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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1024795	Sun Hydraulics Corp	SNHY	Miscellaneous Fabricated Metal Products (3490)	592754337

Insiders

Cik	Name	Director	Officer	Large Shareholder	Other
1234877	Beverly Koski	No	No	Yes	No
1234878	L Christine Koski	Yes	No	Yes	No
1234879	Koski Family Lp	No	No	Yes	No
1234880	C Robert Koski	No	No	Yes	No
1234881	L Thomas Koski	No	No	Yes	No

Transaction Summary

Sold:	4,463 shares	Avg. Price: $37.82	Total Value: $168,798.99
Number of Shares After Transactions:	279,690 shares

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Disposition	2011-02-18	300	$37.75	283,853	No	4	S	Direct
Common Stock	Disposition	2011-02-18	503	$37.76	283,350	No	4	S	Direct
Common Stock	Disposition	2011-02-18	700	$37.77	282,650	No	4	S	Direct
Common Stock	Disposition	2011-02-18	200	$37.79	282,450	No	4	S	Direct
Common Stock	Disposition	2011-02-18	203	$37.79	282,247	No	4	S	Direct
Common Stock	Disposition	2011-02-18	200	$37.80	282,047	No	4	S	Direct
Common Stock	Disposition	2011-02-18	203	$37.80	281,844	No	4	S	Direct
Common Stock	Disposition	2011-02-18	524	$37.81	281,320	No	4	S	Direct
Common Stock	Disposition	2011-02-18	79	$37.82	281,241	No	4	S	Direct
Common Stock	Disposition	2011-02-18	308	$37.83	280,933	No	4	S	Direct
Common Stock	Disposition	2011-02-18	300	$37.84	280,633	No	4	S	Direct
Common Stock	Disposition	2011-02-18	1	$37.85	280,632	No	4	S	Direct
Common Stock	Disposition	2011-02-18	12	$37.85	280,620	No	4	S	Direct
Common Stock	Disposition	2011-02-18	1	$37.87	280,619	No	4	S	Direct
Common Stock	Disposition	2011-02-18	107	$37.87	280,512	No	4	S	Direct
Common Stock	Disposition	2011-02-18	100	$37.88	280,412	No	4	S	Direct
Common Stock	Disposition	2011-02-18	322	$37.89	280,090	No	4	S	Direct
Common Stock	Disposition	2011-02-18	200	$37.94	279,890	No	4	S	Direct
Common Stock	Disposition	2011-02-18	100	$38.00	279,790	No	4	S	Direct
Common Stock	Disposition	2011-02-18	100	$38.18	279,690	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	2,913,947	Direct
Common Stock	295,969	Direct
Common Stock	160,000	Direct
Common Stock	100,000	Direct
Common Stock	3,200	Indirect	BY KOSKI MANAGEMENT, INC.

Footnotes

Sales were effected pursuant to a Rule 10b5-1 trading plan adopted by Christine L. Koski on December 31, 2010.
Shares owned directly by Christine L. Koski.
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.
Shares owned directly by Beverly Koski.
Shares owned directly by Thomas L. Koski.
Shares owned directly by Robert C. Koski.
Shares owned indirectly by Beverly Koski.