BLACKROCK SERIES, INC.
BlackRock International Fund
(the “Fund”)
Supplement dated July 19, 2023 to the Summary Prospectuses and the
Prospectuses of the Fund, each dated September 28, 2022, as supplemented to date
Effective August 31, 2023, the following changes are made to the Fund’s Summary Prospectuses and Prospectuses, as applicable:
The section of the Summary Prospectuses entitled “Key Facts About BlackRock International Fund — Portfolio Managers” and the section of the Prospectuses entitled “Fund Overview — Key Facts About BlackRock International Fund — Portfolio Managers” are deleted in their entirety and replaced with the following:
Portfolio Manager
| Name | Portfolio Manager of the Fund Since |
Title | ||
| Gareth Williams, CFA | 2011 | Director of BlackRock, Inc. |
The section of the Prospectuses entitled “Details About the Fund — How the Fund Invests — About the Portfolio Management Team of the Fund” is deleted in its entirety and replaced with the following:
| ABOUT THE PORTFOLIO MANAGER OF THE FUND |
| Gareth Williams, CFA, is the portfolio manager and is primarily responsible for the day-to-day management of the Fund. Please see “Management of the Fund — Portfolio Manager Information” for additional information about the portfolio manager. |
The section of the Prospectuses entitled “Management of the Fund — Portfolio Manager Information” is deleted in its entirety and replaced with the following:
Information regarding the portfolio manager of the Fund is set forth below. Further information regarding the portfolio manager, including other accounts managed, compensation, ownership of Fund shares, and possible conflicts of interest, is available in the SAI.
| Portfolio Manager | Primary Role | Since | Title and Recent Biography | |||
| Gareth Williams, CFA | Primarily responsible for the day-to-day management of the Fund’s portfolio, including setting the Fund’s overall investment strategy and overseeing the management of the Fund. | 2011 | Director of BlackRock, Inc. since 2013; Vice President of BlackRock, Inc. from 2010 to 2012; Associate of BlackRock, Inc. from 2008 to 2009. |
Shareholders should retain this Supplement for future reference.