Company · Ownership research

Interactive Brokers Group, Inc. IBKR

CIK 0001381197

Form 4 transactions dated Nov 1, 2023 to Nov 9, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 31 rows; the complete set is available through the API.

Insider filings on file run through Nov 3, 2026.

Insider purchases & sales

Purchased: $78.09K
Sold: $198.20M

Nov 1, 2023 – Nov 3, 2026
Available records · partial months are marked ·

202410 of 30 preview events · 31 available in 2024

Date	Insider	Activity	Trade value (USD)	% of prior holding
Feb 22, 2024	Nemser Earl H Vice Chairman · Director	Sale	$535.05K 5,000 shares sold	4.39% sold Direct holding	▾
Feb 21, 2024	Nemser Earl H Vice Chairman · Director	Sale	$524.30K 5,000 shares sold	4.21% sold Direct holding	▾
Feb 16, 2024	Nemser Earl H Vice Chairman · Director	Sale	$528.13K 5,000 shares sold	4.04% sold Direct holding	▾
Feb 15, 2024	Nemser Earl H Vice Chairman · Director	Sale	$1.04M 10,000 shares sold	7.48% sold Direct holding	▾
Feb 14, 2024	Nemser Earl H Vice Chairman · Director	Sale	$2.54M 25,000 shares sold	15.75% sold Direct holding	▾
Feb 13, 2024	Nemser Earl H Vice Chairman · Director	Sale	$5.05M 50,000 shares sold	23.95% sold Direct holding	▾
Feb 6, 2024	Frank Thomas AJ Chief Information Officer	Sale	$345.95K 3,667 shares sold	Unavailable Direct holding	▾
Feb 5, 2024	Frank Thomas AJ Chief Information Officer	Sale	$3.47M 36,267 shares sold	31.03% sold Direct holding	▾
Feb 5, 2024	Nemser Earl H Vice Chairman · Director	Sale	$2.47M 25,782 shares sold	10.99% sold Direct holding	▾
Feb 2, 2024	Nemser Earl H Vice Chairman · Director	Sale	$7.15M 74,218 shares sold	24.04% sold Direct holding	▾

Showing 30 / 31 record groups in 2024. 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 30 of 31 purchase / sale groups and 21 of 21 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","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. Share totals are on today's split-adjusted basis. 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.