Create Your Balance NASDAQ Global Select Market: UBNK First Quarter 2019 Earnings

Forward Looking Statements This Presentation contains forward-looking statements that are within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements are based upon the current beliefs and expectations of our management and are subject to significant risks and uncertainties. These risks and uncertainties could cause our results to differ materially from those set forth in such forward-looking statements. Forward-looking statements can be identified by the fact that they do not relate strictly to historical or current facts. Words such as “believes,” “anticipates,” “expects,” “intends,” “plans,” “estimates,” “targeted” and similar expressions, and future or conditional verbs, such as “will,” “would,” “should,” “could” or “may” are intended to identify forward-looking statements but are not the only means to identify these statements. Forward-looking statements involve risks and uncertainties. Actual conditions, events or results may differ materially from those contemplated by a forward-looking statement. Factors that could cause this difference — many of which are beyond our control — include without limitation the following: Any forward-looking statements made by or on behalf of us in this Presentation speak only as of the date of this Presentation. We do not undertake to update forward-looking statements to reflect the impact of circumstances or events that arise after the date the forward-looking statement was made. The reader should; however, consult any further disclosures of a forward-looking nature we may make in future filings. NON-GAAP FINANCIAL MEASURES This Presentation contains certain non-GAAP financial measures in addition to results presented in accordance with Generally Accepted Accounting Principles (“GAAP”). These non-GAAP measures provide supplemental perspectives on operating results, performance trends, and financial condition. They are not a substitute for GAAP measures; they should be read and used in conjunction with the Company’s GAAP financial information. These non-GAAP financial measures provide information for investors to effectively analyze financial trends of our business activities, and to enhance comparability with peers across the financial services sector. NASDAQ: UBNK 2

Corporate Contacts William H. W. Crawford, IV Chief Executive Officer and President Eric R. Newell, CFA Executive Vice President, Chief Financial Officer 860-291-3722 or ENewell@bankatunited.com Investor Information: Marliese L. Shaw Executive Vice President, Corporate Secretary/Investor Relations Officer 860-291-3622 or MShaw@bankatunited.com NASDAQ: UBNK 3

Table of Contents Page Branch Network 5 Market Opportunities 6 Management Team and Ownership 7 Four Key Objectives 8 Consumer Banking 9 Wholesale Banking 10 Wholesale Banking Overview 11 Financial Highlights 12 NASDAQ: UBNK 4

Branch Network 3rd largest public bank headquartered in CT with $7.34 billion in assets 59 branches concentrated in Central CT and Western MA #3 market share in combined Hartford / Springfield MSA $92 million in average deposits per branch (6/30/18 Branch level reporting; Source: FDIC Summary of Deposits Report) NASDAQ: UBNK 5

Market Opportunities • United Bank operates in attractive markets with significant wealth and customer base • New Haven and Fairfield County provide growth opportunities • The Bank’s main operational markets have significant wealth Population Markets Population 35-54 Average HHI Median Age Hartford MSA 1,208,776 306,176 106,072 41 Springfield MSA 632,910 147,518 81,002 39 Main Operational Markets Worcester MSA 948,257 246,610 100,309 41 New Haven County 859,504 216,819 97,217 41 Opportunity Markets Fairfield County 953,173 253,644 147,219 40 Total 4,602,620 1,170,767 107,878 40 *Total Average Household Income (HHI) weighted by households and Age weighted by population NOTE: Data sourced from SNL analysis as of April 2019 NASDAQ: UBNK 6

Management Team and Ownership Years in Industry/ Name Title/Function Years at United Prior Experience Wells Fargo Bank, Wachovia Bank, William H.W. Crawford, IV Chief Executive Officer & President 30/8 SouthTrust Bank Eric R. Newell Chief Financial Officer 15/8 FDIC, Fitch Ratings, Alliance Bernstein Craig W. Hurty Chief Human Resources Officer 35/5 Aetna, PacifiCare Health Systems National Westminster Bank, Liberty Bank, Mark A. Kucia Chief Credit Officer 31/13 Mechanics Bank, BayBank H&R Block Bank, Chevy Chase Federal Brandon C. Lorey Head of Consumer Banking 28/6 Savings Bank David C. Paulson Head of Wholesale Banking 33/5 Santander, Wells Fargo, Wachovia Chief Information & CIT Group, NYCE Corporation, Summit John J. Smith Administrative Officer 33/3 Bank Elizabeth Wynnick Chief Risk Officer 27/7 NewAlliance Bank, Webster Bank • William H.W. Crawford, IV owns 385,155 shares of stock and options* • UBNK management owns 983,034 shares of stock and options* • UBNK Non-Executive Officer Directors own 481,100 shares of stock and options* *Note: 401k/ESOP share ownership is as of 12/31/18. NASDAQ: UBNK 7

Four Key Objectives Objective Progress Align earning asset growth with organic capital and low (a) YoY total deposit growth of 7.2% vs. 6.5% for total 1. cost core deposit generation to maintain strong capital loans; (b) YoY non-interest bearing deposit growth of and liquidity 3.2%; (c) YoY capital growth of 4.5%. Re-Mix cash flows into better yielding risk adjusted 2. return on assets with lower funding costs relative to (a) Continued discipline with RAROC model; (b) peers. Continued focus on C&I, up 8.7% YoY. Invest in people, systems, and technology to grow 3. revenue and improve customer experience while (a) Annualized NIE/AA of 2.13% in 1Q19; (b) Focus on maintaining attractive cost structure. leveraging recent investments Grow operating revenue, maximize operating earnings, (a) TBV/share increased 4.7% YOY; (b) annualized 4. grow tangible book value, pay dividend. Achieve more dividend yield of 3.2%. revenue into NII and core fee income. NASDAQ: UBNK 8

Consumer Banking Diverse products designed to meet the needs of our consumer customers. Consumer Loan Detail as of 3/31/2019 Retail and Small Business Banking team focused on gaining new customer relationships and deposit growth Other • Mortgage Sales team originated $31.9 million of consumer residential mortgage loans in Q1 2019. Participate in 18% secondary market sales. • Consumer Lending team who utilize the branch network to acquire profitable customer relationships Home equity 25% with growth in Home Equity and lines of credit. Residential 56% • United Wealth Management serving over 50 banking Construction 1% offices with investment services offerings. Demonstrating strong growth each quarter. • Internationally experienced LH-finance Marine ($2.35 Bn, or 41% of loans) division. NASDAQ: UBNK 9

Wholesale Banking Robust offering of products to support commercial Commercial Loan Detail as of 3/31/2019 customer needs and provide competitive advantage. • Diverse and experienced Commercial Banking team: Commercial Lending team provides geographic diversity and multiple areas of C&I industry expertise. • Cash Management and Municipal Banking team C&I 27% focused on deposit gathering and growing strategically important relationships. • Commercial Real Estate activities largely focused on growing Owner-Occupied CRE portfolio, while Investor Investor CRE 57% Owner-Occupied CRE CRE has remained essentially flat for four quarters. 13% Regional CRE program provides geographic diversity in Construction 3% strong markets throughout the Northeast and Mid Atlantic. • Business Banking team focused on growing C&I loans and core deposits. ($3.39 Bn, or 59% of loans) NASDAQ: UBNK 10

Wholesale Banking Overview • Asset quality remains exceptional through diversification, granularity, that is accretive to risk adjusted capital Investor CRE & ADC by Property Type C&I & Owner Occupied CRE by Industry $2,027 Million $1,360 Million NASDAQ: UBNK 11

Financial Highlights NASDAQ: UBNK 12

First Quarter Walk (Dollars in thousands) GAAP Net Income QTD GAAP Net Income LTM Actual Beginning Balance $ 12,165 $ 15,787 Loan Income 1,537 9,984 Investment Income (546) (264) Interest Expense (2,416) (9,326) Net Interest Income (1,425) 394 Provision 575 (104) Net Interest Income after Provision (850) 290 Service Charges and Fees (1,262) 26 Security Gains/Losses 712 621 Bank-owned Life Insurance Income 429 300 Mortgage Banking (107) (1,138) Gains/Losses on Limited Partnerships (198) (13) Other (87) (105) Non-Interest Income (513) (309) Salaries and Benefits 3,139 (1,004) Service Bureau Fees 272 181 Occupancy Expense 844 (591) Professional Fees (157) (129) Marketing 250 (173) FDIC (48) 80 Other 231 (815) Non-Interest Expense 4,531 (2,451) Taxes (2,676) (660) Total Change 492 (3,130) Actual Ending Balance $ 12,657 $ 12,657 NASDAQ: UBNK 13

Tangible Book Value and Dividend Return NASDAQ: UBNK 14

Swap and Mortgage Contribution to Total Revenue NASDAQ: UBNK 15

Forecast Actual Actual Actual Forecast Q1 2019 Q4 2018 FY 2018 FY 2019 Tax Equivalent Net Interest Margin 2.81% 2.90% 2.92% 2.80-2.85%^ Loan Growth 5.3%* 9.3%* 5.9% 4.0-6.0% Provision / Average Gross Loans 0.14%* 0.19%* 0.16% 0.16% - 0.18% Non-Interest Income $9.0 million $9.5 million $36.7 million $36 - 38 million Non-Interest Expense $39.2 million $43.7 million $157.8 million $154 - 156 million Effective Tax Rate (YTD) 13.8% 2.6% 2.6% 14-16% Average Diluted Shares (000's) 50,907 50,970 51,012 51,200 *Note: Loan Growth, Provision/Average Gross Loans are annualized, unless noted. ^5bp decline effective Jan 1, 2019 related to amortization of municipal securities due to ASU 2017-08 Subtopic 310-20 NASDAQ: UBNK 16

Investment in D.C. Solar Tax-Advantaged Funds • The Company invests, as a limited liability member, in Solar Eclipse Investment Fund X, LLC, Solar Eclipse Investment Fund XV, LLC, and Solar Eclipse Investment Fund XXII, LLC., all of which are borrowers of and lessees to D.C Solar Solutions, Inc. and D.C Solar Distribution, Inc., respectively. The funds generate solar investment tax credits for the Company. • Loss considerations relate to recent bankruptcy filings by D.C. Solar Solutions, Inc. and D.C. Solar Distribution, Inc. and fraud allegations brought against the companies. United Financial Bancorp, Actual Actual Estimated^ Proforma* United Bank Estimated^ Proforma* Inc. 12/31/18 12/31/18 Tangible Common Equity to 8.15% 8.34% 7.80% Tier 1 Capital Ratio 10.95% 10.81% 10.72% Tangible Assets Total Capital to Risk Weighted Tier 1 Capital Ratio 10.40% 10.36% 9.76% Assets Ratio 11.87% 11.75% 11.66% Total Capital to Risk Weighted 12.60% 12.57% 11.97% Assets Ratio Tier 1 to Total Average Assets Ratio 8.99% 8.75% 8.68% Tier 1 to Total Average Assets 8.43% 8.27% 7.79% Ratio * At this time, no measurable loss has been estimated but the Company believes a loss is more likely than not. The proforma ratios above are illustrative and contemplate impact on capital if a complete loss ($41.7 million at the consolidated level and $11.8 million at the bank level) on the LLC investments. This total exposure does not include litigation exposure, potential costs, penalties, interest or recoveries. ^Note: Presented as estimates for March 31, 2019, within a range of +/- 5 bps. NASDAQ: UBNK 17

Select Financial Data Q1 2019 Q4 2018 Q3 2018 Q2 2018 Q1 2018 Tangible Common Equity ("TCE") $601.8 million $589.7 million $591.0 million $582.7 million $573.6 million Total Capital to Risk Weighted Assets Ratio^ 12.57% 12.60% 12.91% 12.80% 12.72% Tier 1 to Total Average Assets Ratio^ 8.27% 8.43% 8.52% 8.46% 8.32% Dividend Payout Ratio 48.0% 50.0% 37.5% 38.7% 38.7% Annualized Dividend Yield* 3.2% 3.0% 2.7% 2.8% 2.9% Buy Back Activity (shares) N/A 239,000 N/A N/A 94,900 Buy Back Activity (average stock price) N/A $15.09 N/A N/A $16.35 Remaining Authorization (shares) 834,636 834,636 1,073,636 1,073,636 1,073,636 ^Note: Presented as estimates for March 31, 2019 and actual for remaining periods *Note: Dividend yield is calculated using the average closing stock price during the quarter NASDAQ: UBNK 18

NIE/Average Assets/FTE Employees 900 774 770 761 800 3.5% 718 683 697 700 600 2.5% 500 2.13% 342 400 300 1.5% 200 100 0.5% 0 2013Y 2014Y 2015Y 2016Y 2017Y 2018Y 2019Q1* Period Ending NIE/AA Employees *NIE/Average Assets calculation is annualized. NASDAQ: UBNK 19

Balance Sheet Trends QoQ YoY 1Q19 vs 4Q18 1Q19 vs 1Q18 Balance Sheet ($ in thousands) 1Q2019 4Q2018 3Q2018 2Q2018 1Q2018 $ Change % $ Change % ASSETS Cash and cash equivalents $ 155,173 $ 97,964 $ 78,595 $ 109,175 $ 69,242 $ 57,209 58.4 % $ 85,931 124.1% Securities 848,541 973,347 972,035 1,006,135 1,031,277 (124,806) (12.8) (182,736) (17.7) Loans held for sale 16,172 78,788 86,948 85,458 63,394 (62,616) (79.5) (47,222) (74.5) Residential real estate 1,322,423 1,313,373 1,283,126 1,252,001 1,235,197 9,050 0.7 87,226 7.1 Home equity 583,368 583,454 579,907 588,638 582,285 (86) — 1,083 0.2 Other consumer 425,854 410,249 369,781 332,402 310,439 15,605 3.8 115,415 37.2 Residential construction 13,620 20,632 32,750 32,063 37,579 (7,012) (34.0) (23,959) (63.8) Investor non-occupied CRE 1,932,137 1,911,070 1,888,848 1,927,960 1,842,898 21,067 1.1 89,239 4.8 Owner occupied CRE 439,366 443,398 434,906 418,338 442,938 (4,032) (0.9) (3,572) (0.8) Commercial business 920,165 886,770 861,030 841,142 846,182 33,395 3.8 73,983 8.7 Commercial construction (ADC) 94,649 87,493 78,235 82,883 84,717 7,156 8.2 9,932 11.7 Loans - net 5,697,442 5,622,589 5,495,277 5,441,766 5,349,044 74,853 1.3 348,398 6.5 Deferred tax asset, net 27,600 32,706 31,473 30,190 28,710 (5,106) (15.6) (1,110) (3.9) Premises and equipment, net 63,863 68,657 67,612 67,614 67,619 (4,794) (7.0) (3,756) (5.6) Operating lease right-of-use assets 44,377 — — — — 44,377 — 44,377 — Financing lease right-of-use assets 4,356 — — — — 4,356 — 4,356 — Intangible Assets 122,334 122,796 118,842 119,130 119,435 (462) (0.4) 2,899 2.4 Cash surrender value of BOLI 194,496 193,429 181,928 180,490 179,556 1,067 0.6 14,940 8.3 Other Assets* 165,586 166,598 174,788 168,638 160,397 (1,012) (0.6) 5,189 3.2 Total Assets $7,339,940 $7,356,874 $ 7,207,498 $7,208,596 $ 7,068,674 $ (16,934) (0.2)% $ 271,266 3.8% LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities: QoQ YoY Deposits: 1Q19 vs 4Q18 1Q19 vs 1Q18 Non-interest-bearing $ 777,969 $ 799,785 $ 759,210 $ 770,982 $ 753,575 $ (21,816) (2.7)% $ 24,394 3.2% Interest-bearing 4,886,283 4,870,814 4,741,153 4,622,394 4,528,935 15,469 0.3 357,348 7.9 Total Deposits 5,664,252 5,670,599 5,500,363 5,393,376 5,282,510 (6,347) (0.1) 381,742 7.2 Mortgagors' and investor escrow accounts 11,510 4,685 9,597 14,526 11,096 6,825 145.7 414 3.7 FHLB advances and other borrowing 826,668 899,626 926,592 1,041,896 1,030,735 (72,958) (8.1) (204,067) (19.8) Operating lease liabilities 56,265 — — — — 56,265 — 56,265 — Financing lease liabilities 4,585 — — — — 4,585 — 4,585 — Accrued expenses and other liabilities 52,562 69,446 61,128 56,921 51,333 (16,884) (24.3) 1,229 2.4 Total liabilities 6,615,842 6,644,356 6,497,680 6,506,719 6,375,674 (28,514) (0.4) 240,168 3.8 Total stockholders' equity 724,098 712,518 709,818 701,877 693,000 11,580 1.6 31,098 4.5 Total liabilities and stockholders' equity $7,339,940 $7,356,874 $ 7,207,498 $7,208,596 $ 7,068,674 $ (16,934) (0.2)% $ 271,266 3.8% *Other assets include FHLBB stock (at cost), accrued interest receivable, in addition to other assets NASDAQ: UBNK 20

Investment Portfolio Portfolio Stats ($ in millions) 2019 Q1 2018 Q4 Investment Portfolio Summary (Total) March 31, 2019 Average balance $ 967 $ 968 Yield 3.23% 3.53% Corp Debt Average Rating AA AA+ 11% Actual MBS Portfolio $ 508 $ 551 Agency MBS 24% Agency CMO Total Portfolio Duration (years) 3.4 3.8 15% Summary of Quarterly Securities 2019 Q1 2018 Q4 Purchases Muni Agency CCMO Average Yield 3.97% 3.58% 10% Average Rating AA- AA- 18% CLO Agency CMBS 19% 3% Total Securities/Assets (%) 25.0 17.5 20.0 17.0 16.3 16.0 16.3 15.8 15.5 15.0 14.6 14.0 13.5 13.2 15.0 11.6 10.0 5.0 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 16 16 16 16 17 17 17 17 18 18 18 18 19 20 20 20 20 20 20 20 20 20 20 20 20 20 NASDAQ: UBNK 21

Asset Quality ($ in thousands, except percentage data) 2019Q1 2018Q4 2018Q3 2018Q2 2018Q1 Non-accrual loans $ 23,720 $ 23,706 $ 20,506 $ 22,087 $ 23,436 TDR - non-accruing 5,479 6,971 6,706 7,330 8,308 Total non-performing loans 29,199 30,677 27,212 29,417 31,744 OREO 1,429 1,389 1,808 1,855 1,935 Total non-performing assets $ 30,628 $ 32,066 $ 29,020 $ 31,272 $ 33,679 NPLs to total loans 0.51% 0.54% 0.49% 0.54% 0.59% NPAs to total assets 0.42% 0.44% 0.40% 0.43% 0.48% Net charge offs $ 1,638 $ 891 $ 1,261 $ 1,102 $ 1,123 Annualized NCOs to average loans 0.11% 0.06% 0.09% 0.08% 0.08% Allowance for loan losses to non-performing loans 178.23% 168.32% 183.41% 167.12% 150.94% Allowance for loan losses to total loans 0.91% 0.91% 0.90% 0.90% 0.89% Provision for loan losses (annualized)/Average Loans 0.14% 0.19% 0.14% 0.17% 0.14% NASDAQ: UBNK 22

Commercial Real Estate CRE / Risk- 3-Year Ratio Construction / 3-Year Ratio Institution Name City State Ticker Based Capital Delta Risk-Based Delta Capital United Financial Bancorp, Inc. Hartford CT UBNK 285% (21)% 22% (4)% People's United Financial, Inc. Bridgeport CT PBCT 238% (39)% 20% (9)% Webster Financial Corporation Waterbury CT WBS 163% 13% 16% (4)% Berkshire Hills Bancorp, Inc. Pittsfield MA BHLB 238% 11% 34% (10)% Independent Bank Corp. Rockland MA INDB 290% (10)% 52% (12)% Brookline Bancorp, Inc. Boston MA BRKL 348% 2% 22% 1% Century Bancorp, Inc. Medford MA CNBKA 29% (3)% 4% (1)% Washington Trust Bancorp, Inc. Westerly RI WASH 312% (5)% 47% 6% Meridian Bancorp, Inc. Peabody MA EBSB 649% 215% 111% 15% Camden National Corporation Camden ME CAC 250% 61% 29% 3% Enterprise Bancorp, Inc. Lowell MA EBTC 261% (10)% 80% (21)% Community Bank System, Inc. De Witt NY CBU 103% 25% 20% 4% NBT Bancorp Inc. Norwich NY NBTB 170% 11% 23% (6)% Sterling Bancorp Montebello NY STL 282% —% 8% (8)% High 649% 215% 111% 15% Low 29% (39)% 4% (21)% Mean 256% 21% 36% (3)% Median 250% 2% 23% (4)% UBNK Ranking out of 14 (ascending): 10 2 7 7 NOTE: All financial data as of December 31, 2018 CRE includes 1.a.1, 1.a.2, 1.b, 1.d, and 1.e.2 from RC-C Part 1 FFIEC 041 Data is Bank-level; BRKL subsidiaries aggregated Ratio deltas represent change in ratio over 3-year period All data sourced from S & P Global Market Intelligence NASDAQ: UBNK 23

Loan and Deposit Composition Loan Composition at March 31, 2019 Loan Composition at March 31, 2018 Loan Composition at March 31, 2017 Other Consumer: 7% Other Consumer: 5% Resi Construction: 1% Resi Construction: 1% OOCRE: 8% Resi Construction: 1% Other Consumer: 6% OOCRE: 8% Home Equity: 10% OOCRE: 9% Home Equity: 10% Home Equity: 11% Investor CRE: Investor CRE: Investor CRE: 33% Residential: 24% Residential: 23% 33% 33% Residential: 23% C&I: 16% C&I: 16% C&I: 16% Comm Construction: Comm Construction: 2% Comm Construction: 2% 2% Total Loans at 03/31/19: $5.72 billion Total Loans at 03/31/18: $5.38 billion Total Loans at 03/31/17: $4.94 billion Deposit Composition at March 31, 2019 Deposit Composition at March 31, 2018 Deposit Composition at March 31, 2017 Demand & Demand & Time Demand & Time NOW: 26% Time Deposits: 32% NOW: 30% NOW: 30% Deposits: 34% Deposits: 34% Regular Savings: 11% Regular Savings: Regular Savings: 9% Money Market: Money Market: 26% 10% Money Market: 29% 29% Total Deposits at 03/31/19: $5.66 billion Total Deposits at 03/31/18: $5.28 billion Total Deposits at 03/31/17: $4.79 billion NASDAQ: UBNK 24

Diversified Deposit Funding Sources Non-Interest Bearing Deposit Growth Trend Transaction Account Growth Trend $5.66 B $5.67 B $5.66 B $5.67 B $5.20 B $5.20 B $4.71 B 799,785 777,969 $4.71B 1,653,574 1,692,713 $4.44B 778,576 $4.44 B 708,050 1,573,404 657,718 1,019,161 1,206,722 4,419,645 4,870,814 4,886,283 3,779,353 4,003,122 3,417,910 3,504,450 3,624,817 4,017,025 3,971,539 15 16 17 18 19 15 16 17 18 19 20 20 20 20 20 20 20 20 20 20 Q1 Q1 Non-Interest Bearing CAGR: 5%, Interest Bearing CAGR: 8% Transaction CAGR: 17%, Non-Transaction CAGR: 5% Interest Bearing Non-Interest Bearing Non-Transaction Accounts Transaction Accounts Deposit Composition at 03/31/2019 Deposit Composition at 03/31/2018 Checking: Checking: 30% 30% CD: 32% CD: 34% Savings: 9% Savings: 10% Retail Retail MMDA: Business MMDA: 16% Business MMDA: 13% 13% MMDA: 13% NASDAQ: UBNK 25

Non-GAAP Reconciliation Three Months Ended March 31, December 31, September 30, June 30, March 31, 2019 2018 2018 2018 2018 Net Income (GAAP) $ 12,657 $ 12,165 $ 16,308 $ 15,646 $ 15,787 Non-GAAP adjustments: Non-interest income (1,158) (25) 58 (271) (342) Non-interest expense — 2,677 (129) 215 — Income tax benefit related to tax reform — (1,717) — — — Related income tax (benefit) expense 155 (557) 15 (93) 72 Net adjustment (1,003) 378 (56) (149) (270) Total non-GAAP net income $ 11,654 $ 12,543 $ 16,252 $ 15,497 $ 15,517 Net interest income (GAAP) $ 46,937 $ 48,362 $ 48,429 $ 48,181 $ 46,543 Non-interest income (GAAP) $ 8,980 $ 9,493 $ 9,555 $ 8,360 $ 9,289 Non-GAAP adjustments: Net (gain) loss on sales of securities (737) (25) 58 (62) (116) BOLI claim benefit (421) — — (209) (226) Net adjustment (1,158) (25) 58 (271) (342) Total non-GAAP non-interest income 7,822 9,468 9,613 8,089 8,947 Total non-GAAP net interest income 46,937 48,362 48,429 48,181 46,543 Total non-GAAP revenue $ 54,759 $ 57,830 $ 58,042 $ 56,270 $ 55,490 NASDAQ: UBNK 26

Non-GAAP Reconciliation (cont.) Three Months Ended March 31, December 31, September 30, June 30, March 31, 2019 2018 2018 2018 2018 Non-interest expense (GAAP) $ 39,187 $ 43,718 $ 38,943 $ 38,370 $ 36,736 Non-GAAP adjustments: Lease exit/disposal cost obligation — (466) 129 (215) — Effect of position eliminations — (2,211) — — — Net adjustment — (2,677) 129 (215) — Total non-GAAP non-interest expense $ 39,187 $ 41,041 $ 39,072 $ 38,155 $ 36,736 Total loans $ 5,731,582 $ 5,656,439 $ 5,528,583 $ 5,475,427 $ 5,382,235 Non-covered loans (1) (658,455) (675,112) (708,621) (729,947) (771,802) Total covered loans $ 5,073,127 $ 4,981,327 $ 4,819,962 $ 4,745,480 $ 4,610,433 Allowance for loan losses $ 52,041 $ 51,636 $ 49,909 $ 49,163 $ 47,915 Allowance for loan losses to total loans 0.91% 0.91% 0.90% 0.90% 0.89% Allowance for loan losses to total covered loans 1.03% 1.04% 1.04% 1.04% 1.04% (1) Represents acquired loans that were recorded at fair value. These loans carry no allowance for loan losses for the periods reflected above. NASDAQ: UBNK 27