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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1014507	Sirona Dental Systems Inc.	SIRO	Dental Equipment & Supplies (3843)	113374812

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1415556	I Jonathan Friedman	Sirona Dental Systems, Inc. 30-30 47Th Avenue, Suite 500 Long Island City NY 11101	General Counsel & Secretary	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2012-01-03	3,000	$11.90	49,995	No	4	M	Direct
Common Stock	Disposition	2012-01-03	3,000	$44.51	46,955	No	4	S	Direct

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

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Options(Right to buy)	Disposition	2012-01-03	3,000	$0.00	3,000	$11.90

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
3,000	2011-12-08	2018-12-08	No	4	M	Direct

Footnotes

The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 15, 2011.
The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from 44.23 to 44.76, inclusive. The reporting person undertakes to provide Sirona Dental Systems, Inc., any security holder of Sirona Dental Systaems, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each seperate price within the ranges set forth in footnote (2) to this Form 4.