UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 24F-2
Annual Notice of Securities Sold
Pursuant to Rule 24f-2
1. Name and address of issuer:
Mason Street Funds, Inc.
720 East Wisconsin Avenue
Milwaukee, Wisconsin 53202
2. Name of each series or class of funds for which this Form is
filed. (If the Form is being filed for all series and
classes of funds of the issuer, check the box but do not
list series or classes): X
3. Investment Company Act File Number: 811-07961
Securities Act File Number: 333-17361
4(a). Last day of fiscal year for which this Form is
filed: March 31, 2000
4(b). Check box if this Form is being filed late (i.e.,
more than 90 calendar days after the end of the
issuer's fiscal year).
4(c). Check box if this is the last time the issuer
will be filing this Form.
5. Calculation of registration fee:
(i) Aggregate sale price of securities
sold during the fiscal year pursuant
to section 24(f): $136,247,098
(ii) Aggregate price of securities redeemed
or repurchased during the fiscal year: $57,403,803
(iii) Aggregate price of securities redeemed
or repurchased during any prior fiscal
year ending no earlier than October 11,
1995 that were not previously used to
reduce registration fees payable to the
Commission: $ 0
(iv) Total available redemption credits
[add items 5(ii) and 5(iii)]: $57,403,803
(v) Net sales - if item 5(i) is greater
than 5(iv) [subtract item 5(iv) from
item 5(i)]: $78,843,295
(vi) Redemption credits available for use
in future years - if item 5(i) is less
than item 5(iv) [subtract item 5(iv) from
item 5(i)]: $--
(vii) Multiplierfor determining registration
fee: x .000264
(viii) Registration fee due [multiply item 5(v)
by item 5(vii)] (enter "0" if no fee is due): =$20,814.63
6. Prepaid Shares
If the response to item 5(i) was determined by deducting an
amount of securities that were registered under the
Securities Act of 1933 pursuant to rule 24e-2 as in effect
before October 11, 1997, then report the amount of securities
(number of shares or other units) deducted here: -- . If
there is a number of shares or other units that were
registered pursuant to rule 24e-2 remaining unsold at the end
of the fiscal year for which this form is filed that are
available for use by the issuer in future fiscal years, then
state that number here: --.
7. Interest due -- if this Form is being filed more than 90 days
after the end of the issuer's fiscal year:
+$ - -
8. Total of the amount of the registration fee due plus any
interest due [line 5(viii) plus line 7]:
=$ 20,814.63
9. Date the registration fee and any interest payment was sent
to the Commission's lockbox depository: May 17, 2000.
Method of Delivery:
Wire Transfer
Mail or other means
SIGNATURES
This report has been signed below by the following person on
behalf of the issuer and in the capacity and on the date
indicated.
BARBARA E. COURTNEY
By: Barbara E. Courtney
Controller, Mason Street Funds, Inc.
Date: May 18, 2000
