X0202 4 2007-05-25 0 0001060736 SEATTLE GENETICS INC /WA SGEN 0001106607 JP MORGAN PARTNERS BHCA LP J.P. MORGAN PARTNERS 270 PARK AVENUE NEW YORK NY 10017 0 0 1 0 0001243235 JPMP MASTER FUND MANAGER L P C/O JPMORGAN PARTNERS LLC 270 PARK AVENUE 39TH FLOOR NEW YORK NY 10017 0 0 1 0 0001330534 JPMP CAPITAL CORP C/O J.P. MORGAN PARTNERS, LLC 270 PARK AVENUE 39TH FLOOR NEW YORK NY 10017 0 0 1 0 0001162622 JP MORGAN PARTNERS GLOBAL INVESTORS LP C/O J.P. MORGAN PARTNEERS, LLC 270 PARK AVENUE, 39TH FLOOR NEW YORK NY 10017 0 0 1 0 0001169890 J P MORGAN PARTNERS GLOBAL INVESTORS CAYMAN LP C/O J P MORGAN PARTNERS 270 PARK AVENUE, 39TH FLOOR NEW YORK NY 10017 0 0 1 0 0001167095 J P MORGAN PARTNERS GLOBAL INVESTORS A LP C/O J.P. MORGAN PARTNERS, LP 270 PARK AVENUE, 39TH FLOOR NEW YORK NY 10017 0 0 1 0 0001169889 J P MORGAN PARTNERS GLOBAL INVESTORS CAYMAN II LP C/O J P MORGAN PARTNERS 270 PARK AVENUE, 39TH FLOOR NEW YORK NY 10017 0 0 1 0 0001317638 JP MORGAN PARTNERS GLOBAL INVESTORS SELLDOWN LLP C/O J.P. MORGAN PARTNERS, LLC 270 PARK AVENUE, 39TH FLOOR NEW YORK NY 10017 0 0 1 0 0001361608 JP MORGAN PARTNERS GLOBAL INVESTORS SELLDOWN II L P C/O J.P. MORGAN PARTNERS, LLC 270 PARK AVENUE, 39TH FLOOR NEW YORK NY 10017 0 0 1 0 0001281161 JPMP GLOBAL INVESTORS L P C/O J.P. MORGAN PARTNERS, LP 270 PARK AVENUE, 39TH FLOOR NEW YORK NY 10017 0 0 1 0 Warrants 6.25 2003-07-08 2011-12-31 Common Stock 469594 469594 D Warrants 6.25 2003-07-08 2011-12-31 Common Stock 101421 101421 I See Footnote Warrants 6.25 2003-07-08 2011-12-31 Common Stock 51478 13826 I See Footnote Warrants 6.25 2003-07-08 2011-12-31 Common Stock 13826 51478 I See Footnote Warrants 6.25 2003-07-08 2011-12-31 Common Stock 5736 5736 I See Footnote Warrants 6.25 2003-07-08 2011-12-31 Common Stock 38114 38114 I See Footnote Warrants 6.25 2003-07-08 2011-12-31 Common Stock 132331 132331 I See Footnote Series A Convertible Preferred Stock 2.50 2004-07-08 Common Stock 226398 226398 D Series A Convertible Preferred Stock 2.50 2004-07-08 Common Stock 55985 55985 I See Footnote Series A Convertible Preferred Stock 2.50 2004-07-08 Common Stock 28416 28416 I See Footnote Series A Convertible Preferred Stock 2.50 2004-07-08 Common Stock 7632 7632 I See Footnote Series A Convertible Preferred Stock 2.50 2004-07-08 Common Stock 3166 3166 I See Footnote Series A Convertible Preferred Stock 2.50 2004-07-08 Common Stock 21039 21039 I See Footnote Series A Convertible Preferred Stock 2.50 2004-07-08 Common Stock 105864 105864 I See Footnote Stock Options (Right to Purchase) 7.26 2005-05-16 2014-05-16 Common Stock 10000 10000 I See Footnote Stock Options (Right to Purchase) 5.11 2006-05-12 2015-05-12 Common Stock 10000 10000 I See Footnote Stock Options (Right to Purchase) 10.20 2007-05-25 4 A 0 10000 A 2008-05-24 2017-05-25 Common Stock 10000 10000 I See Footnote The amount shown represents the beneficial ownership of the Issuer's equity securities by J.P. Morgan Partners Global Investors, L.P. The Reporting Person has no pecuniary interest in such securities. The amount shown represents the beneficial ownership of the Issuer's equity securities by J.P. Morgan Partners Global Investors (Cayman), L.P. The Reporting Person has no pecuniary interest in such securities. The amount shown represents the beneficial ownership of the Issuer's equity securities by J.P. Morgan Partners Global Investors A, L.P. The Reporting Person has no pecuniary interest in such securities. The amount shown represents the beneficial ownership of the Issuer's equity securities by J.P. Morgan Partners Global Investors (Cayman) II, L.P. The Reporting Person has no pecuniary interest in such securities. The amount shown represents the beneficial ownership of the Issuer's equity securities by J.P. Morgan Partners Global Investors (Selldown), L.P. The Reporting Person has no pecuniary interest in such securities. The amount shown represents the beneficial ownership of the Issuer's equity securities by J.P. Morgan Partners Global Investors (Selldown II), L.P. The Reporting Person purchased these shares on the open market on April 6, 2006 The Reporting Person has no pecuniary interest in such securities. The conversion price of the Series A Convertible Preferred Stock is equal to the initial purchase price divided by $2.50, as adjusted for stock splits, stock dividends, combinations and other similar capitalizations of the Issuer's Common and Preferred Stock. Initially this results in a 1 for 10 conversion ratio. Each share of Series A Convertible Preferred Stock is entitled to 0.93 votes for each share of Common Stock into which such share of Convertible Preferred Stock could then be converted. All outstanding shares of the Issuer's Series A Convertible Preferred Stock are convertible at the holder's option into shares of the Issuer's Common Stock on a 10 to 1 basis any time after July 8, 2004. This right to convert does not expire. These options were granted to Srinivas Akkaraju, a director of the Issuer. Mr. Akkaraju is obligated to transfer any shares issued under the Stock Option to J.P. Morgan Partners (BHCA), L.P. ("JPM BHCA") at the request of JPM BHCA. N/A J.P. Morgan Partners (BHCA) L.P. By: JPMP Master Fund Manager, L.P. By: JPMP Capital Corp. its general partner By: /s/ John C. Wilmont, Managing Directo 2007-05-30