Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| RAMBUS INCRMBS · Entity 3575 | Director · President and CEO | April 01, 2026 | April 04, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
RAMBUS INC
Report date April 01, 2026 · Filed April 04, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 345,767 |
Ending reported balance
After 2026-04-02 transaction · row 5
5 source rows · reconciled sequenceRow 1 · 2026-04-01 · Grant · Acquired 32,684 · Balance 363,754 F1: The shares are represented by RSUs which vest in four equal annual installments beginning on April 1, 2027 or the first business trading day thereafter. Each RSU represents a contingent right to receive one share of RMBS common stock. Row 2 · 2026-04-01 · Tax withholding · Disposed 12,561 · Balance 351,193 F2: The shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units, or RSUs. Row 3 · 2026-04-02 · Sale · Disposed 2,511 · Balance 348,682 F3: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on November 11, 2025 F4: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $85.70 to $86.48, 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. Row 4 · 2026-04-02 · Sale · Disposed 2,750 · Balance 345,932 F3: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on November 11, 2025 F5: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $86.81 to $87.80, 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. Row 5 · 2026-04-02 · Sale · Disposed 165 · Balance 345,767 F3: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on November 11, 2025 F6: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $87.85 to $88.71, 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. |
Filing footnotes · ownership attribution and instrument terms
F1: The shares are represented by RSUs which vest in four equal annual installments beginning on April 1, 2027 or the first business trading day thereafter. Each RSU represents a contingent right to receive one share of RMBS common stock.
F2: The shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units, or RSUs.
F3: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on November 11, 2025
F4: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $85.70 to $86.48, 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.
F5: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $86.81 to $87.80, 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.
F6: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $87.85 to $88.71, 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.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| February 04, 2019 Filed Feb 5, 2019 21:14 UTC | RAMBUS INC RMBS · Entity 3575 | Tax withholdingCommon Stock | 1,124 | $9.38 | $10,543.12 |
DisclosureSEC source: 0000899243-19-002614 · doc4.xml · nonDerivative · entry 3 Seraphin Luc · CIK 0001341984 · Director · President and CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 296,304 F1 · kind: The shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units, or RSUs. Read SEC document |
| February 01, 2019 Filed Feb 5, 2019 21:14 UTC | RAMBUS INC RMBS · Entity 3575 | GrantCommon Stock | 115,000 | $0.00 | $0.00 |
DisclosureSEC source: 0000899243-19-002614 · doc4.xml · nonDerivative · entry 2 Seraphin Luc · CIK 0001341984 · Director · President and CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 297,428 F2 · shares: The shares are represented by RSUs which vest in four equal annual installments beginning on February 1, 2020 or the first business trading day thereafter. Each RSU represents a contingent right to receive one share of RMBS common stock. Read SEC document |
| February 01, 2019 Filed Feb 5, 2019 21:14 UTC | RAMBUS INC RMBS · Entity 3575 | Tax withholdingCommon Stock | 17,076 | $9.38 | $160,172.88 |
DisclosureSEC source: 0000899243-19-002614 · doc4.xml · nonDerivative · entry 1 Seraphin Luc · CIK 0001341984 · Director · President and CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 182,428 F1 · kind: The shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units, or RSUs. Read SEC document |
| December 03, 2018 Filed Dec 5, 2018 01:08 UTC | RAMBUS INC RMBS · Entity 3575 | Tax withholdingCommon Stock | 2,570 | $8.92 | $22,924.40 |
DisclosureSEC source: 0000899243-18-030096 · doc4.xml · nonDerivative · entry 1 Seraphin Luc · CIK 0001341984 · Director · President and CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 199,504 F1 · kind: The shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units, or RSUs. Read SEC document |
| November 01, 2018 Filed Nov 2, 2018 22:15 UTC | RAMBUS INC RMBS · Entity 3575 | GrantCommon Stock | 36,150 | $0.00 | $0.00 |
DisclosureSEC source: 0000899243-18-028058 · doc4.xml · nonDerivative · entry 1 Seraphin Luc · CIK 0001341984 · Director · President and CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 202,074 F1 · shares: The shares are represented by restricted stock units, or RSUs, all of which vest on November 1, 2019 or the first business day thereafter. Each RSU represents the contingent right to receive one share of RMBS common stock. Read SEC document |
| July 02, 2018 Filed Jul 5, 2018 23:33 UTC | RAMBUS INC RMBS · Entity 3575 | GrantCommon Stock | 29,782 | $0.00 | $0.00 |
DisclosureSEC source: 0000899243-18-019514 · doc4.xml · nonDerivative · entry 1 Seraphin Luc · CIK 0001341984 · Interim CEO, SVP & GM 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 165,924 F1 · shares: The shares are represented by restricted stock units, or RSUs, all of which vest on July 2, 2019 or the first business day thereafter. Each RSU represents the contingent right to receive one share of RMBS common stock. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.