Sell4

Tempus AI, Inc.

TEM

Total Value

$16.1M

Net $16.1M sold

Filing Date

Sep 18, 2026

6 transactions

Sales

$16.1M

6 transactions

Trade Summary

On Sep 17, 2026, LEFKOFSKY ERIC P, Insider, sold $16.1M of Tempus AI, Inc. (TEM) across 6 transactions. The filing covers Class A Common Stock and reflects net selling of $16.1M. Reported prices ranged from $80.52 to $81.09. Insider transactions are sourced from SEC Form 4 disclosures and should be reviewed alongside company fundamentals and the insider's broader trading history.

Price at the Time of the Trade

TEM daily price with the insider's sale marked at $80.57.

Sold near the 6-month high · the stock trades 3% lower today.

Price data is delayed and provided for context only — not investment advice.

Insider Information

Name: LEFKOFSKY ERIC P
Role: Insider
Location: CHICAGO, IL

Filing Details

Filing Date: Sep 18, 2026
Transaction Date: Sep 17, 2026
Accession Number: 0001114357-26-000038
Form Type: 4
Net Trading Amount: -$16.1M

Non-Derivative Transactions

Date	Security	Shares	Price	Type	Value
Sep 17, 2026	Class A Common Stock	52,558	$80.52	Sale	$4.2M
Sep 17, 2026	Class A Common Stock	4,942	$81.09	Sale	$400.7K
Sep 17, 2026	Class A Common Stock	123,391	$80.52	Sale	$9.9M
Sep 17, 2026	Class A Common Stock	11,609	$81.09	Sale	$941.4K
Sep 17, 2026	Class A Common Stock	6,855	$80.52	Sale	$552.0K
Sep 17, 2026	Class A Common Stock	645	$81.09	Sale	$52.3K

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Footnotes

(F1)This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 8, 2026.
(F2)The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.00 to $80.92 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.
(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.
(F4)The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.00 to $81.26 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.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

LEFKOFSKY ERIC P

(Last)

(First)

(Middle)

C/O TEMPUS AI, INC.

600 WEST CHICAGO AVENUE, SUITE 510

(Street)

CHICAGO

60654

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
Tempus AI, Inc. [ TEM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
X	Officer (give title below)		Other (specify below)
	CEO and Chairman

3. Date of Earliest Transaction (Month/Day/Year)
09/17/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Class A Common Stock	09/17/2026		S⁽¹⁾		52,558	D	$80.52⁽²⁾	8,607,725	I	By Gray Media, LLC⁽³⁾
Class A Common Stock	09/17/2026		S⁽¹⁾		4,942	D	$81.09⁽⁴⁾	8,602,783	I	By Gray Media, LLC⁽³⁾
Class A Common Stock	09/17/2026		S⁽¹⁾		123,391	D	$80.52⁽²⁾	14,997,078	I	By Blue Media, LLC⁽³⁾
Class A Common Stock	09/17/2026		S⁽¹⁾		11,609	D	$81.09⁽⁴⁾	14,985,469	I	By Blue Media, LLC⁽³⁾
Class A Common Stock	09/17/2026		S⁽¹⁾		6,855	D	$80.52⁽²⁾	810,276	I	By Lefkofsky Family Foundation⁽³⁾
Class A Common Stock	09/17/2026		S⁽¹⁾		645	D	$81.09⁽⁴⁾	809,631	I	By Lefkofsky Family Foundation⁽³⁾
Class A Common Stock								2,098,130	D
Class A Common Stock								406	I	By 346 Long LLC⁽³⁾
Class A Common Stock								5,715,203	I	By Lefkofsky Family 2025 GRAT⁽³⁾
Class A Common Stock								206	I	By Black Media, LLC⁽³⁾
Class A Common Stock								150,000	I	By Vas.org Foundation⁽³⁾
Class A Common Stock								4,284,797	I	By Lefkofsky Family 2026 GRAT⁽³⁾

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 8, 2026.

2. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.00 to $80.92 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.

3. 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.

4. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.00 to $81.26 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.

	/s/ Andrew Polovin, Attorney-in-Fact	09/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Form 4 as rendered by the SEC from accession 0001114357-26-000038.

Tempus AI, Inc.

Trade Summary

Price at the Time of the Trade

Company Information

Insider Information

Filing Details

Non-Derivative Transactions

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Footnotes

SEC Form 4

SEC Filing

Price at the Time of the Trade

SEC Form 4