$ Value
$25K
Shares
389
Price
$64
Filed
Jan 7
Insider
Name
Nemser Earl H
Title
Vice Chairman
CIK
0001391400
Roles
Transaction Details
Transaction Date
2025-12-31
Code
A
Table
Non-Derivative
Ownership
Direct
Equity Swap
No
Shares After
451,441
Footnotes
This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 20% on or about 5/9/2026 and 20% on each of the first four anniversaries of 5/9/2026. | This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the Plan and (b) unvested restricted stock units that were awarded under the Plan. | This represents an annual grant of restricted stock units under the Plan for being a member of the issuer's Board of Directors, which vested immediately on 12/31/2025. | The price represents the closing price of the issuer's Class A common stock on December 31, 2025. | 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 |