UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-K/A

Amendment No. 1

For the Year Ended December 31, 2022

Commission File Number: 814-00899

BLACKROCK TCP CAPITAL CORP.

(Exact Name of Registrant as Specified in Charter)

(310) 566-1000

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act: Yes ☒ No ☐

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ☐ No ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months and (2) has been subject to such filing requirements for the past 90 days: Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act. (Check one):

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If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with a new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☒

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).Yes ☐ No ☒

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. Yes ☐ No ☒

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). Yes ☐ No ☒

The aggregate market value of the Registrant’s common stock held by non-affiliates of the Registrant at June 30, 2022 (the last business day of the Registrant’s most recently completed second quarter) was $723.8 million based upon the last sales price reported for such date on The NASDAQ Global Select Market. For purposes of this disclosure, shares of common stock beneficially owned by executive officers and directors of the Registrant and members of their families have been excluded in that such persons may be deemed to be affiliates. This determination of affiliate status is not necessarily conclusive for other purposes. The Registrant has no non-voting common stock.

The number of shares of the Registrant’s common stock, $0.001 par value, outstanding as of February 28, 2023 was 57,767,264.

Documents Incorporated by Reference: Portions of the Registrant’s Proxy Statement relating to the Registrant’s 2022 Annual Meeting of Stockholders to be filed not later than 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K are incorporated by reference into Part III of this Report.

Auditor Firm Id: PCAOB ID 34

Auditor Name: Deloitte & Touche LLP

Auditor Location: 555 West 5th Street Suite 2700, Los Angeles, CA 90013-1010, USA

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EXPLANATORY NOTE

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Part IV

Item 15. Exhibits and Consolidated Financial Statement Schedules

The following reports and consolidated financial statements are set forth in Item 8:

The following exhibits are filed as part of this report or hereby incorporated by reference to exhibits previously filed with the SEC:

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* Filed herewith.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, there unto duly authorized.

BlackRock TCP Capital Corp.

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacity and on the dates indicated.