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ANNUAL NOTICE

April 25, 2025

THE GUARDIAN INVESTOR INCOME ACCESS

Issued by The Guardian Insurance & Annuity Company, Inc.

Separate Account Q

This Annual Notice for the Guardian Investor Income Access, an individual flexible premium deferred variable annuity contract offered by The Guardian Insurance & Annuity Company, Inc. (GIAC, we, us, our), provides you with an update of changes to your contract that have occurred since May 1, 2024. In addition, this Annual Notice provides key information about your contract that you should review, including a current list of Funds available under your contract. Please read this Annual Notice carefully and retain it with your contract prospectus for future reference.

The most recent prospectus for the Guardian Investor Income Access dated May 1, 2018, contains more information about the contract, including its features, benefits, and risks. You can find the prospectuses for the underlying mutual funds, the most recent audited financial statements of Separate Account Q, and other information about the contract online at: https://Guardianlife.onlineprospectus.net/Guardianlife/giia/?ctype=great_wested_notice. You can also obtain this information at no cost by calling 1-800-830-4147 or by sending an email request to GIAC_CRU@glic.com/.

Additional information about certain investment products, including variable annuities, has been prepared by the Securities and Exchange Commission’s staff and is available at Investor.gov.

The Securities and Exchange Commission has not approved or disapproved the contract or passed upon the adequacy of this Annual Notice. Any representation to the contrary is a criminal offense.

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Special Terms Used in This Annual Notice

Accumulation Period

The period between the issue date of the contract and the Annuity Commencement Date.

Accumulation Value

The value of all the accumulation units in the Variable Investment Options and the fixed-rate option that are credited to a contract.

Customer Service Office Contact Center

For telephonic communications: Customer Service Office Contact Center 8:00 a.m. to 7:00 p.m. Eastern Time 1-800-830-4147.

Funds

The open-end management investment companies, each corresponding to a variable investment option.

Mailing Address

For private express mail with tracking number:

Talcott Resolution – Annuity Service Operations

Administrator for your Guardian Annuity Contract

6716 Grade Ln., Building 9, Suite 910

Louisville, KY 40213

For standard mail delivery without tracking number:

Talcott Resolution – Annuity Service Operations

Administrator for your Guardian Annuity Contract

P.O. Box 14293

Lexington, KY 40512-4293

Net Premium

A premium paid by the owner to us in accordance with the provisions of the contract, less any applicable annuity taxes.

Variable Investment Options

The Funds underlying the contract are the Variable Investment Options – as distinguished from the fixed-rate option – available for allocations of Net Premium payments and allocation values.

Updated Information About Your Contract

The information in this Annual Notice is a summary of certain contract features that have changed since May 1, 2024. This may not reflect all of the changes that have occurred since you entered into your contract.

There have been changes to the underlying Funds’ information in the Fees and Expenses table and Appendices A and B that are contained in this Annual Notice.

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Important Information You Should Consider About The Contract

An investment in the contract is subject to fees, risks, and other important considerations, some of which are briefly summarized in the following table. You should review the prospectus for additional information about these topics.

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Appendix A: Funds Available Under the Contract

The following is a list of Funds available under the contract. More information about the Funds is available in the prospectuses for the Funds, which may be amended from time to time and can be found online at:

https://Guardianlife.onlineprospectus.net/Guardianlife/giia/?ctype=great_wested_notice. You can also request this information at no cost by calling the Customer Service Office Contact Center at 1-800-830-4147 or by sending an email request to GIAC_CRU@glic.com. Depending on the optional benefits you choose, you may not be able to invest in certain Funds.

The current expenses and performance information below reflects fee and expenses of the Funds, but do not reflect the other fees and expenses that your contract may charge. Expenses would be higher and performance would be lower if these other charges were included. Each Fund’s past performance is not necessarily an indication of future performance.

¹ There is no assurance that this Fund will be able to maintain a stable net asset value per share. In addition, during extended periods of low interest rates, and partly as a result of asset-based separate account charges, the yield on this investment account may become low and possibly negative.

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APPENDIX B

FUNDS AVAILABLE UNDER THE GLWB RIDER

For contracts issued in conjunction with application dated during the periods below, the chart lists the models available to contracts with the GLWB Rider. During the entire time this rider is in effect, you must invest all of your premium payments and the contract Accumulation Value in one of the allocation models listed under the applicable period for your contract.

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Please retain this Annual Notice for future reference. The last prospectus and statement of additional information for the contract, dated May 1, 2018, contains more information about the contract. You may contact us to request this additional information free of charge. Instructions for contacting us are included on the front cover page of this notice.

EDGAR Contract ID: C000024017