# EDGAR Filing Document

**Accession Number:** 0001941869
**File Stem:** 0001528621-23-000436
**Filing Date:** 2023-3
**Character Count:** 1438
**Document Hash:** ded47702701e6bb9bc417515b6b55285
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001528621-23-000436.hdr.sgml**: 20230316

**ACCESSION NUMBER**: 0001528621-23-000436

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230316

**DATE AS OF CHANGE**: 20230316

**EFFECTIVENESS DATE**: 20230316

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Invesco Unit Trusts Series 2277
- **CENTRAL INDEX KEY:** 0001941869
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** NY

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-269322
- **FILM NUMBER:** 23739545

**BUSINESS ADDRESS:**
- **STREET 1:** 225 LIBERTY STREET
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10281
- **BUSINESS PHONE:** 2126524344

**MAIL ADDRESS:**
- **STREET 1:** 225 LIBERTY STREET
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10281

NO SERIES-AND-CLASSES-CONTRACTS-DATA BLOCK FOUND

Filed Pursuant to Rule 497(d)

**INVESCO UNIT TRUSTS, SERIES 2277**

The Dow Jones Total Market Portfolio, Enhanced Index Strategy 2023-2

(the "Portfolio")

**Supplement to the Prospectus**

Effective March 13, 2023, trading of stock issued by Signature Bank (ticker: SBNY) has been halted. Accordingly, the Portfolio is not able to purchase additional shares of Signature Bank. To the extent that the Portfolio creates additional Units, such Units will be created without purchasing shares of Signature Bank.

Supplement Dated: March 16, 2023