SEC Form 4 · Updated Daily
IMOS
— ChipMOS TECHNOLOGIES INC. OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| Cheng Shih Jye | Director · Officer | 6,244,777 | 2026-03-16 | — |
| Su Yu-Chiao | Director · Officer | 830,000 | 2026-03-13 | — |
| Tsai Teng-Yueh | Officer | 820,000 | 2026-03-13 | — |
| Hsu Yuan-Feng | Officer | 230,130 | 2026-03-13 | — |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-03-16 | Cheng Shih Jye | — | — | — | 1,000,000 |
| 2026-03-16 | Cheng Shih Jye | — | — | — | 5,160,161 |
| 2026-03-16 | Cheng Shih Jye | — | — | — | 6,244,777 |
| 2026-03-13 | Hsu Yuan-Feng | — | — | — | 230,130 |
| 2026-03-13 | Su Yu-Chiao | — | — | — | 346,101 |
| 2026-03-13 | Su Yu-Chiao | — | — | — | 830,000 |
| 2026-03-13 | Tsai Teng-Yueh | — | — | — | 272,572 |
| 2026-03-13 | Tsai Teng-Yueh | — | — | — | 820,000 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.