SEC CIK 1182413

WALKER CLIFFORD

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

Current Positions

CompanyShares OwnedAs Of
POWIview stock →141,7652025-04-02

Position History — POWI

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

049,01398,026147,0392007-082010-112013-022016-112018-082022-022025-04

Recent Filings — POWI

DateActivitySharesPriceOwned After
2025-04-02Open-market sale1,088$50.89141,765
2025-02-11Open-market sale865$57.28142,853
2025-02-10Open-market sale1,131$58.01143,718
2025-02-07Grant / award2,704$0.00144,849
2025-02-04Open-market sale672$60.75143,945
2025-02-04Open-market sale675$60.75143,270
2025-02-04Open-market sale1,125$60.75142,145
2025-01-28Grant / award13,500$0.00144,434
2024-11-27Open-market sale10,000$64.36130,934
2024-11-26Gift65$0.00140,934
2024-04-02Open-market sale1,096$69.04140,834
2024-04-01Grant / award11,700$0.00141,930
2024-02-13Open-market sale620$75.23130,230
2024-02-12Open-market sale944$80.06129,209
2024-02-12Grant / award1,641$0.00130,850
2024-02-07Open-market sale666$74.04131,703
2024-02-07Open-market sale668$74.04131,035
2024-02-07Open-market sale882$74.04130,153
2023-08-31Open-market sale10,000$83.99132,237
2023-04-04Open-market sale1,545$81.85142,097
2023-02-14Open-market sale1,339$84.11143,642
2023-02-09Grant / award9,300$0.00144,981
2023-02-08Open-market sale485$85.08136,036
2023-02-08Open-market sale355$85.08135,681
2023-02-07Open-market sale897$83.00134,130
2023-02-07Grant / award1,380$0.00135,510
2023-02-07Grant / award1,011$0.00136,521
2023-02-03Open-market sale617$91.32135,027
2023-02-02Open-market sale620$89.86135,644
2022-04-04Open-market sale1,501$91.25135,957
2022-02-14Open-market sale1,874$83.91137,458
2022-02-14Open-market sale1,875$83.91139,332
2022-02-08Open-market sale2,145$85.34144,894
2022-02-08Open-market sale3,687$85.34141,207
2022-02-07Grant / award4,400$0.00137,039
2022-02-07Grant / award10,000$0.00147,039
2022-02-07Open-market sale819$83.74132,639
2022-02-02Grant / award7,200$0.00133,458
2022-02-02Open-market sale638$79.89126,258
2021-04-05Open-market sale1,510$84.38126,619
2021-02-17Open-market sale1,935$89.32128,129
2021-02-16Open-market sale1,834$94.13130,064
2021-02-08Open-market sale165$85.77131,898
2021-02-08Open-market sale2,235$85.77132,063
2021-02-05Open-market sale840$85.52127,968
2021-02-05Grant / award6,000$0.00133,968
2021-02-05Grant / award330$0.00134,298
2021-02-03Open-market sale1,503$81.49128,808
2021-02-01Grant / award6,300$0.00130,311
2020-04-02Open-market sale753$81.3361,775
2020-02-18Open-market sale8,000$103.1462,528
2020-02-14Open-market sale971$105.7170,528
2020-02-13Open-market sale655$108.6271,499
2020-02-07Open-market sale1,026$102.7572,154
2020-02-06Grant / award2,879$0.0073,180
2020-02-04Open-market sale286$100.9165,501
2020-02-04Grant / award4,800$0.0070,301
2020-01-28Open-market sale1,241$99.0165,649
2019-11-26Open-market sale5,000$93.7766,890
2019-07-30Open-market sale10,000$86.6271,702
2019-05-01Open-market sale10,000$78.7681,702
2019-05-01Gift440$0.0091,702
2019-04-02Open-market sale754$71.1192,142
2019-02-14Open-market sale651$70.0895,525
2019-02-14Open-market sale660$70.0892,896
2019-02-14Open-market sale1,969$70.0893,556
2019-02-13Grant / award5,598$0.0096,176
2019-02-13Grant / award1,320$0.0090,578
2019-02-12Open-market sale5,000$68.6281,758
2019-02-12Grant / award7,500$0.0089,258
2019-02-04Open-market sale655$66.1086,758
2019-01-28Open-market sale712$65.1888,125
2019-01-28Open-market sale888$65.1887,237
2018-11-05Open-market sale152$57.6288,672
2018-08-31Open-market sale1,984$72.4588,824
2018-04-02Open-market sale760$67.0890,808
2018-02-15Open-market sale2,642$63.2391,568
2018-02-13Grant / award7,500$0.0094,210
2018-02-05Open-market sale657$66.4186,536
2018-02-01Grant / award7,082$0.0087,193
2018-01-30Open-market sale530$76.4680,111
2018-01-29Open-market sale853$77.4980,641
2018-01-29Open-market sale703$77.4981,494
2017-11-03Open-market sale157$81.1182,197
2017-05-04Grant / award12,000$0.0082,354
2017-02-22Option exercise (derivative)2,504$0.000
2017-02-22Option exercise7,736$36.9578,090
2017-02-22Open-market sale2,504$66.0070,354
2017-02-22Option exercise2,504$42.8872,858
2017-02-21Option exercise (derivative)3,382$0.007,736
2017-02-21Option exercise (derivative)4,092$0.000
2017-02-21Option exercise3,382$36.9573,736
2017-02-21Option exercise4,092$42.8874,446
2017-02-21Open-market sale4,092$66.0070,354
2017-02-13Option exercise (derivative)800$0.004,092
2017-02-13Option exercise800$42.8871,154
2017-02-13Open-market sale800$67.0370,354
2017-02-10Option exercise (derivative)2,430$0.004,892
2017-02-10Option exercise2,430$42.8872,784
2017-02-10Open-market sale2,430$67.0470,354
2017-02-09Option exercise (derivative)12,000$0.000
2017-02-09Option exercise (derivative)2,174$0.007,322
2017-02-09Option exercise882$36.9571,236
2017-02-09Option exercise12,000$38.0782,354
2017-02-09Open-market sale2,174$67.5570,354
2017-02-09Option exercise2,174$42.8872,528
2017-02-02Grant / award7,500$0.0070,354
2017-02-02Open-market sale2,275$65.8662,854
2017-02-01Grant / award5,502$0.0065,129
2017-02-01Open-market sale560$71.1559,627
2017-01-30Open-market sale792$69.8959,750
2017-01-27Open-market sale848$71.6260,542
2017-01-24Open-market sale1,207$69.0461,390
2016-11-04Open-market sale157$63.3962,597
2016-11-03Option exercise (derivative)21,112$0.000
2016-11-03Open-market sale2,500$62.3862,754
2016-11-03Option exercise21,112$25.2583,866
2016-11-03Option exercise2,500$21.1465,254
2016-11-02Option exercise (derivative)1,434$0.0021,112
2016-11-02Option exercise1,434$25.2564,188
2016-11-02Open-market sale1,434$63.0062,754
2016-11-01Option exercise (derivative)12,454$0.0022,546
2016-11-01Option exercise12,454$25.2575,208
2016-11-01Open-market sale12,454$63.3462,754
2016-05-10Open-market sale567$46.4362,754
2016-02-05Open-market sale245$43.9963,321
2016-02-04Grant / award655$0.0063,566
2016-02-01Open-market sale555$46.2662,911
2016-01-28Open-market sale741$44.3562,813
2016-01-26Grant / award9,000$0.0063,554
2016-01-25Disposition to issuer1,257$44.1554,554
2015-11-04Open-market sale113$51.1655,811
2015-05-11Open-market sale565$50.0555,924
2015-05-06Open-market sale559$49.2456,489
2015-01-30Open-market sale569$53.4256,585
2015-01-27Grant / award8,100$0.0057,154
2015-01-23Open-market sale1,241$52.8749,054
2014-11-03Grant / award1,200$0.0050,295
2014-05-30Gift500$0.0049,095
2014-05-09Disposition to issuer789$49.0849,595
2014-05-06Disposition to issuer581$48.3550,384
2014-05-06Disposition to issuer564$48.3550,965
2014-02-06Option exercise (derivative)40,000$0.000
2014-02-06Option exercise40,000$26.7591,529
2014-02-06Open-market sale40,000$57.0551,529
2014-02-04Open-market sale1,910$60.2651,529
2014-02-03Grant / award5,312$0.0053,439
2014-01-29Grant / award6,000$0.0047,672
2014-01-23Open-market sale1,237$60.7341,672
2013-08-09Option exercise (derivative)7,954$0.000
2013-08-09Option exercise7,954$27.2250,863
2013-08-09Open-market sale7,954$52.5042,909
2013-08-07Option exercise (derivative)100$0.007,954
2013-08-07Open-market sale100$53.3042,909
2013-08-07Option exercise100$27.2243,009
2013-08-06Option exercise (derivative)33,273$0.008,054
2013-08-06Option exercise (derivative)3,673$0.000
2013-08-06Option exercise33,273$27.2276,182
2013-08-06Option exercise3,673$27.2246,582
2013-08-06Open-market sale3,673$53.5142,909
2013-05-09Open-market sale798$42.3542,523
2013-05-07Open-market sale793$42.3143,321
2013-05-06Open-market sale796$42.4444,114
2013-02-12Option exercise (derivative)13,710$0.002,500
2013-02-12Open-market sale13,710$43.2444,910
2013-02-12Option exercise13,710$21.1458,620
2013-02-11Option exercise (derivative)12,000$0.0016,210
2013-02-11Open-market sale12,000$43.0444,910
2013-02-11Option exercise12,000$21.1456,910
2013-02-08Open-market sale1,402$44.0744,910
2013-02-07Option exercise (derivative)11,790$0.0028,210
2013-02-07Open-market sale11,790$44.3246,312
2013-02-07Option exercise11,790$21.1458,102
2013-02-04Grant / award3,424$0.0046,312
2013-01-22Grant / award12,000$0.0042,382
2012-05-08Option exercise (derivative)50,000$0.000
2012-05-08Grant / award (derivative)9,496$0.009,496
2012-05-08Grant / award (derivative)2,504$0.002,504
2012-05-08Option exercise50,000$17.1880,469
2012-05-08Open-market sale50,000$42.8230,469
2012-05-08Open-market sale565$41.6029,904
2012-05-08Grant / award6,000$0.0030,469
2012-05-04Open-market sale485$42.7424,469
2012-02-28Option exercise (derivative)2,934$0.0020,504
2012-02-28Option exercise (derivative)20,504$0.000
2012-02-28Option exercise20,504$18.9545,458
2012-02-28Option exercise2,934$18.9527,888
2012-02-28Open-market sale2,934$38.5524,954
2012-02-07Option exercise (derivative)2,699$0.0018,863
2012-02-07Option exercise (derivative)18,863$0.000
2012-02-07Option exercise26,041$14.8250,995
2012-02-07Option exercise18,863$17.7543,817
2012-02-07Open-market sale2,699$38.1824,954
2012-02-07Option exercise2,699$17.7527,653
2011-11-08Option exercise (derivative)10,000$0.0026,041
2011-11-08Open-market sale10,000$36.1524,488
2011-11-08Option exercise10,000$14.8234,488
2011-08-31Option exercise (derivative)5,221$0.0040,820
2011-08-31Option exercise (derivative)4,779$0.0036,041
2011-08-31Option exercise4,779$14.8229,267
2011-08-31Open-market sale5,221$32.2224,488
2011-08-31Option exercise5,221$14.8229,709
2011-05-05Grant / award (derivative)11,118$0.0011,118
2011-05-05Grant / award (derivative)882$0.00882
2011-05-05Grant / award6,000$0.0024,260
2011-05-04Open-market sale551$37.4518,260
2011-02-10Open-market sale3,281$41.2018,811
2011-02-08Tax withholding3,119$41.5122,092
2011-01-25Grant / award6,400$0.0024,985
2010-11-22Option exercise (derivative)13,683$0.000
2010-11-22Option exercise13,683$12.1032,268
2010-11-22Open-market sale13,683$39.0518,585
2010-11-19Option exercise (derivative)920$0.0013,683
2010-11-19Open-market sale920$39.2518,585
2010-11-19Option exercise920$12.1019,505
2010-11-18Option exercise (derivative)9,348$0.0014,603
2010-11-18Option exercise (derivative)7,403$0.0023,951
2010-11-18Option exercise9,348$12.1027,933
2010-11-18Option exercise7,403$12.1025,988
2010-11-18Open-market sale9,348$39.3018,585
2010-11-01Open-market sale1,374$34.5018,585
2010-08-13Open-market sale3,200$31.3719,959
2010-05-03Grant / award (derivative)12,000$0.0012,000
2010-05-03Grant / award6,000$0.0022,914
2010-02-26Gift975$0.0016,914
2010-02-08Tax withholding3,026$32.8617,889
2010-01-26Grant / award8,000$0.0020,665
2009-08-21Option exercise (derivative)11,700$0.003,300
2009-08-21Option exercise (derivative)3,300$0.000
2009-08-21Option exercise11,700$15.0624,365
2009-08-21Option exercise3,300$15.0615,965
2009-08-21Open-market sale3,300$32.7012,665
2009-08-06Option exercise (derivative)6,639$0.000
2009-08-06Option exercise (derivative)8,361$0.0015,000
2009-08-06Option exercise8,361$15.0621,026
2009-08-06Open-market sale8,361$29.7912,665
2009-08-06Option exercise6,639$15.0619,304
2009-08-04Option exercise (derivative)600$0.0046,441
2009-08-04Option exercise (derivative)9,000$0.0047,041
2009-08-04Option exercise (derivative)400$0.0046,041
2009-08-04Option exercise400$14.8213,065
2009-08-04Option exercise9,000$14.8221,665
2009-08-04Option exercise600$14.8213,265
2009-08-04Open-market sale600$30.0112,665
2009-04-28Grant / award (derivative)40,000$0.0040,000
2008-12-31Disposition to issuer (derivative)32,000$4.000
2008-12-08Option exercise (derivative)6,891$0.0056,041
2008-12-08Open-market sale6,891$16.7511,468
2008-12-08Option exercise6,891$14.8218,359
2008-04-29Grant / award (derivative)32,000$0.0032,000
2008-02-21Option exercise (derivative)100$0.0062,932
2008-02-21Open-market sale100$27.5110,443
2008-02-21Option exercise100$14.8210,543
2007-12-07Option exercise100$14.8210,052
2007-12-07Option exercise968$14.8210,920
2007-12-07Option exercise300$14.8210,252
2007-12-07Open-market sale100$30.099,952
2007-12-07Option exercise (derivative)968$0.0064,032
2007-12-07Option exercise (derivative)100$0.0034,800
2007-12-07Option exercise (derivative)100$0.0034,700
2007-12-07Option exercise (derivative)200$0.0034,500
2007-12-07Option exercise (derivative)361$0.0034,139
2007-12-07Option exercise (derivative)39$0.0034,100
2007-12-07Option exercise (derivative)100$0.0034,000
2007-12-07Option exercise (derivative)300$0.0033,700
2007-12-07Option exercise (derivative)314$0.0033,386
2007-12-07Option exercise (derivative)269$0.0033,117
2007-12-07Option exercise (derivative)331$0.0032,786
2007-12-07Option exercise (derivative)200$0.0032,586
2007-12-07Option exercise (derivative)100$0.0032,486
2007-12-07Option exercise (derivative)400$0.0032,086
2007-12-07Option exercise (derivative)400$0.0031,686
2007-12-07Option exercise (derivative)332$0.0031,354
2007-12-07Option exercise (derivative)300$0.0063,732
2007-12-07Option exercise (derivative)100$0.0063,032
2007-12-07Option exercise (derivative)300$0.0063,132
2007-12-07Option exercise (derivative)300$0.0063,432
2007-12-07Option exercise331$12.1010,283
2007-12-07Option exercise269$12.1010,221
2007-12-07Option exercise314$12.1010,266
2007-12-07Option exercise300$12.1010,252
2007-12-07Option exercise39$12.109,991
2007-12-07Option exercise361$12.1010,313
2007-12-07Option exercise200$12.1010,152
2007-12-07Option exercise100$12.1010,052
2007-12-07Option exercise332$12.1010,284
2007-12-07Open-market sale400$29.959,952
2007-12-07Option exercise400$12.1010,352
2007-08-28Option exercise (derivative)100$26.868,164
2007-08-28Open-market sale100$26.869,952
2007-08-28Option exercise100$12.1010,052
2007-08-15Grant / award (derivative)35,000$0.0035,000
2006-12-21Grant / award (derivative)20,504—20,504
2006-12-21Disposition to issuer (derivative)2,934—2,699
2006-12-21Grant / award (derivative)2,934—2,934
2006-12-21Disposition to issuer (derivative)20,504—18,863
2006-02-07Grant / award (derivative)40,000$0.0040,000

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