SEC CIK 1511393
Chang Mike F
Reported ownership across 1 company, sourced from SEC Form 4 filings and updated daily.
Current Positions
| Company | Shares Owned | As Of |
|---|---|---|
| AOSLview stock → | 3,698,839 | 2026-08-24 |
Position History — AOSL
Reported shares owned immediately after each Form 4 transaction, over time.
Recent Filings — AOSL
| Date | Activity | Shares | Price | Owned After |
|---|---|---|---|---|
| 2026-08-24 | Gift | 100,947 | $0.00 | 3,698,839 |
| 2026-08-13 | Gift | 3,000,000 | $0.00 | 560,540 |
| 2026-07-13 | Gift | 23,754 | $0.00 | 3,560,540 |
| 2026-06-01 | Gift | 30,000 | $0.00 | 3,584,294 |
| 2026-05-26 | Gift | 39,780 | $0.00 | 3,614,294 |
| 2026-05-22 | Gift | 736,252 | $0.00 | 3,654,074 |
| 2026-03-16 | Grant / award | 22,500 | $0.00 | 4,386,761 |
| 2026-03-16 | Tax withholding | 9,829 | $21.43 | 4,364,261 |
| 2026-03-16 | Tax withholding | 17,984 | $21.43 | 4,374,090 |
| 2026-03-16 | Grant / award | 22,500 | $0.00 | 4,392,074 |
| 2026-03-16 | Grant / award | 22,500 | $0.00 | 4,390,326 |
| 2026-03-16 | Tax withholding | 14,419 | $21.43 | 4,355,155 |
| 2026-03-09 | Open-market buy | 33,727 | $19.00 | 4,369,574 |
| 2026-01-02 | Tax withholding | 16,700 | $20.66 | 4,335,847 |
| 2025-10-20 | Gift | 40,000 | $0.00 | 4,352,547 |
| 2025-03-17 | Tax withholding | 27,296 | $27.61 | 4,375,574 |
| 2025-03-17 | Grant / award | 22,500 | $0.00 | 4,402,870 |
| 2025-03-17 | Tax withholding | 20,527 | $27.61 | 4,355,047 |
| 2025-03-17 | Grant / award | 37,500 | $0.00 | 4,392,547 |
| 2025-01-02 | Tax withholding | 22,446 | $36.54 | 4,380,370 |
| 2024-12-03 | Gift | 30,000 | $0.00 | 4,402,816 |
| 2024-08-28 | Gift | 10,000 | $0.00 | 4,432,816 |
| 2024-05-10 | Gift | 30,000 | $0.00 | 4,442,816 |
| 2024-03-15 | Grant / award | 37,500 | $0.00 | 4,527,786 |
| 2024-03-15 | Tax withholding | 30,803 | $21.55 | 4,496,983 |
| 2024-03-15 | Tax withholding | 24,167 | $21.55 | 4,472,816 |
| 2024-01-29 | Option exercise (derivative) | 30,000 | $0.00 | 0 |
| 2024-01-29 | Option exercise | 30,000 | $7.44 | 4,530,286 |
| 2024-01-29 | Open-market sale | 30,000 | $26.91 | 4,500,286 |
| 2024-01-02 | Grant / award | 180,000 | $0.00 | 4,517,591 |
| 2024-01-02 | Tax withholding | 17,305 | $27.38 | 4,500,286 |
| 2023-12-28 | Option exercise (derivative) | 30,000 | $0.00 | 30,000 |
| 2023-12-28 | Open-market sale | 30,000 | $26.53 | 4,337,591 |
| 2023-12-28 | Option exercise | 30,000 | $7.44 | 4,367,591 |
| 2023-12-14 | Option exercise (derivative) | 30,000 | $0.00 | 60,000 |
| 2023-12-14 | Option exercise | 30,000 | $7.44 | 4,367,591 |
| 2023-12-14 | Open-market sale | 30,000 | $25.00 | 4,337,591 |
| 2023-10-26 | Option exercise (derivative) | 0 | $0.00 | 90,000 |
| 2023-10-26 | Option exercise | 30,000 | $7.44 | 4,367,591 |
| 2023-10-26 | Open-market sale | 30,000 | $25.03 | 4,337,591 |
| 2023-09-26 | Option exercise (derivative) | 30,000 | $0.00 | 120,000 |
| 2023-09-26 | Option exercise | 30,000 | $7.44 | 4,367,591 |
| 2023-09-26 | Open-market sale | 30,000 | $28.64 | 4,337,591 |
| 2023-09-14 | Gift | 50,000 | $0.00 | 4,337,591 |
| 2023-09-06 | Gift | 10,000 | $0.00 | 4,490,286 |
| 2023-09-01 | Option exercise (derivative) | 30,000 | $0.00 | 150,000 |
| 2023-09-01 | Option exercise | 30,000 | $7.44 | 4,417,591 |
| 2023-09-01 | Open-market sale | 30,000 | $31.01 | 4,387,591 |
| 2023-03-15 | Grant / award | 54,180 | $0.00 | 4,387,591 |
| 2023-03-15 | Tax withholding | 32,229 | $25.45 | 4,357,481 |
| 2023-03-15 | Grant / award | 37,500 | $0.00 | 4,389,710 |
| 2023-03-15 | Tax withholding | 24,070 | $25.45 | 4,333,411 |
| 2023-01-09 | Option exercise (derivative) | 56,400 | $0.00 | 0 |
| 2023-01-09 | Option exercise | 56,400 | $8.45 | 4,408,610 |
| 2023-01-09 | Open-market sale | 56,400 | $29.96 | 4,352,210 |
| 2022-03-22 | Gift | 20,000 | $0.00 | 4,352,210 |
| 2022-03-22 | Gift | 20,000 | $0.00 | 4,372,210 |
| 2022-03-17 | Option exercise (derivative) | 56,400 | $0.00 | 0 |
| 2022-03-17 | Option exercise | 56,400 | $9.90 | 4,448,610 |
| 2022-03-17 | Open-market sale | 56,400 | $55.00 | 4,392,210 |
| 2022-03-15 | Grant / award | 22,500 | $0.00 | 4,322,210 |
| 2022-03-15 | Grant / award | 70,000 | $0.00 | 4,392,210 |
| 2022-03-15 | Tax withholding | 24,908 | $48.65 | 4,299,710 |
| 2022-03-15 | Grant / award | 70,000 | $0.00 | 4,353,826 |
| 2022-03-15 | Tax withholding | 29,208 | $48.65 | 4,324,618 |
| 2021-11-10 | Gift | 10,000 | $0.00 | 4,283,826 |
| 2021-11-10 | Gift | 20,000 | $0.00 | 4,293,826 |
| 2021-03-15 | Tax withholding | 22,238 | $36.27 | 4,232,151 |
| 2021-03-15 | Tax withholding | 29,208 | $36.27 | 4,254,389 |
| 2021-03-15 | Grant / award | 70,000 | $0.00 | 4,283,597 |
| 2021-03-15 | Grant / award | 14,175 | $0.00 | 4,246,326 |
| 2021-03-15 | Grant / award | 22,500 | $0.00 | 4,268,826 |
| 2021-02-25 | Grant / award | 70,000 | $0.00 | 4,338,826 |
| 2021-01-29 | Gift | 25,000 | $0.00 | 4,313,826 |
| 2021-01-12 | Open-market sale | 20,000 | $28.89 | 4,213,597 |
| 2021-01-11 | Open-market sale | 5,434 | $28.00 | 4,233,597 |
| 2021-01-08 | Open-market sale | 6,979 | $28.23 | 4,239,031 |
| 2021-01-07 | Open-market sale | 29,143 | $28.43 | 4,246,010 |
| 2021-01-06 | Open-market sale | 88,444 | $28.05 | 4,275,153 |
| 2020-12-03 | Gift | 15,000 | $0.00 | 4,363,597 |
| 2020-12-02 | Gift | 50,000 | $0.00 | 4,378,597 |
| 2020-10-05 | Option exercise (derivative) | 94,000 | $0.00 | 0 |
| 2020-10-05 | Option exercise | 94,000 | $12.68 | 4,522,597 |
| 2020-10-05 | Open-market sale | 94,000 | $15.50 | 4,428,597 |
| 2020-03-16 | Grant / award | 70,000 | $0.00 | 4,391,922 |
| 2020-03-16 | Tax withholding | 18,921 | $7.36 | 4,321,922 |
| 2020-03-16 | Tax withholding | 12,705 | $7.36 | 4,340,843 |
| 2020-03-16 | Grant / award | 14,175 | $0.00 | 4,406,097 |
| 2020-03-16 | Grant / award | 22,500 | $0.00 | 4,428,597 |
| 2019-03-15 | Tax withholding | 15,418 | $11.18 | 4,319,990 |
| 2019-03-15 | Grant / award | 50,000 | $0.00 | 4,353,548 |
| 2019-03-15 | Tax withholding | 16,442 | $11.18 | 4,303,548 |
| 2019-02-27 | Grant / award | 22,500 | $0.00 | 4,335,408 |
| 2019-02-27 | Grant / award | 14,175 | $0.00 | 4,312,908 |
| 2019-02-27 | Grant / award | 25,536 | $0.00 | 4,298,733 |
| 2019-01-03 | Open-market buy | 480 | $9.99 | 4,273,197 |
| 2018-12-27 | Open-market buy | 12,656 | $9.82 | 4,272,717 |
| 2018-12-26 | Open-market buy | 11,900 | $9.94 | 4,260,061 |
| 2018-12-24 | Open-market buy | 13,115 | $9.82 | 4,248,161 |
| 2018-12-21 | Open-market buy | 22,618 | $9.84 | 4,235,046 |
| 2018-12-20 | Open-market buy | 8,700 | $9.98 | 4,212,428 |
| 2018-12-19 | Open-market buy | 23,202 | $9.94 | 4,203,728 |
| 2018-12-17 | Open-market buy | 17,050 | $9.99 | 4,180,526 |
| 2018-12-11 | Open-market buy | 800 | $10.00 | 4,163,476 |
| 2018-12-10 | Open-market buy | 24,775 | $9.96 | 4,162,676 |
| 2018-12-07 | Open-market buy | 9,630 | $9.85 | 4,137,901 |
| 2018-12-06 | Open-market buy | 2,000 | $10.00 | 4,128,271 |
| 2018-11-20 | Open-market buy | 3,930 | $10.00 | 4,126,271 |
| 2018-03-15 | Option exercise (derivative) | 15,750 | $0.00 | 47,250 |
| 2018-03-15 | Grant / award (derivative) | 90,000 | $0.00 | 90,000 |
| 2018-03-15 | Tax withholding | 4,697 | $16.22 | 4,085,951 |
| 2018-03-15 | Tax withholding | 13,610 | $16.22 | 4,072,341 |
| 2018-03-15 | Grant / award | 50,000 | $0.00 | 4,122,341 |
| 2018-03-15 | Option exercise | 14,175 | $0.00 | 4,090,648 |
| 2018-03-12 | Grant / award | 26,916 | $0.00 | 4,076,473 |
| 2017-03-15 | Grant / award (derivative) | 63,000 | $0.00 | 63,000 |
| 2017-03-15 | Tax withholding | 8,785 | $17.58 | 3,979,557 |
| 2017-03-15 | Grant / award | 70,000 | $0.00 | 4,049,557 |
| 2017-02-14 | Tax withholding | 1,373 | $21.48 | 3,988,342 |
| 2016-12-13 | Open-market sale | 24,117 | $22.10 | 3,989,715 |
| 2016-12-12 | Open-market sale | 25,883 | $22.19 | 4,013,832 |
| 2016-11-21 | Gift | 10,000 | $0.00 | 4,039,715 |
| 2016-11-14 | Open-market sale | 21,123 | $21.00 | 4,049,715 |
| 2016-11-11 | Open-market sale | 28,877 | $21.00 | 4,070,838 |
| 2016-10-10 | Open-market sale | 50,000 | $22.64 | 4,099,715 |
| 2016-09-28 | Gift | 50,000 | $0.00 | 4,149,715 |
| 2016-09-19 | Gift | 50,000 | $0.00 | 4,199,715 |
| 2016-04-26 | Tax withholding | 97 | $13.65 | 4,249,715 |
| 2016-03-28 | Tax withholding | 288 | $10.80 | 4,249,812 |
| 2016-03-15 | Tax withholding | 5,172 | $11.70 | 4,210,609 |
| 2016-03-15 | Grant / award | 39,491 | $0.00 | 4,250,100 |
| 2016-02-16 | Tax withholding | 1,372 | $11.34 | 4,215,781 |
| 2015-12-28 | Tax withholding | 288 | $9.39 | 4,217,153 |
| 2015-09-28 | Tax withholding | 289 | $7.88 | 4,217,441 |
| 2015-06-26 | Tax withholding | 288 | $8.97 | 4,217,730 |
| 2015-03-26 | Tax withholding | 288 | $8.70 | 4,218,018 |
| 2015-03-16 | Grant / award | 39,000 | $0.00 | 4,218,306 |
| 2015-03-16 | Tax withholding | 1,440 | $8.90 | 4,179,306 |
| 2015-02-14 | Tax withholding | 1,372 | $9.05 | 4,180,746 |
| 2014-12-29 | Tax withholding | 288 | $9.10 | 4,182,118 |
| 2014-09-26 | Tax withholding | 289 | $9.59 | 4,182,406 |
| 2014-06-26 | Tax withholding | 288 | $9.27 | 4,182,695 |
| 2014-03-26 | Tax withholding | 298 | $7.21 | 4,182,983 |
| 2014-03-17 | Grant / award (derivative) | 180,000 | $0.00 | 180,000 |
| 2014-03-17 | Grant / award | 15,000 | $0.00 | 4,183,281 |
| 2014-02-14 | Tax withholding | 1,375 | $7.25 | 4,168,281 |
| 2013-12-26 | Tax withholding | 296 | $8.14 | 4,169,656 |
| 2013-09-26 | Tax withholding | 295 | $8.56 | 4,169,952 |
| 2013-06-26 | Tax withholding | 292 | $7.65 | 4,170,247 |
| 2013-03-26 | Tax withholding | 345 | $8.98 | 4,170,539 |
| 2013-02-14 | Grant / award (derivative) | 56,400 | $0.00 | 56,400 |
| 2013-02-14 | Grant / award | 12,533 | $0.00 | 4,170,884 |
| 2012-12-31 | Tax withholding | 288 | $8.40 | 4,158,351 |
| 2012-09-26 | Tax withholding | 192 | $8.72 | 4,158,639 |
| 2012-07-26 | Tax withholding | 288 | $7.81 | 4,158,831 |
| 2012-04-26 | Grant / award (derivative) | 56,400 | $0.00 | 56,400 |
| 2012-04-26 | Grant / award | 12,533 | $0.00 | 4,158,244 |
| 2011-07-01 | — | — | — | 4,144,836 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.