Zhou Rong
Insider transactions at 1 company
This page shows all SEC Form 4 filings attributed to Zhou Rong. Form 4 disclosures are required whenever a corporate insider — director, officer, or 10%+ shareholder — buys, sells, or receives company stock. Each row represents a separate reported transaction. All data is sourced directly from the SEC EDGAR public database.
| Company | Title | Type | Shares | Price | Value | Date |
|---|---|---|---|---|---|---|
| AMPH | SENIOR EVP, PRODUCTION CENTER | Sale | 9,787 | $26.20 | $256,419 | Dec 17, 2025 |
| AMPH | SENIOR EVP, PRODUCTION CENTER | Tax Withholding | 1,222 | $26.66 | $32,579 | Mar 17, 2025 |
| AMPH | SENIOR EVP, PRODUCTION CENTER | Award / Grant | 24,692 | — | — | Mar 10, 2025 |
| AMPH | SENIOR EVP, PRODUCTION CENTER | Tax Withholding | 1,354 | $28.32 | $38,345 | Mar 6, 2025 |
| AMPH | SENIOR EVP, PRODUCTION CENTER | Tax Withholding | 1,121 | $27.62 | $30,962 | Mar 4, 2025 |
| AMPH | SENIOR EVP, PRODUCTION CENTER | Sale | 7,000 | $44.43 | $311,010 | Dec 13, 2024 |
| AMPH | SENIOR EVP, PRODUCTION CENTER | Option Exercise | 6,893 | $14.95 | $103,050 | Nov 12, 2024 |
| AMPH | SENIOR EVP, PRODUCTION CENTER | Sale | 3,000 | $48.26 | $144,780 | Sep 13, 2024 |
| AMPH | SENIOR EVP, PRODUCTION CENTER | Sale | 4,000 | $48.35 | $193,400 | Aug 26, 2024 |
| AMPH | SENIOR EVP, PRODUCTION CENTER | Tax Withholding | 2,355 | $43.05 | $101,383 | Mar 17, 2024 |
| AMPH | SENIOR EVP, PRODUCTION CENTER | Tax Withholding | 1,390 | $46.31 | $64,371 | Mar 6, 2024 |
| AMPH | SENIOR EVP, PRODUCTION CENTER | Award / Grant | 12,521 | — | — | Mar 4, 2024 |
| AMPH | Senior EVP, Production Center | Sale | 4,316 | $58.58 | $252,831 | Dec 1, 2023 |
| AMPH | EVP, Production Center | Option Exercise | 9,651 | $11.33 | $109,346 | Jun 20, 2023 |
| AMPH | EVP, Production Center | Option Exercise | 4,631 | $14.95 | $69,233 | Jun 15, 2023 |
| AMPH | EVP, Production Center | Option Exercise | 5,000 | $14.40 | $72,000 | Jun 13, 2023 |
| AMPH | EVP, Production Center | Sale | 10,000 | $44.21 | $442,100 | May 18, 2023 |
| AMPH | EVP, Production Center | Tax Withholding | 2,283 | $37.60 | $85,841 | Mar 17, 2023 |
| AMPH | EVP, Production Center | Tax Withholding | 2,057 | $36.84 | $75,780 | Mar 15, 2023 |
| AMPH | EVP, Production Center | Award / Grant | 15,129 | — | — | Mar 6, 2023 |
| AMPH | EVP, Production Center | Tax Withholding | 2,447 | $34.18 | $83,638 | Mar 16, 2022 |
| AMPH | EVP, Production Center | Award / Grant | 13,658 | — | — | Mar 15, 2022 |
| AMPH | EVP, Production Center | Sale | 13,246 | $28.77 | $381,087 | Feb 25, 2022 |
| AMPH | EVP, Production Center | Sale | 7,000 | $26.77 | $187,390 | Feb 8, 2022 |
| AMPH | EVP, Production Center | Sale | 10,251 | $25.77 | $264,168 | Jan 10, 2022 |
| AMPH | EVP, Production Center | Sale | 7,813 | $21.67 | $169,308 | Nov 11, 2021 |
| AMPH | EVP, Production Center | Sale | 9,123 | $21.24 | $193,773 | Aug 2, 2021 |
| AMPH | EVP, Production Center | Option Exercise | 6,000 | $10.48 | $62,880 | Jul 26, 2021 |
| AMPH | EVP, Production Center | Sale | 5,187 | $20.57 | $106,697 | Jul 20, 2021 |
| AMPH | EVP, Production Center | Option Exercise | 8,180 | $14.23 | $116,401 | Jun 9, 2021 |
| AMPH | EVP, Production Center | Option Exercise | 700 | $14.23 | $9,961 | May 14, 2021 |
| AMPH | EVP, Production Center | Tax Withholding | 3,303 | $18.44 | $60,907 | Mar 17, 2021 |
| AMPH | EVP, Production Center | Tax Withholding | 1,652 | $19.15 | $31,636 | Mar 15, 2021 |
| AMPH | EVP, Production Center | Option Exercise | 8,918 | $11.41 | $101,754 | Jun 4, 2020 |
| AMPH | EVP, Production Center | Award / Grant | 26,400 | — | — | Mar 16, 2020 |
| AMPH | EVP, Production Center | Tax Withholding | 1,653 | $14.19 | $23,456 | Mar 15, 2020 |
| AMPH | EVP, Production Center | Tax Withholding | 204 | $19.82 | $4,043 | Jun 14, 2019 |
| AMPH | EVP, Production Center | Option Exercise | 9,600 | $20.26 | $194,496 | May 6, 2019 |
| AMPH | EVP, Production Center | Tax Withholding | 814 | $20.54 | $16,720 | Mar 26, 2019 |
| AMPH | EVP, Production Center | Tax Withholding | 1,179 | $20.23 | $23,851 | Mar 15, 2019 |
| AMPH | EVP, Production Center | Sale | 3,200 | $25.00 | $80,000 | Mar 1, 2019 |
| AMPH | EVP, Production Center | Option Exercise | 3,200 | $20.26 | $64,832 | Feb 5, 2019 |
| AMPH | EVP, Production Center | Sale | 1,089 | $22.00 | $23,958 | Dec 3, 2018 |
| AMPH | EVP, Production Center | Sale | 1,089 | $21.00 | $22,869 | Nov 8, 2018 |
| AMPH | EVP, Production Center | Tax Withholding | 134 | $16.88 | $2,262 | Jun 15, 2018 |
| AMPH | EVP, Production Center | Tax Withholding | 535 | $18.61 | $9,956 | Mar 26, 2018 |
| AMPH | EVP, Production Center | Tax Withholding | 1,128 | $19.91 | $22,458 | Mar 17, 2018 |
| AMPH | EVP, Production Center | Award / Grant | 8,969 | — | — | Mar 15, 2018 |
| AMPH | EVP, Production Center | Tax Withholding | 146 | $16.18 | $2,362 | Jun 15, 2017 |
| AMPH | EVP, Production Center | Tax Withholding | 568 | $13.76 | $7,816 | Mar 26, 2017 |