Approximate Date of Proposed Public Offering:

It is proposed that this filing will become effective (check appropriate box)

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EXPLANATORY NOTE

This Post-Effective Amendment No. 98 under the Securities Act of 1933, as amended (the “Securities Act”) (Amendment No. 99 under the Investment Company Act of 1940, as amended), to the registration statement on Form N-1A (the “Registration Statement”) of AB Variable Products Series Fund, Inc. (the “Registrant”) is being filed pursuant to paragraph (b)(1)(iii) of Rule 485 under the Securities Act solely for the purpose of delaying, until July 31, 2026, the effectiveness of Registrant’s Post-Effective Amendment No. 92 relating solely to the shares of the AB Balanced Hedged Allocation Portfolio (the “Portfolio”), filed on February 12, 2026, pursuant to paragraph (a) of Rule 485 under the Securities Act. 

This Post-Effective Amendment No. 98 incorporates by reference the information contained in Parts A, B and C of Post-Effective Amendment No. 92 to the Registrant’s Registration Statement.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all of the requirements for effectiveness of this Amendment to its Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933 and has duly caused this Amendment to the Registration Statement to be signed on its behalf by the undersigned, duly authorized, in the City of New York and State of New York, on the 30th day of June, 2026.

Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed below by the following persons in the capacities and on the date indicated: