Insider Stock Trading History of Day Christopher


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 Day Christopher since year 2005. The trader's CIK number is 1558685. At the time of this reporting, Day Christopher is the VP, Marketing of Ambarella Inc . (stock ticker symbol AMBA). See this page for all insider trading activities at Ambarella Inc .


Stock purchases, sales, and option exercises reported by insider Day Christopher since 2005.
  Trade Date   Symbol Company Name (Issuer) Trade Type     Shares       Price ($)   Value ($)
2017-09-29 AMBA Ambarella Inc Sale 2,618 49.15 128,674
2017-09-18 AMBA Ambarella Inc Option Ex 2,934 .00 0
2017-09-18 AMBA Ambarella Inc Sale 1,529 46.50 71,098
2017-06-16 AMBA Ambarella Inc Option Ex 2,932 .00 0
2017-06-16 AMBA Ambarella Inc Sale 1,526 48.77 74,423
2017-03-31 AMBA Ambarella Inc Sale 2,109 55.50 117,049
2017-03-16 AMBA Ambarella Inc Sale 1,193 56.19 67,034
2017-03-16 AMBA Ambarella Inc Option Ex 2,057 .00 0
2017-03-13 AMBA Ambarella Inc Option Ex 1,071 9.99 10,699
2017-03-13 AMBA Ambarella Inc Sale 1,071 55.50 59,440
2016-12-16 AMBA Ambarella Inc Option Ex 2,055 .00 0
2016-12-16 AMBA Ambarella Inc Sale 1,656 54.21 89,771
2016-09-29 AMBA Ambarella Inc Option Ex 2,063 24.45 50,450
2016-09-29 AMBA Ambarella Inc Sale 4,272 69.32 296,135
2016-09-28 AMBA Ambarella Inc Sale 3,543 68.64 243,195
2016-09-27 AMBA Ambarella Inc Sale 2,595 67.18 174,326
2016-09-28 AMBA Ambarella Inc Option Ex 3,000 24.45 73,365
2016-09-27 AMBA Ambarella Inc Option Ex 926 8.82 8,167
2016-09-21 AMBA Ambarella Inc Sale 2,000 67.00 134,000
2016-09-21 AMBA Ambarella Inc Option Ex 2,000 9.99 19,980
2016-09-16 AMBA Ambarella Inc Sale 1,405 67.98 95,511
2016-09-16 AMBA Ambarella Inc Option Ex 2,613 .00 0
2016-06-30 AMBA Ambarella Inc Sale 1,173 50.85 59,647
2016-06-16 AMBA Ambarella Inc Option Ex 2,612 .00 0
2016-06-16 AMBA Ambarella Inc Sale 1,405 51.97 73,017
2016-06-16 AMBA Ambarella Inc Option Ex 2,612 .00 0
2016-06-16 AMBA Ambarella Inc Sale 1,405 51.97 73,017
2016-03-29 AMBA Ambarella Inc Sale 1,812 43.50 78,822
2016-03-16 AMBA Ambarella Inc Option Ex 3,550 .00 0
2016-03-16 AMBA Ambarella Inc Sale 1,475 37.12 54,751
2015-12-21 AMBA Ambarella Inc Sale 894 58.50 52,299
2015-12-16 AMBA Ambarella Inc Option Ex 3,548 .00 0
2015-12-16 AMBA Ambarella Inc Sale 2,041 56.97 116,275
2015-12-17 AMBA Ambarella Inc Sale 776 58.50 45,396
2015-12-08 AMBA Ambarella Inc Sale 515 56.50 29,097
2015-12-10 AMBA Ambarella Inc Sale 261 59.25 15,464
2015-09-30 AMBA Ambarella Inc Sale 1,010 58.16 58,741
2015-09-16 AMBA Ambarella Inc Option Ex 3,550 .00 0
2015-09-16 AMBA Ambarella Inc Sale 1,880 70.80 133,104
2015-06-16 AMBA Ambarella Inc Option Ex 3,549 .00 0
2015-06-17 AMBA Ambarella Inc Option Ex 1,237 38.92 48,144
2015-06-17 AMBA Ambarella Inc Sale 2,458 121.00 297,418
2015-06-16 AMBA Ambarella Inc Sale 1,763 117.60 207,335
2015-06-18 AMBA Ambarella Inc Sale 2,084 125.00 260,500
2015-06-10 AMBA Ambarella Inc Option Ex 1,000 9.99 9,990
2015-06-10 AMBA Ambarella Inc Sale 1,000 115.00 115,000
2015-06-05 AMBA Ambarella Inc Sale 1,389 102.00 141,678
2015-06-05 AMBA Ambarella Inc Option Ex 1,389 8.82 12,250
2015-03-31 AMBA Ambarella Inc Option Ex 1,000 9.99 9,990
2015-03-31 AMBA Ambarella Inc Sale 1,000 75.50 75,500
2015-03-27 AMBA Ambarella Inc Option Ex 1,389 8.82 12,250
2015-03-26 AMBA Ambarella Inc Sale 2,632 69.00 181,608
2015-03-27 AMBA Ambarella Inc Sale 1,389 70.90 98,480
2015-03-30 AMBA Ambarella Inc Option Ex 1,000 9.99 9,990
2015-03-30 AMBA Ambarella Inc Sale 1,000 74.00 74,000
2015-03-20 AMBA Ambarella Inc Sale 2,500 71.02 177,550
2015-03-17 AMBA Ambarella Inc Option Ex 3,550 .00 0
2015-03-17 AMBA Ambarella Inc Sale 1,341 68.22 91,483
2015-03-19 AMBA Ambarella Inc Sale 809 68.75 55,618
2015-03-16 AMBA Ambarella Inc Sale 961 69.35 66,645
2014-12-30 AMBA Ambarella Inc Option Ex 2,000 9.99 19,980
2014-12-30 AMBA Ambarella Inc Sale 2,000 54.90 109,800
2014-12-26 AMBA Ambarella Inc Sale 2,593 52.75 136,780
2014-12-26 AMBA Ambarella Inc Option Ex 2,593 8.82 22,870
2014-12-22 AMBA Ambarella Inc Sale 3,756 48.75 183,105
2014-12-18 AMBA Ambarella Inc Sale 1,016 48.18 48,950
2014-12-16 AMBA Ambarella Inc Option Ex 3,548 .00 0
2014-12-16 AMBA Ambarella Inc Sale 1,879 46.15 86,715
2014-09-29 AMBA Ambarella Inc Sale 1,297 42.50 55,122
2014-09-29 AMBA Ambarella Inc Option Ex 1,297 8.82 11,439
2014-09-23 AMBA Ambarella Inc Option Ex 2,500 8.82 22,050
2014-09-23 AMBA Ambarella Inc Sale 2,500 41.90 104,750
2014-09-16 AMBA Ambarella Inc Option Ex 1,494 .00 0
2014-09-16 AMBA Ambarella Inc Sale 1,385 33.66 46,619
2014-06-16 AMBA Ambarella Inc Option Ex 1,492 .00 0
2014-06-16 AMBA Ambarella Inc Sale 1,365 26.55 36,240
2014-04-01 AMBA Ambarella Inc Option Ex 2,084 8.64 18,005
2014-03-19 AMBA Ambarella Inc Option Ex 5,132 8.64 44,340
2014-03-18 AMBA Ambarella Inc Option Ex 556 .00 0
2014-03-18 AMBA Ambarella Inc Sale 689 28.00 19,292
2014-01-02 AMBA Ambarella Inc Option Ex 40,000 9.15 366,000
2014-01-02 AMBA Ambarella Inc Sale 40,000 33.30 1,332,080
2013-12-19 AMBA Ambarella Inc Option Ex 3,756 8.64 32,451
2013-12-17 AMBA Ambarella Inc Sale 632 24.43 15,439
2013-12-17 AMBA Ambarella Inc Option Ex 555 .00 0
2013-10-17 AMBA Ambarella Inc Option Ex 10,000 8.64 86,400
2013-10-17 AMBA Ambarella Inc Sale 10,000 21.98 219,760
2013-10-01 AMBA Ambarella Inc Option Ex 10,000 8.64 86,400
2013-10-01 AMBA Ambarella Inc Sale 10,000 20.50 204,950
2013-09-25 AMBA Ambarella Inc Option Ex 10,000 8.64 86,400
2013-09-25 AMBA Ambarella Inc Sale 10,000 18.80 188,009
2013-09-16 AMBA Ambarella Inc Sale 212 17.80 3,773
2013-09-16 AMBA Ambarella Inc Option Ex 556 .00 0
2013-09-13 AMBA Ambarella Inc Option Ex 400 8.64 3,456
2013-09-13 AMBA Ambarella Inc Sale 400 17.95 7,181
2013-09-16 AMBA Ambarella Inc Option Ex 1,200 8.64 10,368
2013-09-16 AMBA Ambarella Inc Sale 1,200 18.13 21,753
2013-09-11 AMBA Ambarella Inc Sale 390 17.95 7,000
2013-09-12 AMBA Ambarella Inc Option Ex 1,300 8.64 11,232
2013-09-11 AMBA Ambarella Inc Option Ex 390 8.64 3,369
2013-09-12 AMBA Ambarella Inc Sale 1,300 17.96 23,350
2013-09-10 AMBA Ambarella Inc Option Ex 16,710 8.64 144,374
2013-09-10 AMBA Ambarella Inc Sale 16,710 17.90 299,142
2013-06-28 AMBA Ambarella Inc Sale 4,750 16.50 78,375
2013-06-28 AMBA Ambarella Inc Option Ex 4,750 8.64 41,040
2013-06-17 AMBA Ambarella Inc Option Ex 555 .00 0
2013-06-18 AMBA Ambarella Inc Sale 204 18.29 3,731
2013-06-11 AMBA Ambarella Inc Option Ex 5,000 8.64 43,200
2013-06-10 AMBA Ambarella Inc Sale 15,000 17.00 255,074
2013-06-11 AMBA Ambarella Inc Sale 5,000 17.95 89,750
2013-06-10 AMBA Ambarella Inc Option Ex 15,000 8.64 129,600
2013-04-08 AMBA Ambarella Inc Option Ex 1,111 .00 0

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 Day Christopher (VP, Marketing of Ambarella Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.