[Form 4] Rambus Inc Insider Trading Activity

Rhea-AI Filing Summary

Rambus director Necip Sayiner reported an open-market sale of 7,500 shares of common stock on 08/08/2025 at a weighted-average price of $73.5264. The filing states the shares were sold in multiple transactions at prices ranging from $73.51 to $73.59, and the reporting person offers to provide a breakdown of the number of shares sold at each separate price on request.

Following the reported transactions, Sayiner is shown as directly owning 38,324 shares. The Form 4 shows no derivative transactions in Table II and was filed as a single reporting person disclosure.

Positive

• The filing provides transparent pricing details, including a weighted-average price and the range of trade prices ($73.51–$73.59), and offers to supply per-trade breakdowns on request
• The report explicitly shows no derivative transactions in Table II, simplifying assessment of the reporting person's exposure

Negative

• None.

Insights

Financial Analyst

TL;DR: Director sold 7,500 shares at ~$73.53; holdings now 38,324—routine Form 4 disclosure with no listed derivatives.

The report documents a direct sale of 7,500 common shares at a weighted-average price of $73.5264, with the per-trade range disclosed as $73.51–$73.59. The filing records 38,324 shares owned after the sale and lists no derivative securities. For investors, this is a standard insider sale disclosure; the filing provides transparent pricing information but does not include additional context or new corporate developments.

Corporate Governance Expert

TL;DR: The Form 4 is a compliant disclosure showing a director sale and a willingness to provide transaction-level details on request.

The reporting includes a weighted-average sale price and an explicit price range, plus an undertaking to supply per-trade quantities if requested, which supports disclosure completeness. Table II contains no derivative activity. The disclosure itself does not indicate governance changes or material corporate actions; it functions as a routine Section 16 reporting event.

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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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^*

Sayiner Necip

(Last) (First) (Middle)

C/O RAMBUS INC

4453 NORTH FIRST ST, 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)
08/08/2025

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	08/08/2025		S		7,500	D	$73.5264(1)	38,324	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. 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.

	/s/Brian Wu, by power of attorney	08/11/2025
	** 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

Who filed the Form 4 for Rambus (RMBS)?

The filing was made by director Necip Sayiner.

What transaction did the Form 4 report for RMBS?

The Form 4 reports a sale of 7,500 common shares on 08/08/2025 with a weighted-average price of $73.5264.

What price range and disclosure detail are provided in the RMBS Form 4?

The filing states trades occurred at prices ranging from $73.51 to $73.59 and the reporting person will provide a per-trade breakdown upon request.

How many RMBS shares does the reporting person own after the transaction?

After the reported sale the reporting person is shown as directly owning 38,324 shares.

Were any derivative securities reported in this RMBS Form 4?

No. Table II contains no derivative securities reported in this filing.

Who signed the Form 4 on behalf of the reporting person?

The form bears a signature executed by Brian Wu by power of attorney on behalf of the reporting person.