Company · Ownership research

Interactive Brokers Group, Inc. IBKR

CIK 0001381197

Form 4 transactions dated Sep 1, 2023 to Sep 23, 2026, as reported to the SEC.

Insider trading Initial holdingsInstitutional holders

Insider filings on file run through 2026-09-02.

Insider purchases & sales

Purchased: $74.00K
Sold: $275.25M

Sep 1, 2023 – Sep 2, 2026
Available records · partial months are marked ·

202610 of 13 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
2026-09-01	Conkling Lori A Director	Purchase	$2.36K 25 shares bought	0.99% added Direct holding	▾
2026-08-03	Conkling Lori A Director	Purchase	$2.18K 25 shares bought	1.00% added Direct holding	▾
2026-07-01	Conkling Lori A Director	Purchase	$2.20K 25 shares bought	1.01% added Direct holding	▾
2026-06-01	Conkling Lori A Director	Purchase	$2.15K 25 shares bought	1.02% added Direct holding	▾
2026-05-01	Conkling Lori A Director	Purchase	$1.99K 25 shares bought	1.03% added Direct holding	▾
2026-04-28	Harris Lawrence E Director	Sale	$2.00M 26,000 shares sold	13.03% sold Direct holding	▾
2026-04-01	Conkling Lori A Director	Purchase	$1.71K 25 shares bought	1.04% added Direct holding	▾
2026-03-02	Conkling Lori A Director	Purchase	$1.73K 25 shares bought	1.05% added Direct holding	▾
2026-02-25	Conkling Lori A Director	Purchase	$3.66K 50 shares bought	2.14% added Direct holding	▾
2026-01-27	Nemser Earl H Vice Chairman · Director	Sale	$4.53M 60,200 shares sold	100.00% sold LLC holding	▾

Showing 13 / 13 record groups in 2026. The complete set is available through the API.

Interactive Brokers Group, Inc. · IBKR

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 13 of 13 purchase / sale groups and 15 of 15 other groups; the totals and the monthly series cover the whole window.

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{"ticker":"IBKR","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.