SIS Bancorp Glastonbury Bank and Trust Special Note Regarding Forward-Looking Information This presentation contains forward-looking statements (within the meaning of the Private Securities Litigation Reform Act of 1995), including estimates of future operating results, financial condition and cost savings, which involve significant risks and uncertainties. Actual results may differ materially from the results discussed in these forward-looking statements. Factors that might cause such differences include, but are not limited to, economic conditions and real estate risks, interest rate risks, operational issues, competitive conditions, changes in applicable law and regulations and other risks detailed from time to time in the Company's SEC reports, including those discussed in the Company's Current Report on Form 8-K dated August 18, 1997, as filed with the Securities and Exchange Commission, to which report reference is hereby made. Transaction Rationale * Natural strategic extension into a contiguous market. * Expands SISB community banking franchise into attractive Connecticut banking market. * Continued emphasis on community banking strategy. * Financially compelling transaction. * Accretive to EPS in first full year (1998) excluding revenue enhancement opportunities. * Pricing is consistent with other transactions in New England. * Internal rate of return of approximately 15%. * Diversifies revenue stream. * GLBT is a commercial bank. * Entry into new fee-based business lines: merchant processing and insurance. * Leverage SISB's existing infrastructure. 2 Transaction Summary Terms: Purchase price to be paid in tax free exchange of stock. Exchange rate fixed at 0.74, resulting in the issuance of 1,354,141 shares of SISB common stock. Walk away option if SISB stock price falls below $25.00, subject to cure. Accounting: Pooling of interests. Pricing: Based on SISB Closing Stock Price as of August 15, 1997 of $30.00: Purchase price $40.6 million Purchase price per share $22.20 Price/book value and tangible book value 2.26x Price/annualized six months ended June 30, 1997 EPS 16.3x Core deposit premium 11% Structure: Glastonbury Bank & Trust to be wholly owned subsidiary of SIS Bancorp. Timing: Subject to normal regulatory and SISB and GLBT shareholder approval. Targeted to close fourth quarter 1997. Impact: Accretive to earnings in first full year, 1998, assuming 20% cost savings. Pro Forma Share SISB 5,576,842 (1) 80% Ownership: GLBT 1,354,141 20% --------- --- 6,930,983 100% (1) Actual shares outstanding 3 Entry Vehicle Into Connecticut Market [GRAPHIC OMITTED] The omitted graphic is a map showing the locations of certain SISB and Glastonbury branches. SISB branches (12) are represented by black circles; Glastonbury branches (6) are represented by grey squares. * Hartford County, Connecticut is a natural contiguous extension to SISB's core Massachusetts markets of Hampden and Hampshire counties. * Establishes a Connecticut franchise with critical mass and opportunity to expand market share: * $216 million of deposits * 8 full service offices * 17,549 customer accounts Deposits (1) CT County Branches ($000) --------- -------- -------- Hartford, CT 6 $178,910 Middlesex, CT 1 $ 15,271 New London, CT 1 $ 22,413 - -------- 8 $216,594 (1) Deposit totals for GLBT as of June 30, 1997. 4 Connecticut Market * Branches are in demographically attractive and affluent banking markets: Hartford County, CT ------------------------ Glastonbury Wethersfield East Hartford, CT CT CT Population 27,901 25,651 50,452 Households 10,553 10,470 20,343 1996 Average Household Income $62,845 $63,233 $46,422 Projected 2001 Avg. Household Income $69,375 $71,226 $51,222 Source: 1990 U.S. Census Data; SNL Securities, L.C. 5 Pro Forma Balance Sheet and Asset Quality (Dollars in Millions) At June 30, 1997 Pro Forma SISB GLBT Combined ---- ---- --------- Assets Cash and Investment Securities $ 733 $ 95 $ 828 Net Loans 646 153 799 Other Assets 56 13 69 ------ ------ ------ Total Assets $1,435 $ 261 $1,696 Liabilities and Equity Total Deposits $1,015 $ 217 $1,232 Other Liabilities 316 26 343 Total Equity 103 18 121 ------ ------ ------ Total Liabilities and Equity $1,435 $ 261 $1,696 Asset Quality NPA/Total Assets 0.47% 1.04% 0.56% LLR/NPLs 272% 197% 255% LLR/Total Loans 2.48% 2.20% 2.43% Capital Ratios Equity/Assets 7.20% 6.87% 7.15% Fully Diluted Shares Outstanding 5,640,349 1,829,920 6,994,490 Book Value Per Share $18.31 $9.82 $17.33 Book Value Dilution (1) (7.00%) (1) Book value dilution including after-tax merger expenses of $1.8 million. 6 Pro Forma Loan Portfolio and Deposit Base (Dollars in Millions) At June 30, 1997 Pro Forma % of Loan Portfolio SISB GLBT Combined Total - -------------- ---- ---- -------- ----- Residential Mortgage Loans $238.4 $ 53.6 $292.0 36% Commercial & Construction Mortgage Loans 120.2 56.3 176.5 22% Commercial Loans 173.6 25.1 198.7 24% Home Equity and Consumer Loans 128.2 21.2 149.4 18% Other -- 0.2 0.2 0% ------ ------ ------ --- Total Loan Portfolio $660.4 $156.4 $816.8 100% Loan Loss Reserve (16.3) (3.5) (19.8) Deferred Fees, Gains/Unearned Premium 1.8 0.0 1.8 ------ ------ ------ Net Loans $645.9 $152.9 $798.8 Deposits Demand $120.6 $ 39.8 $160.4 13% NOW 60.3 22.4 82.7 7% Savings and Money Market 411.4 59.7 471.2 38% CDs under $100,000 364.5 83.8 447.9 36% CDs over $100,000 58.5 11.3 69.8 6% -------- ------ -------- --- Total Deposits $1,015.4 $216.6 $1,232.0 100% 7 Comparative Earnings Data (Dollars in Millions) Six Months Ended June 30, 1997 SISB GLBT --------------- --------------- Net Interest Income $ 25.0 $ 5.0 Provision for Possible Loan Losses (0.8) (0.1) Non-interest Income 5.6 1.6 Non-interest Expense (20.2) (4.5) ------ ------ Net Income Before Taxes 9.6 2.0 Tax (Expense)/Benefit (3.8) (0.8) ------ ------ Net Income $ 5.8 $ 1.2 ====== ====== Fully Diluted Earnings Per Share $ 1.02 $ 0.68 NIM 3.84% 4.25% ROAA 0.83% 0.97% ROAE 11.45% 14.18% 8 Reasonable Expense Reductions 1998 ---- Administrative & Back Office Expenses: Pre-Tax $1.8 million After-Tax (1) $1.1 million As a % of GLBT Pre-Tax Expense Base 20% As a % of SISB Pre-Tax Expense Base 4% (1) 40% tax rate. 9 Estimated Pro Forma Earnings (Dollars in Millions, Except Per Share Amounts) Total Per Share Total Per Share ----- --------- ----- --------- Net Income on a Stand Alone Basis: SIS (1) $11.9 $ 2.12 $13.5 $ 2.39 GLBT (1 $ 2.5 $ 1.36 $ 2.7 $ 1.46 ----- ----- $14.4 $16.1 After-tax Adjustments: Expense Reductions $ 0.0 $ 1.1 Merger Expenses ($1.8) $ 0.0 ----- ----- Total Net Income $12.9 $ 1.81 $17.2 $ 2.46 Total Net Income Excluding Merger Expenses $14.4 $ 2.07 Accretion/(Dilution) Total Net Income 3% Net Income Excluding Merger Expenses (2%) Pro Forma Fully Diluted Shares 6,994,490 6,994,490 <FN> (1) SISB 1997/1998 earnings are based on consensus "Wall Street" estimates of $2.12 and $2.39, per share, respectively. GLBT 1997/1998 earnings are presented for illustrative purposes only. GLBT 1997 earnings reflect six months ended June 30, 1997 net income of $1.2 million annualized. GLBT 1998 earnings grow approximately 8% from 1997 earnings. This information constitutes "forward-looking information". See special note on cover page. </FN> 10 Sources of Potential Revenue Enhancements * SISB's strategy of convenience and value introduced to a broader base of consumer households. * Cross-selling opportunities of GLBT's merchant processing and insurance lines of business. * More consumer cross-selling opportunities - Average GLBT customer has 1.65 products vs. 3.81 average for SISB customers. * Increased commercial lending capacity and product array, including cash management. 11 Summary * Provides meaningful entry into an attractive Connecticut banking market. * Earnings accretion in first full year without factoring in revenue enhancement. * Significant franchise enhancement. 12 Appendix - Glastonbury Bank & Trust Co. Historical Financial Data Balance Sheet and Asset Quality Data (Dollars in Millions) At June 30, At December 31, 1997 1996 1995 1994 1993 1992 ----- ---- ---- ---- ----- ---- Balance Sheet Assets $261.3 $248.6 $229.8 $218.3 $229.0 $238.5 Total Loans, Net of Unearned 156.4 148.7 142.0 130.8 147.7 164.7 Loan Loss Reserve (3.4) (3.4) (3.0) (4.5) (4.7) (4.6) Loans, Net of Unearned & LLR $152.9 $145.4 $138.9 $126.3 $137.8 $156.5 REO 1.0 1.2 0.3 1.8 4.2 6.5 Deposits 216.6 208.4 190.3 194.4 202.4 218.4 Equity 18.0 16.9 15.0 8.0 11.1 13.8 Equity/Assets 6.87% 6.79% 6.52% 3.68% 4.83% 5.78% Asset Quality Non-Performing Loans $1.7 $1.5 $0.7 $3.9 $5.5 $3.4 NPLs/Total Loans 1.12% 0.98% 0.52% 3.01% 3.75% 2.03% NPA/(Loans & REO) 1.73% 1.75% 0.74% 4.30% 6.41% 7.89% LLR/NPLs 197.37% 228.96% 413.23% 114.56% 85.58% 68.59% LLR/Total Loans 2.20% 2.25% 2.13% 3.45% 3.21% 2.86% 13 Appendix - Glastonbury Bank & Trust Co. Historical Financial Data (Dollars in Millions) Income Statement and Profitability Data Six Months Ended Year Ended December 31, June 30, 1997 1996 1995 1994 1993 1992 Income Statement Net Interest Income $ 5.0 $ 9.7 $ 9.6 $ 9.5 $ 9.7 $ 10.1 Provision for Possible Loan Losses (0.1) (0.7) 0.2 (1.9) (3.8) (3.6) Non-interest Income 1.6 3.2 3.1 4.0 4.0 3.7 Non-interest Expense (4.5) (10.5) (10.2) (11.2) (12.6) (10.9) ------ ------ ------ ------- ------- ------- Net Income Before Taxes 2.0 1.8 2.7 0.4 (2.6) (0.7) Tax (Provision)/Benefit (0.8) 0.7 0.5 -- 0.1 0.1 ------ ------ ------ ------- ------- ------- Net Income before Nonrecurring Exp. 1.2 2.5 3.2 (0.4) (2.7) (0.8) Nonrecurring Expense 0.0 (0.0) (1.6) (1.4) 0.0 0.0 ------ ------ ------ ------- ------- ------- Net Income $ 1.2 $ 2.5 $ 1.6 ($ 0.9) ($ 2.7) ($ 0.8) Profitability (1) ROAA 0.97% 1.08% 0.75% (0.39%) (1.15%) (0.35%) ROAE 14.18% 16.29% 16.29% (8.05%) (18.68%) (5.10%) Efficiency Ratio 68.18% 81.40% 80.31% 82.96% 91.97% 78.99% Net Interest Margin 4.25% 4.46% 4.74% 4.69% 4.66% 5.00% <FN> (1) Six months ended June 30, 1997 annualized. </FN> 14