Insider Trading History of Ciechanover Isaac E.

The following table details the insider trading activities (stock purchases, stock sales, and stock option exercises) by Ciechanover Isaac E. since 2015. The trader's CIK number is 1612096. At the time of the last reporting, Ciechanover Isaac E. was the Chief Executive Officer of Atara Biotherapeutics, Inc.. (stock ticker symbol ATRA). Also see all insider trading activities at Atara Biotherapeutics, Inc..

Yearly summary of insider trading at Atara Biotherapeutics, Inc. (ATRA) by Ciechanover Isaac E.

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2019	ATRA	0	$0	76,050	$2,618,207	0	$0
2018	ATRA	0	$0	390,300	$14,616,929	3,938	$0
2017	ATRA	0	$0	142,000	$2,350,708	23,631	$0
2016	ATRA	0	$0	130,900	$2,612,755	23,631	$0
2015	ATRA	0	$0	70,400	$3,166,872	43,323	$0

Insider trading of Atara Biotherapeutics, Inc. (ATRA) by Ciechanover Isaac E.

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2019-05-30	ATRA	Sale	2,925	23.21	67,889
2019-05-29	ATRA	Sale	2,925	23.07	67,494
2019-05-13	ATRA	Sale	3,900	24.59	95,901
2019-05-14	ATRA	Sale	3,900	24.92	97,188
2019-04-25	ATRA	Sale	3,900	33.78	131,742
2019-04-26	ATRA	Sale	3,900	33.47	130,533
2019-04-10	ATRA	Sale	3,900	37.04	144,456
2019-04-11	ATRA	Sale	3,900	36.27	141,453
2019-03-28	ATRA	Sale	3,900	37.79	147,369
2019-03-29	ATRA	Sale	3,900	40.76	158,944
2019-03-14	ATRA	Sale	3,900	39.79	155,181
2019-03-15	ATRA	Sale	3,900	38.73	151,047
2019-02-27	ATRA	Sale	3,900	35.71	139,269
2019-02-28	ATRA	Sale	3,900	36.13	140,907
2019-02-12	ATRA	Sale	3,900	39.01	152,139
2019-02-11	ATRA	Sale	3,900	38.52	150,228
2019-01-23	ATRA	Sale	3,900	35.67	139,113
2019-01-24	ATRA	Sale	3,900	35.40	138,060
2019-01-09	ATRA	Sale	3,900	34.84	135,856
2019-01-10	ATRA	Sale	3,900	34.22	133,438
2018-12-27	ATRA	Sale	3,900	33.51	130,669
2018-12-28	ATRA	Sale	3,900	35.00	136,500
2018-12-13	ATRA	Sale	3,900	42.75	166,725
2018-12-12	ATRA	Sale	3,900	42.56	165,984
2018-11-28	ATRA	Sale	3,900	39.09	152,470
2018-11-29	ATRA	Sale	3,900	41.70	162,610
2018-11-14	ATRA	Sale	3,900	34.20	133,380
2018-11-15	ATRA	Sale	3,900	35.08	136,812
2018-10-22	ATRA	Sale	3,900	33.96	132,444
2018-10-23	ATRA	Sale	3,900	34.25	133,563
2018-10-05	ATRA	Sale	3,900	40.28	157,080
2018-10-04	ATRA	Sale	3,900	40.72	158,788
2018-09-18	ATRA	Sale	3,900	39.62	154,518
2018-09-19	ATRA	Sale	3,900	39.99	155,961
2018-09-06	ATRA	Sale	3,900	38.94	151,846
2018-09-07	ATRA	Sale	3,900	39.98	155,941
2018-08-20	ATRA	Sale	3,900	36.04	140,556
2018-08-21	ATRA	Sale	3,900	36.69	143,091
2018-08-06	ATRA	Sale	3,900	37.48	146,172
2018-08-07	ATRA	Sale	3,900	37.55	146,445
2018-07-27	ATRA	Sale	3,900	37.04	144,456
2018-07-26	ATRA	Sale	3,900	39.23	153,016
2018-07-10	ATRA	Sale	28,400	40.23	1,142,674
2018-07-09	ATRA	Sale	30,000	40.26	1,207,650
2018-06-26	ATRA	Sale	4,400	40.40	177,760
2018-06-27	ATRA	Sale	2,000	38.48	76,970
2018-06-05	ATRA	Sale	4,400	49.89	219,516
2018-06-06	ATRA	Sale	4,400	47.60	209,453
2018-05-22	ATRA	Sale	4,400	50.88	223,872
2018-05-21	ATRA	Sale	4,400	52.71	231,937
2018-05-09	ATRA	Sale	4,400	38.92	171,270
2018-05-10	ATRA	Sale	4,400	40.53	178,332
2018-04-11	ATRA	Sale	4,400	41.07	180,708
2018-04-12	ATRA	Sale	4,400	43.16	189,903
2018-03-27	ATRA	Sale	4,400	37.57	165,308
2018-03-26	ATRA	Sale	4,400	40.42	177,848
2018-03-15	ATRA	Sale	4,400	42.41	186,603
2018-03-16	ATRA	Sale	4,400	42.17	185,548
2018-03-12	ATRA	Sale	1,000	46.41	46,410
2018-02-22	ATRA	Sale	4,600	43.92	202,045
2018-02-21	ATRA	Sale	4,500	44.08	198,337
2018-02-20	ATRA	Sale	8,700	45.28	393,936
2018-02-15	ATRA	Option Ex	3,938	.00	0
2018-02-15	ATRA	Sale	10,000	47.02	470,250
2018-02-16	ATRA	Sale	10,000	47.08	470,820
2018-02-14	ATRA	Sale	10,000	47.41	474,150
2018-02-13	ATRA	Sale	10,000	45.10	451,000
2018-02-08	ATRA	Sale	4,400	37.15	163,460
2018-02-09	ATRA	Sale	4,400	39.04	171,767
2018-01-25	ATRA	Sale	10,000	34.04	340,430
2018-01-26	ATRA	Sale	9,300	36.33	337,841
2018-01-24	ATRA	Sale	14,400	34.20	492,436
2018-01-23	ATRA	Sale	24,100	35.22	848,729
2018-01-22	ATRA	Sale	10,000	32.55	325,550
2018-01-16	ATRA	Sale	600	30.38	18,228
2018-01-10	ATRA	Sale	8,600	20.01	172,086
2018-01-11	ATRA	Sale	20,000	21.75	435,000
2018-01-12	ATRA	Sale	100	30.05	3,005
2017-12-29	ATRA	Sale	20,000	19.19	383,740
2017-12-28	ATRA	Sale	2,200	15.15	33,330
2017-12-12	ATRA	Sale	2,200	14.56	32,032
2017-12-13	ATRA	Sale	2,200	14.73	32,406
2017-11-29	ATRA	Sale	2,200	14.09	30,998
2017-11-30	ATRA	Sale	2,200	14.40	31,680
2017-11-15	ATRA	Option Ex	5,908	.00	0
2017-11-14	ATRA	Sale	2,200	13.41	29,502
2017-11-13	ATRA	Sale	2,200	13.53	29,766
2017-10-26	ATRA	Sale	2,200	13.57	29,854
2017-10-27	ATRA	Sale	2,200	13.60	29,920
2017-10-11	ATRA	Sale	2,200	15.25	33,550
2017-10-12	ATRA	Sale	2,200	14.78	32,516
2017-09-20	ATRA	Sale	2,200	15.56	34,232
2017-09-19	ATRA	Sale	2,200	15.51	34,122
2017-09-06	ATRA	Sale	2,200	15.05	33,110
2017-09-07	ATRA	Sale	2,200	14.98	32,956
2017-08-22	ATRA	Sale	2,200	13.56	29,832
2017-08-23	ATRA	Sale	2,200	13.51	29,722
2017-08-15	ATRA	Option Ex	5,908	.00	0
2017-08-10	ATRA	Sale	2,200	14.75	32,450
2017-08-11	ATRA	Sale	2,200	14.58	32,076
2017-07-24	ATRA	Sale	2,800	17.11	47,894
2017-07-25	ATRA	Sale	2,700	16.38	44,226
2017-05-30	ATRA	Sale	3,450	13.44	46,368
2017-05-31	ATRA	Sale	3,450	13.26	45,747
2017-05-17	ATRA	Sale	2,400	14.88	35,712
2017-05-18	ATRA	Sale	2,400	14.94	35,856
2017-05-15	ATRA	Option Ex	5,908	.00	0
2017-04-26	ATRA	Sale	3,600	17.78	64,008
2017-04-25	ATRA	Sale	3,600	17.39	62,586
2017-04-10	ATRA	Sale	3,000	17.08	51,239
2017-04-11	ATRA	Sale	4,200	16.99	71,358
2017-03-27	ATRA	Sale	12,400	20.34	252,216
2017-03-28	ATRA	Sale	3,600	19.43	69,930
2017-03-16	ATRA	Sale	10,800	18.54	200,232
2017-03-17	ATRA	Sale	20,000	19.25	385,100
2017-02-15	ATRA	Option Ex	5,907	.00	0
2017-02-15	ATRA	Sale	2,400	15.54	37,296
2017-02-16	ATRA	Sale	2,400	15.57	37,368
2017-02-02	ATRA	Sale	2,400	13.45	32,280
2017-02-03	ATRA	Sale	2,400	13.87	33,288
2017-01-17	ATRA	Sale	3,600	14.08	50,688
2017-01-18	ATRA	Sale	2,400	14.47	34,728
2017-01-06	ATRA	Sale	6,000	17.10	102,600
2017-01-05	ATRA	Sale	2,400	16.36	39,264
2016-12-22	ATRA	Sale	2,400	15.49	37,188
2016-12-23	ATRA	Sale	2,400	15.25	36,600
2016-12-06	ATRA	Sale	3,600	18.55	66,780
2016-12-07	ATRA	Sale	3,600	17.30	62,280
2016-11-22	ATRA	Sale	8,400	18.21	152,964
2016-11-23	ATRA	Sale	3,600	18.81	67,716
2016-11-15	ATRA	Option Ex	5,908	.00	0
2016-10-26	ATRA	Sale	2,400	13.91	33,384
2016-10-27	ATRA	Sale	2,400	13.70	32,880
2016-10-13	ATRA	Sale	2,400	15.91	38,184
2016-10-14	ATRA	Sale	2,400	16.01	38,424
2016-09-27	ATRA	Sale	7,200	20.50	147,600
2016-09-28	ATRA	Sale	4,800	21.61	103,728
2016-09-15	ATRA	Sale	3,600	19.39	69,804
2016-09-16	ATRA	Sale	3,600	19.32	69,552
2016-08-22	ATRA	Sale	4,800	22.58	108,383
2016-08-23	ATRA	Sale	4,800	22.08	105,983
2016-08-15	ATRA	Option Ex	5,908	.00	0
2016-07-20	ATRA	Sale	4,800	21.99	105,551
2016-07-21	ATRA	Sale	4,800	22.22	106,656
2016-07-07	ATRA	Sale	4,800	22.80	109,440
2016-07-08	ATRA	Sale	4,800	22.96	110,208
2016-06-24	ATRA	Sale	4,800	21.32	102,336
2016-06-23	ATRA	Sale	4,800	21.19	101,712
2016-06-07	ATRA	Sale	7,200	20.57	148,140
2016-06-08	ATRA	Sale	4,800	20.79	99,792
2016-05-25	ATRA	Sale	3,600	18.03	64,908
2016-05-26	ATRA	Sale	3,600	17.35	62,460
2016-05-16	ATRA	Option Ex	5,907	.00	0
2016-04-26	ATRA	Sale	100	20.15	2,014
2016-04-25	ATRA	Sale	1,200	20.12	24,144
2016-04-12	ATRA	Sale	1,200	20.20	24,240
2016-04-11	ATRA	Sale	12,010	20.42	245,244
2016-04-01	ATRA	Sale	890	20.04	17,835
2016-03-31	ATRA	Sale	300	20.01	6,003
2016-02-16	ATRA	Option Ex	5,908	.00	0
2016-01-14	ATRA	Sale	1,200	20.07	24,084
2016-01-13	ATRA	Sale	1,200	20.32	24,384
2015-12-30	ATRA	Sale	1,200	25.21	30,252
2015-12-31	ATRA	Sale	1,200	26.59	31,902
2015-12-14	ATRA	Sale	1,200	23.91	28,695
2015-12-15	ATRA	Sale	1,200	21.48	25,779
2015-12-04	ATRA	Sale	2,000	37.46	74,920
2015-12-03	ATRA	Sale	2,000	37.39	74,786
2015-11-24	ATRA	Sale	2,000	35.77	71,546
2015-11-23	ATRA	Sale	2,800	34.74	97,272
2015-11-16	ATRA	Option Ex	5,908	.00	0
2015-10-21	ATRA	Sale	2,000	27.12	54,234
2015-10-22	ATRA	Sale	1,200	24.86	29,832
2015-10-07	ATRA	Sale	2,000	34.99	69,980
2015-10-06	ATRA	Sale	2,000	31.47	62,940
2015-09-23	ATRA	Sale	2,600	43.29	112,554
2015-09-24	ATRA	Sale	2,600	42.62	110,799
2015-09-10	ATRA	Sale	2,600	45.79	119,061
2015-09-11	ATRA	Sale	2,600	46.66	121,323
2015-08-28	ATRA	Sale	2,600	39.63	103,051
2015-08-27	ATRA	Sale	2,600	39.34	102,291
2015-08-17	ATRA	Option Ex	5,907	.00	0
2015-07-30	ATRA	Sale	2,600	56.59	147,134
2015-07-31	ATRA	Sale	2,600	56.37	146,562
2015-07-17	ATRA	Sale	2,600	60.30	156,793
2015-07-16	ATRA	Sale	2,600	61.83	160,765
2015-07-01	ATRA	Sale	2,600	48.54	126,204
2015-06-30	ATRA	Sale	2,600	52.76	137,183
2015-06-17	ATRA	Sale	2,600	55.23	143,598
2015-06-18	ATRA	Sale	2,600	54.84	142,591
2015-06-05	ATRA	Sale	2,600	44.54	115,811
2015-06-04	ATRA	Sale	3,800	42.38	161,032
2015-05-21	ATRA	Sale	2,000	37.77	75,530
2015-05-22	ATRA	Sale	2,000	37.78	75,560
2015-05-15	ATRA	Option Ex	31,508	.00	0
2015-04-22	ATRA	Sale	2,600	60.01	156,026
2015-04-23	ATRA	Sale	2,600	62.70	163,020

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 Ciechanover Isaac E. (Chief Executive Officer of Atara Biotherapeutics, Inc. at the time of this reporting) see the Securities and Exchange Commission (SEC) website.

▪ Real-time Insider Trading

▪ Insider Officer Cluster Trading

▪ Top Officer Buys of the Week

▪ Top Officer Buys of the Month