SEC CIK 1611157
Zhang Jack Y.
Reported ownership across 1 company, sourced from SEC Form 4 filings and updated daily.
Current Positions
| Company | Shares Owned | As Of |
|---|---|---|
| AMPHview stock → | 1,245,125 | 2026-03-15 |
Position History — AMPH
Reported shares owned immediately after each Form 4 transaction, over time.
Recent Filings — AMPH
| Date | Activity | Shares | Price | Owned After |
|---|---|---|---|---|
| 2026-03-15 | Tax withholding | 2,908 | $18.18 | 1,245,125 |
| 2026-03-15 | Tax withholding | 9,784 | $18.18 | 2,990,052 |
| 2026-03-10 | Tax withholding | 4,395 | $18.91 | 1,248,033 |
| 2026-03-10 | Tax withholding | 14,785 | $18.91 | 2,999,836 |
| 2026-03-09 | Grant / award (derivative) | 149,472 | $0.00 | 149,472 |
| 2026-03-09 | Grant / award (derivative) | 372,338 | $0.00 | 372,338 |
| 2026-03-09 | Grant / award | 72,462 | $0.00 | 1,252,428 |
| 2026-03-09 | Grant / award | 180,504 | $0.00 | 3,014,621 |
| 2026-03-06 | Tax withholding | 3,077 | $19.34 | 1,179,966 |
| 2026-03-06 | Tax withholding | 7,773 | $19.34 | 2,834,117 |
| 2026-03-04 | Tax withholding | 2,432 | $19.96 | 1,183,043 |
| 2026-03-04 | Tax withholding | 5,769 | $19.96 | 2,841,890 |
| 2025-06-13 | Option exercise (derivative) | 200,000 | $0.00 | 205,003 |
| 2025-06-13 | Option exercise | 200,000 | $13.03 | 2,847,659 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.