21. Redeemable Series A Preferred Units

The Partnership has issued non-cumulative, non-voting, non-convertible Series A Preferred Units via private placements to five financial institutions. The Series A Preferred Units have no stated maturity, are not subject to any sinking fund requirements, and will remain outstanding indefinitely unless repurchased or redeemed by the Partnership or holder. Upon the sixth anniversary of the closing of the sale of Series A Preferred Units to a subscriber, and upon each anniversary thereafter, the Partnership and each holder of Series A Preferred Units will have the right to redeem, in whole or in part, the Series A Preferred Units held by such holder at a per unit redemption price equal to $10.00 per unit plus an amount equal to all declared and unpaid distributions.

In the event of any liquidation, dissolution, or winding up of the Partnership, the holders of the Series A Preferred Units are entitled to a liquidation preference in connection with their investments. With respect to anticipated quarterly distributions and rights upon liquidation, dissolution, or the winding-up of the Partnership’s affairs, the Series A Preferred Units will rank senior to the Partnership’s BUCs and to any other class or series of Partnership interests or securities expressly designated as ranking junior to the Series A Preferred Units, and junior to any other class or series of Partnership interests or securities expressly designated as ranking senior to the Series A Preferred Units.

The following table summarizes the Series A Preferred Units outstanding at December 31, 2017:

Month Issued	Units		Purchase Price		Distribution Rate			Redemption Price per Unit		Earliest Redemption Date
Preferred Units at January 1, 2016		-	$	-
March 2016		1,000,000		10,000,000		3.00	%	$	10.00	March 2022
May 2016		1,386,900		13,869,000		3.00	%		10.00	May 2022
September 2016		1,000,000		10,000,000		3.00	%		10.00	September 2022
December 2016		700,000		7,000,000		3.00	%		10.00	December 2022
Preferred Units at December 31, 2016		4,086,900	$	40,869,000
March 2017		1,613,100		16,131,000		3.00	%		10.00	March 2023
August 2017		2,000,000		20,000,000		3.00	%		10.00	August 2023
October 2017		1,750,000		17,500,000		3.00	%		10.00	October 2023
Preferred Units at December 31, 2017		9,450,000	$	94,500,000