UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K/A

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(D)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of Report: September 26, 2014

Date of Earliest Event Reported: August 11, 2014

Mid-Con Energy Partners, LP

(Exact name of registrant as specified in its charter)

2501 North Harwood Street, Suite 2410

Dallas, Texas 75201

(Address of principal executive offices)

(972) 479-5980

(Registrant’s telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last report)

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:

On August 11, 2014, Mid-Con Energy Partners, LP (the “Partnership”) filed a Current Report on Form 8-K (the “Initial 8-K”) that disclosed the completion of the Partnership’s and Mid-Con Energy Properties, LLC (“Mid-Con Properties”), its wholly-owned subsidiary, acquisition on August 5, 2014, from Mid-Con Energy III, LLC (“Mid-Con Energy III”), an affiliate of the Partnership, of oil property located in Creek County, Oklahoma (the “Acquired Property”) for a purchase price of approximately $56.5 million, subject to customary post-closing purchase price adjustments (collectively, the “Acquisition”). The effective date of the Acquisition was August 5, 2014. The Partnership and Mid-Con Properties paid the purchase price with (i) approximately $4.5 million in cash, financed through borrowings under the Partnership’s revolving credit facility, and (ii) the issuance of 2,214,659 common units representing limited partner interests in the Partnership (“Common Units”), having an approximate value of $52.0 million. The value of the Common Units issued as partial consideration for the Acquisition was based on the trailing ten day volume weighted average price of the Common Units which approximated the fair value of the units issued as consideration on the closing date of the transaction.

This amendment on Form 8-K/A amends and supplements the Initial 8-K to include financial statements and pro forma financial information as described in Items 9.01(a) and 9.01(b). No other amendments are being made to the Initial 8-K.

(a) Financial Statements of the Businesses Acquired.

The audited statement of revenues and direct operating expenses for the Acquired Property for the year ended December 31, 2013, and the unaudited statements of revenues and direct operating expenses for the Acquired Property for the six months ended June 30, 2014 and 2013, and the related notes thereto, are attached hereto as Exhibit 99.1.

(b) Pro forma financial information.

The unaudited pro forma condensed consolidated balance sheet of the Partnership as of June 30, 2014 and the unaudited pro forma consolidated statements of operations for the six months ended June 30, 2014 and for the year ended December 31, 2013 and the related notes, showing the pro forma effects of the acquisition of the Acquired Property, are attached hereto as Exhibit 99.2

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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.

Dated: September 26, 2014

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EXHIBIT INDEX

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