UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 12b-25

NOTIFICATION OF LATE FILING

SEC File Number: 001-39961
CUSIP Number: G1261Q123

NOTIFICATION OF LATE FILING

Nothing in this form shall be construed to imply that the Commission has verified any information contained herein.

If the notification relates to a portion of the filing checked above, identify the item(s) to which the notification relates:

PART II — RULES 12b-25(b) AND (c)

If the subject report could not be filed without unreasonable effort or expense and the registrant seeks relief pursuant to Rule 12b-25(b), the following should be completed. (Check box if appropriate)

PART III — NARRATIVE

State below in reasonable detail the reasons why Forms 10-K, 20-F, 11-K, 10-Q, 10-D, N-SAR, N-CSR, or the transition report or portion thereof, could not be filed within the prescribed time period.

BlueRiver Acquisition Corp. (the “Company”) has determined that it is unable, without unreasonable effort or expense, to file its Quarterly Report on Form 10-Q for the fiscal quarter ended March 31, 2021 (the “Q1 2021 Form 10-Q”) by the prescribed due date for the reasons described below.

On April 12, 2021, the Staff of the U.S. Securities and Exchange Commission (the “SEC”) issued the “Staff Statement on Accounting and Reporting Considerations for Warrants Issued by Special Purpose Acquisition Companies (“SPACs”)” (the “SEC Statement”), which clarified guidance for all SPAC-related companies regarding the accounting and reporting for their warrants. Following review of the SEC Statement, the Company reevaluated the accounting treatment of its public and private placement warrants as equity, and concluded that, based on the SEC Statement, public and private placement warrants should be, and should previously have been, classified as a liability measured at fair value, with non-cash fair value adjustments recorded in earnings at each reporting period.

The Company is currently determining the extent of the SEC Statement’s impact on its financial statements, including the financial statements as of and for the fiscal quarter ended March 31, 2021 included in the Q1 2021 Form 10-Q (the “Q1 2021 Financials”). The Company is in the process of revising its previously filed financial statements as of and for the period ended February 2, 2021, filed as Exhibit 99.1 to the Company’s Current Report on Form 8-K on February 8, 2021. The Company is evaluating the impact of this revision on its internal control over financial reporting related to accounting for its public and private placement warrants.

The Company is working diligently to complete the Q1 2021 Form 10-Q as soon as possible; however, given the scope of the process for determining the appropriate treatment of its public and private placement warrants in accordance with the SEC Statement, the Company is unable to complete and file the Q1 2021 Form 10-Q by the required due date of May 17, 2021 without unreasonable effort and expense. The Company does, however, expect to file such report within five calendar days thereof.

PART IV — OTHER INFORMATION

If so, attach an explanation of the anticipated change, both narratively and quantitatively, and, if appropriate, state the reasons why a reasonable estimate of the results cannot be made.

Disclosure About on Forward-Looking Statements

Certain statements included in this Current Report on Form 12b-25, which are not historical facts, are forward-looking statements. Such forward-looking statements speak only as of the date of this Current Report. These forward-looking statements can be identified by the use of forward-looking terminology, including the words “expects,” “may,” “will,” “projects,” or “should,” or, in each case, their negative or other variations or comparable terminology. There can be no assurance that actual results will not materially differ from expectations. Such statements include, but are not limited to, any statements relating to our ability to consummate any acquisition or other business combination and any other statements that are not statements of current or historical facts. These statements are based on management’s current expectations, but actual results may differ materially due to various factors, including, but not limited to, a variety of risk factors affecting the Company’s business and prospects disclosed in the Company’s annual, quarterly reports and subsequent reports filed with the SEC, as amended from time to time. The forward-looking statements contained in this Current Report are based on our current expectations and beliefs concerning future developments and their potential effects on us. Future developments affecting us may not be those that we have anticipated. These forward-looking statements involve a number of risks, uncertainties (some of which are beyond our control) and other assumptions that may cause actual results or performance to be materially different from those expressed or implied by these forward-looking statements. These risks and uncertainties include, but are not limited to, those factors described under the heading “Risk Factors” in the Company’s annual, quarterly reports and subsequent reports filed with the SEC, as amended from time to time. Should one or more of these risks or uncertainties materialize, or should any of our assumptions prove incorrect, actual results may vary in material respects from those projected in these forward-looking statements. We undertake no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as may be required under applicable securities laws. These risks and others described under “Risk Factors” in the Company’s annual, quarterly reports and subsequent reports filed with the SEC, as amended from time to time may not be exhaustive.

BlueRiver Acquisition Corp.

has caused this notification to be signed on its behalf by the undersigned hereunto duly authorized.