Insider · CIK 0001612096
Isaac E. Ciechanover
Files at: ATRA. On EDGAR ↗
Reported trades — common stock
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Feb 27, 2019 SForm 4 → | Mar 1, 4:10 pm EST | Atara Biotherapeutics, Inc.ATRA | 7,800 | $36.14 | $281,891 | 335,537 | −2.27% | plan? |
| Feb 15, 2019 FForm 4 → | Feb 19, 5:06 pm EST | Atara Biotherapeutics, Inc.ATRA | 1,176 | $40.45 | $47,569 | 332,243 | — | plan? |
| Feb 11, 2019 SForm 4 → | Feb 12, 7:18 pm EST | Atara Biotherapeutics, Inc.ATRA | 7,800 | $38.77 | $302,367 | 342,138 | −2.23% | plan? |
| Feb 9, 2019 FForm 4 → | Feb 12, 7:18 pm EST | Atara Biotherapeutics, Inc.ATRA | 20,324 | $38.49 | $782,271 | 334,618 | — | plan? |
| Feb 6, 2019 FForm 4/A → | Feb 12, 7:17 pm EST | Atara Biotherapeutics, Inc.ATRA | 24,683 | $38.47 | $949,555 | 375,611 | — | plan? |
| Feb 6, 2019 FForm 4 → | Feb 8, 4:27 pm EST | Atara Biotherapeutics, Inc.ATRA | 24,683 | — | — | 375,611 | — | plan? amended |
| Jan 23, 2019 SForm 4 → | Jan 25, 8:16 pm EST | Atara Biotherapeutics, Inc.ATRA | 7,800 | $35.06 | $273,433 | 296,452 | −2.56% | plan? |
| Jan 9, 2019 SForm 4 → | Jan 10, 6:08 pm EST | Atara Biotherapeutics, Inc.ATRA | 7,800 | $34.55 | $269,470 | 4,078 | −65.7% | plan? |
| Dec 27, 2018 SForm 4 → | Dec 28, 6:51 pm EST | Atara Biotherapeutics, Inc.ATRA | 7,800 | $33.88 | $264,233 | 11,878 | −39.6% | plan? |
| Dec 12, 2018 SForm 4 → | Dec 13, 6:58 pm EST | Atara Biotherapeutics, Inc.ATRA | 7,800 | $42.66 | $332,709 | 19,678 | −28.4% | plan? |
| Nov 28, 2018 SForm 4 → | Nov 29, 7:39 pm EST | Atara Biotherapeutics, Inc.ATRA | 7,800 | $40.39 | $315,035 | 27,478 | −22.1% | plan? |
| Nov 14, 2018 SForm 4 → | Nov 15, 7:06 pm EST | Atara Biotherapeutics, Inc.ATRA | 7,800 | $34.62 | $270,052 | 35,278 | −18.1% | plan? |
| Oct 22, 2018 SForm 4 → | Oct 23, 6:10 pm EDT | Atara Biotherapeutics, Inc.ATRA | 7,800 | $33.95 | $264,796 | 43,078 | −15.3% | plan? |
| Oct 4, 2018 SForm 4 → | Oct 5, 7:45 pm EDT | Atara Biotherapeutics, Inc.ATRA | 7,800 | $40.22 | $313,753 | 50,878 | −13.3% | plan? |
| Sep 22, 2018 FForm 4 → | Sep 25, 4:17 pm EDT | Atara Biotherapeutics, Inc.ATRA | 79,328 | $39.85 | $3,161,221 | 733,285 | — | plan? |
| Sep 18, 2018 SForm 4 → | Sep 20, 4:26 pm EDT | Atara Biotherapeutics, Inc.ATRA | 7,800 | $39.81 | $310,479 | 58,678 | −11.7% | plan? |
| Sep 6, 2018 SForm 4 → | Sep 10, 4:19 pm EDT | Atara Biotherapeutics, Inc.ATRA | 7,800 | $39.35 | $306,923 | 66,478 | −10.5% | plan? |
| Aug 20, 2018 SForm 4 → | Aug 22, 4:19 pm EDT | Atara Biotherapeutics, Inc.ATRA | 7,800 | $36.37 | $283,647 | 74,278 | −9.50% | plan? |
| Aug 6, 2018 SForm 4 → | Aug 7, 5:56 pm EDT | Atara Biotherapeutics, Inc.ATRA | 7,800 | $37.43 | $291,957 | 82,078 | −8.68% | plan? |
| Jul 26, 2018 SForm 4 → | Jul 30, 4:43 pm EDT | Atara Biotherapeutics, Inc.ATRA | 7,800 | $38.00 | $296,432 | 89,878 | −7.99% | plan? |
| Jul 9, 2018 SForm 4 → | Jul 11, 4:09 pm EDT | Atara Biotherapeutics, Inc.ATRA | 58,400 | $40.00 | $2,335,739 | 97,678 | −37.4% | plan? |
| Jun 26, 2018 SForm 4 → | Jun 27, 7:15 pm EDT | Atara Biotherapeutics, Inc.ATRA | 6,400 | $39.60 | $253,425 | 156,078 | −3.94% | plan? |
| Jun 5, 2018 SForm 4 → | Jun 6, 7:18 pm EDT | Atara Biotherapeutics, Inc.ATRA | 8,800 | $48.56 | $427,288 | 162,478 | −5.14% | plan? |
| May 21, 2018 SForm 4 → | May 22, 7:02 pm EDT | Atara Biotherapeutics, Inc.ATRA | 8,800 | $51.74 | $455,313 | 171,278 | −4.89% | plan? |
| May 9, 2018 SForm 4 → | May 10, 7:46 pm EDT | Atara Biotherapeutics, Inc.ATRA | 8,800 | $39.85 | $350,637 | 180,078 | −4.66% | plan? |
| Apr 26, 2018 SForm 4 → | Apr 30, 4:15 pm EDT | Atara Biotherapeutics, Inc.ATRA | 8,800 | $42.46 | $373,659 | 188,878 | −4.45% | plan? |
| Apr 11, 2018 SForm 4 → | Apr 12, 6:14 pm EDT | Atara Biotherapeutics, Inc.ATRA | 8,800 | $41.87 | $368,472 | 197,678 | −4.26% | plan? |
| Mar 27, 2018 SForm 4/A → | Apr 3, 6:55 pm EDT | Atara Biotherapeutics, Inc.ATRA | 200 | $38.40 | $7,680 | 206,478 | −0.10% | plan? |
| Mar 26, 2018 SForm 4 → | Mar 27, 8:30 pm EDT | Atara Biotherapeutics, Inc.ATRA | 8,800 | $38.59 | $339,549 | 206,478 | −4.09% | plan? amended |
| Mar 15, 2018 SForm 4 → | Mar 19, 4:36 pm EDT | Atara Biotherapeutics, Inc.ATRA | 8,800 | $42.13 | $370,748 | 215,278 | −3.93% | plan? |
| Mar 12, 2018 SForm 4 → | Mar 14, 5:23 pm EDT | Atara Biotherapeutics, Inc.ATRA | 1,000 | $46.31 | $46,314 | 224,078 | −0.44% | plan? |
| Feb 20, 2018 SForm 4 → | Feb 22, 7:42 pm EST | Atara Biotherapeutics, Inc.ATRA | 17,800 | $44.65 | $794,733 | 225,078 | −7.33% | plan? |
| Feb 15, 2018 MForm 4 → | Feb 20, 8:22 pm EST | Atara Biotherapeutics, Inc.ATRA | 3,938 | — | — | 812,613 | — | plan? |
| Feb 15, 2018 SForm 4 → | Feb 20, 8:22 pm EST | Atara Biotherapeutics, Inc.ATRA | 20,000 | $46.92 | $938,459 | 242,878 | −7.61% | plan? |
| Feb 13, 2018 SForm 4 → | Feb 14, 7:54 pm EST | Atara Biotherapeutics, Inc.ATRA | 20,000 | $46.80 | $935,956 | 262,878 | −7.07% | plan? |
| Feb 8, 2018 SForm 4 → | Feb 12, 5:09 pm EST | Atara Biotherapeutics, Inc.ATRA | 8,800 | $37.44 | $329,429 | 282,878 | −3.02% | plan? |
| Feb 6, 2018 AForm 4 → | Feb 8, 5:42 pm EST | Atara Biotherapeutics, Inc.ATRA | 65,000 | — | — | 808,675 | — | plan? |
| Jan 25, 2018 SForm 4 → | Jan 29, 7:39 pm EST | Atara Biotherapeutics, Inc.ATRA | 19,300 | $35.26 | $680,534 | 291,678 | −6.21% | plan? |
| Jan 22, 2018 SForm 4 → | Jan 24, 7:44 pm EST | Atara Biotherapeutics, Inc.ATRA | 48,500 | $34.58 | $1,677,279 | 310,978 | −13.5% | plan? |
| Jan 16, 2018 SForm 4 → | Jan 18, 5:23 pm EST | Atara Biotherapeutics, Inc.ATRA | 600 | $30.38 | $18,228 | 359,478 | −0.17% | plan? |
| Jan 10, 2018 SForm 4 → | Jan 12, 7:55 pm EST | Atara Biotherapeutics, Inc.ATRA | 28,700 | $21.39 | $613,843 | 360,078 | −7.38% | plan? |
| Dec 28, 2017 SForm 4 → | Jan 2, 2018, 7:12 pm EST | Atara Biotherapeutics, Inc.ATRA | 22,200 | $18.29 | $405,958 | 388,778 | −5.40% | plan? |
| Dec 12, 2017 SForm 4 → | Dec 14, 5:34 pm EST | Atara Biotherapeutics, Inc.ATRA | 4,400 | $14.65 | $64,438 | 410,978 | −1.06% | plan? |
| Nov 29, 2017 SForm 4 → | Dec 1, 4:37 pm EST | Atara Biotherapeutics, Inc.ATRA | 4,400 | $14.25 | $62,678 | 415,378 | −1.05% | plan? |
| Nov 15, 2017 MForm 4 → | Nov 17, 6:26 pm EST | Atara Biotherapeutics, Inc.ATRA | 5,908 | — | — | 743,675 | — | plan? |
| Nov 13, 2017 SForm 4 → | Nov 14, 8:31 pm EST | Atara Biotherapeutics, Inc.ATRA | 4,400 | $13.47 | $59,268 | 419,778 | −1.04% | plan? |
| Oct 26, 2017 SForm 4 → | Oct 30, 4:17 pm EDT | Atara Biotherapeutics, Inc.ATRA | 4,400 | $13.59 | $59,774 | 424,178 | −1.03% | plan? |
| Oct 11, 2017 SForm 4 → | Oct 12, 7:55 pm EDT | Atara Biotherapeutics, Inc.ATRA | 4,400 | $15.02 | $66,066 | 428,578 | −1.02% | plan? |
| Sep 19, 2017 SForm 4 → | Sep 21, 4:05 pm EDT | Atara Biotherapeutics, Inc.ATRA | 4,400 | $15.54 | $68,354 | 432,978 | −1.01% | plan? |
| Sep 6, 2017 SForm 4 → | Sep 8, 4:02 pm EDT | Atara Biotherapeutics, Inc.ATRA | 4,400 | $15.02 | $66,066 | 437,378 | −1.00% | plan? |
| Aug 22, 2017 SForm 4 → | Aug 24, 5:10 pm EDT | Atara Biotherapeutics, Inc.ATRA | 4,400 | $13.54 | $59,554 | 441,778 | −0.99% | plan? |
| Aug 15, 2017 MForm 4 → | Aug 17, 5:34 pm EDT | Atara Biotherapeutics, Inc.ATRA | 5,908 | — | — | 737,767 | — | plan? |
| Aug 10, 2017 SForm 4 → | Aug 14, 7:23 pm EDT | Atara Biotherapeutics, Inc.ATRA | 4,400 | $14.67 | $64,526 | 446,178 | −0.98% | plan? |
| Jul 24, 2017 SForm 4 → | Jul 26, 4:52 pm EDT | Atara Biotherapeutics, Inc.ATRA | 5,500 | $16.49 | $90,704 | 450,578 | −1.21% | plan? |
| May 30, 2017 SForm 4 → | May 31, 7:44 pm EDT | Atara Biotherapeutics, Inc.ATRA | 6,900 | $13.35 | $92,115 | 456,078 | −1.49% | plan? |
| May 17, 2017 SForm 4 → | May 19, 4:05 pm EDT | Atara Biotherapeutics, Inc.ATRA | 4,800 | $14.91 | $71,568 | 462,978 | −1.03% | plan? |
| May 15, 2017 MForm 4 → | May 17, 4:59 pm EDT | Atara Biotherapeutics, Inc.ATRA | 5,908 | — | — | 731,859 | — | plan? |
| Apr 25, 2017 SForm 4 → | Apr 26, 7:34 pm EDT | Atara Biotherapeutics, Inc.ATRA | 7,200 | $17.56 | $126,405 | 467,778 | −1.52% | plan? |
| Apr 10, 2017 SForm 4 → | Apr 12, 4:20 pm EDT | Atara Biotherapeutics, Inc.ATRA | 7,200 | $17.03 | $122,598 | 474,978 | −1.49% | plan? |
| Mar 27, 2017 SForm 4 → | Mar 28, 8:13 pm EDT | Atara Biotherapeutics, Inc.ATRA | 16,000 | $20.06 | $320,944 | 482,178 | −3.21% | plan? |
| Mar 16, 2017 SForm 4 → | Mar 20, 6:50 pm EDT | Atara Biotherapeutics, Inc.ATRA | 30,800 | $19.38 | $596,808 | 498,178 | −5.82% | plan? |
| Feb 15, 2017 SForm 4 → | Feb 16, 8:08 pm EST | Atara Biotherapeutics, Inc.ATRA | 4,800 | $15.56 | $74,664 | 348,978 | −1.36% | plan? |
| Feb 15, 2017 MForm 4 → | Feb 16, 8:08 pm EST | Atara Biotherapeutics, Inc.ATRA | 5,907 | — | — | 725,951 | — | plan? |
| Feb 6, 2017 AForm 4 → | Feb 8, 5:35 pm EST | Atara Biotherapeutics, Inc.ATRA | 165,000 | — | — | 720,044 | — | plan? |
| Feb 2, 2017 SForm 4 → | Feb 6, 5:29 pm EST | Atara Biotherapeutics, Inc.ATRA | 4,800 | $13.66 | $65,568 | 353,778 | −1.34% | plan? |
| Jan 17, 2017 SForm 4 → | Jan 19, 4:34 pm EST | Atara Biotherapeutics, Inc.ATRA | 6,000 | $14.24 | $85,416 | 358,578 | −1.65% | plan? |
| Jan 5, 2017 SForm 4 → | Jan 9, 4:17 pm EST | Atara Biotherapeutics, Inc.ATRA | 8,400 | $16.89 | $141,864 | 364,578 | −2.25% | plan? |
| Dec 22, 2016 SForm 4 → | Dec 23, 6:52 pm EST | Atara Biotherapeutics, Inc.ATRA | 4,800 | $15.22 | $73,073 | 372,978 | −1.27% | plan? |
| Dec 6, 2016 SForm 4 → | Dec 8, 5:16 pm EST | Atara Biotherapeutics, Inc.ATRA | 7,200 | $17.93 | $129,060 | 377,778 | −1.87% | plan? |
| Nov 22, 2016 SForm 4 → | Nov 23, 8:13 pm EST | Atara Biotherapeutics, Inc.ATRA | 12,000 | $18.34 | $220,106 | 384,978 | −3.02% | plan? |
| Nov 15, 2016 MForm 4 → | Nov 17, 4:54 pm EST | Atara Biotherapeutics, Inc.ATRA | 5,908 | — | — | 555,044 | — | plan? |
| Oct 26, 2016 SForm 4 → | Oct 28, 8:37 pm EDT | Atara Biotherapeutics, Inc.ATRA | 4,800 | $13.81 | $66,264 | 396,978 | −1.19% | plan? |
| Oct 13, 2016 SForm 4 → | Oct 17, 4:27 pm EDT | Atara Biotherapeutics, Inc.ATRA | 4,800 | $15.96 | $76,608 | 401,778 | −1.18% | plan? |
| Sep 27, 2016 SForm 4 → | Sep 29, 4:26 pm EDT | Atara Biotherapeutics, Inc.ATRA | 12,000 | $20.87 | $250,446 | 406,578 | −2.87% | plan? |
| Sep 22, 2016 AForm 4 → | Sep 23, 7:25 pm EDT | Atara Biotherapeutics, Inc.ATRA | 320,000 | — | — | 549,136 | — | plan? |
| Sep 15, 2016 SForm 4 → | Sep 19, 5:13 pm EDT | Atara Biotherapeutics, Inc.ATRA | 7,200 | $19.36 | $139,356 | 418,578 | −1.69% | plan? |
| Aug 22, 2016 SForm 4 → | Aug 23, 7:57 pm EDT | Atara Biotherapeutics, Inc.ATRA | 9,600 | $22.33 | $214,368 | 425,778 | −2.20% | plan? |
| Jul 20, 2016 SForm 4 → | Jul 21, 9:38 pm EDT | Atara Biotherapeutics, Inc.ATRA | 9,600 | $22.11 | $212,208 | 315,511 | −2.95% | plan? |
| Jul 13, 2016 GMForm 4 → | Aug 17, 7:43 pm EDT | Atara Biotherapeutics, Inc.ATRA | 336,865 | — | — | 0 | — | plan? late |
| Jul 7, 2016 SForm 4 → | Jul 11, 4:42 pm EDT | Atara Biotherapeutics, Inc.ATRA | 9,600 | $22.88 | $219,648 | 325,111 | −2.87% | plan? |
| Jun 23, 2016 SForm 4 → | Jun 27, 4:57 pm EDT | Atara Biotherapeutics, Inc.ATRA | 9,600 | $21.26 | $204,048 | 334,711 | −2.79% | plan? |
| Jun 7, 2016 SForm 4 → | Jun 8, 8:19 pm EDT | Atara Biotherapeutics, Inc.ATRA | 12,000 | $20.53 | $246,372 | 344,311 | −3.37% | plan? |
| May 25, 2016 SForm 4 → | May 27, 6:38 pm EDT | Atara Biotherapeutics, Inc.ATRA | 7,200 | $17.69 | $127,368 | 356,311 | −1.98% | plan? |
| May 16, 2016 MForm 4 → | May 18, 7:02 pm EDT | Atara Biotherapeutics, Inc.ATRA | 5,907 | — | — | 223,228 | — | plan? |
| Apr 25, 2016 SForm 4 → | Apr 26, 9:17 pm EDT | Atara Biotherapeutics, Inc.ATRA | 1,300 | $20.12 | $26,159 | 363,511 | −0.36% | plan? |
| Apr 11, 2016 SForm 4 → | Apr 13, 7:49 pm EDT | Atara Biotherapeutics, Inc.ATRA | 13,210 | $20.40 | $269,484 | 364,811 | −3.49% | plan? |
| Mar 31, 2016 SForm 4 → | Apr 4, 4:48 pm EDT | Atara Biotherapeutics, Inc.ATRA | 1,190 | $20.03 | $23,839 | 378,021 | −0.31% | plan? |
| Feb 16, 2016 MForm 4 → | Feb 18, 8:12 pm EST | Atara Biotherapeutics, Inc.ATRA | 5,908 | — | — | 217,321 | — | plan? |
| Feb 9, 2016 AForm 4 → | Feb 11, 8:48 pm EST | Atara Biotherapeutics, Inc.ATRA | 163,973 | — | — | 211,413 | — | plan? |
| Jan 13, 2016 SForm 4 → | Jan 15, 4:06 pm EST | Atara Biotherapeutics, Inc.ATRA | 2,400 | $20.20 | $48,468 | 379,211 | −0.63% | plan? |
| Dec 30, 2015 SForm 4 → | Jan 4, 2016, 4:11 pm EST | Atara Biotherapeutics, Inc.ATRA | 2,400 | $26.00 | $62,388 | 381,611 | −0.62% | plan? |
| Dec 14, 2015 SForm 4 → | Dec 16, 5:10 pm EST | Atara Biotherapeutics, Inc.ATRA | 2,400 | $22.46 | $53,908 | 384,011 | −0.62% | plan? |
| Dec 3, 2015 SForm 4 → | Dec 7, 5:15 pm EST | Atara Biotherapeutics, Inc.ATRA | 4,000 | $37.45 | $149,780 | 386,411 | −1.02% | plan? |
| Nov 23, 2015 SForm 4 → | Nov 25, 4:04 pm EST | Atara Biotherapeutics, Inc.ATRA | 4,800 | $35.03 | $168,163 | 390,411 | −1.21% | plan? |
| Nov 16, 2015 MForm 4 → | Nov 18, 6:52 pm EST | Atara Biotherapeutics, Inc.ATRA | 5,908 | — | — | 47,440 | — | plan? |
| Oct 21, 2015 SForm 4 → | Oct 23, 7:26 pm EDT | Atara Biotherapeutics, Inc.ATRA | 3,200 | $25.85 | $82,726 | 395,211 | −0.80% | plan? |
| Oct 6, 2015 SForm 4 → | Oct 8, 4:21 pm EDT | Atara Biotherapeutics, Inc.ATRA | 4,000 | $33.08 | $132,336 | 398,411 | −0.99% | plan? |
| Sep 23, 2015 SForm 4 → | Sep 25, 6:49 pm EDT | Atara Biotherapeutics, Inc.ATRA | 5,200 | $42.99 | $223,531 | 402,411 | −1.28% | plan? |
| Sep 10, 2015 SForm 4 → | Sep 14, 6:59 pm EDT | Atara Biotherapeutics, Inc.ATRA | 5,200 | $46.16 | $240,045 | 407,611 | −1.26% | plan? |
| Aug 27, 2015 SForm 4 → | Aug 31, 6:52 pm EDT | Atara Biotherapeutics, Inc.ATRA | 5,200 | $39.25 | $204,086 | 374,982 | −1.37% | plan? |