TAT TransAtlantic Petroleum Ltd New

Stream Oil & Gas Ltd. Stock Option Plan

TransAtlantic Petroleum Ltd. 2019 Long-Term Incentive Plan

(Full title of the plan)

Michael S. Haynes

16803 Dallas Parkway

Addison, Texas 75001

(Name and address of agent for service)

(972) 590-9900

(Telephone number, including area code, of agent for service)

Copies to:

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.

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. ☐

DEREGISTRATION OF SECURITIES

On December 18, 2020, pursuant to the Agreement and Plan of Merger (the “Merger Agreement”), by and among TransAtlantic Petroleum Ltd. (the “Company”), TAT Holdco LLC, a Texas limited liability company (“Parent”), and TAT Merger Sub LLC, a Texas limited liability company and wholly-owned subsidiary of Parent (“Registrant”), 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.

The Company previously registered the Company’s common shares, par value $0.10 per share (“Common Shares”), under registration statements on Form S-8 (each, a “Registration Statement” and, collectively, the “Registration Statements”) concerning Common Shares issuable or issued under each of the TransAtlantic Petroleum Ltd. 2019 Long-Term Incentive Plan, the Stream Oil & Gas Ltd. Stock Option Plan, the TransAtlantic Petroleum Corp. Amended and Restated Stock Option Plan (2006) and the TransAtlantic Petroleum Corp. 2009 Long-Term Incentive Plan (collectively, the “Plans”). This Post-Effective Amendment No. 1 is being filed by the Registrant, as successor-in-interest to the Company, to deregister the remaining unissued Common Shares that were registered for issuance pursuant to the below-referenced Registration Statements in connection with the Plans:

As a result of the Merger, there will be no future offers or sales under the Registration Statements and, pursuant to 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 date hereof, the Registrant, as successor-in-interest to the Company, hereby removes from registration the securities registered but unissued under the Registration Statements. The Registration Statements are hereby amended, as appropriate, to reflect the deregistration of such securities.