Prospectus by Investment Company - Form 497

SPDR SERIES TRUST

SPDR SERIES TRUST

(the "Trust")

Supplement dated May 24, 2024 to the Statement of Additional Information ("SAI")

dated April 30, 2024, as may be supplemented from time to time

The U.S. Securities and Exchange Commission recently adopted rule amendments to shorten the standard settlement cycle for most broker-dealer transactions from T+2 (i.e., two business days after the trade date) to T+1 (i.e., one business day after the trade date), subject to certain exceptions. Consistent with the rule amendments, effective May 28, 2024 (the "Effective Date"), each series of the Trust appearing in this SAI will generally issue creation units on a T+1 basis and generally deliver redemption proceeds on either a T+1, T+2 or T+3 basis. Accordingly, the following changes are made to the SAI as of the Effective Date:

1)	The following replaces the discussion under the heading entitled "PROCEDURES FOR PURCHASE OF CREATION UNITS" within the section entitled "PURCHASE AND REDEMPTION OF CREATION UNITS":

To be eligible to place orders with the Principal Underwriter, as facilitated via the Transfer Agent, to purchase a Creation Unit of a Fund, an entity must be (i) a "Participating Party", i.e., a broker-dealer or other participant in the clearing process through the Continuous Net Settlement System of the NSCC (the "Clearing Process"), a clearing agency that is registered with the SEC; or (ii) a DTC Participant (see "Book Entry Only System"), and (except with respect to the SPDR Bloomberg International Treasury Bond ETF and SPDR Bloomberg Short Term International Treasury Bond ETF) must have the ability to clear through the Federal Reserve System. In addition, each Participating Party or DTC Participant (each, an "Authorized Participant") must execute a Participant Agreement that has been agreed to by the Principal Underwriter and the Transfer Agent, and that has been accepted by the Trust, with respect to purchases and redemptions of Creation Units. Each Authorized Participant will agree, pursuant to the terms of a Participant Agreement, on behalf of itself or any investor on whose behalf it will act, to certain conditions, including that it will pay to the Trust, an amount of cash sufficient to pay the Cash Component together with the creation transaction fee (described below) and any other applicable fees, taxes and additional variable charge.

All orders to purchase Shares directly from a Fund, including non-standard orders, must be placed for one or more Creation Units and in the manner and by the time set forth in the Participant Agreement and/or the applicable order form. The date on which an order to purchase Creation Units (or an order to redeem Creation Units, as set forth below) is received and accepted is referred to as the "Order Placement Date."

An Authorized Participant may require an investor to make certain representations or enter into agreements with respect to the order (e.g., to provide for payments of cash, when required). Investors should be aware that their particular broker may not have executed a Participant Agreement and that, therefore, orders to purchase Shares directly from a Fund in Creation Units have to be placed by the investor's broker through an Authorized Participant that has executed a Participant Agreement. In such cases there may be additional charges to such investor. At any given time, there may be only a limited number of broker-dealers that have executed a Participant Agreement and only a small number of such Authorized Participants may have international capabilities.

On days when the Exchange or the bond markets close earlier than normal, a Fund may require orders to create Creation Units to be placed earlier in the day. In addition, if a market or markets on which a Fund's investments are primarily traded is closed, the Fund will also generally not accept orders on such day(s). Orders must be transmitted by an Authorized Participant by telephone or other transmission method acceptable to the Distributor pursuant to procedures set forth in the Participant Agreement and in accordance with the applicable order form. Those placing orders through an Authorized Participant should allow sufficient time to permit proper submission of the purchase order by the cut-off time. Economic or market disruptions or changes, or telephone or other communication failure may impede the ability to reach the Distributor or an Authorized Participant.

Fund Deposits must be delivered by an Authorized Participant through the Federal Reserve System (for cash and U.S. government securities), or through DTC (for corporate securities and municipal securities), through a subcustody agent (for foreign securities) and/or through such other arrangements allowed by the Trust or its agents. With respect to foreign Deposit Securities, the Custodian shall cause the subcustodian of a Fund to maintain an account into which the Authorized Participant shall deliver, on behalf of itself or the party on whose behalf it is acting, such Deposit Securities. Foreign Deposit Securities must be delivered to an account maintained at the applicable local subcustodian.

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The Fund Deposit transfer must be ordered by the Authorized Participant in a timely fashion so as to ensure the delivery of the requisite number of Deposit Securities or Deposit Cash, as applicable, to the account of a Fund or its agents by no later than the Settlement Date. The "Settlement Date" with respect to a creation order for a Fund is generally the first Business Day ("T+1") after the Order Placement Date.

All questions as to the number of Deposit Securities or Deposit Cash to be delivered, as applicable, and the validity, form and eligibility (including time of receipt) for the deposit of any tendered securities or cash, as applicable, will be determined by the Trust, whose determination shall be final and binding. The amount of cash represented by the Cash Component must be transferred directly to the Custodian through the Federal Reserve Bank wire transfer system in a timely manner so as to be received by the Custodian no later than the Settlement Date. If the Cash Component and the Deposit Securities or Deposit Cash, as applicable, are not received in a timely manner by the Settlement Date, the creation order may be cancelled. Upon written notice to the Distributor, such canceled order may be resubmitted the following Business Day using a Fund Deposit as newly constituted to reflect the then current NAV of the Fund. The delivery of Creation Units so created generally will occur no later than the first Business Day following the day on which the purchase order is deemed received by the Distributor.

The order shall be deemed to be received on the Business Day on which the order is placed provided that the order is placed in proper form prior to the applicable cut-off time and the federal funds in the appropriate amount are deposited by 2:00 p.m. or 3:00 p.m. Eastern time (per applicable instructions), with the Custodian on the Settlement Date. If the order is not placed in proper form as required, or federal funds in the appropriate amount are not received by 2:00 p.m. or 3:00 p.m. Eastern time (per applicable instructions) on the Settlement Date, then the order may be deemed to be rejected and the Authorized Participant shall be liable to the Fund for losses, if any, resulting therefrom. A creation request is considered to be in "proper form" if all procedures set forth in the Participant Agreement, order form and this SAI are properly followed.

Shortened settlement cycles are expected to be available, through which creation transactions can be settled on the trade date in accordance with instructions provided by the Trust and/or Distributor.

2)	The following replaces the discussion under the heading entitled "PROCEDURES FOR REDEMPTION OF CREATION UNITS" within the section entitled "PURCHASE AND REDEMPTION OF CREATION UNITS":

After the Trust has deemed an order for redemption received, the Trust will initiate procedures to transfer the requisite Redemption Securities and the Cash Redemption Amount to the Authorized Participant by the Settlement Date. The "Settlement Date" with respect to a redemption order for a Fund is generally T+1, the second Business Day ("T+2") or the third Business Day ("T+3") after the Order Placement Date. With respect to in-kind redemptions of a Fund, the calculation of the value of the Redemption Securities and the Cash Redemption Amount to be delivered upon redemption will be made by the Custodian according to the procedures set forth under "Determination of Net Asset Value", computed on the Business Day on which a redemption order is deemed received by the Trust. Therefore, if a redemption order in proper form is submitted to the Principal Underwriter by a DTC Participant by the specified time on the Order Placement Date, and the requisite number of Shares of a Fund are delivered to the Custodian prior to 2:00 p.m. or 3:00 p.m. Eastern time (per applicable instructions) on the Settlement Date, then the value of the Redemption Securities and the Cash Redemption Amount to be delivered will be determined by the Custodian on such Order Placement Date. If the requisite number of Shares of the Fund are not delivered by 2:00 p.m. or 3:00 p.m. Eastern time (per applicable instructions) on the Settlement Date, the Fund will not release the underlying securities for delivery unless collateral is posted in such percentage amount of missing Shares as set forth in the Participant Agreement (marked to market daily).

With respect to in-kind redemptions of a Fund, in connection with taking delivery of shares of Redemption Securities upon redemption of Creation Units, an Authorized Participant must maintain appropriate custody arrangements with a qualified broker-dealer, bank or other custody providers in each jurisdiction in which any of the Redemption Securities are customarily traded (or such other arrangements as allowed by the Trust or its agents), to which account such Redemption Securities will be delivered. Deliveries of redemption proceeds generally will be made within T+1, T+2 or T+3. The order form specifies the date at which the delivery of redemption proceeds for a specific Fund is generally expected to occur.

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Due to the schedule of holidays in certain countries, however, the delivery of in-kind redemption proceeds may take longer than one, two or three Business Days, as applicable, after the day on which the redemption request is received in proper form. If the Authorized Participant has not made appropriate arrangements to take delivery of the Redemption Securities in the applicable foreign jurisdiction and it is not possible to make other such arrangements, or if it is not possible to effect deliveries of the Redemption Securities in such jurisdiction, the Trust may, in its discretion, exercise its option to redeem such Shares in cash, and the Authorized Participant will be required to receive its redemption proceeds in cash.

If it is not possible to make other such arrangements, or if it is not possible to effect deliveries of the Redemption Securities, the Trust may in its discretion exercise its option to redeem such Shares in cash, and the redeeming investor will be required to receive its redemption proceeds in cash. In addition, an investor may request a redemption in cash that a Fund may, in its sole discretion, permit. In either case, the investor will receive a cash payment equal to the NAV of its Shares based on the NAV of Shares of the relevant Fund next determined after the redemption request is received in proper form (minus a redemption transaction fee and additional charge for requested cash redemptions specified above, to offset the Trust's brokerage and other transaction costs associated with the disposition of Redemption Securities). A Fund may also, in its sole discretion, upon request of a shareholder, provide such redeemer a portfolio of securities that differs from the exact composition of the Redemption Securities but does not differ in net asset value.

An Authorized Participant submitting a redemption request is deemed to represent to the Trust that, as of the close of the Business Day on which the redemption request was submitted, it (or its client) will own (within the meaning of Rule 200 of Regulation SHO) or has arranged to borrow for delivery to the Trust on or prior to the Settlement Date of the redemption request, the requisite number of Shares of the relevant Fund to be redeemed as a Creation Unit. In either case, the Authorized Participant is deemed to acknowledge that: (i) it (or its client) has full legal authority and legal right to tender for redemption the requisite number of Shares of the applicable Fund and to receive the entire proceeds of the redemption;

and (ii) if such Shares submitted for redemption have been loaned or pledged to another party or are the subject of a repurchase agreement, securities lending agreement or any other arrangement affecting legal or beneficial ownership of such Shares being tendered, there are no restrictions precluding the tender and delivery of such Shares (including borrowed shares, if any) for redemption, free and clear of liens, on the redemption Settlement Date. The Trust reserves the right to verify these representations at its discretion, but will typically require verification with respect to a redemption request from a Fund in connection with higher levels of redemption activity and/or short interest in the Fund. If the Authorized Participant, upon receipt of a verification request, does not provide sufficient verification of its representations as determined by the Trust, the redemption request will not be considered to have been received in proper form and may be rejected by the Trust.

Redemptions of Shares for Redemption Securities will be subject to compliance with applicable federal and state securities laws and each Fund (whether or not it otherwise permits cash redemptions) reserves the right to redeem Creation Units for cash to the extent that the Trust could not lawfully deliver specific Redemption Securities upon redemptions or could not do so without first registering the Redemption Securities under such laws. An Authorized Participant or an investor for which it is acting subject to a legal restriction with respect to a particular security included in the Redemption Securities applicable to the redemption of Creation Units may be paid an equivalent amount of cash. The Authorized Participant may request the redeeming investor of the Shares to complete an order form or to enter into agreements with respect to such matters as compensating cash payment. Further, an Authorized Participant that is not a "qualified institutional buyer," ("QIB") as such term is defined under Rule 144A of the Securities Act, will not be able to receive Redemption Securities that are restricted securities eligible for resale under Rule 144A. An Authorized Participant may be required by the Trust to provide a written confirmation with respect to QIB status in order to receive Redemption Securities.

The right of redemption may be suspended or the date of payment postponed with respect to a Fund (1) for any period during which the Exchange is closed (other than customary weekend and holiday closings); (2) for any period during which trading on the Exchange is suspended or restricted; (3) for any period during which an emergency exists as a result of which disposal of the Shares of the Fund or determination of the NAV of the Shares is not reasonably practicable; or (4) in such other circumstance as is permitted by the SEC.

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3)	The following replaces the first paragraph within the section entitled "LOCAL MARKET HOLIDAY SCHEDULES":

The Trust generally intends to effect deliveries of the Funds' portfolio securities on T+1, T+2 or T+3. The ability of the Trust to effect in-kind redemptions within one, two or three Business Days, as applicable, of receipt of a redemption request is subject, among other things, to the condition that, within the time period from the date of the request to the date of delivery of the securities, there are no days that are local market holidays on the relevant Business Days. For every occurrence of one or more intervening holidays in the local market that are not holidays observed in the United States, the redemption settlement cycle may be extended by the number of such intervening local holidays. In addition to holidays, other unforeseeable closings in a foreign market due to emergencies may also prevent the Trust from delivering securities within one, two or three Business Days, as applicable.

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