Rambus (RMBS) director Steven Laub sells 1,500 shares in open-market trade

Rhea-AI Filing Summary

Rambus Inc. director Steven Laub sold Common Stock in an open-market transaction. On May 7, 2026, he sold 1,500 shares at a weighted average price of $125.5195 per share, with individual trade prices ranging from $125.49 to $125.52. After the sale, he directly owned 7,519 shares of Rambus Common Stock.

Insights

Equity compensation and insider-trading analyst

Routine open-market sale of a portion of a director’s holdings.

Director Steven Laub sold 1,500 shares of Rambus Inc. Common Stock in the open market at a weighted average price of $125.5195 per share. The transaction used code S, which indicates a standard sale.

Following the sale, he held 7,519 shares directly, so the trade represents only part of his reported equity position. No derivative exercises, tax withholding, or gifts were reported, and the footnote simply clarifies the weighted-average pricing range of $125.49 to $125.52.

From a governance and ownership perspective, this appears as a modest, straightforward disposition rather than a structural change in insider ownership. The filing does not reference any Rule 10b5-1 trading plan, and there are no remaining derivative positions disclosed in this report.

Insider Trade Summary

Net Seller: 1,500 shares ($188,279)

Net Sell 1 txn

Insider LAUB STEVEN

Role null

Sold 1,500 shs ($188K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,500	$125.5195	$188K

Holdings After Transaction: Common Stock — 7,519 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares sold: 1,500 shares Weighted average sale price: $125.5195 per share Post-transaction holdings: 7,519 shares +2 more

5 metrics

Shares sold 1,500 shares Open-market sale on May 7, 2026

Weighted average sale price $125.5195 per share Common Stock sale by director

Post-transaction holdings 7,519 shares Shares directly owned after sale

Sale price range $125.49–$125.52 per share Range of individual trade prices in sale

Net buy/sell shares -1,500 shares Net effect of reported transactions

Key Terms

open-market sale, weighted average price, Common Stock, transaction code S

4 terms

open-market sale financial

"transaction_action": "open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

weighted average price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

Common Stock financial

"security_title": "Common Stock""

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.

transaction code S financial

"transaction_code": "S""

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).

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 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)
05/07/2026

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	05/07/2026		S		1,500	D	$125.5195(1)	7,519	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 $125.49 to $125.52, 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	05/11/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Rambus (RMBS) director Steven Laub report?

Director Steven Laub reported selling 1,500 shares of Rambus Common Stock in an open-market transaction. The sale used code S, indicating a standard sale in the market rather than option exercise, tax withholding, or gift activity.

At what price did Steven Laub sell Rambus (RMBS) shares?

Steven Laub sold his Rambus shares at a weighted average price of $125.5195 per share. Individual trades occurred in multiple transactions within a narrow range from $125.49 to $125.52 per share, according to the Form 4 footnote disclosure.

How many Rambus (RMBS) shares does Steven Laub hold after this sale?

After selling 1,500 shares, Steven Laub directly holds 7,519 shares of Rambus Common Stock. This post-transaction figure, reported in the Form 4, shows he retained a meaningful equity position in the company following the open-market sale.

Was Steven Laub’s Rambus (RMBS) trade an open-market sale or option exercise?

The filing classifies Steven Laub’s transaction as an open-market sale of Common Stock, with transaction code S. There were no associated derivative transactions, option exercises, or conversions reported in the filing’s derivative section or transaction summary.

Does the Rambus (RMBS) Form 4 mention a Rule 10b5-1 trading plan?

The Form 4 footnote for Steven Laub’s transaction discusses only the weighted average sale price and trade range. It does not state that the sale was made under a Rule 10b5-1 trading plan or any other pre-arranged trading program.