SEC CIK 1721580
Wang David H
Reported ownership across 1 company, sourced from SEC Form 4 filings and updated daily.
Current Positions
| Company | Shares Owned | As Of |
|---|---|---|
| ACMRview stock → | 802,708 | 2026-09-09 |
Position History — ACMR
Reported shares owned immediately after each Form 4 transaction, over time.
Recent Filings — ACMR
| Date | Activity | Shares | Price | Owned After |
|---|---|---|---|---|
| 2026-09-09 | Option exercise (derivative) | 70,000 | $0.00 | 130,000 |
| 2026-09-09 | Open-market sale | 1,100 | $77.59 | 802,708 |
| 2026-09-09 | Open-market sale | 4,807 | $76.73 | 803,808 |
| 2026-09-09 | Open-market sale | 11,666 | $75.58 | 808,615 |
| 2026-09-09 | Open-market sale | 18,934 | $74.67 | 820,281 |
| 2026-09-09 | Open-market sale | 33,493 | $73.80 | 839,215 |
| 2026-09-09 | Option exercise | 70,000 | $1.00 | 872,708 |
| 2026-09-08 | Option exercise (derivative) | 70,000 | $0.00 | 200,000 |
| 2026-09-08 | Open-market sale | 1,500 | $78.57 | 802,708 |
| 2026-09-08 | Open-market sale | 12,323 | $78.08 | 804,208 |
| 2026-09-08 | Open-market sale | 51,374 | $77.15 | 816,531 |
| 2026-09-08 | Open-market sale | 4,803 | $75.99 | 867,905 |
| 2026-09-08 | Option exercise | 70,000 | $1.00 | 872,708 |
| 2026-06-04 | Option exercise (derivative) | 40,002 | $0.00 | 270,000 |
| 2026-06-04 | Open-market sale | 826 | $87.91 | 802,708 |
| 2026-06-04 | Open-market sale | 8,581 | $87.13 | 803,534 |
| 2026-06-04 | Open-market sale | 10,992 | $86.07 | 812,115 |
| 2026-06-04 | Open-market sale | 17,543 | $85.11 | 823,107 |
| 2026-06-04 | Open-market sale | 2,060 | $83.86 | 840,650 |
| 2026-06-04 | Option exercise | 40,002 | $1.00 | 842,710 |
| 2026-06-03 | Option exercise (derivative) | 60,000 | $0.00 | 310,002 |
| 2026-06-03 | Open-market sale | 1,187 | $93.04 | 802,708 |
| 2026-06-03 | Open-market sale | 5,843 | $92.38 | 803,895 |
| 2026-06-03 | Open-market sale | 9,925 | $90.78 | 809,738 |
| 2026-06-03 | Open-market sale | 32,450 | $89.84 | 819,663 |
| 2026-06-03 | Open-market sale | 6,295 | $88.98 | 852,113 |
| 2026-06-03 | Open-market sale | 4,300 | $87.57 | 858,408 |
| 2026-06-03 | Option exercise | 60,000 | $1.00 | 862,708 |
| 2026-05-13 | Grant / award (derivative) | 6,208 | $0.00 | 6,208 |
| 2026-03-12 | Option exercise (derivative) | 50,000 | $0.00 | 370,002 |
| 2026-03-12 | Open-market sale | 702 | $46.57 | 802,708 |
| 2026-03-12 | Open-market sale | 38,737 | $45.74 | 803,410 |
| 2026-03-12 | Open-market sale | 10,561 | $44.92 | 842,147 |
| 2026-03-12 | Option exercise | 50,000 | $1.00 | 852,708 |
| 2026-03-11 | Option exercise (derivative) | 60,000 | $0.00 | 420,002 |
| 2026-03-11 | Open-market sale | 4,627 | $48.34 | 802,708 |
| 2026-03-11 | Open-market sale | 55,373 | $47.89 | 807,335 |
| 2026-03-11 | Option exercise | 60,000 | $1.00 | 862,708 |
| 2026-02-04 | Grant / award (derivative) | 545,400 | $0.00 | 1,636,197 |
| 2025-12-04 | Option exercise (derivative) | 60,000 | $0.00 | 480,002 |
| 2025-12-04 | Open-market sale | 40,183 | $34.42 | 802,708 |
| 2025-12-04 | Open-market sale | 19,817 | $33.52 | 842,891 |
| 2025-12-04 | Option exercise | 60,000 | $1.00 | 862,708 |
| 2025-12-03 | Option exercise (derivative) | 70,000 | $0.00 | 540,002 |
| 2025-12-03 | Open-market sale | 1,200 | $33.56 | 802,708 |
| 2025-12-03 | Open-market sale | 68,800 | $33.05 | 803,908 |
| 2025-12-03 | Option exercise | 70,000 | $1.00 | 872,708 |
| 2025-10-27 | Grant / award (derivative) | 545,400 | $0.00 | 545,400 |
| 2025-09-08 | Option exercise (derivative) | 130,000 | $0.00 | 610,002 |
| 2025-09-08 | Option exercise | 130,000 | $1.00 | 802,708 |
| 2025-09-04 | Option exercise (derivative) | 60,000 | $0.00 | 740,002 |
| 2025-09-04 | Open-market sale | 60,000 | $26.44 | 672,708 |
| 2025-09-04 | Option exercise | 60,000 | $1.00 | 732,708 |
| 2025-09-03 | Option exercise (derivative) | 70,000 | $0.00 | 800,002 |
| 2025-09-03 | Open-market sale | 3,943 | $27.31 | 672,708 |
| 2025-09-03 | Open-market sale | 66,057 | $26.73 | 676,651 |
| 2025-09-03 | Option exercise | 70,000 | $1.00 | 742,708 |
| 2025-05-22 | Option exercise (derivative) | 60,000 | $0.00 | 870,002 |
| 2025-05-22 | Open-market sale | 60,000 | $22.63 | 672,708 |
| 2025-05-22 | Option exercise | 60,000 | $1.00 | 732,708 |
| 2025-05-21 | Option exercise (derivative) | 70,000 | $0.00 | 930,002 |
| 2025-05-21 | Open-market sale | 8 | $24.04 | 672,708 |
| 2025-05-21 | Open-market sale | 69,992 | $23.60 | 672,716 |
| 2025-05-21 | Option exercise | 70,000 | $1.00 | 742,708 |
| 2025-03-13 | Open-market sale | 1,019 | $27.65 | 672,708 |
| 2025-03-13 | Open-market sale | 36,481 | $27.29 | 673,727 |
| 2025-03-12 | Open-market sale | 37,500 | $27.42 | 710,208 |
| 2025-03-11 | Open-market sale | 56,250 | $26.57 | 747,708 |
| 2025-03-03 | Option exercise (derivative) | 210,000 | $0.00 | 0 |
| 2025-03-03 | Tax withholding | 4,048 | $25.94 | 803,958 |
| 2025-03-03 | Option exercise | 210,000 | $0.50 | 808,006 |
| 2024-11-29 | Open-market sale | 56,250 | $17.44 | 598,006 |
| 2024-11-26 | Open-market sale | 46,766 | $17.80 | 663,740 |
| 2024-11-26 | Open-market sale | 9,484 | $18.31 | 654,256 |
| 2024-11-22 | Open-market sale | 56,250 | $19.08 | 710,506 |
| 2024-11-14 | Option exercise (derivative) | 270,000 | $0.00 | 210,000 |
| 2024-11-14 | Tax withholding | 7,262 | $18.59 | 766,756 |
| 2024-11-14 | Option exercise | 270,000 | $0.50 | 774,018 |
| 2024-05-29 | Open-market sale | 41,090 | $22.62 | 504,018 |
| 2024-05-29 | Open-market sale | 45,000 | $22.62 | 545,108 |
| 2024-05-22 | Open-market sale | 45,000 | $22.81 | 635,108 |
| 2024-05-22 | Open-market sale | 45,000 | $22.81 | 590,108 |
| 2024-05-14 | Option exercise (derivative) | 180,000 | $0.00 | 480,000 |
| 2024-05-14 | Option exercise | 180,000 | $0.50 | 684,018 |
| 2024-05-14 | Tax withholding | 3,910 | $23.02 | 680,108 |
| 2024-03-14 | Open-market sale | 76,478 | $27.51 | 514,629 |
| 2024-03-14 | Open-market sale | 10,611 | $28.38 | 504,018 |
| 2024-03-08 | Open-market sale | 45,000 | $30.36 | 636,107 |
| 2024-03-08 | Open-market sale | 45,000 | $30.35 | 591,107 |
| 2024-03-01 | Option exercise (derivative) | 180,000 | $0.00 | 660,000 |
| 2024-03-01 | Option exercise | 180,000 | $0.50 | 684,018 |
| 2024-03-01 | Tax withholding | 2,911 | $30.92 | 681,107 |
| 2023-11-29 | Open-market sale | 39,776 | $17.13 | 504,018 |
| 2023-11-29 | Open-market sale | 45,000 | $17.14 | 543,794 |
| 2023-11-22 | Open-market sale | 45,000 | $17.67 | 633,794 |
| 2023-11-22 | Open-market sale | 45,000 | $17.68 | 588,794 |
| 2023-11-14 | Option exercise (derivative) | 180,000 | $0.00 | 840,000 |
| 2023-11-14 | Option exercise | 180,000 | $0.50 | 684,018 |
| 2023-11-14 | Tax withholding | 5,224 | $17.23 | 678,794 |
| 2023-09-13 | Open-market sale | 85,116 | $17.68 | 504,018 |
| 2023-09-12 | Open-market sale | 3,573 | $18.72 | 589,134 |
| 2023-09-12 | Open-market sale | 86,427 | $18.03 | 592,707 |
| 2023-09-04 | Option exercise (derivative) | 180,000 | $0.00 | 1,020,000 |
| 2023-09-04 | Tax withholding | 4,884 | $18.43 | 679,134 |
| 2023-09-04 | Option exercise | 180,000 | $0.50 | 684,018 |
| 2023-08-10 | Grant / award (derivative) | 1,080,000 | $0.00 | 1,080,000 |
| 2023-08-10 | Grant / award (derivative) | 1,080,000 | $0.00 | 1,080,000 |
| 2021-03-19 | Open-market sale | 49,228 | $90.55 | 168,006 |
| 2021-03-18 | Open-market sale | 50,000 | $91.92 | 217,234 |
| 2021-03-12 | Option exercise (derivative) | 100,001 | $0.00 | 0 |
| 2021-03-12 | Tax withholding | 773 | $97.05 | 267,234 |
| 2021-03-12 | Option exercise | 100,001 | $0.75 | 268,007 |
| 2020-12-04 | Open-market sale | 49,322 | $77.14 | 168,006 |
| 2020-12-03 | Open-market sale | 32,995 | $82.50 | 217,328 |
| 2020-12-03 | Open-market sale | 16,666 | $82.50 | 250,323 |
| 2020-11-25 | Option exercise (derivative) | 66,666 | $0.00 | 100,001 |
| 2020-11-25 | Option exercise (derivative) | 33,334 | $0.00 | 0 |
| 2020-11-25 | Tax withholding | 339 | $73.76 | 201,001 |
| 2020-11-25 | Option exercise | 66,666 | $0.75 | 267,667 |
| 2020-11-25 | Tax withholding | 678 | $73.76 | 266,989 |
| 2020-11-25 | Option exercise | 33,334 | $0.75 | 201,340 |
| 2020-09-04 | Open-market sale | 49,453 | $80.08 | 168,006 |
| 2020-09-03 | Open-market sale | 20,000 | $84.53 | 217,459 |
| 2020-08-27 | Option exercise (derivative) | 70,000 | $0.00 | 33,334 |
| 2020-08-27 | Tax withholding | 547 | $96.05 | 237,459 |
| 2020-08-27 | Option exercise | 70,000 | $0.75 | 238,006 |
| 2020-08-05 | Grant / award (derivative) | 181,799 | $0.00 | 181,799 |
| 2020-05-21 | Conversion (derivative) | 33,334 | $0.00 | 0 |
| 2020-05-21 | Conversion | 33,334 | $0.00 | 33,334 |
| 2019-08-23 | Disposition to issuer | 28,661 | $13.20 | 168,006 |
| 2019-08-20 | Option exercise (derivative) | 30,000 | $0.00 | 103,334 |
| 2019-08-20 | Option exercise | 30,000 | $0.75 | 196,667 |
| 2019-04-23 | Grant / award (derivative) | 50,000 | $0.00 | 50,000 |
| 2018-06-29 | Option exercise (derivative) | 15,279 | $0.00 | 0 |
| 2018-06-29 | Option exercise | 15,279 | $3.00 | 15,279 |
| 2017-11-02 | — | — | — | 117,334 |
| 2017-11-02 | — | — | — | 117,334 |
| 2017-11-02 | — | — | — | 33,334 |
| 2017-11-02 | — | — | — | 1,146,934 |
| 2017-11-02 | — | — | — | 206,667 |
| 2017-11-02 | — | — | — | 166,667 |
| 2017-11-02 | — | — | — | 7,334 |
| 2017-11-02 | — | — | — | 60,000 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.