Nemser Earl H — SEC Form 4 filings
SEC reporting owner CIK 1391400. 26 Form 4 filings on record with FilingPulse; latest filed 2026-08-04.
Transaction summary — filings shown
Covers all 26 filings on record, filed 2024-01-05 to 2026-08-04. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 51 legs across 14 filings — 1,000,000 shares, $77,019,430 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 15.
- Largest priced transaction: sale of 153,000 shares @ $67.39 ($10,310,670) in Interactive Brokers Group, Inc., filed 2025-08-14.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| Interactive Brokers Group, Inc. (IBKR) | Vice Chairman, Director | 26 | — | 51 legs · 1,000,000 sh · $77,019,430 | 15 |
Form 4 filings — Nemser Earl H
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-08-04 | 4 | Interactive Brokers Group, Inc. (IBKR) | Grant/award (A): 803,568 @ $87.99 | EDGAR |
| 2026-05-28 | 4 | Interactive Brokers Group, Inc. (IBKR) | Tax withholding (F): 22,486 @ $84.42 | EDGAR |
| 2026-01-28 | 4 | Interactive Brokers Group, Inc. (IBKR) | Sale (S): 60,882 @ $75.83 · Sale (S): 30,817 @ $76.72 · Sale (S): 3,101 @ $77.98 · Sale (S): 39,731 @ $75.07 · Sale (S): 20,469 @ $75.75 | EDGAR |
| 2026-01-26 | 4 | Interactive Brokers Group, Inc. (IBKR) | Grant/award (A): 389 @ $64.31 | EDGAR |
| 2026-01-26 | 4 | Interactive Brokers Group, Inc. (IBKR) | Sale (S): 100,000 @ $76.81 · Sale (S): 84,935 @ $77.65 · Sale (S): 60,065 @ $78.14 | EDGAR |
| 2026-01-07 | 4 | Interactive Brokers Group, Inc. (IBKR) | Grant/award (A): 23,240 @ $0 · Grant/award (A): 389 @ $64.31 | EDGAR |
| 2025-08-15 | 4 | Interactive Brokers Group, Inc. (IBKR) | Sale (S): 33,379 @ $63.86 · Sale (S): 20,521 @ $64.22 | EDGAR |
| 2025-08-14 | 4 | Interactive Brokers Group, Inc. (IBKR) | Sale (S): 153,000 @ $67.39 · Sale (S): 41,086 @ $67.88 · Sale (S): 4,600 @ $63.75 · Sale (S): 200 @ $64.19 · Sale (S): 200 @ $66.09 · Sale (S): 2,400 @ $66.77 · +1 more | EDGAR |
| 2025-08-12 | 4 | Interactive Brokers Group, Inc. (IBKR) | Sale (S): 10,200 @ $65.60 · Sale (S): 2,641 @ $65.94 · Sale (S): 12,841 @ $66.09 | EDGAR |
| 2025-08-08 | 4 | Interactive Brokers Group, Inc. (IBKR) | Sale (S): 12,641 @ $63.47 · Sale (S): 200 @ $64.16 · Sale (S): 12,400 @ $63.94 · Sale (S): 441 @ $64.35 | EDGAR |
| 2025-08-06 | 4 | Interactive Brokers Group, Inc. (IBKR) | Sale (S): 12,841 @ $64.54 · Sale (S): 11,041 @ $63.64 · Sale (S): 1,800 @ $64.84 | EDGAR |
| 2025-08-04 | 4 | Interactive Brokers Group, Inc. (IBKR) | Sale (S): 12,441 @ $66.18 · Sale (S): 2,200 @ $66.71 · Sale (S): 1,200 @ $62.79 · Sale (S): 7,441 @ $63.94 · Sale (S): 3,200 @ $64.71 · Sale (S): 1,000 @ $65.66 | EDGAR |
| 2025-08-01 | 4 | Interactive Brokers Group, Inc. (IBKR) | Grant/award (A): 400,000 @ $66.22 | EDGAR |
| 2025-08-01 | 4 | Interactive Brokers Group, Inc. (IBKR) | Sale (S): 32,386 @ $66.32 · Sale (S): 7,400 @ $66.64 | EDGAR |
| 2025-07-30 | 4 | Interactive Brokers Group, Inc. (IBKR) | Sale (S): 100 @ $65.90 | EDGAR |
| 2025-06-24 | 4 | Interactive Brokers Group, Inc. (IBKR) | Gift (G): 500 @ $0 | EDGAR |
| 2025-06-04 | 4/A | Interactive Brokers Group, Inc. (IBKR) | Tax withholding (F): 5,178 @ $185.60 | EDGAR |
| 2025-06-03 | 4 | Interactive Brokers Group, Inc. (IBKR) | Tax withholding (F): 5,178 @ $185.60 | EDGAR |
| 2025-01-07 | 4 | Interactive Brokers Group, Inc. (IBKR) | Grant/award (A): 7,763 @ $0 · Grant/award (A): 142 @ $176.67 | EDGAR |
| 2024-07-29 | 4 | Interactive Brokers Group, Inc. (IBKR) | Grant/award (A): 100,000 @ $118.57 | EDGAR |
| 2024-05-24 | 4 | Interactive Brokers Group, Inc. (IBKR) | Tax withholding (F): 4,419 @ $119.13 | EDGAR |
| 2024-02-23 | 4 | Interactive Brokers Group, Inc. (IBKR) | Sale (S): 5,000 @ $104.86 · Sale (S): 5,000 @ $107.01 | EDGAR |
| 2024-02-20 | 4 | Interactive Brokers Group, Inc. (IBKR) | Sale (S): 2,100 @ $102.02 · Sale (S): 3,400 @ $102.83 · Sale (S): 500 @ $103.57 · Sale (S): 4,000 @ $104.92 · Sale (S): 2,906 @ $105.35 · Sale (S): 2,094 @ $106.01 | EDGAR |
| 2024-02-15 | 4 | Interactive Brokers Group, Inc. (IBKR) | Sale (S): 20,809 @ $100.73 · Sale (S): 29,191 @ $101.31 · Sale (S): 10,650 @ $101.28 · Sale (S): 14,350 @ $102.09 | EDGAR |
| 2024-02-06 | 4 | Interactive Brokers Group, Inc. (IBKR) | Sale (S): 74,218 @ $96.29 · Sale (S): 24,547 @ $95.67 · Sale (S): 1,235 @ $96.45 | EDGAR |
| 2024-01-05 | 4 | Interactive Brokers Group, Inc. (IBKR) | Grant/award (A): 14,780 @ $0 · Grant/award (A): 302 @ $82.90 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-04 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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