AMBQ
AMBIQ MICRO (AMBQ)
NYSE
$49.60-$2.65 (-5.06%)
Price as of Oct 22, 2026 7:30 PM EDT
  • $1.3B
    Market Cap
  • 76.31%
    1-Year Change
  • Semiconductors
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
MANUFACTURERS LIFE INSURANCE COMPANY, THE
42.60%
10.3M
+10.3M (+100.00%)
Jun 30, 2026
BLACKROCK, INC.
5.71%
1.4M
+367,462 (+26.62%)
Jun 30, 2026
T. ROWE PRICE INVESTMENT MANAGEMENT, INC.
4.16%
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
3.56%
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

  • Institutions47.8M (73.37%)
  • Mutual Funds16.3M (24.96%)
  • Insiders1.1M (1.67%)
  • Other0 (0.00%)

Insider Transactions

  • 1.67% (1.1M)
    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)
  • $692.5M
    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
Oct 15, 2026
$0.00
7,000
$0.00
38,279
Hanson Scott McLean
Chief Technology Officer
Exempt
Oct 15, 2026
$56,840.00
7,000
$8.12
219,546
Hanson Scott McLean
Chief Technology Officer
Sell
Oct 15, 2026
$29,435.52
600
$49.06
218,946
Hanson Scott McLean
Chief Technology Officer
Sell
Oct 15, 2026
$45,074.43
900
$50.08
218,046
Hanson Scott McLean
Chief Technology Officer
Sell
Oct 15, 2026
$189,147.70
3,700
$51.12
214,346
Hanson Scott McLean
Chief Technology Officer
Sell
Oct 15, 2026
$93,350.70
1,800
$51.86
212,546
Chen Sean Chihhsiang
President and COO
Exempt
Oct 14, 2026
$0.00
15,000
$0.00
119,423
Chen Sean Chihhsiang
President and COO
Exempt
Oct 14, 2026
$121,800.00
15,000
$8.12
121,268
Chen Sean Chihhsiang
President and COO
Sell
Oct 14, 2026
$377,922.53
7,539
$50.13
113,729
Chen Sean Chihhsiang
President and COO
Sell
Oct 14, 2026
$64,980.09
1,261
$51.53
112,468
Chen Sean Chihhsiang
President and COO
Sell
Oct 14, 2026
$104,936.40
2,000
$52.47
110,468
Chen Sean Chihhsiang
President and COO
Sell
Oct 14, 2026
$213,745.20
4,000
$53.44
106,468
Chen Sean Chihhsiang
President and COO
Sell
Oct 14, 2026
$10,854.00
200
$54.27
106,268
Chen Sean Chihhsiang
President and COO
Sell
Oct 05, 2026
$365,625.45
5,508
$66.38
108,965
Chen Sean Chihhsiang
President and COO
Sell
Oct 05, 2026
$120,913.12
1,797
$67.29
107,168
Chen Sean Chihhsiang
President and COO
Sell
Oct 05, 2026
$54,460.56
800
$68.08
106,368
Chen Sean Chihhsiang
President and COO
Sell
Oct 05, 2026
$6,951.00
100
$69.51
106,268
Esaka Fumihide
Chief Executive Officer
Sell
Oct 02, 2026
$491,567.34
7,113
$69.11
453,347
Chen Sean Chihhsiang
President and COO
Sell
Oct 02, 2026
$172,217.88
2,492
$69.11
117,783
Hanson Scott McLean
Chief Technology Officer
Sell
Oct 02, 2026
$257,635.74
3,728
$69.11
217,498
Chen Sean Chihhsiang
President and COO
Sell
Oct 02, 2026
$209,874.78
3,008
$69.77
114,775
Esaka Fumihide
Chief Executive Officer
Sell
Oct 02, 2026
$598,994.34
8,585
$69.77
444,762
Chen Sean Chihhsiang
President and COO
Sell
Oct 02, 2026
$21,701.48
302
$71.86
114,473
Hanson Scott McLean
Chief Technology Officer
Sell
Oct 02, 2026
$313,974.90
4,500
$69.77
212,998
Esaka Fumihide
Chief Executive Officer
Sell
Oct 02, 2026
$61,942.63
862
$71.86
443,900
Hanson Scott McLean
Chief Technology Officer
Sell
Oct 02, 2026
$32,480.36
452
$71.86
212,546
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