represents the number of available shares remaining under the particular grant date. 12,000 shares are currently vested and exercisable and the remaining 18,000 shares have not yet vested. None of these shares are beneficially owned yet. Number represents the number of available shares remaining under the particular grant date. 6,000 shares are currently vested and exercisable and the remaining 24,000 shares have not yet vested. None of these shares are beneficially owned yet. Number represents the number of available shares remaining under the particular grant date. 30,000 have not yet vested. None of these shares are beneficially owned yet. Cindy Denis 2010-06-07