6-K

UNITEDSTATES

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549

FORM 6-K****

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

SUN LIFE FINANCIAL INC.

(the "Company")

(Translation of registrant's name into English)

1York 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.

Indicate by check mark if the registrant is submitting the Form 6-K  in paper as permitted by Regulation S-T Rule 101(b)(1):____

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):____

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, thereunto duly authorized.

Exhibit 99.1

****

Sun Life to host virtual-only format for 2022 Annual Meetings of shareholders and voting policyholders

TORONTO, April 25, 2022 /CNW/ - Sun Life Financial Inc. (TSX: SLF) (NYSE: SLF) today announced that its Annual Meeting of shareholders and the Annual Meeting of voting policyholders of Sun Life Assurance Company of Canada scheduled for Wednesday, May 11, 2022 has been changed to a virtual-only format. Shareholders, voting policyholders, and members of the public will not be able to attend the meeting in person.

This change is being made based on ongoing developments related to the COVID-19 pandemic and reflects Sun Life's commitment to prioritize the health and safety of our shareholders, voting policyholders, employees, Clients and the broader community.

Shareholders and voting policyholders will have the opportunity to attend the meeting online and in real time regardless of their location, submit questions and vote on a number of important matters.

For detailed instructions on how to join the webcast and vote at the virtual meeting, shareholders should refer to the 2022 Management Information Circular and voting policyholders should refer to the Information for Voting Policyholders' Booklet and their proxy form or voting instruction form.

The meeting materials can be accessed electronically on:

SEDAR at https://www.sedar.com

EDGAR at https://www.sec.gov/edgar.shtml

Our website at www.sunlife.com/2022agm

Our transfer agent's website at www.meetingdocuments.com/TSXT/slf

Shareholders and voting policyholders are encouragedto vote in advance by one of the methods described in the 2022 Management Information Circular or Information for Voting Policyholders' Booklet, as applicable. Registered shareholders are asked to return their completed proxies or exercise their vote by the voting deadline on Monday, May 9, 2022 at 5 p.m. (Toronto time). Voting policyholders are asked to return their proxies no later than 5 p.m. (Toronto time) on Wednesday, May 4, 2022.

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 December 31, 2021, Sun Life had total assets under management of $1.44 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

View original content to download multimedia:https://www.prnewswire.com/news-releases/sun-life-to-host-virtual-only-format-for-2022-annual-meetings-of-shareholders-and-voting-policyholders-301532049.html

SOURCE Sun Life Financial Inc.

View original content to download multimedia: http://www.newswire.ca/en/releases/archive/April2022/25/c2203.html

%CIK: 0001097362

CO: Sun Life Financial Inc.

CNW 11:16e 25-APR-22