Chi-Hong Ju insider trades: Ambarella (AMBA) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Chi-Hong reports to the SEC
Open-market buys and sales
38 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Sep 17, 2026 | AMBA | ↓ Sell | 2,009 | $64.83 | $130K | Direct | Sep 18, 2026 (1d) |
| Jul 1, 2026 | AMBA | ↓ Sell | 10,000 | $88.84 | $888K | Direct | Jul 2, 2026 (1d) |
| Jun 17, 2026 | AMBA | ↓ Sell | 2,017 | $67.87 | $137K | Direct | Jun 18, 2026 (1d) |
| Jan 5, 2026 | AMBA | ↓ Sell | 7,728 | $75.58 | $584K | Direct | Jan 7, 2026 (2d) |
| Dec 30, 2025 | AMBA | ↓ Sell | 7,945 | $70.25 | $558K | Direct | Jan 23, 2026 (24d) |
| Dec 30, 2025 | AMBA | ↓ Sell | 3,765 | $70.32 | $265K | Direct | Dec 31, 2025 (1d) |
| Dec 17, 2025 | AMBA | ↓ Sell | 1,342 | $71.82 | $96K | Direct | Dec 19, 2025 (2d) |
| Oct 14, 2025 | AMBA | ↓ Sell | 11,213 | $81.11 | $909K | Direct | Oct 15, 2025 (1d) |
| Sep 17, 2025 | AMBA | ↓ Sell | 1,168 | $79.43 | $93K | Direct | Sep 19, 2025 (2d) |
| Jun 17, 2025 | AMBA | ↓ Sell | 1,108 | $52.26 | $58K | Direct | Jun 20, 2025 (3d) |
| Mar 18, 2025 | AMBA | ↓ Sell | 1,034 | $55.02 | $57K | Direct | Mar 20, 2025 (2d) |
| Mar 6, 2025 | AMBA | ↓ Sell | 1,859 | $55.11 | $102K | Direct | Mar 7, 2025 (1d) |
| Dec 16, 2024 | AMBA | ↓ Sell | 1,048 | $75.41 | $79K | Direct | Dec 18, 2024 (2d) |
| Dec 9, 2024 | AMBA | ↓ Sell | 5,118 | $75.71 | $387K | Direct | Dec 10, 2024 (1d) |
| Sep 17, 2024 | AMBA | ↓ Sell | 1,050 | $53.54 | $56K | Direct | Sep 19, 2024 (2d) |
| Jun 26, 2024 | AMBA | ↓ Sell | 6,000 | $52.90 | $317K | Direct | Jun 27, 2024 (1d) |
| Jun 21, 2024 | AMBA | ↓ Sell | 8,900 | $55.53 | $494K | Direct | Jun 24, 2024 (3d) |
| Jun 18, 2024 | AMBA | ↓ Sell | 1,059 | $55.48 | $59K | Direct | Jun 20, 2024 (2d) |
| Jun 10, 2024 | AMBA | ↓ Sell | 4,191 | $57.11 | $239K | Direct | Jun 11, 2024 (1d) |
| Mar 18, 2024 | AMBA | ↓ Sell | 778 | $49.27 | $38K | Direct | Mar 20, 2024 (2d) |
| Mar 8, 2024 | AMBA | ↓ Sell | 509 | $57.16 | $29K | Direct | Mar 11, 2024 (3d) |
| Dec 19, 2023 | AMBA | ↓ Sell | 1,074 | $63.04 | $68K | Direct | Dec 21, 2023 (2d) |
| Sep 18, 2023 | AMBA | ↓ Sell | 1,048 | $57.30 | $60K | Direct | Sep 20, 2023 (2d) |
| Jul 7, 2023 | AMBA | ↓ Sell | 4,251 | $81.81 | $348K | Direct | Jul 10, 2023 (3d) |
| Jun 20, 2023 | AMBA | ↓ Sell | 1,015 | $84.80 | $86K | Direct | Jun 20, 2023 (0d) |
| Jun 8, 2023 | AMBA | ↓ Sell | 4,165 | $82.62 | $344K | Direct | Jun 9, 2023 (1d) |
| Mar 17, 2023 | AMBA | ↓ Sell | 4,402 | $76.85 | $338K | Direct | Mar 17, 2023 (0d) |
| Dec 22, 2022 | AMBA | ↓ Sell | 2,000 | $81.16 | $162K | Direct | Dec 22, 2022 (0d) |
| Dec 19, 2022 | AMBA | ↓ Sell | 2,026 | $82.52 | $167K | Direct | Dec 20, 2022 (1d) |
| Sep 16, 2022 | AMBA | ↓ Sell | 1,272 | $63.25 | $80K | Direct | Sep 20, 2022 (4d) |
| Jun 16, 2022 | AMBA | ↓ Sell | 1,340 | $66.26 | $89K | Direct | Jun 17, 2022 (1d) |
| Mar 16, 2022 | AMBA | ↓ Sell | 14,598 | $91.20 | $1.3M | Direct | Mar 18, 2022 (2d) |
| Mar 14, 2022 | AMBA | ↓ Sell | 1,315 | $84.42 | $111K | Direct | Mar 14, 2022 (0d) |
| Dec 30, 2021 | AMBA | ↓ Sell | 536 | $206.11 | $110K | Direct | Jan 3, 2022 (4d) |
| Dec 27, 2021 | AMBA | ↓ Sell | 402 | $209.97 | $84K | Direct | Dec 28, 2021 (1d) |
| Dec 16, 2021 | AMBA | ↓ Sell | 1,595 | $188.90 | $301K | Direct | Dec 17, 2021 (1d) |
| Dec 7, 2021 | AMBA | ↓ Sell | 1,000 | $221.90 | $222K | Direct | Jan 5, 2022 (29d) |
| Dec 3, 2021 | AMBA | ↓ Sell | 1,495 | $192.69 | $288K | Direct | Dec 7, 2021 (4d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other AMBA insiders
Open-market trades in the last 12 months
About Chi-Hong Ju's insider trades
Chi-Hong Ju is Senior VP, Systems & GM at Ambarella (AMBA). Since Dec 3, 2021, Chi-Hong has reported no open-market purchases and 38 sales worth $9.8M on SEC Form 4. In the last 12 months: 7 sales ($2.7M).
Their filings also include grants and awards (9 filings), option exercises (9 filings), gifts (2 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every AMBA insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.