On March 13, 2019, the Company and its PoNY subsidiary completed the private placement of Senior Notes, Series A in an aggregate principal amount of $400.0 million due on March 13, 2026, and Senior Notes, Series B in an aggregate principal amount of $400.0 million due on March 13, 2029 (collectively the “Notes”), pursuant to its Note Purchase and Guarantee Agreement (the “Agreement”) among the Company, PoNY, and the respective purchasers. Proceeds from the Notes were used to pay off $800.0 million in short-term borrowings under the Company’s JPM credit facilities used to temporarily finance the acquisition of Oasis.

Long-term debt, at amortized cost, consisted of the following:

Certain information related to the Senior Notes are as follows:

The effective interest rates for each note series include the interest on the note and amortization of debt issuance costs.

Payment of all amounts due with respect to the Notes and performance under the Agreement is guaranteed by the Company, PoNY and certain other subsidiaries of the Company. The Company may, at its option, prepay at any time all, or any part of, the Notes, subject to certain conditions as described in the Agreement.