X0303 4 2010-05-25 0 0001024795 SUN HYDRAULICS CORP SNHY 0001234878 KOSKI CHRISTINE L 1 0 1 0 0001234877 KOSKI BEVERLY 0 0 1 0 0001234879 KOSKI FAMILY LP 0 0 1 0 0001234880 KOSKI ROBERT C 0 0 1 0 0001234881 KOSKI THOMAS L 0 0 1 0 Common Stock 2010-05-26 4 S 0 390 25.56 D 3701046 D Common Stock 2010-05-26 4 S 0 500 25.57 D 3700546 D Common Stock 2010-05-26 4 S 0 192 25.61 D 3700354 D Common Stock 2010-05-26 4 S 0 3 25.62 D 3700351 D Common Stock 2010-05-26 4 S 0 200 25.65 D 3700151 D Common Stock 2010-05-26 4 S 0 400 25.66 D 3699751 D Common Stock 2010-05-26 4 S 0 100 25.7 D 3699651 D Common Stock 2010-05-26 4 S 0 500 25.941 D 3699151 D Common Stock 2010-05-26 4 S 0 100 25.96 D 3699051 D Common Stock 2010-05-26 4 S 0 300 25.97 D 3698751 D Common Stock 2010-05-26 4 S 0 1410 26 D 3697341 D Common Stock 2010-05-26 4 S 0 800 26.01 D 3696541 D Common Stock 2010-05-26 4 S 0 900 26.07 D 3695641 D Common Stock 2010-05-26 4 S 0 800 26.51 D 3694841 D Common Stock 2010-05-27 4 S 0 1600 25.87 D 3693241 D Common Stock 2010-05-27 4 S 0 100 25.88 D 3693141 D Common Stock 2010-05-27 4 S 0 500 25.9 D 3692641 D Common Stock 2010-05-27 4 S 0 800 25.91 D 3691841 D Common Stock 2010-05-27 4 S 0 300 25.92 D 3691541 D Common Stock 2010-05-27 4 S 0 449 25.93 D 3691092 D Common Stock 2010-05-27 4 S 0 851 25.94 D 3690241 D Common Stock 2010-05-27 4 S 0 300 25.941 D 3689941 D Common Stock 2010-05-27 4 S 0 1500 25.95 D 3688441 D Common Stock 2010-05-27 4 S 0 1100 25.951 D 3687341 D Common Stock 2010-05-27 4 S 0 500 25.97 D 3686841 D Common Stock 2010-05-27 4 S 0 400 25.98 D 3686441 D Common Stock 2010-05-27 4 S 0 1200 25.99 D 3685241 D Common Stock 2010-05-27 4 S 0 200 25.991 D 3685041 D Common Stock 2010-05-27 4 S 0 400 26 D 3684641 D Common Stock 2010-05-27 4 S 0 1000 26.01 D 3683641 D Shares owned directly by Koski Family Limited Partnership. Shares owned indirectly by Beverly Koski, Christine L. Koski, Robert C. Koski and Thomas L. Koski, each of whom is a general partner of the partnership or the controlling person of a corporate general partner of the partnership. Report is two of three Paul R. Lynch, as Attorney-in-Fact for CHRISTINE L. KOSKI, BEVERLY KOSKI, KOSKI FAMILY LIMITED PARTNERSHIP, ROBERT C. KOSKI AND THOMAS L. KOSKI 2010-05-27