Stephen Mitchell Howell Jr. - 01 Jan 2026 Form 4 Insider Report for Riot Platforms, Inc. (RIOT)

Role: COO
Signature: /s/ Tanya McGill, Attorney-in-Fact for Stephen Howell
Issuer symbol: RIOT
Transactions as of: 01 Jan 2026
Net transactions value: -$373,537
Form type: 4
Filing time: 05 Jan 2026, 18:00:21 UTC
Previous filing: 10 Oct 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Howell Stephen Mitchell Jr.	COO	C/O RIOT PLATFORMS, INC., 3855 AMBROSIA STREET, SUITE 301, CASTLE ROCK	/s/ Tanya McGill, Attorney-in-Fact for Stephen Howell	05 Jan 2026	0002025334

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	RIOT	Common Stock	Tax liability	$373,537	-29,482	-2%	$12.67	1,438,786	01 Jan 2026	Direct	F1
transaction	RIOT	Common Stock	Award	$0	+197,316	+14%	$0.000000	1,636,102	01 Jan 2026	Direct	F2
transaction	RIOT	Common Stock	Award	$0	+394,632	+24%	$0.000000	2,030,734	01 Jan 2026	Direct	F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents shares withheld by the Issuer to cover tax withholding obligations upon vesting of restricted shares of the Issuer's common stock.
F2	Represents the award of service-based restricted shares under the Issuer's Long-Term Incentive Program ("LTIP"). These shares are eligible to vest, if at all, in three approximately equal tranches as of January 1, 2027, January 1, 2028, and January 1, 2029, subject to the Reporting Person's continued service with the Issuer through each applicable vesting date.
F3	Represents an award of performance-based restricted shares under the LTIP at the maximum achievable amount of up to 200% of the award target amount of 197,316 shares. Such shares are eligible to vest, if at all, at the end of the three-year performance period from January 1, 2026 through December 31, 2028, upon certification by the Compensation and Human Resources Committee, and subject to the Reporting Persons continued service with the Issuer through January 1, 2029.