Brian Eliot Peierls is identified as a beneficial shareholder with holdings reported on Schedule 13G filed February 10, 2017, including 273,742 shares of common stock, 5,002 shares issuable upon warrant exercise, and indirect holdings through The Peierls Foundation, Inc. He serves as a fiduciary of trusts holding company securities. The source carries no fuller biography regarding his professional role, employment history, or board service.
Biography extracted from Riot DEF 14A filed 2017-07-10 View cached copy (2026-09-27)Live source ↗
Roles
Contiguous filings for the same role are collapsed into a single tenure span. Click a row to see the underlying filings.
| Company | Role | Tenure | Filings |
|---|---|---|---|
| Riot | 10%+ Owner | 2005-05 → present (21y 6mo) | 3 |
Show 3 underlying filings | |||
Insider transactions
Totals for this person
| Bucket | Invested (shares) | Invested (USD) | Divested (shares) | Divested (USD) | Net direction | Txns | Invested @ last price | Divested @ last price |
|---|---|---|---|---|---|---|---|---|
| All time | 2,103,946 | $2.78M | - | $0 | ↑ Invested $2.78M | 6 | $26.95M | $0 |
| 2007 | 2,055,718 | $2.78M | - | $0 | ↑ Invested $2.78M | 4 | $26.33M | $0 |
| 2005 | 48,228 | $0 | - | $0 | Flat | 2 | $617.8K | $0 |
| 2005-Q4 | 48,228 | $0 | - | $0 | Flat | 2 | $617.8K | $0 |
| 2007-Q2 | 2,055,718 | $2.78M | - | $0 | ↑ Invested $2.78M | 4 | $26.33M | $0 |
Invested = shares acquired (buys, grants, option exercises) — insider adding to the position. Divested = shares reduced (sells, dispositions, tax-withholding) — cash flowing TO the insider. Net direction shows which side wins on dollar terms in each bucket. % of holder's stake not yet computed (pending Form 3/4 holdings ingest). See methodology. The two @ last price columns restate the same share counts at the most recent share price we read (close of 2026-10-30); they are a valuation, not a cash flow, and they move every day the market does.
All transactions
| Date | Company | Kind | Shares | Amount (USD) | Value @ last price |
|---|---|---|---|---|---|
| 2007-04-17 | Riot | In/at-money option exercise | 58,000 | $78,300 | $743.0K |
| 2007-04-17 | Riot | In/at-money option exercise | 969,859 | $1,309,310 | $12.42M |
| 2007-04-17 | Riot | In/at-money option exercise · Common Stock Warrants (right to buy) | 58,000 | $78,300 | $743.0K |
| 2007-04-17 | Riot | In/at-money option exercise · Common Stock Warrants (right to buy) | 969,859 | $1,309,310 | $12.42M |
| 2005-11-23 | Riot | Other acquisition / disposition | 2,721 | - | $34.9K |
| 2005-11-23 | Riot | Other acquisition / disposition | 45,507 | - | $582.9K |