Comparable stake leader
Eric Paul Lefkofsky
SEC ownership of Tempus AI, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001717115.
Disclosed value leader
Eric Paul Lefkofsky
Comparable rows
50/50
Latest evidence
28 Aug 2026
- Public ticker
- TEM on Nasdaq
- Parsed ownership sources
-
13D/G, 3/4/5, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Eric Paul Lefkofsky
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Eric Paul Lefkofsky
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
28 Aug 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001717115
- Issuer location
- Chicago, IL
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Tempus AI, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Eric Paul Lefkofsky
Disclosed value leader
Eric Paul Lefkofsky
Comparable rows
50/50
Latest evidence
28 Aug 2026
13D/G
3/4/5
13F
Lead comparable stake: 24%
13D/G row: Eric Paul Lefkofsky
Showing 1-8 of 50 holder rows.
Quick read
Eric Paul Lefkofsky leads the comparable SEC ownership view at 24%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Eric Paul Lefkofsky's linked filing trail.
Comparable ownership
Top 5
Eric Paul Lefkofsky
24%
Bradley A. Keywell
7.6%
ARK Investment Management LLC
5.4%
BAILLIE GIFFORD & CO
5%
Red Sky Ventures LLC
4.7%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Eric Paul Lefkofsky |
13D/G
3/4/5
CEO and Chairman, Director, 10%+ Owner
|
24%
|
$2,923,620,275
42,767,997 shares
|
-$143,612,055 | 31 Dec 2025 |
| Bradley A. Keywell |
3/4/5
13D/G
10%+ Owner
|
7.6%
from 13D/G
|
$544,732,244
15,218,365 shares
|
— | 15 Jan 2025 |
| ARK Investment Management LLC |
13F
13D/G
Company
|
5.4%
from 13D/G
|
$691,447,141
18,293,973 shares
mixed-class rows
|
— | 30 Jun 2026 |
| BAILLIE GIFFORD & CO |
13F
13D/G
Company
|
5%
from 13D/G
|
$474,454,405
8,190,133 shares
|
— | 30 Jun 2026 |
| Red Sky Ventures LLC |
3/4/5
13D/G
10%+ Owner
|
4.7%
from 13D/G
|
$595,367,647
14,610,249 shares
|
— | 11 Dec 2024 |
| Ryan Fukushima |
3/4/5
CEO, Data
|
0.35%
|
$35,902,881
609,883 shares
|
-$11,081,854 | 21 Aug 2026 |
| Andrew Polovin |
3/4/5
EVP, Chief Legal Officer
|
0.08%
|
$7,735,840
138,140 shares
|
-$4,808,735 | 18 Aug 2026 |
| James William Rogers |
3/4/5
Chief Financial Officer
|
0.06%
|
$6,361,440
106,024 shares
|
-$6,919,957 | 18 Aug 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$207,286,154.
Buys
$188,580
Insiders: 1
Sells
$207,474,734
Insiders: 11
Net
-$207,286,154
Shares: -3,308,183
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 2,694
Shares: 3,310,877
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 2,694 | 1,064,302 | $188,580 | $58,054,672 | -$57,866,092 |
| 3-6 | 0 | 560,137 | $0 | $26,681,743 | -$26,681,743 |
| 6-9 | 0 | 606,698 | $0 | $38,007,264 | -$38,007,264 |
| 9-12 | 0 | 1,079,740 | $0 | $84,731,054 | -$84,731,054 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-17 of 17 reporting-owner rows connected to Tempus AI, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
17
Largest Forms 3/4/5 holder
Eric Paul Lefkofsky
Net 12M change
-$207,286,154
Latest report
28 Aug 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Eric Paul Lefkofsky | CEO and Chairman, Director, 10%+ Owner | $2,899,785,702 | -$180,824,791 | -5.9% | Mixed | 25 Aug 2026 |
| Red Sky Ventures LLC | 10%+ Owner | $595,367,647 | Filing P/S | 11 Dec 2024 | ||
| Bradley A. Keywell | 10%+ Owner | $544,732,244 | Filing P/S | 15 Jan 2025 | ||
| Ryan Fukushima | CEO, Data | $35,902,881 | -$11,081,854 | -24% | Mixed | 21 Aug 2026 |
| Andrew Polovin | EVP, Chief Legal Officer | $7,735,840 | -$4,808,735 | -38% | Filing P/S | 18 Aug 2026 |
| James William Rogers | Chief Financial Officer | $6,361,440 | -$6,919,957 | -52% | Filing P/S | 18 Aug 2026 |
| Thomas Edward Schoenherr | CEO, Diagnostics | $6,091,470 | -$811,041 | -12% | Filing P/S | 21 Aug 2026 |
| Peter J. Barris | Director | $5,490,793 | Mixed | 21 May 2026 | ||
| Erik Phelps | EVP, Chief Admin. Officer | $4,713,134 | -$881,800 | -16% | Filing P/S | 19 Feb 2026 |
| Theodore Leonsis | Director | $3,987,499 | Mixed | 21 May 2026 | ||
| Ryan M. Bartolucci | Chief Accounting Officer | $3,366,832 | -$779,294 | -19% | Filing P/S | 18 Aug 2026 |
| Nadja West | Director | $2,206,689 | -$368,700 | -14% | Filing P/S | 28 Aug 2026 |
| Scott Gottlieb | Director | $1,842,669 | Mixed | 21 May 2026 | ||
| Eric D. Belcher | Director | $1,603,365 | Mixed | 21 May 2026 | ||
| Jennifer A. Doudna | Director | $1,426,810 | -$410,912 | -22% | Filing P/S | 25 Jun 2026 |
| Wayne A.i. Frederick | Director | $1,390,469 | -$283,820 | -17% | Mixed | 21 May 2026 |
| David R. Epstein | Director | $1,349,479 | -$115,250 | -7.9% | Filing P/S | 03 Aug 2026 |
Recent insider transactions for Tempus AI, Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Nadja West | TEM | Class A Common Stock | Sale | -8.58% | $207,000 | $69.00 | -3,000 | 31,981 | 28 Aug 2026 | Direct |
| Eric P. Lefkofsky | TEM | Class A Common Stock | Sale | -7.32% | $827,857 | $69.87 | -11,848 | 150,000 | 25 Aug 2026 | By Vas.org Foundation |
| Eric P. Lefkofsky | TEM | Class A Common Stock | Sale | -19.1% | $2,595,140 | $68.02 | -38,152 | 161,848 | 25 Aug 2026 | By Vas.org Foundation |
| Eric P. Lefkofsky | TEM | Class A Common Stock | Sale | -0.91% | $513,314 | $68.44 | -7,500 | 817,131 | 25 Aug 2026 | By Lefkofsky Family Foundation |
| Eric P. Lefkofsky | TEM | Class A Common Stock | Sale | -0.88% | $9,241,781 | $68.46 | -135,000 | 15,120,469 | 25 Aug 2026 | By Blue Media, LLC |
| Eric P. Lefkofsky | TEM | Class A Common Stock | Sale | -0.66% | $3,936,377 | $68.46 | -57,500 | 8,660,283 | 25 Aug 2026 | By Gray Media, LLC |
| Thomas Edward Schoenherr | TEM | Class A Common Stock | Sale | 3.19% | $188,580 | $70.00 | 2,694 | 87,021 | 21 Aug 2026 | Direct |
| Ryan Fukushima | TEM | Class A Common Stock | Sale | -23.2% | $1,000,020 | $70.00 | -14,286 | 47,420 | 21 Aug 2026 | By Spouse |
| Thomas Edward Schoenherr | TEM | Class A Common Stock | Sale | -8.26% | $471,991 | $58.40 | -8,082 | 89,715 | 19 Aug 2026 | Direct |
| James William Rogers | TEM | Class A Common Stock | Sale | -19.9% | $1,578,780 | $60.00 | -26,313 | 106,024 | 19 Aug 2026 | Direct |
| Andrew Polovin | TEM | Class A Common Stock | Sale | -5.43% | $443,912 | $56.00 | -7,927 | 138,140 | 19 Aug 2026 | Direct |
| Ryan Fukushima | TEM | Class A Common Stock | Sale | -6.81% | $2,038,723 | $49.61 | -41,095 | 562,463 | 18 Aug 2026 | Direct |
| Eric P. Lefkofsky | TEM | Class A Common Stock | Sale | -5.94% | $6,577,840 | $49.61 | -132,591 | 2,098,130 | 18 Aug 2026 | Direct |
| Thomas Edward Schoenherr | TEM | Class A Common Stock | Sale | -8.63% | $458,000 | $49.61 | -9,232 | 97,797 | 18 Aug 2026 | Direct |
| James William Rogers | TEM | Class A Common Stock | Sale | -14.6% | $1,117,664 | $49.61 | -22,529 | 132,337 | 18 Aug 2026 | Direct |
| Andrew Polovin | TEM | Class A Common Stock | Sale | -13.2% | $1,098,762 | $49.61 | -22,148 | 146,067 | 18 Aug 2026 | Direct |
| Ryan M. Bartolucci | TEM | Class A Common Stock | Sale | -8.34% | $306,342 | $49.61 | -6,175 | 67,866 | 18 Aug 2026 | Direct |
| Nadja West | TEM | Class A Common Stock | Sale | -7.9% | $161,700 | $53.90 | -3,000 | 34,981 | 14 Aug 2026 | Direct |
| Ryan Fukushima | TEM | Class A Common Stock | Gift | -50.2% | -62,239 | 61,706 | 12 Aug 2026 | By Spouse | ||
| Ryan Fukushima | TEM | Class A Common Stock | Sale | -13.9% | $1,000,800 | $50.04 | -20,000 | 123,945 | 07 Aug 2026 | By Spouse |
| David R. Epstein | TEM | Class A Common Stock | Sale | -1.18% | $16,058 | $43.40 | -370 | 31,094 | 03 Aug 2026 | Direct |
| Ryan Fukushima | TEM | Class A Common Stock | Sale | -14.2% | $1,100,076 | $46.19 | -23,818 | 143,945 | 03 Aug 2026 | By Spouse |
| Andrew Polovin | TEM | Class A Common Stock | Award | 31.2% | 40,000 | 168,215 | 29 Jul 2026 | Direct | ||
| James William Rogers | TEM | Class A Common Stock | Award | 34.8% | 40,000 | 154,866 | 29 Jul 2026 | Direct | ||
| Eric P. Lefkofsky | TEM | Class A Common Stock | Sale | -20% | $2,102,984 | $42.06 | -50,000 | 200,000 | 28 Jul 2026 | By Vas.org Foundation |
| Eric P. Lefkofsky | TEM | Class A Common Stock | Sale | -0.9% | $315,446 | $42.06 | -7,500 | 824,631 | 28 Jul 2026 | By Lefkofsky Family Foundation |
| Eric P. Lefkofsky | TEM | Class A Common Stock | Sale | -0.88% | $5,678,053 | $42.06 | -135,000 | 15,255,469 | 28 Jul 2026 | By Blue Media, LLC |
| Eric P. Lefkofsky | TEM | Class A Common Stock | Sale | -0.66% | $2,418,431 | $42.06 | -57,500 | 8,717,783 | 28 Jul 2026 | By Gray Media, LLC |
| Ryan Fukushima | TEM | Class A Common Stock | Sale | -16.6% | $1,910,123 | $57.39 | -33,284 | 167,763 | 08 Jul 2026 | By Spouse |
| Ryan Fukushima | TEM | Class A Common Stock | Sale | -4.74% | $600,000 | $60.00 | -10,000 | 201,047 | 06 Jul 2026 | By Spouse |
| Eric P. Lefkofsky | TEM | Class A Common Stock | Sale | -0.86% | $7,645,111 | $57.48 | -133,000 | 15,390,469 | 29 Jun 2026 | By Blue Media, LLC |
| Eric P. Lefkofsky | TEM | Class A Common Stock | Sale | -0.38% | $1,911,278 | $57.48 | -33,250 | 8,775,283 | 29 Jun 2026 | By Gray Media, LLC |
| Jennifer A. Doudna | TEM | Class A Common Stock | Sale | -9.34% | $147,015 | $55.00 | -2,673 | 25,942 | 25 Jun 2026 | Direct |
| James William Rogers | TEM | Class A Common Stock | Sale | -9.12% | $634,095 | $55.00 | -11,529 | 114,866 | 25 Jun 2026 | Direct |
| David R. Epstein | TEM | Class A Common Stock | Sale | -0.79% | $12,350 | $49.40 | -250 | 31,464 | 01 Jun 2026 | Direct |
| Eric P. Lefkofsky | TEM | Class A Common Stock | Sale | -0.85% | $6,210,651 | $46.70 | -133,000 | 15,523,469 | 27 May 2026 | By Blue Media, LLC |
| Eric P. Lefkofsky | TEM | Class A Common Stock | Sale | -0.38% | $1,552,661 | $46.70 | -33,250 | 8,808,533 | 27 May 2026 | By Gray Media, LLC |
| Eric D. Belcher | TEM | Class A Comnmon Stock | Award | 38.1% | 5,913 | 21,424 | 21 May 2026 | Direct | ||
| Nadja West | TEM | Class A Common Stock | Award | 18.4% | 5,913 | 37,981 | 21 May 2026 | Direct | ||
| Theodore Leonsis | TEM | Class A Comnmon Stock | Award | 38.1% | 5,913 | 21,424 | 21 May 2026 | Direct | ||
| Scott Gottlieb | TEM | Class A Comnmon Stock | Award | 17% | 5,913 | 40,749 | 21 May 2026 | Direct | ||
| Wayne A.i. Frederick | TEM | Class A Common Stock | Award | 23.8% | 5,913 | 30,749 | 21 May 2026 | Direct | ||
| David R. Epstein | TEM | Class A Comnmon Stock | Award | 22.9% | 5,913 | 31,714 | 21 May 2026 | Direct | ||
| Jennifer A. Doudna | TEM | Class A Comnmon Stock | Award | 26% | 5,913 | 28,615 | 21 May 2026 | Direct | ||
| Peter J. Barris | TEM | Class A Common Stock | Award | 5.12% | 5,913 | 121,424 | 21 May 2026 | Direct | ||
| Thomas Edward Schoenherr | TEM | Class A Common Stock | Sale | -1.45% | $69,631 | $44.07 | -1,580 | 107,029 | 19 May 2026 | Direct |
| James William Rogers | TEM | Class A Common Stock | Sale | -7.91% | $478,292 | $44.07 | -10,853 | 126,395 | 19 May 2026 | Direct |
| Andrew Polovin | TEM | Class A Common Stock | Sale | -6.36% | $383,541 | $44.07 | -8,703 | 128,215 | 19 May 2026 | Direct |
| Eric P. Lefkofsky | TEM | Class A Common Stock | Sale | -0.99% | $984,303 | $44.07 | -22,335 | 2,230,721 | 19 May 2026 | Direct |
| Ryan Fukushima | TEM | Class A Common Stock | Sale | -2.2% | $597,148 | $44.07 | -13,550 | 603,558 | 19 May 2026 | Direct |
* marks a reported price that did not pass the local price check.