13G Filing: Huber Capital Management and Teekay Tankers Ltd (TNK)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

Teekay Tankers Ltd.

(Name of Issuer)

Class A Common Stock

(Title of Class of Securities)

Y8565N102

(CUSIP
Number)

November 29, 2017

(Date of Event Which Requires Filing of
this Statement)

Check the appropriate box to designate
the rule pursuant to which this Schedule is filed:

x   Rule 13d-1(b)

¨   Rule 13d-1(c)

¨   Rule 13d-1(d)

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).

Persons who respond to the collection of
information contained in this form are not required to respond unless the form displays a currently valid OMB control number.