Summary Prospectus for New Investors by Investment Company - Form 497VPI

Voya Retirement Insurance and Annuity Company

and its

Variable Annuity Account C

UNIVERSITY OF TEXAS SYSTEM RETIREMENT PROGRAMS

Supplement Dated August 2, 2024 to the Contract Prospectus,
Initial Summary Prospectus, and Updating Summary Prospectus,
each dated May 1, 2024, 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 YOUR CONTRACT PROSPECTUS AND SUMMARY PROSPECTUSES

Certain information has been corrected in the CURRENT EXPENSES and AVERAGE ANNUAL RETURNS sections in APPENDIX A: FUNDS AVAILABLE UNDER THE CONTRACT ("APPENDIX A"), of the contract prospectus and in APPENDIX: FUNDS AVAILABLE UNDER THE CONTRACT ("APPENDIX"), of the summary prospectuses. In that regard, the information in APPENDIX A of the contract prospectus and APPENDIX of the summary prospectuses for the funds listed below are hereby replaced in their entirety, with the following:

INVESTMENT OBJECTIVE	FUND NAME INVESTMENT ADVISER/SUBADVISER	CURRENT EXPENSES*	AVERAGE ANNUAL TOTAL RETURNS (as of 12/31/2023)
1 Year	5 Years	10 Years
Seeks to provide long-term growth of capital.	American Funds® - EuroPacific Growth Fund® (Class R-4)1 Investment Adviser: Capital Research and Management CompanySM	0.82%	15.65%	7.66%	4.53%
Seeks to provide long-term growth of capital. Future income is a secondary objective.	American Funds® - New Perspective Fund® (Class R-4)1 Investment Adviser: Capital Research and Management CompanySM	0.77%	24.57%	13.51%	9.72%

*	Operating expenses reflecting applicable waivers or expense limitations as reported in the Fund's expenses.
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.

INVESTMENT OBJECTIVE	FUND NAME INVESTMENT ADVISER/SUBADVISER	CURRENT EXPENSES*	AVERAGE ANNUAL TOTAL RETURNS (as of 12/31/2023)
1 Year	5 Years	10 Years
Seeks long-term total return. Under normal market conditions, the Fund invests at least 80% of its net assets in investments of small-capitalization companies.	Franklin Small Cap Value VIP Fund (Class 2)2 Investment Adviser: Franklin Mutual Advisers, LLC	0.91%	12.75%	11.06%	7.04%
Seeks maximum real return, consistent with preservation of real capital and prudent investment management.	PIMCO Real Return Portfolio (Administrative Class) Investment Adviser: Pacific Investment Management Company LLC	0.84%	3.67%	3.16%	2.25%
Seeks current income with capital appreciation and growth of income.	Templeton Global Bond Fund (Advisor Class)3 Investment Adviser: Franklin Advisers, Inc.	0.72%	2.72%	-2.20%	-0.23%
Seeks capital appreciation.	Voya Global Insights Portfolio (Class I)** Investment Adviser: Voya Investments, LLC Subadviser: Voya Investment Management Co. LLC***	0.75%	32.69%	11.91%	8.30%
Seeks maximum total return.	Voya International High Dividend Low Volatility Portfolio (Class I)4 Investment Adviser: Voya Investments, LLC Subadviser: Voya Investment Management Co., LLC	0.74%	14.87%	6.34%	2.67%

*	Operating expenses reflecting applicable waivers or expense limitations as reported in the Fund's expenses.
**	Effective December 1, 2023, the VY® Invesco Global Portfolio changed its name to Voya Global Insights Portfolio.
***	Effective December 1, 2023, Invesco Advisors, Inc. was replaced as subadviser for the Voya Global Insights Portfolio with Voya Investment Management Co. LLC.
2	The Franklin Small Cap Value VIP Fund is closed to investment by new Investors. Existing retirement plans and individual Investors who have investment in the Subaccount that corresponds to this fund may leave their investment in that Subaccount and may continue to make additional purchases and exchanges.
3	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.
4	This Fund employs a managed volatility strategy. See "THE INVESTMENT OPTIONS - The Variable Investment Options - Funds with Managed Volatility Strategies" for more information.

INVESTMENT OBJECTIVE	FUND NAME INVESTMENT ADVISER/SUBADVISER	CURRENT EXPENSES*	AVERAGE ANNUAL TOTAL RETURNS (as of 12/31/2023)
1 Year	5 Years	10 Years
Seeks investment results (before fees and expenses) that correspond to the total return (which includes capital appreciation and income) of the Russell Top 200® Index.	Voya RussellTM Large Cap Index Portfolio (Class I) Investment Adviser: Voya Investments, LLC Subadviser: Voya Investment Management Co. LLC	0.36%	29.41%	16.10%	12.31%
Seeks investment results (before fees and expenses) that correspond to the total return (which includes capital appreciation and income) of the Russell Top 200® Value Index.	Voya RussellTM Large Cap Value Index Portfolio (Class S)5 Investment Adviser: Voya Investments, LLC Subadviser: Voya Investment Management Co. LLC	0.59%	9.99%	10.10%	7.82%
Until the day prior to its Target Date, the Portfolio seeks to provide total return consistent with an asset allocation targeted at retirement in approximately 2035. On the Target Date, the Portfolio's investment objective will be to seek to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.	Voya Solution 2035 Portfolio (Class I)6 Investment Adviser: Voya Investments, LLC Subadviser: Voya Investment Management Co. LLC	0.73%	17.98%	9.06%	6.69%
Seeks growth of capital.	Voya Solution Aggressive Portfolio** Investment Adviser: Voya Investments, LLC Subadviser: Voya Investment Management Co. LLC	0.89%	21.21%	11.21%	7.69%

*	Operating expenses reflecting applicable waivers or expense limitations as reported in the Fund's expenses.
**	Effective July 12, 2024, the Voya Strategic Allocation Growth Portfolio (Class I) merged into the Voya Solution Aggressive Portfolio (Class I).
5	This Fund is no longer available to new investments.
6	This Fund is structured as a Fund of Funds that invests directly in shares of underlying Funds. See "THE INVESTMENT OPTIONS - The Variable Investment Options - Funds of Funds" for more information.

INVESTMENT OBJECTIVE	FUND NAME INVESTMENT ADVISER/SUBADVISER	CURRENT EXPENSES*	AVERAGE ANNUAL TOTAL RETURNS (as of 12/31/2023)
1 Year	5 Years	10 Years
Seeks to provide capital growth through a diversified asset allocation strategy.	Voya Solution Balanced Portfolio (Class I)** Investment Adviser: Voya Investments, LLC Subadviser: Voya Investment Management Co. LLC	0.80%	15.38%	7.73%	5.96%
Seeks to provide a combination of total return and stability of principal consistent with an asset allocation targeted to retirement.	Voya Solution Conservative Portfolio (Class I)*** Investment Adviser: Voya Investments, LLC Subadviser: Voya Investment Management Co. LLC	0.66%	9.32%	4.25%	3.72%
A non-diversified Portfolio that seeks long-term growth through investments in stocks.	VY® T. Rowe Price Growth Equity Portfolio (Class I) Investment Adviser: Voya Investments, LLC Subadviser: T. Rowe Price Associates, Inc.	0.71%	46.89%	13.37%	11.70%

*	Operating expenses reflecting applicable waivers or expense limitations as reported in the Fund's expenses.
**	Effective July 12, 2024, the Voya Strategic Allocation Moderate Portfolio (Class I) merged into the Voya Solution Balanced Portfolio (Class I).
***	Effective July 12, 2024, the Voya Strategic Allocation Conservative Portfolio merged into the Voya Solution Conservative Portfolio.

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 summary prospectuses, contract prospectus, 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.

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