12 insiders reported 65 Form 4 transactions for Riot Platforms, Inc. (RIOT) over the past 18 months (most recent 2026-08-14). Recent activity: Howell Stephen Mitchell Jr. (COO) Sell 21,198 shares, Werner Ryan D. (SVP, CAO) Sell 35,430 shares, Werner Ryan D. (SVP, CAO) Sell 9,802 shares, Werner Ryan D. (SVP, CAO) Sell 2,501 shares, Les Jason (CEO) Sell 2.9M shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-14 | Howell Stephen Mitchell Jr. | COO | Sell | 21,198 | $0 |
| 2026-08-07 | Werner Ryan D. | SVP, CAO | Sell | 35,430 | $778,751 |
| 2026-08-07 | Werner Ryan D. | SVP, CAO | Sell | 9,802 | $223,682 |
| 2026-08-07 | Werner Ryan D. | SVP, CAO | Sell | 2,501 | $58,849 |
| 2026-08-04 | Les Jason | CEO | Sell | 2.9M | $58.4M |
| 2026-08-04 | Werner Ryan D. | SVP, CAO | Sell | 148,500 | $3.0M |
| 2026-08-04 | Howell Stephen Mitchell Jr. | COO | Sell | 153,162 | $3.1M |
| 2026-07-09 | Werner Ryan D. | SVP, CAO | Sell | 10,232 | $217,123 |
| 2026-07-09 | Werner Ryan D. | SVP, CAO | Sell | 7,596 | $166,580 |
| 2026-07-06 | D'Ambrosio Lance Varro | Director | Buy | 8,347 | $0 |
| 2026-07-06 | Les Jason | CEO | Sell | 101,015 | $2.4M |
| 2026-07-06 | Werner Ryan D. | SVP, CAO | Sell | 13,869 | $332,301 |
| 2026-07-06 | Leverton Jaime | Director | Buy | 8,347 | $0 |
| 2026-07-06 | Turner Michael John | Director | Buy | 8,347 | $0 |
| 2026-07-06 | Howell Stephen Mitchell Jr. | COO | Sell | 21,966 | $526,305 |
| 2026-07-06 | Mouton Douglas | Director | Buy | 8,347 | $0 |
| 2026-07-06 | Yee Colin M. | Insider | Buy | 124,823 | $0 |
| 2026-06-24 | Werner Ryan D. | SVP, CAO | Sell | 25,375 | $761,250 |
| 2026-06-24 | Les Jason | CEO | Sell | 62,703 | $1.9M |
| 2026-05-29 | Werner Ryan D. | SVP, CAO | Sell | 37,616 | $996,824 |
| 2026-05-13 | Les Jason | CEO | Sell | 175,000 | $4.4M |
| 2026-04-14 | Gibbs Jonathan | CDCO (See Remarks) | Sell | 1.1M | $0 |
| 2026-01-05 | Werner Ryan D. | SVP, CAO | Buy | 118,388 | $0 |
| 2026-01-05 | Werner Ryan D. | SVP, CAO | Sell | 9,943 | $125,978 |
| 2026-01-05 | Werner Ryan D. | SVP, CAO | Buy | 59,194 | $0 |
Source: SEC Form 4 filings · as of 2026-08-14