tat-posam.htm

POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-3 REGISTRATION STATEMENT NO. 333-204376
POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-3 REGISTRATION STATEMENT NO. 333-203696

Texas85-2238435
(State or other jurisdiction(I.R.S. Employer
of incorporation or organization)Identification No.)

Garrett A. DeVriesAkin Gump Strauss Hauer & Feld LLP2300 N. Field Street, Suite 1800Dallas, Texas 75201-2481(214) 969-2891

Approximate date of commencement of proposed sale to the public: Not Applicable.

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Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer ☐	Accelerated filer ☐
Non-accelerated filer ☐	Smaller reporting company ☑

	Emerging Growth Company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

This Post-Effective Amendment No. 1, filed by TAT Merger Sub LLC, a Texas limited liability company (“Registrant”) and successor-in-interest to TransAtlantic Petroleum Ltd. (the “Company”), relates to the Registration Statements on Form S-3 filed by the Company with the Securities and Exchange Commission on April 28, 2015 (No. 333-203696) and May 21, 2015 (No. 333-204376) (collectively, the “Registration Statements”).

On December 18, 2020, pursuant to the Agreement and Plan of Merger, by and among the Company, TAT Holdco LLC, a Texas limited liability company (“Parent”), and the Registrant, a wholly-owned subsidiary of Parent, the Company merged with and into the Registrant (the “Merger”), with the Registrant continuing as the surviving company and as a wholly owned subsidiary of Parent.

As a result of the Merger, the offerings of the Company’s securities pursuant to the above-referenced Registration Statements have been terminated. In accordance with the undertakings made by the Company in the Registration Statements to remove from registration, by means of a post-effective amendment, any of the securities registered under the Registration Statements that remain unissued at the termination of the offerings, the Registrant, as successor-in-interest to the Company, hereby removes from registration the securities registered but unissued under such Registration Statements. The Registration Statements are hereby amended, as appropriate, to reflect the deregistration of such securities.

Pursuant to the requirements of the Securities Act of 1933, as amended, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3 and has duly caused this Post-Effective Amendment No. 1 to the Registration Statements on Form S-3 to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Dallas, Texas, on this 18th day of December, 2020.

TAT MERGER SUB LLC

By: /s/ N. Malone Mitchell 3^rd

N. Malone Mitchell 3rd

Manager of TAT Holdco LLC

Sole Member and Manager of TAT Merger Sub LLC

Pursuant to the requirements of the Securities Act of 1933, as amended, this Post-Effective Amendment No. 1 to the Registration Statements on Form S-3 has been signed by the following persons in the capacities indicated on December 18, 2020,


NAME		TITLE
/s/ N. Malone Mitchell 3^rd		Manager of TAT Holdco LLC Sole Member and Manager of TAT Merger Sub LLC (Principal Executive Officer, Principal Financial Officer and Principal Accounting Officer)
N. Malone Mitchell 3^rd