Key facts
- This page summarizes Eric Paul Lefkofsky's Form 4 filing for Tempus AI, Inc. (TEM).
- 16 reported transactions and 0 derivative rows are listed below.
- Accepted by SEC: 24 Sep 2026, 16:15.
Eric Paul Lefkofsky - 22 Sep 2026 Form 4 Insider Report for Tempus AI, Inc. (TEM)
- Reporting relationship
- CEO and Chairman, Director, 10%+ Owner
- Issuer ticker
- TEM
- Reported as of
- 22 Sep 2026
- Net transaction value
- -$19,366,630
- SEC form
- 4
- Accepted by SEC
- 24 Sep 2026, 16:15:10 UTC
- Prior SEC filing
- 18 Sep 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Andrew Polovin, Attorney-in-Fact
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Eric Paul Lefkofsky filed Form 4 for Tempus AI, Inc. (TEM) on 24 Sep 2026.
Change
- Previous filing in this sequence was filed on 18 Sep 2026.
- Current net transaction value: -$19,366,630.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001114357
Primary reporting owner
LEFKOFSKY ERIC P
- Relationship
- CEO and Chairman, Director, 10%+ Owner
- Address
- C/O TEMPUS AI, INC., 600 WEST CHICAGO AVENUE, SUITE 510, CHICAGO
- Signature
- /s/ Andrew Polovin, Attorney-in-Fact
- Signature date
- 24 Sep 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
TEM
transaction
Class A Common Stock
Sale
- Transaction value
- $566,159
- Shares
- -7,394
- Change %
- -0.09%
- Price
- $76.57
- Shares after
- 8,595,389
- Date
- 22 Sep 2026
- Ownership
- By Gray Media, LLC
- Footnotes
- F1, F2, F3
TEM
transaction
Class A Common Stock
Sale
- Transaction value
- $2,610,083
- Shares
- -33,770
- Change %
- -0.39%
- Price
- $77.29
- Shares after
- 8,561,619
- Date
- 22 Sep 2026
- Ownership
- By Gray Media, LLC
- Footnotes
- F1, F3, F4
TEM
transaction
Class A Common Stock
Sale
- Transaction value
- $1,263,571
- Shares
- -16,152
- Change %
- -0.19%
- Price
- $78.23
- Shares after
- 8,545,467
- Date
- 22 Sep 2026
- Ownership
- By Gray Media, LLC
- Footnotes
- F1, F3, F5
TEM
transaction
Class A Common Stock
Sale
- Transaction value
- $14,510
- Shares
- -184
- Change %
- -0%
- Price
- $78.86
- Shares after
- 8,545,283
- Date
- 22 Sep 2026
- Ownership
- By Gray Media, LLC
- Footnotes
- F1, F3, F6
TEM
transaction
Class A Common Stock
Sale
- Transaction value
- $1,329,179
- Shares
- -17,359
- Change %
- -0.12%
- Price
- $76.57
- Shares after
- 14,968,110
- Date
- 22 Sep 2026
- Ownership
- By Blue Media, LLC
- Footnotes
- F1, F2, F3
TEM
transaction
Class A Common Stock
Sale
- Transaction value
- $6,125,928
- Shares
- -79,259
- Change %
- -0.53%
- Price
- $77.29
- Shares after
- 14,888,851
- Date
- 22 Sep 2026
- Ownership
- By Blue Media, LLC
- Footnotes
- F1, F3, F4
TEM
transaction
Class A Common Stock
Sale
- Transaction value
- $2,968,828
- Shares
- -37,950
- Change %
- -0.25%
- Price
- $78.23
- Shares after
- 14,850,901
- Date
- 22 Sep 2026
- Ownership
- By Blue Media, LLC
- Footnotes
- F1, F3, F5
TEM
transaction
Class A Common Stock
Sale
- Transaction value
- $34,068
- Shares
- -432
- Change %
- -0%
- Price
- $78.86
- Shares after
- 14,850,469
- Date
- 22 Sep 2026
- Ownership
- By Blue Media, LLC
- Footnotes
- F1, F3, F6
TEM
transaction
Class A Common Stock
Sale
- Transaction value
- $73,890
- Shares
- -965
- Change %
- -0.12%
- Price
- $76.57
- Shares after
- 808,666
- Date
- 22 Sep 2026
- Ownership
- By Lefkofsky Family Foundation
- Footnotes
- F1, F2, F3
TEM
transaction
Class A Common Stock
Sale
- Transaction value
- $341,622
- Shares
- -4,420
- Change %
- -0.55%
- Price
- $77.29
- Shares after
- 804,246
- Date
- 22 Sep 2026
- Ownership
- By Lefkofsky Family Foundation
- Footnotes
- F1, F3, F4
TEM
transaction
Class A Common Stock
Sale
- Transaction value
- $163,579
- Shares
- -2,091
- Change %
- -0.26%
- Price
- $78.23
- Shares after
- 802,155
- Date
- 22 Sep 2026
- Ownership
- By Lefkofsky Family Foundation
- Footnotes
- F1, F3, F5
TEM
transaction
Class A Common Stock
Sale
- Transaction value
- $1,893
- Shares
- -24
- Change %
- -0%
- Price
- $78.86
- Shares after
- 802,131
- Date
- 22 Sep 2026
- Ownership
- By Lefkofsky Family Foundation
- Footnotes
- F1, F3, F6
TEM
transaction
Class A Common Stock
Sale
- Transaction value
- $492,422
- Shares
- -6,431
- Change %
- -4.3%
- Price
- $76.57
- Shares after
- 143,569
- Date
- 22 Sep 2026
- Ownership
- By Vas.org Foundation
- Footnotes
- F1, F2, F3
TEM
transaction
Class A Common Stock
Sale
- Transaction value
- $2,269,775
- Shares
- -29,367
- Change %
- -20%
- Price
- $77.29
- Shares after
- 114,202
- Date
- 22 Sep 2026
- Ownership
- By Vas.org Foundation
- Footnotes
- F1, F3, F4
TEM
transaction
Class A Common Stock
Sale
- Transaction value
- $1,098,506
- Shares
- -14,042
- Change %
- -12%
- Price
- $78.23
- Shares after
- 100,160
- Date
- 22 Sep 2026
- Ownership
- By Vas.org Foundation
- Footnotes
- F1, F3, F5
TEM
transaction
Class A Common Stock
Sale
- Transaction value
- $12,618
- Shares
- -160
- Change %
- -0.16%
- Price
- $78.86
- Shares after
- 100,000
- Date
- 22 Sep 2026
- Ownership
- By Vas.org Foundation
- Footnotes
- F1, F3, F6
TEM
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 2,098,130
- Date
- 22 Sep 2026
- Ownership
- Direct
TEM
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 406
- Date
- 22 Sep 2026
- Ownership
- By 346 Long LLC
- Footnotes
- F3
TEM
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 5,715,203
- Date
- 22 Sep 2026
- Ownership
- By Lefkofsky Family 2025 GRAT
- Footnotes
- F3
TEM
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 206
- Date
- 22 Sep 2026
- Ownership
- By Black Media, LLC
- Footnotes
- F3
TEM
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 4,284,797
- Date
- 22 Sep 2026
- Ownership
- By Lefkofsky Family 2026 GRAT
- Footnotes
- F3
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Rule 10b5-1 trading plan
These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.
Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).
Explanation of responses 6 footnotes
Footnote F1
This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 8, 2026.
Footnote F2
The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $75.83 to $76.82 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
Footnote F3
The Reporting Person is (i) a member of, and controls a limited liability company that is a member of, 346 Long LLC, (ii) the sole manager of each of Black Media, LLC, Blue Media, LLC and Gray Media, LLC, (iii) a trustee of each of Lefkofsky Family Foundation and Vas.org Foundation. The Reporting Person's spouse is the trustee of the Lefkofsky Family 2025 GRAT and Lefkofsky Family 2026 GRAT.
Footnote F4
The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $76.83 to $77.82 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
Footnote F5
The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $77.83 to $78.82 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
Footnote F6
The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $78.83 to $78.90 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.