Exhibit 99.1
Sun Life announces offering of Subordinated Unsecured
Debentures
/NOT FOR DISTRIBUTION TO U.S.
NEWSWIRE SERVICES OR FOR DISSEMINATION IN THE UNITED STATES./
TORONTO, June 16, 2026 /CNW/ - Sun Life Financial
Inc. (TSX: SLF) (NYSE: SLF) (the "Company") announced today that it intends to issue in Canada $750 million principal amount
of Series 2026-1 Subordinated Unsecured 4.21% Fixed/Floating Debentures due 2038 (the "Debentures"). The offering is expected
to close on June 19, 2026. The net proceeds will be used for general corporate purposes, which may include investments in subsidiaries,
repayment of indebtedness and other strategic investments.
Details of the offering will be set out in a pricing
supplement that the Company intends to issue pursuant to its short form base shelf prospectus and its prospectus supplement, each dated
March 17, 2025, all of which are or will be available on the SEDAR+ profile for Sun Life Financial Inc. at www.sedarplus.ca. The Debentures
will be sold on a reasonable best efforts agency basis by a syndicate led by CIBC Capital Markets, RBC Capital Markets and TD Securities,
as co-leads. The proceeds from this offering are expected to qualify for Tier 2 capital.
The Debentures have not been and will not be registered
under the United States Securities Act of 1933, as amended, and may not be offered, sold or delivered, directly or indirectly, within
the United States of America and its territories and possessions or to, or for the account or benefit of, United States persons. This
release does not constitute an offer to sell or a solicitation to buy such securities in the United States.
Forward-Looking Statements
From time to time, the Company makes written or oral
forward-looking statements within the meaning of certain securities laws, including the "safe harbour" provisions of the United
States Private Securities Litigation Reform Act of 1995 and applicable Canadian securities legislation. Forward-looking statements contained
in this news release include statements (i) regarding the offering, including the closing and use of proceeds of the offering; (ii) that
are predictive in nature or that depend upon or refer to future events or conditions; and (iii) that include words such as "intends",
"expects", "will" and similar expressions. The forward-looking statements in this news release are stated as at June
16, 2026, represent the Company's current expectations, estimates and projections regarding future events and are not historical facts.
These statements are not a guarantee of future performance and involve assumptions and risks and uncertainties that are difficult to predict.
Some of these assumptions and risks and uncertainties are described further in the Company's management's discussion and analysis for
the year ended December 31, 2025 under the headings "Forward-looking Statements" and "Risk Management", in the risk
factors set out in the Company's annual information form for the year ended December 31, 2025 under the heading "Risk Factors"
and in the Company's interim management's discussion and analysis for the quarter ended March 31, 2026 under the heading "Risk Management",
in the other factors detailed in the Company's annual and interim financial statements and in the Company's other filings with Canadian
and U.S. securities regulators, which are available for review at www.sedarplus.ca and www.sec.gov, respectively. Actual results may differ
materially from those expressed, implied or forecasted in such forward-looking statements.
The Company does not undertake any obligation to update
or revise its forward-looking statements to reflect events or circumstances after the date of this news release or to reflect the occurrence
of unanticipated events, except as required by law.
About Sun Life
Sun Life is a leading international financial services organization providing asset management, wealth, insurance and health solutions
to individual and institutional Clients. Sun Life has operations in a number of markets worldwide, including Canada, the United States,
the United Kingdom, Ireland, Hong Kong, the Philippines, Japan, Indonesia, India, China, Australia, Singapore, Vietnam, Malaysia and Bermuda.
As of March 31, 2026, Sun Life had total assets under management of $1.58 trillion. For more information, please visit www.sunlife.com.
Sun Life Financial Inc. trades on the Toronto (TSX),
New York (NYSE) and Philippine (PSE) stock exchanges under the ticker symbol SLF.
Note to editors: All figures in Canadian dollars.
To contact Sun Life media relations, please email
Media.Relations@sunlife.com.
To contact Sun Life investor relations, please
email Investor_Relations@sunlife.com.
SOURCE Sun Life Financial Inc. - Financial News
View original content to download multimedia: http://www.newswire.ca/en/releases/archive/June2026/16/c2760.html
%CIK: 0001097362
CO: Sun Life Financial Inc. - Financial News
CNW 17:01e 16-JUN-26