Riot Platforms COO gifts 21,198 company shares

Riot Platforms, Inc. COO Stephen Mitchell Howell Jr. reported a bona fide gift of 21,198 shares of Common Stock on August 12, 2026.

Rhea-AI Filing Summary

Riot Platforms, Inc. COO Stephen Mitchell Howell Jr. reported a bona fide gift of 21,198 shares of Common Stock on August 12, 2026. The shares were gifted to a charitable donor advised fund. Following this transfer, he directly held 1,834,408 shares of Riot Platforms Common Stock.

Insider Trade Summary

21,198 shares gifted

Gift 1 txn

Insider Howell Stephen Mitchell Jr.

Role COO

Type	Security	Shares	Price	Value
Gift	Common Stock F1	21,198	$0.00	$0.00

Holdings After Transaction: Common Stock — 1,834,408 shares (Direct)

Footnotes (1)

1. F1. Represents shares of Common Stock gifted by the Reporting Person to a charitable donor advised fund.

Key Figures

Shares gifted: 21,198 shares of Common Stock Shares owned after transaction: 1,834,408 shares of Common Stock Number of gift transactions: 1 bona fide gift

3 metrics

Shares gifted 21,198 shares of Common Stock Bona fide gift on August 12, 2026 to a charitable donor advised fund

Shares owned after transaction 1,834,408 shares of Common Stock Direct ownership by COO following the August 12, 2026 gift

Number of gift transactions 1 bona fide gift Single reported gift transaction in this Form 4

Key Terms

bona fide gift, donor advised fund, Form 4

3 terms

bona fide gift financial

"The transaction code description is listed as a bona fide gift."

A bona fide gift is a genuine, voluntary transfer of money, property, or benefits from one party to another made without expectation of repayment, services, or hidden conditions. Investors care because such gifts can affect company disclosures, related‑party transaction rules, tax treatment, and perceived conflicts of interest; think of it like someone giving you a present with no strings attached — but on a corporate scale, auditors and regulators need to verify it really is unconditional.

donor advised fund financial

"Shares of Common Stock gifted to a charitable donor advised fund."

A donor advised fund is a charitable savings account you fund with cash or assets (including stocks) that lets you take an immediate tax benefit while recommending when and which charities receive grants over time. Think of it like a dedicated piggy bank for giving: you get tax relief when you put money in, can avoid selling appreciated securities and triggering capital gains, and still control the timing and recipients of donations, which affects tax planning, portfolio decisions, and public giving signals.

Form 4 regulatory

"Insider transaction reported on Form 4 for Riot Platforms, Inc."

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

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

What insider transaction did Riot Platforms (RIOT) report for COO Stephen Howell Jr.?

COO Stephen Mitchell Howell Jr. reported a bona fide gift of 21,198 shares of Riot Platforms Common Stock on August 12, 2026, transferring them to a charitable donor advised fund while retaining a substantial remaining stake.

How many RIOT shares did the COO gift and to whom were they directed?

He gifted 21,198 shares of Riot Platforms Common Stock. According to the disclosure, the shares were transferred to a charitable donor advised fund, characterizing the transaction as a non-sale, philanthropic disposition rather than a market trade.

How many Riot Platforms (RIOT) shares does the COO hold after the reported gift?

After the gift, Stephen Mitchell Howell Jr. directly held 1,834,408 shares of Riot Platforms Common Stock. This figure reflects his reported direct ownership position immediately following the August 12, 2026 charitable transfer.

Was the RIOT COO’s August 12, 2026 transaction a sale or a gift?

The August 12, 2026 transaction was reported as a bona fide gift, not a sale. Form 4 data classify the move as a gift of 21,198 Common Stock shares to a charitable donor advised fund, with no per-share sale price involved.

Is the RIOT COO’s Form 4 transaction under a Rule 10b5-1 trading plan?

The filing indicates the Rule 10b5-1 checkbox is not affirmed, so the transaction is not identified as occurring under a Rule 10b5-1 trading plan. It remains a discretionary, charitable gift of Common Stock.

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

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Available on EDGAR 08/14/2026 - 05:07 PM Accepted by SEC EDGAR 08/14/2026 - 05:06 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^*

Howell Stephen Mitchell Jr.

(Last) (First) (Middle)

C/O RIOT PLATFORMS, INC.

85 RIO GRANDE DRIVE, SUITE 200

(Street)

CASTLE ROCK COLORADO 80104

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/12/2026

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	08/12/2026		G		21,198(1)	D	$0	1,834,408	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. Represents shares of Common Stock gifted by the Reporting Person to a charitable donor advised fund.

	/s/ Jamie Amentler, Attorney-in-Fact for Stephen Howell	08/14/2026
	** 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)