UNITED BANKSHARES, INC. MERGER WITH FED ONE BANCORP, INC. This presentation contains certain forward looking statements with respect to the financial condition, results of operations and business of United Bankshares, Inc. and Fed One Bancorp, Inc. on a combined basis after the proposed merger. These forward looking statements involve certain risks and uncertainties. Factors that may cause actual results to differ materially from those contemplated by such forward looking statements include, among others, the following possibilities: (1) expected cost savings from the proposed merger cannot be fully realized or realized within the expected time frame; (2) costs or difficulties related to the integration of the businesses of United Bankshares, Inc. and Fed One Bancorp, Inc. are greater than expected; (3) revenues following the proposed merger are lower than expected: (4) competitive pressure among depository institutions increases significantly ; (5) changes in the interest rate environment reduce interest margins; (6) general economic conditions, either nationally or in the states in which the combined company will be doing business, are less favorable than expected; or (7) legislation or regulatory changes adversely affect the businesses in which the combined company would be engaged. 1 PRESENTATION OVERVIEW: |X| STRATEGIC IMPACT |X| FRANCHISE OVERVIEW |X| MARKET SHARE ANALYSIS |X| FED ONE OVERVIEW |X| COMBINED OPERATIONS |X| TRANSACTION STRUCTURE 2 STRATEGIC IMPACT |X| INCREASES UNITED'S ASSETS TO OVER $4.0 BILLION |X| REPRESENTS AN IN-MARKET TRANSACTION |X| INCREASES UNITED'S MARKET SHARE IN NORTHERN WEST VIRGINIA |X| REPRESENTS UNITED'S FIRST ENTRY INTO THE STATE OF OHIO |X| ADDS TO SHAREHOLDER VALUE 3 FRANCHISE OVERVIEW [Map showing 12 offices of Fed One Bancorp in West Virginia (9 offices) and Ohio (3 offices).] 4 MARKET SHARE ANALYSIS |X| COMBINATION OF FED ONE AND UNITED BANKSHARES RESULTS IN A 22% DEPOSIT MARKET SHARE IN THE NORTHERN PANHANDLE AND A 14% DEPOSIT MARKET SHARE IN THE MORGANTOWN MARKET. |X| MERGING WITH FED ONE WILL GIVE UNITED BANKSHARES A FOOTHOLD IN EASTERN OHIO. |X| POST-MERGER, UNITED BANKSHARES WILL BE OVER $4 BILLION IN TOTAL ASSETS. |X| AS AN IN-MARKET TRANSACTION, 73% OF FED ONE'S BRANCHES AND 75% OF FED ONE'S DEPOSITS ARE IN CURRENT UNITED MARKETS. 5 FED ONE OVERVIEW: |X| TOTAL ASSETS -- $367 MILLION |X| 12 FULL SERVICE OFFICES -- 9 IN WEST VIRGINIA; 3 IN OHIO |X| NPA'S/ASSETS = 0.36% |X| RESERVES/NPA'S(%)= 111.94% |X| RETURN ON AVERAGE ASSETS(%)= 0.92% |X| RETURN ON AVERAGE EQUITY(%) = 8.18% DATA AS OF/OR FOR THE 12 MONTHS ENDED 12/31/97 6 COMBINED OPERATIONS: UNITED COMBINED DOLLARS IN MILLIONS BANKSHARES(1) FED ONE COMPANY ---------- ------- ------- ASSETS $3,726 $367 $4,093 LOANS 2,607 166 2,773 DEPOSITS 2,925 259 3,184 SHAREHOLDERS' EQUITY 356 41 397 FULL SERVICE OFFICES 70 12 82 Data as of 12/31/97 (1) includes pro forma George Mason Bankshares, Inc. 7 TRANSACTION SUMMARY |X| CONSIDERATION: 0.75 UNITED SHARES FOR EACH FED ONE SHARE |X| TERMS: FIXED EXCHANGE RATIO TAX-FREE EXCHANGE 19.9% STOCK OPTION WALKAWAY - 20% BELOW INDEX |X| ACCOUNTING TREATMENT: POOLING OF INTERESTS |X| SHARES ISSUED: 1,892,386 |X| EXPECTED CLOSING: FOURTH QUARTER 1998 |X| IMPLIED MULTIPLES: 12/31/97 BOOK VALUE: 206% 1998 ESTIMATED EARNINGS: 24.31X 8 Transaction Structure |X| Financial Impact: - Total Assets to over $4 billion - Nondilutive on earnings per share in 1999 - Accretive to earnings in following years |X| Strategies for Earnings Enhancement: o Expense Saving: - Audit & legal fees - Insurance - Data Processing - Corporate overhead - Back room operations - Marketing - Director fees - Close duplicate offices - Regulatory fees o Revenue Enhancements: - Establish trust services - Redeploy earning assets at higher rates - Evaluate service charge structure - Expand cash management services |X| Fed One adds: o Strong branch network in good locations in northern West Virginia o First entry into the state of Ohio 9 EXPECTED COST SAVINGS Estimated Savings ----------- Personnel Expense $1,915,438 Professional Fees 337,489 Occuoancy Expense 706,665 Structural Expense 487,234 Other Expenses 583,356 ----------- Total Expense Savings $4,030,182 =========== 10