LEFKOFSKY ERIC P

10% owner at SEIBELS BRUCE GROUP INC · on record since Aug 8, 2024
10% owner at Personalis, Inc. · on record since Jul 3, 2024
Director at INNERWORKINGS INC · on record since Sep 12, 2008
Director at Echo Global Logistics, Inc. · on record since Oct 1, 2009
10% owner at Echo Global Logistics, Inc. · on record since Oct 1, 2009
Director at Groupon, Inc. · on record since Nov 3, 2011
10% owner at Groupon, Inc. · on record since Nov 3, 2011
Chief Executive Officer at Groupon, Inc. · on record since Dec 16, 2013
Director at Tempus AI, Inc. · on record since Apr 30, 2026
CEO and Chairman at Tempus AI, Inc. · on record since Apr 30, 2026
10% owner at Tempus AI, Inc. · on record since Apr 30, 2026

Insider trading activity of LEFKOFSKY ERIC P

Transactions on record: 493; since Oct 8, 2008

Open-market buys: 19; $14M

Open-market sells: 342; $805.6M

Companies traded: 4; last filing Sep 24, 2026

Figures computed from official regulatory filings — .

Companies where LEFKOFSKY ERIC P has traded

Tempus AI, Inc.312 tx · $651M · Sep 24, 2026
Groupon, Inc.122 tx · $142.9M · May 15, 2024
Echo Global Logistics, Inc.38 tx · $26M · Jan 6, 2014
INNERWORKINGS INC21 tx · $2.8M · Aug 17, 2012

Track record of LEFKOFSKY ERIC P

Statistical track record

Free account

Open-market buys: 19

Last buy: Jun 18, 2020

Win rates, median returns and the proven-insider analysis come with a free account.

Transaction history of LEFKOFSKY ERIC P

Co-insiders of LEFKOFSKY ERIC P

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-184	78.86 USD	$14.5K		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-4,420	77.29 USD	$341.6K		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-24	78.86 USD	$1.9K		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-160	78.86 USD	$12.6K		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-37,950	78.23 USD	$3M		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-29,367	77.29 USD	$2.3M		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-2,091	78.23 USD	$163.6K		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-432	78.86 USD	$34.1K		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-7,394	76.57 USD	$566.2K		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-965	76.57 USD	$73.9K		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-17,359	76.57 USD	$1.3M		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-14,042	78.23 USD	$1.1M		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-6,431	76.57 USD	$492.4K		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-33,770	77.29 USD	$2.6M		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-79,259	77.29 USD	$6.1M	Unusual size	SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-16,152	78.23 USD	$1.3M		SEC
Tempus AI, Inc.Listing unverified	Sep 18, 2026	Sell	-11,609	81.09 USD	$941.4K		SEC
Tempus AI, Inc.Listing unverified	Sep 18, 2026	Sell	-4,942	81.09 USD	$400.7K		SEC
Tempus AI, Inc.Listing unverified	Sep 18, 2026	Sell	-52,558	80.52 USD	$4.2M	Unusual size	SEC
Tempus AI, Inc.Listing unverified	Sep 18, 2026	Sell	-123,391	80.52 USD	$9.9M	Unusual size	SEC
Tempus AI, Inc.Listing unverified	Sep 18, 2026	Sell	-6,855	80.52 USD	$552K		SEC
Tempus AI, Inc.Listing unverified	Sep 18, 2026	Sell	-645	81.09 USD	$52.3K		SEC
Tempus AI, Inc.Listing unverified	Aug 27, 2026	Sell	-760	64.03 USD	$48.7K		SEC
Tempus AI, Inc.Listing unverified	Aug 27, 2026	Sell	-578	67.01 USD	$38.7K		SEC
Tempus AI, Inc.Listing unverified	Aug 27, 2026	Sell	-10,282	68.13 USD	$700.5K		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-184	78.86 USD	$14.5K		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-4,420	77.29 USD	$341.6K		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-24	78.86 USD	$1.9K		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-160	78.86 USD	$12.6K		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-37,950	78.23 USD	$3M		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-29,367	77.29 USD	$2.3M		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-2,091	78.23 USD	$163.6K		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-432	78.86 USD	$34.1K		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-7,394	76.57 USD	$566.2K		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-965	76.57 USD	$73.9K		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-17,359	76.57 USD	$1.3M		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-14,042	78.23 USD	$1.1M		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-6,431	76.57 USD	$492.4K		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-33,770	77.29 USD	$2.6M		SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-79,259	77.29 USD	$6.1M	Unusual size	SEC
Tempus AI, Inc.Listing unverified	Sep 24, 2026	Sell	-16,152	78.23 USD	$1.3M		SEC
Tempus AI, Inc.Listing unverified	Sep 18, 2026	Sell	-11,609	81.09 USD	$941.4K		SEC
Tempus AI, Inc.Listing unverified	Sep 18, 2026	Sell	-4,942	81.09 USD	$400.7K		SEC
Tempus AI, Inc.Listing unverified	Sep 18, 2026	Sell	-52,558	80.52 USD	$4.2M	Unusual size	SEC
Tempus AI, Inc.Listing unverified	Sep 18, 2026	Sell	-123,391	80.52 USD	$9.9M	Unusual size	SEC
Tempus AI, Inc.Listing unverified	Sep 18, 2026	Sell	-6,855	80.52 USD	$552K		SEC
Tempus AI, Inc.Listing unverified	Sep 18, 2026	Sell	-645	81.09 USD	$52.3K		SEC
Tempus AI, Inc.Listing unverified	Aug 27, 2026	Sell	-760	64.03 USD	$48.7K		SEC
Tempus AI, Inc.Listing unverified	Aug 27, 2026	Sell	-578	67.01 USD	$38.7K		SEC
Tempus AI, Inc.Listing unverified	Aug 27, 2026	Sell	-10,282	68.13 USD	$700.5K		SEC