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 |
|---|---|---|---|---|---|---|
| Ju Chi-Hong | Sr. Vice President | SELL | $50K–$100K | 1K | $55.48 | Jun 20, 2024 |
| Wang Feng-Ming | CEO | SELL | $100K–$500K | 3K | $55.48 | Jun 20, 2024 |
| Schwarting Elizabeth M | Director | SELL | $1K–$15K | 230 | $55.56 | Jun 20, 2024 |
| Ju Chi-Hong | Sr. Vice President | SELL | $100K–$500K | 4K | $57.11 | Jun 11, 2024 |
| Schwarting Elizabeth M | Director | SELL | $1K–$15K | 240 | $49.47 | Mar 21, 2024 |
| Young John Alexander | CFO | SELL | $50K–$100K | 2K | $49.27 | Mar 20, 2024 |
| Day Christopher | VP, Marketing | SELL | $15K–$50K | 416 | $49.27 | Mar 20, 2024 |
| Lee Chan W | COO | SELL | $50K–$100K | 1K | $49.27 | Mar 20, 2024 |
| Kohn Leslie | CTO | SELL | $50K–$100K | 1K | $49.27 | Mar 20, 2024 |
| Ju Chi-Hong | Sr. Vice President | SELL | $15K–$50K | 778 | $49.27 | Mar 20, 2024 |
| Wang Feng-Ming | CEO | SELL | $100K–$500K | 2K | $49.27 | Mar 20, 2024 |
| PAISLEY CHRISTOPHER B | Director | SELL | $15K–$50K | 500 | $63.14 | Dec 27, 2023 |
| WHITE BRIAN C | CFO | SELL | $100K–$500K | 3K | $63.04 | Dec 21, 2023 |
| Day Christopher | VP, Marketing | SELL | $15K–$50K | 360 | $63.04 | Dec 21, 2023 |
| Lee Chan W | COO | SELL | $50K–$100K | 2K | $63.04 | Dec 21, 2023 |
| Kohn Leslie | CTO | SELL | $100K–$500K | 2K | $63.04 | Dec 21, 2023 |
| Ju Chi-Hong | Sr. Vice President | SELL | $50K–$100K | 1K | $63.04 | Dec 21, 2023 |
| Wang Feng-Ming | CEO | SELL | $100K–$500K | 3K | $63.04 | Dec 21, 2023 |
| WHITE BRIAN C | CFO | SELL | $100K–$500K | 3K | $57.30 | Sep 20, 2023 |
| Day Christopher | VP, Marketing | SELL | $15K–$50K | 351 | $57.30 | Sep 20, 2023 |
| Lee Chan W | COO | SELL | $50K–$100K | 1K | $57.30 | Sep 20, 2023 |
| Kohn Leslie | CTO | SELL | $50K–$100K | 2K | $57.30 | Sep 20, 2023 |
| Ju Chi-Hong | Sr. Vice President | SELL | $50K–$100K | 1K | $57.30 | Sep 20, 2023 |
| Wang Feng-Ming | CEO | SELL | $100K–$500K | 3K | $57.30 | Sep 20, 2023 |
| Schwarting Elizabeth M | Director | SELL | $15K–$50K | 777 | $58.57 | Sep 15, 2023 |
| Day Christopher | VP, Marketing | SELL | $100K–$500K | 2K | $82.50 | Jul 14, 2023 |
| Ju Chi-Hong | Sr. Vice President | SELL | $100K–$500K | 4K | $81.81 | Jul 10, 2023 |
| WHITE BRIAN C | CFO | GRANT | N/A | 74K | — | Jun 20, 2023 |
| WHITE BRIAN C | CFO | SELL | $100K–$500K | 3K | $84.80 | Jun 20, 2023 |
| Day Christopher | VP, Marketing | GRANT | N/A | 8K | — | Jun 20, 2023 |
| Day Christopher | VP, Marketing | SELL | $15K–$50K | 354 | $84.80 | Jun 20, 2023 |
| Lee Chan W | COO | GRANT | N/A | 25K | — | Jun 20, 2023 |
| Lee Chan W | COO | SELL | $100K–$500K | 1K | $84.80 | Jun 20, 2023 |
| Kohn Leslie | CTO | GRANT | N/A | 28K | — | Jun 20, 2023 |
| Kohn Leslie | CTO | SELL | $100K–$500K | 2K | $84.80 | Jun 20, 2023 |
| Ju Chi-Hong | Sr. Vice President | SELL | $50K–$100K | 1K | $84.80 | Jun 20, 2023 |
| Ju Chi-Hong | Sr. Vice President | GRANT | N/A | 18K | — | Jun 20, 2023 |
| Wang Feng-Ming | CEO | SELL | $100K–$500K | 3K | $84.80 | Jun 20, 2023 |
| Wang Feng-Ming | CEO | GRANT | N/A | 51K | — | Jun 20, 2023 |
| Schwarting Elizabeth M | Director | SELL | $100K–$500K | 1K | $85.76 | Jun 20, 2023 |
| Schwarting Elizabeth M | Director | GRANT | N/A | 2K | — | Jun 20, 2023 |
| Day Christopher | VP, Marketing | SELL | $100K–$500K | 3K | $86.94 | Jun 14, 2023 |
| Day Christopher | VP, Marketing | SELL | $100K–$500K | 4K | $82.97 | Jun 12, 2023 |
| Ju Chi-Hong | Sr. Vice President | SELL | $100K–$500K | 4K | $82.62 | Jun 9, 2023 |
| Chen Yun-Lung | VP | SELL | $500K+ | 9K | $76.80 | Jun 7, 2023 |
| Day Christopher | VP, Marketing | SELL | $100K–$500K | 4K | $69.24 | Apr 14, 2023 |
| WHITE BRIAN C | CFO | SELL | $500K+ | 11K | $76.85 | Mar 18, 2023 |
| WHITE BRIAN C | CFO | EXERCISE | N/A | 20K | — | Mar 18, 2023 |
| Day Christopher | VP, Marketing | EXERCISE | N/A | 7K | — | Mar 18, 2023 |
| Day Christopher | VP, Marketing | SELL | $100K–$500K | 2K | $76.85 | Mar 18, 2023 |
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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