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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
878526	Natus Medical Inc	BABY	Electromedical & Electrotherapeutic Apparatus (3845)	770154833

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1221306	Christopher Chune Dong Chung	C/O Natus Medical Incorporated 1501 Industrial Road San Carlos CA 94403	Vp Medical Affairs, Qa/Ra	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, $0.001 Par Value Per Share	Acquisiton	2013-11-12	22,841	$4.51	143,813	No	4	M	Direct
Common Stock, $0.001 Par Value Per Share	Disposition	2013-11-12	22,841	$21.17	120,972	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	Nonqualified Stock Option	Disposition	2013-11-13	22,841	$0.00	22,841	$4.51

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
4,318	2004-03-25	2014-02-25	No	4	M	Direct

Footnotes

This transaction was executed in multiple trades at prices ranging from $21.00 to $21.46. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
Vested as to 12.5% of the shares subject to the option on March 25, 2004 and as to 1/48th of the shares subject to the option each month thereafter.