13D Filing: Whitebox Advisors and Par Pacific Holdings Inc. (PARR)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 16)*

PAR PACIFIC HOLDINGS, INC.

(Name of Issuer)

Common stock, $0.01 par value

(Title of Class of Securities)

69888T207

(CUSIP Number)

Mark Strefling

Whitebox Advisors LLC

3033 Excelsior Boulevard

Suite 300

Minneapolis, MN 55416

(612) 253-6001

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

December 13, 2017

(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 which is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e),
13d-1(f) or 13d-1(g), check the following box  ☐.

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent.

*	The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on 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).