Companies / Ambiq Micro, Inc.

Ambiq Micro, Inc.

NYSE: AMBQCIK 1500412AUSTIN, TX

Financials · FY2025

Revenue$72.51M
Net income$-36.46M
Total debt—
Cash$366.77M
Diluted EPS$-4.57
Shares outstanding24.2M

Ownership

24.2M shares outstanding · as of Aug 7, 2026
6.6%Insiders
Ownership
Insiders6.59%1,593,686
Institutions34.74%8,401,631
Public float58.67%14,189,219

% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.

Insiders 9

View all →
Insider% of sharesShares
HSIEH Wen HsuanDirector
2.62%633,920
Esaka FumihideCEOChief Executive Officer · Director
1.62%391,189
Hanson Scott McLeanChief Technology Officer · Director
0.84%203,126
Chen Sean ChihhsiangPresident and COO
0.50%120,275
Winzeler Jeffrey GChief Financial Officer
0.44%106,299
Connors Michele KimGeneral Counsel
0.25%61,365
Tautges Joseph aDirector
0.20%48,746
Zhang KerDirector
0.12%28,766
Banks Bernard BennettDirector
——

Institutional holders 86

View all →
HolderValue% of shares
BlackRock, Inc.$121.91M5.71%
State Street Corporation$76.11M3.56%
Atreides Management, LP$19.85M2.88%
AllianceBernstein L.P.$19.55M2.84%
Deutsche Bank AG$14.60M0.68%
KADENSA CAPITAL Ltd$11.26M1.63%
Vanguard Group Inc$9.35M1.36%
Franklin Resources, Inc.$8.77M1.27%
Geode Capital Management, LLC$7.56M1.23%
Silvercrest Asset Management Group LLC$7.18M1.17%

Activity

View all →
InsidersInstitutions
What insiders are doing in this stock (Form 4).
DateActorActionSecurityValueShares ΔPosition afterImpact
Feb 18, 2026HSIEH Wen Hsuan
Director
ExerciseCommon Stock$3.01M+239K
+60.49%
633,920
2.62% of shares
low
May 14, 2026Winzeler Jeffrey G
Executive
SellCommon Stock$1.81M-26K
-21.53%
94,477
0.39% of shares
medium
May 14, 2026Winzeler Jeffrey G
Executive
ExerciseCommon Stock$436.8K+26K
+27.54%
120,395
0.50% of shares
low
Oct 7, 2025Esaka Fumihide
CEO
ExerciseCommon Stock$315.5K+54K
+30.33%
230,573
0.95% of shares
low
Jan 26, 2026Hanson Scott McLean
Executive
SellCommon Stock$310.0K-10K
-7.53%
122,818
0.51% of shares
medium
Jan 26, 2026Tautges Joseph a
Director
SellCommon Stock$241.8K-8K
-13.79%
48,746
0.20% of shares
medium
Jun 2, 2026Winzeler Jeffrey G
Executive
ExerciseCommon Stock$100.0K+6K
+5.93%
106,299
0.44% of shares
low
May 15, 2026Winzeler Jeffrey G
Executive
ExerciseCommon Stock$100.0K+6K
+6.31%
100,347
0.41% of shares
low

Securities

via CUSIP / OpenFIGI
SymbolTypeMarketCUSIPFIGI
AMBQCommon StockEquity023193105BBG0026ZDH90