SECURITIES & EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D
                                 Amendment No. 3

                    Under the Securities Exchange Act of 1934

                              Service Bancorp, Inc.
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                                (Name of Issuer)

                                  Common Stock
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                         (Title of Class of Securities)

                                   81756X 10 3
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                                 (CUSIP Number)

 Kenneth R. Lehman, 1408 North Abingdon Street, Arlington, Virginia 703.812.5230
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                  (Name, address and telephone number of person
               authorized to receive notices and communications)

                                 August 18, 2004
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             (Date of event which requires filing of this statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box
[ ].

The information required in the remainder of this cover page shall not be deemed
to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934
("Act") or otherwise subject to the liabilities of that section of the Act but
shall be subject to all other provisions of the Act (however, see the Notes).
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1.   NAME OF REPORTING PERSONS:                       Kenneth R. Lehman and
                                                      Joan A. Lehman


     IRS IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY): NA

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2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

     (a) [X]
     (b) [ ]
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3.   FOR SEC USE ONLY

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4.   SOURCE OF FUNDS                                  PF, BK and OO

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5.   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS
     IS REQUIRED PURSUANT TO ITEM 2(d) OF 2(e)        [  ]
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CUSIP No. 81756X 10 3                                          Page 2 of 4 Pages


6. CITIZENSHIP                                                  USA

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NUMBER OF         (7)   SOLE VOTING POWER                       0
SHARES            --------------------------------------------------------------
BENEFICIALLY      (8)   SHARED VOTING POWER                     178,467
OWNED BY          --------------------------------------------------------------
EACH              (9)   SOLE DISPOSITIVE POWER                  0
REPORTING         --------------------------------------------------------------
PERSON WITH       (10)  SHARED DISPOSITIVE POWER                178,467

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11.  AGGREGATE AMOUNT BENEFICIALLY
     OWNED BY EACH REPORTING PERSON                             178,467

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12.  CHECK BOX IF THE AGGREGATE AMOUNT IN
     ROW (11) EXCLUDES CERTAIN SHARES                           [ ]

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13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     10.7%

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14. TYPE OF REPORTING PERSON                                    IN

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Item 1.     Security and Issuer

This statement relates to the common stock, par value $0.01 (the "Common Stock")
of Service Bancorp, Inc. (the "Company"). The Company's principal executive
offices are located at 81 Main Street, Medway, MA 02053

Item 2.     Identity and Background

(a)      This statement is filed by Kenneth R. Lehman and Joan Abercrombie
         Lehman (together, the "Reporting Persons"), spouses.

(b)      The address of the Reporting Persons is 1408 North Abingdon Street,
         Arlington, Virginia.

(c)      The Reporting Persons are private investors.

(d)      None of the Reporting Persons has, during the last five years, been
         convicted in a criminal proceeding (excluding traffic violations or
         similar misdemeanors).

(e)      None of the Reporting Persons has, during the last five years, been a
         party to a civil proceeding of a judicial or administrative body of
         competent jurisdiction and, as a result of such proceeding, was, or is
         subject to, a judgment, decree or final order enjoining future
         violations of, or prohibiting or mandating activities subject to,
         Federal or State securities laws or finding any violation with respect
         to such laws.


CUSIP No. 81756X 10 3                                          Page 3 of 4 Pages

(f)      The Reporting Persons are United States citizens.

Item 3.     Source and Amount of Funds and Other Consideration

The net investment cost (including commissions, if any) of the shares of Common
Stock identified herein is $2,784,708. The shares of Common Stock were purchased
by the Reporting Persons with personal funds, and with funds borrowed from
registered broker dealers on such firms' usual terms and conditions
(collateralized by margin securities). All or part of the shares of Common Stock
owned by the Reporting Persons may from time to time be pledged with one or more
banking institutions or, should the Common Stock qualify as margin securities in
the future, brokerage firms, as collateral for loans made by such bank(s) or
brokerage firm(s) to the Reporting Persons. Such loans from bank(s) will bear
interest at a rate based upon the prime rate from time to time in effect, and
any such loans from registered broker dealers will likely bear interest at a
rate based upon the broker's call rate from time to time in effect. Such
indebtedness may be refinanced with other banks or broker-dealers.

Item 4.     Purpose of the Transaction

The Reporting Persons do not have any specific plans or proposals that relate to
or would result in the Reporting Persons' acquisition or disposition of
securities of the issuer, although the Reporting Persons may purchase additional
shares of Common Stock from time to time as shares are available and market
conditions warrant. The purpose of the acquisition of the shares of Common Stock
reported herein by the Reporting Persons was for investment. The Reporting
Persons intend from time to time to engage in discussions with management
regarding the issuer's business and operations, management compensation, stock
benefit plans, composition of the board of directors and other corporate
governance matters. The Reporting Persons may make further purchases of shares
of Common Stock from time to time or dispose of any or all shares of Common
stock at any time. Other than as described above, the Reporting Persons do not
have any plans or proposals that relate to or would result in: (a) the
acquisition by any person of additional securities of the issuer, or the
disposition of securities of the issuer; (b) an extraordinary corporate
transaction, such as a merger, reorganization or liquidation, involving the
issuer or any of its subsidiaries; (c) a sale or transfer of a material amount
of assets of the issuer or any of its subsidiaries; (d) any change in the
present board of directors or management of the issuer, including any plans or
proposals to change the number or term of directors or to fill any existing
vacancies on the board; (e) any material change in the present capitalization or
dividend policy of the issuer; (f) any other material change in the issuer's
business or corporate structure; (g) changes in the issuer's charter, bylaws or
instruments corresponding thereto or other actions which may impede the
acquisition of control of the issuer by any person; (h) causing a class of
securities of the issuer to be delisted from a national securities exchange or
to cease to be authorized to be quoted in an inter-dealer quotation system of a
registered national securities association; (i) a class of equity securities of
the issuer becoming eligible for termination of registration pursuant to section
12(g)(4) of the Securities Exchange Act of 1934; or (j) any action similar to
any of those enumerated in (a) through (i) above. Each of the Reporting Persons
is likely from time to time to review or reconsider their intentions in holding
and/or acquiring shares of the issuer's Common Stock, and at such time may
formulate a plan or proposal that relates to or would result in one or more of
the matters referred to above in (b) through (j).

Item 5.     Interest in Securities of the Issuer

(a)      Aggregate number of shares beneficially owned by the Reporting Persons
         is 178,467, or 10.7% of the Company's outstanding shares. The
         percentages used herein and the rest of Item 5 assume that there are
         1,662,679 shares of Common Stock outstanding, based upon the Company's
         Quarterly Report on Form 10-Q for the quarter ended March 31, 2004.

(b)      Neither Reporting Person has sole power to vote, direct the vote of,
         dispose of, or direct the disposition of any shares of Common Stock.
         Each Reporting Person shares the power to vote, direct the vote of,
         dispose of, or direct the disposition of 178,467 shares of Common
         Stock.

(c)      The trading dates, number of shares of Common Stock purchased or sold
         and the price per share for all transactions by the Reporting Persons
         in the Common Stock within the past sixty days, all of which were on
         the open market, are set forth in Schedule A and are incorporated by
         reference.

CUSIP No. 81756X 10 3                                          Page 4 of 4 Pages


(d)      No other person has the power to receive or the power to direct the
         receipt of dividends from, or the proceeds from the sale of the shares
         of Common Stock.

(e)      Not applicable.

Item 6.     Contracts, Arrangements, Understandings or Relationships with
            Respect to Securities of the Issuer

There are no contracts, arrangements, understandings or relationships (legal or
otherwise) among the Reporting Persons and between such persons and any person
with respect to any securities of the Company, including but not limited to
transfer or voting of any other securities, finder's fees, joint ventures, loan
or option arrangements, puts or calls, guarantees of profits, divisions of
profits or loss, or the giving or withholding of proxies.

Item 7.     Materials to be Filed as Exhibits

Not applicable.

Signature

After reasonable inquiry and to the best of our knowledge and belief, the
undersigned certify that the information set forth in this statement is true,
complete and correct.

DATED:  August 19, 2004

 /s/ Kenneth R. Lehman

/s/ Joan Abercrombie Lehman



                                   Schedule A

Date of Transaction        Number of Shares Purchased          Price per share (including any commissions)
- -------------------        --------------------------          -------------------------------------------
                                                                        
     8/18/2004                        23,500                                   26.81