RMBS

SEC source: 0001193125-26-036432 · ownership.xml · nonDerivative · entry 2

Shinn John · CIK 0001847137 · SVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,580

F2 · kind: The shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units, or RSUs.

SEC source: 0001193125-26-036432 · ownership.xml · nonDerivative · entry 1

Shinn John · CIK 0001847137 · SVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,464

F1 · shares: The shares are represented by performance restricted stock units, or PRSUs, all of which vest on February 1, 2026 based upon assessed achievement of the Company's performance metrics and continued service to the Company through the vesting date. Each PRSU represents a contingent right to receive one share of RMBS common stock.

SEC source: 0001193125-26-036430 · ownership.xml · nonDerivative · entry 2

Lynch Desmond · CIK 0001941085 · SVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,891

F3 · kind: The shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units, or RSUs.

SEC source: 0001193125-26-036430 · ownership.xml · nonDerivative · entry 1

Lynch Desmond · CIK 0001941085 · SVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 89,996

F1 · shares: The shares are represented by performance restricted stock units, or PRSUs, all of which vest on February 1, 2026 based upon assessed achievement of the Company's performance metrics and continued service to the Company through the vesting date. Each PRSU represents a contingent right to receive one share of RMBS common stock.

F2 · balance_after: Includes an exempt transaction of 86 shares acquired through the Rambus, Inc. 2015 Employee Stock Purchase Plan

SEC source: 0001193125-26-036329 · ownership.xml · nonDerivative · entry 2

Seraphin Luc · CIK 0001341984 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 370,984

F3 · kind: The shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units, or RSUs.

SEC source: 0001193125-26-036329 · ownership.xml · nonDerivative · entry 1

Seraphin Luc · CIK 0001341984 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 463,507

F1 · shares: The shares are represented by performance restricted stock units, or PRSUs, all of which vest on February 1, 2026 based upon assessed achievement of the Company's performance metrics and continued service to the Company through the vesting date. Each PRSU represents a contingent right to receive one share of RMBS common stock.

F2 · balance_after: Includes an exempt transaction of 522 shares acquired through the Rambus Inc. 2015 Employee Stock Purchase Plan.

SEC source: 0001193125-26-036320 · ownership.xml · nonDerivative · entry 2

FAN XIANZHI SEAN · CIK 0001583840 · EVP, COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 193,954

F2 · kind: The shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units, or RSUs.

SEC source: 0001193125-26-036320 · ownership.xml · nonDerivative · entry 1

FAN XIANZHI SEAN · CIK 0001583840 · EVP, COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 286,357

F1 · shares: The shares are represented by performance restricted stock units, or PRSUs, all of which vest on February 1, 2026 based upon assessed achievement of the Company's performance metrics and continued service to the Company through the vesting date. Each PRSU represents a contingent right to receive one share of RMBS common stock.

SEC source: 0001193125-25-291401 · ownership.xml · nonDerivative · entry 1

FAN XIANZHI SEAN · CIK 0001583840 · EVP, COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 137,555

F1 · kind: No compensation was given to the Reporting Person in relation to their bona fide gift on November 21, 2025.

SEC source: 0001193125-25-290303 · ownership.xml · nonDerivative · entry 1

FAN XIANZHI SEAN · CIK 0001583840 · EVP, COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 137,855

F1 · kind: No compensation was given to the Reporting Person in relation to their bona fide gift on November 19, 2025.

SEC source: 0001193125-25-277055 · ownership.xml · nonDerivative · entry 2

STANG ERIC B · CIK 0001234045 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 20,394

F3 · price: All shares sold at an exact price of $111.785.

F2 · ownership.nature: Shares held directly by the Stang Family Trust dated September 2, 2004 for which the Reporting Person serves as a trustee.

SEC source: 0001193125-25-277055 · ownership.xml · nonDerivative · entry 1

STANG ERIC B · CIK 0001234045 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 24,394

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $102.343 to $102.455, 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.

F2 · ownership.nature: Shares held directly by the Stang Family Trust dated September 2, 2004 for which the Reporting Person serves as a trustee.

SEC source: 0001193125-25-231877 · ownership.xml · nonDerivative · entry 2

Lynch Desmond · CIK 0001941085 · SVP, CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 55,356

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on June 13, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $101.82 to $102.13, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities or Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001193125-25-231877 · ownership.xml · nonDerivative · entry 1

Lynch Desmond · CIK 0001941085 · SVP, CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 58,963

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on June 13, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $100.75 to $101.665, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities or Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001193125-25-227691 · ownership.xml · nonDerivative · entry 1

Rao Meera · CIK 0001480603 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 29,261

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on May 30, 2025.

F2 · price: All shares sold at an exact price of $101.99.

SEC source: 0001193125-25-205166 · ownership.xml · nonDerivative · entry 1

Lynch Desmond · CIK 0001941085 · SVP, CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 64,430

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on June 13, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in mulitple transactions at prices ranging from $88.125 to $94.50, inclusive.

SEC source: 0000950170-25-114452 · ownership.xml · nonDerivative · entry 1

Sayiner Necip · CIK 0001338515 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,824

F1 · price: All shares sold at an exact price of $85.630100.

SEC source: 0001480603-25-000004 · ownership.xml · nonDerivative · entry 1

Rao Meera · CIK 0001480603 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 29,914

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on May 30, 2025.

F2 · price: All shares sold at an exact price of $71.72.

SEC source: 0001941085-25-000005 · ownership.xml · nonDerivative · entry 1

Lynch Desmond · CIK 0001941085 · SVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,504

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.

F2 · balance_after: Includes an exempt transaction of 431 shares acquired through the Rambus Inc. 2015 Employee Stock Purchase Plan.

SEC source: 0001224180-25-000004 · ownership.xml · nonDerivative · entry 1

LAUB STEVEN · CIK 0001224180 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,796

F1 · price: All shares sold at an exact price of $78.72400.

SEC source: 0001318086-25-000007 · ownership.xml · nonDerivative · entry 1

Higashi Emiko · CIK 0001318086 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,296

F1 · price: All shares sold at an exact price of $77.750000

SEC source: 0001338515-25-000004 · ownership.xml · nonDerivative · entry 1

Sayiner Necip · CIK 0001338515 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,324

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $73.51 to $73.59, 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.

SEC source: 0000950170-25-103341 · ownership.xml · nonDerivative · entry 1

Shinn John · CIK 0001847137 · SVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,188

F1 · price: All shares sold at an exact price of $74.613800

SEC source: 0000950170-25-103749 · ownership.xml · nonDerivative · entry 1

Higashi Emiko · CIK 0001318086 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 63,371

F1 · price: All shares sold at an exact price of $75.000000

SEC source: 0000917273-25-000084 · wk-form4_1748470266.xml · nonDerivative · entry 1

LAUB STEVEN · CIK 0001224180 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,057

F1 · price: All shares traded at $55.125.

SEC source: 0000917273-25-000082 · wk-form4_1747778612.xml · nonDerivative · entry 1

LAUB STEVEN · CIK 0001224180 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,904

F1 · price: All shares traded at $55.56.

SEC source: 0000917273-25-000080 · wk-form4_1747089388.xml · nonDerivative · entry 1

STANG ERIC B · CIK 0001234045 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 29,394

F1 · ownership.nature: Shares held directly by the Stang Family Trust dated September 2, 2004 for which the Reporting Person serves as a trustee.

SEC source: 0000917273-25-000077 · wk-form4_1746564803.xml · nonDerivative · entry 1

Lynch Desmond · CIK 0001941085 · SVP, CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 75,798

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on December 13, 2024.

F2 · price: All shares traded at $50.31.

SEC source: 0000917273-25-000069 · wk-form4_1745511010.xml · nonDerivative · entry 2

Seraphin Luc · CIK 0001341984 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 319,241

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on December 13, 2024.

F3 · price: All shares traded at $46.97.

SEC source: 0000917273-25-000069 · wk-form4_1745511010.xml · nonDerivative · entry 1

Seraphin Luc · CIK 0001341984 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 325,589

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on December 13, 2024.

F2 · price: All shares traded at $45.00.

SEC source: 0000917273-25-000067 · wk-form4_1744840716.xml · nonDerivative · entry 1

Seraphin Luc · CIK 0001341984 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 326,844

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on December 13, 2024.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.31 to $48.22, 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.

SEC source: 0000917273-25-000065 · wk-form4_1744161331.xml · nonDerivative · entry 1

Seraphin Luc · CIK 0001341984 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 336,844

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on December 13, 2024.

F2 · price: All shares traded at $46.81

SEC source: 0000917273-25-000063 · wk-form4_1743723061.xml · nonDerivative · entry 3

Allen John K · CIK 0001397728 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,090

F4 · kind: The shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units, or RSUs.

SEC source: 0000917273-25-000063 · wk-form4_1743723061.xml · nonDerivative · entry 2

Allen John K · CIK 0001397728 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,219

F4 · kind: The shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units, or RSUs.

SEC source: 0000917273-25-000063 · wk-form4_1743723061.xml · nonDerivative · entry 1

Allen John K · CIK 0001397728 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,709

F1 · shares: The shares are represented by RSUs which vest in four equal annual installments beginning on April 1, 2026 or the first business trading day thereafter. Each RSU represents a contingent right to receive one share of RMBS common stock.

F2 · balance_after: Includes an exempt transaction of 274 shares acquired through the Rambus Inc. 2015 Employee Stock Purchase plan.

F3 · balance_after: Includes an exempt transaction of 311 shares acquired through the Rambus Inc. 2015 Employee Stock Purchase plan.

SEC source: 0000917273-25-000061 · wk-form4_1743711129.xml · nonDerivative · entry 1

LAUB STEVEN · CIK 0001224180 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,557

F1 · shares: The shares are represented by restricted stock units, or RSUs, all of which vest April 1, 2026 or the first business day thereafter. Each RSU represents the contingent right to receive one share of RMBS common stock.

SEC source: 0000917273-25-000059 · wk-form4_1743710673.xml · nonDerivative · entry 1

Sayiner Necip · CIK 0001338515 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,824

F1 · shares: The shares are represented by restricted stock units, or RSUs, all of which vest April 1, 2026 or the first business day thereafter. Each RSU represents the contingent right to receive one share of RMBS common stock.

SEC source: 0000917273-25-000057 · wk-form4_1743710308.xml · nonDerivative · entry 1

Rao Meera · CIK 0001480603 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,914

F1 · shares: The shares are represented by restricted stock units, or RSUs, all of which vest April 1, 2026 or the first business day thereafter. Each RSU represents the contingent right to receive one share of RMBS common stock.

SEC source: 0000917273-25-000055 · wk-form4_1743709887.xml · nonDerivative · entry 1

Higashi Emiko · CIK 0001318086 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 64,482

F1 · shares: The shares are represented by restricted stock units, or RSUs, all of which vest April 1, 2026 or the first business day thereafter. Each RSU represents the contingent right to receive one share of RMBS common stock.

SEC source: 0000917273-25-000053 · wk-form4_1743709460.xml · nonDerivative · entry 1

KISSNER CHARLES · CIK 0001188095 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,322

F1 · shares: The shares are represented by restricted stock units, or RSUs, all of which vest April 1, 2026 or the first business day thereafter. Each RSU represents the contingent right to receive one share of RMBS common stock.

SEC source: 0000917273-25-000049 · wk-form4_1743708217.xml · nonDerivative · entry 2

Lynch Desmond · CIK 0001941085 · SVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 78,916

F2 · kind: The shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units, or RSUs.

SEC source: 0000917273-25-000049 · wk-form4_1743708217.xml · nonDerivative · entry 1

Lynch Desmond · CIK 0001941085 · SVP, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,745

F1 · shares: The shares are represented by RSUs which vest in four equal annual installments beginning on April 1, 2026 or the first business trading day thereafter. Each RSU represents a contingent right to receive one share of RMBS common stock.

SEC source: 0000917273-25-000051 · wk-form4_1743708930.xml · nonDerivative · entry 1

STANG ERIC B · CIK 0001234045 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,824

F1 · shares: The shares are represented by restricted stock units, or RSUs, all of which vest April 1, 2026 or the first business day thereafter. Each RSU represents the contingent right to receive one share of RMBS common stock.

SEC source: 0000917273-25-000047 · wk-form4_1743707815.xml · nonDerivative · entry 2

Shinn John · CIK 0001847137 · SVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,978

F2 · kind: The shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units, or RSUs.

SEC source: 0000917273-25-000047 · wk-form4_1743707815.xml · nonDerivative · entry 1

Shinn John · CIK 0001847137 · SVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,795

F1 · shares: The shares are represented by RSUs which vest in four equal annual installments beginning on April 1, 2026 or the first business trading day thereafter. Each RSU represents a contingent right to receive one share of RMBS common stock.

SEC source: 0000917273-25-000045 · wk-form4_1743707278.xml · nonDerivative · entry 2

FAN XIANZHI SEAN · CIK 0001583840 · EVP, COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 138,155

F2 · kind: The shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units, or RSUs.

SEC source: 0000917273-25-000045 · wk-form4_1743707278.xml · nonDerivative · entry 1

FAN XIANZHI SEAN · CIK 0001583840 · EVP, COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 141,651

F1 · shares: The shares are represented by RSUs which vest in four equal annual installments beginning on April 1, 2026 or the first business trading day thereafter. Each RSU represents a contingent right to receive one share of RMBS common stock.

SEC source: 0000917273-25-000043 · wk-form4_1743706241.xml · nonDerivative · entry 3

Seraphin Luc · CIK 0001341984 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 346,844

F3 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on December 13, 2024.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.175 to $51.41, 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.

SEC source: 0000917273-25-000043 · wk-form4_1743706241.xml · nonDerivative · entry 2

Seraphin Luc · CIK 0001341984 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 356,844

F2 · kind: The shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units, or RSUs.

SEC source: 0000917273-25-000043 · wk-form4_1743706241.xml · nonDerivative · entry 1

Seraphin Luc · CIK 0001341984 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 362,008

F1 · shares: The shares are represented by RSUs which vest in four equal annual installments beginning on April 1, 2026 or the first business trading day thereafter. Each RSU represents a contingent right to receive one share of RMBS common stock.