AMBQ
AMBIQ MICRO (AMBQ)
NYSE
$69.43+$0.28 (+0.41%)
Price as of Oct 02, 2026 4:15 PM EDT
  • $1.7B
    Market Cap
  • 132.99%
    1-Year Change
  • Semiconductors
    Industry

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

Current Ownership Distribution

  • Institutions47.7M (73.22%)
  • Mutual Funds16.3M (24.97%)
  • Insiders1.2M (1.81%)
  • Other0 (0.00%)

Insider Transactions

  • 1.81% (1.2M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 6
    Number of InsiderSelling (last 12 months)
  • $431.1M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Hanson Scott McLean
Chief Technology Officer
Exempt
Sep 15, 2026
$0.00
7,000
$0.00
45,279
Hanson Scott McLean
Chief Technology Officer
Exempt
Sep 15, 2026
$56,840.00
7,000
$8.12
228,226
Hanson Scott McLean
Chief Technology Officer
Sell
Sep 15, 2026
$116,269.71
1,953
$59.53
226,273
Hanson Scott McLean
Chief Technology Officer
Sell
Sep 15, 2026
$299,572.51
4,947
$60.56
221,326
Hanson Scott McLean
Chief Technology Officer
Sell
Sep 15, 2026
$6,100.00
100
$61.00
221,226
Chen Sean Chihhsiang
President and COO
Exempt
Sep 14, 2026
$0.00
15,000
$0.00
134,423
Chen Sean Chihhsiang
President and COO
Exempt
Sep 14, 2026
$121,800.00
15,000
$8.12
135,275
Chen Sean Chihhsiang
President and COO
Sell
Sep 14, 2026
$154,345.62
2,600
$59.36
132,675
Chen Sean Chihhsiang
President and COO
Sell
Sep 14, 2026
$662,618.00
11,000
$60.24
121,675
Chen Sean Chihhsiang
President and COO
Sell
Sep 14, 2026
$85,166.48
1,400
$60.83
120,275
ZHANG KER
Exempt
Sep 04, 2026
$0.00
1,785
$0.00
0
ZHANG KER
Exempt
Sep 04, 2026
$10,495.80
1,785
$5.88
30,551
ZHANG KER
Sell
Sep 04, 2026
$10,530.20
185
$56.92
30,366
Esaka Fumihide
Chief Executive Officer
Exempt
Sep 02, 2026
$0.00
11,027
$0.00
19,007
Esaka Fumihide
Chief Executive Officer
Exempt
Sep 02, 2026
$138,940.20
11,027
$12.60
471,487
Esaka Fumihide
Chief Executive Officer
Sell
Sep 02, 2026
$81,534.01
1,452
$56.15
470,035
Esaka Fumihide
Chief Executive Officer
Sell
Sep 02, 2026
$543,573.71
9,575
$56.77
460,460
Esaka Fumihide
Chief Executive Officer
Exempt
Sep 01, 2026
$617,059.80
48,973
$12.60
509,433
Esaka Fumihide
Chief Executive Officer
Sell
Sep 01, 2026
$2.8M
48,973
$56.39
460,460
Esaka Fumihide
Chief Executive Officer
Exempt
Sep 01, 2026
$0.00
48,973
$0.00
30,034
Esaka Fumihide
Chief Executive Officer
Exempt
Aug 31, 2026
$0.00
13,500
$0.00
72,007
Esaka Fumihide
Chief Executive Officer
Exempt
Aug 31, 2026
$0.00
35,000
$0.00
79,007
Esaka Fumihide
Chief Executive Officer
Exempt
Aug 31, 2026
$0.00
9,271
$0.00
175,272
Esaka Fumihide
Chief Executive Officer
Exempt
Aug 31, 2026
$109,620.00
13,500
$8.12
464,689
Esaka Fumihide
Chief Executive Officer
Sell
Aug 31, 2026
$335,452.53
5,899
$56.87
458,790
Esaka Fumihide
Chief Executive Officer
Sell
Aug 31, 2026
$317,708.60
5,501
$57.75
453,289
Esaka Fumihide
Chief Executive Officer
Sell
Aug 31, 2026
$122,889.06
2,100
$58.52
451,189
Esaka Fumihide
Chief Executive Officer
Exempt
Aug 31, 2026
$557,814.60
44,271
$12.60
495,460
Esaka Fumihide
Chief Executive Officer
Sell
Aug 31, 2026
$886,218.84
15,600
$56.81
479,860
Esaka Fumihide
Chief Executive Officer
Sell
Aug 31, 2026
$796,276.56
13,800
$57.70
466,060