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Data sources

Public disclosures only. Scores flag unusual patterns and are not evidence of wrongdoing. Not investment advice.

RH CHAIN…
OverviewFollow the MoneyDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
01Overview02Follow the Money03Daily Brief04Live05Congress06Corporate Insiders07Government Money08Political Influence09Institutions10Washington Network11Follow the Power12Disclosure Clock13AI Investigator14Watchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
OverviewFollow the MoneyDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
Data sources
SEC FORM 42h ago
HOUSE PTR2h ago
SEC 13F2h ago
ROBINHOOD CHAIN2h ago
Corporate insider
EF

Esaka Fumihide

Director, Chief Executive OfficerCIK 0002078454

EDGAR filingsOpen in network
Disclosed transactions53
Buys / sells0 / 25
Max Insider Score49
Connections1with evidence

Disclosed transactions

ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
11
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$62K
1,200 sh
Oct 15, 2026Oct 16, 2026
traded Oct 15, 2026
+1dSEC FORM 4

Evidence

Verified connections

  • Insider ofevidence
    Ambiq Micro, Inc.Director, Chief Executive Officer · Feb 10, 2026
0
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise · 10b5-1 plan
M
—
5,000 sh
Oct 15, 2026
Oct 16, 2026
traded Oct 15, 2026
+1d
SEC FORM 4

Evidence

0
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise · 10b5-1 plan
M$41K
5,000 sh
Oct 15, 2026Oct 16, 2026
traded Oct 15, 2026
+1dSEC FORM 4

Evidence

8
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$25K
500 sh
Oct 15, 2026Oct 16, 2026
traded Oct 15, 2026
+1dSEC FORM 4

Evidence

8
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$25K
500 sh
Oct 15, 2026Oct 16, 2026
traded Oct 15, 2026
+1dSEC FORM 4

Evidence

11
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$143K
2,800 sh
Oct 15, 2026Oct 16, 2026
traded Oct 15, 2026
+1dSEC FORM 4

Evidence

30
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale
SELL$599K
8,585 sh
Oct 2, 2026Oct 6, 2026
traded Oct 2, 2026
+4dSEC FORM 4

Evidence

27
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale
SELL$62K
862 sh
Oct 2, 2026Oct 6, 2026
traded Oct 2, 2026
+4dSEC FORM 4

Evidence

30
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale
SELL$492K
7,113 sh
Oct 2, 2026Oct 6, 2026
traded Oct 2, 2026
+4dSEC FORM 4

Evidence

8
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$6,100
100 sh
Sep 15, 2026Sep 15, 2026
traded Sep 15, 2026
+0dSEC FORM 4

Evidence

11
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$225K
3,785 sh
Sep 15, 2026Sep 15, 2026
traded Sep 15, 2026
+0dSEC FORM 4

Evidence

0
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise · 10b5-1 plan
M$110K
13.5K sh
Sep 15, 2026Sep 15, 2026
traded Sep 15, 2026
+0dSEC FORM 4

Evidence

0
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise · 10b5-1 plan
M—
19.0K sh
Sep 11, 2026Sep 15, 2026
traded Sep 11, 2026
+4dSEC FORM 4

Evidence

0
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise · 10b5-1 plan
M—
13.5K sh
Sep 15, 2026Sep 15, 2026
traded Sep 15, 2026
+0dSEC FORM 4

Evidence

14
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$506K
7,917 sh
Sep 11, 2026Sep 15, 2026
traded Sep 11, 2026
+4dSEC FORM 4

Evidence

21
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$2.66M
42.1K sh
Sep 11, 2026Sep 15, 2026
traded Sep 11, 2026
+4dSEC FORM 4

Evidence

2
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise · 10b5-1 plan
M$630K
50.0K sh
Sep 11, 2026Sep 15, 2026
traded Sep 11, 2026
+4dSEC FORM 4

Evidence

0
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise · 10b5-1 plan
M—
31.0K sh
Sep 11, 2026Sep 15, 2026
traded Sep 11, 2026
+4dSEC FORM 4

Evidence

14
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$582K
9,615 sh
Sep 15, 2026Sep 15, 2026
traded Sep 15, 2026
+0dSEC FORM 4

Evidence

3
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise · 10b5-1 plan
M—
13.5K sh
Aug 31, 2026Sep 2, 2026
traded Aug 31, 2026
+2dSEC FORM 4

Evidence

14
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$544K
9,575 sh
Sep 2, 2026Sep 2, 2026
traded Sep 2, 2026
+0dSEC FORM 4

Evidence

7
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise · 10b5-1 plan
M—
35.0K sh
Aug 31, 2026Sep 2, 2026
traded Aug 31, 2026
+2dSEC FORM 4

Evidence

4
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise · 10b5-1 plan
M—
11.0K sh
Sep 2, 2026Sep 2, 2026
traded Sep 2, 2026
+0dSEC FORM 4

Evidence

0
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise · 10b5-1 plan
M$110K
13.5K sh
Aug 31, 2026Sep 2, 2026
traded Aug 31, 2026
+2dSEC FORM 4

Evidence

0
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise · 10b5-1 plan
M$139K
11.0K sh
Sep 2, 2026Sep 2, 2026
traded Sep 2, 2026
+0dSEC FORM 4

Evidence

11
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$82K
1,452 sh
Sep 2, 2026Sep 2, 2026
traded Sep 2, 2026
+0dSEC FORM 4

Evidence

0
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise · 10b5-1 plan
M—
9,271 sh
Aug 31, 2026Sep 2, 2026
traded Aug 31, 2026
+2dSEC FORM 4

Evidence

0
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise · 10b5-1 plan
M—
49.0K sh
Sep 1, 2026Sep 2, 2026
traded Sep 1, 2026
+1dSEC FORM 4

Evidence

17
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$335K
5,899 sh
Aug 31, 2026Sep 2, 2026
traded Aug 31, 2026
+2dSEC FORM 4

Evidence

17
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$318K
5,501 sh
Aug 31, 2026Sep 2, 2026
traded Aug 31, 2026
+2dSEC FORM 4

Evidence

14
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$123K
2,100 sh
Aug 31, 2026Sep 2, 2026
traded Aug 31, 2026
+2dSEC FORM 4

Evidence

5
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise · 10b5-1 plan
M$558K
44.3K sh
Aug 31, 2026Sep 2, 2026
traded Aug 31, 2026
+2dSEC FORM 4

Evidence

17
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$886K
15.6K sh
Aug 31, 2026Sep 2, 2026
traded Aug 31, 2026
+2dSEC FORM 4

Evidence

17
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$796K
13.8K sh
Aug 31, 2026Sep 2, 2026
traded Aug 31, 2026
+2dSEC FORM 4

Evidence

17
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$327K
5,600 sh
Aug 31, 2026Sep 2, 2026
traded Aug 31, 2026
+2dSEC FORM 4

Evidence

2
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise · 10b5-1 plan
M$617K
49.0K sh
Sep 1, 2026Sep 2, 2026
traded Sep 1, 2026
+1dSEC FORM 4

Evidence

21
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$2.76M
49.0K sh
Sep 1, 2026Sep 2, 2026
traded Sep 1, 2026
+1dSEC FORM 4

Evidence

12
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$690K
10.7K sh
Aug 14, 2026Aug 18, 2026
traded Aug 14, 2026
+4dSEC FORM 4

Evidence

9
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$81K
1,282 sh
Aug 14, 2026Aug 18, 2026
traded Aug 14, 2026
+4dSEC FORM 4

Evidence

0
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise · 10b5-1 plan
M$110K
13.5K sh
Aug 14, 2026Aug 18, 2026
traded Aug 14, 2026
+4dSEC FORM 4

Evidence

0
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise · 10b5-1 plan
M—
13.5K sh
Aug 14, 2026Aug 18, 2026
traded Aug 14, 2026
+4dSEC FORM 4

Evidence

9
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale · 10b5-1 plan
SELL$98K
1,500 sh
Aug 14, 2026Aug 18, 2026
traded Aug 14, 2026
+4dSEC FORM 4

Evidence

19
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise
M$487K
60.0K sh
May 14, 2026May 18, 2026
traded May 14, 2026
+4dSEC FORM 4

Evidence

8
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise
M$183K
14.5K sh
May 15, 2026May 18, 2026
traded May 15, 2026
+3dSEC FORM 4

Evidence

15
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise
M$369K
45.5K sh
May 15, 2026May 18, 2026
traded May 15, 2026
+3dSEC FORM 4

Evidence

49
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Open-market sale
SELL$4.20M
60.0K sh
May 14, 2026May 18, 2026
traded May 14, 2026
+4dSEC FORM 4

Evidence

21
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise
M—
60.0K sh
May 14, 2026May 18, 2026
traded May 14, 2026
+4dSEC FORM 4

Evidence

17
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise
M—
45.5K sh
May 15, 2026May 18, 2026
traded May 15, 2026
+3dSEC FORM 4

Evidence

9
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise
M—
7,936 sh
May 15, 2026May 18, 2026
traded May 15, 2026
+3dSEC FORM 4

Evidence

5
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise
M—
6,601 sh
May 15, 2026May 18, 2026
traded May 15, 2026
+3dSEC FORM 4

Evidence

21
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Grant or award
A—
160.6K sh
Mar 6, 2026Mar 10, 2026
traded Mar 6, 2026
+4dSEC FORM 4

Evidence

24
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise
M—
53.7K sh
Oct 7, 2025Feb 10, 2026
traded Oct 7, 2025
+126dSEC FORM 4

Evidence

38
EF
Esaka FumihideDirector, Chief Executive Officer
AMBQAmbiq Micro, Inc.
Option exercise
M$316K
53.7K sh
Oct 7, 2025Feb 10, 2026
traded Oct 7, 2025
+126dSEC FORM 4

Evidence