1 7958 South Chester Street, Centennial, CO Square Feet: 167,917 United Launch Alliance Corporate Headquarters All amounts in this report are unaudited. Third Quarter 2016 Supplemental Operating and Financial Data Select Income REIT 350 Spectrum Loop, Colorado Springs, CO Square Feet: 155,808 FedEx Corporation (NYSE: FDX) Rocky Mountain Tech Center

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 2 T A B L E O F C O N T E N T S PAGE/EXHIBIT CORPORATE INFORMATION Company Profile 7 Investor Information 8 Research Coverage 9 FINANCIALS Key Financial Data 11 Condensed Consolidated Balance Sheets 12 Condensed Consolidated Statements of Income 13 Condensed Consolidated Statements of Cash Flows 14 Debt Summary 15 Debt Maturity Schedule 16 Leverage Ratios, Coverage Ratios and Public Debt Covenants 17 Capital Expenditures Summary 18 Property Acquisitions and Dispositions Information Since 1/1/16 19 Calculation of Property Net Operating Income (NOI) and Cash Basis NOI 20 Reconciliation of NOI to Same Property NOI and Calculation of Same Property Cash Basis NOI 21 Calculation of EBITDA and Adjusted EBITDA 22 Calculation of Funds from Operations (FFO) Attributed to SIR and Normalized FFO Attributed to SIR 23 Definitions of Certain Non-GAAP Financial Measures 24 PORTFOLIO INFORMATION Portfolio Summary by Property Type 26 Same Property Results of Operations 27 Leasing Summary 29 Occupancy and Leasing Analysis by Property Type 30 Tenant Diversity and Credit Characteristics 31 Tenants Representing 1% or More of Total Annualized Rental Revenue 32 Three Year Lease Expiration Schedule by Property Type 33 Portfolio Lease Expiration Schedule 34 Hawaii Land Rent Reset Summary 35 EXHIBIT Property Detail A TABLE OF CONTENTS

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 3 W A R N I N G C O N C E R N I N G F O R W A R D L O O K I N G S T A T E M E N T S THIS PRESENTATION OF SUPPLEMENTAL OPERATING AND FINANCIAL DATA CONTAINS STATEMENTS THAT CONSTITUTE FORWARD LOOKING STATEMENTS WITHIN THE MEANING OF THE PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995 AND OTHER SECURITIES LAWS. ALSO, WHENEVER WE USE WORDS SUCH AS “BELIEVE”, “EXPECT”, “ANTICIPATE”, “INTEND”, “PLAN”, “ESTIMATE”, “WILL”, “MAY” AND NEGATIVES OR DERIVATIVES OF THESE OR SIMILAR EXPRESSIONS, WE ARE MAKING FORWARD LOOKING STATEMENTS. THESE FORWARD LOOKING STATEMENTS ARE BASED UPON OUR PRESENT INTENT, BELIEFS OR EXPECTATIONS, BUT FORWARD LOOKING STATEMENTS ARE NOT GUARANTEED TO OCCUR AND MAY NOT OCCUR. FORWARD LOOKING STATEMENTS IN THIS REPORT RELATE TO VARIOUS ASPECTS OF OUR BUSINESS, INCLUDING: • THE LIKELIHOOD THAT OUR TENANTS WILL PAY RENT OR BE NEGATIVELY AFFECTED BY CYCLICAL ECONOMIC CONDITIONS, • THE LIKELIHOOD THAT OUR TENANTS WILL RENEW OR EXTEND THEIR LEASES OR THAT WE WILL BE ABLE TO OBTAIN REPLACEMENT TENANTS, • OUR ACQUISITIONS OF PROPERTIES, • OUR SALES OF PROPERTIES, • OUR ABILITY TO COMPETE FOR ACQUISITIONS AND TENANCIES EFFECTIVELY, • THE LIKELIHOOD THAT OUR RENTS MAY INCREASE WHEN RENTS ARE RESET AT OUR LEASED LANDS IN HAWAII, • OUR ABILITY TO PAY DISTRIBUTIONS TO OUR SHAREHOLDERS AND THE AMOUNT OF SUCH DISTRIBUTIONS, • THE FUTURE AVAILABILITY OF BORROWINGS UNDER OUR REVOLVING CREDIT FACILITY, • OUR POLICIES AND PLANS REGARDING INVESTMENTS, FINANCINGS AND DISPOSITIONS, • OUR ABILITY TO RAISE EQUITY OR DEBT CAPITAL, • OUR ABILITY TO PAY INTEREST ON AND PRINCIPAL OF OUR DEBT, • OUR ABILITY TO APPROPRIATELY BALANCE OUR USE OF EQUITY AND DEBT CAPITAL, • OUR CREDIT RATINGS, • OUR EXPECTATION THAT WE BENEFIT FROM OUR OWNERSHIP OF THE RMR GROUP INC., OR RMR INC., • OUR EXPECTATION THAT WE BENEFIT FROM OUR OWNERSHIP OF AFFILIATES INSURANCE COMPANY, OR AIC, AND FROM OUR PARTICIPATION IN INSURANCE PROGRAMS ARRANGED BY AIC, • OUR QUALIFICATION FOR TAXATION AS A REAL ESTATE INVESTMENT TRUST, OR REIT, • THE CREDIT QUALITIES OF OUR TENANTS, AND • OTHER MATTERS. OUR ACTUAL RESULTS MAY DIFFER MATERIALLY FROM THOSE CONTAINED IN OR IMPLIED BY OUR FORWARD LOOKING STATEMENTS AS A RESULT OF VARIOUS FACTORS. FACTORS THAT COULD HAVE A MATERIAL ADVERSE EFFECT ON OUR FORWARD LOOKING STATEMENTS AND UPON OUR BUSINESS, RESULTS OF OPERATIONS, FINANCIAL CONDITION, FUNDS FROM OPERATIONS, OR FFO, ATTRIBUTED TO SELECT INCOME REIT, OR SIR, NORMALIZED FUNDS FROM OPERATIONS, OR NORMALIZED FFO, ATTRIBUTED TO SIR, NET OPERATING INCOME, OR NOI, CASH BASIS NOI, EARNINGS BEFORE INTEREST, TAXES, DEPRECIATION AND AMORTIZATION, OR EBITDA, EBITDA AS ADJUSTED, OR ADJUSTED EBITDA, CASH FLOWS, LIQUIDITY AND PROSPECTS INCLUDE, BUT ARE NOT LIMITED TO: • THE IMPACT OF CHANGES IN THE ECONOMY AND THE CAPITAL MARKETS ON US AND OUR TENANTS, • COMPETITION WITHIN THE REAL ESTATE INDUSTRY, PARTICULARLY IN THOSE MARKETS IN WHICH OUR PROPERTIES ARE LOCATED, • COMPLIANCE WITH, AND CHANGES TO, FEDERAL, STATE AND LOCAL LAWS AND REGULATIONS, ACCOUNTING RULES, TAX LAWS AND SIMILAR MATTERS, • LIMITATIONS IMPOSED ON OUR BUSINESS AND OUR ABILITY TO SATISFY COMPLEX RULES IN ORDER FOR US TO QUALIFY FOR TAXATION AS A REIT FOR U.S. FEDERAL INCOME TAX PURPOSES, • ACTUAL AND POTENTIAL CONFLICTS OF INTEREST WITH OUR RELATED PARTIES, INCLUDING OUR MANAGING TRUSTEES, THE RMR GROUP LLC, OR RMR LLC, RMR INC., GOVERNMENT PROPERTIES INCOME TRUST, OR GOV, SENIOR HOUSING PROPERTIES TRUST, OR SNH, AIC, AND OTHERS AFFILIATED WITH THEM, AND WARNING CONCERNING FORWARD LOOKING STATEMENTS

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 4 W A R N I N G C O N C E R N I N G F O R W A R D L O O K I N G S T A T E M E N T S ( C O N T I N U E D ) • ACTS OF TERRORISM, OUTBREAKS OF SO CALLED PANDEMICS OR OTHER MANMADE OR NATURAL DISASTERS BEYOND OUR CONTROL. FOR EXAMPLE: • OUR ABILITY TO MAKE PAYMENTS OF PRINCIPAL AND INTEREST ON OUR INDEBTEDNESS AND TO MAKE FUTURE DISTRIBUTIONS TO OUR SHAREHOLDERS DEPENDS UPON A NUMBER OF FACTORS, INCLUDING OUR FUTURE EARNINGS AND THE CAPITAL COSTS WE INCUR TO LEASE OUR PROPERTIES. WE MAY BE UNABLE TO PAY OUR DEBT OBLIGATIONS OR TO MAINTAIN OUR CURRENT RATE OF DISTRIBUTIONS ON OUR COMMON SHARES AND FUTURE DISTRIBUTIONS MAY BE REDUCED OR ELIMINATED, • OUR ABILITY TO GROW OUR BUSINESS AND INCREASE OUR DISTRIBUTIONS DEPENDS IN LARGE PART UPON OUR ABILITY TO BUY PROPERTIES AND LEASE THEM FOR RENTS, LESS PROPERTY OPERATING COSTS, THAT EXCEED OUR CAPITAL COSTS. WE MAY BE UNABLE TO IDENTIFY PROPERTIES THAT WE WANT TO ACQUIRE OR TO NEGOTIATE ACCEPTABLE PURCHASE PRICES, ACQUISITION FINANCING OR LEASE TERMS FOR NEW PROPERTIES, • CONTINGENCIES IN OUR ACQUISITION AND SALE AGREEMENTS MAY NOT BE SATISFIED AND OUR PENDING ACQUISITIONS AND SALES MAY NOT OCCUR, MAY BE DELAYED OR THE TERMS OF SUCH TRANSACTIONS MAY CHANGE, • RENTS THAT WE CAN CHARGE AT OUR PROPERTIES MAY DECLINE BECAUSE OF CHANGING MARKET CONDITIONS OR OTHERWISE, • A SIGNIFICANT NUMBER OF OUR HAWAII PROPERTIES ARE LANDS LEASED FOR RENTS THAT ARE PERIODICALLY RESET BASED ON THEN CURRENT FAIR MARKET VALUES. REVENUES FROM OUR PROPERTIES IN HAWAII HAVE GENERALLY INCREASED DURING OUR OWNERSHIP AS THE LEASES FOR THOSE PROPERTIES HAVE BEEN RESET OR RENEWED. THERE CAN BE NO ASSURANCE THAT REVENUES FROM OUR HAWAII PROPERTIES WILL INCREASE AS A RESULT OF FUTURE RENT RESETS OR LEASE RENEWALS, AND FUTURE RENTS FROM THESE PROPERTIES COULD DECREASE OR NOT INCREASE TO THE EXTENT THEY HAVE IN THE PAST, • WE MAY NOT SUCCEED IN FURTHER DIVERSIFYING OUR TENANTS AND ANY DIVERSIFICATION WE MAY ACHIEVE MAY NOT MITIGATE OUR PORTFOLIO RISKS OR IMPROVE THE SECURITY OF OUR REVENUES OR OUR OPERATING PERFORMANCE, • OUR POSSIBLE REDEVELOPMENT OF CERTAIN OF OUR HAWAII PROPERTIES MAY NOT BE REALIZED OR BE SUCCESSFUL, • THE UNEMPLOYMENT RATE OR ECONOMIC CONDITIONS IN THE UNITED STATES MAY BECOME WORSE IN THE FUTURE. SUCH CIRCUMSTANCES OR OTHER CONDITIONS MAY REDUCE DEMAND FOR LEASING OFFICE AND INDUSTRIAL SPACE. IF THE DEMAND FOR LEASING OFFICE AND INDUSTRIAL SPACE IS REDUCED, WE MAY BE UNABLE TO RENEW LEASES WITH OUR TENANTS AS LEASES EXPIRE OR ENTER INTO NEW LEASES AT RENTAL RATES AS HIGH AS EXPIRING RATES, AND OUR FINANCIAL RESULTS MAY DECLINE, • OUR BELIEF THAT THERE IS A LIKELIHOOD THAT TENANTS MAY RENEW OR EXTEND OUR LEASES WHEN THEY EXPIRE WHENEVER THEY HAVE MADE SIGNIFICANT INVESTMENTS IN THE LEASED PROPERTIES, OR BECAUSE THOSE PROPERTIES MAY BE OF STRATEGIC IMPORTANCE TO THEM, MAY NOT BE REALIZED, • SOME OF OUR TENANTS MAY NOT RENEW EXPIRING LEASES, AND WE MAY BE UNABLE TO OBTAIN NEW TENANTS TO MAINTAIN OR INCREASE THE HISTORICAL OCCUPANCY RATES OF, OR RENTS FROM, OUR PROPERTIES, • WE MAY INCUR SIGNIFICANT COSTS TO PREPARE A PROPERTY FOR A TENANT, PARTICULARLY FOR SINGLE TENANT PROPERTIES, • CONTINUED AVAILABILITY OF BORROWINGS UNDER OUR REVOLVING CREDIT FACILITY IS SUBJECT TO OUR SATISFYING CERTAIN FINANCIAL COVENANTS AND OTHER CUSTOMARY CREDIT FACILITY CONDITIONS THAT WE MAY BE UNABLE TO SATISFY, • ACTUAL COSTS UNDER OUR REVOLVING CREDIT FACILITY OR OTHER FLOATING RATE CREDIT FACILITIES WILL BE HIGHER THAN LIBOR PLUS A PREMIUM BECAUSE OF OTHER FEES AND EXPENSES ASSOCIATED WITH SUCH FACILITIES, • WE MAY BE UNABLE TO REPAY OUR DEBT OBLIGATIONS WHEN THEY BECOME DUE, • THE MAXIMUM BORROWING AVAILABILITY UNDER OUR REVOLVING CREDIT FACILITY AND TERM LOAN MAY BE INCREASED TO UP TO $2.2 BILLION ON A COMBINED BASIS IN CERTAIN CIRCUMSTANCES; HOWEVER, INCREASING THE MAXIMUM BORROWING AVAILABILITY UNDER OUR REVOLVING CREDIT FACILITY AND TERM LOAN IS SUBJECT TO OUR OBTAINING ADDITIONAL COMMITMENTS FROM LENDERS, WHICH MAY NOT OCCUR, WARNING CONCERNING FORWARD LOOKING STATEMENTS (CONTINUED)

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 5 W A R N I N G C O N C E R N I N G F O R W A R D L O O K I N G S T A T E M E N T S ( C O N T I N U E D ) • WE HAVE THE OPTION TO EXTEND THE MATURITY DATE OF OUR REVOLVING CREDIT FACILITY UPON PAYMENT OF A FEE AND MEETING OTHER CONDITIONS. HOWEVER, THE APPLICABLE CONDITIONS MAY NOT BE MET, • WE RECEIVED AN ASSESSMENT FROM THE STATE OF WASHINGTON FOR REAL ESTATE EXCISE TAX, INTEREST AND PENALTIES OF $2.8 MILLION ON CERTAIN PROPERTIES WE ACQUIRED IN CONNECTION WITH OUR ACQUISITION OF COLE CORPORATE INCOME TRUST, INC., OR CCIT, IN JANUARY 2015. ALTHOUGH WE BELIEVE WE ARE EXEMPT FROM THIS TAX AND ARE DISPUTING THIS ASSESSMENT, WE MAY NOT SUCCEED IN HAVING ALL OR ANY PART OF THIS ASSESSMENT NULLIFIED, • THE BUSINESS MANAGEMENT AND PROPERTY MANAGEMENT AGREEMENTS BETWEEN US AND RMR LLC HAVE CONTINUING 20 YEAR TERMS. HOWEVER, THOSE AGREEMENTS INCLUDE TERMS WHICH PERMIT EARLY TERMINATION IN CERTAIN CIRCUMSTANCES. ACCORDINGLY, THERE CAN BE NO ASSURANCE THAT THESE AGREEMENTS WILL REMAIN IN EFFECT FOR CONTINUING 20 YEAR TERMS OR FOR SHORTER TERMS, • WE BELIEVE THAT OUR RELATIONSHIPS WITH OUR RELATED PARTIES, INCLUDING RMR LLC, RMR INC., GOV, SNH, AIC AND OTHERS AFFILIATED WITH THEM MAY BENEFIT US AND PROVIDE US WITH COMPETITIVE ADVANTAGES IN OPERATING AND GROWING OUR BUSINESS. HOWEVER, THE ADVANTAGES WE BELIEVE WE MAY REALIZE FROM THESE RELATIONSHIPS MAY NOT MATERIALIZE, AND • THE PREMIUMS USED TO DETERMINE THE INTEREST RATE PAYABLE ON OUR REVOLVING CREDIT FACILITY AND TERM LOAN AND THE FACILITY FEE PAYABLE ON OUR REVOLVING CREDIT FACILITY ARE BASED ON OUR CREDIT RATINGS. FUTURE CHANGES IN OUR CREDIT RATINGS MAY CAUSE THE INTEREST AND FEES WE PAY TO INCREASE. CURRENTLY UNEXPECTED RESULTS COULD OCCUR DUE TO MANY DIFFERENT CIRCUMSTANCES, SOME OF WHICH ARE BEYOND OUR CONTROL, SUCH AS ACTS OF TERRORISM, NATURAL DISASTERS, CHANGES IN OUR TENANTS’ FINANCIAL CONDITIONS, THE MARKET DEMAND FOR LEASED SPACE OR CHANGES IN CAPITAL MARKETS OR THE ECONOMY GENERALLY. THE INFORMATION CONTAINED IN OUR FILINGS WITH THE SECURITIES AND EXCHANGE COMMISSION, OR SEC, INCLUDING UNDER THE CAPTION "RISK FACTORS" IN OUR PERIODIC REPORTS, OR INCORPORATED THEREIN, IDENTIFIES OTHER IMPORTANT FACTORS THAT COULD CAUSE DIFFERENCES FROM OUR FORWARD LOOKING STATEMENTS. OUR FILINGS WITH THE SEC ARE AVAILABLE ON THE SEC’S WEBSITE AT WWW.SEC.GOV. YOU SHOULD NOT PLACE UNDUE RELIANCE UPON OUR FORWARD LOOKING STATEMENTS. EXCEPT AS REQUIRED BY LAW, WE DO NOT INTEND TO UPDATE OR CHANGE ANY FORWARD LOOKING STATEMENTS AS A RESULT OF NEW INFORMATION, FUTURE EVENTS OR OTHERWISE. WARNING CONCERNING FORWARD LOOKING STATEMENTS (CONTINUED)

6 CORPORATE INFORMATION 6 351, 401, 501 Elliott Ave West, Seattle, WA Square Feet: 299,643 F5 Networks (Nasdaq: FFIV) Corporate Headquarters

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 7 C O M P A N Y P R O F I L E Corporate Headquarters: Two Newton Place 255 Washington Street, Suite 300 Newton, MA 02458-1634 (t) (617) 796-8303 (f) (617) 796-8335 Stock Exchange Listing: Nasdaq Trading Symbol: Common Shares: SIR Issuer Ratings: Moody’s: Baa2 Standard & Poor’s: BBB- The Company: Select Income REIT, or SIR, we, our or us, is a real estate investment trust, or REIT, which owns properties that are primarily net leased to single tenants. As of September 30, 2016, we owned 120 properties (361 buildings, leasable land parcels and easements) with approximately 44.8 million rentable square feet located in 35 states, including 11 properties (229 buildings, leasable land parcels and easements) with approximately 17.8 million square feet which are primarily leasable industrial and commercial lands located in Hawaii. We have been investment grade rated since 2014, and we are included in the Russell 2000® Index and the MSCI US REIT Index. COMPANY PROFILE Management: SIR is managed by The RMR Group LLC, the operating subsidiary of The RMR Group Inc. (Nasdaq: RMR). RMR is an alternative asset management company that was founded in 1986 to manage real estate companies and related businesses. RMR primarily provides management services to four publicly owned real estate investment trusts, or REITs, and three real estate related operating businesses. In addition to managing SIR, RMR manages Hospitality Properties Trust, a REIT that owns hotels and travel centers, Senior Housing Properties Trust, a REIT that primarily owns healthcare, senior living and medical office buildings, and Government Properties Income Trust, a REIT that primarily owns properties leased to the U.S. and state governments. RMR also provides management services to TravelCenters of America LLC, a publicly traded operator of travel centers along the U.S. Interstate Highway System, convenience stores and restaurants, Five Star Quality Care, Inc., a publicly traded operator of senior living communities, and Sonesta International Hotels Corporation, a privately owned franchisor and operator of hotels and cruise ships. RMR also manages publicly traded securities of real estate companies and private commercial real estate debt funds through wholly owned SEC registered investment advisory subsidiaries. As of September 30, 2016, RMR had $23.8 billion of real estate assets under management and the combined RMR managed companies had approximately $11 billion of annual revenues, over 1,350 properties and more than 52,000 employees. We believe that being managed by RMR is a competitive advantage for SIR because of RMR’s depth of management and experience in the real estate industry. We also believe RMR provides management services to us at costs that are lower than we would have to pay for similar quality services. (1) See page 23 for the calculations of FFO attributed to SIR and Normalized FFO attributed to SIR and a reconciliation of net income attributed to SIR, determined in accordance with U.S. generally accepted accounting principles, or GAAP, to those amounts. Key Data (as of 9/30/2016): (dollars and sq. ft. in 000s) Total properties 120 Total sq. ft. 44,763 Percent leased 96.8% Q3 2016 total revenue 115,036$ Q3 2016 net income attributed to SIR 28,568$ 61,947$ Q3 2016 Normalized FFO attributed to SIR ⁽¹⁾

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 8 I N V E S T O R I N F O R M A T I O N INVESTOR INFORMATION Board of Trustees Donna D. Fraiche William A. Lamkin Jeffrey P. Somers Independent Trustee Independent Trustee Independent Trustee Adam D. Portnoy Barry M. Portnoy Managing Trustee Managing Trustee Senior Management David M. Blackman John C. Popeo President and Chief Operating Officer Chief Financial Officer and Treasurer Contact Information Investor Relations Inquiries Select Income REIT Financial inquiries should be directed to John C. Popeo, Two Newton Place Chief Financial Officer and Treasurer, at (617) 796-8303 255 Washington Street, Suite 300 or jpopeo@sirreit.com. Newton, MA 02458-1634 (t) (617) 796-8303 Investor and media inquiries should be directed to (f) (617) 796-8335 Christopher Ranjitkar, Director, Investor Relations, (e-mail) info@sirreit.com at (617) 796-8320 or cranjitkar@sirreit.com.

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 9 R E S E A R C H C O V E R A G E RESEARCH COVERAGE Equity Research Coverage Bank of America / Merrill Lynch James Feldman (646) 855-5808 james.feldman@baml.com FBR Capital Markets & Co. Bryan Maher (646) 885-5423 bmaher@fbr.com JMP Securities Mitch Germain (212) 906-3546 mgermain@jmpsecurities.com Morgan Stanley Vikram Malhotra (212) 761-7064 vikram.malhotra@morganstanley.com SIR is followed by the analysts and its credit is rated by the rating agencies listed above. Please note that any opinions, estimates or forecasts regarding SIR’s performance made by these analysts or agencies do not represent opinions, forecasts or predictions of SIR or its management. SIR does not by its reference above imply its endorsement of or concurrence with any information, conclusions or recommendations provided by any of these analysts or agencies. Rating Agencies Moody’s Investors Service Griselda Bisono (212) 553-4985 griselda.bisono@moodys.com Standard & Poor’s Michael Souers (212) 438-2508 michael.souers@standardandpoors.com

10 FINANCIALS 10 19100 Ridgewood Parkway, San Antonio, TX Square Feet: 618,017 Tesoro Corporation (NYSE: TSO) Corporate Headquarters

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 11 K E Y F I N A N C I A L D A T A KEY FINANCIAL DATA (dollars in thousands, except per share data) 9/30/2016 6/30/2016 3/31/2016 12/31/2015 9/30/2015 Selected Balance Sheet Data: Total gross assets (1) 4,880,238$ 4,853,401$ 4,876,990$ 4,849,124$ 4,893,849$ Total assets 4,657,256$ 4,649,793$ 4,692,810$ 4,684,345$ 4,749,263$ Total liabilities 2,565,322$ 2,553,157$ 2,591,733$ 2,587,385$ 2,576,459$ Total shareholders' equity 2,091,934$ 2,096,636$ 2,101,077$ 2,096,960$ 2,169,534$ Selected Income Statement Data: Total revenues 115,036$ 114,904$ 117,232$ 114,794$ 111,942$ Net income 28,568$ 30,752$ 32,812$ 10,917$ 30,801$ Net income attributed to SIR (2) 28,568$ 30,752$ 32,779$ 10,876$ 30,755$ NOI (3) 89,887$ 91,747$ 93,986$ 92,749$ 90,758$ Adjusted EBITDA (4) 83,322$ 85,472$ 87,359$ 88,150$ 84,670$ FFO (5) 61,934$ 64,157$ 66,204$ 43,526$ 63,750$ Normalized FFO attributed to SIR (5) 61,947$ 64,157$ 66,262$ 67,510$ 64,152$ Per Share Data: Net income attributed to SIR - basic and diluted 0.32$ 0.34$ 0.37$ 0.12$ 0.34$ FFO attributed to SIR - basic and diluted (5) 0.69$ 0.72$ 0.74$ 0.49$ 0.71$ Normalized FFO attributed to SIR - basic and diluted (5) 0.69$ 0.72$ 0.74$ 0.76$ 0.72$ Dividends: Annualized dividends paid per share (6) 2.04$ 2.00$ 2.00$ 2.00$ 2.00$ Annualized dividend yield (at end of period) (6) 7.6% 7.7% 8.7% 10.1% 10.5% Normalized FFO payout ratio (5) (6) 73.9% 69.4% 67.6% 65.8% 69.4% (1) Total gross assets is total assets plus accumulated depreciation. (2) Excludes an 11% noncontrolling interest of a third party in one property. In February 2016, we purchased this 11% interest at fair market value. (3) See page 20 for the calculation of NOI and a reconciliation of that amount to net income determined in accordance with GAAP. (4) See page 22 for the calculation of Adjusted EBITDA and a reconciliation of net income determined in accordance with GAAP to that amount. (5) See page 23 for the calculation of FFO attributed to SIR and Normalized FFO attributed to SIR and a reconciliation of net income attributed to SIR determined in accordance with GAAP to those amounts. (6) Annualized dividends paid per share for the three months ended December 31, 2015 excludes a $0.21 per common share non-cash distribution of RMR common stock to our shareholders on December 14, 2015. As of and For the Three Months Ended

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 12 C O N D E N S E D C O N S O L I D A T E D B A L A N C E S H E E T S CONDENSED CONSOLIDATED BALANCE SHEETS (dollars in thousands, except per share data) Land $ 1,037,445 $ 1,036,425 Buildings and improvements 3,099,126 3,083,243 4,136,571 4,119,668 Accumulated depreciation (222,982) (164,779) 3,913,589 3,954,889 Acquired real estate leases, net 519,952 566,195 Cash and cash equivalents 16,697 17,876 Restricted cash 1,203 1,171 Rents receivable, including straight line rents of $111,318 and $92,264, respectively, net of allowance for doubtful accounts of $808 and $464, respectively 117,163 99,307 Deferred leasing costs, net 9,762 7,221 Other assets, net 78,890 37,686 Total assets $ 4,657,256 $ 4,684,345 Unsecured revolving credit facility $ 297,000 $ 303,000 Unsecured term loan, net 348,249 347,876 Senior unsecured notes, net 1,429,247 1,426,025 Mortgage notes payable, net 286,102 286,706 Accounts payable and other liabilities 89,393 105,403 Assumed real estate lease obligations, net 79,833 86,495 Rents collected in advance 18,957 16,295 Security deposits 11,785 11,845 Due to related persons 4,756 3,740 Total liabilities 2,565,322 2,587,385 Commitments and contingencies Shareholders' equity: Common shares of beneficial interest, $.01 par value: 125,000,000 shares authorized; 89,428,912 and 89,374,029 shares issued and outstanding, respectively 894 894 Additional paid in capital 2,179,697 2,178,477 Cumulative net income 417,085 324,986 Cumulative other comprehensive income (loss) 17,029 (19,587) Cumulative common distributions (522,771) (387,810) Total shareholders' equity 2,091,934 2,096,960 Total liabilities and shareholders' equity $ 4,657,256 $ 4,684,345 September 30, December 31, Real estate properties: LIABILITIES AND SHAREHOLDERS' EQUITY 2016 2015 ASSETS

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 13 C O N D E N S E D C O N S O L I D A T E D S T A T E M E N T S O F I N C O M E CONDENSED CONSOLIDATED STATEMENTS OF INCOME (dollar and share amounts in thousands, except per share data) Revenues: Rental income $ 96,037 $ 94,745 $ 290,512 $ 267,389 Tenant reimbursements and other income 18,999 17,197 56,660 46,182 Total revenues 115,036 111,942 347,172 313,571 Expenses: Real estate taxes 10,755 9,871 31,565 27,247 Other operating expenses 14,394 11,313 39,987 30,121 Depreciation and amortization 33,366 33,070 100,240 90,179 Acquisition related costs 13 402 71 21,720 General and administrative 7,553 6,328 21,903 19,488 Total expenses 66,081 60,984 193,766 188,755 Operating income 48,955 50,958 153,406 124,816 Dividend income 397 - 872 - Interest expense (including net amortization of debt premiums and discounts and debt issuance costs of $1,374, $1,357, $4,124 and $3,738, respectively) (20,690) (20,034) (61,883) (53,710) Loss on early extinguishment of debt - - - (6,845) Income before income tax expense and equity in earnings (loss) of an investee 28,662 30,924 92,395 64,261 Income tax expense (107) (98) (370) (324) Equity in earnings (loss) of an investee 13 (25) 107 70 Net income 28,568 30,801 92,132 64,007 Net income allocated to noncontrolling interest - (46) (33) (135) Net income attributed to SIR $ 28,568 $ 30,755 $ 92,099 $ 63,872 Weighted average common shares outstanding - basic 89,308 89,267 89,295 85,827 Weighted average common shares outstanding - diluted 89,334 89,274 89,318 85,837 Net income attributed to SIR per common share - basic and diluted $ 0.32 $ 0.34 $ 1.03 $ 0.74 Additional Data: General and administrative expenses / total revenues 6.6% 5.7% 6.3% 6.2% General and administrative expenses / total assets (at end of period) 0.2% 0.1% 0.5% 0.4% Non-cash straight line rent adjustments included in rental income (1) $ 6,483 $ 7,922 $ 19,054 $ 20,395 Lease value amortization included in rental income (1) $ 443 $ 786 $ 1,298 $ 2,882 Lease termination fees included in rental income $ - $ - $ - $ 48 Non-cash amortization included in other operating expenses (2) $ 213 $ 215 $ 639 $ 215 Non-cash amortization included in general and administrative expenses (2) $ 345 $ 351 $ 1,034 $ 493 (1) We recorded a liability for the amount by which the estimated fair value for accounting purposes exceeded the price we paid for our investment in RMR common stock in June 2015. This liability is being amortized on a straight line basis through December 31, 2035 as an allocated reduction to business management fees and property management fees, which are included in general and administrative and other operating expenses, respectively. (2) We report rental income on a straight line basis over the terms of the respective leases; accordingly, rental income includes non-cash straight line rent adjustments. Rental income also includes non-cash amortization of intangible lease assets and liabilities and lease termination fees, if any. For the Nine Months Ended September 30, 2016 2015 For the Three Months Ended September 30, 2016 2015

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 14 C O N D E N S E D C O N S O L I D A T E D S T A T E M E N T S O F C A S H F L O W S CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (dollars in thousands) CASH FLOWS FROM OPERATING ACTIVITIES: Net income $ 92,132 $ 64,007 Adjustments to reconcile net income to net cash provided by operating activities: Depreciation 58,482 53,090 Net amortization of debt premiums and discounts and debt issuance costs 4,124 3,738 Amortization of acquired real estate leases and assumed real estate lease obligations 39,582 33,098 Amortization of deferred leasing costs 1,037 1,176 Provision for losses on rents receivable 431 (453) Straight line rental income (19,054) (20,395) Loss on early extinguishment of debt - 6,845 Other non-cash expenses, net (215) 886 Equity in earnings of an investee (107) (70) Change in assets and liabilities: Restricted cash (32) 24 Rents receivable 767 2,048 Deferred leasing costs (3,794) (1,342) Other assets (4,627) (6,345) Accounts payable and other liabilities (11,137) 11,790 Rents collected in advance 2,662 (2,750) Security deposits (60) 310 Due to related persons 1,016 1,357 Net cash provided by operating activities 161,207 147,014 CASH FLOWS FROM INVESTING ACTIVITIES: Real estate acquisitions and deposits (10,200) (2,147,626) Real estate improvements (6,739) (2,657) Proceeds from sale of properties, net - 509,045 Investment in The RMR Group Inc. - (18,461) Net cash used in investing activities (16,939) (1,659,699) CASH FLOWS FROM FINANCING ACTIVITIES: Proceeds from issuance of senior unsecured notes, net - 1,433,694 Proceeds from borrowings 135,000 1,774,000 Repayments of borrowings (141,207) (1,546,182) Debt issuance costs - (23,761) Distributions to common shareholders (134,961) (112,910) Repurchase of common shares (305) (130) Purchase of noncontrolling interest (3,908) - Distributions to noncontrolling interest (66) (283) Net cash (used in) provided by financing activities (145,447) 1,524,428 (Decrease) increase in cash and cash equivalents (1,179) 11,743 Cash and cash equivalents at beginning of period 17,876 13,504 Cash and cash equivalents at end of period $ 16,697 $ 25,247 SUPPLEMENTAL DISCLOSURES: Interest paid $ 71,374 $ 40,051 Income taxes paid $ 409 $ 294 NON-CASH INVESTING ACTIVITIES: Real estate and investment acquired by issuance of shares $ - $ (736,740) Real estate acquired by assumption of mortgage notes payable $ - $ (297,698) Real estate sold by assumption of mortgage notes payable $ - $ 29,955 Working capital assumed $ - $ (20,720) NON-CASH FINANCING ACTIVITIES: Assumption of mortgage notes payable $ - $ 297,698 Mortgage notes payable assumed in real estate sale $ - $ (29,955) Issuance of SIR common shares $ - $ 736,740 2016 2015 For the Nine Months Ended September 30,

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 15 D E B T S U M M A R Y DEBT SUMMARY (dollars in thousands) Coupon Interest Principal Maturity Due at Years to Rate (1) Rate (2) Balance (3) Date Maturity Maturity As of September 30, 2016: Unsecured Floating Rate Debt: Revolving credit facility (LIBOR + 105 bps) (4) (6) 1.503% 1.503% 297,000$ 3/29/2019 297,000$ 2.5 Term loan (LIBOR + 115 bps) (5) (6) 1.673% 1.673% 350,000 3/31/2020 350,000 3.5 Subtotal / weighted average unsecured floating rate debt 1.595% 1.595% 647,000 647,000 3.0 Unsecured Fixed Rate Debt: Senior notes due 2018 2.850% 2.985% 350,000 2/1/2018 350,000 1.3 Senior notes due 2020 3.600% 3.775% 400,000 2/1/2020 400,000 3.3 Senior notes due 2022 4.150% 4.360% 300,000 2/1/2022 300,000 5.3 Senior notes due 2025 4.500% 4.755% 400,000 2/1/2025 400,000 8.3 Subtotal / weighted average unsecured fixed rate debt 3.781% 3.976% 1,450,000 1,450,000 4.6 Secured Floating Rate Debt: One property (one building) in Duluth, GA (LIBOR + 140 bps) 1.963% 1.963% 40,233 12/19/2016 40,233 0.2 Secured Fixed Rate Debt: One property (two buildings) in Carlsbad, CA 5.950% 4.200% 17,565 9/1/2017 17,314 0.9 One property (one building) in Harvey, IL 4.500% 3.280% 1,992 6/1/2019 1,902 2.7 One property (one building) in Columbus, OH 4.500% 3.280% 2,390 6/1/2019 2,282 2.7 One property (one building) in Ankeny, IA 3.870% 3.380% 12,360 7/19/2020 12,360 3.8 One property (one building) in Philadelphia, PA (7) 2.523% 4.160% 41,000 8/3/2020 39,635 3.8 One property (one building) in Chester, VA 3.990% 3.480% 48,750 11/1/2020 48,750 4.1 One property (three buildings) in Seattle, WA 3.550% 3.790% 71,000 5/1/2023 71,000 6.6 One property (one building) in Chicago, IL 3.700% 3.590% 50,000 6/1/2023 50,000 6.7 Subtotal / weighted average secured fixed rate debt 3.701% 3.749% 245,057 243,243 5.0 Total / weighted average debt 3.148% 3.272% 2,382,290$ 2,380,476$ 4.2 (1) Reflects the interest rate stated in, or determined pursuant to, the contract terms. (2) Includes the effect of interest rate protection and mark to market accounting for certain mortgages and discounts on senior unsecured notes. Excludes upfront transaction costs. (3) (4) We have a $750,000 revolving credit facility which has a maturity date of March 29, 2019, interest payable on borrowings of LIBOR plus 105 basis points and a facility fee of 20 basis points. Both the interest rate premium and the facility fee for the revolving credit facility are subject to adjustment based on changes to our credit ratings. Upon the payment of an extension fee and meeting other conditions, we have the option to extend the maturity date to March 29, 2020. Principal balance represents the amount outstanding on our $750,000 revolving credit facility at September 30, 2016. Interest rate is as of September 30, 2016 and excludes the 20 basis points facility fee. (5) We have a $350,000 term loan with a maturity date of March 31, 2020 and an interest rate on the amount outstanding of LIBOR plus 115 basis points. The interest rate premium for the term loan is subject to adjustment based on changes to our credit ratings. Principal balance represents the amount outstanding on our $350,000 term loan at September 30, 2016. Interest rate is as of September 30, 2016. (6) (7) the mortgage note. Coupon rate is as of September 30, 2016. The maximum borrowing availability under the revolving credit facility and term loan, combined, may be increased to up to $2,200,000 on certain terms and conditions. Interest is payable at a rate equal to LIBOR plus a premium. The interest charge has been fixed by a cash flow hedge which sets the interest rate at approximately 4.16% until August 3, 2020, which is the maturity date of Principal balance excludes unamortized premiums, discounts and certain issuance costs related to these debts. Total debt outstanding as of September 30, 2016, net of unamortized premiums, discounts and certain issuance costs totaling $21,692, was $2,360,598.

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 16 DEBT M A TURIT Y SCHEDUL E DEBT MATURITY SCHEDULE (dollars in thousands) Unsecured Unsecured Secured Secured Floating Fixed Floating Fixed Year Rate Debt Rate Debt Rate Debt Rate Debt Total (3) 10/1/2016 - 12/31/2016 -$ -$ 40,233$ 85$ 40,318$ 2017 - - - 17,570 17,570 2018 - 350,000 - 304 350,304 2019 297,000 (1) - - 4,926 301,926 2020 350,000 (2) 400,000 - 101,172 851,172 2021 - - - - - 2022 - 300,000 - - 300,000 2023 - - - 121,000 121,000 2024 - - - - - 2025 - 400,000 - - 400,000 Total 647,000$ 1,450,000$ 40,233$ 245,057$ 2,382,290$ Percent 27.1% 60.9% 1.7% 10.3% 100.0% (1) Represents the amount outstanding on our $750,000 revolving credit facility at September 30, 2016. We have a $750,000 revolving credit facility which has a maturity date of the revolving credit facility are subject to adjustment based on changes to our credit ratings. Upon the payment of an extension fee and meeting other conditions, we have the option to extend the maturity date to March 29, 2020. (2) Represents the amount outstanding on our $350,000 term loan at September 30, 2016. We have a $350,000 term loan with a maturity date of March 31, 2020 and interest rate on the amount outstanding of LIBOR plus 115 basis points. The interest rate premium for the term loan is subject to adjustment based on changes to our credit ratings. (3) Scheduled Principal Payments As of September 30, 2016 March 29, 2019, interest payable on borrowings of LIBOR plus 105 basis points and a facility fee of 20 basis points. Both the interest rate premium and the facility fee for Total debt outstanding as of September 30, 2016, net of unamortized premiums, discounts and certain issuance costs totaling $21,692, was $2,360,598.

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 17 L E V E R A G E R A T I O S , C O V E R A G E R A T I O S A N D P U B L I C D E B T C O V E N A N T S LEVERAGE RATIOS, COVERAGE RATIOS AND PUBLIC DEBT COVENANTS 9/30/2016 6/30/2016 3/31/2016 12/31/2015 9/30/2015 Leverage Ratios: Total debt (book value) (1) / total gross assets (2) 48.4% 48.3% 49.0% 48.7% 48.3% Total debt (book value) (1) / gross book value of real estate assets (3) 49.9% 49.6% 50.6% 50.1% 50.5% Total debt (book value) (1) / total market capitalization (4) 49.5% 50.2% 53.7% 57.2% 58.2% Secured debt (book value) (1) / total assets 6.1% 6.2% 6.1% 6.1% 6.0% Variable rate debt (book value) (1) / total debt (book value) (1) 29.0% 28.5% 30.0% 29.2% 29.3% Coverage Ratios: Adjusted EBITDA (5) / interest expense 4.0x 4.2x 4.2x 4.4x 4.2x Total debt (book value) (1) / annualized Adjusted EBITDA (5) 7.1x 6.9x 6.8x 6.7x 7.0x Public Debt Covenants: Total debt / adjusted total assets (6) (maximum 60% ) 49.6% 49.7% 50.4% 50.2% 49.8% Secured debt / adjusted total assets (6) (maximum 40% ) 5.9% 6.0% 6.0% 6.0% 6.0% Consolidated income available for debt service (7) / annual debt service (minimum 1.50x) 4.5x 4.5x 4.6x 4.4x 4.3x Total unencumbered assets (6) / unsecured debt (minimum 150% ) 202.5% 202.4% 198.8% 200.0% 201.5% (1) (2) (3) Gross book value of real estate assets is real estate properties at cost, plus certain acquisition costs, if any, before depreciation and purchase price allocations, less impairment writedowns, if any. (4) Total market capitalization is total debt plus the market value of our common shares at the end of each period. (5) (6) (7) As of and For the Three Months Ended Adjusted total assets and total unencumbered assets include original cost of real estate assets calculated in accordance with GAAP and exclude depreciation and amortization, accounts receivable, other intangible assets and impairment writedowns, if any. Consolidated income available for debt service is earnings from operations excluding interest expense, depreciation and amortization, taxes, loss on asset impairment and gains and losses on acquisitions and sales of assets and early extinguishment of debt, determined together with debt service on a pro forma basis for the four consecutive fiscal quarters most recently ended. See page 22 for the calculation of Adjusted EBITDA and for a reconciliation of net income determined in accordance with GAAP to that amount. Debt amounts are net of unamortized premiums, discounts and certain issuance costs. Total gross assets is total assets plus accumulated depreciation.

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 18 C A P I T A L E X P E N D I T U R E S S U M M A R Y CAPITAL EXPENDITURES SUMMARY (dollars in thousands) 9/30/2016 6/30/2016 3/31/2016 12/31/2015 9/30/2015 Tenant improvements (1) 1,343$ 902$ 14$ 192$ 12$ Leasing costs (2) 227 121 3,139 303 1,297 Building improvements (3) 561 1,021 104 1,054 444 Recurring capital expenditures 2,131 2,044 3,257 1,549 1,753 Development, redevelopment and other activities (4) 613 1,187 748 694 69 Total capital expenditures 2,744$ 3,231$ 4,005$ 2,243$ 1,822$ (1) Tenant improvements include capital expenditures used to improve tenants' space or amounts paid directly to tenants to improve their space. (2) Leasing costs include leasing related costs, such as brokerage commissions, legal costs and tenant inducements. (3) Building improvements generally include (i) expenditures to replace obsolete building components and (ii) expenditures that extend the useful life of existing assets. (4) Development, redevelopment and other activities generally include (i) capital expenditures that are identified at the time of a property acquisition and incurred within a short time period after acquiring the property and (ii) capital expenditure projects that reposition a property or result in new sources of revenues. For the Three Months Ended

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 19 P R O P E R T Y A C Q U I S I T I O N S A N D D I S P O S I T I O N S I N F O R M A T I O N S I N C E 1 / 1 / 1 6 PROPERTY ACQUISITIONS AND DISPOSITIONS INFORMATION SINCE 1/1/16 Acquisitions (1): Weighted Average Purchase Remaining Date Number of Number of Purchase Price (2) / Cap Lease Term Percent Acquired Location Properties Buildings Sq. Ft. Price (2) Sq. Ft. Rate (3) in Years (4) Leased (5) 7/22/2016 Huntsville, AL 1 1 57 10,200$ 179$ 8.7% 15.0 100.0% Digium, Inc. 10/12/2016 Richmond, VA 1 1 50 7,760 155 8.9% 11.3 100.0% Universal Leaf Tobacco Company, Inc. Total / Weighted Average 2 2 107 17,960$ 168$ 8.8% 13.4 100.0% (1) (2) Represents the gross purchase price, excluding acquisition related costs, purchase price allocations and assumed mortgage debt. (3) Represents the ratio of (x) annual straight line rental income, excluding the impact of above and below market lease amortization, based on existing leases as of the date of acquisition, less estimated annual property operating expenses as of the date of acquisition, excluding depreciation and amortization expense, to (y) the acquisition purchase price, including the principal amount of any assumed debt and excluding acquisition related costs. (4) Average remaining lease term in years is weighted based on rental revenues as of the date acquired. (5) Percent leased is as of the date acquired. Dispositions: Tenant SIR has not disposed of any properties since January 1, 2016. In February 2016, SIR also acquired its joint venture partner's 11% interest in a 344,476 square foot net leased office building located in Duluth, GA for $3.9 million. As a result of that acquisition, SIR now wholly owns that property. (dollars and sq. ft. in thousands, except per sq. ft. data)

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 20 C A L C U L A T I O N O F P R O P E R T Y N E T O P E R A T I N G I N C O M E ( N O I ) A N D C A S H B A S I S N O I CALCULATION OF PROPERTY NET OPERATING INCOME (NOI) AND CASH BASIS NOI (1) (dollars in thousands) (1) See Definitions of Certain Non-GAAP Financial Measures on page 24 for a definition of NOI and Cash Basis NOI, a description of why we believe they are appropriate supplemental measures and a description of how we use these measures. (2) We report rental income on a straight line basis over the terms of the respective leases; accordingly, rental income includes non-cash straight line rent adjustments. Rental income also includes non-cash amortization of intangible lease assets and liabilities and lease termination fees, if any. (3) We recorded a liability for the amount by which the estimated fair value for accounting purposes exceeded the price we paid for our investment in RMR common stock in June 2015. A portion of this liability is being amortized on a straight line basis through December 31, 2035 as a reduction to property management fees, which are included in other operating expenses. 9/30/2016 6/30/2016 3/31/2016 12/31/2015 9/30/2015 9/30/2016 9/30/2015 Calculation of NOI and Cash Basis NOI: Rental income 96,037$ 96,615$ 97,860$ 96,750$ 94,745$ 290,512$ 267,389$ Tenant reimbursements and other income 18,999 18,289 19,372 18,044 17,197 56,660 46,182 Real estate taxes (10,755) (10,522) (10,288) (10,213) (9,871) (31,565) (27,247) Other operating expenses (14,394) (12,635) (12,958) (11,832) (11,313) (39,987) (30,121) NOI 89,887 91,747 93,986 92,749 90,758 275,620 256,203 Non-cash straight line rent adjustments included in rental income (2) (6,483) (6,269) (6,302) (6,975) (7,922) (19,054) (20,395) Lease value amortization included in rental income (2) (443) (419) (436) (548) (786) (1,298) (2,882) Lease termination fees included in rental income (2) - - - (75) - - (48) Non-cash amortization included in other operating expenses (3) (213) (213) (213) (215) (215) (639) (215) Cash Basis NOI 82,748$ 84,846$ 87,035$ 84,936$ 81,835$ 254,629$ 232,663$ Reconciliation of Cash Basis NOI and NOI to Net Income: Cash Basis NOI 82,748$ 84,846$ 87,035$ 84,936$ 81,835$ 254,629$ 232,663$ Non-cash straight line rent adjustments included in rental income (2) 6,483 6,269 6,302 6,975 7,922 19,054 20,395 Lease value amortization included in rental income (2) 443 419 436 548 786 1,298 2,882 Lease termination fees included in rental income (2) - - - 75 - - 48 Non-cash amortization included in other operating expenses (3) 213 213 213 215 215 639 215 NOI 89,887 91,747 93,986 92,749 90,758 275,620 256,203 Depreciation and amortization (33,366) (33,405) (33,469) (32,727) (33,070) (100,240) (90,179) Acquisition related costs (13) - (58) (267) (402) (71) (21,720) General and administrative (7,553) (7,374) (6,976) (6,371) (6,328) (21,903) (19,488) Operating income 48,955 50,968 53,483 53,384 50,958 153,406 124,816 Dividend income 397 475 - 1,666 - 872 - Interest expense (20,690) (20,584) (20,609) (20,175) (20,034) (61,883) (53,710) Loss on early extinguishment of debt - - - - - - (6,845) Loss on distribution to common shareholders of RMR common stock - - - (23,717) - - - of an investee 28,662 30,859 32,874 11,158 30,924 92,395 64,261 Income tax expense (107) (124) (139) (191) (98) (370) (324) Equity in earnings (loss) of an investee 13 17 77 (50) (25) 107 70 Net income 28,568$ 30,752$ 32,812$ 10,917$ 30,801$ 92,132$ 64,007$ For the Three Months Ended For the Nine Months Ended Income before income tax expense and equity in earnings (loss)

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 21RECONCILI A T ION OF NOI T O SAME PROPERT Y N O I A N D C A L C U L A T I O N O F S A M E P R O P E R T Y C A S H B A S I S N O I RECONCILIATION OF NOI TO SAME PROPERTY NOI AND CALCULATION OF SAME PROPERTY CASH BASIS NOI (1) (dollars in thousands) (1) See Definitions of Certain Non-GAAP Financial Measures on page 24 for a definition of NOI and Cash Basis NOI, a description of why we believe they are appropriate supplemental measures and a description of how we use these measures. (2) For the three months ended September 30, 2016, same property NOI and Cash Basis NOI are based on properties we owned as of September 30, 2016, and which we owned continuously since July 1, 2015. (3) For the nine months ended September 30, 2016, same property NOI and Cash Basis NOI are based on properties we owned as of September 30, 2016, and which we owned continuously since January 1, 2015. (4) We report rental income on a straight line basis over the terms of the respective leases; accordingly, rental income includes non-cash straight line rent adjustments. Rental income also includes non-cash amortization of intangible lease assets and liabilities and lease termination fees, if any. (5) We recorded a liability for the amount by which the estimated fair value for accounting purposes exceeded the price we paid for our investment in RMR common stock in June 2015. A portion of this liability is being amortized on a straight line basis through December 31, 2035 as a reduction to property management fees, which are included in other operating expenses. 9/30/2016 9/30/2015 9/30/2016 9/30/2015 Rental income 96,037$ 94,745$ 290,512$ 267,389$ Tenant reimbursements and other income 18,999 17,197 56,660 46,182 Real estate taxes (10,755) (9,871) (31,565) (27,247) Other operating expenses (14,394) (11,313) (39,987) (30,121) NOI 89,887 90,758 275,620 256,203 Less: NOI of properties not included in same property results (3,518) (1,941) (133,808) (112,696) Same property NOI 86,369$ 88,817$ 141,812$ 143,507$ Same property NOI 86,369$ 88,817$ 141,812$ 143,507$ Less: Non-cash straight line rent adjustments included in rental income (4) (6,088) (7,661) (8,678) (10,627) Lease value amortization included in rental income (4) (1,224) (1,233) (196) (282) Lease termination fees included in rental income (4) - - - (48) Non-cash amortization included in other operating expenses (5) (213) (216) (402) (134) Same property Cash Basis NOI 78,844$ 79,707$ 132,536$ 132,416$ Calculation of Same Property Cash Basis NOI (2)(3): For the Three Months Ended For the Nine Months Ended Reconciliation of NOI to Same Property NOI (2)(3):

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 22 C A L C U L A T I O N O F E B I T D A A N D A D J U S T E D E B I T D A CALCULATION OF EBITDA AND ADJUSTED EBITDA (1) (dollars in thousands) (1) See Definitions of Certain Non-GAAP Financial Measures on page 24 for a definition of EBITDA and Adjusted EBITDA and a description of why we believe they are appropriate supplemental measures. (2) Amounts represent the portion of business management fees that were payable in our common shares as well as equity based compensation to our trustees, officers and certain other employees of RMR’s operating subsidiary, The RMR Group LLC. Beginning June 1, 2015, all business management fees are paid in cash. (3) We recorded a $6,845 loss on early extinguishment of debt in the first quarter of 2015 in connection with the termination of a bridge loan and the refinancing of our revolving credit facility and term loan. (4) Amount represents a non-cash loss recorded as a result of the closing price of RMR common stock being lower than our carrying amount per share on the day we distributed RMR common stock to our shareholders. 9/30/2016 6/30/2016 3/31/2016 12/31/2015 9/30/2015 9/30/2016 9/30/2015 Net income 28,568$ 30,752$ 32,812$ 10,917$ 30,801$ 92,132$ 64,007$ Plus: interest expense 20,690 20,584 20,609 20,175 20,034 61,883 53,710 Plus: income tax expense 107 124 139 191 98 370 324 Plus: depreciation and amortization 33,366 33,405 33,469 32,727 33,070 100,240 90,179 EBITDA 82,731 84,865 87,029 64,010 84,003 254,625 208,220 Plus: acquisition related costs 13 - 58 267 402 71 21,720 Plus: general and administrative expense paid in common shares (2) 578 607 272 156 265 1,457 1,595 Plus: loss on early extinguishment of debt (3) - - - - - - 6,845 Plus: loss on distribution to common shareholders of RMR common stock (4) - - - 23,717 - - - Adjusted EBITDA 83,322$ 85,472$ 87,359$ 88,150$ 84,670$ 256,153$ 238,380$ For the Three Months Ended For the Nine Months Ended

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 23C A L C U L A T I O N O F F U N D S F R O M O P E R A T I O N S ( F F O ) A T T R I B U T E D T O S I R A N D N O R M A L I Z E D F F O A T T R I B U T E D T O S I R CALCULATION OF FUNDS FROM OPERATIONS (FFO) ATTRIBUTED TO SIR AND NORMALIZED FFO ATTRIBUTED TO SIR (1) (amounts in thousands, except per share data) (1) See Definitions of Certain Non-GAAP Financial Measures on page 24 for a definition of FFO attributed to SIR and Normalized FFO attributed to SIR, a description of why we believe they are appropriate supplemental measures and a description of how we use these measures. (2) Amount represents a non-cash loss recorded as a result of the closing price of RMR common stock being lower than our carrying amount per share on the day we distributed RMR common stock to our shareholders. 9/30/2016 6/30/2016 3/31/2016 12/31/2015 9/30/2015 9/30/2016 9/30/2015 Net income attributed to SIR 28,568$ 30,752$ 32,779$ 10,876$ 30,755$ 92,099$ 63,872$ Plus: depreciation and amortization 33,366 33,405 33,469 32,727 33,070 100,240 90,179 Plus: net income allocated to noncontrolling interest - - 33 41 46 33 135 Less: FFO allocated to noncontrolling interest - - (77) (118) (121) (77) (318) FFO attributed to SIR 61,934 64,157 66,204 43,526 63,750 192,295 153,868 Plus: acquisition related costs 13 - 58 267 402 71 21,720 Plus: loss on early extinguishment of debt - - - - - - 6,845 Plus: loss on distribution to common shareholders of RMR common stock (2) - - - 23,717 - - - Less: normalized FFO from noncontrolling interest, net of FFO - - - - - - (62) Normalized FFO attributed to SIR 61,947$ 64,157$ 66,262$ 67,510$ 64,152$ 192,366$ 182,371$ Weighted average common shares outstanding - basic 89,308 89,292 89,286 89,285 89,267 89,295 85,827 Weighted average common shares outstanding - diluted 89,334 89,315 89,295 89,291 89,274 89,318 85,837 Net income attributed to SIR per share - basic and diluted 0.32$ 0.34$ 0.37$ 0.12$ 0.34$ 1.03$ 0.74$ FFO attributed to SIR per share - basic and diluted 0.69$ 0.72$ 0.74$ 0.49$ 0.71$ 2.15$ 1.79$ Normalized FFO attributed to SIR per share - basic and diluted 0.69$ 0.72$ 0.74$ 0.76$ 0.72$ 2.15$ 2.12$ For the Three Months Ended For the Nine Months Ended

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 24 D E F I N I T I O N S O F C E R T A I N N O N - G A A P F I N A N C I A L M E A S U R E S DEFINITIONS OF CERTAIN NON-GAAP FINANCIAL MEASURES NOI and Cash Basis NOI: The calculations of NOI and Cash Basis NOI exclude certain components of net income in order to provide results that are more closely related to our property level results of operations. We calculate NOI and Cash Basis NOI as shown on page 20. We define NOI as income from our rental of real estate less our property operating expenses. NOI excludes amortization of capitalized tenant improvement costs and leasing commissions because we record those amounts as depreciation and amortization. We define Cash Basis NOI as NOI excluding non-cash straight line rent adjustments, lease value amortization, lease termination fees, if any, and non-cash amortization included in other operating expenses. We consider NOI and Cash Basis NOI to be appropriate supplemental measures to net income because they may help both investors and management to understand the operations of our properties. We use NOI and Cash Basis NOI to evaluate individual and company wide property level performance, and we believe that NOI and Cash Basis NOI provide useful information to investors regarding our results of operations because they reflect only those income and expense items that are generated and incurred at the property level and may facilitate comparisons of our operating performance between periods and with other REITs. NOI and Cash Basis NOI do not represent cash generated by operating activities in accordance with GAAP and should not be considered as an alternative to net income, net income attributed to SIR or operating income as an indicator of our operating performance or as a measure of our liquidity. These measures should be considered in conjunction with net income, net income attributed to SIR and operating income as presented in our Condensed Consolidated Statements of Income. Other real estate companies and REITs may calculate NOI and Cash Basis NOI differently than we do. EBITDA and Adjusted EBITDA: We calculate EBITDA and Adjusted EBITDA as shown on page 22. We consider EBITDA and Adjusted EBITDA to be appropriate supplemental measures of our operating performance, along with net income, net income attributed to SIR and operating income. We believe that EBITDA and Adjusted EBITDA provide useful information to investors because by excluding the effects of certain historical amounts, such as interest, depreciation and amortization expense, EBITDA and Adjusted EBITDA may facilitate a comparison of current operating performance with our past operating performance. EBITDA and Adjusted EBITDA do not represent cash generated by operating activities in accordance with GAAP and should not be considered an alternative to net income, net income attributed to SIR or operating income as an indicator of operating performance or as a measure of our liquidity. These measures should be considered in conjunction with net income, net income attributed to SIR and operating income as presented in our Condensed Consolidated Statements of Income. Other real estate companies and REITs may calculate EBITDA and Adjusted EBITDA differently than we do. FFO Attributed to SIR and Normalized FFO Attributed to SIR: We calculate FFO attributed to SIR and Normalized FFO attributed to SIR as shown on page 23. FFO attributed to SIR is calculated on the basis defined by The National Association of Real Estate Investment Trusts, or NAREIT, which is net income, calculated in accordance with GAAP, plus real estate depreciation and amortization and the difference between net income and FFO allocated to noncontrolling interest, as well as certain other adjustments currently not applicable to us. Our calculation of Normalized FFO attributed to SIR differs from NAREIT’s definition of FFO because we include business management incentive fees, if any, only in the fourth quarter versus the quarter when they are recognized as expense in accordance with GAAP due to their quarterly volatility not necessarily being indicative of our core operating performance and the uncertainty as to whether any such business management incentive fees will ultimately be payable when all contingencies for determining any such fees are determined at the end of the calendar year and we exclude acquisition related costs, loss on early extinguishment of debt, loss on distribution to common shareholders of RMR common stock and Normalized FFO from noncontrolling interest, net of FFO, if any. We consider FFO attributed to SIR and Normalized FFO attributed to SIR to be appropriate supplemental measures of operating performance for a REIT, along with net income, net income attributed to a REIT and operating income. We believe that FFO attributed to SIR and Normalized FFO attributed to SIR provide useful information to investors because by excluding the effects of certain historical amounts, such as depreciation expense, FFO attributed to SIR and Normalized FFO attributed to SIR may facilitate a comparison of our operating performance between periods and with other REITs. FFO attributed to SIR and Normalized FFO attributed to SIR are among the factors considered by our Board of Trustees when determining the amount of distributions to our shareholders. Other factors include, but are not limited to, requirements to maintain our qualification for taxation as a REIT, limitations in our credit agreement and public debt covenants, the availability to us of debt and equity capital, our expectation of our future capital requirements and operating performance and our expected needs and availability of cash to pay our obligations. FFO attributed to SIR and Normalized FFO attributed to SIR do not represent cash generated by operating activities in accordance with GAAP and should not be considered as alternatives to net income, net income attributed to SIR or operating income as an indicator of our operating performance or as a measure of our liquidity. These measures should be considered in conjunction with net income, net income attributed to SIR and operating income as presented in our Condensed Consolidated Statements of Income. Other real estate companies and REITs may calculate FFO and Normalized FFO differently than we do.

25 PORTFOLIO INFORMATION 25 7001 Columbia Gateway Drive, Columbia, MD Square Feet: 119,912 Merkle Group, Inc. Corporate Headquarters

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 26 P O R T F O L I O S U M M A R Y B Y P R O P E R T Y T Y P E PORTFOLIO SUMMARY BY PROPERTY TYPE (dollars and sq. ft. in thousands) Mainland Mainland Subtotal Mainland Hawaii Key Statistic Office Industrial Properties Properties Total Number of properties 65 44 109 11 120 Percent of total 54.1% 36.7% 90.8% 9.2% 100.0% Leasable buildings, land parcels and easements 86 46 132 229 361 Percent of total 23.8% 12.8% 36.6% 63.4% 100.0% Total square feet 12,670 14,315 26,985 17,778 44,763 Percent of total 28.3% 32.0% 60.3% 39.7% 100.0% Leased square feet 12,285 14,315 26,600 16,733 43,333 Percent leased 97.0% 100.0% 98.6% 94.1% 96.8% Total revenues 72,250$ 20,122$ 92,372$ 22,664$ 115,036$ Percent of total 62.8% 17.5% 80.3% 19.7% 100.0% NOI (1) 54,986$ 17,638$ 72,624$ 17,263$ 89,887$ Percent of total 61.2% 19.6% 80.8% 19.2% 100.0% Cash Basis NOI (1) 50,066$ 16,242$ 66,308$ 16,440$ 82,748$ Percent of total 60.5% 19.6% 80.1% 19.9% 100.0% (1) See page 20 for the calculation of NOI and Cash Basis NOI and a reconciliation of those amounts to net income determined in accordance with GAAP. As of and For the Three Months Ended September 30, 2016

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 27 S A M E P R O P E R T Y R E S U L T S O F O P E R A T I O N S SAME PROPERTY RESULTS OF OPERATIONS (sq. ft. in thousands) 9/30/2016 9/30/2015 9/30/2016 9/30/2015 Number of Properties: Mainland Office 61 61 28 28 Mainland Industrial 44 44 12 12 Subtotal Mainland Properties 105 105 40 40 Hawaii Properties 11 11 11 11 Total 116 116 51 51 Leasable buildings, land parcels and easements: Mainland Office 80 80 39 39 Mainland Industrial 46 46 13 13 Subtotal Mainland Properties 126 126 52 52 Hawaii Properties 229 229 229 229 Total 355 355 281 281 Square Feet (3): Mainland Office 11,829 11,829 5,345 5,345 Mainland Industrial 14,315 14,315 4,548 4,548 Subtotal Mainland Properties 26,144 26,144 9,893 9,893 Hawaii Properties 17,778 17,778 17,778 17,778 Total 43,922 43,922 27,671 27,671 Percent Leased (4): Mainland Office 96.7% 100.0% 92.8% 100.0% Mainland Industrial 100.0% 100.0% 100.0% 100.0% Subtotal Mainland Properties 98.5% 100.0% 96.1% 100.0% Hawaii Properties 94.1% 94.3% 94.1% 94.3% Total 96.7% 97.7% 94.8% 96.3% As of and For the Three Months Ended (1) As of and For the Nine Months Ended (2) (1) Consists of properties that we owned continuously since July 1, 2015. (2) Consists of properties that we owned continuously since January 1, 2015. (3) Subject to modest adjustments when space is re-measured or re-configured for new tenants and when land leases are converted to building leases. (4) Includes (i) space being fitted out for occupancy pursuant to existing leases, if any, and (ii) space that is leased but is not occupied or is being offered for sublease by tenants, if any.

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 28 S A M E P R O P E R T Y R E S U L T S O F O P E R A T I O N S ( C O N T I N U E D ) SAME PROPERTY RESULTS OF OPERATIONS (CONTINUED) (dollars in thousands) 9/30/2016 9/30/2015 9/30/2016 9/30/2015 Total Revenues: Mainland Office 66,590$ 66,784$ 86,675$ 86,937$ Mainland Industrial 20,122 20,012 21,116 20,710 Subtotal Mainland Properties 86,712 86,796 107,791 107,647 Hawaii Properties 22,664 22,113 68,491 67,041 Total 109,376$ 108,909$ 176,282$ 174,688$ NOI (3): Mainland Office 51,469$ 53,206$ 69,906$ 71,621$ Mainland Industrial 17,637 17,947 18,573 18,218 Subtotal Mainland Properties 69,106 71,153 88,479 89,839 Hawaii Properties 17,263 17,664 53,333 53,668 Total 86,369$ 88,817$ 141,812$ 143,507$ Cash Basis NOI (3): Mainland Office 46,163$ 46,511$ 64,613$ 64,490$ Mainland Industrial 16,241 16,334 17,163 16,579 Subtotal Mainland Properties 62,404 62,845 81,776 81,069 Hawaii Properties 16,440 16,862 50,760 51,347 Total 78,844$ 79,707$ 132,536$ 132,416$ NOI % Change: Mainland Office -3.3% -2.4% Mainland Industrial -1.7% 1.9% Subtotal Mainland Properties -2.9% -1.5% Hawaii Properties -2.3% -0.6% Total -2.8% -1.2% Cash Basis NOI % Change: Mainland Office -0.7% 0.2% Mainland Industrial -0.6% 3.5% Subtotal Mainland Properties -0.7% 0.9% Hawaii Properties -2.5% -1.1% Total -1.1% 0.1% As of and For the Three Months Ended (1) As of and For the Nine Months Ended (2) (1) Consists of properties that we owned continuously since July 1, 2015. (2) Consists of properties that we owned continuously since January 1, 2015. (3) See page 20 for the calculation of NOI and Cash Basis NOI and a reconciliation of those amounts to net income determined in accordance with GAAP and see page 21 for a calculation and reconciliation of same property NOI and same property Cash Basis NOI.

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 29 LEASING SUMMA R Y LEASING SUMMARY (dollars and sq. ft. in thousands, except per sq. ft. data) The above leasing summary is based on leases entered into during the periods indicated. 9/30/2016 6/30/2016 3/31/2016 12/31/2015 9/30/2015 Properties 120 119 119 119 118 Leasable buildings, land parcels and easements 361 360 360 360 359 Total sq. ft. (1) 44,763 44,706 44,706 44,706 44,606 Square feet leased 43,333 43,279 43,700 43,712 43,591 Percentage leased 96.8% 96.8% 97.8% 97.8% 97.7% Leasing Activity (Sq. Ft.): New leases 8 15 42 72 60 Renewals 989 133 438 97 1,209 Total 997 148 480 169 1,269 % Change in GAAP Rent (2): New leases 16.4% -21.9% 19.7% 25.5% 21.2% Renewals 4.8% 24.6% 13.6% 26.6% 9.5% Weighted average 4.9% 15.5% 13.9% 26.1% 10.0% Leasing Costs and Concession Commitments (3): New leases 3$ 66$ 349$ 720$ 20$ Renewals 845 25 12,263 27 4,226 Total 848$ 91$ 12,612$ 747$ 4,246$ Leasing Costs and Concession Commitments per Sq. Ft. (3): New leases 0.38$ 4.40$ 8.31$ 10.00$ 0.33$ Renewals 0.85$ 0.19$ 28.00$ 0.28$ 3.50$ Total 0.85$ 0.61$ 26.28$ 4.42$ 3.35$ Weighted Average Lease Term by Sq. Ft. (years): New leases 7.0 4.3 21.9 21.7 10.0 Renewals 9.1 13.2 15.3 16.9 20.8 Total 9.1 12.3 15.8 18.9 20.2 Leasing Costs and Concession Commitments per Sq. Ft. per Year (3) (4): New leases 0.05$ 1.02$ 0.38$ 0.46$ 0.03$ Renewals 0.09$ 0.01$ 1.83$ 0.02$ 0.17$ Total 0.09$ 0.05$ 1.66$ 0.23$ 0.17$ (1) Subject to modest adjustments when space is re-measured or re-configured for new tenants and when land leases are converted to building leases. (2) Percent difference in prior rents charged for same space. Rents include estimated recurring expense reimbursements and exclude lease value amortization. (3) Includes commitments made for leasing expenditures and concessions, such as tenant improvements, leasing commissions, tenant reimbursements and free rent. (4) Amounts are per square foot per year for the weighted average lease term by leased square feet. As of and For the Three Months Ended

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 30 O C C U P A N C Y A N D L E A S I N G A N A L Y S I S B Y P R O P E R T Y T Y P E OCCUPANCY AND LEASING ANALYSIS BY PROPERTY TYPE (sq. ft. in thousands) Total Sq. Ft. (1) As of Property Type 9/30/2016 New Renewals Total Mainland Office 12,670 - 1 1 Mainland Industrial 14,315 - 963 963 Subtotal Mainland Properties 26,985 - 964 964 Hawaii Properties 17,778 8 25 33 Total 44,763 8 989 997 As of 6/30/2016 New and Acquisitions / As of 9/30/2016 Property Type 6/30/2016 % Leased (2) Expired Renewals (Sales) 9/30/2016 % Leased Mainland Office 12,228 96.9% (1) 1 57 12,285 97.0% Mainland Industrial 14,315 100.0% (963) 963 - 14,315 100.0% Subtotal Mainland Properties 26,543 98.6% (964) 964 57 26,600 98.6% Hawaii Properties 16,736 94.1% (36) 33 - 16,733 94.1% Total 43,279 96.8% (1,000) 997 57 43,333 96.8% (1) Subject to modest adjustments when space is re-measured or re-configured for new tenants and when land leases are converted to building leases. (2) Excludes effects of space remeasurements during the period, if any. Percent leased includes (i) space being fitted out for occupancy pursuant to existing leases as of the period, if any, and (ii) space which is leased but is not occupied or is being offered for sublease by tenants, if any. Sq. Ft. Leases Executed During the Three Months Ended 9/30/2016 Sq. Ft. Leased

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 31 T E N A N T D I V E R S I T Y A N D C R E D I T C H A R A C T E R I S T I C S TENANT DIVERSITY AND CREDIT CHARACTERISTICS (3) As of September 30, 2016 (2)

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 32 T E N A N T S R E P R E S E N T I N G 1 % O R M O R E O F T O T A L A N N U A L I Z E D R E N T A L R E V E N U E TENANTS REPRESENTING 1% OR MORE OF TOTAL ANNUALIZED RENTAL REVENUE (sq. ft. in thousands) As of September 30, 2016 % of % of Total Annualized Rental Property Type Sq. Ft. (1) Sq. Ft. (1) Revenue (2) 1. Shook, Hardy & Bacon L.L.P. Mainland Office 596 1.4% 4.0% 2. Tellabs, Inc. Mainland Office 820 1.9% 3.7% 3. Amazon.com, Inc. Mainland Industrial 3,048 7.0% 3.6% 4. Bank of America, National Association Mainland Office 554 1.3% 3.2% 5. Noble Energy, Inc. Mainland Office 497 1.1% 3.1% 6. Tesoro Corporation Mainland Office 618 1.4% 3.1% 7. Cinram Group, Inc. Mainland Industrial 1,873 4.3% 2.9% 8. F5 Networks, Inc. Mainland Office 299 0.7% 2.9% 9. WestRock Company Mainland Office 311 0.7% 2.4% 10. Orbital ATK, Inc. Mainland Office 337 0.8% 2.3% 11. Tyson Foods, Inc. Mainland Office 248 0.6% 2.1% 12. Novell, Inc. Mainland Office 406 0.9% 1.8% 13. FedEx Corporation Mainland Office; Mainland Industrial 795 1.8% 1.7% 14. PNC Bank, National Association Mainland Office 441 1.0% 1.4% 15. Allstate Insurance Company Mainland Office 458 1.1% 1.3% 16. ServiceNow, Inc. Mainland Office 149 0.3% 1.3% 17. Church & Dwight Co., Inc. Mainland Office 250 0.6% 1.3% 18. Restoration Hardware, Inc. Mainland Industrial 1,195 2.8% 1.3% 19. Tailored Brands, Inc. Mainland Office 206 0.5% 1.2% 20. Primerica Life Insurance Company Mainland Office 344 0.8% 1.2% 21. American Tire Distributors, Inc. Mainland Industrial 722 1.7% 1.1% 22. United Launch Alliance, LLC Mainland Office 168 0.4% 1.1% 23. The Southern Company Mainland Office 448 1.0% 1.1% 24. Compass Group USA, Inc. Mainland Office 227 0.5% 1.1% 25. Red Hat, Inc. Mainland Office 175 0.4% 1.0% Total 15,185 35.0% 51.2% (1) Pursuant to existing leases as of September 30, 2016 and includes (i) space being fitted out for occupancy, if any, and (ii) space which is leased but is not occupied or is being offered for sublease by tenants, if any. (2) Annualized rental revenue is calculated as the annualized contractual rents, as of September 30, 2016, from tenants pursuant to existing leases, including straight line rent adjustments and excluding lease value amortization, and further adjusted for tenant concessions, including free rent and amounts reimbursed to tenants, plus estimated recurring expense reimbursements from tenants pursuant to existing leases. Tenant

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 33 THREE YEAR LEASE EXPIR A TION SCHEDULE B Y PROPERT Y TYP E THREE YEAR LEASE EXPIRATION SCHEDULE BY PROPERTY TYPE (dollars and sq. ft. in thousands)As of September 30, 2016 2019 and Total 2016 2017 2018 Thereafter Mainland Office: Total sq. ft. 12,670 Leased sq. ft. (1) 12,285 - 135 753 11,397 Percent 0.0% 1.1% 6.1% 92.8% Annualized rental revenue (2) 281,140$ -$ 2,519$ 9,371$ 269,250$ Percent 0.0% 0.9% 3.3% 95.8% Mainland Industrial: Total sq. ft. 14,315 Leased sq. ft. (1) 14,315 - 93 55 14,167 Percent 0.0% 0.6% 0.4% 99.0% Annualized rental revenue (2) 80,603$ -$ 1,380$ 1,004$ 78,219$ Percent 0.0% 1.7% 1.2% 97.1% Subtotal Mainland Properties: Total sq. ft. 26,985 Leased sq. ft. (1) 26,600 - 228 808 25,564 Percent 0.0% 0.9% 3.0% 96.1% Annualized rental revenue (2) 361,743$ -$ 3,899$ 10,375$ 347,469$ Percent 0.0% 1.1% 2.9% 96.0% Hawaii Properties: Total sq. ft. 17,778 Leased sq. ft. (1) 16,733 134 248 330 16,021 Percent 0.8% 1.5% 2.0% 95.7% Annualized rental revenue (2) 89,866$ 625$ 1,175$ 3,985$ 84,081$ Percent 0.7% 1.3% 4.4% 93.6% Total: Total sq. ft. 44,763 Leased sq. ft. (1) 43,333 134 476 1,138 41,585 Percent 0.3% 1.1% 2.6% 96.0% Annualized rental revenue (2) 451,609$ 625$ 5,074$ 14,360$ 431,550$ Percent 0.1% 1.1% 3.2% 95.6% (1) Pursuant to existing leases as of September 30, 2016 and includes (i) space being fitted out for occupancy, if any, and (ii) space which is leased but is not occupied, or is being offered for sublease, if any. (2) Annualized rental revenue is calculated as the annualized contractual rents, as of September 30, 2016, from tenants pursuant to existing leases, including straight line rent adjustments and excluding lease value amortization, and further adjusted for tenant concessions, including free rent and amounts reimbursed to tenants, plus estimated recurring expense reimbursements from tenants pursuant to existing leases.

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 34 P O R T F O L I O L E A S E E X P I R A T I O N S C H E D U L E PORTFOLIO LEASE EXPIRATION SCHEDULE (dollars and sq. ft. in thousands) Cumulative % of Total Cumulative % % of Total % of Total Rented Rented of Total Rented Annualized Annualized Annualized Number of Square Feet Square Feet Square Feet Rental Revenue Rental Revenue Rental Revenue Period / Year Tenants Expiring (1) Expiring (1) Expiring (1) Expiring (2) Expiring (2) Expiring (2) 10/1/2016 - 12/31/2016 9 134 0.3% 0.3% 625$ 0.1% 0.1% 2017 13 476 1.1% 1.4% 5,074 1.1% 1.2% 2018 25 1,138 2.6% 4.0% 14,360 3.2% 4.4% 2019 18 1,887 4.4% 8.4% 8,724 1.9% 6.3% 2020 15 961 2.2% 10.6% 9,115 2.0% 8.3% 2021 19 1,441 3.3% 13.9% 12,871 2.9% 11.2% 2022 70 3,917 9.0% 22.9% 49,185 10.9% 22.1% 2023 24 2,942 6.8% 29.7% 38,339 8.5% 30.6% 2024 23 7,001 16.2% 45.9% 68,719 15.2% 45.8% 2025 16 1,770 4.1% 50.0% 26,208 5.8% 51.6% Thereafter 109 21,666 50.0% 100.0% 218,389 48.4% 100.0% Total 341 43,333 100.0% 451,609$ 100.0% Weighted average remaining lease term (in years) 10.6 10.1 (1) Rented square feet is pursuant to existing leases as of September 30, 2016, and includes (i) space being fitted out for occupancy pursuant to existing leases, if any, and (ii) space which is leased but is not occupied or is being offered for sublease by tenants, if any. (2) Annualized rental revenue is calculated as the annualized contractual rents, as of September 30, 2016, from tenants pursuant to existing leases, including straight line rent adjustments and excluding lease value amortization, and further adjusted for tenant concessions, including free rent and amounts reimbursed to tenants, plus estimated recurring expense reimbursements from tenants pursuant to existing leases. As of September 30, 2016

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 35 H A W A I I L A N D R E N T R E S E T S U M M A R Y HAWAII LAND RENT RESET SUMMARY (dollars and sq. ft. in thousands) Historical Hawaii Land Rent Resets: 9/30/2016 6/30/2016 3/31/2016 12/31/2015 9/30/2015 Number of leases subject to resets 1 - - 1 1 Square feet 86 - - 70 46 Percent change in GAAP rent (1) 43.0% 0.0% 0.0% 44.3% 55.0% Scheduled Hawaii Land Rent Resets: As of September 30, 2016 Number Annualized of Resets Sq. Ft. Rental Revenue (2) - - -$ 6 337 1,883 8 380 2,525 58 5,288 30,101 72 6,005 34,509$ (1) Percent difference in prior rents charged for same space. Reset rents include estimated recurring expense reimbursements and exclude lease value amortization. (2) Annualized rental revenue is calculated as the annualized contractual rents, as of September 30, 2016, from tenants pursuant to existing leases, including straight line rent adjustments and excluding lease value amortization, and further adjusted for tenant concessions, including free rent and amounts reimbursed to tenants, plus estimated recurring expense reimbursements from tenants pursuant to existing leases. Total For the Three Months Ended 2017 2018 2019 and Thereafter 10/1/2016 - 12/31/2016

36EXHIBIT Mapunapuna Ground Leases, Honolulu, HI 129 leasable land parcels and easements Approximate Square Feet: 6,541,000

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 37 P R O P E R T Y D E T A I L PROPERTY DETAIL (dollars and square feet in thousands) EXHIBIT AAs of September 30, 2016 (1) Land parcels include four easements. (2) Annualized rental revenue is calculated as the annualized contractual rents, as of September 30, 2016, from tenants pursuant to existing leases, including straight line rent adjustments and excluding lease value amortization, and further adjusted for tenant concessions, including free rent and amounts reimbursed to tenants, plus estimated recurring expense reimbursements from tenants pursuant to existing leases. (3) Excludes the value of real estate intangibles. (4) Date acquired is the date we acquired the property or the date our former parent entity acquired the property for those properties that our former parent entity contributed to us in February 2012 in connection with our initial public offering. (5) Weighted based on square feet. Weighted Number of Average Year Buildings & Annualized Built or Contiguous Rental Undepreciated Depreciated Date Substantially Property City State Land Parcels (1) Property Type Square Feet % Leased Revenue (2) Carrying Value (3) Carrying Value (3) Acquired (4) Renovated (5) 1. Inverness Center Birmingham AL 3 Mainland Office Building 448 100.0% 4,843$ 38,631$ 33,912$ 12/9/2010; 4/17/2015 1985 2. Cinram Distribution Center Huntsville AL 1 Mainland Industrial Building 1,371 100.0% 9,210 73,001 66,123 8/31/2012 2007 3. 445 Jan Davis Drive Huntsville AL 1 Mainland Office Building 57 100.0% 927 10,290 10,251 7/22/2016 2007 4. 4501 Industrial Drive Fort Smith AR 1 Mainland Industrial Building 64 100.0% 465 4,385 4,240 1/29/2015 2013 5. 16001 North 28th Avenue Phoenix AZ 1 Mainland Office Building 106 100.0% 1,845 13,680 13,291 4/16/2015 2007 6. 2149 West Dunlap Avenue Phoenix AZ 1 Mainland Office Building 123 100.0% 2,437 20,066 19,465 1/29/2015 1983 7. Regents Center Tempe AZ 2 Mainland Office Building 101 100.0% 1,847 13,012 8,446 6/30/1999 1988 8. Campbell Place Carlsbad CA 2 Mainland Office Building 95 100.0% 2,598 21,314 19,520 9/21/2012 2007 9. Folsom Corporate Center Folsom CA 1 Mainland Office Building 96 100.0% 3,418 28,954 25,288 12/17/2010 2009 10. Bayside Technology Park Fremont CA 1 Mainland Office Building 101 100.0% 2,162 10,581 9,627 3/19/2009 1990 11. 100 Redwood Shores Parkway Redwood City CA 1 Mainland Office Building 63 100.0% 3,095 35,531 34,563 1/29/2015 2014 12. 3875 Atherton Road Rocklin CA 1 Mainland Office Building 19 100.0% 410 4,180 4,014 1/29/2015 1991 13. 2090 Fortune Drive San Jose CA 1 Mainland Office Building 72 100.0% 914 7,698 7,615 1/29/2015 2014 14. 2115 O’Nel Drive San Jose CA 1 Mainland Office Building 99 100.0% 3,138 33,098 32,052 1/29/2015 2013 15. 6448-6450 Via Del Oro San Jose CA 1 Mainland Office Building 76 100.0% 1,736 14,729 14,247 1/29/2015 1983 16. North First Street San Jose CA 1 Mainland Office Building 64 100.0% 1,959 14,491 13,943 12/23/2013 2013 17. Rio Robles Drive San Jose CA 3 Mainland Office Building 186 100.0% 4,590 44,925 42,978 12/23/2013 2011 18. 2450 & 2500 Walsh Avenue Santa Clara CA 2 Mainland Office Building 132 100.0% 4,489 44,797 43,272 1/29/2015 2014 19. 3250 and 3260 Jay Street Santa Clara CA 2 Mainland Office Building 149 100.0% 6,018 63,958 61,789 1/29/2015 2013 20. 350 West Java Drive Sunnyvale CA 1 Mainland Office Building 96 100.0% 2,859 24,012 22,792 11/15/2012 2012 21. 7958 South Chester Street Centennial CO 1 Mainland Office Building 168 100.0% 4,879 31,017 30,045 1/29/2015 2000 22. 350 Spectrum Loop Colorado Springs CO 1 Mainland Office Building 156 100.0% 2,713 23,265 22,425 1/29/2015 2000 23. 955 Aeroplaza Drive Colorado Springs CO 1 Mainland Industrial Building 125 100.0% 896 8,212 7,903 1/29/2015 2012 24. 13400 East 39th Avenue and 3800 Wheeling Street Denver CO 2 Mainland Industrial Building 394 100.0% 1,345 16,101 15,556 1/29/2015 1996 25. 333 Inverness Drive South Englewood CO 1 Mainland Office Building 140 100.0% 2,389 15,446 14,138 6/15/2012 1998 26. 150 Greenhorn Drive Pueblo CO 1 Mainland Industrial Building 54 100.0% 545 4,377 4,203 1/29/2015 2013 27. 2 Tower Drive Wallingford CT 1 Mainland Industrial Building 62 100.0% 400 3,643 3,097 10/24/2006 1978 28. 1 Targeting Center Windsor CT 1 Mainland Office Building 97 100.0% 1,119 9,076 8,323 7/20/2012 1999 29. 235 Great Pond Road Windsor CT 1 Mainland Industrial Building 171 100.0% 1,383 11,869 10,883 7/20/2012 2004 30. 10350 NW 112th Avenue Miami FL 1 Mainland Office Building 79 100.0% 3,077 23,469 22,638 1/29/2015 2002 31. 2100 NW 82nd Ave Miami FL 1 Mainland Industrial Building 37 100.0% 265 1,897 1,248 3/19/1998 2013

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 38 P R O P E R T Y D E T A I L ( C O N T I N U E D ) PROPERTY DETAIL (CONTINUED) (dollars and square feet in thousands) EXHIBIT AAs of September 30, 2016 (1) Land parcels include four easements. (2) Annualized rental revenue is calculated as the annualized contractual rents, as of September 30, 2016, from tenants pursuant to existing leases, including straight line rent adjustments and excluding lease value amortization, and further adjusted for tenant concessions, including free rent and amounts reimbursed to tenants, plus estimated recurring expense reimbursements from tenants pursuant to existing leases. (3) Excludes the value of real estate intangibles. (4) Date acquired is the date we acquired the property or the date our former parent entity acquired the property for those properties that our former parent entity contributed to us in February 2012 in connection with our initial public offering. (5) Weighted based on square feet. (6) Excludes annual tenant percentage rent generally received and recognized during the first quarter of each year for the previous year. Percentage rent recognized during the first quarter of 2016 totaled $846. Weighted Number of Average Year Buildings & Annualized Built or Contiguous Rental Undepreciated Depreciated Date Substantially Property City State Land Parcels (1) Property Type Square Feet % Leased Revenue (2) Carrying Value (3) Carrying Value (3) Acquired (4) Renovated (5) 32. One Primerica Parkway Duluth GA 1 Mainland Office Building 344 100.0% 5,221 57,332 55,231 1/29/2015 2013 33. King Street Ground Lease Honolulu HI 1 Hawaii Properties Land 21 100.0% 237 1,342 1,342 12/5/2003 - 34. Mapunapuna Ground Leases Honolulu HI 129 Hawaii Properties Land 6,541 100.0% 48,798 344,477 341,362 12/5/2003;11/21/2012 - 35. Safeway Shopping Center Honolulu HI 3 Hawaii Properties Land 158 100.0% 2,658 11,604 11,522 12/5/2003 - 36. Salt Lake Shopping Center Honolulu HI 2 Hawaii Properties Land 334 100.0% 1,702 9,660 9,660 12/5/2003 - 37. Sand Island Buildings Honolulu HI 8 Hawaii Properties Building 295 98.0% 4,955 39,116 33,141 12/5/2003;11/23/2004 1974 38. Sand Island Ground Leases Honolulu HI 40 Hawaii Properties Land 2,152 100.0% 16,230 92,435 92,382 12/5/2003 - 39. Waiwai Ground Leases Honolulu HI 2 Hawaii Properties Land 45 0.0% - 2,567 2,421 12/5/2003 - 40. Campbell Buildings Kapolei HI 5 Hawaii Properties Building 285 100.0% 3,291 24,152 19,347 6/15/2005 1978 41. Campbell Easements Kapolei HI 3 Hawaii Properties Land - - - (6) 10,496 10,496 6/15/2005 - 42. Campbell Ground Leases Kapolei HI 35 Hawaii Properties Land 7,901 87.4% 11,745 102,983 102,704 6/15/2005 - 43. Waipahu Ground Lease Waipahu HI 1 Hawaii Properties Land 44 100.0% 250 717 717 12/5/2003 - 44. 5500 SE Delaware Avenue Ankeny IA 1 Mainland Industrial Building 450 100.0% 1,687 19,193 18,485 1/29/2015 2012 45. 951 Trails Road Eldridge IA 1 Mainland Industrial Building 172 100.0% 1,021 8,560 6,736 4/2/2007 2001 46. 8305 NW 62nd Avenue Johnston IA 1 Mainland Office Building 199 100.0% 3,240 34,008 32,695 1/29/2015 2011 47. 2300 N 33rd Ave Newton IA 1 Mainland Industrial Building 317 100.0% 1,458 13,823 11,147 9/29/2008 2008 48. 7121 South Fifth Avenue Pocatello ID 1 Mainland Industrial Building 33 100.0% 370 4,691 4,516 1/29/2015 2007 49. 400 South Jefferson Street Chicago IL 1 Mainland Office Building 248 100.0% 9,591 90,479 87,425 1/29/2015 2012 50. 1230 West 171st Street Harvey IL 1 Mainland Industrial Building 40 100.0% 430 2,473 2,403 1/29/2015 2004 51. 475 Bond Street Lincolnshire IL 1 Mainland Industrial Building 223 100.0% 1,607 20,957 20,288 1/29/2015 2000 52. 1415 West Diehl Road Naperville IL 1 Mainland Office Building 820 100.0% 16,766 188,475 177,555 4/1/2014 2001 53. 5156 American Road Rockford IL 1 Mainland Industrial Building 38 100.0% 173 1,929 1,865 1/29/2015 1996 54. 440 North Fairway Drive Vernon Hills IL 1 Mainland Office Building 100 100.0% 1,679 13,977 13,236 10/15/2013 2009 55. Capitol Tower Topeka KS 1 Mainland Office Building 144 100.0% 2,612 17,616 15,927 7/30/2012 2006 56. The Atrium at Circleport II Erlanger KY 1 Mainland Office Building 86 100.0% 1,160 13,032 9,406 6/30/2003 1999 57. 17200 Manchac Park Lane Baton Rouge LA 1 Mainland Industrial Building 125 100.0% 884 10,560 10,191 1/29/2015 2014 58. 209 South Bud Street Lafayette LA 1 Mainland Industrial Building 60 100.0% 511 5,249 5,059 1/29/2015 2010 59. 300 and 330 Billerica Road Chelmsford MA 2 Mainland Office Building 209 53.1% 1,505 18,566 16,819 1/18/2011;9/27/2012 2001 60. 111 Powdermill Road Maynard MA 1 Mainland Office Building 287 0.0% - 29,900 23,637 3/30/2007 1990 61. 314 Littleton Road Westford MA 1 Mainland Office Building 175 100.0% 4,560 33,944 32,676 1/29/2015 2013

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 39 P R O P E R T Y D E T A I L ( C O N T I N U E D ) PROPERTY DETAIL (CONTINUED) (dollars and square feet in thousands) EXHIBIT AAs of September 30, 2016 (1) Land parcels include four easements. (2) Annualized rental revenue is calculated as the annualized contractual rents, as of September 30, 2016, from tenants pursuant to existing leases, including straight line rent adjustments and excluding lease value amortization, and further adjusted for tenant concessions, including free rent and amounts reimbursed to tenants, plus estimated recurring expense reimbursements from tenants pursuant to existing leases. (3) Excludes the value of real estate intangibles. (4) Date acquired is the date we acquired the property or the date our former parent entity acquired the property for those properties that our former parent entity contributed to us in February 2012 in connection with our initial public offering. (5) Weighted based on square feet. Weighted Number of Average Year Buildings & Annualized Built or Contiguous Rental Undepreciated Depreciated Date Substantially Property City State Land Parcels (1) Property Type Square Feet % Leased Revenue (2) Carrying Value (3) Carrying Value (3) Acquired (4) Renovated (5) 62. 7001 Columbia Gateway Drive Columbia MD 1 Mainland Office Building 120 100.0% 3,677 28,292 25,987 12/21/2012 2008 63. 4000 Principio Parkway North East MD 1 Mainland Industrial Building 1,195 100.0% 5,803 75,779 72,800 1/29/2015 2012 64. 3550 Green Court Ann Arbor MI 1 Mainland Office Building 82 100.0% 1,625 13,019 12,019 12/21/2012 1998 65. 3800 Midlink Drive Kalamazoo MI 1 Mainland Industrial Building 158 100.0% 2,185 43,229 41,537 1/29/2015 2014 66. 2401 Cram Avenue SE Bemidji MN 1 Mainland Industrial Building 22 100.0% 183 2,237 2,148 1/29/2015 2013 67. 110 Stanbury Industrial Drive Brookfield MO 1 Mainland Industrial Building 16 100.0% 189 2,059 1,981 1/29/2015 2012 68. 2555 Grand Boulevard Kansas City MO 1 Mainland Office Building 596 100.0% 17,996 78,218 76,063 7/31/2015 2003 69. 628 Patton Avenue Asheville NC 1 Mainland Industrial Building 33 100.0% 199 2,014 1,951 1/29/2015 1994 70. 2300 and 2400 Yorkmont Road Charlotte NC 2 Mainland Office Building 284 100.0% 6,101 44,080 42,327 1/29/2015 1995 71. 3900 NE 6th Street Minot ND 1 Mainland Industrial Building 24 100.0% 341 3,923 3,789 1/29/2015 2013 72. 1415 West Commerce Way Lincoln NE 1 Mainland Industrial Building 222 100.0% 1,094 10,718 10,363 1/29/2015 2000 73. 18010 and 18020 Burt Street Omaha NE 2 Mainland Office Building 203 100.0% 3,993 49,842 47,874 1/29/2015 2012 74. 309 Dulty's Lane Burlington NJ 1 Mainland Industrial Building 634 100.0% 3,325 53,000 50,858 1/29/2015 2001 75. 500 Charles Ewing Boulevard Ewing NJ 1 Mainland Office Building 250 100.0% 5,935 74,374 71,496 1/29/2015 2012 76. 725 Darlington Avenue Mahwah NJ 1 Mainland Industrial Building 167 100.0% 2,292 18,046 17,451 4/9/2014 2010 77. One Jefferson Road Parsippany NJ 1 Mainland Office Building 100 100.0% 4,216 19,107 18,765 11/13/2015 2009 78. 299 Jefferson Road Parsippany NJ 1 Mainland Office Building 151 100.0% 4,031 30,970 29,884 1/29/2015 2011 79. 2375 East Newlands Road Fernley NV 1 Mainland Industrial Building 338 100.0% 1,439 18,700 17,975 1/29/2015 2007 80. 55 Commerce Avenue Albany NY 1 Mainland Industrial Building 125 100.0% 1,091 11,284 10,861 1/29/2015 2013 81. 8687 Carling Road Liverpool NY 1 Mainland Office Building 38 100.0% 746 5,564 4,224 1/6/2006 2007 82. 1212 Pittsford - Victor Road Pittsford NY 1 Mainland Office Building 55 100.0% 1,024 5,539 4,418 11/30/2004 2003 83. 500 Canal View Boulevard Rochester NY 1 Mainland Office Building 95 100.0% 1,563 15,406 11,031 1/6/2006 1997 84. 32150 Just Imagine Drive Avon OH 1 Mainland Industrial Building 645 100.0% 3,479 25,480 21,212 5/29/2009 2000 85. 1415 Industrial Drive Chillicothe OH 1 Mainland Industrial Building 44 100.0% 362 4,465 4,329 1/29/2015 2012 86. 2231 Schrock Road Columbus OH 1 Mainland Office Building 42 100.0% 692 5,195 5,009 1/29/2015 1999 87. 5300 Centerpoint Parkway Groveport OH 1 Mainland Industrial Building 581 100.0% 2,877 32,563 31,319 1/29/2015 2014 88. 200 Orange Point Drive Lewis Center OH 1 Mainland Industrial Building 125 100.0% 1,038 9,913 9,554 1/29/2015 2013 89. 301 Commerce Drive South Point OH 1 Mainland Industrial Building 75 100.0% 485 5,130 4,941 1/29/2015 2013 90. 2820 State Highway 31 McAlester OK 1 Mainland Industrial Building 24 100.0% 218 2,537 2,444 1/29/2015 2012 91. 501 Ridge Avenue Hanover PA 1 Mainland Industrial Building 502 100.0% 3,739 27,030 22,562 9/24/2008 1965

Select Income REIT Supplemental Operating and Financial Data, September 30, 2016 40 P R O P E R T Y D E T A I L ( C O N T I N U E D ) PROPERTY DETAIL (CONTINUED) (dollars and square feet in thousands) EXHIBIT AAs of September 30, 2016 (1) Land parcels include four easements. (2) Annualized rental revenue is calculated as the annualized contractual rents, as of September 30, 2016, from tenants pursuant to existing leases, including straight line rent adjustments and excluding lease value amortization, and further adjusted for tenant concessions, including free rent and amounts reimbursed to tenants, plus estimated recurring expense reimbursements from tenants pursuant to existing leases. (3) Excludes the value of real estate intangibles. (4) Date acquired is the date we acquired the property or the date our former parent entity acquired the property for those properties that our former parent entity contributed to us in February 2012 in connection with our initial public offering. (5) Weighted based on square feet. Weighted Number of Average Year Buildings & Annualized Built or Contiguous Rental Undepreciated Depreciated Date Substantially Property City State Land Parcels (1) Property Type Square Feet % Leased Revenue (2) Carrying Value (3) Carrying Value (3) Acquired (4) Renovated (5) 92. 8800 Tinicum Boulevard Philadelphia PA 1 Mainland Office Building 441 100.0% 6,451 71,016 68,220 1/29/2015 2000 93. 9680 Old Bailes Road Fort Mill SC 1 Mainland Office Building 60 100.0% 771 8,857 8,521 1/29/2015 2007 94. 996 Paragon Way Rock Hill SC 1 Mainland Industrial Building 945 100.0% 3,041 38,520 37,023 1/29/2015 2014 95. 510 John Dodd Road Spartanburg SC 1 Mainland Industrial Building 1,016 100.0% 4,664 61,298 58,882 1/29/2015 2012 96. 4836 Hickory Hill Road Memphis TN 1 Mainland Industrial Building 646 100.0% 1,699 12,298 11,822 12/23/2014 2007 97. 2020 Joe B. Jackson Parkway Murfreesboro TN 1 Mainland Industrial Building 1,016 100.0% 5,045 62,759 60,457 1/29/2015 2012 98. 16001 North Dallas Parkway Addison TX 2 Mainland Office Building 554 100.0% 14,296 105,724 96,972 1/16/2013 1996 99. 2115-2116 East Randol Mill Road Arlington TX 1 Mainland Office Building 183 100.0% 1,031 13,242 12,613 1/29/2015 1989 100. Research Park Austin TX 2 Mainland Industrial Building 149 100.0% 2,384 15,463 9,568 6/16/1999 1999 101. 1001 Noble Energy Way Houston TX 1 Mainland Office Building 497 100.0% 14,016 121,731 116,807 1/29/2015 1998 102. 10451 Clay Road Houston TX 1 Mainland Office Building 97 100.0% 2,789 27,012 26,103 1/29/2015 2013 103. 6380 Rogerdale Road Houston TX 1 Mainland Office Building 206 100.0% 5,530 46,880 45,495 1/29/2015 2006 104. 4421 W. John Carp. Freeway Irving TX 1 Mainland Office Building 54 100.0% 635 5,974 3,315 3/19/1998 1995 105. 8675,8701-8711 Freeport Pkwy and 8901 Esters Boulevard Irving TX 3 Mainland Office Building 458 100.0% 6,038 81,610 78,722 1/29/2015 1990 106. 1511 East Common Street New Braunfels TX 1 Mainland Office Building 63 100.0% 1,070 14,412 13,924 1/29/2015 2005 107. 2900 West Plano Parkway Plano TX 1 Mainland Office Building 191 100.0% 1,420 27,491 26,562 1/29/2015 1998 108. 3400 West Plano Parkway Plano TX 1 Mainland Office Building 235 100.0% 1,485 34,392 33,084 1/29/2015 1994 109. 19100 Ridgewood Parkway San Antonio TX 1 Mainland Office Building 618 100.0% 13,809 192,538 184,707 1/29/2015 2008 110. 3600 Wiseman Boulevard San Antonio TX 1 Mainland Office Building 100 100.0% 3,003 15,423 14,354 3/19/2013 2004 111. 1800 Novell Place Provo UT 1 Mainland Office Building 406 100.0% 7,940 85,640 77,088 6/1/2012 2000 112. 4885-4931 North 300 West Provo UT 2 Mainland Office Building 125 100.0% 3,649 29,338 27,014 2/28/2013 2009 113. 1095 South 4800 West Salt Lake City UT 1 Mainland Industrial Building 150 100.0% 1,107 8,413 8,125 1/29/2015 2012 114. 1901 Meadowville Technology Parkway Chester VA 1 Mainland Industrial Building 1,016 100.0% 6,343 71,511 68,698 1/29/2015 2012 115. 501 South 5th Street Richmond VA 1 Mainland Office Building 311 100.0% 10,868 123,672 114,749 7/2/2013 2009 116. Parham Place Richmond VA 3 Mainland Office Building 89 100.0% 1,603 9,864 9,651 7/20/2015 2013 117. 1751 Blue Hills Drive Roanoke VA 1 Mainland Industrial Building 399 100.0% 1,874 23,760 22,922 1/29/2015 2003 118. Orbital Sciences Campus Sterling VA 3 Mainland Office Building 337 100.0% 10,359 72,165 66,200 11/29/2012 2000 119. 181 Battaile Drive Winchester VA 1 Mainland Industrial Building 308 100.0% 1,456 14,341 10,978 4/20/2006 1987 120. 351, 401, 501 Elliott Ave West Seattle WA 3 Mainland Office Building 300 100.0% 12,983 129,496 125,563 1/29/2015 2000 361 44,763 96.8% 451,609$ 4,136,571$ 3,913,589$ 2004