

Quarter Ended	March 31			June 30			September 30			December 31
2017
Total revenues	$	938,876		$	949,806		$	965,661		$	991,235
Operating income (loss)	147,755			170,194			176,756			154,405
Income (loss) from continuing operations	58,844			83,148			25,382			24,349
Total (loss) income from discontinued operations	(337		)	(2,026		)	(1,058		)	(2,870		)
Net income (loss)	58,507			81,122			24,324			21,479
Net income (loss) attributable to Iron Mountain Incorporated	58,125			78,630			24,345			22,721			(1)
Earnings (losses) per Share-Basic:
Income (loss) per share from continuing operations	0.22			0.31			0.10			0.09
Total (loss) income per share from discontinued operations	—			(0.01		)	—			(0.01		)
Net income (loss) per share attributable to Iron Mountain Incorporated	0.22			0.30			0.09			0.08
Earnings (losses) per Share-Diluted:
Income (loss) per share from continuing operations	0.22			0.30			0.10			0.09
Total (loss) income per share from discontinued operations	—			(0.01		)	—			(0.01		)
Net income (loss) per share attributable to Iron Mountain Incorporated	0.22			0.30			0.09			0.08
2018
Total revenues	$	1,042,458		$	1,060,823		$	1,060,991		$	1,061,489
Operating income (loss)	164,559			203,359			195,746			191,844
Income (loss) from continuing operations	45,614			93,903			78,628			158,831
Total (loss) income from discontinued operations	(462		)	(360		)	(11,605		)	—
Net income (loss)	45,152			93,543			67,023			158,831
Net income (loss) attributable to Iron Mountain Incorporated	44,684			93,401			67,148			158,118			(2)
Earnings (losses) per Share-Basic:
Income (loss) per share from continuing operations	0.16			0.33			0.28			0.55
Total (loss) income per share from discontinued operations	—			—			(0.04		)	—
Net income (loss) per share attributable to Iron Mountain Incorporated	0.16			0.33			0.23			0.55
Earnings (losses) per Share-Diluted:
Income (loss) per share from continuing operations	0.16			0.33			0.27			0.55
Total (loss) income per share from discontinued operations	—			—			(0.04		)	—
Net income (loss) per share attributable to Iron Mountain Incorporated	0.16			0.33			0.23			0.55

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(1) The change in net income (loss) attributable to Iron Mountain Incorporated in the fourth quarter of 2017 compared to the third quarter of 2017 is primarily attributable to increases in operating expenses, primarily associated with increased Significant Acquisition Costs and bad debt expenses, as well as a $3,011 intangible impairment charge recorded during the fourth quarter of 2017. This increase in operating expenses was partially offset by a decrease in debt extinguishment expense in the fourth quarter of 2017 compared to the third quarter of 2017 of approximately $18,200, as well as a decrease in the provision for income taxes recorded in the fourth quarter of 2017 compared to the third quarter of 2017 of approximately $5,800. The decrease in the tax provision is primarily attributable to benefits derived from (i) rate changes as a result of the Tax Reform Legislation, (ii) the release of reserves and benefits recorded as a result of closing tax years; and (iii) the change in our estimated annual effective tax rate, which were partially offset by a provision related to the establishment of a valuation allowance on certain of our foreign net operating losses in Brazil.

(2) The change in net income (loss) attributable to Iron Mountain Incorporated in the fourth quarter of 2018 compared to the third quarter of 2018 is primarily attributable to (i) gains of approximately $54,500 recorded during the fourth quarter of 2018 associated with the sale of land and buildings in the United Kingdom (see Note 2.g.), (ii) a gain on disposal/write-down of property, plant and equipment (excluding real estate) recorded during the fourth quarter of 2018 of approximately $8,800 related to the receipt of insurance proceeds related to the involuntary conversion of certain assets in a facility we own in Argentina (see Note 2.g.), (iii) a decrease in the provision for income taxes recorded in the fourth quarter of 2018 compared to the third quarter of 2018 of approximately $19,900, (iv) an increase in gains on foreign currency transactions in the fourth quarter of 2018 compared to the third quarter of 2018 of approximately $20,000 and (v) a charge of $11,100 recorded during the third quarter of 2018 relating to the resolution of the post-closing adjustments to the Access Contingent Consideration that did not recur during the fourth quarter of 2018.