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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	Insider Title	Director	Officer	Large Shareholder	Other
1033501	M Stephen Dow	C/O Sevin Rosen Funds 13355 Noel Road, Suite 1350 Dallas TX 75240		Yes	No	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	Disposition	2015-08-31	16,218	$38.75	282,278	No	4	S	Indirect	See Footnote

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

Footnotes

Represents 15,877 Common Shares sold directly by Sevin Rosen Fund IX L.P. and 341 Common Shares sold directly by Sevin Rosen IX Affiliates Fund 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 pricing ranging from $38.61 to $38.92 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 282,278 represents 88 shares owned by SRB Associates IX L.P. and 282,190 shares owned directly by The Dow Family Trust ("Dow Trust"). Reporting person is a member of the general partner of SRBAIX and disclaims beneficial ownership except to the extent of his proportionate interest in these shares. Reporting person is a trustee of the Dow Trust.