# EDGAR Filing Document

**Accession Number:** 0001497778
**File Stem:** 0001445546-26-001706
**Filing Date:** 2026-3
**Character Count:** 9790
**Document Hash:** 42415ed777c8815550f5ea71c3c8b739
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001445546-26-001706.hdr.sgml**: 20260303

**ACCESSION NUMBER**: 0001445546-26-001706

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 14

**FILED AS OF DATE**: 20260303

**DATE AS OF CHANGE**: 20260302

**EFFECTIVENESS DATE**: 20260303

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** FIRST TRUST SERIES FUND
- **CENTRAL INDEX KEY:** 0001497778

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-168727
- **FILM NUMBER:** 26709952

**BUSINESS ADDRESS:**
- **STREET 1:** 120 EAST LIBERTY DRIVE, SUITE 400
- **CITY:** WHEATON
- **STATE:** IL
- **ZIP:** 60187
- **BUSINESS PHONE:** 630-765-8000

**MAIL ADDRESS:**
- **STREET 1:** 120 EAST LIBERTY DRIVE, SUITE 400
- **CITY:** WHEATON
- **STATE:** IL
- **ZIP:** 60187

## Series and Classes Contracts Data

### First Trust Preferred Securities and Income Fund (Series ID: S000030198)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class A    | FPEAX         | C000092932 |
| Class C    | FPECX         | C000092933 |
| Class F    | FPEFX         | C000092934 |
| Class I    | FPEIX         | C000092935 |
| Class R3   | FPERX         | C000092936 |

---

## Series and Classes Contracts Data

### First Trust Preferred Securities and Income Fund (Series ID: S000030198)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000092932 | Class A      | FPEAX           |
| C000092933 | Class C      | FPECX           |
| C000092934 | Class F      | FPEFX           |
| C000092935 | Class I      | FPEIX           |
| C000092936 | Class R3     | FPERX           |

?xml version='1.0' encoding='ASCII'?

Rule 497(e)

Registration Nos. 333-168727 and 811-22452

First Trust SERIES FUND

(the "*Trust*")

First Trust Preferred Securities and Income Fund

(the *"Fund"*)

Supplement To the Fund's Prospectus

Dated March 2, 2026

Notwithstanding anything to the contrary in the Fund's Prospectus, the "Fees and Expenses of the Fund" section in the Fund's prospectus is replaced in its entirety with the following:

**Fees and Expenses of the Fund**

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. **Investors purchasing shares as "clean shares" may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.** You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the Fund or in other First Trust Advisors L.P. mutual funds. More information about these and other discounts, as well as eligibility requirements for each share class, is available from your financial advisor and in "Share Classes" on page 30 of this prospectus, "Investment in Fund Shares" on page 39 of this prospectus and "Purchase and Redemption of Fund Shares" on page 29 of the Fund's statement of additional information ("SAI").

**Shareholder Fees**

(fees paid directly from your investment)

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | &nbsp;&nbsp;&nbsp;**Class A** | &nbsp;&nbsp;&nbsp;**Class C** | &nbsp;&nbsp;&nbsp;**Class F** | &nbsp;&nbsp;&nbsp;**Class I** | &nbsp;&nbsp;&nbsp;**Class R3** |
| Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) | &nbsp;&nbsp;&nbsp;4.50% |  |  |  |  |
| Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of purchase price or redemption proceeds)(1) |  | &nbsp;&nbsp;&nbsp;1.00% |  |  |  |
| Maximum Sales Charge (Load) Imposed on Reinvested Dividends |  |  |  |  |  |
| Exchange Fee |  |  |  |  |  |

---

**Annual Fund Operating Expenses** 

(expenses that you pay each year as a percentage of the value of your investment)

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | &nbsp;&nbsp;&nbsp;**Class A** | &nbsp;&nbsp;&nbsp;**Class C** | &nbsp;&nbsp;&nbsp;**Class F** | &nbsp;&nbsp;&nbsp;**Class I** | &nbsp;&nbsp;&nbsp;**Class R3** |
| Management Fees | &nbsp;&nbsp;&nbsp;0.80% | &nbsp;&nbsp;&nbsp;0.80% | &nbsp;&nbsp;&nbsp;0.80% | &nbsp;&nbsp;&nbsp;0.80% | &nbsp;&nbsp;&nbsp;0.80% |
| Distribution and Service (12b-1) Fees | &nbsp;&nbsp;&nbsp;0.25% | &nbsp;&nbsp;&nbsp;1.00% | &nbsp;&nbsp;&nbsp;0.15% | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;0.50% |
| Other Expenses | &nbsp;&nbsp;&nbsp;0.37% | &nbsp;&nbsp;&nbsp;0.36% | &nbsp;&nbsp;&nbsp;0.48% | &nbsp;&nbsp;&nbsp;0.26% | &nbsp;&nbsp;&nbsp;3.80% |
| Total Annual Fund Operating Expenses<sup>(2)</sup> | &nbsp;&nbsp;&nbsp;1.42% | &nbsp;&nbsp;&nbsp;2.16% | &nbsp;&nbsp;&nbsp;1.43% | &nbsp;&nbsp;&nbsp;1.06% | &nbsp;&nbsp;&nbsp;5.10% |
| Fee Waiver and Expense Reimbursement<sup>(3)</sup> | &nbsp;&nbsp;&nbsp;0.02% | &nbsp;&nbsp;&nbsp;0.01% | &nbsp;&nbsp;&nbsp;0.13% | &nbsp;&nbsp;&nbsp;0.00% | &nbsp;&nbsp;&nbsp;3.45% |
| Total Annual Fund Operating Expenses After Fee Waivers and Expense Reimbursements | &nbsp;&nbsp;&nbsp;1.40% | &nbsp;&nbsp;&nbsp;2.15% | &nbsp;&nbsp;&nbsp;1.30% | &nbsp;&nbsp;&nbsp;1.06% | &nbsp;&nbsp;&nbsp;1.65% |

---

*(1)* *For Class A shares purchased at net asset value without a sales charge because the purchase amount exceeded $1 million, a contingent deferred sales charge of 1% may be imposed on any redemption within 12 months of purchase. The contingent deferred sales charge on Class C shares applies only to redemptions within 12 months of purchase.* 

*(2)* *Expenses have been restated to reflect the current fiscal year.* 

*(3)* *The Fund's investment advisor and sub-advisor have agreed to waive fees and reimburse expenses through March 1, 2027 so that Total Annual Fund Operating Expenses (excluding taxes, interest, all brokerage commissions, other normal charges incident to the purchase and sale of portfolio securities, distribution and service fees payable pursuant to a Rule 12b-1 plan, if any, and extraordinary expenses) do not exceed 1.15% of the average daily net assets of any class of Fund shares. Total Annual Fund Operating Expenses (excluding taxes, interest, all brokerage commissions, other normal charges incident to the purchase and sale of portfolio securities, distribution and service fees payable pursuant to a Rule 12b-1 plan, if any, and extraordinary expenses) will not exceed 1.50% from March 1, 2027 through February 28, 2036. Fees waived or expenses borne by the Fund's investment advisor and sub-advisor are subject to reimbursement by the Fund for up to three years from the date the fee was waived or expense was incurred, but no reimbursement payment will be made by the Fund at any time if it would result in the Fund's expenses exceeding any of (i) the applicable expense limitation in place for the most recent fiscal year for which such expense limitation was in place, (ii) the applicable expense limitation in place at the time the fees were waived, or (iii) the current expense limitation. Expense limitations may be terminated or modified prior to their expiration only with the approval of the Board of Trustees of the First Trust Series Fund.* 

***Example***

The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then hold or sell all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund's annual operating expenses (excluding taxes, interest, all brokerage commissions, other normal charges incident to the purchase and sale of portfolio securities, distribution and service fees payable pursuant to a Rule 12b-1 plan, if any, and extraordinary expenses) remain at current levels through March 1, 2027 and then will not exceed 1.50% from March 1, 2027 through February 28, 2036. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

---

| | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| &nbsp;&nbsp;**Redemption** | &nbsp;&nbsp;**Redemption** | &nbsp;&nbsp;**Redemption** | &nbsp;&nbsp;**Redemption** | &nbsp;&nbsp;**Redemption** | &nbsp;&nbsp;**Redemption** | &nbsp;&nbsp;**No Redemption** | &nbsp;&nbsp;**No Redemption** | &nbsp;&nbsp;**No Redemption** | &nbsp;&nbsp;**No Redemption** | &nbsp;&nbsp;**No Redemption** | &nbsp;&nbsp;**No Redemption** |
| &nbsp;&nbsp;**Share Class** | &nbsp;&nbsp;**A** | &nbsp;&nbsp;**C** | &nbsp;&nbsp;**F** | &nbsp;&nbsp;**I** | &nbsp;&nbsp;**R3** | &nbsp;&nbsp;**Share Class** | &nbsp;&nbsp;**A** | &nbsp;&nbsp;**C** | &nbsp;&nbsp;**F** | &nbsp;&nbsp;**I** | &nbsp;&nbsp;**R3** |
| &nbsp;&nbsp;1 Year | &nbsp;&nbsp;$586 | &nbsp;&nbsp;$319 | &nbsp;&nbsp;$132 | &nbsp;&nbsp;$108 | &nbsp;&nbsp;$168 | &nbsp;&nbsp;1 Year | &nbsp;&nbsp;$586 | &nbsp;&nbsp;$219 | &nbsp;&nbsp;$132 | &nbsp;&nbsp;$108 | &nbsp;&nbsp;$168 |
| &nbsp;&nbsp;3 Years | &nbsp;&nbsp;873 | &nbsp;&nbsp;676 | &nbsp;&nbsp;440 | &nbsp;&nbsp; 337 | &nbsp;&nbsp;594 | &nbsp;&nbsp;3 Years | &nbsp;&nbsp;873 | &nbsp;&nbsp;676 | &nbsp;&nbsp;440 | &nbsp;&nbsp;337 | &nbsp;&nbsp;594 |
| &nbsp;&nbsp;5 Years | &nbsp;&nbsp;1181 | &nbsp;&nbsp;1159 | &nbsp;&nbsp;769 | &nbsp;&nbsp;585 | &nbsp;&nbsp;1045 | &nbsp;&nbsp;5 Years | &nbsp;&nbsp;1181 | &nbsp;&nbsp;1159 | &nbsp;&nbsp;769 | &nbsp;&nbsp;585 | &nbsp;&nbsp;1045 |
| &nbsp;&nbsp;10 Years | &nbsp;&nbsp;2054 | &nbsp;&nbsp;2493 | &nbsp;&nbsp;1702 | &nbsp;&nbsp;1294 | &nbsp;&nbsp;2299 | &nbsp;&nbsp;10 Years | &nbsp;&nbsp;2054 | &nbsp;&nbsp;2493 | &nbsp;&nbsp;1702 | &nbsp;&nbsp;1294 | &nbsp;&nbsp;2299 |

---

Please Keep this Supplement with your Fund Prospectus for Future Reference