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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
917273	Rambus Inc	RMBS	Semiconductors & Related Devices (3674)	943112828

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1232019	Penny Herscher	4440 El Camino Real Los Altos CA 94022		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2010-10-01	7,672	$0.00	7,672	No	4	A	Direct
Common Stock	Disposition	2010-10-04	3,978	$20.50	10,351	No	4	S	Indirect	See Footnote

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	A	Direct
No	4	S	Indirect	See Footnote

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	14,329	Indirect	See Footnote

Footnotes

Shares are represented by restricted stock units. Each restricted stock unit represents a contingent right to receive one share of RMBS common stock.
All of the restricted stock units vest on October 1, 2011.
Excludes 9,946 shares represented by restricted stock units previously held directly by the Reporting Person. Upon vesting, shares were issued to and are now held directly by the 2001 Herscher Family Trust U/A/D 6/14/2001 for which the reporting person serves as a trustee.
Includes 9,946 shares represented by restricted stock units previously held directly by the Reporting Person. Upon vesting, shares were issued to and are now held directly by the 2001 Herscher Family Trust.
Shares held directly by the 2001 Herscher Family Trust.
The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 30, 2009.
The sale price reported in column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $20.34 to $20.9025 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will be provide full information regarding the number of shares sold at each separate price.