# EDGAR Filing Document

**Accession Number:** 0000797923
**File Stem:** 0000030146-26-000059
**Filing Date:** 2026-2
**Character Count:** 3605
**Document Hash:** dafae51fea6feb7b4aa0c5966a9af42e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000030146-26-000059.hdr.sgml**: 20260217

**ACCESSION NUMBER**: 0000030146-26-000059

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260217

**DATE AS OF CHANGE**: 20260217

**EFFECTIVENESS DATE**: 20260217

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BNY Mellon Opportunistic Municipal Securities Fund
- **CENTRAL INDEX KEY:** 0000797923

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** NY
- **FISCAL YEAR END:** 0430

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-07496
- **FILM NUMBER:** 26637881

**BUSINESS ADDRESS:**
- **STREET 1:** C/O BNY MELLON INVESTMENT ADVISER, INC.
- **STREET 2:** 240 GREENWICH STREET
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10286
- **BUSINESS PHONE:** 2129226400

**MAIL ADDRESS:**
- **STREET 1:** C/O BNY MELLON INVESTMENT ADVISER, INC.
- **STREET 2:** 240 GREENWICH STREET
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10286

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** DREYFUS MUNICIPAL BOND OPPORTUNITY FUND
- **DATE OF NAME CHANGE:** 20081201

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** DREYFUS PREMIER MUNICIPAL BOND FUND
- **DATE OF NAME CHANGE:** 19970605

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** PREMIER MUNICIPAL BOND FUND
- **DATE OF NAME CHANGE:** 19920703

## Series and Classes Contracts Data

### BNY Mellon Opportunistic Municipal Securities Fund (Series ID: S000000090)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class A    | PTEBX         | C000000131 |
| Class C    | DMBCX         | C000000133 |
| Class Z    | DMBZX         | C000001400 |
| Class Y    | DMBYX         | C000173299 |
| Class I    | DMBVX         | C000173300 |

---

## Series and Classes Contracts Data

### BNY Mellon Opportunistic Municipal Securities Fund (Series ID: S000000090)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000000131 | Class A      | PTEBX           |
| C000000133 | Class C      | DMBCX           |
| C000001400 | Class Z      | DMBZX           |
| C000173299 | Class Y      | DMBYX           |
| C000173300 | Class I      | DMBVX           |

February 17, 2026

**BNY MELLON OPPORTUNISTIC MUNICIPAL SECURITIES FUND**

**Supplement to Current Summary Prospectus and Prospectus**

**The following information supersedes and replaces the information in the second paragraph in the sections "Portfolio Management" in the summary prospectus and "Fund Summary – Portfolio Management" in the prospectus:**

Jeffrey Burger, CFA and Gregory J. Conant are the fund's primary portfolio managers, positions they have held since May 2014 and February 2026, respectively. Mr. Burger is a senior portfolio manager for tax-sensitive strategies at INA. Mr. Conant is a senior portfolio manager at INA.

\*\*\*\*\*\*\*\*\*

**The following information supersedes and replaces the information in the second paragraph in the section "Fund Details – Management – Sub-Adviser" in the prospectus:**

Jeffrey Burger, CFA and Gregory J. Conant are the fund's primary portfolio managers, positions they have held since May 2014 and February 2026, respectively. Messrs. Burger and Conant are jointly and primarily responsible for managing the fund's portfolio. Mr. Burger is a senior portfolio manager for tax-sensitive strategies at INA. He has been employed by INA or a predecessor company of INA since July 2009. Mr. Conant is a senior portfolio manager at INA. He has been employed by INA or an affiliate of INA since 1998.

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