Guggenheim Taxable Muni Bond Trust (NYSE: GBAB) signs new BNY service deals

Rhea-AI Filing Summary

Guggenheim Taxable Municipal Bond & Investment Grade Debt Trust entered into new agreements with The Bank of New York Mellon on December 15, 2025 to provide fund administration, accounting, pricing, custody and foreign custody management services. Under the new administration and accounting agreement, BNY is paid a fee based on the Trust’s average daily net assets, subject to a minimum annual fee, and is reimbursed for certain out-of-pocket expenses. Under the custody arrangements, BNY receives a monthly fee tied in part to average daily net assets plus transaction-related charges.

On the same date, the Trust terminated its prior administration and accounting agreement with MUFG Investor Services (US) LLC and its prior custody and foreign custody manager agreements with BNY that dated from 2007. The Trust states that, aside from ordinary course payments due under those prior agreements through their effective termination dates, no termination or other fees are payable in connection with ending the earlier arrangements.

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of report (Date of earliest event reported): December 15, 2025

Guggenheim Taxable Municipal Bond & Investment Grade Debt Trust

(Exact name of Registrant as Specified in Its Charter)

Delaware		811-22437				27-3396957
(State or other jurisdiction		(Commission File Number)				(I.R.S. Employer
of incorporation)						Identification No.)
227 West Monroe Street
Chicago, Illinois				60606
(Address of principal executive offices)				(Zip Code)
Registrant’s telephone number, including area code: (312) 827-0100
N/A
(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company    ¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Common Shares of Beneficial Interest, $0.01 par value		GBAB		New York Stock Exchange

Item 1.01. Entry into a Material Definitive Agreement.

Entry into Fund Administration and Accounting Agreement with BNY

On December 15, 2025, Guggenheim Taxable Municipal Bond & Investment Grade Debt Trust (NYSE: GBAB) (the “Trust”) entered into a Fund Administration and Accounting Agreement (the “FAA Agreement”) with The Bank of New York Mellon (“BNY”). Pursuant to the FAA Agreement, BNY performs administrative functions and bookkeeping, accounting and pricing functions for the Trust. For these services, BNY receives a fee, accrued daily and paid monthly, based on average daily net assets of the Trust, subject to a minimum fee per year. The Trust also reimburses BNY for certain out-of-pocket expenses.

The foregoing description of the FAA Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the FAA Agreement, which is filed with this report as Exhibit 1.1 and incorporated herein by reference.

Entry into Custody Agreement with BNY

On December 15, 2025, the Trust entered into a Custody Agreement (the “Custody Agreement”) and Foreign Custody Manager Agreement (“Foreign Custody Agreement”) with BNY amending and replacing the prior agreements with BNY dated July 26, 2007. Pursuant to the Custody Agreement, BNY serves as the Trust’s custodian and holds securities and cash on behalf of the Trust in accordance with the Investment Company Act of 1940, as amended (the “1940 Act”). Pursuant to the Foreign Custody Agreement, BNY provides services as foreign custody manager for the Trust in connection with its services under the Custody Agreement. For its services, BNY receives a monthly fee based upon, among other things, the average daily net assets of the Trust, plus certain charges for securities transactions.

The foregoing description of the Custody Agreement and Foreign Custody Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the Custody Agreement and Foreign Custody Agreement, which are filed with this report as Exhibits 1.2 and 1.3, respectively, and incorporated herein by reference.

Item 1.02. Termination of a Material Definitive Agreement.

Termination of Fund Administration and Accounting Agreement with MUFG

On December 15, 2025, in conjunction with entering into the FAA Agreement, the Trust terminated its existing administration and accounting agreement with MUFG Investor Services (US) LLC (“MUFG”) (the “Prior FAA Agreement”), subject to the provision of certain ongoing transition services. Other than ordinary course payments under the Prior FAA Agreement through the effective date of termination, no termination or other fees are payable by the Trust in connection with the termination of the Prior FAA Agreement.

Termination of Prior Custody Agreement and Foreign Custody Agreement with BNY

On December 15, 2025, in conjunction with entering into the Custody Agreement and Foreign Custody Agreement, the Trust terminated its existing custody agreement and foreign custody manager agreement with BNY (collectively, the “Prior Custody Agreements”). Other than ordinary course payments under the Prior Custody Agreements through the effective date of termination, no termination or other fees are payable by the Trust in connection with the termination of the Prior Custody Agreements.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

1.1 1.2 1.3 Fund Administration and Accounting Agreement between the Trust and The Bank of New York Mellon. Custody Agreement between the Trust and The Bank of New York Mellon Foreign Custody Manager Agreement between the Trust and The Bank of New York Mellon

SIGNATURES

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 hereunto duly authorized.

  GUGGENHEIM TAXABLE MUNICIPAL BOND & INVESTMENT GRADE DEBT TRUST

	Date: December 15, 2025	By: /s/ Amy J. Lee_____
		Name: Amy J. Lee
		Title: Chief Legal Officer and Vice President

FAQ

What new agreements did Guggenheim Taxable Municipal Bond & Investment Grade Debt Trust (GBAB) sign with BNY?

The Trust entered into a new Fund Administration and Accounting Agreement, a new Custody Agreement, and a Foreign Custody Manager Agreement with The Bank of New York Mellon on December 15, 2025. These cover administration, accounting, pricing, custody, and foreign custody management services for the Trust.

What services will BNY provide to GBAB under the new Fund Administration and Accounting Agreement?

Under the new agreement, BNY performs administrative functions plus bookkeeping, accounting, and pricing functions for the Trust. In return, BNY receives a fee accrued daily and paid monthly based on the Trust’s average daily net assets, subject to a minimum annual fee, and is reimbursed for certain out-of-pocket expenses.

How is BNY compensated under the new custody and foreign custody arrangements for GBAB?

Under the Custody Agreement and Foreign Custody Manager Agreement, BNY serves as custodian and foreign custody manager. For these services, BNY receives a monthly fee based in part on the Trust’s average daily net assets, plus charges for securities transactions, as described in the filing.

Which prior agreements did Guggenheim Taxable Municipal Bond & Investment Grade Debt Trust terminate on December 15, 2025?

The Trust terminated its prior administration and accounting agreement with MUFG Investor Services (US) LLC and its prior custody and foreign custody manager agreements with BNY that were dated July 26, 2007. These were replaced by the new agreements with BNY.

Were any termination fees owed when GBAB ended its prior MUFG and BNY custody agreements?

No additional termination consideration is described. The Trust states that other than ordinary course payments due under the prior MUFG administration and accounting agreement and the prior BNY custody agreements through their effective termination dates, no termination or other fees are payable in connection with ending those earlier contracts.

What role does BNY have as foreign custody manager for Guggenheim Taxable Municipal Bond & Investment Grade Debt Trust?

Under the Foreign Custody Manager Agreement, BNY provides foreign custody management services to the Trust in connection with its role as custodian under the Custody Agreement, handling foreign custody arrangements in line with the Trust’s obligations under the Investment Company Act of 1940.