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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
791908	Xoma Corp	XOMA	Pharmaceutical Preparations (2834)	942756657

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1210905	D Paul Rubin	C/O Xoma Corporation 2910 Seventh Street Berkeley CA 94710	Sr. Vp Clinical Dev. & Cmo	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 Shares	Acquisiton	2013-06-18	3,130	$2.36	9,534	No	4	M	Direct
Common Shares	Disposition	2013-06-18	3,130	$0.00	6,404	No	4	S	Direct
Common Shares	Disposition	2013-06-18	2,870	$0.00	3,534	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Shares	Non-Qualified Share Option (right to buy)	Disposition	2013-06-18	3,130	$0.00	3,130	$2.36

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
20,685		2022-05-24	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Shares	4,422	Indirect	by 401(k)

Footnotes

This transaction was made pursuant to Rule 10b5-1 trading plan adopted by the reporting person on 3/20/2013.
These shares were disposed of in multiple transactions at prices ranging from $3.82 to $3.96 for aggregate gross proceeds of $12,190.10, of which $7,386.80 was used to pay the option exercise price.
These shares were disposed of in multiple transactions at prices ranging from $3.88 to $3.95 for aggregate gross proceeds of $11,224.50.
Exercisable with respect to 1/48th of options in monthly increments beginning 6/24/2012 and ending 5/24/2016.