Ju Chi-Hong
Officer · AMBA
As of 2026-09-16, Ju Chi-Hong has 28 Form 4 transactions on record across 1 company — 15 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Pattern in the record: open-market sales filed in June in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.
Reconstructed holdings
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-07-01 | AMBA | Sale | 10,000 @ $88.84 | $888K | −6.0% of holding | 155,924 | Form 4 |
| 2026-06-17 | AMBA | Sale | 2,017 @ $67.87 | $137K | −1.2% of holding | 165,924 | Form 4 |
| 2026-03-19 | AMBA | Sale | 2,155 @ $54.14 | $117K | −1.3% of holding | 167,941 | Form 4 |
| 2026-03-17 | AMBA | Sale | 4,729 @ $52.77 | $250K | −2.8% of holding | 164,166 | Form 4 |
| 2026-01-05 | AMBA | Sale | 7,728 @ $75.58 | $584K | −5.0% of holding | 146,039 | Form 4 |
| 2025-12-30 | AMBA | Sale | 3,765 @ $70.32 | $265K | −2.4% of holding | 153,767 | Form 4 |
| 2025-12-17 | AMBA | Sale | 1,342 @ $71.82 | $96K | −0.8% of holding | 157,532 | Form 4 |
| 2025-10-14 | AMBA | Sale | 6,156 @ $80.96 | $498K | −3.7% of holding | 158,874 | Form 4 |
| 2025-10-13 | AMBA | Sale | 5,057 @ $81.29 | $411K | −3.0% of holding | 165,030 | Form 4 |
| 2025-09-17 | AMBA | Sale | 1,168 @ $79.43 | $93K | −0.7% of holding | 170,087 | Form 4 |
| 2025-06-17 | AMBA | Sale | 1,108 @ $52.26 | $58K | −0.6% of holding | 171,032 | Form 4 |
| 2025-03-18 | AMBA | Sale | 1,034 @ $55.02 | $57K | −0.6% of holding | 172,140 | Form 4 |
| 2025-03-06 | AMBA | Sale | 1,859 @ $55.11 | $102K | −1.1% of holding | 172,940 | Form 4 |
| 2024-12-16 | AMBA | Sale | 1,048 @ $75.41 | $79K | −0.7% of holding | 157,638 | Form 4 |
| 2024-12-09 | AMBA | Sale | 3,000 @ $75.72 | $227K | −1.9% of holding | 158,686 | Form 4 |
| 2024-12-09 | AMBA | Sale | 2,118 @ $75.69 | $160K | −1.3% of holding | 161,686 | Form 4 |
12 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-03-18 | AMBA | Award / grant | 5,930 | 170,096 | Form 4 |
| 2026-03-17 | AMBA | Option exercise | 9,553 | 0 | Form 4 |
| 2026-03-17 | AMBA | Option exercise | 9,553 | 168,895 | Form 4 |
| 2026-03-17 | AMBA | Option exercise | 9,553 | 168,895 | Form 4 |
| 2026-03-02 | AMBA | Award / grant | 17,329 | 159,188 | Form 4 |
| 2026-03-02 | AMBA | Award / grant | 17,329 | 17,329 | Form 4 |
| 2025-03-05 | AMBA | Award / grant | 4,773 | 174,799 | Form 4 |
| 2025-02-28 | AMBA | Award / grant | 12,388 | 12,388 | Form 4 |
| 2025-02-28 | AMBA | Award / grant | 12,388 | 170,026 | Form 4 |
| 2024-12-09 | AMBA | Gift | 593 | 163,804 | Form 4 |
| 2024-12-04 | AMBA | Gift | 5,000 | 8,000 | Form 4 |
| 2024-12-04 | AMBA | Gift | 5,000 | 164,397 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.