Form 8-K

8-K — JANUS HENDERSON GROUP PLC

Accession: 0001104659-26-069168

Filed: 2026-06-02

Period: 2026-05-29

CIK: 0001274173

SIC: 6282 (INVESTMENT ADVICE)

Item: Submission of Matters to a Vote of Security Holders

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 29, 2026

JANUS HENDERSON GROUP PLC

(Exact name of registrant

as specified in its charter)

Jersey, Channel Islands

001-38103

98-1376360

(State or other jurisdiction of

(Commission File Number)

(IRS Employer

incorporation)

Identification No.)

201 Bishopsgate

EC2M3AE

London, United

Kingdom

(Zip Code)

(Address of principal executive offices)

+44 (0) 20 7818 1818

(Registrant’s telephone number, including

area code)

N/A

(Former name or former address, if changed since last report.)

Check

the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under

any of the following provisions (see General Instruction A.2. below):

¨ Written communications pursuant

to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant

to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications

pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications

pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered

pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name

of each exchange on which registered

Common Stock, $1.50 Per Share Par Value

JHG

New York Stock Exchange

Indicate

by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405

of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ¨

an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for

complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange

Act. o

Item 5.07 Submission of Matters to a Vote of Security Holders.

On May 29, 2026, Janus Henderson Group plc (the

“Company”) held its 2026 Annual General Meeting of Shareholders. Shareholders voted on the following resolutions and cast

their votes as described below. All director nominees were elected (Proposal 1). The proposal to approve an increase in the cap on the

aggregate annual compensation for non-executive directors was approved (Proposal 2). The proposal to approve the compensation of the Named

Executive Officers as disclosed in the Company’s 2026 Proxy Statement, through a non-binding advisory vote, was approved (Proposal

3). The special resolution to renew the Board’s authority to repurchase its ordinary shares (“common stock”) was approved

(Proposal 4). Additionally, shareholders ratified the reappointment of PricewaterhouseCoopers LLP as the Company’s independent registered

public accounting firm for the fiscal year 2026 and authorized the Directors to determine their remuneration (Proposal 5).

Proposal 1: Election of Directors.

Proposal

Nominee

For

% For

Against

Abstain

Broker

Non-Votes

1.1

Brian Baldwin

117,787,538

99.6

473,065

77,669

12,800,205

1.2

John Cassaday

117,511,387

99.4

766,372

60,513

12,800,205

1.3

Kalpana Desai

113,768,173

96.2

4,503,531

66,568

12,800,205

1.4

Ali Dibadj

118,089,196

99.8

183,432

65,644

12,800,205

1.5

Kevin Dolan

117,646,304

99.5

630,763

61,205

12,800,205

1.6

Eugene Flood Jr.

116,956,991

98.9

1,314,363

66,918

12,800,205

1.7

Josh Frank

117,714,024

99.5

552,734

71,514

12,800,205

1.8

Alison Quirk

116,809,780

98.8

1,468,178

60,314

12,800,205

1.9

Leslie F. Seidman

117,686,790

99.5

590,246

61,236

12,800,205

1.10

Angela Seymour-Jackson

116,294,615

98.3

1,981,796

61,861

12,800,205

1.11

Anne Sheehan

117,675,342

99.5

600,332

62,598

12,800,205

Proposal 2: Increase aggregate cap for non-executive director compensation.

For

% For

Against

Abstain

Broker Non-Vote

84,723,565

71.7

33,462,599

152,108

12,800,205

Proposal 3: Advisory Say-on-Pay Vote on Executive Compensation.

For

% For

Against

Abstain

Broker Non-Vote

79,001,049

66.8

39,198,468

138,755

12,800,205

Proposal 4: Renewal of Authority to Repurchase Common Stock.

For

% For

Against

Abstain

Broker Non-Vote

130,748,879

99.8

254,159

135,439

Proposal 5: Reappointment and Remuneration of Auditors.

For

% For

Against

Abstain

Broker Non-Vote

130,811,781

99.8

250,756

75,940

Note: In tabulating the voting results, only FOR

or AGAINST votes are counted. Broker non-votes and abstentions are counted only for purposes of determining whether a quorum is present.

Issued Share Capital as at the record date (April 13, 2026): 154,075,608 shares.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934,

the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Janus Henderson Group plc

Date: June 1, 2026

By:

/s/ Sukh Grewal

Sukh Grewal

Chief Financial Officer

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Entity Address, City or Town

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