Riot Platforms (RIOT) SVP and CAO sells 37,616 shares under 10b5-1 plan

Rhea-AI Filing Summary

Riot Platforms, Inc. senior vice president and chief accounting officer Ryan D. Werner sold 37,616 shares of common stock on May 27, 2026 in an open-market transaction at a weighted average price of $26.50 per share under a pre-arranged Rule 10b5-1 trading plan, and now directly holds 952,798 shares.

Insider Trade Summary 10b5-1

Net Seller: 37,616 shares ($996,824)

Net Sell 1 txn

Insider Werner Ryan D.

Role SVP, CAO

Sold 37,616 shs ($997K)

Type	Security	Shares	Price	Value
Sale	Common Stock	37,616	$26.50	$997K

Holdings After Transaction: Common Stock — 952,798 shares (Direct, null)

Footnotes (1)

1. The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 2, 2025. These shares were sold on the indicated date in a series of multiple transactions at prices ranging from $26.50 to $26.53, inclusive, per share. The price reported above reflects the weighted average sales price. The Reporting Person undertakes to provide, upon request by the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transactions were effected.

Key Figures

Shares sold: 37,616 shares Weighted average sale price: $26.50 per share Price range of sales: $26.50–$26.53 per share +1 more

4 metrics

Shares sold 37,616 shares Open-market sale on May 27, 2026

Weighted average sale price $26.50 per share Common stock sale on May 27, 2026

Price range of sales $26.50–$26.53 per share Multiple transactions on sale date

Shares owned after transaction 952,798 shares Direct holdings following May 27, 2026 sale

Key Terms

Rule 10b5-1 trading plan, open-market sale, weighted average sales price, Form 4

4 terms

Rule 10b5-1 trading plan financial

"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

open-market sale financial

"transaction_action: open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

weighted average sales price financial

"The price reported above reflects the weighted average sales price"

Form 4 regulatory

"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan"

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.

Form 4 Insider Transactions: What Each Field Means →

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).

X

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^*

Werner Ryan D.

(Last) (First) (Middle)

C/O RIOT PLATFORMS, INC.

3855 AMBROSIA STREET, SUITE 301

(Street)

CASTLE ROCK COLORADO 80109

(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)
	SVP, CAO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/27/2026

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	05/27/2026		S(1)		37,616	D	$26.5(2)	952,798	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 sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 2, 2025.

2. These shares were sold on the indicated date in a series of multiple transactions at prices ranging from $26.50 to $26.53, inclusive, per share. The price reported above reflects the weighted average sales price. The Reporting Person undertakes to provide, upon request by the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transactions were effected.

	/s/ Tanya McGill, Attorney-in-Fact for Ryan Werner	05/29/2026
	** 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)

FAQ

What insider transaction did Riot Platforms (RIOT) report for Ryan D. Werner?

Riot Platforms reported that SVP and CAO Ryan D. Werner sold 37,616 shares of common stock. The transaction was an open-market sale executed on May 27, 2026 at a weighted average price of $26.50 per share under a Rule 10b5-1 trading plan.

At what price were the RIOT shares sold in Ryan D. Werner’s recent Form 4?

The reported sale used a weighted average price of $26.50 per share. Footnotes state individual trades occurred in multiple transactions between $26.50 and $26.53 per share, with full details available upon request from the issuer, the SEC staff, or Riot security holders.

How many Riot Platforms (RIOT) shares does Ryan D. Werner hold after this sale?

After the reported sale, Ryan D. Werner directly holds 952,798 shares of Riot Platforms common stock. This figure, disclosed in the Form 4, shows that the 37,616 shares sold represent a relatively small portion of his overall direct equity position in the company.

Was the RIOT insider sale by Ryan D. Werner under a Rule 10b5-1 plan?

Yes. The footnotes explain that the sales were executed under a Rule 10b5-1 trading plan. This plan was adopted by Ryan D. Werner on December 2, 2025, indicating the transactions were pre-arranged rather than newly timed discretionary market sales.

What role does Ryan D. Werner hold at Riot Platforms (RIOT)?

Ryan D. Werner is identified as a senior vice president and chief accounting officer of Riot Platforms. His status as an officer makes his equity transactions reportable on Form 4, providing public visibility into his trading activity and post-transaction ownership levels in the company.