Annual report pursuant to Section 13 and 15(d)

SHAREHOLDERS' EQUITY AND NONCONTROLLING INTERESTS

v3.10.0.1
SHAREHOLDERS' EQUITY AND NONCONTROLLING INTERESTS
12 Months Ended
Dec. 31, 2018
Equity [Abstract]  
SHAREHOLDERS' EQUITY AND NONCONTROLLING INTERESTS
SHAREHOLDERS' EQUITY AND NONCONTROLLING INTERESTS
Shareholders' Equity
Common Share Offerings
On July 13, 2018, the Company closed a follow-on offering of 5,900,000 of its common shares at an offering price of $29.86 per share. The Company received aggregate net proceeds from the offering of approximately $175.6 million after deducting expenses associated with the offering.
On December 11, 2017, the Company closed a follow-on public offering of 5,750,000 of its common shares, which included 750,000 common shares sold upon the exercise in full by the underwriters of their option to purchase additional common shares, at a public offering price of $25.50 per share. The Company received aggregate net proceeds from the offering of approximately $140.3 million after deducting the underwriting discount and additional expenses associated with the offering. 
On July 6, 2016, the Company closed a follow-on public offering of 12,046,250 of its common shares, which included 1,571,250 common shares sold upon the exercise in full by the underwriters of their option to purchase additional common shares, at a public offering price of $20.75 per share. The Company received aggregate net proceeds from the offering of approximately $237.5 million after deducting the underwriting discount and additional expenses associated with the offering. 
On December 16, 2016, the Company closed a follow-on offering of 5,175,000 of its common shares, which included 675,000 common shares sold upon the exercise in full by the underwriters of their option to purchase additional common shares, at an offering price of $20.48 per share. The Company received aggregate net proceeds from the offering of approximately $105.5 million after deducting the underwriting discount and additional expenses associated with the offering. 
Series A Preferred Share Offering
On October 11, 2017, the Company completed an underwritten public offering of 6,900,000 of its 6.000% Series A Preferred Shares, which included 900,000 Series A Preferred Shares sold upon the exercise in full by the underwriters of their option to purchase additional Series A Preferred Shares, resulting in net proceeds to the Company of approximately $166.6 million, after deducting the underwriting discount and the Company's other offering expenses. Dividends on the Series A Preferred Shares, which are payable quarterly in arrears, are cumulative from the date of original issuance in the amount of $1.50 per share each year. The Series A Preferred Shares rank senior to the Company's common shares with respect to dividend rights and rights upon our liquidation, dissolution or winding up. Generally, the Series A Preferred Shares become redeemable by the Company beginning in October 2022 for a cash redemption price of $25.00 per share, plus accrued but unpaid dividends.
Noncontrolling Interests
All of the OP equity in the Company's operating partnership not held by the Company is reflected as noncontrolling interests. Noncontrolling interests also include ownership interests in DownREIT partnerships held by entities other than the Company's operating partnership. NSA is the general partner of its operating partnership and is authorized to cause its operating partnership to issue additional partner interests, including OP units and subordinated performance units, at such prices and on such other terms as it determines in its sole discretion.
As of December 31, 2018 and 2017, units reflecting noncontrolling interests consisted of the following:
 
December 31,
 
2018
 
2017
Series A-1 preferred units
343,719

 

OP units
28,874,103

 
26,719,607

Subordinated performance units
10,749,475

 
11,604,738

LTIP units
931,671

 
771,396

DownREIT units
 
 
 
DownREIT OP units
1,834,786

 
1,834,786

DownREIT subordinated performance units
4,386,999

 
4,386,999

Total
47,120,753

 
45,317,526

Series A-1 Preferred Units
The 6.000% Series A-1 Cumulative Redeemable Preferred Units ("Series A-1 preferred units") rank senior to OP units and subordinated performance units in the Company's operating partnership with respect to distributions and liquidation. The Series A-1 preferred units have a stated value of $25.00 per unit and receive distributions at an annual rate of 6.000%. These distributions are cumulative. The Series A-1 preferred units are redeemable at the option of the holder after the first anniversary of the date of issuance, which redemption obligations may be satisfied at the Company’s option in cash in an amount equal to the market value of an equivalent number of the Company's 6.000% Series A Preferred Shares or the issuance of 6.000% Series A Preferred Shares on a one-for-one basis, subject to adjustments. The increase in Series A-1 preferred units outstanding from December 31, 2017 to December 31, 2018 was due to the issuance of Series A-1 preferred units in connection with the acquisition of self storage properties.
OP Units and DownREIT OP units
OP units in the Company's operating partnership are redeemable for cash or, at the Company's option, exchangeable for common shares on a one-for-one basis, and DownREIT OP units are redeemable for cash or, at the Company's option, exchangeable for OP units in its operating partnership on a one-for-one basis, subject to certain adjustments in each case. The holders of OP units are generally not entitled to elect redemption until one year after the issuance of the OP units. The holders of DownREIT OP units are generally not entitled to elect redemption until five years after the date of the contributor's initial contribution.
The increase in OP Units outstanding from December 31, 2017 to December 31, 2018 was due to the issuance of 2,024,170 OP units related to the voluntary conversions of 997,074 subordinated performance units (as discussed further below), the issuance of 584,004 OP units in connection with the acquisition of self storage properties and 9,100 LTIP units which were converted into OP units, partially offset by the redemption of 462,778 OP units for common shares.
Subordinated Performance Units and DownREIT Subordinated Performance Units
Subordinated performance units may also, under certain circumstances, be convertible into OP units which are exchangeable for common shares as described above, and DownREIT subordinated performance units may, under certain circumstances, be exchangeable for subordinated performance units on a one-for-one basis. Subordinated performance units are only convertible into OP units after a two year lock-out period and then generally (i) at the holder’s election only upon the achievement of certain performance thresholds relating to the properties to which such subordinated performance units relate or (ii) at the Company's election upon a retirement event of a PRO that holds such subordinated performance units or upon certain qualifying terminations. The holders of DownREIT subordinated performance units are generally not entitled to elect redemption until at least five years after the date of the contributor's initial contribution.
The decrease in subordinated performance units outstanding from December 31, 2017 to December 31, 2018 was due to the voluntary conversion of 997,074 subordinated performance units into 2,024,170 OP units partially offset by the issuance of 141,811 subordinated performance units for co-investment by certain of the Company's PROs in connection with the acquisition of self storage properties.
LTIP Units
LTIP units are a special class of partnership interest in the Company's operating partnership that allow the holder to participate in the ordinary and liquidating distributions received by holders of the OP units (subject to the achievement of specified levels of profitability by the Company's operating partnership or the achievement of certain events). LTIP units may also, under certain circumstances, be convertible into OP units on a one-for-one basis, which are then exchangeable for common shares as described above. LTIP units do not have full parity with OP units with respect to liquidating distributions and may not receive ordinary distributions until such parity is reached pursuant to the terms of the LP Agreement. If such parity is reached under the LP Agreement, upon vesting, vested LTIP units may be converted into an equal number of OP units, and thereafter have all the rights of OP units, including redemption rights. See Note 9 for additional information about the Company's LTIP Units.
The increase in LTIP units outstanding from December 31, 2017 to December 31, 2018 was due to the issuance of compensatory LTIP units to employees, trustees and consultants net of forfeitures partially offset by the conversion of 9,100 LTIP units into OP units.