Rambus Director's Firm Sells 5,000 Shares at $105

The sale was made under a Rule 10b5-1 trading plan adopted on May 8, 2026.

Rhea-AI Filing Summary

Rambus Inc. director Charles Kissner reported that Kissner and Associates LLC sold 5,000 shares of Common Stock at $105.00 per share on September 22, 2026. The sale was made under a Rule 10b5-1 trading plan adopted on May 8, 2026. The LLC held 8,747 shares after the sale; Charles Kissner reported direct holdings of 40,545 shares.

Insider Trade Summary 10b5-1

Net Seller: 5,000 shares

Net Sell 2 txns

Insider KISSNER CHARLES

Role Director

Sold 5,000 shs ($525K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2, F3	5,000	$105.00	$525K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 8,747 shares (Indirect, See Footnote); Common Stock — 40,545 shares (Direct)

Footnotes (3)

1. F1. The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on May 8, 2026.
2. F2. All shares sold at an exact price of $105.00.
3. F3. The shares are held directly by Kissner and Associates LLC for which the Reporting Person serves as the owner of the company.

Key Figures

Shares sold: 5,000 shares Sale price: $105.00 per share Indirect shares held after sale: 8,747 shares +1 more

4 metrics

Shares sold 5,000 shares Sale on September 22, 2026

Sale price $105.00 per share Sale on September 22, 2026

Indirect shares held after sale 8,747 shares Kissner and Associates LLC after the September 22, 2026 sale

Direct shares held 40,545 shares Charles Kissner as of September 22, 2026

Key Terms

Rule 10b5-1 trading plan, non-derivative, Common Stock

3 terms

Rule 10b5-1 trading plan regulatory

"pursuant to a Rule 10b5-1 trading plan adopted"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

non-derivative financial

"Common Stock; non-derivative transaction"

Common Stock financial

"shares sold at an exact price of $105.00"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many RMBS shares did Charles Kissner sell, and at what price?

Kissner and Associates LLC sold 5,000 shares of Rambus Common Stock at $105.00 per share on September 22, 2026; the LLC held 8,747 shares after the sale.

Was the RMBS share sale made under a trading plan?

Yes. The sale was made pursuant to a Rule 10b5-1 trading plan adopted on May 8, 2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/24/2026 - 01:05 PM Accepted by SEC EDGAR 09/24/2026 - 01:04 PM Learn about SEC filing dates

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
Estimated average burden
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).

X

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^*

KISSNER CHARLES

(Last) (First) (Middle)

C/O RAMBUS INC.

4453 NORTH FIRST STREET, SUITE 100

(Street)

SAN JOSE CALIFORNIA 95134

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/22/2026

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

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

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

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	09/22/2026		S(1)		5,000	D	$105(2)	8,747	I	See Footnote(3)
Common Stock								40,545	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 sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on May 8, 2026.

2. All shares sold at an exact price of $105.00.

3. The shares are held directly by Kissner and Associates LLC for which the Reporting Person serves as the owner of the company.

	/s/ Brian Wu, by power of attorney	09/24/2026
	** 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.
* Form 4: SEC 1474 (03-26)