Rambus (RMBS) director Necip Sayiner granted 2,223 RSUs vesting 2027

Rhea-AI Filing Summary

Sayiner Necip reported acquisition or exercise transactions in this Form 4 filing.

Rambus Inc. director Necip Sayiner received an equity award of 2,223 shares of common stock on April 1, 2026. The award is in the form of restricted stock units, with each RSU representing the right to receive one share of RMBS common stock. All RSUs vest on April 1, 2027, or the first business day thereafter. Following this grant, Sayiner directly holds 33,047 shares of Rambus common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Sayiner Necip

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	2,223	$0.00	--

Holdings After Transaction: Common Stock — 33,047 shares (Direct)

Footnotes (1)

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Key Figures

RSU grant size: 2,223 shares Grant price: $0.00 per share Holdings after grant: 33,047 shares +1 more

4 metrics

RSU grant size 2,223 shares Restricted stock units granted April 1, 2026

Grant price $0.00 per share Equity award, not an open-market purchase

Holdings after grant 33,047 shares Total Rambus common stock directly owned after transaction

Vesting date April 1, 2027 All RSUs vest on this date or the first business day thereafter

Key Terms

restricted stock units, RSUs, contingent right

3 terms

restricted stock units financial

"The shares are represented by restricted stock units, or RSUs, all of which vest April 1, 2027"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

RSUs financial

"The shares are represented by restricted stock units, or RSUs, all of which vest April 1, 2027"

RSUs, or restricted stock units, are a form of company shares given to employees as part of their compensation. They are typically awarded with certain restrictions, such as a waiting period before they can be fully owned or sold, similar to earning a gift that becomes fully yours over time. For investors, RSUs can impact a company's stock offerings and reflect how much the company relies on stock-based incentives to attract and retain talent.

contingent right financial

"Each RSU represents the contingent right to receive one share of RMBS common stock"

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^*

Sayiner Necip

(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)
04/01/2026

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	04/01/2026		A		2,223(1)	A	$0	33,047	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 shares are represented by restricted stock units, or RSUs, all of which vest April 1, 2027 or the first business day thereafter. Each RSU represents the contingent right to receive one share of RMBS common stock.

	/s/Brian Wu, by power of attorney	04/03/2026
	** 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 Necip Sayiner report?

Rambus director Necip Sayiner reported receiving 2,223 restricted stock units as an equity award. The award was priced at $0 per share, indicating a compensation grant rather than a market purchase of common stock.

When do Necip Sayiner’s newly granted Rambus (RMBS) RSUs vest?

All 2,223 restricted stock units granted to Necip Sayiner vest on April 1, 2027, or the first business day thereafter. Vesting means each RSU converts into one share of Rambus common stock at that time.

How many Rambus (RMBS) shares does Necip Sayiner hold after this Form 4 transaction?

After the RSU grant, Necip Sayiner beneficially owns 33,047 shares of Rambus common stock directly. This total includes the impact of the 2,223-share equity award reported in the Form 4 filing for April 1, 2026.

What does each Rambus (RMBS) RSU granted to Necip Sayiner represent?

Each RSU granted to Necip Sayiner represents a contingent right to receive one share of Rambus common stock. The rights become actual shares only when the RSUs vest on April 1, 2027, or the next business day.

Was Necip Sayiner’s Rambus (RMBS) Form 4 transaction a market purchase or a grant?

The Form 4 reports a grant or award acquisition of 2,223 RSUs at $0 per share, not a market purchase. This reflects stock-based compensation awarded to the director instead of an open-market buy or sell transaction.