UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 14A

(RULE 14A-101)

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

(Amendment No.    )

Filed by the Registrant  x                        Filed by a Party other than the Registrant  ¨

Check the appropriate box:

¨ Preliminary Proxy Statement

¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

¨ Definitive Proxy Statement

x Definitive Additional Materials

¨ Soliciting Material Pursuant to Sec. 240.14a-12

TCW FUNDS, INC.

(Name of Registrant as Specified in its Charter)

(Name of Person(s) Filing Proxy Statement, if other than Registrant)

Payment of Filing Fee (Check the appropriate box):

x No fee required.

¨ Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11.

1. Title of each class of securities to which transactions applies:

2. Aggregate number of securities to which transaction applies:

3. Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (Set forth the amount on which the filing fee is calculated and state how it was determined):

4. Proposed maximum aggregate value of transaction:

5. Total fee paid:

¨ Fee paid previously with preliminary materials.

¨ Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identity the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

6. Amount Previously Paid:

7. Form, Schedule or Registration Statement No.:

8. Filing Party:

9. Date Filed:

Due to the expected change in ownership of The TCW Group, shareholders of each TCW mutual Fund should expect to receive proxy voting materials for a special shareholder meeting at which they will be asked to approve a new investment advisory agreement in order for TCW Investment Management Company to continue to serve as investment adviser of the Funds. We urge you to read the proxy statement before making any voting decision because it contains important information. The Board of Directors of the TCW Funds is recommending that shareholders vote FOR the proposal. We ask that you take the time to vote using the card or other voting instructions contained in the proxy material. If you have not received your material, and/or would like to learn more about the proposal, feel free to contact your TCW client service representative. You may obtain a free copy of the proxy statement, without charge, at the Securities and Exchange Commission’s (SEC) Internet site (http://www.sec.gov).