Biogen Inc. (BIIB)

Biogen Inc., adjusted current assets

USD $ in thousands

		Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014	Dec 31, 2013
	As Reported
	Current assets
	Adjustments
	Add: Reserves for allowances
	After Adjustment
	Adjusted current assets

Based on: 10-K (filing date: 2018-02-01), 10-K (filing date: 2017-02-02), 10-K (filing date: 2016-02-03), 10-K (filing date: 2015-02-04), 10-K (filing date: 2014-02-06).

Biogen Inc., adjusted total assets

USD $ in thousands

		Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014	Dec 31, 2013
	As Reported
	Total assets
	Adjustments
	Add: Operating leased assets1
	Add: Reserves for allowances
	After Adjustment
	Adjusted total assets

Based on: 10-K (filing date: 2018-02-01), 10-K (filing date: 2017-02-02), 10-K (filing date: 2016-02-03), 10-K (filing date: 2015-02-04), 10-K (filing date: 2014-02-06).

Biogen Inc., adjusted current liabilities

USD $ in thousands

		Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014	Dec 31, 2013
	As Reported
	Current liabilities
	Adjustments
	Less: Current restructuring reserve
	After Adjustment
	Adjusted current liabilities

Based on: 10-K (filing date: 2018-02-01), 10-K (filing date: 2017-02-02), 10-K (filing date: 2016-02-03), 10-K (filing date: 2015-02-04), 10-K (filing date: 2014-02-06).

Biogen Inc., adjusted total liabilities

USD $ in thousands

		Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014	Dec 31, 2013
	As Reported
	Total liabilities
	Adjustments
	Add: Operating lease obligations1
	Less: Deferred tax liability2
	Less: Restructuring reserve
	After Adjustment
	Adjusted total liabilities

Based on: 10-K (filing date: 2018-02-01), 10-K (filing date: 2017-02-02), 10-K (filing date: 2016-02-03), 10-K (filing date: 2015-02-04), 10-K (filing date: 2014-02-06).

Biogen Inc., adjusted total Biogen Inc. shareholders’ equity

USD $ in thousands

		Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014	Dec 31, 2013
	As Reported
	Total Biogen Inc. shareholders’ equity
	Adjustments
	Less: Deferred tax assets and liabilities, net1
	Add: Reserves for allowances
	Add: Restructuring reserve
	Add: Noncontrolling interests
	After Adjustment
	Adjusted total Biogen Inc. shareholders’ equity

Based on: 10-K (filing date: 2018-02-01), 10-K (filing date: 2017-02-02), 10-K (filing date: 2016-02-03), 10-K (filing date: 2015-02-04), 10-K (filing date: 2014-02-06).

Biogen Inc., adjusted capitalization table

USD $ in thousands

		Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014	Dec 31, 2013
	As Reported
	Current portion of notes payable and other financing arrangements
	Notes payable and other financing arrangements, excluding current portion
	Total reported debt
	Total Biogen Inc. shareholders’ equity
	Total reported capital
	Adjustments to Debt
	Add: Operating lease obligations1
	Adjusted total debt
	Adjustments to Equity
	Less: Deferred tax assets and liabilities, net2
	Add: Reserves for allowances
	Add: Restructuring reserve
	Add: Noncontrolling interests
	Adjusted total Biogen Inc. shareholders’ equity
	After Adjustment
	Adjusted total capital

Based on: 10-K (filing date: 2018-02-01), 10-K (filing date: 2017-02-02), 10-K (filing date: 2016-02-03), 10-K (filing date: 2015-02-04), 10-K (filing date: 2014-02-06).

Biogen Inc., adjusted net income attributable to Biogen Inc.

USD $ in thousands

	12 months ended	Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014	Dec 31, 2013
	As Reported
	Net income attributable to Biogen Inc.
	Adjustments
	Add: Deferred income tax expense (benefit)1
	Add: Increase (decrease) in reserves for allowances
	Add: Increase (decrease) in restructuring reserve
	Add: Other comprehensive income (loss), net of tax
	Add: Comprehensive income (loss), net of tax, attributable to noncontrolling interest
	After Adjustment
	Adjusted net income attributable to Biogen Inc.

Based on: 10-K (filing date: 2018-02-01), 10-K (filing date: 2017-02-02), 10-K (filing date: 2016-02-03), 10-K (filing date: 2015-02-04), 10-K (filing date: 2014-02-06).