As filed with the Securities and Exchange Commission on May 18, 2026

Securities Act Registration No. 333-284107
Investment Company Registration No. 811-24039

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-2

First Eagle Tactical Municipal Opportunities Fund
(Exact Name of Registrant as Specified in Charter)

1345 Avenue of the Americas
New York, New York 10105
(Address of Principal Executive Offices)
(212) 698-3300
(Registrant’s Telephone Number, Including Area Code)
David O’Connor
First Eagle Investment Management, LLC
1345 Avenue of the Americas
New York, NY 10105
(Name and Address of Agent for Service)

Copies to:
Nathan J. Greene, Esq.
Sidley Austin LLP
787 Seventh Avenue
New York, NY 10019

Approximate Date of Commencement of Proposed Public Offering:

As soon as practicable after the effective date of this Registration Statement.

It is proposed that this filing will become effective (check appropriate box):

If appropriate, check the following box:

Check each box that appropriately characterizes the Registrant:

EXPLANATORY NOTE

This Post-Effective Amendment No. 4 to the Registration Statement on Form N-2 (File Nos. 333-284107 and 811-24039) (the “Registration Statement”) of First Eagle Tactical Municipal Opportunities Fund (the “Registrant”) is being filed solely for the purpose of filing additional exhibits to the Registration Statement. Accordingly, this Post-Effective Amendment No. 4 consists only of a facing page, this explanatory note and Part C of the Registration Statement. This Post-Effective Amendment No. 4 does not modify any other part of the Registration Statement. The contents of the Registration Statement are hereby incorporated by reference.

PART C

Other Information

Item 25. Financial Statements And Exhibits

The agreements included or incorporated by reference as exhibits to this registration statement contain representations and warranties by each of the parties to the applicable agreement. These representations and warranties were made solely for the benefit of the other parties to the applicable agreement and (i) were not intended to be treated as categorical statements of fact, but rather as a way of allocating the risk to one of the parties if those statements prove to be inaccurate; (ii) may have been qualified in such agreement by disclosures that were made to the other party in connection with the negotiation of the applicable agreement; (iii) may apply contract standards of “materiality” that are different from “materiality” under the applicable securities laws; and (iv) were made only as of the date of the applicable agreement or such other date or dates as may be specified in the agreement.

The Registrant acknowledges that, notwithstanding the inclusion of the foregoing cautionary statements, it is responsible for considering whether additional specific disclosures of material information regarding material contractual provisions are required to make the statements in this registration statement not misleading.

Item 26. Marketing Arrangements

See the Underwriting Agreement filed as Exhibit (h).

Item 27. Other Expenses Of Issuance And Distribution

Not Applicable.

Item 28. Persons Controlled By Or Under Common Control With The Registrant

None

Item 29. Number Of Holders Of Shares

As of April 1, 2026:

Item 30. Indemnification

Reference is made to Article V, Section 5.3 of Registrant’s Declaration of Trust. Insofar as indemnification for liabilities arising under the Securities Act of 1933, as amended (the “Securities Act”) may be permitted to directors, officers and controlling persons of the Registrant pursuant to the provisions described above, or otherwise, the Registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or paid by a director, officer or controlling person in the successful defense of an action suit or proceeding) is asserted by a director, officer or controlling person in connection with the securities being registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Act and will be governed by the final adjudication of such issue.

Item 31. Business And Other Connections Of Investment Adviser

The descriptions of FEIM under the caption “Additional Risks of the Fund” in the Prospectus and under the caption “Management of the Fund” in the Statement of Additional Information of this Registration Statement are incorporated by reference herein. Information as to the trustees and officers of FEIM, together with information as to any other business, profession, vocation or employment of a substantial nature engaged in by the trustees and officers of FEIM in the last two years, is included below.

Item 32. Location Of Accounts And Records

The books, accounts and records of the Registrant required by Section 31(a) under the Investment Company Act of 1940, as amended and the rules promulgated thereunder are maintained at the office of the Registrant at 1345 Avenue of the Americas, New York, New York 10105.

Item 33. Management Services

Not Applicable.

Item 34. Undertakings

(1) Not Applicable

(2) Not Applicable.

(3) (a) To file, during any period in which offers or sales are being made, a post-effective amendment to the registration statement: (i) to include any prospectus required by Section 10(a)(3) of the 1933 Act; (ii) to reflect in the Prospectus any facts or events after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the

aggregate, represent a fundamental change in the information set forth in the registration statement; and (iii) to include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement.

(b) That, for the purpose of determining any liability under the 1933 Act, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of those securities at that time shall be deemed to be the initial bona fide offering thereof.

(c) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

(d) That, for the purpose of determining liability under the 1933 Act to any purchaser:

(e) That for the purpose of determining liability of the Registrant under the 1933 Act to any purchaser in the initial distribution of securities:

The undersigned Registrant undertakes that in a primary offering of securities of the undersigned Registrant pursuant to this registration statement, regardless of the underwriting method used to sell the securities to the purchaser, if the securities are offered or sold to such purchaser by means of any of the following communications, the undersigned Registrant will be a seller to the purchaser and will be considered to offer or sell such securities to the purchaser:

(1) any preliminary prospectus or prospectus of the undersigned Registrant relating to the offering required to be filed pursuant to Rule 424 under the 1933 Act;

(2) any free writing prospectus relating to the offering prepared by or on behalf of the undersigned Registrant or used or referred to by the undersigned Registrants;

(3) the portion of any advertisement pursuant to Rule 482 under the 1933 Act relating to the offering containing material information about the undersigned Registrant or its securities provided by or on behalf of the undersigned Registrant; and

(4) any other communication that is an offer in the offering made by the undersigned Registrant to the purchaser.

(4) Not Applicable.

(5) Not Applicable.

(6) Insofar as indemnification for liabilities arising under the 1933 Act may be permitted to directors, officers and controlling persons of the Registrant pursuant to the foregoing provisions, or otherwise, the Registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the 1933 Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or paid by a director, officer or controlling person of the Registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the 1933 Act and will be governed by the final adjudication of such issue.

(7) Registrant undertakes to send by first class mail or other means designed to ensure equally prompt delivery within two business days of receipt of a written or oral request, any Prospectus or Statement of Additional Information.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, the Registrant has duly caused this Post-Effective Amendment No. 4 to its Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of New York, in the State of New York, on the 18th day of May 2026.

Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities and on the dates indicated.

Exhibit Index

ATTACHMENTS / EXHIBITS

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