Rambus (RMBS) director Emiko Higashi sells 5,000 common shares

Rhea-AI Filing Summary

Rambus Inc. director Emiko Higashi reported an open-market sale of 5,000 shares of Common Stock on May 26, 2026 at an exact price of $157.5701 per share. After this transaction, Higashi directly owns 59,519 shares of Rambus common stock.

Insider Trade Summary

Net Seller: 5,000 shares ($787,851)

Net Sell 1 txn

Insider Higashi Emiko

Role null

Sold 5,000 shs ($788K)

Type	Security	Shares	Price	Value
Sale	Common Stock	5,000	$157.5701	$788K

Holdings After Transaction: Common Stock — 59,519 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares sold: 5,000 shares Sale price: $157.5701 per share Shares owned after transaction: 59,519 shares +1 more

4 metrics

Shares sold 5,000 shares Open-market sale of Rambus common stock on May 26, 2026

Sale price $157.5701 per share Exact price for all 5,000 shares sold

Shares owned after transaction 59,519 shares Direct ownership following the reported sale

Net shares sold 5,000 shares Net-sell direction in transaction summary

Key Terms

Common Stock, open-market sale, Form 4, transaction code "S", +1 more

5 terms

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.

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.

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

transaction code "S" financial

"transaction_code: "S" for sale in open market"

direct ownership financial

"direct_or_indirect: "D" and ownership_type: "direct""

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^*

Higashi Emiko

(Last) (First) (Middle)

C/O RAMBUS INC

4453 NORTH FIRST ST, 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)
05/26/2026

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	05/26/2026		S		5,000	D	$157.5701(1)	59,519	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. All shares sold at an exact price of $157.5701.

	/s/Brian Wu, by power of attorney	05/27/2026
	** 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 Emiko Higashi report?

Emiko Higashi reported an open-market sale of 5,000 shares of Rambus common stock. The trade was executed at an exact price of $157.5701 per share, according to the Form 4 filing and its accompanying footnote.

At what price were Emiko Higashi’s Rambus (RMBS) shares sold?

The 5,000 shares of Rambus common stock were sold at an exact price of $157.5701 per share. A footnote to the Form 4 confirms that all shares in the reported transaction were executed at this same precise price.

How many Rambus (RMBS) shares does Emiko Higashi hold after the sale?

Following the reported transaction, Emiko Higashi directly holds 59,519 shares of Rambus common stock. This post-transaction ownership figure is shown in the Form 4 as the total shares beneficially owned after the open-market sale.

Was Emiko Higashi’s Rambus (RMBS) transaction a purchase or a sale?

The transaction was a sale of Rambus common stock. The Form 4 lists transaction code “S” and describes it as an open-market or private sale, with 5,000 shares sold at $157.5701 per share on May 26, 2026.

Does Emiko Higashi hold Rambus (RMBS) shares directly or indirectly after this Form 4?

After the transaction, Emiko Higashi’s 59,519 Rambus shares are held as direct ownership. The Form 4 marks the holding as “D” for direct, indicating the shares are not reported as indirectly owned through another entity.