UNITED STATES

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer
Pursuant to Rule 13a-16 or 15d-16
under the Securities Exchange Act of 1934

For the month of June 2026

Commission File Number: 001-15014

SUN LIFE FINANCIAL INC.

(Translation of registrant's name into English)

1 York Street, 31st Floor, Toronto, Ontario, M5J 0B6

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ☐

Form 40-F ☒

Exhibits		Description
99.1		News Release dated June 1629, 2026

SIGNATURE

Pursuant to the requirement of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	Sun Life Financial Inc. (Registrant)
Date: June 16, 2026	By:	/s/ “Kevin Armitage”
Date: June 29, 2026	By:	/s/ “Kevin Armitage”
		Kevin Armitage
		AVP & Managing Counsel, Corporate Legal

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