Tempus AI: Baillie Gifford Holds 4.98% Stake

Tempus AI, Inc. Schedule 13G/A amendment shows Baillie Gifford & Co. beneficially owned 8,649,356 shares of Tempus AI common stock, equal to 4.98% of the class as of 03/31/2026.

Rhea-AI Filing Summary

Tempus AI, Inc. Schedule 13G/A amendment shows Baillie Gifford & Co. beneficially owned 8,649,356 shares of Tempus AI common stock, equal to 4.98% of the class as of 03/31/2026. The filing lists 8,615,766 shares as sole voting power and 8,649,356 as sole dispositive power. The filing is signed by Grant Meikle on 05/07/2026.

Key Figures

Beneficial ownership: 8,649,356 shares Percent of class: 4.98% Sole voting power: 8,615,766 shares +3 more

6 metrics

Beneficial ownership 8,649,356 shares reported as of 03/31/2026

Percent of class 4.98% percent of common stock class

Sole voting power 8,615,766 shares shares with sole power to vote

Sole dispositive power 8,649,356 shares shares with sole power to dispose

CUSIP 88023B103 Tempus AI common stock CUSIP

Signature date 05/07/2026 Signed by Grant Meikle

Key Terms

Schedule 13G/A, beneficially owned, sole dispositive power, Investment Adviser

4 terms

Schedule 13G/A regulatory

"Amendment No. 4 ) Tempus AI, Inc. Common Stock"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

beneficially owned financial

"Amount beneficially owned: 8,649,356"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

sole dispositive power regulatory

"Sole power to dispose or to direct the disposition of: 8,649,356"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

Investment Adviser financial

"Baillie Gifford & Co ... Investment Adviser"

An investment adviser is a person or firm that professionally manages money and gives recommendations about buying, selling, or holding investments. Like a financial coach or guide, they have a legal duty to act in a client's best financial interest, so their advice, fees and potential conflicts can directly affect returns and risk — making their role important for investors who want informed, accountable help with portfolios.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What stake does Baillie Gifford report in Tempus AI (TEM)?

Baillie Gifford reports beneficial ownership of 8,649,356 shares, representing 4.98% of Tempus AI common stock as of 03/31/2026. The filing is an amended Schedule 13G/A reflecting ownership and voting/dispositive powers.

Does Baillie Gifford have voting control over those Tempus AI shares?

Yes. The filing shows 8,615,766 shares as the filer’s sole power to vote or direct the vote and 0 shared voting power, indicating primary voting authority for the reported position.

What does "sole dispositive power" mean in this filing?

It means the filer alone can decide how to sell or transfer the shares. The amendment lists 8,649,356 shares under sole dispositive power for Baillie Gifford as reported in the filing.

When was this Schedule 13G/A signed and by whom?

The amendment is signed by Grant Meikle, Regulatory Reporting Manager, with a signature date of 05/07/2026. The filing also references 03/31/2026 as the reporting date for ownership figures.

Is Baillie Gifford required to file a Schedule 13D instead of 13G/A?

The filer certifies it is an Investment Adviser and states the foreign regulatory scheme is substantially comparable; therefore it files this amended Schedule 13G/A rather than a Schedule 13D under its disclosure category.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/07/2026 - 10:05 AM EDT Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 4)

Tempus AI, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

88023B103

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 88023B103

1

Names of Reporting Persons

BAILLIE GIFFORD & CO

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 8,615,766.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 8,649,356.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

8,649,356.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.0 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Tempus AI, Inc.
(b)	Address of issuer's principal executive offices: 600 WEST CHICAGO AVENUE, 600 WEST CHICAGO AVENUE, CHICAGO, ILLINOIS, 60654
Item 2.
(a)	Name of person filing: Baillie Gifford & Co
(b)	Address or principal business office or, if none, residence: Calton Square, 1 Greenside Row, Edinburgh, EH1 4AN UK
(c)	Citizenship: Scotland
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 88023B103
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
	Investment Adviser
Item 4.	Ownership
(a)	Amount beneficially owned: 8,649,356
(b)	Percent of class: 4.98 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 8,615,766
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 8,649,356
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ? 240.14a-11. By signing below I certify that, to the best of my knowledge and belief, the foreign regulatory scheme applicable to Investment Adviser is substantially comparable to the regulatory scheme applicable to the functionally equivalent U.S. institution(s). I also undertake to furnish to the Commission staff, upon request, information that would otherwise be disclosed in a Schedule 13D.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

BAILLIE GIFFORD & CO

Signature:	Grant Meikle
Name/Title:	Regulatory Reporting Manager
Date:	05/07/2026