Insider holders · CIK 0001381197
Interactive Brokers Group, Inc. · IBKR
Every insider with a reported Table I holding at this company, ranked by their last-reported share count. A balance is only as fresh as its filing — the report date sits next to every row on purpose. ← Back to activity
| Insider | Direct shares | Indirect shares | Total reported | Last report (ET) | From |
|---|---|---|---|---|---|
| Earl H NemserVice Chairman | 429,344 | 803,568 | 1,232,912 | Aug 4, 2026 · 4:27 pm EDT | Form 4 |
| Thomas AJ FrankChief Information Officer | 328,714 | 815,458 | 1,144,172 | Jan 3, 2019 · 4:07 pm EST | Form 4 |
| Milan GalikPresident | 955,775 | 0 | 955,775 | Jan 3, 2019 · 4:13 pm EST | Form 4 |
| Paul Jonathan BrodyChief Financial Officer | 650,757 | 0 | 650,757 | Jan 3, 2019 · 4:04 pm EST | Form 4 |
| Denis MendoncaChief Accounting Officer | 16,352 | — | 16,352 | Jan 3, 2019 · 4:01 pm EST | Form 4 |
| Wayne Hilbert WagnerDirector | 2,573 | — | 2,573 | Jan 5, 2015 · 7:11 pm EST | Form 4 |
| Lori A ConklingDirector | 2,559 | — | 2,559 | Sep 2, 2026 · 4:01 pm EDT | Form 4 |
| John M. DamgardDirector | 1,873 | — | 1,873 | Jan 3, 2019 · 4:16 pm EST | Form 4 |
| Gary KatzDirector | 1,267 | — | 1,267 | Apr 6, 2018 · 4:54 pm EDT | Form 4/A |
| Thomas PeterffyChief Executive Officer | 311 | — | 311 | May 10, 2017 · 4:54 pm EDT | Form 4 |
Balances come from each insider’s most recent filing that reports a Table I holding; an insider who left the company years ago still appears with their last-known figure and its date. Indirect totals collapse multiple vehicles (trusts, LLCs) into one number — open the filing for the breakdown. Shares as filed, not split-adjusted.