Emiko Higashi files Form 144 to sell 10,000 RMBS shares

Emiko Higashi filed a Form 144 disclosing a proposed sale of 10,000 common shares through Morgan Stanley Smith Barney LLC with an entry dated 06/02/2026.

Rhea-AI Filing Summary

Emiko Higashi filed a Form 144 disclosing a proposed sale of 10,000 common shares through Morgan Stanley Smith Barney LLC with an entry dated 06/02/2026. The filing also lists a sale of 5,000 shares on 05/26/2026 for $787,850.50 and multiple restricted stock grants with grant dates and quantities.

Insights

Securities Compliance Counsel

Form 144 filed for proposed resale and recent sale reported.

The filing records a proposed resale of 10,000 common shares via Morgan Stanley Smith Barney LLC and documents a prior disposition of 5,000 shares on 05/26/2026 for $787,850.50. It also itemizes multiple restricted stock grants by grant date and quantity.

Reporting is procedural: this notice permits a public resale under Rule 144; cash‑flow treatment and exact distribution methods are not detailed in the excerpt. Subsequent confirmations of transaction settlements will appear in follow‑on exchange reports or broker confirmations.

Key Figures

Proposed resale: 10,000 shares Recent sale: 5,000 shares Proceeds reported: $787,850.50 +3 more

6 metrics

Proposed resale 10,000 shares entry dated 06/02/2026

Recent sale 5,000 shares sold on 05/26/2026 for $787,850.50

Proceeds reported $787,850.50 sale on 05/26/2026

Restricted stock grant 5,408 shares grant date 04/01/2023

Restricted stock grant 2,972 shares grant date 04/01/2025

Restricted stock grant 791 shares grant date 04/01/2021

Key Terms

Restricted Stock, Form 144, Broker-dealer

3 terms

Restricted Stock financial

"Common | 04/01/2023 | Restricted Stock | Issuer | | | 5408"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

Form 144 regulatory

"144: Securities Sold During The Past 3 Months"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Broker-dealer financial

"Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza"

A broker-dealer is a licensed firm or individual that both executes trades on behalf of clients (acting as a broker) and buys or sells securities for its own account (acting as a dealer). Investors care because broker-dealers provide the plumbing of markets — they place orders, hold or move cash and securities, offer research or advice, and their stability and fees directly affect trade execution, costs, and the safety of client funds; think of them as a combined travel agent and taxi for your investments.

FAQ

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

What did Emiko Higashi disclose on Form 144 for RMBS?

Direct answer: The filing discloses a proposed sale of 10,000 common shares and reports a sale of 5,000 shares on 05/26/2026 for $787,850.50. Context: It lists the broker as Morgan Stanley Smith Barney LLC and multiple restricted stock grant dates and quantities.

How many shares were sold in the past three months for RMBS?

Direct answer: The document records a sale of 5,000 shares on 05/26/2026 with proceeds of $787,850.50. Context: That sale is presented under the "Securities Sold During The Past 3 Months" section associated with Emiko Higashi.

Which broker is handling the proposed resale in the Form 144?

Direct answer: The broker listed is Morgan Stanley Smith Barney LLC at 1 New York Plaza, 8th Floor, New York, NY. Context: The filing shows the broker line adjacent to the proposed sale details and the date 06/02/2026.

Does the filing list restricted stock holdings for the seller?

Direct answer: Yes; the filing lists multiple restricted stock entries with grant dates and quantities such as 5,408 (04/01/2023), 2,972 (04/01/2025), and others. Context: Each line shows grant date and the number of restricted shares associated with the seller.

Does the Form 144 show the timing or final settlement of the proposed sale?

Direct answer: The filing shows a dated entry of 06/02/2026 adjacent to the proposed sale but does not provide settlement confirmation. Context: Form 144 is a notice of proposed resale; final settlement details are not included in the provided excerpt.

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

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Accepted by SEC EDGAR 06/02/2026 - 04:35 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001318086
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	RAMBUS INC.
SEC File Number	000-22339
Address of Issuer	4453 North First Street Suite 100 San Jose CALIFORNIA 95134
Phone	(408) 462-8000
Name of Person for Whose Account the Securities are To Be Sold	EMIKO HIGASHI
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	10000	1605000.00	108136967	06/02/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	04/01/2023	Restricted Stock	Issuer			5408	04/01/2023	Not Applicable
Common	04/01/2022	Restricted Stock	Issuer			410	04/01/2022	Not Applicable
Common	04/01/2022	Restricted Stock	Issuer			128	04/01/2022	Not Applicable
Common	04/01/2025	Restricted Stock	Issuer			2972	04/01/2025	Not Applicable
Common	04/01/2021	Restricted Stock	Issuer			791	04/01/2021	Not Applicable
Common	04/03/2024	Restricted Stock	Issuer			291	04/03/2024	Not Applicable

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
EMIKO HIGASHI 4453 North First Street Suite 100 San Jose CA 95134	Common	05/26/2026	5000	787850.50

144: Remarks and Signature

Remarks
Date of Notice	06/02/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Emiko Higashi
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)