RAMBUS INC — Director's Dealing 2010

May 6, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: RAMBUS INC (RMBS)
CIK: 0000917273
Period of Report: 2010-05-04

Reporting Person: LAVELLE THOMAS R (Sr. VP and General Counsel)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-05-04	Common Stock	S	9206	$23.8616	Disposed	63155	Direct
2010-05-05	Common Stock	S	11220	$23.7077	Disposed	51935	Direct
2010-05-05	Common Stock	S	3212	$24.1662	Disposed	0	Indirect

Footnotes

F1: The sale price reported in column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $23.86 to $23.87 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

F2: 3213 shares of Rambus common stock were previously reported as an indirect holding of shares held by the Thomas & Gayle Lavelle Family Trust for which the Reporting Person served as a trustee. These shares were subsequently transferred to an individual account held directly by the Reporting Person.

F3: The sale price reported in column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $23.70 to $23.74.

F4: The sale price reported in column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $24.1650 to $24.17.

F5: 3212 shares of Rambus common stock were previously reported as an indirect holding of shares held by the Thomas & Gayle Lavelle Family Trust for which the Reporting Person served as a trustee. These shares were subsequently transferred to an individual account held directly by the Reporting Person's spouse.