Rambus (RMBS) SVP John Shinn executes 4,556-share stock sale

Rhea-AI Filing Summary

Rambus Inc. SVP and General Counsel John Shinn reported selling 4,556 shares of Rambus common stock. The open-market sales took place on March 10, 2026 at weighted average prices of $88.6361 and $89.5450, in multiple trades within disclosed price ranges, under a Rule 10b5-1 trading plan adopted on December 2, 2025. Following these transactions, Shinn directly holds 18,467 shares of Rambus common stock.

Insider Trade Summary 10b5-1

Net Seller: 4,556 shares ($404,008)

Net Sell 2 txns

Insider Shinn John

Role SVP, General Counsel

Sold 4,556 shs ($404K)

Type	Security	Shares	Price	Value
Sale	Common Stock	4,356	$88.6361	$386K
Sale	Common Stock	200	$89.545	$18K

Holdings After Transaction: Common Stock — 18,667 shares (Direct)

Footnotes (1)

1. The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on December 2, 2025. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $88.36 to $89.16, 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.44 to $89.65, 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.

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Form 4 Insider Transactions: What Each Field Means →

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^*

Shinn John

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP, General Counsel

3. Date of Earliest Transaction (Month/Day/Year)
03/10/2026

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	03/10/2026		S(1)		4,356	D	$88.6361(2)	18,667	D
Common Stock	03/10/2026		S(1)		200	D	$89.545(3)	18,467	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 December 2, 2025.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $88.36 to $89.16, 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.

3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.44 to $89.65, 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	03/11/2026
	** 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.

FAQ

What insider stock transaction did Rambus (RMBS) SVP John Shinn report?

Rambus SVP and General Counsel John Shinn reported selling 4,556 shares of common stock in open-market transactions on March 10, 2026. The filing shows the sales occurred at weighted average prices of $88.6361 and $89.5450 per share in multiple trades.

At what prices did John Shinn sell Rambus (RMBS) shares in this Form 4?

The Form 4 lists weighted average sale prices of $88.6361 and $89.5450 per share. Footnotes explain the trades occurred in multiple transactions, with prices ranging from $88.36 to $89.16 and $89.44 to $89.65, respectively, on March 10, 2026.

How many Rambus (RMBS) shares does John Shinn hold after the reported sales?

After the reported open-market sales, John Shinn directly holds 18,467 shares of Rambus common stock. This post-transaction holding is disclosed in the Form 4 as the total number of non-derivative shares beneficially owned following the March 10, 2026 transactions.

Were John Shinn’s Rambus (RMBS) share sales made under a Rule 10b5-1 plan?

Yes. A footnote states the sale reported was effected pursuant to a Rule 10b5-1 trading plan adopted on December 2, 2025. Such pre-arranged plans allow insiders to schedule trades in advance, helping separate trading decisions from subsequent market-sensitive information.

What type of transaction is reported in John Shinn’s Rambus (RMBS) Form 4?

The Form 4 reports open-market sales of Rambus common stock, coded as “S” transactions. These are non-derivative dispositions, meaning existing common shares were sold rather than options or other derivatives being exercised or converted in connection with the trades.

Does John Shinn’s Rambus (RMBS) Form 4 mention how many trades occurred within the price ranges?

The filing notes the reported prices are weighted averages for shares sold in multiple transactions within specified price ranges. It also states Shinn will provide full information on the number of shares sold at each separate price upon request to the company, security holders, or the SEC.