# EDGAR Filing Document

**Accession Number:** 0001440479
**File Stem:** 0001214659-26-002894
**Filing Date:** 2026-3
**Character Count:** 2451
**Document Hash:** ee9abde699eaf7356e706b2da79c0c29
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001214659-26-002894.hdr.sgml**: 20260305

**ACCESSION NUMBER**: 0001214659-26-002894

**CONFORMED SUBMISSION TYPE**: X-17A-5

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260305

**DATE AS OF CHANGE**: 20260305

**EFFECTIVENESS DATE**: 20260305

**PERIOD START**: 20250101

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MAINLINE WEST MUNICIPAL SECURITIES LLC
- **CENTRAL INDEX KEY:** 0001440479

**ORGANIZATION NAME:**
- **EIN:** 262029237
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** X-17A-5
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 008-67952
- **FILM NUMBER:** 26727927

**BUSINESS ADDRESS:**
- **STREET 1:** 2237 W. 30TH AVENUE
- **STREET 2:** SUITE 1500
- **CITY:** DENVER
- **STATE:** CO
- **ZIP:** 80211
- **BUSINESS PHONE:** 720 536-3380

**MAIL ADDRESS:**
- **STREET 1:** 2237 W. 30TH AVENUE
- **STREET 2:** SUITE 1500
- **CITY:** DENVER
- **STATE:** CO
- **ZIP:** 80211

### Attached PDF Documents

**Attachment 1:** `mainlinewest_public.pdf`

_No text found in this document._

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

## FORM X-17A-5

### ANNUAL AUDITED REPORT

### Filer Information

**Filer CIK:** 0001440479

**Filer CCC:** XXXXXXXX

**Is this a LIVE or TEST filing?:** LIVE

**Would you like a Return Copy?:** No

### Submission Information

**Report Period Begin Date:** 01-01-2025

**Report Period End Date:** 12-31-2025

**Type of Registrant:** Broker-dealer

**Any material weaknesses identified?:** No

### Registrant Identification

**Name of Broker-Dealer:** MAINLINE WEST MUNICIPAL SECURITIES LLC

**Business Address:** 2237 W. 30TH AVENUE, SUITE 1500, DENVER, CO, 80211

**Contact Person:** Anthony Caselli

**Contact Phone:** 720-536-3396

### Independent Public Accountant Identification

**Accountant Name:** Spicer Jeffries LLP

**Accountant Address:** 4601 DTC Blvd, Suite 700, Denver, CO, 80237

**Accountant Type:** Certified Public Accountant

### OATH OR AFFIRMATION

I, **Anthony Caselli**, swear (or affirm) that, to the best of my knowledge and belief, the accompanying financial statements and supporting schedules pertaining to the firm of **Mainline West Municipal Securities LLC**, as of **12-31-2025**, are true and correct.

**Signature:** /s/ Anthony Caselli

**Title:** Chief Financial Officer

**Notarized:** Yes