[Form 4/A] Riot Platforms, Inc. Amended Insider Trading Activity

Rhea-AI Filing Summary

Riot Platforms, Inc. reported an amended Form 4 showing an officer disposition of common stock. On 07/01/2025 the reporting person sold 20,345 shares at a per‑share price of $11.27, reducing their direct holdings to 802,785 shares.

The amendment filed on 07/03/2025 adds a Power of Attorney (Exhibit 24) and explains the sold shares were withheld by the issuer to cover tax withholding upon vesting of restricted shares. The form is signed by an attorney‑in‑fact on 10/10/2025.

Positive

• Transparent disclosure of the disposition and the reason for share withholding (tax obligations)
• Amendment attached Exhibit 24 (Power of Attorney), improving record completeness

Negative

• Reduction in direct holdings by 20,345 shares could modestly lower insider ownership concentration

Insights

Corporate Governance Analyst

Officer disposed 20,345 shares; amendment adds Power of Attorney.

The transaction is a disposition of 20,345 shares at $11.27 on 07/01/2025

The amendment clarifies administrative details by attaching a Power of Attorney and notes the shares were withheld to cover tax withholding on vested restricted stock; this is an administrative, not an operating, disclosure. Watch filings for additional changes in direct holdings or further amendments over the next few reporting cycles.

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).

1. Name and Address of Reporting Person^*

Howell Stephen Mitchell Jr.

(Last) (First) (Middle)

(Street)

CASTLE ROCK CO 80109

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Riot Platforms, Inc. [ RIOT ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	COO

3. Date of Earliest Transaction (Month/Day/Year)
07/01/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)
07/03/2025

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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(1)	07/01/2025		F		20,345(2)	D	$11.27	802,785	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. This Form 4 amendment is being filed solely to add the Power of Attorney, attached as Exhibit 24.

2. Represents shares withheld by the Issuer to cover tax withholding obligations upon vesting of restricted shares of the Issuer's common stock.

Remarks:

Exhibit 24 - Power of Attorney

	/s/ Tanya McGill, Attorney-in-Fact for Stephen Howell	10/10/2025
	** 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.

FAQ

What did the Riot Platforms (RIOT) Form 4/A report?

It reported a disposition of 20,345 shares by an officer on 07/01/2025 at $11.27, leaving 802,785 shares beneficially owned.

Why was the Form 4 amended for RIOT?

The amendment filed on 07/03/2025 adds a Power of Attorney (Exhibit 24) and clarifies withholding of shares to cover tax obligations upon vesting.

Who filed the Form 4/A for RIOT?

The reporting person is Stephen Mitchell Howell Jr., an officer (COO); the form is signed by an attorney‑in‑fact (Tanya McGill) on 10/10/2025.

How many shares does the reporting person own after the transaction?

The filing states 802,785 shares are beneficially owned following the reported disposition.

What was the price per share for the disposed RIOT shares?

The reported sale price was $11.27 per share for the 20,345 shares disposed.