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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1423824	Alder Biopharmaceuticals Inc	ALDR	Pharmaceutical Preparations (2834)	000000000

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1605672	L.p. Ix Associates Srb	13355 Noel Road Suite 1350 Dallas TX 75240	No	No	Yes	No
1605673	L.p. Ix Fund Rosen Sevin	13455 Noel Road, Suite 1670 Dallas TX 75240	No	No	Yes	No
1605739	L.p. Fund Affiliates Ix Rosen Sevin	13455 Noel Road, Suite 1670 Dallas TX 75240	No	No	Yes	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	Disposition	2015-05-19	1,136,100	$37.02	4,048,874	No	4	S	Indirect	See Footnote

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	See Footnote

Footnotes

Represents 1,136,100 Common Shares sold directly by Sevin Rosen Fund IX L.P. pursuant to Rule 144 under the Securities Act of 1933, as amended.
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $37.00 to $39.80, inclusive. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Total Common Shares of 4,048,874 represents 3,947,770 shares owned directly by Sevin Rosen Fund IX L.P. ("SRFIX") and 101,104 shares owned directly by Sevin Rosen IX Affiliates Fund L.P. ("SRIX AFF"). SRB Associates IX L.P. ("SRBAIX") is the general partner of SRFIX and SRIX AFF, and in that capacity has shared voting and dispositive power over such shares. SRBAIX disclaims beneficial ownership of such shares except to the extent of its pecuniary interest.