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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1158223	Affymax Inc	AFFY	Pharmaceutical Preparations (2834)	000000000

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1344153	H Jeffrey Knapp	C/O Affymax, Inc. 4001 Miranda Ave. Palo Alto CA 94304	Chief Commercial Officer	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	Disposition	2012-08-13	4,659	$15.95	17,769	No	4	S	Direct
Common Stock	Acquisiton	2012-08-15	3,000	$6.23	20,769	No	4	M	Direct
Common Stock	Acquisiton	2012-08-15	1,584	$10.99	22,353	No	4	M	Direct
Common Stock	Disposition	2012-08-15	4,584	$16.48	17,769	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	S	Direct
No	4	M	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	Stock Option (Right to Buy)	Disposition	2012-08-15	3,000	$0.00	3,000	$6.23
Common Stock	Stock Option (Right to Buy)	Disposition	2012-08-15	1,584	$0.00	1,584	$10.99

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
33,750		2020-07-21	No	4	M	Direct
10,747		2019-01-14	No	4	M	Direct

Footnotes

In connection with the grant of 7,500 shares of restricted stock units ("RSUs") on July 11, 2011 and the grant of 8,125 shares of RSUs on July 22, 2010, 2,500 shares vested on July 11, 2012 and 4,062 shares vested on July 22, 2012, respectively. The 4,659 shares of RSUs sold as reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan (the "Plan"), of which certain shares were sold under the Plan in consideration of the tax withholding obligations that arose as a consequence of the vesting and delivery of the RSUs.
The shares were sold at prices ranging from $15.90 to $16.02. The reporting person will provide to the SEC, the issuer or security holder of the issuer, full information regarding the number of shares sold at each separate price.
The sale of these shares was effected pursuant to a Rule 10b5-1 trading plan.
The shares were sold at prices ranging from $16.37 to $16.66. The reporting person will provide to the SEC, the issuer or security holder of the issuer, full information regarding the number of shares sold at each separate price.
The option vests on a monthly basis in equal installments during the 48 month period beginning on July 22, 2010.
The option vests on a monthly basis in equal installments during the 48 month period beginning on January 1, 2009.