AMBA
AMBARELLA INC
Semiconductors & Related DevicesNasdaqLarge accelerated filer
Total Trades
185
Buys
1
Sells
136
Largest Trade
N/A
Insiders
12
Institutional Funds
271
Inst. Value
$1M+
Activist Filings
6
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Wang Feng-Ming | CEO | GRANT | N/A | 53K | — | Mar 4, 2026 |
| Wang Feng-Ming | CEO | SELL | $1M+ | 50K | $60.80 | Mar 4, 2026 |
| Wang Feng-Ming | CEO | EXERCISE | $1M+ | 50K | $41.36 | Mar 4, 2026 |
| Ju Chi-Hong | Senior VP | SELL | $500K+ | 8K | $75.58 | Jan 7, 2026 |
| Ju Chi-Hong | Senior VP | SELL | $100K–$500K | 4K | $70.32 | Dec 31, 2025 |
| PAISLEY CHRISTOPHER B | Director | SELL | $15K–$50K | 500 | $72.18 | Dec 29, 2025 |
| Young John Alexander | CFO | SELL | $100K–$500K | 6K | $72.50 | Dec 19, 2025 |
| Lee Chan W | Chief Operations O… | SELL | $100K–$500K | 2K | $71.82 | Dec 19, 2025 |
| Ju Chi-Hong | Senior VP | SELL | $50K–$100K | 1K | $71.82 | Dec 19, 2025 |
| Wang Feng-Ming | CEO | SELL | $100K–$500K | 5K | $71.82 | Dec 19, 2025 |
| Schwarting Elizabeth M | Director | SELL | $15K–$50K | 624 | $72.38 | Dec 18, 2025 |
| Young John Alexander | CFO | SELL | $100K–$500K | 3K | $79.43 | Sep 19, 2025 |
| Lee Chan W | COO | SELL | $100K–$500K | 2K | $79.43 | Sep 19, 2025 |
| Kohn Leslie | CTO | SELL | $100K–$500K | 2K | $79.43 | Sep 19, 2025 |
| Ju Chi-Hong | Sr. Vice President | SELL | $50K–$100K | 1K | $79.43 | Sep 19, 2025 |
| Wang Feng-Ming | CEO | SELL | $100K–$500K | 5K | $79.43 | Sep 19, 2025 |
| Chen Yun-Lung | VP | SELL | $500K+ | 8K | $84.42 | Sep 12, 2025 |
| PAISLEY CHRISTOPHER B | Director | SELL | $50K–$100K | 1K | $62.58 | Jun 27, 2025 |
| Young John Alexander | CFO | SELL | $100K–$500K | 2K | $52.26 | Jun 20, 2025 |
| Day Christopher | VP, Marketing | SELL | $15K–$50K | 342 | $52.26 | Jun 20, 2025 |
| Lee Chan W | COO | SELL | $50K–$100K | 2K | $52.26 | Jun 20, 2025 |
| Kohn Leslie | CTO | SELL | $50K–$100K | 2K | $52.26 | Jun 20, 2025 |
| Ju Chi-Hong | Sr. Vice President | SELL | $50K–$100K | 1K | $52.26 | Jun 20, 2025 |
| Wang Feng-Ming | CEO | SELL | $100K–$500K | 5K | $52.26 | Jun 20, 2025 |
| PAISLEY CHRISTOPHER B | Director | SELL | $15K–$50K | 500 | $55.50 | Mar 26, 2025 |
| Young John Alexander | CFO | SELL | $100K–$500K | 2K | $55.02 | Mar 20, 2025 |
| Day Christopher | VP, Marketing | SELL | $15K–$50K | 479 | $55.02 | Mar 20, 2025 |
| Lee Chan W | COO | SELL | $50K–$100K | 1K | $55.02 | Mar 20, 2025 |
| Kohn Leslie | CTO | SELL | $50K–$100K | 2K | $55.02 | Mar 20, 2025 |
| Ju Chi-Hong | Sr. Vice President | SELL | $50K–$100K | 1K | $55.02 | Mar 20, 2025 |
| Wang Feng-Ming | CEO | SELL | $100K–$500K | 3K | $55.02 | Mar 20, 2025 |
| Lee Chan W | COO | SELL | $100K–$500K | 2K | $76.56 | Jan 17, 2025 |
| Lee Chan W | COO | SELL | $100K–$500K | 3K | $74.43 | Jan 14, 2025 |
| Lee Chan W | COO | SELL | $100K–$500K | 3K | $77.12 | Jan 9, 2025 |
| Day Christopher | VP, Marketing | SELL | $50K–$100K | 1K | $78.10 | Jan 7, 2025 |
| Lee Chan W | COO | SELL | $100K–$500K | 2K | $74.19 | Jan 3, 2025 |
| PAISLEY CHRISTOPHER B | Director | SELL | $100K–$500K | 2K | $73.80 | Dec 27, 2024 |
| Schwarting Elizabeth M | Director | SELL | $15K–$50K | 253 | $71.55 | Dec 20, 2024 |
| Day Christopher | VP, Marketing | SELL | $50K–$100K | 929 | $75.40 | Dec 20, 2024 |
| Day Christopher | VP, Marketing | SELL | $50K–$100K | 1K | $71.61 | Dec 3, 2024 |
| Day Christopher | VP, Marketing | SELL | $100K–$500K | 3K | $58.00 | Oct 4, 2024 |
| PAISLEY CHRISTOPHER B | Director | SELL | $15K–$50K | 500 | $53.71 | Sep 26, 2024 |
| Schwarting Elizabeth M | Director | SELL | $15K–$50K | 913 | $54.74 | Sep 25, 2024 |
| Ju Chi-Hong | Sr. Vice President | SELL | $100K–$500K | 6K | $52.90 | Jun 27, 2024 |
| Ju Chi-Hong | Sr. Vice President | SELL | $100K–$500K | 9K | $55.53 | Jun 25, 2024 |
| Ju Chi-Hong | Sr. Vice President | EXERCISE | $100K–$500K | 9K | $38.92 | Jun 25, 2024 |
| Young John Alexander | CFO | SELL | $100K–$500K | 2K | $55.48 | Jun 20, 2024 |
| Day Christopher | VP, Marketing | SELL | $15K–$50K | 487 | $55.48 | Jun 20, 2024 |
| Lee Chan W | COO | SELL | $50K–$100K | 2K | $55.48 | Jun 20, 2024 |
| Kohn Leslie | CTO | SELL | $50K–$100K | 2K | $55.48 | Jun 20, 2024 |
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Institutional Ownership
13F filings as of Dec 31, 2025 · 271 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| STATE STREET CORP | 1.7M | $1M+ | SH |
| Jericho Capital Asset Management L.P. | 1.6M | $1M+ | SH |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | 1.1M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 890K | $1M+ | SH |
| FULLER & THALER ASSET MANAGEMENT, INC. | 848K | $1M+ | SH |
| FULLER & THALER ASSET MANAGEMENT, INC. | 848K | $1M+ | SH |
| Squarepoint Ops LLC | 794K | $1M+ | SH |
| Point72 Asset Management, L.P. | 772K | $1M+ | SH |
| BARCLAYS PLC | 695K | $1M+ | SH |
| Connor, Clark & Lunn Investment Management Ltd. | 557K | $1M+ | SH |
| Stephens Investment Management Group LLC | 477K | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 476K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 365K | $1M+ | SH |
| PINNACLE ASSOCIATES LTD | 359K | $1M+ | SH |
| EXCHANGE TRADED CONCEPTS, LLC | 353K | $1M+ | SH |
| JANE STREET GROUP, LLC | 338K | $1M+ | SH (Call) |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 318K | $1M+ | SH |
| Handelsbanken Fonder AB | 312K | $1M+ | SH |
| BNP Paribas Asset Management Holding S.A. | 309K | $1M+ | SH |
| BNP PARIBAS FINANCIAL MARKETS | 231K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Jan 30, 2026
12.7%
5.5M shares
SC 13G/A · Apr 24, 2025
7.3%
3.1M shares
SC 13G/A · Nov 12, 2024
11.2%
4.6M shares
SC 13G · Nov 4, 2024
11.2%
4.6M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
10.2%
4.1M shares
The Vanguard Group - 23-1945930
SC 13G/A · Sep 11, 2023
10.2%
4.0M shares