TESO Tesco Corp. (MM)

*SEE INSTRUCTIONS BEFORE FILLING OUT.

*SEE INSTRUCTIONS BEFORE FILLING OUT.

*SEE INSTRUCTIONS BEFORE FILLING OUT.

*SEE INSTRUCTIONS BEFORE FILLING OUT.

*SEE INSTRUCTIONS BEFORE FILLING OUT.

*SEE INSTRUCTIONS BEFORE FILLING OUT.

*SEE INSTRUCTIONS BEFORE FILLING OUT.

*SEE INSTRUCTIONS BEFORE FILLING OUT.

*SEE INSTRUCTIONS BEFORE FILLING OUT.

*SEE INSTRUCTIONS BEFORE FILLING OUT.

*SEE INSTRUCTIONS BEFORE FILLING OUT.

Item 1 (a) Name of Issuer :

Tesco Corporation (the “Company”)

(b) Address of Issuer’s Principal Executive Offices :

11330 Clay Road, Suite 350

Houston, TX 77041

United States

Item 2 (a) – (c) This statement is filed on behalf of the following:

(1) Atlas Master Fund, Ltd. is a Cayman corporation (“AMF”), with its principal business office at c/o Maples Corporate Services Limited, P.O. Box 309, Ugland House, George Town, Grand Cayman KY1-1104, Cayman Islands, British West Indies.

(2) Atlas Global, LLC is a Delaware limited liability company (“AG”), with its principal business office at 444 West Lake Street, 50th Floor, Chicago, IL 60606. AG owns 16.54% of the equity interests in AMF.

(3) Atlas Global Investments, Ltd. is a Cayman corporation (“AGI”), with its principal business office at c/o Maples Corporate Services Limited, P.O. Box 309, Ugland House, George Town, Grand Cayman KY1-1104, Cayman Islands, British West Indies. AGI owns 43.22% of the equity interests in AMF.

(4) Atlas Institutional Fund, LLC is a Delaware limited liability company (“AIF LLC”), with its principal business office at 444 West Lake Street, 50th Floor, Chicago, IL 60606. AIF LLC owns 7.66% of the equity interests in AMF.

(5) Atlas Institutional Fund, Ltd. is a Cayman corporation (“AIF LTD”), with its principal business office at c/o Maples Corporate Services Limited, P.O. Box 309, Ugland House, George Town, Grand Cayman KY1-1104, Cayman Islands, British West Indies. AIF, LTD owns 20.73% of the equity interests in AMF.

(6) Atlas Global Japan Unit Trust is a Cayman exempted unit trust (“AGJ”), with its principal business office at c/o CIBC Bank and Trust Company (Cayman) Limited, CIBC Financial Centre, 11 Dr. Roy’s Drive-3 ^rd Floor, P.O. Box 694, Grand Cayman, Cayman Islands, British West Indies. AGJ owns 11.83% of the equity interests in AMF.

(7) Atlas Enhanced Master Fund, Ltd. is a Cayman corporation (“AEMF”), with its principal business office at c/o Maples Corporate Services Limited, P.O. Box 309, Ugland House, George Town, Grand Cayman KY1-1104, Cayman Islands, British West Indies.

Page 13 of 24 Pages

(8) Atlas Enhanced Fund, L.P. is a Delaware limited partnership (“AEF LP”), with its principal business office at 444 West Lake Street, 50th Floor, Chicago, IL 60606. AEF LP owns 32.39% of the equity interests in AEMF.

(9) Atlas Enhanced Fund, Ltd. is a Cayman corporation (“AEF LTD”), with its principal business office at c/o Maples Corporate Services Limited, P.O. Box 309, Ugland House, George Town, Grand Cayman KY1-1104, Cayman Islands, British West Indies. AEF LTD owns 67.61% of the equity interests in AEMF.

(10) Balyasny Asset Management L.P. is a Delaware limited partnership (“BAM”), with its principal business office at 444 West Lake Street, 50th Floor, Chicago, IL 60606. BAM is the investment manager to each of AMF, AG, AGI, AIF LLC, AIF LTD, AGJ, AEMF, AEF LP and AEF LTD.

(11) Dmitry Balyasny, a United States citizen whose business address is 444 West Lake Street, 50th Floor, Chicago, IL 60606. Dmitry Balyasny is the sole managing member of the general partner of BAM.

(d) Title of Class  of Securities :

Common Stock

(e) CUSIP Number : 88157K101

Item 3 If this statement is filed pursuant to Rule 13d-1(b), or 13d-2(b) or (c), check whether the person filing is a :

Not Applicable

Item 4 Ownership:

AMF

(a) Amount Beneficially Owned :

None

Page 14 of 24 Pages

(b) Percent of Class :

0.00%

(c) Number of Shares as to which person has :

(i) Sole power to vote or to direct vote:

None

(ii) Shared power to vote or to direct vote:

None

(iii) Sole power to dispose or direct disposition of:

None

(iv) Shared power to dispose or to direct disposition of:

None

AG

(a) Amount Beneficially Owned :

None

(b) Percent of Class :

0.00%

(c) Number of Shares as to which person has :

(i) Sole power to vote or to direct vote:

None

(ii) Shared power to vote or to direct vote:

None

(iii) Sole power to dispose or direct disposition of:

None

Page 15 of 24 Pages

(iv) Shared power to dispose or to direct disposition of:

None

AGI

(a) Amount Beneficially Owned :

None

(b) Percent of Class :

0.00%

(c) Number of Shares as to which person has :

(i) Sole power to vote or to direct vote:

None

(ii) Shared power to vote or to direct vote:

None

(ii) Sole power to dispose or direct disposition of:

None

(iv) Shared power to dispose or to direct disposition of:

None

AIF LLC

(a) Amount Beneficially Owned :

None

(b) Percent of Class :

0.00%

(c) Number of Shares as to which person has :

(i) Sole power to vote or to direct vote:

Page 16 of 24 Pages

None

(ii) Shared power to vote or to direct vote:

None

(iii) Sole power to dispose or direct disposition of:

None

(iv) Shared power to dispose or to direct disposition of:

None

AIF LTD

(a) Amount Beneficially Owned :

None

(b) Percent of Class :

0.00%

(c) Number of Shares as to which person has :

(i) Sole power to vote or to direct vote:

None

(ii) Shared power to vote or to direct vote:

None

(iii) Sole power to dispose or direct disposition of:

None

(iv) Shared power to dispose or to direct disposition of:

None

Page 17 of 24 Pages

AGJ

(a) Amount Beneficially Owned :

None

(b) Percent of Class :

0.00%

(c) Number of Shares as to which person has :

(i) Sole power to vote or to direct vote:

None

(ii) Shared power to vote or to direct vote:

None

(iii) Sole power to dispose or direct disposition of:

None

(iv) Shared power to dispose or to direct disposition of:

None

AEMF

(a) Amount Beneficially Owned :

None

(b) Percent of Class :

0.00%

(c) Number of Shares as to which person has :

(i) Sole power to vote or to direct vote:

None

(ii) Shared power to vote or to direct vote:

Page 18 of 24 Pages

None

(iii) Sole power to dispose or direct disposition of:

None

(iv) Shared power to dispose or to direct disposition of:

None

AEF LP

(a) Amount Beneficially Owned :

None

(b) Percent of Class :

0.00%

(c) Number of Shares as to which person has :

(i) Sole power to vote or to direct vote:

None

(ii) Shared power to vote or to direct vote:

None

(iii) Sole power to dispose or direct disposition of:

None

(iv) Shared power to dispose or to direct disposition of:

None

Page 19 of 24 Pages

AEF LTD

(a) Amount Beneficially Owned :

None

(b) Percent of Class :

0.00%

(c) Number of Shares as to which person has :

(i) Sole power to vote or to direct vote:

None

(ii) Shared power to vote or to direct vote:

None

(iii) Sole power to dispose or direct disposition of:

None

(iv) Shared power to dispose or to direct disposition of:

None

BAM

(a) Amount Beneficially Owned :

None

(b) Percent of Class :

0.00%

(c) Number of Shares as to which person has :

(i) Sole power to vote or to direct vote:

None

Page 20 of 24 Pages

(ii) Shared power to vote or to direct vote:

None

(iii) Sole power to dispose or direct disposition of:

None

(iv) Shared power to dispose or to direct disposition of:

None

Dmitry Balyasny

(a) Amount Beneficially Owned :

None

(b) Percent of Class :

0.00%

(c) Number of Shares as to which person has :

(i) Sole power to vote or to direct vote:

None

(ii) Shared power to vote or to direct vote:

None

(iii) Sole power to dispose or direct disposition of:

None

(iv) Shared power to dispose or to direct disposition of:

None

Item 5 Ownership of Five Percent or Less of a Class :

Applicable

Page 21 of 24 Pages

Item 6 Ownership of More than Five Percent on Behalf of Another Person :

Not Applicable

Not Applicable

Not Applicable

Item 9 Notice of Dissolution of Group :

Not Applicable

Item 10 Certification :

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

Page 22 of 24 Pages

SIGNATURE

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.

Date: February 14, 2018

Page 23 of 24 Pages

Page 24 of 24 Pages