Key facts
- This page summarizes Xianzhi Sean Fan's Form 4 filing for RAMBUS INC (RMBS).
- 2 reported transactions and 0 derivative rows are listed below.
- Accepted by SEC: 26 May 2026, 17:54.
Xianzhi Sean Fan - 26 May 2026 Form 4 Insider Report for RAMBUS INC (RMBS)
- Reporting relationship
- EVP, COO
- Issuer ticker
- RMBS
- Reported as of
- 26 May 2026
- Net transaction value
- -$5,751,226
- SEC form
- 4
- Accepted by SEC
- 26 May 2026, 17:54:47 UTC
- Prior SEC filing
- 03 Apr 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Brian Wu, by power of attorney
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Xianzhi Sean Fan filed Form 4 for RAMBUS INC (RMBS) on 26 May 2026.
Change
- Previous filing in this sequence was filed on 03 Apr 2026.
- Current net transaction value: -$5,751,226.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001583840
Primary reporting owner
FAN XIANZHI SEAN
- Relationship
- EVP, COO
- Address
- C/O RAMBUS, INC., 4453 NORTH FIRST STREET, SUITE 100, SAN JOSE
- Signature
- /s/ Brian Wu, by power of attorney
- Signature date
- 26 May 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
RMBS
transaction
Common Stock
Sale
- Transaction value
- $5,735,991
- Shares
- -37,814
- Change %
- -18%
- Price
- $151.69
- Shares after
- 168,458
- Date
- 26 May 2026
- Ownership
- Direct
- Footnotes
- F1
RMBS
transaction
Common Stock
Sale
- Transaction value
- $15,235
- Shares
- -100
- Change %
- -0.06%
- Price
- $152.35
- Shares after
- 168,358
- Date
- 26 May 2026
- Ownership
- Direct
- Footnotes
- F2
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 2 footnotes
Footnote F1
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $151.27 to $152.18, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Footnote F2
All shares sold at an exact price of $152.35