# EDGAR Filing Document

**Accession Number:** 0000081443
**File Stem:** 0000919574-23-001866
**Filing Date:** 2023-2
**Character Count:** 5250
**Document Hash:** fca58613f463f37ee41fedf22024f3e6
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000919574-23-001866.hdr.sgml**: 20230223

**ACCESSION NUMBER**: 0000919574-23-001866

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 14

**FILED AS OF DATE**: 20230223

**DATE AS OF CHANGE**: 20230223

**EFFECTIVENESS DATE**: 20230223

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** AB CAP FUND, INC.
- **CENTRAL INDEX KEY:** 0000081443
- **IRS NUMBER:** 132625045
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0731

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-29901
- **FILM NUMBER:** 23658700

**BUSINESS ADDRESS:**
- **STREET 1:** ALLIANCEBERNSTEIN LP
- **STREET 2:** 1345 AVENUE OF THE AMERICAS
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10105
- **BUSINESS PHONE:** 2129691000

**MAIL ADDRESS:**
- **STREET 1:** ALLIANCEBERNSTEIN LP
- **STREET 2:** 1345 AVENUE OF THE AMERICAS
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10105

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ALLIANCEBERNSTEIN CAP FUND, INC.
- **DATE OF NAME CHANGE:** 20110524

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ALLIANCEBERNSTEIN CAP FUND,INC
- **DATE OF NAME CHANGE:** 20040908

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ALLIANCEBERNSTEIN SMALL CAP GROWTH FUND INC
- **DATE OF NAME CHANGE:** 19931001

## Series and Classes Contracts Data

### AB Sustainable US Thematic Portfolio (Series ID: S000056729)

---

|  |  |  |
|:---|:---|:---|
| Class Name    | Ticker Symbol | Class ID   |
| Advisor Class | FFTYX         | C000180082 |
| Class A       | SUTAX         | C000230111 |
| Class Z       | SUTZX         | C000230112 |
| Class C       | SUTCX         | C000236906 |

---

## Series and Classes Contracts Data

### AB Sustainable US Thematic Portfolio (Series ID: S000056729)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000180082 | Advisor Class | FFTYX           |
| C000230111 | Class A       | SUTAX           |
| C000230112 | Class Z       | SUTZX           |
| C000236906 | Class C       | SUTCX           |

?xml version="1.0" encoding="utf-8"? AB Cap Fund, Inc

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#### SUP-0101-0223
![LOGO](g67z55.jpg)

#### AB CAP FUND, INC.

#### - AB Sustainable US Thematic Portfolio (the "Fund")
Class A (Ticker: SUTAX); Class C (Ticker: SUTCX); Advisor Class (Ticker: FFTYX); Class Z (Ticker: SUTZX)

*Supplement dated February 23, 2023 to the Fund's Prospectus and Summary Prospectus dated October 31, 2022, as amended.* 

\*&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*

*The following replaces the "Performance Table" section under the heading "Bar Chart and Performance Information" in the Prospectus and Summary Prospectus for the Fund.* 

#### Performance Table

#### Average Annual Total Returns
(For the periods ended December 31, 2021)

---

| | | | |
|:---|:---|:---|:---|
|  |  | **1 Year** | **Since<br>Inception** |
| &nbsp;&nbsp;&nbsp; Advisor Class\*,\*\* | Return Before Taxes | 26.26% | 21.98% |
|  | Return After Taxes on Distributions | 22.88% | 21.04% |
|  | Return After Taxes on Distributions and Sale of Fund Shares | 16.62% | 17.67% |
| &nbsp;&nbsp;&nbsp; Class A\*\* | Return Before Taxes | 20.57% | 20.52% |
| &nbsp;&nbsp;&nbsp; Class C\*\* | Return Before Taxes | 24.01% | 20.77% |
| &nbsp;&nbsp;&nbsp; Class Z\*\* | Return Before Taxes | 26.26% | 21.98% |
|  &nbsp;&nbsp;&nbsp;&nbsp;S&P 500 Index<br> &nbsp;&nbsp;&nbsp;&nbsp;(reflects no deduction for fees, expenses, or taxes) | &nbsp;&nbsp;&nbsp;&nbsp;S&P 500 Index<br> &nbsp;&nbsp;&nbsp;&nbsp;(reflects no deduction for fees, expenses, or taxes) | 28.71% | 18.12% |

---

\* After-tax Returns:

– Are an estimate, which is based on the highest historical individual federal marginal income tax rates, and do not reflect the impact of state and local taxes; actual after-tax returns depend on an individual investor's tax situation and are likely to differ from those shown; and

– Are not relevant to investors who hold Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.

\*\* Inception date for Advisor Class shares is June 28, 2017. Inception date for Class A shares and Class Z shares is January 31, 2022. Inception date for Class C shares is April 29, 2022. Performance information for Class A shares, Class C and Class Z shares for periods prior to their inception date is the performance of the Fund's Advisor Class shares adjusted to reflect the expenses of Class A shares, Class C shares and Class Z shares, respectively. 

\*&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*

*This Supplement should be read in conjunction with the Prospectuses for the Fund.* 

*You should retain this Supplement with your Prospectus(es) for future reference.* 

The [A/B] Logo is a service mark of AllianceBernstein and AllianceBernstein<sup>®</sup> is a registered trademark used by permission of the owner, AllianceBernstein L.P.

------

#### SUP-0101-0223