Company: EOI
Filing Date: 2025-12-03
Form Type: 424B3
Source: 0001133228-25-013125
Chunk: 0

Company: Eaton Vance Enhanced Equity Income Fund
Filing Date: 2025-12-03
Form: 424B3
Chunk 0
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Filed pursuant to Rule 424(b)(3)

File No. 333-284330

<div align='center'>EATON VANCE ENHANCED EQUITY INCOME FUND
Supplement to Prospectus dated January 17, 2025</div>

The following replaces the Financial Highlights contained in the Prospectus:

Selected data for a Common Share outstanding during the periods stated.

|                                                           |     | Year Ended September 30, |    2025 |      |     |   |    2024 |      |     |   |    2023 |      |     |   |    2022 |      |     |   |    2021 |    |
|:----------------------------------------------------------|:----|:-------------------------|--------:|-----:|:----|:--|--------:|:-----|:----|:--|--------:|-----:|:----|:--|--------:|:-----|:----|:--|--------:|---:|
| Net asset value – Beginning of year                       |     | $                        |   20.26 |      |     | $ |   15.82 |      |     | $ |   14.36 |      |     | $ |   18.18 |      |     | $ |   15.68 |    |
| Income (Loss) From Operations                             |     |                          |         |      |     |   |         |      |     |   |         |      |     |   |         |      |     |   |         |    |
| Net investment income (loss)(1)                           |     | $                        |   (0.06 |    ) |     | $ |   (0.02 | )    |     | $ |    0.05 |      |     | $ |    0.07 |      |     | $ |    0.07 |    |
| Net realized and unrealized gain (loss)                   |     |                          |    2.47 |      |     |   |    5.92 |      |     |   |    2.72 |      |     |   |   (2.59 | )    |     |   |    3.55 |    |
| Total income (loss) from operations                       |     | $                        |    2.41 |      |     |   |    5.90 |      |