What is the primary purpose of this 8-K filing?

The primary purpose is to inform investors about BlackRock filing a prospectus supplement to register up to 12,035,866 shares of its common stock. These shares are intended for issuance to holders of membership units in its subsidiary, BlackRock Saturn Subco, LLC, as part of the consideration for the HPS Investment Partners acquisition.

How will these new BlackRock shares be issued?

BlackRock expects to elect to perform the redemption obligations directly. This means BlackRock will directly exchange shares of its common stock for the SubCo membership units, a process referred to as a 'Direct Exchange'. The shares are registered under a prospectus supplement to facilitate this process.

Are all the shares mentioned guaranteed to be issued?

No, not all shares are guaranteed. Up to 7,606,927 shares are tied to units issued at the closing of the HPS acquisition. However, up to 4,428,939 shares are linked to 'Deferred Consideration Units' which may be issued in the future and are contingent upon the achievement of certain post-closing conditions and financial performance milestones.

What is the significance of the HPS Investment Partners acquisition mentioned?

The HPS Investment Partners acquisition, which closed on July 1, 2025, is the underlying transaction for which these shares are being registered. A portion of the acquisition consideration involved the issuance of SubCo units that can eventually be redeemed for BlackRock common stock, and the registration of these shares clarifies the process and potential dilution from this acquisition.

BLK 8-K SEC Disclosure — Jun 30, 2026

Summary

BlackRock, Inc. (BLK) has filed an 8-K report on June 30, 2026, to disclose the filing of a prospectus supplement for the potential issuance of up to 12,035,866 shares of its common stock. This issuance is tied to the redemption of Class B-2 membership units in its subsidiary, BlackRock Saturn Subco, LLC ('Subco'). These units were primarily issued as consideration for the acquisition of HPS Investment Partners, with a portion serving as initial closing consideration and another portion as potential deferred consideration contingent on future performance milestones. The filing indicates that BlackRock expects to elect to directly exchange these SubCo units for shares of its common stock, rather than having Subco handle the redemption. This move allows BlackRock to register the shares for future issuance to the holders of these units, providing clarity on the potential dilution and the mechanics of how these shares will be distributed. Investors should note that the issuance of the deferred consideration shares is subject to specific conditions being met. The filing also includes a legal opinion confirming the validity of the shares to be issued.

Key Highlights

1BlackRock filed a prospectus supplement to register up to 12,035,866 shares of common stock.
2These shares are to be issued upon redemption of Class B-2 membership units in subsidiary BlackRock Saturn Subco, LLC.
3The units relate to the acquisition of HPS Investment Partners, including both closing and potential deferred consideration.
4BlackRock intends to effect direct exchanges of common stock for SubCo units.
5The issuance of deferred consideration shares is contingent on post-closing conditions and performance milestones.
6The filing includes a legal opinion on the validity of the registered shares.
7This action clarifies the mechanism for potential future share issuance related to the HPS acquisition.

BlackRock, Inc. 8-K Report, Corporate Update (Jun 30, 2026)

Summary

Key Highlights

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