8-K

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): July 1, 2026

UNUM GROUP

(Exact name of registrant as specified in its charter)

Delaware	001-11294	62-1598430
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

1 Fountain Square

Chattanooga, Tennessee 37402

(Address of principal executive offices) (Zip Code)

(423) 294-1011

(Registrant's telephone number, including area code)

Not Applicable

(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, $0.10 par value	UNM	New York Stock Exchange
6.250% Junior Subordinated Notes due 2058	UNMA	New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in 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
☐	If 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.

Item 8.01    Other Events.

On July 1, 2026, Unum Group (the "Company") issued a news release announcing that Andrew D. Walker has been promoted to Executive Vice President, Chief Customer Operations Officer. Since joining the Company in June 2025, Mr. Walker has served as Chief Customer Operations Officer. In his current role, he leads an expanded portfolio of operational and transformation functions that support the delivery of the Company's products and services and customer experience.

A copy of the news release announcing Mr. Walker's appointment is filed herewith as Exhibit 99.1 and incorporated herein by reference.

Item 9.01    Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No.	Description
99.1	News release of Unum Group dated July 1, 2026.
104	Cover Page Interactive Date File (embedded with the Inline XBRL document).

SIGNATURES

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.

	Unum Group
	(Registrant)
Date: July 1, 2026	By:	/s/ J. Paul Jullienne
		Name:	J. Paul Jullienne
		Title:	Vice President, Managing Counsel, and
			Corporate Secretary

EX-99.1

	Exhibit 99.1
	1 Fountain Square Chattanooga, TN 37402 www.unum.com

news	FOR IMMEDIATE RELEASE
	Contacts
	MEDIA	Emily Downing-Baer edowning@unum.com

Unum Group Promotes Andrew Walker to Executive Vice President, Chief Customer Operations Officer

CHATTANOOGA, Tenn., July 1, 2026 – Unum Group (NYSE: UNM) has promoted Andrew Walker to Executive Vice President, Chief Customer Operations Officer. In this role, Walker will continue to lead the company's Customer Operations organization, overseeing the teams, capabilities and transformation efforts that support how Unum Group shows up for customers, partners and the businesses it serves.

"Andrew has quickly made an impact by strengthening the way we serve customers and run our operations," said Rick McKenney, president and chief executive officer of Unum Group. "This expanded capacity reflects the critical role Customer Operations plays in how we deliver for customers every day. Andrew brings the operational discipline and focus needed to keep that work moving forward."

Walker joined Unum Group in 2025 as Senior Vice President, Chief Customer Operations Officer. Since joining the company, he has focused on strengthening operational performance, simplifying processes and advancing initiatives that support better outcomes for customers, partners and the business.

As Executive Vice President, Walker will continue leading Customer Operations, including benefit operations, service delivery and transformation initiatives that support Unum Group's commitment to delivering for customers when they need it most.

"Unum Group's purpose comes to life through the experiences we create for customers every day," said Walker. "I'm honored by the opportunity to continue working alongside talented teams across the company as we strengthen our capabilities, simplify how we work and find new ways to deliver even greater value for the people and businesses we serve."

Prior to joining Unum Group, Walker served as Executive Vice President and Chief Operations Officer at Western Union. He also held senior operations leadership roles at USAA and Nationwide. Walker earned a Bachelor of Science degree in accounting from Herbert Lehman College in New York and completed the Bank Administration Institute at Owen Graduate School of Management at Vanderbilt University, focused on innovation, marketing strategy and leadership for the banking industry.

# # #

About Unum Group

Unum Group (NYSE: UNM), a leading international provider of workplace benefits and services, has been helping workers and their families thrive for more than 175 years. Through its Unum and Colonial Life brands, the company offers disability, life, accident, critical illness, dental, and vision insurance; leave and absence management support; and behavioral health services. In 2025, Unum Group reported revenues of $13.1 billion and paid $8.3 billion in benefits. The Fortune 500 company is recognized as one of the World’s Most Ethical Companies by Ethisphere®.

Visit the Unum Group newsroom (https://www.unumgroup.com/newsroom) for more information, and connect with us on LinkedIn (https://www.linkedin.com/company/unum), Facebook (https://www.facebook.com/unumbenefits/), and Instagram (https://www.instagram.com/unumbenefits/).

XML

Document and Entity Information	Jul. 01, 2026
Entity Information
Entity Central Index Key	0000005513
Amendment Flag	false
Document Type	8-K
Document Period End Date	Jul. 01, 2026
Entity Registrant Name	UNUM GROUP
Entity Incorporation, State or Country Code	DE
Entity File Number	001-11294
Entity Tax Identification Number	62-1598430
Entity Address, Address Line One	1 Fountain Square
Entity Address, City or Town	Chattanooga
Entity Address, State or Province	TN
Entity Address, Postal Zip Code	37402
City Area Code	423
Local Phone Number	294-1011
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Entity Emerging Growth Company	false
NEW YORK STOCK EXCHANGE, INC. | Common Class A
Entity Information
Title of 12(b) Security	Common stock, $0.10 par value
Trading Symbol	UNM
Security Exchange Name	NYSE
NEW YORK STOCK EXCHANGE, INC. | 6.250% Junior Subordinated Notes due 2058
Entity Information
Title of 12(b) Security	6.250% Junior Subordinated Notes due 2058
Trading Symbol	UNMA
Security Exchange Name	NYSE