# EDGAR Filing Document

**Accession Number:** 0001262943
**File Stem:** 9999999995-26-000877
**Filing Date:** 2026-3
**Character Count:** 2386
**Document Hash:** a1a81c7ec650738168c606a9a9c50f8a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**9999999995-26-000877.hdr.sgml**: 20260320

**ACCESSION NUMBER**: 9999999995-26-000877

**CONFORMED SUBMISSION TYPE**: EFFECT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260319

**DATE AS OF CHANGE**: 20260320

**EFFECTIVENESS DATE**: 20260319

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Boardwalk Pipeline Partners, LP
- **CENTRAL INDEX KEY:** 0001336047
- **STANDARD INDUSTRIAL CLASSIFICATION:** NATURAL GAS TRANSMISSION [4922]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 203265614
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** EFFECT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-294210
- **FILM NUMBER:** 26775981

**BUSINESS ADDRESS:**
- **STREET 1:** 9 GREENWAY PLAZA, SUITE 2800
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77046
- **BUSINESS PHONE:** 866-913-2122

**MAIL ADDRESS:**
- **STREET 1:** 9 GREENWAY PLAZA, SUITE 2800
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77046
**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BOARDWALK PIPELINES LP
- **CENTRAL INDEX KEY:** 0001262943
- **STANDARD INDUSTRIAL CLASSIFICATION:** NATURAL GAS TRANSMISSION [4922]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 061687421
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** EFFECT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-294210-01
- **FILM NUMBER:** 26775982

**BUSINESS ADDRESS:**
- **STREET 1:** 9 GREENWAY PLAZA
- **STREET 2:** SUITE 2800
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77046
- **BUSINESS PHONE:** 866-913-2122

**MAIL ADDRESS:**
- **STREET 1:** 9 GREENWAY PLAZA
- **STREET 2:** SUITE 2800
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77046

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** BOARDWALK PIPELINES LLC
- **DATE OF NAME CHANGE:** 20050216

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** TGT PIPELINE LLC
- **DATE OF NAME CHANGE:** 20030908

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

## Notice of Effectiveness

**Date:** March 19, 2026

**Time:** 16:00:00

**Form Type:** S-3

---

**CIK:** 0001336047

**Company Name:** Boardwalk Pipeline Partners, LP

**File Number:** 333-294210

---

**CIK:** 0001262943

**Company Name:** BOARDWALK PIPELINES LP

**File Number:** 333-294210-01