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General | Insiders | Insider Transactions | Monthly Overview | Weekly Overview

Overview of all insider trading transactions in KOSAN BIOSCIENCES INC. Get notifications about new insider transactions in KOSAN BIOSCIENCES INC for free.

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Date	Ticker	Company	Owner	Relationship	Transaction	Code	Cost ($)	Shares	Transaction Value ($)	Total Shares	% Holdings
Jan 04 2007	KOSN	KOSAN BIOSCIENCES ...	JOHNSON ROBERT G JR MD PHD	President and CEO	Option Exercise	A	5.55	100,000	555,000	100,000
Jan 04 2007	KOSN	KOSAN BIOSCIENCES ...	Horn Margaret A	SVP, General Counse ...	Option Exercise	A	5.55	45,000	249,750	45,000
Jan 04 2007	KOSN	KOSAN BIOSCIENCES ...	Titus Gary	Sr. VP and CFO	Option Exercise	A	5.55	15,000	83,250	15,000
Jan 04 2007	KOSN	KOSAN BIOSCIENCES ...	Licari Peter	SVP Manufacturing & ...	Option Exercise	A	5.55	37,500	208,125	37,500
Jan 04 2007	KOSN	KOSAN BIOSCIENCES ...	Timmermans Pieter B	SVP Drug Disc & Pre ...	Option Exercise	A	5.55	37,500	208,125	37,500
Nov 08 2006	KOSN	KOSAN BIOSCIENCES ...	De Jager Robert	SVP, Chief Medical ...	Option Exercise	A	4.28	150,000	642,000	150,000
Nov 02 2006	KOSN	KOSAN BIOSCIENCES ...	Titus Gary	Sr. VP and CFO	Buy	P	4.00	5,100	20,384	10,035	4.9 K to 10 K (+103.34 %)
Nov 02 2006	KOSN	KOSAN BIOSCIENCES ...	Titus Gary	Sr. VP and CFO	Buy	P	3.99	4,900	19,551	4,935	35 to 4.9 K (+14,000.00 %)
Sep 06 2006	KOSN	KOSAN BIOSCIENCES ...	Titus Gary	Sr. VP and CFO	Option Exercise	A	3.19	150,000	478,500	150,000
Sep 06 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.03	1,000,000	3,030,000	2,164,642	3.2 M to 2.2 M (-31.60 %)
Aug 24 2006	KOSN	KOSAN BIOSCIENCES ...	Licari Peter	SVP Manufacturing & ...	Option Exercise	A	3.10	25,000	77,500	25,000
Aug 08 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.73	120	448	3,189,642	3.2 M to 3.2 M (0.00 %)
Aug 08 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.71	16	59	3,189,762	3.2 M to 3.2 M (0.00 %)
Aug 08 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.67	100	367	3,189,778	3.2 M to 3.2 M (0.00 %)
Aug 08 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.62	100	362	3,189,878	3.2 M to 3.2 M (0.00 %)
Aug 08 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.61	400	1,444	3,189,978	3.2 M to 3.2 M (-0.01 %)
Aug 08 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.59	300	1,077	3,190,378	3.2 M to 3.2 M (-0.01 %)
Aug 08 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.58	300	1,074	3,190,678	3.2 M to 3.2 M (-0.01 %)
Aug 08 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.57	600	2,142	3,190,978	3.2 M to 3.2 M (-0.02 %)
Aug 08 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.56	300	1,068	3,191,578	3.2 M to 3.2 M (-0.01 %)
Aug 08 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.55	300	1,065	3,191,878	3.2 M to 3.2 M (-0.01 %)
Aug 08 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.54	600	2,124	3,192,178	3.2 M to 3.2 M (-0.02 %)
Aug 08 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.53	1,800	6,354	3,192,778	3.2 M to 3.2 M (-0.06 %)
Aug 08 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.52	1,500	5,280	3,194,578	3.2 M to 3.2 M (-0.05 %)
Aug 08 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.51	1,100	3,861	3,196,078	3.2 M to 3.2 M (-0.03 %)
Aug 08 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.50	15,000	52,500	3,197,178	3.2 M to 3.2 M (-0.47 %)
Aug 17 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.00	2,891	8,673	3,164,642	3.2 M to 3.2 M (-0.09 %)
Aug 17 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.07	100	307	3,167,533	3.2 M to 3.2 M (0.00 %)
Aug 17 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.06	400	1,224	3,167,633	3.2 M to 3.2 M (-0.01 %)
Aug 17 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.05	2,810	8,571	3,168,033	3.2 M to 3.2 M (-0.09 %)
Aug 17 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.03	100	303	3,170,843	3.2 M to 3.2 M (0.00 %)
Aug 17 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.01	200	602	3,170,943	3.2 M to 3.2 M (-0.01 %)
Aug 17 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.00	1,590	4,770	3,171,143	3.2 M to 3.2 M (-0.05 %)
Aug 15 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.00	203	609	3,172,733	3.2 M to 3.2 M (-0.01 %)
Aug 15 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.00	16,706	50,118	3,172,936	3.2 M to 3.2 M (-0.52 %)
Aug 02 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.50	32	112	3,212,178	3.2 M to 3.2 M (0.00 %)
Aug 02 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.51	100	351	3,212,210	3.2 M to 3.2 M (0.00 %)
Aug 02 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.50	5,832	20,412	3,212,310	3.2 M to 3.2 M (-0.18 %)
Aug 02 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	3.50	5,000	17,500	3,218,142	3.2 M to 3.2 M (-0.16 %)
Jul 24 2006	KOSN	KOSAN BIOSCIENCES ...	DAVIS PETER PHD	Director	Option Exercise	A	3.90	2,500	9,750	2,500
May 31 2006	KOSN	KOSAN BIOSCIENCES ...	DELEAGE JEAN	Director	Option Exercise	A	4.65	8,000	37,200	8,000
May 31 2006	KOSN	KOSAN BIOSCIENCES ...	CHABNER BRUCE A MD	Director	Option Exercise	A	4.65	6,000	27,900	6,000
May 31 2006	KOSN	KOSAN BIOSCIENCES ...	DAVIS PETER PHD	Director	Option Exercise	A	4.65	8,000	37,200	8,000
May 31 2006	KOSN	KOSAN BIOSCIENCES ...	HOMCY CHARLES J	Director	Option Exercise	A	4.65	6,000	27,900	6,000
May 31 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Option Exercise	A	4.65	5,000	23,250	5,000
May 31 2006	KOSN	KOSAN BIOSCIENCES ...	WALSH CHRISTOPHER T PHD	Director	Option Exercise	A	4.65	8,000	37,200	8,000
May 31 2006	KOSN	KOSAN BIOSCIENCES ...	Clemens Kevan	Director	Option Exercise	A	4.65	2,000	9,300	2,000
May 31 2006	KOSN	KOSAN BIOSCIENCES ...	Clemens Kevan	Director	Option Exercise	A	4.33	20,000	86,600	20,000
May 09 2006	KOSN	KOSAN BIOSCIENCES ...	DELEAGE JEAN	Director	Buy	P	1,500,000.00	300,000	450,000,000,000	1,594,598	1.3 M to 1.6 M (+23.17 %)
May 09 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.00	300,000	1,500,000	3,223,142	3.5 M to 3.2 M (-8.52 %)
May 04 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.00	240	1,200	3,523,142	3.5 M to 3.5 M (-0.01 %)
May 04 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.01	34,485	172,770	3,523,382	3.6 M to 3.5 M (-0.97 %)
May 04 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.00	26,826	134,130	3,557,867	3.6 M to 3.6 M (-0.75 %)
May 01 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.00	12,941	64,705	3,584,693	3.6 M to 3.6 M (-0.36 %)
May 01 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.00	14,935	74,675	3,597,634	3.6 M to 3.6 M (-0.41 %)
Apr 26 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.00	1,300	6,500	3,612,569	3.6 M to 3.6 M (-0.04 %)
Apr 26 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.00	8,773	43,865	3,613,869	3.6 M to 3.6 M (-0.24 %)
Apr 26 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.00	500	2,500	3,622,642	3.6 M to 3.6 M (-0.01 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.45	2,800	15,250	3,623,142	3.6 M to 3.6 M (-0.08 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.45	2,900	15,791	3,625,942	3.6 M to 3.6 M (-0.08 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.42	2,819	15,272	3,628,842	3.6 M to 3.6 M (-0.08 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.41	2,900	15,691	3,631,661	3.6 M to 3.6 M (-0.08 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.40	2,800	15,118	3,634,561	3.6 M to 3.6 M (-0.08 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.40	3,060	16,519	3,637,361	3.6 M to 3.6 M (-0.08 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.39	3,185	17,174	3,640,421	3.6 M to 3.6 M (-0.09 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.39	2,820	15,198	3,643,606	3.6 M to 3.6 M (-0.08 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.38	705	3,790	3,646,426	3.6 M to 3.6 M (-0.02 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.37	3,616	19,421	3,647,131	3.7 M to 3.6 M (-0.10 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.37	200	1,074	3,650,747	3.7 M to 3.7 M (-0.01 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.36	195	1,045	3,650,947	3.7 M to 3.7 M (-0.01 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.82	119	693	3,651,142	3.7 M to 3.7 M (0.00 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.81	700	4,067	3,651,261	3.7 M to 3.7 M (-0.02 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.80	1,336	7,749	3,651,961	3.7 M to 3.7 M (-0.04 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.79	119	689	3,653,297	3.7 M to 3.7 M (0.00 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.77	600	3,462	3,653,416	3.7 M to 3.7 M (-0.02 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.75	7,305	42,004	3,654,016	3.7 M to 3.7 M (-0.20 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.60	270	1,512	3,661,321	3.7 M to 3.7 M (-0.01 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.57	500	2,785	3,661,591	3.7 M to 3.7 M (-0.01 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.56	400	2,224	3,662,091	3.7 M to 3.7 M (-0.01 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.54	581	3,219	3,662,491	3.7 M to 3.7 M (-0.02 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.53	400	2,212	3,663,072	3.7 M to 3.7 M (-0.01 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.52	100	552	3,663,472	3.7 M to 3.7 M (0.00 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.51	500	2,755	3,663,572	3.7 M to 3.7 M (-0.01 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.50	900	4,950	3,664,072	3.7 M to 3.7 M (-0.02 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.45	1,405	7,657	3,664,972	3.7 M to 3.7 M (-0.04 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.44	63	343	3,666,377	3.7 M to 3.7 M (0.00 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.42	1,700	9,214	3,666,440	3.7 M to 3.7 M (-0.05 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.41	876	4,739	3,668,140	3.7 M to 3.7 M (-0.02 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.40	2,228	12,031	3,669,016	3.7 M to 3.7 M (-0.06 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.39	645	3,477	3,671,244	3.7 M to 3.7 M (-0.02 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	10% Owner	Sell	S	5.38	1,253	6,741	3,671,889	3.7 M to 3.7 M (-0.03 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.45	100	545	1,450,141	1.5 M to 1.5 M (-0.01 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.44	100	544	1,450,241	1.5 M to 1.5 M (-0.01 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.43	300	1,629	1,450,341	1.5 M to 1.5 M (-0.02 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.42	233	1,263	1,450,641	1.5 M to 1.5 M (-0.02 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.41	300	1,623	1,450,874	1.5 M to 1.5 M (-0.02 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.40	200	1,080	1,451,174	1.5 M to 1.5 M (-0.01 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.39	700	3,773	1,451,374	1.5 M to 1.5 M (-0.05 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.38	967	5,202	1,452,074	1.5 M to 1.5 M (-0.07 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.37	200	1,074	1,453,041	1.5 M to 1.5 M (-0.01 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.36	100	536	1,453,241	1.5 M to 1.5 M (-0.01 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.71	2,800	15,986	1,453,341	1.5 M to 1.5 M (-0.19 %)
Apr 19 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.72	400	2,288	1,456,141	1.5 M to 1.5 M (-0.03 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	6.03	100	603	1,456,541	1.5 M to 1.5 M (-0.01 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	6.02	100	602	1,456,641	1.5 M to 1.5 M (-0.01 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.97	200	1,194	1,456,741	1.5 M to 1.5 M (-0.01 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.96	200	1,192	1,456,941	1.5 M to 1.5 M (-0.01 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.95	100	595	1,457,141	1.5 M to 1.5 M (-0.01 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.94	200	1,188	1,457,241	1.5 M to 1.5 M (-0.01 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.93	300	1,779	1,457,441	1.5 M to 1.5 M (-0.02 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.93	200	1,185	1,457,741	1.5 M to 1.5 M (-0.01 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.92	500	2,960	1,457,941	1.5 M to 1.5 M (-0.03 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.91	200	1,182	1,458,441	1.5 M to 1.5 M (-0.01 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.90	100	590	1,458,641	1.5 M to 1.5 M (-0.01 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.90	400	2,358	1,458,741	1.5 M to 1.5 M (-0.03 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.88	200	1,176	1,459,141	1.5 M to 1.5 M (-0.01 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.87	200	1,174	1,459,341	1.5 M to 1.5 M (-0.01 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.84	200	1,168	1,459,541	1.5 M to 1.5 M (-0.01 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.98	38	227	1,459,741	1.5 M to 1.5 M (0.00 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.96	200	1,191	1,459,779	1.5 M to 1.5 M (-0.01 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.95	962	5,724	1,459,979	1.5 M to 1.5 M (-0.07 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.94	200	1,188	1,460,941	1.5 M to 1.5 M (-0.01 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.93	223	1,322	1,461,141	1.5 M to 1.5 M (-0.02 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.92	577	3,416	1,461,364	1.5 M to 1.5 M (-0.04 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.91	200	1,182	1,461,941	1.5 M to 1.5 M (-0.01 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.90	500	2,950	1,462,141	1.5 M to 1.5 M (-0.03 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.88	200	1,176	1,462,641	1.5 M to 1.5 M (-0.01 %)
Mar 16 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.87	100	587	1,462,841	1.5 M to 1.5 M (-0.01 %)
Feb 22 2006	KOSN	KOSAN BIOSCIENCES ...	Timmermans Pieter B	SVP Drug Disc & Pre ...	Option Exercise	A	4.66	20,000	93,200	20,000
Feb 22 2006	KOSN	KOSAN BIOSCIENCES ...	Licari Peter	SVP Manufacturing & ...	Option Exercise	A	4.66	15,000	69,900	15,000
Feb 16 2006	KOSN	KOSAN BIOSCIENCES ...	JOHNSON ROBERT G JR MD PHD	CEO	Option Exercise	A	4.88	25,000	121,875	25,000
Feb 10 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.00	792	3,964	1,462,941	1.5 M to 1.5 M (-0.05 %)
Feb 10 2006	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Sell	S	5.00	3,200	16,000	1,463,733	1.5 M to 1.5 M (-0.22 %)
Jan 05 2006	KOSN	KOSAN BIOSCIENCES ...	Horn Margaret A	SVP, General Counse ...	Option Exercise	A	4.46	20,000	89,200	20,000
Jan 03 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	Chairman and CEO	Gift	G	0.00	1,000	0	4,000	3 K to 4 K (+33.33 %)
Jan 03 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	Chairman and CEO	Gift	G	0.00	9,500	0	3,673,142	3.7 M to 3.7 M (-0.26 %)
Jan 03 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	Chairman and CEO	Buy	P	4.48	7,300	32,704	3,682,642	3.7 M to 3.7 M (+0.20 %)
Jan 03 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	Chairman and CEO	Buy	P	4.49	6,600	29,634	3,675,342	3.7 M to 3.7 M (+0.18 %)
Jan 03 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	Chairman and CEO	Buy	P	4.48	3,800	17,036	3,668,742	3.7 M to 3.7 M (+0.10 %)
Jan 03 2006	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	Chairman and CEO	Buy	P	4.50	2,300	10,348	3,664,942	3.7 M to 3.7 M (+0.06 %)
Dec 06 2005	KOSN	KOSAN BIOSCIENCES ...	Horn Margaret A	SVP, General Counse ...	Option Exercise	A	7.21	150,000	1,081,500	150,000
Dec 06 2005	KOSN	KOSAN BIOSCIENCES ...	SANTI DANIEL V MD PHD	Chairman and CEO	Option Exercise	A	7.93	78,750	624,488	78,750
Dec 06 2005	KOSN	KOSAN BIOSCIENCES ...	JOHNSON ROBERT G JR MD PHD	EVP, Development an ...	Option Exercise	A	7.21	52,500	378,525	52,500
Dec 06 2005	KOSN	KOSAN BIOSCIENCES ...	KANAYA SUSAN M	Sr. VP Finance and ...	Option Exercise	A	7.21	37,500	270,375	37,500
May 27 2005	KOSN	KOSAN BIOSCIENCES ...	CHABNER BRUCE A MD	Director	Option Exercise	A	4.55	6,000	27,300	6,000
May 27 2005	KOSN	KOSAN BIOSCIENCES ...	DAVIS PETER PHD	Director	Option Exercise	A	4.55	9,000	40,950	9,000
May 27 2005	KOSN	KOSAN BIOSCIENCES ...	DELEAGE JEAN	Director	Option Exercise	A	4.55	9,000	40,950	9,000
May 27 2005	KOSN	KOSAN BIOSCIENCES ...	HOMCY CHARLES J	Director	Option Exercise	A	4.55	6,000	27,300	6,000
May 27 2005	KOSN	KOSAN BIOSCIENCES ...	KHOSLA CHAITAN PHD	Director	Option Exercise	A	4.55	5,000	22,750	5,000
May 27 2005	KOSN	KOSAN BIOSCIENCES ...	WALSH CHRISTOPHER T PHD	Director	Option Exercise	A	4.55	8,000	36,400	8,000

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