IBKR insider buying and SEC filings, explained
Interactive Brokers Group, Inc. · CIK 1381197
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$34.8M
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Nov 2, 2026 | Purchase (code P) | Lori A Conkling (Director) bought 25 shares at $78.44 ($2K), reported as a purchase (code P). Holdings up 1% to 2,609 shares. | SEC filing Filed Nov 3, 2026, 4:01 PM ET |
| Oct 28, 2026 | Sale | Lawrence E Harris (Director) sold 25,000 shares at about $82.61 ($2.1M). Holdings down 14% to 148,482 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 29, 2026, 4:01 PM ET |
| Oct 1, 2026 | Purchase (code P) | Lori A Conkling (Director) bought 25 shares at $85.42 ($2K), reported as a purchase (code P). Holdings up 1% to 2,584 shares. | SEC filing Filed Oct 5, 2026, 4:01 PM ET |
| Sep 1, 2026 | Purchase (code P) | Lori A Conkling (Director) bought 25 shares at $94.53 ($2K), reported as a purchase (code P). Holdings up 1% to 2,559 shares. | SEC filing Filed Sep 2, 2026 |
| Aug 3, 2026 | Purchase (code P) | Lori A Conkling (Director) bought 25 shares at $87.03 ($2K), reported as a purchase (code P). Holdings up 1% to 2,534 shares. | SEC filing Filed Aug 4, 2026 |
| Jul 1, 2026 | Purchase (code P) | Lori A Conkling (Director) bought 25 shares at $88.03 ($2K), reported as a purchase (code P). Holdings up 1% to 2,509 shares. | SEC filing Filed Jul 1, 2026 |
| Jun 1, 2026 | Purchase (code P) | Lori A Conkling (Director) bought 25 shares at $86.10 ($2K), reported as a purchase (code P). Holdings up 1% to 2,484 shares. | SEC filing Filed Jun 2, 2026 |
| May 1, 2026 | Purchase (code P) | Lori A Conkling (Director) bought 25 shares at $79.64 ($2K), reported as a purchase (code P). Holdings up 1% to 2,459 shares. | SEC filing Filed May 4, 2026 |
| Apr 28, 2026 | Sale | Lawrence E Harris (Director) sold 26,000 shares at about $76.93 ($2.0M). Holdings down 13% to 173,482 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Apr 29, 2026 |
| Apr 1, 2026 | Purchase (code P) | Lori A Conkling (Director) bought 25 shares at $68.38 ($2K), reported as a purchase (code P). Holdings up 1% to 2,434 shares. | SEC filing Filed Apr 2, 2026 |
| Feb 25–Mar 2, 2026 | Purchase (code P) | Lori A Conkling (Director) bought 75 shares between Feb 25 and Mar 2 at about $71.88 ($5K), reported as a purchase (code P). Holdings up 3% to 2,409 shares. | SEC filing Filed Mar 26, 2026 |
| Jan 26–27, 2026 | Sale | Earl H Nemser (Director and Vice Chairman) sold 155,000 shares indirectly (by entity) between Jan 26 and Jan 27 at about $75.84 ($11.8M). Holdings by entity down 100% to 0 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jan 28, 2026 |
| Jan 22–23, 2026 | Sale | Earl H Nemser (Director and Vice Chairman) sold 245,000 shares indirectly (by entity) between Jan 22 and Jan 23 at about $77.43 ($19.0M). Holdings by entity down 61% to 155,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jan 26, 2026 |
27 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
Follow IBKR in the Insider Ledger app
Get the appA plain-English brief of insider purchases, 8-Ks and red flags at the companies you pick. No account needed.