FILED BY BLACKROCK TCP CAPITAL CORP.

PURSUANT TO RULE 425 UNDER THE SECURITIES ACT OF 1933

AND DEEMED FILED PURSUANT TO RULE 14A-12

UNDER THE SECURITIES EXCHANGE ACT OF 1934

SUBJECT COMPANY: BLACKROCK TCP CAPITAL CORP.

 FILE NO. OF RELATED REGISTRATION STATEMENT: 814-00899

Forward-Looking Statements

Some of the statements in this communication constitute forward-looking statements because they relate to future events, future performance or financial condition of BlackRock Capital Investment Corporation (“BCIC”) or BlackRock TCP Capital Corp. (“TCPC”) or the merger of BCIC with and into a wholly owned, indirect subsidiary of TCPC (the “Merger”). The forward-looking statements may include statements as to: future operating results of BCIC and TCPC and distribution projections; business prospects of BCIC and TCPC and the prospects of their portfolio companies; and the impact of the investments that BCIC and TCPC expect to make. In addition, words such as “anticipate,” “believe,” “expect,” “seek,” “plan,” “should,” “estimate,” “project” and “intend” indicate forward-looking statements, although not all forward-looking statements include these words. The forward-looking statements contained in this communication involve risks and uncertainties. Certain factors could cause actual results and conditions to differ materially from those projected, including the uncertainties associated with (i) the timing or likelihood of the Merger closing; (ii) the expected synergies and savings associated with the Merger; (iii) the ability to realize the anticipated benefits of the Merger, including the expected accretion to net investment income and the elimination or reduction of certain expenses and costs due to the Merger; (iv) the percentage of BCIC and TCPC stockholders voting in favor of the proposals submitted for their approval; (v) the possibility that competing offers or acquisition proposals will be made; (vi) the possibility that any or all of the various conditions to the consummation of the Merger may not be satisfied or waived; (vii) risks related to diverting management’s attention from ongoing business operations; (viii) the risk that stockholder litigation in connection with the Merger may result in significant costs of defense and liability; (ix) changes in the economy, financial markets and political environment, including the impacts of inflation and rising interest rates; (x) risks associated with possible disruption in the operations of BCIC and TCPC or the economy generally due to terrorism, war or other geopolitical conflict (including the current conflict between Russia and Ukraine), natural disasters or public health crises and epidemics; (xi) future changes in laws or regulations (including the interpretation of these laws and regulations by regulatory authorities); (xii) conditions in BCIC’s and TCPC’s operating areas, particularly with respect to business development companies or regulated investment companies; and (xiii) other considerations that may be disclosed from time to time in BCIC’s and TCPC’s publicly disseminated documents and filings, including TCPC’s registration statement on Form N-14, as amended, which includes a proxy statement/prospectus (as amended, the “Registration Statement”), which was declared effective by the Securities Exchange Commission (the “SEC”) on November 16, 2023, TCPC’s prospectus, which was filed by TCPC with the SEC on January 11, 2024 (the “Prospectus”), and BCIC’s definitive proxy statement, which was filed by BCIC with the SEC on January 11, 2024 (the “Proxy Statement”, and, together with the Prospectus, the “Proxy Statement/Prospectus”). BCIC and TCPC have based the forward-looking statements included in this communication on information available to them on the date hereof, and they assume no obligation to update any such forward-looking statements. Although BCIC and TCPC undertake no obligation to revise or update any forward-looking statements, whether as a result of new information, future events or otherwise, you are advised to consult any additional disclosures that they may make directly to you or through reports that BCIC and TCPC in the future may file with the Securities and Exchange Commission (“SEC”), including the annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K.

No Offer or Solicitation

This communication is not, and under no circumstances is it to be construed as, a prospectus or an advertisement and this communication is not, and under no circumstances is it to be construed as, an offer to sell or a solicitation of an offer to purchase any securities in BCIC, TCPC or in any fund or other investment vehicle managed by BlackRock or any of its affiliates.

Additional Information and Where to Find It

This communication relates to the Merger, along with related proposals for which stockholder approval is being sought (collectively, the “Proposals”).  In connection with the Merger, each of BCIC and TCPC have filed certain materials with the SEC, including, among other materials, the Registration Statement and the Proxy Statement/Prospectus. The Registration Statement was declared effective by the SEC on November 16, 2023, and the Proxy Statement/Prospectus was first mailed to TCPC and BCIC stockholders on or around January 15, 2024 to seek approval of the Merger. The Registration Statement and the Proxy Statement/Prospectus each contain important information about BCIC, TCPC, the Merger and related matters. This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended. STOCKHOLDERS OF BCIC AND TCPC ARE URGED TO READ THE PROXY STATEMENT/PROSPECTUS AND REGISTRATION STATEMENT AND OTHER DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THESE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT BCIC, TCPC, THE MERGER AND RELATED MATTERS.

Investors and security holders are able to obtain the documents filed with the SEC free of charge at the SEC’s website, http://www.sec.gov and, for documents filed by BCIC, from BCIC’s website at http://www.blackrockbkcc.com, and, for documents filed by TCPC, from TCPC’s website at http://www.tcpcapital.com.

Participants in the Solicitation

BCIC and TCPC and their respective directors, certain of their respective executive officers and certain other members of management and employees and officers of BlackRock Capital Investment Advisors, LLC and Tennenbaum Capital Partners, LLC, as applicable, and their respective affiliates may be deemed to be participants in the solicitation of proxies from the stockholders of BCIC and TCPC in connection with the Proposals and the Merger. Information about the directors and executive officers of BCIC and TCPC is set forth in the Proxy Statement/Prospectus. Information regarding the persons who may, under the rules of the SEC, be considered participants in the solicitation of the BCIC and TCPC stockholders in connection with the Merger is contained in the Proxy Statement/Prospectus and other relevant materials filed with the SEC. These documents may be obtained free of charge from the sources indicated above.

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