# EDGAR Filing Document

**Accession Number:** 0000883618
**File Stem:** 9999999995-25-002735
**Filing Date:** 2025-8
**Character Count:** 1164
**Document Hash:** 3e09a7764f9553258fb6a24646613a4f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**9999999995-25-002735.hdr.sgml**: 20250826

**ACCESSION NUMBER**: 9999999995-25-002735

**CONFORMED SUBMISSION TYPE**: EFFECT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250825

**DATE AS OF CHANGE**: 20250826

**EFFECTIVENESS DATE**: 20250825

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NUVEEN SELECT TAX FREE INCOME PORTFOLIO
- **CENTRAL INDEX KEY:** 0000883618

**ORGANIZATION NAME:**
- **EIN:** 363806843
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** EFFECT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-288619
- **FILM NUMBER:** 251252529

**BUSINESS ADDRESS:**
- **STREET 1:** 333 W WACKER DR
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606
- **BUSINESS PHONE:** 3129178200

**MAIL ADDRESS:**
- **STREET 1:** 333 W WACKER DR
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606

### UNITED STATES
### SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## Notice of Effectiveness

**Date:** August 25, 2025

**Time:** 13:00:00

**Form Type:** N-14 8C

---

**CIK:** 0000883618

**Company Name:** NUVEEN SELECT TAX FREE INCOME PORTFOLIO

**File Number:** 333-288619