Summary
Updated Aug 30, 2026
Emiko Higashi files SEC Form 4 reports at RAMBUS INC (RMBS). 6 SEC Form 4 filings on record going back to 2024, most recently on 3 June 2026. Most recent open-market trade: sold $790K of RMBS on 3 June 2026. Lifetime open-market sales: $2.56M.
Recent Transactions
7Every recent SEC Form 4 transaction Emiko Higashi has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Emiko Higashi files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Xianzhi Sean Fan - $5.75M of RMBS open-market activity in the last 12 months
- Luc Seraphin - $4.41M of RMBS open-market activity in the last 12 months
- Necip Sayiner - $2.77M of RMBS open-market activity in the last 12 months
- Desmond Lynch - $2.19M of RMBS open-market activity in the last 12 months
- Meera Rao - $1.74M of RMBS open-market activity in the last 12 months
- Eric B. Stang - $1.69M of RMBS open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Emiko Higashi?
Emiko Higashi is a corporate insider of RAMBUS INC (RMBS). InsiderAlpha holds 6 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Emiko Higashi submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Emiko Higashi been buying or selling stock?
Recorded transactions: 0 open-market purchases and 5 open-market sales ($2.56M) across all tracked filings.
Where can I see all of Emiko Higashi's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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