Stephen Mitchell Howell Jr. - 12 Aug 2026 Form 4 Insider Report for Riot Platforms, Inc. (RIOT)

Reporting relationship: COO
Issuer ticker: RIOT
Reported as of: 12 Aug 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 14 Aug 2026, 17:06:58 UTC
Prior SEC filing: 04 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ Jamie Amentler, Attorney-in-Fact for Stephen Howell

Key filing fact

Stephen Mitchell Howell Jr. filed Form 4 for Riot Platforms, Inc. (RIOT) on 14 Aug 2026.

Key facts

This page summarizes Stephen Mitchell Howell Jr.'s Form 4 filing for Riot Platforms, Inc. (RIOT).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 14 Aug 2026, 17:06.

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

CIK 0002025334 Primary reporting owner

Relationship: COO
Address: C/O RIOT PLATFORMS, INC., 85 RIO GRANDE DRIVE, SUITE 200, CASTLE ROCK
Signature: /s/ Jamie Amentler, Attorney-in-Fact for Stephen Howell
Signature date: 14 Aug 2026

Shares, units, or other non-derivative securities reported in this filing.

RIOT transaction

Gift

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Explanation of responses 1 footnote

Footnote F1

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