Atara Biotherapeutics, Inc. Insider Trading for October 2014

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

Overview of insider trading in Atara Biotherapeutics, Inc. for October 2014.

Date	Ticker	Company	Owner	Relationship	Transaction	Code	Cost ($)	Shares	Transaction Value ($)	Total Shares	% Holdings
Oct 23 2014	ATRA	Atara Biotherapeut ...	SEIDENBERG BETH C	Director	Option Exercise	C	0.00	18,136	0	0
Oct 23 2014	ATRA	Atara Biotherapeut ...	SEIDENBERG BETH C	Director	Option Exercise	C	0.00	37,179	0	0
Oct 23 2014	ATRA	Atara Biotherapeut ...	SEIDENBERG BETH C	Director	Option Exercise	C	0.00	607,234	0	0
Oct 23 2014	ATRA	Atara Biotherapeut ...	SEIDENBERG BETH C	Director	Option Exercise	C	0.00	1,244,871	0	0
Oct 23 2014	ATRA	Atara Biotherapeut ...	SEIDENBERG BETH C	Director	Buy	C	0.00	55,314	0	77,621	22.3 K to 77.6 K (+247.97 %)
Oct 23 2014	ATRA	Atara Biotherapeut ...	SEIDENBERG BETH C	Director	Buy	C	0.00	1,852,106	0	2,599,029	746.9 K to 2.6 M (+247.96 %)
Oct 23 2014	ATRA	Atara Biotherapeut ...	Kleiner Perkins Caufield & Bye ...	10% Owner	Option Exercise	C	0.00	18,136	0	0
Oct 23 2014	ATRA	Atara Biotherapeut ...	Kleiner Perkins Caufield & Bye ...	10% Owner	Option Exercise	C	0.00	37,179	0	0
Oct 23 2014	ATRA	Atara Biotherapeut ...	Kleiner Perkins Caufield & Bye ...	10% Owner	Option Exercise	C	0.00	607,234	0	0
Oct 23 2014	ATRA	Atara Biotherapeut ...	Kleiner Perkins Caufield & Bye ...	10% Owner	Option Exercise	C	0.00	1,244,871	0	0
Oct 23 2014	ATRA	Atara Biotherapeut ...	Kleiner Perkins Caufield & Bye ...	10% Owner	Buy	C	0.00	55,314	0	77,621	22.3 K to 77.6 K (+247.97 %)
Oct 23 2014	ATRA	Atara Biotherapeut ...	Kleiner Perkins Caufield & Bye ...	10% Owner	Buy	C	0.00	1,852,106	0	2,599,029	746.9 K to 2.6 M (+247.96 %)
Oct 23 2014	ATRA	Atara Biotherapeut ...	Gallagher Carol Giltner	Director	Option Exercise	C	0.00	10,975	0	0
Oct 23 2014	ATRA	Atara Biotherapeut ...	Gallagher Carol Giltner	Director	Option Exercise	C	0.00	22,500	0	0
Oct 23 2014	ATRA	Atara Biotherapeut ...	Gallagher Carol Giltner	Director	Option Exercise	A	0.00	13,076	0	13,076
Oct 23 2014	ATRA	Atara Biotherapeut ...	Gallagher Carol Giltner	Director	Option Exercise	A	0.00	24,776	0	24,776
Oct 23 2014	ATRA	Atara Biotherapeut ...	Gallagher Carol Giltner	Director	Option Exercise	A	0.00	44,871	0	44,871
Oct 23 2014	ATRA	Atara Biotherapeut ...	Gallagher Carol Giltner	Director	Buy	P	11.00	18,181	199,991	51,656	33.5 K to 51.7 K (+54.31 %)
Oct 23 2014	ATRA	Atara Biotherapeut ...	Gallagher Carol Giltner	Director	Buy	C	0.00	33,475	0	33,475	0 to 33.5 K
Oct 23 2014	ATRA	Atara Biotherapeut ...	Fust Matthew K	Director	Option Exercise	A	0.00	25,640	0	25,640
Oct 23 2014	ATRA	Atara Biotherapeut ...	Haqq Christopher	Chief Medical Offic ...	Option Exercise	A	0.00	13,266	0	13,266
Oct 23 2014	ATRA	Atara Biotherapeut ...	MCGRATH JOHN	Chief Financial Off ...	Option Exercise	A	0.00	123,158	0	123,158
Oct 23 2014	ATRA	Atara Biotherapeut ...	MCGRATH JOHN	Chief Financial Off ...	Option Exercise	A	0.00	44,871	0	44,871
Oct 23 2014	ATRA	Atara Biotherapeut ...	Soffer Gad	Chief Operating Off ...	Option Exercise	A	0.00	66,332	0	66,332
Oct 23 2014	ATRA	Atara Biotherapeut ...	Soffer Gad	Chief Operating Off ...	Option Exercise	A	0.00	153,846	0	153,846
Oct 23 2014	ATRA	Atara Biotherapeut ...	Ciechanover Isaac E.	Chief Executive Off ...	Option Exercise	A	0.00	94,523	0	94,523
Oct 23 2014	ATRA	Atara Biotherapeut ...	Clark Mitchall G.	Chief R & QA Office ...	Option Exercise	A	0.00	115,384	0	115,384
Oct 23 2014	ATRA	Atara Biotherapeut ...	MARCUS JOEL S	Director	Option Exercise	C	0.00	501,945	0	0
Oct 23 2014	ATRA	Atara Biotherapeut ...	MARCUS JOEL S	Director	Option Exercise	C	0.00	256,410	0	0
Oct 23 2014	ATRA	Atara Biotherapeut ...	MARCUS JOEL S	Director	Buy	P	11.00	150,000	1,650,000	908,355	758.4 K to 908.4 K (+19.78 %)
Oct 23 2014	ATRA	Atara Biotherapeut ...	MARCUS JOEL S	Director	Buy	C	0.00	501,945	0	758,355	256.4 K to 758.4 K (+195.76 %)
Oct 23 2014	ATRA	Atara Biotherapeut ...	MARCUS JOEL S	Director	Buy	C	0.00	256,410	0	256,410	0 to 256.4 K
Oct 23 2014	ATRA	Atara Biotherapeut ...	DAG Ventures Management V, LLC	10% Owner	Option Exercise	C	0.00	1,519	0	0
Oct 23 2014	ATRA	Atara Biotherapeut ...	DAG Ventures Management V, LLC	10% Owner	Option Exercise	C	0.00	3,115	0	0
Oct 23 2014	ATRA	Atara Biotherapeut ...	DAG Ventures Management V, LLC	10% Owner	Option Exercise	C	0.00	623,863	0	0
Oct 23 2014	ATRA	Atara Biotherapeut ...	DAG Ventures Management V, LLC	10% Owner	Option Exercise	C	0.00	1,278,935	0	0
Oct 23 2014	ATRA	Atara Biotherapeut ...	DAG Ventures Management V, LLC	10% Owner	Buy	C	0.00	4,634	0	4,634	0 to 4.6 K
Oct 23 2014	ATRA	Atara Biotherapeut ...	DAG Ventures Management V, LLC	10% Owner	Buy	C	0.00	1,902,798	0	1,902,798	0 to 1.9 M
Oct 21 2014	ATRA	Atara Biotherapeut ...	DP VIII Associates, L.P.	10% Owner	Option Exercise	C	0.00	4,606	0	0
Oct 21 2014	ATRA	Atara Biotherapeut ...	DP VIII Associates, L.P.	10% Owner	Option Exercise	C	0.00	9,443	0	0
Oct 21 2014	ATRA	Atara Biotherapeut ...	DP VIII Associates, L.P.	10% Owner	Buy	P	11.00	1,841	20,251	15,890	14 K to 15.9 K (+13.10 %)
Oct 21 2014	ATRA	Atara Biotherapeut ...	DP VIII Associates, L.P.	10% Owner	Buy	C	0.00	14,049	0	14,049	0 to 14 K
Oct 21 2014	ATRA	Atara Biotherapeut ...	Domain Partners VIII, L.P.	10% Owner	Option Exercise	C	0.00	620,776	0	0
Oct 21 2014	ATRA	Atara Biotherapeut ...	Domain Partners VIII, L.P.	10% Owner	Option Exercise	C	0.00	1,272,607	0	0
Oct 21 2014	ATRA	Atara Biotherapeut ...	Domain Partners VIII, L.P.	10% Owner	Buy	P	11.00	248,159	2,729,749	2,141,542	1.9 M to 2.1 M (+13.11 %)
Oct 21 2014	ATRA	Atara Biotherapeut ...	Domain Partners VIII, L.P.	10% Owner	Buy	C	0.00	1,893,383	0	1,893,383	0 to 1.9 M
Oct 16 2014	ATRA	Atara Biotherapeut ...	Soffer Gad	Chief Operating Off ...	Option Exercise	M	11.00	40,000	440,000	40,000
Oct 16 2014	ATRA	Atara Biotherapeut ...	MCGRATH JOHN	Chief Financial Off ...	Option Exercise	M	11.00	40,000	440,000	40,000
Oct 16 2014	ATRA	Atara Biotherapeut ...	Haqq Christopher	Chief Medical Offic ...	Option Exercise	M	11.00	50,000	550,000	50,000
Oct 16 2014	ATRA	Atara Biotherapeut ...	Clark Mitchall G.	Chief R & QA Office ...	Option Exercise	M	11.00	15,000	165,000	15,000
Oct 16 2014	ATRA	Atara Biotherapeut ...	Ciechanover Isaac E.	Chief Executive Off ...	Option Exercise	M	11.00	155,000	1,705,000	155,000