Howell Stephen Mitchell Jr. — SEC Form 4 filings
SEC reporting owner CIK 2025334. 7 Form 4 filings on record with FilingPulse; latest filed 2026-08-14.
Transaction summary — filings shown
Covers all 7 filings on record, filed 2024-07-03 to 2026-08-14. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 13.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| Riot Platforms, Inc. (RIOT) | COO | 7 | — | — | 13 |
Form 4 filings — Howell Stephen Mitchell Jr.
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-08-14 | 4 | Riot Platforms, Inc. (RIOT) | Gift (G): 21,198 @ $0 | EDGAR |
| 2026-08-04 | 4 | Riot Platforms, Inc. (RIOT) | Tax withholding (F): 153,162 @ $20.17 | EDGAR |
| 2026-07-06 | 4 | Riot Platforms, Inc. (RIOT) | Tax withholding (F): 21,966 @ $23.96 | EDGAR |
| 2026-01-05 | 4 | Riot Platforms, Inc. (RIOT) | Tax withholding (F): 29,482 @ $12.67 · Grant/award (A): 197,316 @ $0 · Grant/award (A): 394,632 @ $0 | EDGAR |
| 2025-10-10 | 4/A | Riot Platforms, Inc. (RIOT) | Tax withholding (F): 20,345 @ $11.27 | EDGAR |
| 2025-07-03 | 4 | Riot Platforms, Inc. (RIOT) | Tax withholding (F): 20,345 @ $11.27 · Grant/award (A): 221,827 @ $0 · Grant/award (A): 443,656 @ $0 | EDGAR |
| 2024-07-03 | 4 | Riot Platforms, Inc. (RIOT) | Tax withholding (F): 3,188 @ $9.95 · Grant/award (A): 125,628 @ $0 · Grant/award (A): 251,256 @ $0 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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