Stock Trading History of Leff Jonathan S

The following table details the trading activities (stock purchases, stock sales, and stock option exercises) reported to the Securities and Exchange Commission (SEC) by insider Leff Jonathan S since year 2005. The trader's CIK number is 1215242. At the time of this reporting, Leff Jonathan S is the Director of Allos Therapeutics Inc . (stock ticker symbol ALTH). See this page for all insider trading activities at Allos Therapeutics Inc .
Note that in the past LEFF JONATHAN S also reported insider trading activities as an insider of the following companies:

Insider Activities at Allos Therapeutics Inc (ALTH)
Insider Activities at Zymogenetics Inc (ZGEN)
Insider Activities at Sunesis Pharmaceuticals Inc (SNSS)
Insider Activities at Intermune Inc (ITMN)

Stock purchases, sales, and option exercises reported by insider *Leff Jonathan S* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-05-29	ALTH	Allos Therapeutics Inc	Purchase	3,500,000	5.64	19,740,000
2008-03-07	ZGEN	Zymogenetics Inc	Purchase	56,722	8.66	490,928
2008-03-05	ZGEN	Zymogenetics Inc	Purchase	98,254	9.32	915,923
2008-03-03	ZGEN	Zymogenetics Inc	Purchase	139,536	9.64	1,344,522
2008-02-28	ZGEN	Zymogenetics Inc	Purchase	10,142	9.95	100,953
2008-02-29	ZGEN	Zymogenetics Inc	Purchase	93,009	10.03	932,813
2008-02-25	ZGEN	Zymogenetics Inc	Purchase	145,000	9.60	1,391,301
2008-02-26	ZGEN	Zymogenetics Inc	Purchase	1,900	9.48	18,012
2008-02-21	ZGEN	Zymogenetics Inc	Purchase	96,570	9.17	885,096
2007-09-13	ZGEN	Zymogenetics Inc	Purchase	73,972	11.72	867,124
2007-09-12	ZGEN	Zymogenetics Inc	Purchase	60,483	11.43	691,502
2007-09-11	ZGEN	Zymogenetics Inc	Purchase	163,300	11.70	1,909,875
2007-05-30	SNSS	Sunesis Pharmaceuticals Inc	Purchase	677,200	4.43	2,999,996
2006-03-17	SNSS	Sunesis Pharmaceuticals Inc	Purchase	805,153	6.21	5,000,000
2005-03-09	ITMN	Intermune Inc	Purchase	70,900	11.28	799,468

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Leff Jonathan S (Director of Allos Therapeutics Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.