INSIDER
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ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodology
Data sources

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

RH CHAIN…
OverviewFollow the MoneyDaily BriefLiveCongressDirectoryCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodology
01Overview02Follow the Money03Daily Brief04Live05Congress06Directory07Corporate Insiders08Government Money09Political Influence10Institutions11Washington Network12Follow the Power13Disclosure Clock14AI Investigator15Watchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodology
OverviewFollow the MoneyDaily BriefLiveCongressDirectoryCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodology
Data sources
SEC FORM 41h ago
HOUSE PTR1h ago
SEC 13F1h ago
ROBINHOOD CHAIN1h ago
Corporate insider
SR

Sakakibara Shan Riku

Chief Product OfficerCIK 0002088547

EDGAR filingsOpen in network
Disclosed transactions7
Buys / sells0 / 4
Max Insider Score26
Connections1with evidence

Disclosed transactions

ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
8
SR
Sakakibara Shan RikuChief Product Officer
BLLNBillionToOne, Inc.
Gift
G—
3,500 sh
Sep 10, 2026Sep 14, 2026
traded Sep 10, 2026
+4dSEC FORM 4

Evidence

Verified connections

  • Insider ofevidence
    BillionToOne, Inc.Chief Product Officer · Jun 10, 2026
0
SR
Sakakibara Shan RikuChief Product Officer
BLLNBillionToOne, Inc.
Option exercise · 10b5-1 plan
M
$35K
4,000 sh
Jun 24, 2026
Jun 26, 2026
traded Jun 24, 2026
+2d
SEC FORM 4

Evidence

22
SR
Sakakibara Shan RikuChief Product Officer
BLLNBillionToOne, Inc.
Open-market sale · 10b5-1 plan
SELL$440K
4,000 sh
Jun 24, 2026Jun 26, 2026
traded Jun 24, 2026
+2dSEC FORM 4

Evidence

22
SR
Sakakibara Shan RikuChief Product Officer
BLLNBillionToOne, Inc.
Open-market sale · 10b5-1 plan
SELL$440K
4,000 sh
Jun 24, 2026Jun 26, 2026
traded Jun 24, 2026
+2dSEC FORM 4

Evidence

0
SR
Sakakibara Shan RikuChief Product Officer
BLLNBillionToOne, Inc.
Option exercise · 10b5-1 plan
M$35K
4,000 sh
Jun 24, 2026Jun 26, 2026
traded Jun 24, 2026
+2dSEC FORM 4

Evidence

26
SR
Sakakibara Shan RikuChief Product Officer
BLLNBillionToOne, Inc.
Open-market sale · 10b5-1 plan
SELL$386K
4,000 sh
Jun 8, 2026Jun 10, 2026
traded Jun 8, 2026
+2dSEC FORM 4

Evidence

26
SR
Sakakibara Shan RikuChief Product Officer
BLLNBillionToOne, Inc.
Open-market sale · 10b5-1 plan
SELL$400K
4,000 sh
Jun 8, 2026Jun 10, 2026
traded Jun 8, 2026
+2dSEC FORM 4

Evidence