UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K/A

Amendment No. 1

CURRENT REPORT

Pursuant to Section 13 or 15(d) of

the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): September 14, 2018

NORTHERN OIL AND GAS, INC.

(Exact name of Registrant as specified in its charter)

Registrant’s telephone number, including area code (952) 476-9800

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17CFR §240.12b-2).

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 13(a) of the Exchange Act.  ☐

EXPLANATORY NOTE

On September 17, 2018, Northern Oil and Gas, Inc. (the “Company”) completed the acquisition of certain oil and gas properties and interests from Pivotal Williston Basin, LP and Pivotal Williston Basin II, LP (together, the “Pivotal Entities”), effective as of June 1, 2018 (together, the “Pivotal Acquisitions”).

This Amendment No. 1 on Form 8-K/A is being filed by the Company to amend its current report on Form 8-K filed with the Securities and Exchange Commission (“SEC”) on September 18, 2018 (the “Original Report”), solely to provide the disclosures required by Item 9.01 of Form 8-K that were omitted from the Original Report, including the required financial statements of the Pivotal Entities and the required pro forma financial information. Except as otherwise provided herein, the disclosures made in the Original Report remain unchanged.

(a)    Financial Statements of Businesses Acquired.

The statements of revenues and direct operating expenses of the Pivotal Entities for the year ended December 31, 2017 and six months ended June 30, 2018 and 2017 are filed as Exhibit 99.5 hereto and incorporated herein by reference.

(b)    Pro Forma Financial Information.

The unaudited pro forma financial statements of the Company for the year ended December 31, 2017, and as of and for the six months ended June 30, 2018, are furnished as Exhibit 99.6 hereto and incorporated herein by reference. The unaudited pro forma financial statements furnished herewith give effect to both (i) the Pivotal Acquisitions and (ii) the W Energy Acquisition (as defined below).

The “W Energy Acquisition” closed on October 1, 2018, and is described in the Company’s current report on Form 8-K filed with the SEC on October 1, 2018 (the “Original W Energy Report”), as amended by Amendment No. 1 on Form 8-K/A filed with the SEC on the same date that this report is being filed.

(d)    Exhibits.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.