UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

(Amendment No. 16)*

Under the Securities Exchange Act of 1934

Navios Maritime Acquisition Corporation

(Name of Issuer)

Common Stock, par value $0.0001

(Title of Class of Securities)

Y62159143

(CUSIP Number)

Attn: Vasiliki Papaefthymiou

7 Avenue de Grande Bretagne, Office 11B2

Monte Carlo, MC 98000 Monaco

Tel. No. + 37797982140

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

August 30, 2019

(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.  ☒

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No. Y62159143

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CUSIP No. Y62159143

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Explanatory Note

Except as specifically amended and supplemented by this Amendment No. 16 (“Amendment No. 16”), and by Amendment No. 1 filed on April 26, 2010, Amendment No. 2 filed on April 29, 2010, Amendment No. 3 filed on April 30, 2010, Amendment No. 4 filed on May 5, 2010, Amendment No. 5 filed on May 26, 2010, Amendment No. 6 filed on August 6, 2010, Amendment No. 7 filed on September 15, 2010, Amendment No. 8 filed on July 20, 2011, Amendment No. 9 filed on March 27, 2013, Amendment No.10 filed on March 30, 2015, Amendment No. 11 filed on September 27, 2016, Amendment No. 12 filed on November 21, 2017, Amendment No. 13 filed on December 13, 2018, Amendment No. 14 filed on March 8, 2019 and Amendment No. 15 filed on May 24, 2019, all other provisions of the Schedule 13D filed by Navios Holdings, Amadeus Maritime S.A. and Ms. Angeliki Frangou on April 8, 2010 (the “Original Schedule 13D”) remain in full force and effect. The Original Schedule 13D, together with each of the Amendments thereto, is referred to herein as the “Schedule 13D.” Capitalized terms used herein and not otherwise defined shall have the same meanings ascribed to them in the Original Schedule 13D.

Item 4 to the Schedule 13D is hereby supplemented to include the following:

Pledge of Common Units

On August 30, 2019, Navios Holdings entered into a Purchase Agreement (the “Purchase Agreement”) with N Shipmanagement Acquisition Corp., Alegria Shiptrade Co., and Olympos Maritime Ltd (collectively, “NSAC”) , pursuant to which NSAC acquired certain direct and indirect subsidiaries of Navios Holdings. In connection with the transactions contemplated by the Purchase Agreement, Navios Holdings and Navios Shipmanagement Holdings Corporation (“Shipmanagement Holdings”) entered into a secured loan agreement (the “Loan Agreement”) whereby Navios Holdings agreed to repay Shipmanagement Holdings $125.0 million (the “Loan Amount”) over a term of five years, which Loan Amount generally reflects the net amount of liabilities of Navios Holdings to the entities acquired by NSAC. The Loan Amount is subject to a post-closing adjustment pursuant to the terms of that certain Contribution Agreement, dated as of August 29, 2019, by and among the Issuer, Shipmanagement Holdings, Navios Shipmanagement Inc., Navios Tankers Management Inc., Navios Containers Management Inc., Kleimar LTD, and Navios Corporation Management Inc., pursuant to which Navios Holdings completed an internal reorganization prior to the transactions contemplated by the Purchase Agreement.

In connection with securing the obligations of Navios Holdings under the Loan Agreement, the Reporting Persons granted a first priority pledge of 14,940 shares of Common Stock of the issuer held by Alpha Merit in favor of Shipmanagement Holdings.

This Amendment No. 16 amends and restates Items 5(a) and (b) to the Schedule 13D as set forth below:

Navios Holdings, through its wholly-owned subsidiary, Alpha Merit, beneficially owns 4,865,147 shares (approximately 35.4%) of the Issuer’s Common Stock. The Reporting Persons have sole voting and dispositive power in respect of these shares.

This Amendment No. 16 amends Item 6 to the Schedule 13D by adding the following:

Pursuant to the Loan Agreement, Alpha Merit has pledged and granted a security interest in 14,940 shares of Common Stock to Shipmanagement Holdings.

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Item 7 of Schedule 13D is hereby supplemented to include the following:

Purchase Agreement, dated as of August 30, 2019, by and among N Shipmanagement Acqusition Corp., Alegria Shiptrade Co., Olympos Maritime Ltd, Navios Maritime Holdings Inc. and Navios GP L.L.C. (Incorporated by reference to Exhibit 99.6 to Form 6-K filed by Navios Holdings with the SEC on September 4, 2019).

Secured Loan Agreement, dated as of August 29, 2019, by and between Navios Maritime Holdings Inc. and Navios Shipmanagement Holdings Corporation (Incorporated by reference to Exhibit 99.5 to Form 6-K filed by Navios Holdings with the SEC on September 4, 2019).

Contribution Agreement, dated as of August 29, 2019, by and among Navios Shipmanagement Holdings Corporation, Navios Shipmanagement Inc., Navios Tankers Management Inc., Navios Containers Management Inc., Kleimar LTD, Navios Corporation Management Inc. and Navios Maritime Holdings Inc, (Incorporated by reference to Exhibit 99.4 to Form 6-K filed by Navios Holdings with the SEC on September 4, 2019).

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SIGNATURES

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

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