RIGEL director granted 5,750 RSUs in stock award

RIGEL PHARMACEUTICALS INC director Walter H. Moos received an equity award.

Rhea-AI Filing Summary

RIGEL PHARMACEUTICALS INC director Walter H. Moos received an equity award. On 2026-05-15, he was granted 5,750 shares of Common Stock at a grant price of $0.00 per share through a Restricted Stock Unit (RSU) award.

The footnote states these shares will be acquired only when the RSUs fully vest on the date prior to the company’s next Annual Meeting, as long as he continues serving on the Board of Directors. After this award, his direct holdings are 18,472 Common Stock shares.

Insider Trade Summary

Grant/Award: 5,750 shares

Grant/Award 1 txn

Insider MOOS WALTER H

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	5,750	$0.00	$0.00

Holdings After Transaction: Common Stock — 18,472 shares (Direct)

Footnotes (1)

1. F1. The shares of Common Stock are to be acquired upon the vesting of a Restricted Stock Unit award granted to the Reporting Person. The Restricted Stock Units shall fully vest on the date prior to the Company's next Annual Meeting, subject to the Reporting Person's continuous service on the Company's Board of Directors.

Key Figures

RSU shares granted: 5,750 shares Grant price: $0.00 per share Shares after transaction: 18,472 shares +1 more

4 metrics

RSU shares granted 5,750 shares Restricted Stock Unit award on 2026-05-15

Grant price $0.00 per share RSU award to director

Shares after transaction 18,472 shares Common Stock directly held following award

Vesting timing Date prior to next Annual Meeting Full vesting if board service continues

Key Terms

Restricted Stock Unit, Annual Meeting, Board of Directors, Common Stock

4 terms

Restricted Stock Unit financial

"The shares of Common Stock are to be acquired upon the vesting of a Restricted Stock Unit award granted to the Reporting Person."

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

Annual Meeting financial

"The Restricted Stock Units shall fully vest on the date prior to the Company's next Annual Meeting, subject to the Reporting Person's continuous service..."

A company's annual meeting is a yearly gathering where owners (shareholders) and the board review performance, ask questions, and vote on key matters like electing directors, approving auditor choices, and sometimes setting pay or dividend policies. For investors it matters because decisions made and votes cast can change who runs the company, influence strategy and payouts, and affect the value or direction of their investment—similar to a homeowners’ meeting where rules and leaders that shape your property’s value are decided.

Board of Directors financial

"...subject to the Reporting Person's continuous service on the Company's Board of Directors."

The Board of Directors is a group of people chosen by a company's owners to help make big decisions and oversee how the company is run. They act like a team of advisors or managers, making sure the company stays on track and meets its goals. Their choices can influence the company's success and how it grows.

Common Stock financial

"The shares of Common Stock are to be acquired upon the vesting of a Restricted Stock Unit award..."

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.

FAQ

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

What insider transaction did RIGEL (RIGL) director Walter H. Moos report?

Walter H. Moos reported an equity award of 5,750 shares of RIGEL Common Stock. The award was granted as Restricted Stock Units at a grant price of $0.00 per share and will convert into shares once vesting conditions tied to board service are met.

How many RIGEL (RIGL) shares does Walter H. Moos hold after this Form 4?

After the reported RSU award, Walter H. Moos holds 18,472 shares of RIGEL Common Stock directly. This figure reflects his position following the grant and helps investors gauge the scale of the award relative to his overall reported ownership.

What are the vesting conditions for Walter H. Moos’s RIGEL Restricted Stock Units?

The RSU award for 5,750 RIGEL shares will fully vest on the date prior to the company’s next Annual Meeting. Vesting is conditioned on Walter H. Moos maintaining continuous service on RIGEL’s Board of Directors through that date, according to the footnote.

Was Walter H. Moos’s RIGEL share award a market purchase or a compensation grant?

The filing describes the transaction as a grant or award acquisition, not a market purchase. The 5,750 shares come from a Restricted Stock Unit award with a $0.00 per share grant price, indicating compensation-related equity rather than an open-market buy.

Does this RIGEL (RIGL) Form 4 show any insider share sales?

No sales are reported in this Form 4 excerpt. It shows only one acquisition transaction: a grant of 5,750 Restricted Stock Units that will settle into RIGEL Common Stock upon vesting, with total direct holdings reported at 18,472 shares after the award.

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

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Accepted by SEC EDGAR 05/19/2026 - 08:50 PM Learn about SEC filing dates

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^*

MOOS WALTER H

(Last) (First) (Middle)

RIGEL PHARMACEUTICALS, INC.

611 GATEWAY BLVD, SUITE 900

(Street)

SOUTH SAN FRANCISCO CALIFORNIA 94080

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
RIGEL PHARMACEUTICALS INC [ RIGL ]

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)
05/15/2026

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	05/15/2026		A		5,750(1)	A	$0	18,472	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 of Common Stock are to be acquired upon the vesting of a Restricted Stock Unit award granted to the Reporting Person. The Restricted Stock Units shall fully vest on the date prior to the Company's next Annual Meeting, subject to the Reporting Person's continuous service on the Company's Board of Directors.

	/s/ Raymond Furey (Attorney-in-Fact)	05/19/2026
	** 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)