# EDGAR Filing Document

**Accession Number:** 0001097362
**File Stem:** 0001279569-25-000972
**Filing Date:** 2025-9
**Character Count:** 7943
**Document Hash:** 9cc51fe0097caa9b857cbb86b2b7e6f4
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001279569-25-000972.hdr.sgml**: 20250910

**ACCESSION NUMBER**: 0001279569-25-000972

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 4

**CONFORMED PERIOD OF REPORT**: 20250909

**FILED AS OF DATE**: 20250910

**DATE AS OF CHANGE**: 20250910

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** SUN LIFE FINANCIAL INC
- **CENTRAL INDEX KEY:** 0001097362
- **STANDARD INDUSTRIAL CLASSIFICATION:** LIFE INSURANCE [6311]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 000000000
- **STATE OF INCORPORATION:** Z4
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-15014
- **FILM NUMBER:** 251304642

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** SUN LIFE ASSURANCE CO OF CANADA
- **STREET 2:** ONE YORK STREET
- **CITY:** TORONTO
- **PROVINCE COUNTRY:** A6
- **ZIP:** M5J 0B6
- **BUSINESS PHONE:** 4169794800

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** SUN LIFE ASSURANCE CO OF CANADA
- **STREET 2:** ONE YORK STREET
- **CITY:** TORONTO
- **PROVINCE COUNTRY:** A6
- **ZIP:** M5J 0B6

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** SUN LIFE FINANCIAL SERVICES INC
- **DATE OF NAME CHANGE:** 20030702

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** SUN LIFE FINANCIAL SERVICES OF CANADA INC
- **DATE OF NAME CHANGE:** 20000224

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**<br> **Washington, D.C. 20549**

**FORM 6-K**

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

---

| | |
|:---|:---|
| **For the month of September 2025** | 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](ex991.htm) | [News Release dated September 9, 2025](ex991.htm) |

---

**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.***<br> *(Registrant)* | ****Sun Life Financial Inc.***<br> *(Registrant)* |
| Date: September 9, 2025 | By: | /s/ "*Kevin Armitage*" |
|  |  | Kevin Armitage |
|  |  | AVP & Managing Counsel, Corporate Legal |

---

## Exhibit 99.1

**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, Sept. 9, 2025 /CNW/ - Sun Life Financial Inc. (TSX: SLF) (NYSE: SLF) (the "Company") announced today that it intends to issue in Canada $1 billion principal amount of Series 2025-1 Subordinated Unsecured 4.14% Fixed/Floating Debentures due 2037 (the "Debentures"). The offering is expected to close on September 11, 2025. The net proceeds will be used for general corporate purposes, which may include supporting the acquisition of the Company's remaining interests in the SLC Management affiliates BentallGreenOak and Crescent Capital Group LP, 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 RBC Capital Markets, CIBC 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**<br> 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 September 9, 2025, 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, 2024 under the heading "Forward-looking Statements", in the risk factors set out in the Company's annual information form for the year ended December 31, 2024 under the heading "Risk Factors" and in the Company's interim management's discussion and analysis for the quarter ended June 30, 2025 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**<br> 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 June 30, 2025, Sun Life had total assets under management of $1.54 trillion. For more information, please visit 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/September 2025/09/c5200.html

%CIK: 0001097362

CO: Sun Life Financial Inc. - Financial News

CNW 20:55e 09-SEP-25

### Attached PDF Documents

**Attachment 1:** `ex991.pdf`

_No text found in this document._