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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	Explanation
Common Shares	Acquisiton	2013-03-18	18,205	$0.00	20,241	No	4	M	Direct
Common Shares	Disposition	2013-03-19	6,990	$3.29	13,251	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 Shares	Restricted Stock Units	Disposition	2013-03-18	18,205	$0.00	18,205	$0.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
36,410	2013-03-18		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

These restricted stock units are scheduled to vest in substantially equal installments annually over three years, with the first installment vesting on March 18, 2013.
Each restricted stock unit represents the right to receive, at settlement, one share of common stock. This transaction represents the settlement of vested restricted stock units in shares of common stock.
Shares sold in the open market to satisfy the minimum amount of taxes required to be withhold in connection with the vesting of the shares.