# EDGAR Filing Document

**Accession Number:** 0001533490
**File Stem:** 0001741773-23-000349
**Filing Date:** 2023-2
**Character Count:** 2700
**Document Hash:** 05efe088545e19df047718d14b8d0f51
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001741773-23-000349.hdr.sgml**: 20230227

**ACCESSION NUMBER**: 0001741773-23-000349

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230227

**DATE AS OF CHANGE**: 20230227

**EFFECTIVENESS DATE**: 20230227

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** T. Rowe Price Multi-Sector Account Portfolios, Inc.
- **CENTRAL INDEX KEY:** 0001533490
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 0212

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-178660
- **FILM NUMBER:** 23670091

**BUSINESS ADDRESS:**
- **STREET 1:** 100 EAST PRATT STREET
- **CITY:** BALTIMORE
- **STATE:** MD
- **ZIP:** 21202
- **BUSINESS PHONE:** 410-345-4981

**MAIL ADDRESS:**
- **STREET 1:** 100 EAST PRATT STREET
- **CITY:** BALTIMORE
- **STATE:** MD
- **ZIP:** 21202

## Series and Classes Contracts Data

### T. Rowe Price Mortgage-Backed Securities Multi-Sector Account Portfolio (Series ID: S000036341)

---

|  |  |
|:---|:---|
| Class Name                                                              | Class ID   |
| T. Rowe Price Mortgage-Backed Securities Multi-Sector Account Portfolio | C000111140 |

---

## Series and Classes Contracts Data

### T. Rowe Price Mortgage-Backed Securities Multi-Sector Account Portfolio (Series ID: S000036341)

| Class ID   | Class Name                                                              | Ticker Symbol   |
|:---|:---|:---|
| C000111140 | T. Rowe Price Mortgage-Backed Securities Multi-Sector Account Portfolio |  |

T. Rowe Price Mortgage-Backed Securities Multi-Sector Account Portfolio

**Supplement to Prospectus dated July 1, 2022**

In Section 1 of the Prospectus, the portfolio manager table under "Management" is supplemented as follows:

Effective February 28, 2023, Ramon de Castro will replace Keir R. Joyce as the fund's portfolio manager and chair of the fund's Investment Advisory Committee. Mr. de Castro joined T. Rowe Price in 2012.

In Section 2 of the Prospectus, the disclosure under "Portfolio Management" is supplemented as follows:

Effective February 28, 2023, Ramon de Castro will replace Keir R. Joyce as the fund's portfolio manager and chair of the fund's Investment Advisory Committee. Mr. de Castro joined the Firm in 2012, and his investment experience dates from 1994. During the past five years, he has served as a credit analyst in the Firm's Fixed Income Division and team leader for the Securitized Products group and, beginning in 2021, as a sector portfolio manager.

**The date of this supplement is February 27, 2023.**

#### &nbsp;&nbsp;&nbsp;&nbsp; 2/27/23

------