Company · Ownership research

GROUP 1 AUTOMOTIVE INC GPI

CIK 0001031203

Form 4 transactions dated Nov 1, 2023 to Nov 8, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 38 rows; the complete set is available through the API.

Insider filings on file run through Oct 30, 2026.

Insider purchases & sales

Purchased: $211.50M
Sold: $20.48M

Nov 1, 2023 – Oct 30, 2026
Available records · partial months are marked ·

202610 of 18 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Oct 30, 2026	MIZELL STEVEN Director	Sale	$143.29K 550 shares sold	94.34% sold Direct holding	▾
Oct 29, 2026	Hobson Gillian A. SVP, Chief Legal Officer & Sec	Sale	$516.48K 2,000 shares sold	20.96% sold Direct holding	▾
Oct 26, 2026	Conifer Management, L.L.C. 10% owner	Purchase	$5.04M 20,471 shares bought	1.03% added Indirect holding	▾
Oct 23, 2026	Conifer Management, L.L.C. 10% owner	Purchase	$8.37M 34,529 shares bought	1.76% added Indirect holding	▾
Oct 22, 2026	Conifer Management, L.L.C. 10% owner	Purchase	$10.82M 45,000 shares bought	2.35% added Indirect holding	▾
Sep 30, 2026	Conifer Management, L.L.C. 10% owner	Purchase	$17.33M 71,592 shares bought	3.89% added Indirect holding	▾
Sep 29, 2026	Conifer Management, L.L.C. 10% owner	Purchase	$16.44M 68,648 shares bought	3.87% added Indirect holding	▾
Sep 28, 2026	Conifer Management, L.L.C. 10% owner	Purchase	$32.51M 133,472 shares bought	8.15% added Indirect holding	▾
Sep 25, 2026	Conifer Management, L.L.C. 10% owner	Purchase	$12.74M 50,532 shares bought	3.18% added Indirect holding	▾
Sep 24, 2026	Conifer Management, L.L.C. 10% owner	Purchase	$18.79M 75,756 shares bought	5.01% added Indirect holding	▾

Showing 18 / 18 record groups in 2026. The complete set is available through the API.

GROUP 1 AUTOMOTIVE INC · GPI

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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 18 of 18 purchase / sale groups and 30 of 38 other groups; the totals and the monthly series cover the whole window.

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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.