Insider · CIK 0001812281
William Peterffy
Files at IBKR (Interactive Brokers Group, Inc.). First filing -, latest -.
In brief
William Peterffy files SEC Form 4 as director at IBKR (Interactive Brokers Group, Inc.). No open-market trade is on file; the transactions below are grants, exercises and other rows that carry no view on the price.
A track record needs three past buys with six months of prices behind them; William Peterffy has 0, so none is measured yet.
Signals
This insider’s open-market buys and sells, scored.
Transactions
Every row this insider has filed, 4 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jan 1, 2026 | IBKR Interactive Brokers Group, Inc. | AGrant or award Class A common stock | +389 | $64.31 | $25k | 10,126 | Jan 26, 2026 |
| Dec 31, 2025 | IBKR Interactive Brokers Group, Inc. | AGrant or award Class A common stock | +389 | $64.31 | $25k | 9,737 | Jan 7, 2026 |
| Dec 31, 2024 | IBKR Interactive Brokers Group, Inc. | AGrant or award Class A common stock | +142 | $176.67 | $25k | 2,337 | Jan 7, 2025 |
| Dec 31, 2023 | IBKR Interactive Brokers Group, Inc. | AGrant or award Class A common stock | +302 | $82.90 | $25k | 2,195 | Jan 5, 2024 |
Questions about William Peterffy
Answered from the filings on this page, as of the latest one.
Is William Peterffy buying or selling?
William Peterffy has no open-market buy or sell on SEC Form 4; the filings on record are grants, exercises and other transactions.
How did William Peterffy's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and William Peterffy has 0.
Where does William Peterffy file Form 4?
William Peterffy has filed Form 4 at IBKR (Interactive Brokers Group, Inc.). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.