BlackRock Funds III
BlackRock Cash Funds: Institutional
BlackRock Cash Funds: Treasury
(each, a Fund and collectively, the Funds)
Supplement dated March 22, 2023 to the Summary Prospectuses, Prospectuses and Statements of Additional Information of each Fund, each dated April 29, 2022, as supplemented to date
Effective immediately, any references to a Funds P.O. Box are deleted and replaced with:
State Street Bank and Trust Company
Attn: Quincy Nunnally-Transfer Agency
P.O. Box 5493
Boston, Massachusetts 02206
Effective immediately, any references to a Funds overnight mailing address are deleted and replaced with:
State Street Bank and Trust Company
Attn: Quincy Nunnally-Transfer Agency
1776 Heritage Drive
JAB/3
North Quincy, Massachusetts 02171
Shareholders should retain this Supplement for future reference.
PR2SAI-BCF-0323SUP