[Form 4] JANUS HENDERSON GROUP PLC Insider Trading Activity

Rhea-AI Filing Summary

Roger M.J. Thompson, Chief Financial Officer of Janus Henderson Group plc, reported an insider sale on this Form 4. The filing shows a disposition of 27,490.532 shares of the issuer's common stock on 09/11/2025 at a reported price of $45.259 per share, leaving beneficial ownership of 113,097.1236 shares held directly. The form notes the remaining total includes shares purchased under the issuer's Buy As You Earn plan. The filing was signed by an authorized representative under power of attorney on 09/15/2025.

Positive

• None.

Negative

• Insider sale of 27,490.532 shares by the CFO disclosed (09/11/2025) which reduces direct holdings.
• No 10b5-1 or plan box was checked to indicate the transaction was executed under an affirmative defense plan on the face of the form.

Insights

Financial Analyst

TL;DR: Insider sale of 27,490.532 shares by the CFO is a routine disclosure but warrants monitoring for pattern changes.

The Form 4 documents a direct sale of 27,490.532 shares at $45.259 on 09/11/2025, leaving 113,097.1236 shares beneficially owned. The filing explicitly states remaining holdings include purchases under the company's Buy As You Earn plan, indicating some continued participation in the company's equity programs. This is a single transaction disclosure without accompanying commentary on motives or plans; its standalone informational value is limited but relevant for tracking insider activity over time.

Corporate Governance Expert

TL;DR: The filing is compliant and properly executed under power of attorney; it provides required transparency on insider transactions.

The Form 4 is completed with issuer, reporting person, relationship (CFO), transaction date, amount sold, price, and post-transaction holdings. The explanatory note clarifies inclusion of shares from the Buy As You Earn plan. Signature by an authorized agent on 09/15/2025 is present. There are no indications of amendments or plan-based 10b5-1 markings on the face of the form. This meets standard Section 16 disclosure requirements.

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^*

THOMPSON ROGER MJ

(Last) (First) (Middle)

201 BISHOPGATE

(Street)

LONDON X0 EC2M 3AE

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
JANUS HENDERSON GROUP PLC [ JHG ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CHIEF FINANCIAL OFFICER

3. Date of Earliest Transaction (Month/Day/Year)
09/11/2025

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/11/2025		S		27,490.532	D	$45.259	113,097.1236(1)	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Includes shares purchased under the Issuer's Buy As You Earn plan.

	/s/ Lisa Kish, by Power of Attorney for Roger Thompson	09/15/2025
	** 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.

FAQ

What insider transaction did Roger Thompson (JHG) report on this Form 4?

The filing reports a sale of 27,490.532 shares of Janus Henderson Group plc common stock on 09/11/2025 at $45.259 per share.

How many JHG shares does the reporting person own after the transaction?

Following the reported sale, the filing shows beneficial ownership of 113,097.1236 shares held directly.

Did the Form 4 indicate the shares came from an employee plan?

Yes. The explanation states the post-transaction holdings include shares purchased under the issuer's Buy As You Earn plan.

Who signed the Form 4 and when was it signed?

The form was signed by Lisa Kish, by Power of Attorney for Roger Thompson on 09/15/2025.

Was the transaction reported as part of a 10b5-1 trading plan?

No box indicating a transaction pursuant to a 10b5-1 plan is checked in the provided content.