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AMBIQ MICRO (AMBQ)
NYSE
$58.60-$0.42 (-0.71%)
Price as of Aug 21, 2026 7:56 PM EDT- $1.4BMarket Cap
- 53.42%1-Year Change
- SemiconductorsIndustry
AMBIQ MICRO (AMBQ)
$58.60-$0.42 (-0.71%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
MANUFACTURERS LIFE INSURANCE COMPANY, THE | 42.67% | 10.3M | +10.3M (+100.00%) | Jun 30, 2026 |
BLACKROCK, INC. | 5.72% | 1.4M | +367,462 (+26.62%) | Jun 30, 2026 |
T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | 4.17% | 1.0M | -261,192 (-25.95%) | Jun 30, 2026 |
D. E. SHAW & CO., INC. | 4.07% | 983,916 | +983,916 (+100.00%) | Jun 30, 2026 |
ATREIDES MANAGEMENT, LP | 3.63% | 877,123 | +14,948 (+1.70%) | Jun 30, 2026 |
STATE STREET CORP | 3.57% | 861,979 | +601,752 (+69.81%) | Jun 30, 2026 |
VANGUARD CAPITAL MANAGEMENT LLC | 3.18% | 768,539 | +61,135 (+7.95%) | Jun 30, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
VANGUARD INDEX FUNDS | 2.85% | 688,326 | +492,349 (+71.53%) | Mar 31, 2026 |
iSHARES TRUST | 2.61% | 630,940 | 0 (0.00%) | May 31, 2026 |
T. Rowe Price Small-Cap Value Fund, Inc. | 1.36% | 328,890 | +328,890 (+100.00%) | Mar 31, 2026 |
AB CAP FUND, INC. | 1.35% | 324,852 | -52,267 (-16.09%) | Apr 30, 2026 |
T. Rowe Price Small-Cap Stock Fund, Inc. | 1.30% | 313,429 | +313,429 (+100.00%) | Mar 31, 2026 |
TEMPLETON GLOBAL SMALLER COMPANIES FUND | 1.19% | 286,529 | -200,575 (-70.00%) | May 31, 2026 |
WASATCH FUNDS TRUST | 1.04% | 251,831 | +56,846 (+22.57%) | Mar 31, 2026 |
Current Ownership Distribution
- Institutions47.7M (80.09%)
- Mutual Funds10.7M (17.95%)
- Insiders1.2M (1.97%)
- Other0 (0.00%)
Insider Transactions
- 1.97% (1.2M)Current InsiderOwnership (%, shares)
- 0Number of InsiderBuying (last 12 months)
- $0.00Amount of InsiderBuying (last 12 months)
- 4Number of InsiderSelling (last 12 months)
- $135.7MAmount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
Esaka Fumihide Chief Executive Officer | Exempt | Aug 14, 2026 | $0.00 | 13,500 | $0.00 | 85,507 |
Hanson Scott McLean Chief Technology Officer | Exempt | Aug 14, 2026 | $0.00 | 7,000 | $0.00 | 62,279 |
Esaka Fumihide Chief Executive Officer | Exempt | Aug 14, 2026 | $109,620.00 | 13,500 | $8.12 | 464,689 |
Hanson Scott McLean Chief Technology Officer | Exempt | Aug 14, 2026 | $56,840.00 | 7,000 | $8.12 | 218,226 |
Esaka Fumihide Chief Executive Officer | Sell | Aug 14, 2026 | $81,132.27 | 1,282 | $63.29 | 463,407 |
Hanson Scott McLean Chief Technology Officer | Sell | Aug 14, 2026 | $50,604.96 | 800 | $63.26 | 217,426 |
Esaka Fumihide Chief Executive Officer | Sell | Aug 14, 2026 | $690,200.62 | 10,718 | $64.40 | 452,689 |
Hanson Scott McLean Chief Technology Officer | Sell | Aug 14, 2026 | $347,792.94 | 5,400 | $64.41 | 212,026 |
Esaka Fumihide Chief Executive Officer | Sell | Aug 14, 2026 | $97,893.15 | 1,500 | $65.26 | 451,189 |
Hanson Scott McLean Chief Technology Officer | Sell | Aug 14, 2026 | $52,241.04 | 800 | $65.30 | 211,226 |
TAUTGES JOSEPH A | Award | Jun 08, 2026 | $0.00 | 4,957 | $0.00 | 53,703 |
HSIEH Wen Hsuan | Award | Jun 08, 2026 | $0.00 | 4,957 | $0.00 | 4,957 |
Banks Bernard Bennett | Award | Jun 08, 2026 | $0.00 | 4,957 | $0.00 | 4,957 |
ZHANG KER | Award | Jun 08, 2026 | $0.00 | 4,957 | $0.00 | 28,766 |
Connors Michele Kim General Counsel | Sell | Apr 02, 2026 | $17,185.41 | 660 | $26.04 | 60,705 |
Connors Michele Kim General Counsel | Sell | Apr 02, 2026 | $4,024.29 | 151 | $26.65 | 60,554 |
Chen Sean Chihhsiang President and COO | Award | Mar 06, 2026 | $0.00 | 64,246 | $0.00 | 120,275 |
Hanson Scott McLean Chief Technology Officer | Award | Mar 06, 2026 | $0.00 | 80,308 | $0.00 | 203,126 |
Winzeler Jeffrey G Chief Financial Officer | Award | Mar 06, 2026 | $0.00 | 41,728 | $0.00 | 94,395 |
TAUTGES JOSEPH A | Sell | Jan 26, 2026 | $241,800.00 | 7,800 | $31.00 | 48,746 |
Hanson Scott McLean Chief Technology Officer | Sell | Jan 26, 2026 | $310,000.00 | 10,000 | $31.00 | 122,818 |
Connors Michele Kim General Counsel | Award | Jan 05, 2026 | $0.00 | 23,759 | $0.00 | 23,759 |
Connors Michele Kim General Counsel | Award | Jan 05, 2026 | $0.00 | 5,483 | $0.00 | 29,242 |
Esaka Fumihide Chief Executive Officer | Exempt | Oct 07, 2025 | $0.00 | 53,660 | $0.00 | 0 |
Esaka Fumihide Chief Executive Officer | Exempt | Oct 07, 2025 | $315,520.80 | 53,660 | $5.88 | 230,573 |
Esaka Fumihide Chief Executive Officer | Award | Oct 02, 2025 | $0.00 | 159,907 | $0.00 | 176,913 |
Hanson Scott McLean Chief Financial Officer | Award | Oct 02, 2025 | $0.00 | 83,819 | $0.00 | 132,818 |
KPCB XVI Associates, LLC | Conversion | Jul 31, 2025 | $0.00 | 748,046 | $0.00 | 0 |
HSIEH Wen Hsuan | Conversion | Jul 31, 2025 | $0.00 | 394,989 | $0.00 | 0 |
KPCB XVI Associates, LLC | Conversion | Jul 31, 2025 | $0.00 | 98,958 | $0.00 | 0 |