1. Company Directors - S
2. Sear Timothy R G

Insider Trading History of Sear Timothy R G

The following table details the insider trading activities (stock purchases, stock sales, and stock option exercises) by Sear Timothy R G since 2005. The trader's CIK number is 1305432. At the time of the last reporting, Sear Timothy R G was the Director of Oncternal Therapeutics, Inc.. (stock ticker symbol ONCT). Also see all insider trading activities at Oncternal Therapeutics, Inc..

Note that in the past Sear Timothy R G also reported insider trading activities as an insider of the following companies:

Yearly summary of insider trading at Oncternal Therapeutics, Inc. (GTXI) by Sear Timothy R G

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2012	GTXI	50,000	$216,350	0	$0	0	$0
2011	GTXI	30,000	$110,220	0	$0	0	$0
2010	GTXI	70,000	$214,749	175,334	$359,434	0	$0
2009	GTXI	25,000	$259,249	0	$0	0	$0
2008	GTXI	0	$0	0	$0	6,000	$95,940
2007	GTXI	40,000	$566,890	0	$0	9,334	$136,463
2006	GTXI	20,000	$213,829	0	$0	0	$0
2005	GTXI	50,000	$410,465	0	$0	0	$0

Yearly summary of insider trading at Sigma Aldrich Corp (SIAL) by Sear Timothy R G

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2009	SIAL	0	$0	0	$0	30,000	$963,239

Insider trading activities at 2 companies by Sear Timothy R G:

1. Oncternal Therapeutics, Inc. (GTXI)

2. Sigma Aldrich Corp (SIAL)

Table 1. Insider trading of Oncternal Therapeutics, Inc. (GTXI) by Sear Timothy R G

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2012-12-14	GTXI	Buy	50,000	4.33	216,350
2011-08-04	GTXI	Buy	30,000	3.67	110,220
2010-08-17	GTXI	Buy	20,000	3.14	62,880
2010-08-12	GTXI	Buy	20,000	3.04	60,880
2010-08-13	GTXI	Buy	10,000	3.15	31,469
2010-08-11	GTXI	Buy	20,000	2.98	59,520
2010-05-27	GTXI	Sale	175,334	2.05	359,434
2009-01-27	GTXI	Buy	25,000	10.37	259,249
2008-11-10	GTXI	Option Ex	6,000	15.99	95,940
2007-11-21	GTXI	Buy	25,000	14.12	352,950
2007-11-23	GTXI	Buy	5,000	14.39	71,960
2007-11-26	GTXI	Buy	10,000	14.20	141,980
2007-07-27	GTXI	Option Ex	9,334	14.62	136,463
2006-11-10	GTXI	Buy	7,048	12.17	85,788
2006-11-13	GTXI	Buy	2,952	12.25	36,162
2006-09-11	GTXI	Buy	2,155	9.32	20,082
2006-09-08	GTXI	Buy	7,845	9.15	71,797
2005-10-11	GTXI	Buy	40,000	7.80	312,000
2005-05-17	GTXI	Buy	5,000	9.63	48,175
2005-03-14	GTXI	Buy	5,000	10.06	50,290

Table 2. Insider trading of Sigma Aldrich Corp (SIAL) by Sear Timothy R G

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2009-08-20	SIAL	Option Ex	30,000	32.11	963,239

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 Sear Timothy R G (Director of Oncternal Therapeutics, Inc. at the time of this reporting) see the Securities and Exchange Commission (SEC) website.

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