SEC CIK 1558685

Day Christopher

Reported ownership across 1 company, sourced from SEC Form 4 filings and updated daily.

Current Positions

CompanyShares OwnedAs Of
AMBAview stock →15,0992025-06-17

Position History — AMBA

Reported shares owned immediately after each Form 4 transaction, over time.

022,32944,65966,9882013-042014-032015-062017-032020-032022-032025-032025-06

Recent Filings — AMBA

DateActivitySharesPriceOwned After
2025-06-17Open-market sale342$52.2615,099
2025-03-18Open-market sale479$55.0215,441
2025-03-06Open-market sale834$55.1115,686
2025-03-05Grant / award1,990$0.0016,520
2025-01-03Open-market sale1,247$78.1014,530
2024-12-18Open-market sale81$75.4116,625
2024-12-18Open-market sale848$75.4015,777
2024-12-16Open-market sale482$75.4116,706
2024-12-02Open-market sale1,278$71.6117,188
2024-10-03Open-market sale2,904$58.0018,466
2024-09-17Open-market sale483$53.5421,370
2024-07-08Open-market sale1,408$61.6621,599
2024-06-18Open-market sale487$55.4823,007
2024-03-18Open-market sale416$49.2723,494
2024-03-08Open-market sale302$57.1623,692
2024-03-07Grant / award726$0.0023,994
2024-02-29Grant / award (derivative)7,284$0.007,284
2024-02-29Grant / award7,284$0.0023,268
2023-12-19Open-market sale360$63.0415,984
2023-09-18Open-market sale351$57.3016,344
2023-07-12Open-market sale2,285$82.5016,532
2023-06-20Open-market sale354$84.8018,817
2023-06-15Grant / award8,340$0.0019,171
2023-06-13Open-market sale3,000$86.9410,831
2023-06-09Open-market sale4,286$82.9713,831
2023-04-13Open-market sale3,675$69.2418,117
2023-04-03Grant / award (derivative)4,377$0.004,377
2023-03-17Open-market sale2,420$76.8521,792
2023-03-15Option exercise (derivative)8,055$0.000
2023-03-15Option exercise (derivative)672$0.000
2023-03-15Option exercise (derivative)357$0.002,862
2023-03-15Option exercise (derivative)275$0.001,101
2023-03-15Option exercise6,925—24,212
2023-03-09Open-market sale358$82.2517,096
2023-03-08Grant / award867$0.0017,454
2023-03-02Grant / award (derivative)4,377$0.004,377
2022-12-20Open-market sale238$81.8216,587
2022-12-20Open-market sale2,214$81.5716,825
2022-12-16Option exercise (derivative)671$0.00672
2022-12-16Option exercise (derivative)275$0.001,376
2022-12-16Option exercise (derivative)358$0.003,219
2022-12-16Option exercise1,304—19,702
2022-12-16Open-market sale663$83.7719,039
2022-12-14Open-market sale2,000$90.8218,398
2022-12-14Open-market sale333$90.8220,398
2022-09-16Option exercise (derivative)276$0.001,651
2022-09-16Option exercise (derivative)671$0.001,343
2022-09-16Option exercise (derivative)358$0.003,577
2022-09-16Open-market sale670$63.2520,731
2022-09-16Option exercise1,305—21,401
2022-06-16Option exercise (derivative)357$0.003,935
2022-06-16Option exercise (derivative)275$0.001,927
2022-06-16Option exercise (derivative)671$0.002,014
2022-06-16Option exercise1,303—20,658
2022-06-16Open-market sale704$66.2719,954
2022-04-11Grant / award (derivative)4,292$0.004,292
2022-04-11Grant / award (derivative)4,292$0.004,292
2022-03-16Option exercise (derivative)8,011$0.000
2022-03-16Option exercise (derivative)275$0.002,202
2022-03-16Option exercise (derivative)672$0.002,685
2022-03-16Option exercise (derivative)668$0.000
2022-03-16Open-market sale7,405$91.2019,355
2022-03-16Option exercise17,637—26,760
2022-03-14Open-market sale713$84.429,042
2022-03-08Grant / award1,862$0.009,755
2021-12-27Open-market sale724$205.007,893
2021-12-16Option exercise (derivative)668$0.00668
2021-12-16Option exercise (derivative)671$0.003,357
2021-12-16Option exercise (derivative)275$0.002,477
2021-12-16Option exercise1,614—9,507
2021-12-16Open-market sale890$188.868,617
2021-12-07Open-market sale781$219.208,086
2021-12-07Open-market sale193$198.007,893
2021-12-07Open-market sale2,522$205.008,867
2021-12-03Open-market sale832$192.6911,389
2021-12-03Option exercise1,613—12,221
2021-09-16Option exercise (derivative)667$0.001,336
2021-09-16Option exercise (derivative)671$0.004,028
2021-09-16Option exercise (derivative)275$0.002,752
2021-06-29Open-market sale786$108.0010,500
2021-06-16Option exercise (derivative)1,212$0.000
2021-06-16Option exercise (derivative)275$0.003,027
2021-06-16Option exercise (derivative)668$0.002,003
2021-06-16Option exercise (derivative)671$0.004,699
2021-06-16Option exercise2,826—12,731
2021-06-16Open-market sale1,445$101.3911,286
2021-06-14Open-market sale1,412$105.009,905
2021-03-31Open-market sale285$99.8211,317
2021-03-17Open-market sale2,000$112.0014,187
2021-03-17Open-market sale2,585$108.0011,602
2021-03-16Option exercise (derivative)12,456$0.000
2021-03-16Option exercise (derivative)667$0.002,671
2021-03-16Option exercise (derivative)1,211$0.001,212
2021-03-16Option exercise (derivative)672$0.005,370
2021-03-16Open-market sale5,616$112.0016,187
2021-03-16Option exercise13,449—21,803
2021-03-11Open-market sale498$118.008,116
2021-03-09Open-market sale350$109.708,614
2021-03-09Grant / award848$0.008,964
2021-03-04Grant / award (derivative)3,302$0.003,302
2021-03-04Grant / award (derivative)3,302$0.003,302
2020-12-17Open-market sale1,642$89.688,116
2020-12-16Option exercise (derivative)1,211$0.002,423
2020-12-16Option exercise (derivative)668$0.003,338
2020-12-16Option exercise (derivative)671$0.006,042
2020-12-16Option exercise2,550—11,903
2020-12-16Open-market sale908$90.2510,995
2020-12-16Open-market sale1,237$91.309,758
2020-12-08Option exercise (derivative)1,300$0.000
2020-12-08Open-market sale1,300$90.539,353
2020-12-08Option exercise1,300$38.9210,653
2020-11-30Option exercise (derivative)1,000$0.001,300
2020-11-30Option exercise1,000$38.9210,720
2020-11-30Open-market sale1,367$78.009,353
2020-09-29Open-market sale899$52.009,720
2020-09-16Option exercise (derivative)671$0.006,713
2020-09-16Option exercise (derivative)668$0.004,006
2020-09-16Option exercise (derivative)1,211$0.003,634
2020-09-16Option exercise2,550—11,515
2020-09-16Open-market sale896$53.1810,619
2020-06-30Open-market sale1,267$45.928,632
2020-06-16Option exercise (derivative)1,211$0.004,845
2020-06-16Option exercise (derivative)667$0.004,674
2020-06-16Option exercise (derivative)671$0.007,384
2020-06-16Option exercise2,549—10,794
2020-06-16Open-market sale895$52.139,899
2020-03-31Open-market sale976$49.758,245
2020-03-27Open-market sale804$47.819,221
2020-03-27Grant / award2,216$0.0010,025
2020-03-25Grant / award (derivative)8,055$0.008,055
2020-03-25Grant / award (derivative)8,055$0.008,055
2020-03-17Option exercise (derivative)668$0.005,341
2020-03-17Option exercise (derivative)1,211$0.006,056
2020-03-17Option exercise (derivative)3,758$0.000
2020-03-17Open-market sale2,113$38.997,809
2020-03-17Option exercise4,698—9,922
2019-12-20Open-market sale1,033$57.935,031
2019-12-17Option exercise (derivative)667$0.006,009
2019-12-17Option exercise (derivative)1,211$0.007,267
2019-12-17Option exercise1,878—6,705
2019-12-17Open-market sale641$56.316,064
2019-09-30Option exercise (derivative)1,000$0.002,300
2019-09-30Option exercise1,000$38.928,305
2019-09-30Open-market sale3,478$62.824,827
2019-09-17Option exercise (derivative)668$0.006,676
2019-09-17Option exercise (derivative)877$0.000
2019-09-17Option exercise (derivative)1,211$0.008,478
2019-09-17Option exercise2,756—8,653
2019-09-17Open-market sale1,348$64.147,305
2019-09-16Open-market sale2,587$64.905,897
2019-09-04Open-market sale405$58.728,199
2019-06-24Open-market sale2,490$43.988,604
2019-06-18Option exercise (derivative)667$0.007,344
2019-06-18Option exercise (derivative)877$0.00877
2019-06-18Option exercise (derivative)1,211$0.009,689
2019-06-18Open-market sale1,335$43.0611,094
2019-06-18Option exercise2,755—12,429
2019-03-29Open-market sale1,886$43.109,674
2019-03-19Option exercise (derivative)877$0.001,754
2019-03-19Option exercise (derivative)1,211$0.0010,900
2019-03-19Open-market sale1,226$43.4811,560
2019-03-19Option exercise2,088—12,786
2019-03-18Open-market sale2,474$43.1010,698
2019-03-08Open-market sale4,442$40.5412,827
2019-03-07Grant / award (derivative)8,011$0.008,011
2019-03-07Grant / award (derivative)8,011$0.008,011
2019-03-04Grant / award (derivative)12,456$0.0012,456
2018-12-18Option exercise (derivative)877$0.002,631
2018-12-18Option exercise (derivative)1,211$0.0012,111
2018-12-18Open-market sale1,126$38.0017,269
2018-12-18Option exercise2,088—18,395
2018-12-04Open-market sale1,798$41.3516,307
2018-09-19Open-market sale1,533$35.5118,105
2018-09-18Option exercise (derivative)1,211$0.0013,322
2018-09-18Option exercise (derivative)963$0.000
2018-09-18Option exercise (derivative)877$0.003,508
2018-09-18Option exercise3,051—19,638
2018-09-06Open-market sale1,326$39.7716,353
2018-06-22Open-market sale3,062$44.0017,679
2018-06-19Open-market sale2,277$44.0020,741
2018-06-18Option exercise (derivative)877$0.004,385
2018-06-18Option exercise (derivative)962$0.00963
2018-06-18Open-market sale1,023$43.2723,018
2018-06-18Option exercise1,839—24,041
2018-06-07Grant / award (derivative)14,533$0.0014,533
2018-03-16Option exercise (derivative)877$0.005,262
2018-03-16Option exercise (derivative)963$0.001,925
2018-03-16Option exercise1,840—23,214
2018-03-16Open-market sale1,012$53.0722,202
2018-02-26Grant / award (derivative)3,758$0.003,758
2017-12-18Option exercise (derivative)962$0.002,888
2017-12-18Option exercise (derivative)877$0.006,139
2017-12-18Option exercise1,839—22,216
2017-12-18Open-market sale1,111$57.6921,105
2017-09-29Open-market sale2,618$49.1520,377
2017-09-18Option exercise (derivative)963$0.003,850
2017-09-18Option exercise (derivative)877$0.007,016
2017-09-18Option exercise (derivative)1,094$0.000
2017-09-18Option exercise2,934—24,524
2017-09-18Open-market sale1,529$46.5022,995
2017-06-16Option exercise (derivative)876$0.007,893
2017-06-16Option exercise (derivative)962$0.004,813
2017-06-16Option exercise (derivative)1,094$0.001,094
2017-06-16Open-market sale1,526$48.7721,366
2017-06-16Option exercise2,932—22,892
2017-03-31Open-market sale2,109$55.5019,960
2017-03-28Grant / award (derivative)8,769$0.008,769
2017-03-16Option exercise (derivative)1,094$0.002,188
2017-03-16Option exercise (derivative)963$0.005,775
2017-03-16Option exercise2,057—23,262
2017-03-16Open-market sale1,193$56.1922,069
2017-03-13Option exercise (derivative)1,071$0.000
2017-03-13Option exercise1,071$9.9922,095
2017-03-13Open-market sale1,071$55.5021,024
2016-12-16Option exercise (derivative)962$0.006,738
2016-12-16Option exercise (derivative)1,093$0.003,282
2016-12-16Option exercise2,055—22,705
2016-12-16Open-market sale1,656$54.2121,049
2016-09-29Option exercise (derivative)1,000$0.001,071
2016-09-29Option exercise (derivative)1,063$0.003,300
2016-09-29Open-market sale4,272$69.3220,650
2016-09-29Option exercise1,063$38.9223,922
2016-09-29Option exercise1,000$9.9924,922
2016-09-28Option exercise (derivative)2,000$0.002,071
2016-09-28Option exercise (derivative)1,000$0.004,363
2016-09-28Option exercise2,000$9.9925,402
2016-09-28Option exercise1,000$38.9226,402
2016-09-28Open-market sale3,543$68.6422,859
2016-09-27Option exercise (derivative)926$0.000
2016-09-27Open-market sale2,595$67.1823,402
2016-09-27Option exercise926$8.8225,997
2016-09-21Option exercise (derivative)2,000$0.004,071
2016-09-21Open-market sale2,000$67.0025,071
2016-09-21Option exercise2,000$9.9927,071
2016-09-16Option exercise (derivative)1,094$0.004,375
2016-09-16Option exercise (derivative)963$0.007,700
2016-09-16Option exercise (derivative)556$0.000
2016-09-16Open-market sale1,405$67.9825,071
2016-09-16Option exercise2,613—26,476
2016-06-30Open-market sale1,173$50.8523,532
2016-06-16Option exercise (derivative)1,094$0.005,469
2016-06-16Option exercise (derivative)962$0.008,663
2016-06-16Option exercise (derivative)556$0.00556
2016-06-16Open-market sale1,405$51.9724,705
2016-06-16Option exercise2,612—26,110
2016-03-29Open-market sale1,812$43.5023,498
2016-03-16Option exercise (derivative)963$0.009,625
2016-03-16Option exercise (derivative)938$0.000
2016-03-16Option exercise (derivative)1,094$0.006,563
2016-03-16Option exercise (derivative)555$0.001,112
2016-03-16Option exercise3,550—26,785
2016-03-16Open-market sale1,475$37.1225,310
2016-03-07Grant / award10,693$0.0023,060
2015-12-21Open-market sale894$58.5012,397
2015-12-17Open-market sale776$58.5013,291
2015-12-16Option exercise (derivative)556$0.001,667
2015-12-16Option exercise (derivative)962$0.0010,588
2015-12-16Option exercise (derivative)937$0.00938
2015-12-16Option exercise (derivative)1,093$0.007,657
2015-12-16Open-market sale2,041$56.9714,067
2015-12-16Option exercise3,548—16,108
2015-12-10Open-market sale261$59.2512,560
2015-12-08Open-market sale515$56.5012,821
2015-10-08Grant / award4,891$0.0013,336
2015-09-30Open-market sale1,010$58.168,445
2015-09-16Option exercise (derivative)555$0.002,223
2015-09-16Option exercise (derivative)963$0.0011,550
2015-09-16Option exercise (derivative)1,094$0.008,750
2015-09-16Option exercise (derivative)938$0.001,875
2015-09-16Option exercise3,550—11,335
2015-09-16Open-market sale1,880$70.809,455
2015-06-18Open-market sale2,084$125.007,605
2015-06-17Option exercise (derivative)1,237$0.005,363
2015-06-17Option exercise1,237$38.9212,147
2015-06-17Open-market sale1,237$122.0010,910
2015-06-17Open-market sale1,221$120.009,689
2015-06-16Option exercise (derivative)556$0.002,778
2015-06-16Option exercise (derivative)937$0.002,813
2015-06-16Option exercise (derivative)1,094$0.009,844
2015-06-16Option exercise (derivative)962$0.0012,513
2015-06-16Option exercise3,549—12,673
2015-06-16Open-market sale1,763$117.6010,910
2015-06-10Option exercise (derivative)1,000$0.006,071
2015-06-10Option exercise1,000$9.9910,124
2015-06-10Open-market sale1,000$115.009,124
2015-06-05Option exercise (derivative)1,389$0.00926
2015-06-05Option exercise1,389$8.8210,513
2015-06-05Open-market sale1,389$102.009,124
2015-03-31Option exercise (derivative)1,000$0.007,071
2015-03-31Option exercise1,000$9.9910,124
2015-03-31Open-market sale1,000$75.509,124
2015-03-30Option exercise (derivative)1,000$0.008,071
2015-03-30Open-market sale1,000$74.009,124
2015-03-30Option exercise1,000$9.9910,124
2015-03-27Option exercise (derivative)1,389$0.002,315
2015-03-27Option exercise1,389$8.8210,513
2015-03-27Open-market sale1,389$70.909,124
2015-03-26Open-market sale2,632$69.009,124
2015-03-20Open-market sale2,500$71.0211,756
2015-03-19Open-market sale809$68.7514,256
2015-03-17Option exercise (derivative)963$0.0013,475
2015-03-17Option exercise (derivative)938$0.003,750
2015-03-17Option exercise (derivative)1,094$0.0010,938
2015-03-17Option exercise (derivative)555$0.003,334
2015-03-17Option exercise3,550$0.0016,406
2015-03-17Open-market sale1,341$68.2215,065
2015-03-16Open-market sale961$69.3512,856
2015-03-11Option exercise (derivative)2,000$0.009,071
2015-03-11Open-market sale2,000$67.9513,454
2015-03-11Option exercise2,000$9.9915,454
2014-12-30Option exercise (derivative)2,000$0.0011,071
2014-12-30Option exercise2,000$9.9915,454
2014-12-30Open-market sale2,000$54.9013,454
2014-12-26Option exercise (derivative)2,593$0.003,704
2014-12-26Open-market sale2,593$52.7513,454
2014-12-26Option exercise2,593$8.8216,047
2014-12-22Open-market sale3,756$48.7513,454
2014-12-18Open-market sale1,016$48.1817,210
2014-12-16Option exercise (derivative)962$0.0014,438
2014-12-16Option exercise (derivative)1,093$0.0012,032
2014-12-16Option exercise (derivative)556$0.003,889
2014-12-16Option exercise (derivative)937$0.004,688
2014-12-16Open-market sale1,879$46.1518,226
2014-12-16Option exercise3,548—20,105
2014-09-29Option exercise (derivative)1,297$0.000
2014-09-29Open-market sale1,297$42.5035,491
2014-09-29Option exercise1,297$8.8236,788
2014-09-23Option exercise (derivative)2,500$0.006,297
2014-09-23Option exercise2,500$8.8237,991
2014-09-23Open-market sale2,500$41.9035,491
2014-09-18Open-market sale4,347$39.7331,144
2014-09-16Option exercise (derivative)556$0.004,445
2014-09-16Option exercise (derivative)938$0.005,625
2014-09-16Option exercise1,494—36,876
2014-09-16Open-market sale1,385$33.6635,491
2014-09-08Grant / award (derivative)6,600$0.006,600
2014-09-08Grant / award (derivative)15,400$0.0015,400
2014-06-20Open-market sale1,462$29.5033,545
2014-06-16Option exercise (derivative)937$0.006,563
2014-06-16Option exercise (derivative)555$0.005,001
2014-06-16Option exercise1,492—36,372
2014-06-16Open-market sale1,365$26.5535,007
2014-04-01Option exercise (derivative)2,084$0.000
2014-04-01Option exercise2,084$8.6434,880
2014-03-19Option exercise (derivative)5,132$0.002,084
2014-03-19Option exercise5,132$8.6432,796
2014-03-18Option exercise (derivative)556$0.005,556
2014-03-18Option exercise556—27,544
2014-03-18Open-market sale689$28.0027,664
2014-03-05Grant / award (derivative)7,500$0.007,500
2014-01-02Option exercise (derivative)7,591$0.001,297
2014-01-02Option exercise (derivative)13,425$0.008,797
2014-01-02Option exercise (derivative)4,706$0.0013,071
2014-01-02Option exercise (derivative)14,278$0.007,216
2014-01-02Open-market sale4,369$33.6526,988
2014-01-02Open-market sale35,631$32.9631,357
2014-01-02Option exercise4,706$9.9966,988
2014-01-02Option exercise21,016$8.8262,282
2014-01-02Option exercise14,278$8.6441,266
2013-12-19Option exercise (derivative)3,756$0.0021,494
2013-12-19Option exercise3,756$8.6426,988
2013-12-17Option exercise (derivative)555$0.006,112
2013-12-17Option exercise555—23,864
2013-12-17Open-market sale632$24.4323,232
2013-10-17Option exercise (derivative)10,000$0.0025,250
2013-10-17Open-market sale10,000$21.9823,309
2013-10-17Option exercise10,000$8.6433,309
2013-10-01Option exercise (derivative)10,000$0.0035,250
2013-10-01Open-market sale10,000$20.5023,309
2013-10-01Option exercise10,000$8.6433,309
2013-09-25Option exercise (derivative)10,000$0.0045,250
2013-09-25Open-market sale10,000$18.8023,309
2013-09-25Option exercise10,000$8.6433,309
2013-09-16Option exercise (derivative)1,200$0.0055,250
2013-09-16Option exercise1,200$8.6420,162
2013-09-16Open-market sale1,200$18.1318,962
2013-09-16Option exercise (derivative)556$0.006,667
2013-09-16Option exercise556—19,518
2013-09-16Open-market sale212$17.8023,309
2013-09-13Option exercise (derivative)400$0.0056,450
2013-09-13Option exercise400$8.6419,362
2013-09-13Open-market sale400$17.9518,962
2013-09-12Option exercise (derivative)1,300$0.0056,850
2013-09-12Open-market sale1,300$17.9618,962
2013-09-12Option exercise1,300$8.6420,262
2013-09-11Option exercise (derivative)390$0.0058,150
2013-09-11Open-market sale390$17.9518,962
2013-09-11Option exercise390$8.6419,352
2013-09-10Option exercise (derivative)16,710$0.0058,540
2013-09-10Option exercise16,710$8.6435,672
2013-09-10Open-market sale16,710$17.9018,962
2013-08-27Grant / award17,500$0.0018,962
2013-06-28Option exercise (derivative)4,750$0.0075,250
2013-06-28Option exercise4,750$8.646,212
2013-06-28Open-market sale4,750$16.501,462
2013-06-18Open-market sale204$18.291,462
2013-06-17Option exercise (derivative)555$0.007,223
2013-06-17Option exercise555—1,666
2013-06-11Option exercise (derivative)5,000$0.0080,000
2013-06-11Option exercise5,000$8.646,111
2013-06-11Open-market sale5,000$17.951,111
2013-06-10Option exercise (derivative)15,000$0.0085,000
2013-06-10Open-market sale5,000$17.251,111
2013-06-10Open-market sale10,000$16.766,111
2013-06-10Option exercise15,000$8.6416,111
2013-04-08Option exercise (derivative)1,111$0.007,778
2013-04-08Option exercise1,111—1,111

Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.