F
$ Value
$961K
Shares
5,178
Price
$186
Filed
Jun 4
Insider
Name
Nemser Earl H
Title
Vice Chairman
CIK
0001391400
Roles
Director
Officer
Transaction Details
Transaction Date
2025-05-09
Code
F
Table
Non-Derivative
Ownership
Direct
Equity Swap
No
Shares After
107,078
Footnotes
The price represents the closing price of the issuer's Class A common stock as of May 9, 2025, the vesting date. | This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the amended 2007 Stock Incentive Plan ("Plan") and (b) unvested restricted stock units that were awarded under the Plan. | Represents number of securities owned by EN Holdings LLC, which is owned by the reporting person and his affiliates.
Filing Info
Nemser Earl H's History
| Date | Ticker | Type | Value |
|---|---|---|---|
| 2026-01-27 | IBKR | ▼ | $3.0M |
| 2026-01-27 | IBKR | ▼ | $1.6M |
| 2026-01-26 | IBKR | ▼ | $4.6M |
| 2026-01-26 | IBKR | ▼ | $2.4M |
| 2026-01-26 | IBKR | ▼ | $242K |
| 2026-01-23 | IBKR | ▼ | $6.6M |
| 2026-01-23 | IBKR | ▼ | $4.7M |
| 2026-01-22 | IBKR | ▼ | $7.7M |
| 2026-01-01 | IBKR | A | $25K |
| 2025-12-31 | IBKR | A | $0 |
Other Insiders at IBKR (90d)
| Insider | Bought | Sold | Last |
|---|---|---|---|
| Conkling Lori A | $7K | — | 2026-04-01 |
|
Nemser Earl H
Vice Chairman
|
— | $30.7M | 2026-01-27 |
|
Brody Paul Jonathan
Chief Financial Officer
|
— | — | 2026-01-01 |
|
Galik Milan
Chief Executive Officer
|
— | — | 2026-01-01 |
| Harris Lawrence E | — | — | 2026-01-01 |
| Bright Jill | — | — | 2026-01-01 |
| Peterffy William | — | — | 2026-01-01 |
| Yuen Nicole | — | — | 2026-01-01 |
| Repetto Richard H | — | — | 2026-01-01 |