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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
21510	Coherent Inc	COHR	Laboratory Analytical Instruments (3826)	941622541

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1234297	Helene Simonet	P. O. Box 54980 Santa Clara CA 95056-0980	Exec Vp And Cfo	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
Common Stock	Acquisiton	2010-11-16	6,910	$32.95	30,684	No	4	M	Direct
Common Stock	Disposition	2010-11-16	6,910	$42.04	23,774	No	4	S	Direct
Common Stock	Acquisiton	2010-11-17	1,733	$32.95	25,507	No	4	M	Direct
Common Stock	Disposition	2010-11-17	1,733	$42.04	23,774	No	4	S	Direct
Common Stock	Acquisiton	2010-11-17	3,400	$0.00	27,174	No	4	M	Direct
Common Stock	Disposition	2010-11-17	1,588	$42.06	25,586	No	4	F	Direct
Common Stock	Acquisiton	2010-11-18	13,182	$32.95	38,768	No	4	M	Direct
Common Stock	Disposition	2010-11-18	8,271	$42.40	30,497	No	4	S	Direct
Common Stock	Disposition	2010-11-18	4,911	$43.19	25,586	No	4	S	Direct
Common Stock	Acquisiton	2010-11-18	2,489	$35.01	28,075	No	4	M	Direct
Common Stock	Disposition	2010-11-18	2,489	$43.19	25,586	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	F	Direct
No	4	M	Direct
No	4	S	Direct
No	4	S	Direct
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	Non Qualified Stock Option (right to buy)	Disposition	2010-11-16	6,910	$32.95	6,910	$32.95
Common Stock	Non Qualified Stock Option (right to buy)	Disposition	2010-11-17	1,733	$32.95	1,733	$32.95
Common Stock	Restricted Stock Unit	Disposition	2010-11-17	3,400	$0.00	3,400	$0.00
Common Stock	Non Qualified Stock Option (right to buy)	Disposition	2010-11-18	13,182	$32.95	13,182	$32.95
Common Stock	Non Qualified Stock Option (right to buy)	Disposition	2010-11-18	2,489	$35.01	2,489	$35.01

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
154,832	2009-04-15	2013-10-03	No	4	M	Direct
153,099	2009-04-15	2013-10-03	No	4	M	Direct
149,699		2011-11-17	No	4	M	Direct
136,517	2009-04-15	2013-10-03	No	4	M	Direct
134,028	2008-03-30	2012-03-30	No	4	M	Direct

Footnotes

Sold Pursuant to a Rule 10b5-1 sales plan adopted on May 28, 2010.
Represents the weighted average sales price for the shares. The range of prices for such sales was $42.00 to $42.16.
Represents the weighted average sales price for the shares. The range of prices for such sales was $42.00 to $42.166.
This Restricted Stock Unit award vests over three years with one third of the grant vesting on each of the subsequent anniversaries of the grant.
Represents shares withheld to satisfy minimum tax withholding obligations for released restricted units.
Represents the weighted average sales price for the shares. The range of prices for such sales was $42.24 to $42.57.
Represents the weighted average sales price for the shares. The range of prices for such sales was $43.00 to $43.32.