Earl H Nemser
CIK 1391400 · Vice Chairman · last filed 2026-08-04
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$111.44M
Companies
1
Total Filings
216
Lifetime Open-Market Net
-$150.85M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| IBKR | Vice Chairman | 1,232,912 | $90.39 | $111.44M | -$150.85M | 213 | 2026-08-04 |
Recent Filings · Page 9 of 22
216 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2017-09-11 | IBKR | Sell (S) | −1,623 | -$67.2K | EDGAR |
| 2017-09-07 | IBKR | Sell (S) | −1,675 | -$70.1K | EDGAR |
| 2017-09-05 | IBKR | Sell (S) | −1,666 | -$69.7K | EDGAR |
| 2017-08-31 | IBKR | Sell (S) | −1,623 | -$67.6K | EDGAR |
| 2017-08-29 | IBKR | Sell (S) | −1,649 | -$69.7K | EDGAR |
| 2017-08-25 | IBKR | Sell (S) | −1,624 | -$67.7K | EDGAR |
| 2017-08-23 | IBKR | Sell (S) | −1,649 | -$67.5K | EDGAR |
| 2017-08-21 | IBKR | Sell (S) | −1,649 | -$67.2K | EDGAR |
| 2017-08-17 | IBKR | Sell (S) | −1,683 | -$69.6K | EDGAR |
| 2017-08-15 | IBKR | Sell (S) | −841 | -$34.7K | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.