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Filing Details

Accession Number:: 0001144204-13-047345
Form Type:: 4/A
Zero Holdings:: No
Publication Time:: 2013-08-21 19:54:39
Reporting Period:: 2013-08-19

Filing Date:: 2013-08-21
Accepted Time:: 2013-08-21 19:54:39
Original Submission Date:: 2013-08-21
SEC Url:: Form 4 Filing

Issuer

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

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1087939	Julian Baker	667 Madison Avenue, 21St Floor New York NY US 10065	Yes	No	Yes	No
1087940	Felix Baker	667 Madison Avenue, 21St Floor New York NY US 10065	Yes	No	Yes	No
1263508	Baker Bros. Advisors Lp	667 Madison Avenue, 21St Floor New York NY US 10065	Yes	No	Yes	No
1363364	Baker Brothers Life Sciences Lp	667 Madison Avenue, 21St Floor New York NY US 10065	Yes	No	Yes	No
1551138	14159, L.p.	667 Madision Avenue, 21St Floor New York NY US 10065	Yes	No	Yes	No
1551139	667, L.p.	667 Madison Avenue 21St Floor New York NY US 10065	Yes	No	Yes	No
1580575	Baker Bros. Advisors (Gp) Llc	667 Madision Avenue 21St Floor New York NY US 10065	Yes	No	Yes	No

Reported Non-Derivative Transactions

Show Other Fields >>

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2013-08-19	882,323	$3.62	2,829,753	No	4	P	Indirect	See footnote
Common Stock	Acquisiton	2013-08-19	1,854,058	$3.62	19,767,770	No	4	P	Indirect	See footnote
Common Stock	Acquisiton	2013-08-19	21,410	$3.62	510,449	No	4	P	Indirect	See footnote

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	See footnote
No	4	P	Indirect	See footnote
No	4	P	Indirect	See footnote

Footnotes

As a result of their ownership interest in Baker Biotech Capital (GP), LLC, Felix J. Baker and Julian C. Baker may be deemed to have an indirect pecuniary interest in 2,829,753 shares of Common Stock of the Issuer beneficially owned by 667, L.P., a limited partnership of which the sole general partner is Baker Biotech Capital, L.P., a limited partnership of which the sole general partner is Baker Biotech Capital (GP), LLC, due to Baker Biotech Capital, L.P.'s right to receive an allocation of a portion of the profits from 667, L.P.
As a result of their ownership interest in Baker Brothers Life Sciences Capital (GP), LLC, Felix J. Baker and Julian C. Baker may be deemed to have an indirect pecuniary interest in 19,767,770 shares of Common Stock of the Issuer beneficially owned by Baker Brothers Life Sciences, L.P., a limited partnership of which the sole general partner is Baker Brothers Life Sciences Capital, L.P., a limited partnership of which the sole general partner is Baker Brothers Life Sciences Capital (GP), LLC, due to Baker Brothers Life Sciences Capital, L.P.'s right to receive an allocation of a portion of the profits from Baker Brothers Life Sciences, L.P.
As a result of their ownership interest in 14159 Capital (GP), LLC, Felix J. Baker and Julian C. Baker may be deemed to have an indirect pecuniary interest in 510,449 shares of Common Stock of the Issuer beneficially owned by 14159, L.P., a limited partnership of which the sole general partner is 14159 Capital L.P., a limited partnership of which the sole general partner is 14159 Capital (GP), LLC, due to 14159 Capital L.P.'s right to receive an allocation of a portion of the profits from 14159, L.P.
The aggregate indirect beneficial ownership reported on this form is 23,107,972 shares.
Baker Bros. Advisors LP (the "Adviser") serves as the Investment Adviser to 667, L.P., Baker Brothers Life Sciences, L.P. and 14159, L.P. (the "Funds"). In connection with the services provided by the Adviser, the Adviser receives an asset-based management fee that does not confer any pecuniary interest in the securities held by the Funds. Baker Bros. Advisors (GP) LLC (the Adviser GP") is the Adviser's sole general partner. Julian C. Baker and Felix J. Baker are principals of the Adviser GP. The Adviser has complete and unlimited discretion and authority with respect to the investment and voting power of the securities held by the Funds. The general partners of the Funds relinquished to the Adviser all discretion and authority with respect to the investment and voting power of the securities held by the Funds. Julian C. Baker, Felix J. Baker, the Adviser GP and the Adviser disclaim beneficial ownership of the securities held directly by the Funds except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that any of Julian C. Baker, Felix J. Baker, the Adviser GP or the Adviser is a beneficial owner of such securities for purposes of Section 16 or any other purpose.