HELIOS TECHNOLOGIES, INC. — Director's Dealing 2011

May 20, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SUN HYDRAULICS CORP (SNHY)
CIK: 0001024795
Period of Report: 2011-05-18

Reporting Person: KOSKI CHRISTINE L (Director, 10% Owner)
Reporting Person: KOSKI BEVERLY (10% Owner)
Reporting Person: KOSKI FAMILY LP (10% Owner)
Reporting Person: KOSKI ROBERT C (10% Owner)
Reporting Person: KOSKI THOMAS L (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-18	Common Stock	S	1354	$48	Disposed	63800	Direct
2011-05-19	Common Stock	S	4151	$48.6201	Disposed	59649	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	2763947	Direct
Common Stock	295969.427	Direct
Common Stock	249940	Direct
Common Stock	153700	Direct
Common Stock	3200	Indirect

Footnotes

F1: Shares owned directly by Robert C. Koski.

F2: The range of prices for the transactions reported is $48.14 - $49.11. The undersigned hereby undertakes to provide upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

F3: 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.

F4: Shares owned directly by Beverly Koski.

F5: Shares owned directly by Christine L. Koski.

F6: Shares owned directly by Thomas L. Koski.

F7: Shares owned indirectly by Beverly Koski.