[Form 4] Rambus Inc Insider Trading Activity

Rhea-AI Filing Summary

Steven Laub, a director of Rambus Inc. (RMBS), reported a sale of 2,261 shares of Rambus common stock on 08/29/2025 at an exact price of $78.72400 per share. After the reported transaction, Mr. Laub beneficially owns 6,796 shares, held directly. The Form 4 was filed as a single reporting-person filing and signed by Brian Wu by power of attorney on 09/02/2025. The filing discloses only the non-derivative sale and provides no additional commentary or related transactions.

Positive

• Transaction publicly disclosed via Form 4, increasing transparency
• Exact sale price cited ($78.72400) and post-transaction beneficial ownership reported

Negative

• Director sold 2,261 shares, which reduces his direct ownership
• No indication in the filing of a Rule 10b5-1 plan or stated rationale for the sale

Insights

Financial Analyst

TL;DR: Director sold a modest block of shares; filing is routine and provides transparent disclosure of the transaction.

The Form 4 shows a straightforward non-derivative sale of 2,261 shares by a company director at a specified price, leaving 6,796 shares beneficially owned. There are no derivative transactions, no multiple reporting persons, and no indicators of an irregular selling pattern in this filing alone. For investors, this is a routine insider disclosure that increases public transparency but, without additional context on total holdings or pattern of trades, does not by itself indicate a material change to the company's outlook.

Corporate Governance Expert

TL;DR: The filing meets Section 16 disclosure requirements; sale was reported timely and executed via power of attorney signature.

The document identifies the reporting person as a director and records the sale date and exact price, satisfying standard Form 4 requirements. The signature by a power of attorney is properly disclosed. There is no disclosure of a Rule 10b5-1 plan or other planned-sale notation, and the filing contains no information about the reasons for the sale. From a governance and compliance perspective, the form appears complete for the described transaction.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

LAUB STEVEN

(Last) (First) (Middle)

C/O RAMBUS INC.

4453 NORTH FIRST STREET, SUITE 100

(Street)

SAN JOSE CA 95134

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
RAMBUS INC [ RMBS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
08/29/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/29/2025		S		2,261	D	$78.724(1)	6,796	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. All shares sold at an exact price of $78.72400.

	/s/ Brian Wu, by power of attorney	09/02/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did the RMBS Form 4 filed by Steven Laub report?

The Form 4 reports a sale of 2,261 Rambus common shares on 08/29/2025 at a price of $78.72400, leaving 6,796 shares beneficially owned.

Was the Form 4 filed by more than one reporting person for RMBS?

No; the form indicates it was filed by one reporting person.

Who signed the RMBS Form 4 and when was it signed?

The Form 4 was signed by Brian Wu by power of attorney on 09/02/2025.

Does the filing show any derivative transactions for RMBS?

No; Table II for derivative securities is empty and only a non-derivative sale is reported.

Does the Form 4 state that the sale was made under a 10b5-1 plan?

No; the filing does not check or state that the transaction was pursuant to a Rule 10b5-1 plan.