NuScale director granted 17,362 stock units

NUSCALE POWER Corp director Stuart Alan Harshaw reported receiving two equity compensation awards on May 29, 2026.

Rhea-AI Filing Summary

NUSCALE POWER Corp director Stuart Alan Harshaw reported receiving two equity compensation awards on May 29, 2026. Each award consists of 8,681 restricted stock units (RSUs), with different vesting schedules.

One 8,681-unit grant vests in four equal quarterly installments over one year starting August 29, 2026. The separate one-time 8,681-unit grant vests quarterly over three years beginning the same date. Each RSU converts into one share of Class A Common Stock upon vesting, so these are non-cash, compensation-related acquisitions rather than open-market share purchases or sales.

Insider Trade Summary

Grant/Award: 17,362 shares

Grant/Award 2 txns

Insider Harshaw Stuart Alan

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Class A Common Stock	8,681	$0.00	$0.00
Grant/Award	Class A Common Stock	8,681	$0.00	$0.00

Holdings After Transaction: Class A Common Stock — 17,362 shares (Direct)

Footnotes (2)

1. F1. The reporting person received an award of 8,681 restricted stock units on May 29, 2026, which vest quarterly in four equal installments over one year, beginning on August 29, 2026. Each restricted stock unit represents the right to receive one share of Class A Common Stock upon vesting.
2. F2. The reporting person received a one-time award of 8,681 restricted stock units on May 29, 2026, which will vest quarterly over three years beginning August 29, 2026. Each restricted stock unit represents a right to receive one share of Class A Common Stock upon vesting.

Key Figures

First RSU grant: 8,681 units Second RSU grant: 8,681 units Total RSUs granted: 17,362 units +2 more

5 metrics

First RSU grant 8,681 units Restricted stock units granted May 29, 2026; one-year quarterly vesting

Second RSU grant 8,681 units One-time restricted stock unit award granted May 29, 2026; three-year quarterly vesting

Total RSUs granted 17,362 units Combined value of both RSU awards reported for the director

Vesting start date August 29, 2026 Quarterly vesting for both RSU awards begins on this date

Share conversion ratio 1 share per RSU Each restricted stock unit converts into one Class A Common share upon vesting

Key Terms

restricted stock units, Class A Common Stock, vest quarterly, one-time award

4 terms

restricted stock units financial

"received an award of 8,681 restricted stock units on May 29, 2026"

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.

Class A Common Stock financial

"represents the right to receive one share of Class A Common Stock upon vesting"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

vest quarterly financial

"which vest quarterly in four equal installments over one year"

one-time award financial

"The reporting person received a one-time award of 8,681 restricted stock units"

FAQ

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

What did NuScale Power (SMR) director Stuart Alan Harshaw report in this Form 4?

Stuart Alan Harshaw reported receiving two equity compensation awards of 8,681 restricted stock units each on May 29, 2026. These RSUs represent future rights to Class A Common Stock that vest over one year and three years, rather than immediate open-market share purchases.

How many NuScale Power (SMR) restricted stock units were granted to the director?

The director received a total of 17,362 restricted stock units, in two equal grants of 8,681 units each. One grant follows a one-year vesting schedule, while the other is a one-time award vesting over three years, both starting August 29, 2026.

What are the vesting terms of the NuScale Power (SMR) RSU grants?

One 8,681-unit RSU award vests quarterly in four equal installments over one year, beginning August 29, 2026. The second, a one-time 8,681-unit award, vests quarterly over three years from the same date, spreading share delivery over a longer period.

Do these NuScale Power (SMR) Form 4 transactions involve open-market buying or selling?

No, the transactions are coded as grant or award acquisitions with a zero price per share. They reflect compensation-related restricted stock unit grants, not open-market buying or selling of Class A Common Stock by the director.

How do the NuScale Power (SMR) RSUs convert into shares for the director?

Each restricted stock unit represents the right to receive one share of NuScale Power Class A Common Stock upon vesting. As the RSUs vest quarterly according to their schedules, the director becomes entitled to receive an equivalent number of common shares.

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

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Accepted by SEC EDGAR 06/02/2026 - 04:58 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^*

Harshaw Stuart Alan

(Last) (First) (Middle)

1100 NE CIRCLE BLVD.

SUITE 350

(Street)

CORVALLIS OREGON 97330

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
NUSCALE POWER Corp [ SMR ]

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)
05/29/2026

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
Class A Common Stock	05/29/2026		A		8,681(1)	A	$0	8,681	D
Class A Common Stock	05/29/2026		A		8,681(2)	A	$0	17,362	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 reporting person received an award of 8,681 restricted stock units on May 29, 2026, which vest quarterly in four equal installments over one year, beginning on August 29, 2026. Each restricted stock unit represents the right to receive one share of Class A Common Stock upon vesting.

2. The reporting person received a one-time award of 8,681 restricted stock units on May 29, 2026, which will vest quarterly over three years beginning August 29, 2026. Each restricted stock unit represents a right to receive one share of Class A Common Stock upon vesting.

Remarks:

	Patrick C. Cannon, attorney-in-fact for Stuart Alan Harshaw	06/02/2026
	** 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)