X0306 4 2021-06-28 0 0001616678 BlackRock Science & Technology Trust BST 0001141904 KESTER W CARL 55 EAST 52ND STREET NEW YORK NY 10055 1 0 0 0 Common Stock 2021-06-28 4 X 0 33 A 133 D Transferable Subscription Rights (Right to Buy) 2021-06-28 4 X 0 100 D 2021-06-18 2021-07-14 Common Stock 33 0 D On June 9, 2021, BlackRock Science and Technology Trust (the "Fund") announced the terms of a pro rata offering of transferable rights (the "Rights") to holders of the Fund's common shares, as of the record date of June 18, 2021 ("Record Date Shareholder"), entitling the holders of such rights to subscribe for up to an aggregate of 8,417,857 of the Fund's common shares (the "Rights Offering"). Record Date Shareholders received one Right for each outstanding whole common share held on the record date. The Rights entitle their holders to purchase one new common share for every three Rights held; however, any Record Date Shareholder who owns fewer than three common shares as of the Record Date will be entitled to subscribe for one common share. The estimated subscription price per common share is $56.74. The Rights Offering also includes an oversubscription privilege, which will entitle holders who fully exercise all Rights initially issued to them the right to purchase, at the estimated subscription price of $56.74 per common share, additional common shares of the Fund ("oversubscription shares"), subject to availability and pro rata allocation of oversubscription shares among Record Date Shareholders exercising such oversubscription privilege. The reporting person fully exercised all Rights initially issued to him and his oversubscription privilege, and expects to participate in the Fund's allocation of available oversubscription shares at the close of the subscription period on July 14, 2021. /s/ Janey Ahn as Attorney-in-Fact 2021-07-07