National Storage Affiliates Trust Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Cover
- Cover Page
Financial Statements
Notes to Financial Statements
Accounting Policies
- SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)
Notes Tables
Notes Details

EQUITY-BASED AWARDS - Performance-Based LTIP Units Activity (Details)

v3.20.4

EQUITY-BASED AWARDS - Performance-Based LTIP Units Activity (Details) - Performance-Based LTIP Units - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Weighted Average Grant-Date Fair Value
Unvested at beginning of year (in dollars per share)	$ 27.71	$ 26.35	$ 27.63
Granted (in dollars per share)	35.67	29.76	24.67
Vested (in dollars per share)	27.63
Forfeited (in dollars per share)	27.53
Unvested at end of year (in dollars per share)	$ 30.69	$ 27.71	$ 26.35
Minimum
Number of LTIP units
Unvested units at beginning of year (in shares)	0	0	0
Granted (in shares)	0	0	0
Vested (in shares)	0
Forfeited (in shares)	0
Unvested units at end of year (in shares)	0	0	0
Target
Number of LTIP units
Unvested units at beginning of year (in shares)	139,535	86,407	40,390
Granted (in shares)	53,835	53,128	46,017
Vested (in shares)	(40,390)
Forfeited (in shares)	(18,493)
Unvested units at end of year (in shares)	134,487	139,535	86,407
Maximum
Number of LTIP units
Unvested units at beginning of year (in shares)	266,151	159,899	90,874
Granted (in shares)	107,667	106,252	69,025
Vested (in shares)	(90,874)
Forfeited (in shares)	(32,930)
Unvested units at end of year (in shares)	250,014	266,151	159,899

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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