Variable Annuity Acct C of Voya Retirement Insurance & Annuity Co.

04/01/2026 | Press release | Distributed by Public on 04/01/2026 14:46

Summary Prospectus for New Investors by Investment Company (Form 497VPI)

Voya Retirement Insurance and Annuity Company

and its

Variable Annuity Account C

Multiple Sponsored Retirement Options

Supplement Dated April 1, 2026 to the Contract Prospectus,

Initial Summary Prospectus, and Updating Summary Prospectus

each dated May 1, 2025, as amended

This supplement to the variable annuity contract prospectus ("contract prospectus"), initial summary prospectus and updating summary prospectus ("summary prospectuses"), updates and amends certain information contained in them. Please read this supplement carefully and keep it with the contract prospectus and summary prospectuses that you may have received, for future reference. Capitalized terms not defined in this supplement shall have the meaning given to them in the contract prospectus and summary prospectuses.

NOTICE OF IMPORTANT INFORMATION ABOUT

UPCOMING FUND CHANGES AND THE ADDITION OF NEW FUNDS

Effective March 10, 2026, the American Century Investments® Disciplined Core Value Fund changed its name to the American Century Investments® Disciplined Value Fund.

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Effective May 1, 2026, the VY® Columbia Small Cap Value II Portfolio will change its name to the VY® Columbia Small Cap Value and Inflection Portfolio.

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On January 23, 2026, the Board of Trustees of the Voya Balanced Income Portfolio ( the "Portfolio") approved a number of changes to the structure of the Portfolio that would permit the Portfolio to be sold directly to the public (the "Conversion"). Currently, the purchase and sale of shares of the Portfolio may be made only by separate accounts of insurance companies serving as investment options under variable contracts or by qualified pension or retirement plans, custodian accounts, and certain investment advisers and their affiliates, other investment companies, or permitted investors. Following the Conversion, the eligibility to invest in the Portfolio will be revised and the Portfolio will be offered directly to the public. It is expected that these changes will take effect on or about July 24, 2026 (the "Effective Date").

No insurance company separate accounts will be invested in the Portfolio at the time of the Conversion. Please contact your insurance company for more information about how the Conversion will impact your variable contract and alternative investment options.

Multiple Sponsored Retirement Options only utilizes share Class I in this Portfolio.

Qualified pension and retirement plans will remain eligible to invest in the Portfolio.

There will be no changes to the investment objective, investment strategy or investment risks of the Portfolio as a result of this Conversion.

X.01107-25E April 2026

To facilitate this Conversion, on or about the Effective Date the following changes will occur:

1. The Portfolio name will change from Voya Balanced Income Portfolio to Voya Balanced Income Fund.
2. Share classes will be renamed as follows:
Current Share Class Name New Share Class Name
ADV R
I I
S R3
S2 A
3. The eligibility requirements for the Portfolio will change. Purchase and sales of the Portfolio will no longer be limited only to separate accounts of insurance companies serving as investment options under variable contractors or by qualified pension or retirement plans, custodian accounts, and certain investment advisers and their affiliates, other investment companies, or permitted investors. Instead, the Portfolio will be available for purchase by the general public and eligibility will vary by share class as follows:
Share Class Share Class Eligibility
Class A No restrictions/generally available
Class I Available to: (1) qualified retirement plans such as 401(a), 401(k), or other defined contribution plans and defined benefit plans; (2) 529 college savings plans; (3) insurance companies and foundations investing for their own account; (4) wrap programs offered by broker-dealers and financial institutions; (5) accounts of, or managed by, trust departments; (6) individuals whose accounts are managed by an investment adviser representative; (7) employees of Voya IM who are eligible to participate in "notional" bonus programs sponsored by Voya IM; (8) retirement plans affiliated with Voya Financial, Inc.; (9) Voya Financial, Inc. affiliates for purposes of corporate cash management; (10) other registered investment companies; and (11) (a) investors purchasing Class I shares through brokerage platforms that invest in the Voya funds' Class I shares through omnibus accounts and have agreements with the Fund distributor to offer such shares and (b) such brokerage platforms' omnibus accounts.
Class R and Class R3 Available to qualified retirement plans including, but not limited to 401(k) plans, 457 plans, employer sponsored 403(b) plans, IRAs, Simplified Employee Pension Plans, other accounts or plans whereby Class R or R3 shares, as applicable, are held on the books of the Portfolio through omnibus accounts (either at the plan level or the level of the plan administrator).

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X.01107-25E April 2026

Effective May 1, 2026, the following funds will be added to the Contracts of APPENDIX A: FUNDS AVAILABLE UNDER THE CONTRACT, in the contract prospectus and initial summary prospectus, and in the APPENDIX: FUNDS AVAILABLE UNDER THE CONTRACT, of the updating summary prospectus.

INVESTMENT OBJECTIVE

FUND NAME

INVESTMENT ADVISER/SUBADVISER

CURRENT EXPENSES

AVERAGE ANNUAL TOTAL RETURNS

(as of 12/31/2025)

1

Year

5

Years

10

Years

Seeks capital appreciation.

Fidelity Advisor® International Small Cap Opportunities Fund (Class A)

Investment Adviser: Fidelity Management & Research Company LLC

1.26% 24.65% 4.66% 8.21%
Seeks long-term capital growth.

Victory Pioneer Global Equity Fund

(Class A)1

Investment Adviser: Victory Capital Management Inc.

1.10%* 41.08% 15.40% 12.75%
* Current expenses reflect applicable waivers or expense limitations as reported in the Fund's prospectus.
1 This Fund is available to the general public in addition to being available through variable annuity contracts. See "FEDERAL TAX CONSIDERATIONS - Special Considerations for Section 403(b) Plans" for a discussion of investment in one of the public Funds under 403(b) or Roth 403(b) annuity contracts.

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MORE INFORMATION IS AVAILABLE

More information about the funds available through your Contract, including information about the risks associated with investing in them, can be found in the current prospectus, summary prospectuses, and Statement of Additional Information for each fund. You may obtain these documents by contacting Customer Service.

If you received a summary prospectus for any of the funds available through your Contract, you may obtain a full contract prospectus and other fund information free of charge by either accessing the internet address, calling the telephone number or sending an email request to the email address shown on the front of the fund's summary prospectus.

Please retain this supplement for future reference.

Insurance products, annuities and retirement plan funding issued by (third party administrative services may also be provided by) Voya Retirement Insurance and Annuity Company, One Orange Way, Windsor, CT 06095. Securities are distributed by Voya Financial Partners, LLC (member SIPC). Securities may also be distributed through other broker-dealers with which Voya Financial Partners, LLC has selling agreements.

X.01107-25E April 2026
Variable Annuity Acct C of Voya Retirement Insurance & Annuity Co. published this content on April 01, 2026, and is solely responsible for the information contained herein. Distributed via EDGAR on April 01, 2026 at 20:46 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]