The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Day Christopher since 2015.
This trader's CIK number is 1558685.
At the time of last reporting, Day Christopher was the VP, Marketing of Ambarella Inc. (stock ticker symbol AMBA).
Also see all insider trading activities at Ambarella Inc.
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2025 | AMBA | 0 | $0 | 1,655 | $90,187 | 0 | $0 |
| 2024 | AMBA | 0 | $0 | 8,689 | $543,793 | 0 | $0 |
| 2023 | AMBA | 0 | $0 | 11,731 | $909,891 | 6,925 | $0 |
| 2022 | AMBA | 0 | $0 | 16,491 | $1,460,219 | 20,245 | $0 |
| 2021 | AMBA | 0 | $0 | 17,276 | $2,460,841 | 16,676 | $0 |
| 2020 | AMBA | 0 | $0 | 14,304 | $934,883 | 14,647 | $89,516 |
| 2019 | AMBA | 0 | $0 | 23,345 | $1,180,866 | 10,477 | $38,920 |
| 2018 | AMBA | 0 | $0 | 13,157 | $557,195 | 8,818 | $0 |
| 2017 | AMBA | 0 | $0 | 11,157 | $581,811 | 10,833 | $10,699 |
| 2016 | AMBA | 0 | $0 | 22,741 | $1,372,192 | 21,431 | $151,962 |
| 2015 | AMBA | 0 | $0 | 27,703 | $2,293,191 | 21,212 | $102,614 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-06-17 | AMBA | Sale | 342 | 52.26 | 17,872 |
| 2025-03-18 | AMBA | Sale | 479 | 55.02 | 26,354 |
| 2025-03-06 | AMBA | Sale | 834 | 55.11 | 45,961 |
| 2024-12-18 | AMBA | Sale | 929 | 75.41 | 70,051 |
| 2024-12-16 | AMBA | Sale | 482 | 75.41 | 36,347 |
| 2024-12-02 | AMBA | Sale | 1,278 | 71.61 | 91,511 |
| 2024-10-03 | AMBA | Sale | 2,904 | 58.00 | 168,432 |
| 2024-09-17 | AMBA | Sale | 483 | 53.54 | 25,859 |
| 2024-07-08 | AMBA | Sale | 1,408 | 61.66 | 86,817 |
| 2024-06-18 | AMBA | Sale | 487 | 55.48 | 27,018 |
| 2024-03-18 | AMBA | Sale | 416 | 49.27 | 20,496 |
| 2024-03-08 | AMBA | Sale | 302 | 57.16 | 17,262 |
| 2023-09-18 | AMBA | Sale | 351 | 57.30 | 20,112 |
| 2023-07-12 | AMBA | Sale | 2,285 | 82.50 | 188,523 |
| 2023-06-13 | AMBA | Sale | 3,000 | 86.94 | 260,823 |
| 2023-04-13 | AMBA | Sale | 3,675 | 69.24 | 254,456 |
| 2023-03-15 | AMBA | Option Ex | 6,925 | .00 | 0 |
| 2023-03-17 | AMBA | Sale | 2,420 | 76.85 | 185,977 |
| 2022-12-14 | AMBA | Sale | 2,333 | 90.82 | 211,887 |
| 2022-12-14 | AMBA | Sale | 2,333 | 90.82 | 211,887 |
| 2022-12-14 | AMBA | Sale | 2,333 | 90.82 | 211,887 |
| 2022-09-16 | AMBA | Option Ex | 1,305 | .00 | 0 |
| 2022-09-16 | AMBA | Sale | 670 | 63.25 | 42,377 |
| 2022-06-16 | AMBA | Option Ex | 1,303 | .00 | 0 |
| 2022-06-16 | AMBA | Sale | 704 | 66.27 | 46,654 |
| 2022-03-16 | AMBA | Option Ex | 17,637 | .00 | 0 |
| 2022-03-16 | AMBA | Sale | 7,405 | 91.20 | 675,336 |
| 2022-03-14 | AMBA | Sale | 713 | 84.42 | 60,191 |
| 2021-12-27 | AMBA | Sale | 724 | 205.00 | 148,420 |
| 2021-12-16 | AMBA | Sale | 890 | 188.86 | 168,085 |
| 2021-12-16 | AMBA | Option Ex | 1,614 | .00 | 0 |
| 2021-12-07 | AMBA | Sale | 3,496 | 207.40 | 725,070 |
| 2021-12-03 | AMBA | Option Ex | 1,613 | .00 | 0 |
| 2021-12-03 | AMBA | Sale | 832 | 192.69 | 160,318 |
| 2021-03-31 | AMBA | Sale | 285 | 99.82 | 28,447 |
| 2021-03-17 | AMBA | Sale | 4,585 | 110.00 | 504,350 |
| 2021-03-16 | AMBA | Option Ex | 13,449 | .00 | 0 |
| 2021-03-16 | AMBA | Sale | 5,616 | 112.00 | 628,992 |
| 2021-03-09 | AMBA | Sale | 350 | 109.70 | 38,395 |
| 2021-03-11 | AMBA | Sale | 498 | 118.00 | 58,764 |
| 2020-12-16 | AMBA | Sale | 2,145 | 90.77 | 194,710 |
| 2020-12-16 | AMBA | Option Ex | 2,550 | .00 | 0 |
| 2020-12-17 | AMBA | Sale | 1,642 | 89.68 | 147,256 |
| 2020-12-08 | AMBA | Option Ex | 1,300 | 38.92 | 50,596 |
| 2020-12-08 | AMBA | Sale | 1,300 | 90.53 | 117,689 |
| 2020-11-30 | AMBA | Sale | 1,367 | 78.00 | 106,626 |
| 2020-11-30 | AMBA | Option Ex | 1,000 | 38.92 | 38,920 |
| 2020-09-29 | AMBA | Sale | 899 | 52.00 | 46,748 |
| 2020-09-16 | AMBA | Option Ex | 2,550 | .00 | 0 |
| 2020-09-16 | AMBA | Sale | 896 | 53.18 | 47,645 |
| 2020-06-30 | AMBA | Sale | 1,267 | 45.92 | 58,175 |
| 2020-06-16 | AMBA | Sale | 895 | 52.13 | 46,657 |
| 2020-06-16 | AMBA | Option Ex | 2,549 | .00 | 0 |
| 2020-03-31 | AMBA | Sale | 976 | 49.75 | 48,556 |
| 2020-03-27 | AMBA | Sale | 804 | 47.81 | 38,440 |
| 2020-03-17 | AMBA | Option Ex | 4,698 | .00 | 0 |
| 2020-03-17 | AMBA | Sale | 2,113 | 38.99 | 82,381 |
| 2019-12-20 | AMBA | Sale | 1,033 | 57.93 | 59,845 |
| 2019-12-17 | AMBA | Option Ex | 1,878 | .00 | 0 |
| 2019-12-17 | AMBA | Sale | 641 | 56.31 | 36,097 |
| 2019-09-30 | AMBA | Sale | 3,478 | 62.82 | 218,501 |
| 2019-09-30 | AMBA | Option Ex | 1,000 | 38.92 | 38,920 |
| 2019-09-16 | AMBA | Sale | 2,587 | 64.90 | 167,896 |
| 2019-09-17 | AMBA | Sale | 1,348 | 64.14 | 86,463 |
| 2019-09-17 | AMBA | Option Ex | 2,756 | .00 | 0 |
| 2019-09-04 | AMBA | Sale | 405 | 58.72 | 23,779 |
| 2019-06-24 | AMBA | Sale | 2,490 | 43.98 | 109,510 |
| 2019-06-18 | AMBA | Option Ex | 2,755 | .00 | 0 |
| 2019-06-18 | AMBA | Sale | 1,335 | 43.06 | 57,479 |
| 2019-03-29 | AMBA | Sale | 1,886 | 43.10 | 81,286 |
| 2019-03-19 | AMBA | Option Ex | 2,088 | .00 | 0 |
| 2019-03-18 | AMBA | Sale | 2,474 | 43.10 | 106,639 |
| 2019-03-19 | AMBA | Sale | 1,226 | 43.48 | 53,311 |
| 2019-03-08 | AMBA | Sale | 4,442 | 40.54 | 180,060 |
| 2018-12-18 | AMBA | Option Ex | 2,088 | .00 | 0 |
| 2018-12-18 | AMBA | Sale | 1,126 | 38.00 | 42,788 |
| 2018-12-04 | AMBA | Sale | 1,798 | 41.35 | 74,349 |
| 2018-09-18 | AMBA | Option Ex | 3,051 | .00 | 0 |
| 2018-09-19 | AMBA | Sale | 1,533 | 35.51 | 54,436 |
| 2018-09-06 | AMBA | Sale | 1,326 | 39.77 | 52,735 |
| 2018-06-22 | AMBA | Sale | 3,062 | 44.00 | 134,728 |
| 2018-06-18 | AMBA | Option Ex | 1,839 | .00 | 0 |
| 2018-06-18 | AMBA | Sale | 1,023 | 43.27 | 44,265 |
| 2018-06-19 | AMBA | Sale | 2,277 | 44.00 | 100,188 |
| 2018-03-16 | AMBA | Sale | 1,012 | 53.07 | 53,706 |
| 2018-03-16 | AMBA | Option Ex | 1,840 | .00 | 0 |
| 2017-12-18 | AMBA | Option Ex | 1,839 | .00 | 0 |
| 2017-12-18 | AMBA | Sale | 1,111 | 57.69 | 64,093 |
| 2017-09-29 | AMBA | Sale | 2,618 | 49.15 | 128,674 |
| 2017-09-18 | AMBA | Option Ex | 2,934 | .00 | 0 |
| 2017-09-18 | AMBA | Sale | 1,529 | 46.50 | 71,098 |
| 2017-06-16 | AMBA | Option Ex | 2,932 | .00 | 0 |
| 2017-06-16 | AMBA | Sale | 1,526 | 48.77 | 74,423 |
| 2017-03-31 | AMBA | Sale | 2,109 | 55.50 | 117,049 |
| 2017-03-16 | AMBA | Option Ex | 2,057 | .00 | 0 |
| 2017-03-16 | AMBA | Sale | 1,193 | 56.19 | 67,034 |
| 2017-03-13 | AMBA | Sale | 1,071 | 55.50 | 59,440 |
| 2017-03-13 | AMBA | Option Ex | 1,071 | 9.99 | 10,699 |
| 2016-12-16 | AMBA | Option Ex | 2,055 | .00 | 0 |
| 2016-12-16 | AMBA | Sale | 1,656 | 54.21 | 89,771 |
| 2016-09-29 | AMBA | Option Ex | 2,063 | 24.45 | 50,450 |
| 2016-09-29 | AMBA | Sale | 4,272 | 69.32 | 296,135 |
| 2016-09-28 | AMBA | Sale | 3,543 | 68.64 | 243,195 |
| 2016-09-27 | AMBA | Sale | 2,595 | 67.18 | 174,326 |
| 2016-09-28 | AMBA | Option Ex | 3,000 | 24.45 | 73,365 |
| 2016-09-27 | AMBA | Option Ex | 926 | 8.82 | 8,167 |
| 2016-09-21 | AMBA | Sale | 2,000 | 67.00 | 134,000 |
| 2016-09-21 | AMBA | Option Ex | 2,000 | 9.99 | 19,980 |
| 2016-09-16 | AMBA | Sale | 1,405 | 67.98 | 95,511 |
| 2016-09-16 | AMBA | Option Ex | 2,613 | .00 | 0 |
| 2016-06-30 | AMBA | Sale | 1,173 | 50.85 | 59,647 |
| 2016-06-16 | AMBA | Sale | 1,405 | 51.97 | 73,017 |
| 2016-06-16 | AMBA | Option Ex | 2,612 | .00 | 0 |
| 2016-06-16 | AMBA | Sale | 1,405 | 51.97 | 73,017 |
| 2016-06-16 | AMBA | Option Ex | 2,612 | .00 | 0 |
| 2016-03-29 | AMBA | Sale | 1,812 | 43.50 | 78,822 |
| 2016-03-16 | AMBA | Sale | 1,475 | 37.12 | 54,751 |
| 2016-03-16 | AMBA | Option Ex | 3,550 | .00 | 0 |
| 2015-12-21 | AMBA | Sale | 894 | 58.50 | 52,299 |
| 2015-12-17 | AMBA | Sale | 776 | 58.50 | 45,396 |
| 2015-12-16 | AMBA | Sale | 2,041 | 56.97 | 116,275 |
| 2015-12-16 | AMBA | Option Ex | 3,548 | .00 | 0 |
| 2015-12-08 | AMBA | Sale | 515 | 56.50 | 29,097 |
| 2015-12-10 | AMBA | Sale | 261 | 59.25 | 15,464 |
| 2015-09-30 | AMBA | Sale | 1,010 | 58.16 | 58,741 |
| 2015-09-16 | AMBA | Option Ex | 3,550 | .00 | 0 |
| 2015-09-16 | AMBA | Sale | 1,880 | 70.80 | 133,104 |
| 2015-06-18 | AMBA | Sale | 2,084 | 125.00 | 260,500 |
| 2015-06-16 | AMBA | Sale | 1,763 | 117.60 | 207,335 |
| 2015-06-17 | AMBA | Sale | 2,458 | 121.00 | 297,418 |
| 2015-06-17 | AMBA | Option Ex | 1,237 | 38.92 | 48,144 |
| 2015-06-16 | AMBA | Option Ex | 3,549 | .00 | 0 |
| 2015-06-10 | AMBA | Option Ex | 1,000 | 9.99 | 9,990 |
| 2015-06-10 | AMBA | Sale | 1,000 | 115.00 | 115,000 |
| 2015-06-05 | AMBA | Sale | 1,389 | 102.00 | 141,678 |
| 2015-06-05 | AMBA | Option Ex | 1,389 | 8.82 | 12,250 |
| 2015-03-31 | AMBA | Option Ex | 1,000 | 9.99 | 9,990 |
| 2015-03-31 | AMBA | Sale | 1,000 | 75.50 | 75,500 |
| 2015-03-30 | AMBA | Sale | 1,000 | 74.00 | 74,000 |
| 2015-03-30 | AMBA | Option Ex | 1,000 | 9.99 | 9,990 |
| 2015-03-27 | AMBA | Sale | 1,389 | 70.90 | 98,480 |
| 2015-03-26 | AMBA | Sale | 2,632 | 69.00 | 181,608 |
| 2015-03-27 | AMBA | Option Ex | 1,389 | 8.82 | 12,250 |
| 2015-03-20 | AMBA | Sale | 2,500 | 71.02 | 177,550 |
| 2015-03-17 | AMBA | Option Ex | 3,550 | .00 | 0 |
| 2015-03-17 | AMBA | Sale | 1,341 | 68.22 | 91,483 |
| 2015-03-19 | AMBA | Sale | 809 | 68.75 | 55,618 |
| 2015-03-16 | AMBA | Sale | 961 | 69.35 | 66,645 |
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.