Document:

<PAGE>
                                                                     Exhibit 4.2

      [SPECIMEN OF STOCK CERTIFICATE REPRESENTING CLASS B COMMON STOCK]

                                    [front]

                                  [EMSC Logo]

                     EMERGENCY MEDICAL SERVICES CORPORATION
              INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE

  NUMBER                                                              SHARES
CLB

          CLASS B                                                      CLASS B
        COMMON STOCK                                                COMMON STOCK

                                                                    CUSIP

This certifies that                                            SEE REVERSE FOR
                                                             CERTAIN DEFINITIONS

is the owner of

 FULLY PAID AND NON-ASSESSABLE SHARES OF THE CLASS B COMMON STOCK, PAR VALUE OF
                            ONE CENT ($.01) EACH OF

Emergency Medical Services Corporation transferable on the books of the
Corporation by the holder hereof in person or by authorized attorney upon
surrender of this certificate properly endorsed. This certificate is not valid
until countersigned and registered by the Transfer Agent and Registrar.

     Witness the facsimile seal of the Corporation and the facsimile signatures
of its duly authorized officers.

Dated:

     [EMERGENCY MEDICAL SERVICES CORPORATION CORPORATE SEAL 2004 DELAWARE]

/s/ TODD G. ZIMMERMAN                                      /s/ WILLIAM A. SANGER
       SECRETARY                                           CHAIRMAN OF THE BOARD

COUNTERSIGNED AND REGISTERED
          AMERICAN STOCK TRANSFER & TRUST COMPANY
BY                     (NEW YORK, NY)
                TRANSFER AGENT AND REGISTRAR

                       AUTHORIZED SIGNATURE

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                                   [reverse]

                     EMERGENCY MEDICAL SERVICES CORPORATION

     THE CORPORATION WILL FURNISH WITHOUT CHARGE TO EACH STOCKHOLDER WHO SO
REQUESTS A COPY OF THE POWERS, DESIGNATIONS, PREFERENCES AND RELATIVE,
PARTICIPATING, OPTIONAL OR OTHER SPECIAL RIGHTS OF EACH CLASS OF STOCK OR SERIES
THEREOF OF THE CORPORATION, AND THE QUALIFICATIONS, LIMITATIONS OR RESTRICTIONS
ON SUCH PREFERENCES AND/OR RIGHTS.

     The following abbreviations, when used in the inscription on the face of
this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

<Table>
<Caption>
<S>                                      <C>
TEN COM-as tenants in common              UNIF GIFT MIN ACT-_________Custodian_________
                                                             (Cust)            (Minor)
TEN ENT-as tenants by the entireties
JT TEN -as joint tenants with right of                      under Uniform Gifts to Minors
        survivorship and not as tenants
        in common                                           Act for____________________
                                                                         (State)
</Table>

    Additional abbreviations may also be used though not in the above list.

  For Value Received, __________________ hereby sell, assign and transfer unto

PLEASE INSERT SOCIAL SECURITY OR OTHER
  IDENTIFYING NUMBER OF ASSIGNEE

________________________________________________________________________________

________________________________________________________________________________
 (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

________________________________________________________________________________

________________________________________________________________________________

__________________________________________________________________________Shares
of the capital stock represented by the within Certificate, and do hereby
irrevocably constitute and appoint

________________________________________________________________________Attorney
to transfer the said stock on the books of the within named Corporation with
full power of substitution in the premises.

Dated___________________________

________________________________________________________________________________
NOTICE: THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS
WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT
ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATEVER.

SIGNATURE(S) GUARANTEED:________________________________________________________
                        THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE
                        GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND
                        LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN
                        AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM),
                        PURSUANT TO S.E.C. RULE 17Ad-15.

KEEP THIS CERTIFICATE IN A SAFE PLACE. IF IT IS LOST, STOLEN, MUTILATED OR
DESTROYED, THE CORPORATION WILL REQUIRE A BOND OF INDEMNITY AS A CONDITION TO
THE ISSUANCE OF A REPLACEMENT CERTIFICATE.exv10w1

 

Exhibit 10.1

DEARBORN BANCORP, INC.

2005 Long-Term Incentive Plan

STOCK OPTION AGREEMENT

Optionee:

Total Shares Under Option:

Option Price:

Grant Date:

Expiration Date:

     THIS STOCK OPTION AGREEMENT is effective as of the Grant Date stated above, by and between
Dearborn Bancorp, Inc. and the Optionee.

     WHEREAS, the options described in this Agreement have been granted to the Optionee pursuant
to, and are governed by, the Dearborn Bancorp, Inc. 2005 Long-Term Incentive Plan;

     NOW, THEREFORE, the Company and the Optionee hereby agree as follows:

1. Option Grant. Subject to the terms and conditions of this Agreement, the Company hereby grants
an option to the Optionee to purchase from the Company, at the Option Price, the number of shares
of Stock equal to the Total Shares Under Option. The options granted constitute an “incentive
stock option” within the meaning of section 422 of the Internal Revenue Code of 1986, as amended.

2. Vesting.

     (a) Regular Vesting. Except as stated in Sections 2(b), 2(c) and 2(d) of this Agreement, the
Optionee shall become vested in the Total Shares Under Option if the Vesting Criteria set forth in
the attached Schedule A — Vesting Criteria Schedule have been met. If the Vesting Criteria have
not been met as of the date set forth in Schedule

 

 

A, the Optionee’s rights to the Total Shares Under Option will be immediately forfeited. The
Committee will determine in its sole discretion whether the Vesting Criteria are met.

     (b) Accelerated Vesting. Notwithstanding the satisfaction of the Vesting Criteria referred to
in Section 2(a) of this Agreement, the Total Shares Under Option shall become 100% vested upon the
date of a Change in Control.

     (c) Termination for Cause or Without Consent. Notwithstanding anything in this Agreement to
the contrary, if the Company terminates the Optionee’s employment for Cause prior to a Change in
Control, or the Optionee’s employment is terminated voluntarily by the Optionee and without the
consent of the Company, this Agreement shall be terminated and all options granted to the Optionee
under this Agreement shall be forfeited, regardless of whether the Vesting Criteria set forth on
Schedule A have been met on or before such termination date, unless and to the extent that the
Committee determines that such forfeiture would violate applicable law.

     (d) Misconduct. An Optionee shall forfeit all rights in his or her option under the Plan,
and all such options shall automatically terminate and lapse, if the Committee determines that the
Optionee has (i) used for profit or disclosed to unauthorized persons, confidential information or
trade secrets of the Company, (ii) breached any contract with or violated any fiduciary obligation
to the Company, including without limitation, a violation of any Company code of conduct, (iii)
engaged in unlawful trading in the securities of the Company or of another company based on
information gained as a result of that Optionee’s employment or other relationship with the
Company, or (iv) committed a felony or other serious crime.

2

 

     3. Exercise of Options.

     (a) General. Except as otherwise specified by the Committee in accordance with Section 3(c),
the Optionee (or his Representative, as the case may be) may exercise the options granted under the
Agreement, in whole or in part, at any time on or after the Vesting Date for such options and prior
to their Expiration Date, by complying with the procedures described in this Section 3. The
Optionee shall forfeit all rights to any option under this Agreement, whether or not then vested,
which is not exercised prior to the Expiration Date.

     (b) Exercise Procedure. The Optionee or his Representative (if applicable) may exercise all
or a portion of his vested options under this Agreement by delivering notice to the Company. The
notice shall specify the number of shares of Common Stock that the Optionee desires to purchase by
exercise of his or her vested options, and shall include payment for the Option Price of such
shares in one of the following ways:

	 	(i)	 	The Optionee may tender payment of the Option Price on the date
of exercise in the form of cash, certified check, bank draft, or postal or
express money order made payable to the order of the Company and denominated in
U.S. dollars; or
	 
	 	(ii)	 	The Optionee may tender payment of the Option Price on the date
of exercise in the form of shares of Common Stock having a Fair Market Value on
the date of exercise equal to the Option Price (if such shares were acquired
upon exercise of an option, they must

3

 

	 	 	 	have been held by the Optionee for at least six months at the time of
tender); or
	 
	 	(iii)	 	The Optionee may tender payment of the Option Price on the
date of exercise in a combination of (A) shares of Common Stock (subject to the
holding period described in paragraph (ii) above); and (B) cash, certified
check, bank draft, or postal or express money order made payable to the order
of the Company and denominated in U.S. dollars, equal to the difference between
the Option Price and the Fair Market Value of the tendered shares of Common
Stock on the date of exercise.

Within 30 days after the date of such exercise, the Company shall make available to the Optionee a
certificate registered in the Optionee’s name or a book entry in a depository institution for the
Optionee’s account, representing the aggregate number of shares of Common Stock purchased by the
Optionee as a result of such exercise.

     (c) Deferral of Exercise or Delivery of Shares. Notwithstanding any provision in this
Agreement to the contrary, if any law or regulation of any governmental authority having
jurisdiction in the matter requires the Company, Committee, Optionee, or Representative to take any
action or refrain from action in connection with the exercise of any option under this Agreement or
the delivery of shares of Common Stock to the Optionee, or to delay such exercise or delivery, then
the exercise or delivery of such shares shall be deferred until such action has been taken or such
restriction on action has been removed.

4

 

4. Rules Governing the Expiration Date. The Expiration Date for options granted to the Optionee
under this Agreement shall be subject to the following rules:

     (a) Termination of Employment. If the Optionee voluntarily with the Consent of the Company
terminates employment with the Company (for reasons other than termination upon death, Change in
Control or Disability), the Expiration Date for exercising any options under this Agreement which
were vested as of his or her date of termination shall be the earlier of the three month
anniversary of the date of such termination or the Expiration Date of the option.

     (b) Disability. If the Optionee terminates employment with the Company on his Disability
Retirement Date, the Expiration Date for exercising his vested options under this Agreement shall
be the first anniversary of his Disability Retirement Date.

     (c) Optionee’s Death. If the Optionee dies while actively employed by the Company, the
Expiration Date for exercising his vested options under this Agreement shall be the first
anniversary of the Optionee’s death.

     (d) Change in Control. The Expiration Date for all of the Optionee’s vested options shall be
the tenth anniversary of the Grant Date if a Change in Control takes place while the Optionee is
employed by the Company.

     (e) Maximum Expiration Date. Notwithstanding any provision in this Section 4 of the Agreement
to the contrary, no option shall be exercisable on or after the tenth anniversary of the Grant
Date.

5. General Provisions. The Optionee acknowledges that he has read, understands and agrees with all
of the provisions in this Agreement and the Plan, including (but not limited to) the following:

5

 

     (a) Authority of Committee. The Committee shall have all the authority set forth in the Plan
including, but not limited to, the authority to administer the Agreement and the Plan and to adopt
or establish such rules, regulations and agreements, guidelines, procedures and instruments, which
are not contrary to the terms of the Plan which it believes may be necessary or advisable for the
administration and operation of the Agreement and the Plan. Any dispute or disagreement which
arises under this Agreement or the Plan shall be resolved by the Committee in its absolute
discretion. Any such determination, interpretation or other action by the Committee shall be
final, binding and conclusive with respect to the Optionee and all other persons affected thereby.

     (b) Notices. Any notice which is required or permitted under this Agreement shall be in
writing (unless otherwise specified in the Agreement or in a writing from the Company to the
Optionee), and delivered personally or by mail, postage prepaid, addressed as follows: (i) if to
the Company at 1360 Porter Street, Dearborn, Michigan 48124-2823, Attention: Corporate Secretary,
or at such other address as the Company by notice to the Optionee may have designated from time to
time; (ii) if to the Optionee, at the address indicated in the Optionee’s then-current personnel
records, or at such other address as the Optionee by notice to the Company may have designated from
time to time. Such notice shall be deemed given upon receipt.

     (c) Withholding Taxes. The Company shall have the right to deduct from all options paid in
cash any federal, state or local taxes required by law to be withheld with respect to such options
and, with respect to options in which Common Stock is issued

6

 

upon exercise of an option, to require the payment (through withholding from the Optionee’s
salary or otherwise) of any such taxes.

     (d) Nontransferability. This Agreement and the options granted to the Optionee hereto shall
be nontransferable and shall not be sold, hypothecated or otherwise assigned or conveyed by the
Optionee to any other person, except as specifically permitted in this Agreement. No assignment or
transfer of this Agreement or the rights represented thereby, whether voluntary or involuntary, or
by operation of law or otherwise, shall vest in the assignee or transferee any interest or right
whatsoever, except as specifically permitted in this Agreement. The Agreement shall terminate, and
be of no force or effect, immediately upon any attempt to assign or transfer the Agreement or any
of the options to which the Agreement applies.

     (e) Designation of Beneficiary. The Optionee may designate a person or persons to receive, in
the event of his death, any rights to which he would be entitled under this Agreement. Such a
designation shall be filed with the Company in accordance with uniform procedures specified by the
Committee. The Optionee may change or revoke a beneficiary designation at any time by filing a
written statement of such change or revocation with the Company in accordance with uniform
procedures specified by the Committee. No beneficiary designation or change of beneficiary
designation will be effective until notice thereof is received. If an Optionee fails to designate
a beneficiary or if the beneficiary predeceases the Optionee, the beneficiary shall be the legal
representative of the Optionee’s estate. The Optionee is not required to obtain spousal consent to
designate someone other than the spouse as beneficiary.

7

 

     (f) Disability Exercise. In the event of the Disability of the Optionee, the option may be
exercised by the Optionee’s legal representative or guardian.

     (g) No Shareholder Rights. The Optionee shall have no rights as a shareholder of the Company,
and shall not be deemed to be a shareholder of the Company for any purpose, as a result of the
options granted to the Optionee under this Agreement, until the date that shares of Common Stock
have been issued or transferred to the Optionee following the exercise of an option in accordance
with this Agreement. The Optionee shall not be entitled to any dividends or other rights for which
the record date is prior to the date of such issuance, transfer, or receipt.

     (h) Not an Employment Contract. This Agreement shall not be deemed to limit or restrict the
right of the Company to terminate the Optionee’s employment at any time, for any reason, with or
without Cause, or to limit or restrict the right of the Optionee to terminate his employment with
the Company at any time.

     (i) Amendment or Termination. This Agreement may be amended or terminated at any time by the
mutual agreement and written consent of the Optionee and the Committee. The Committee shall have
the right to amend the Vesting Criteria set forth on Schedule A to the Agreement prior to any
option becoming vested.

     (j) Governing Instrument. This Agreement is subject to all terms and conditions of the Plan
and shall at all times be interpreted in a manner that is consistent with the intent, purposes, and
specific language of the Plan.

     (k) Severability. If any provision of this Agreement should be held illegal or invalid for
any reason by the Committee or court of applicable jurisdiction, such

8

 

determination shall not affect the other provisions of this Agreement, and it shall be
construed as if such provision had never been included herein.

     (l) Headings/Gender. Headings in this Agreement are for convenience only and shall not be
construed to be part of this Agreement. Any reference to the masculine, feminine or neuter gender
shall be a reference to other genders as appropriate.

     (m) Governing Law. This Agreement shall be construed, and its provisions enforced and
administered, in accordance with the laws of the State of Michigan and, where applicable, federal
law.

6. Definitions. All capitalized terms shall have the meaning set forth in the Plan or, if not
defined in the Plan, shall be defined as set forth below.

     (a) Cause means (i) the willful and continued failure by Optionee substantially to perform
duties and obligations to the Company (other than any such failure resulting from Optionee’s
Disability), (ii) the willful engaging by Optionee in misconduct which is materially injurious to
the Company, monetarily or otherwise, (iii) a conviction for or plea of nolo contendere to a felony
under the laws of any state within the United States or of the United States.

     (b) Change in Control has the meaning specified in Section 8 of the Plan.

     (c) Disability means the Optionee is unable to engage in any substantial gainful activity by
reason of any medically determinable physical or mental impairment which can be expected to result
in death or can be expected to last for a continuous period of not less than 12 months or as
otherwise determined by the Committee.

9

 

     (d) Disability Retirement Date means the date of the Optionee’s termination of employment from
the Company due to Disability.

     (e) Expiration Date means the date set forth on the first page of this Agreement unless an
earlier Expiration Date is established by operation of Section 4 of this Agreement.

     (f) Fair Market Value has the meaning specified in Section 2(i) of the Plan.

     (g) Grant Date means the date set forth on the first page of this Agreement, upon which the
options described in this Agreement were granted to the Optionee.

     (h) Option Price means the price per share set forth on the first page of this Agreement.

     
(i) Optionee means the person named on the first page of this Agreement.

     (j) Plan means the Dearborn Bancorp, Inc. 2005 Long-Term Incentive Plan, as adopted by the
Board of Directors on April 12, 2005, and approved by the Company’s shareholders on May 17, 2005,
and as may be amended from time to time.

     (k) Representative means, in the event of the Optionee’s Disability, his duly authorized legal
representative or guardian; or, in the event of the Optionee’s death, his estate, legal
representative, or beneficiary as designated pursuant to Section 5(e).

     (l) Total Shares Under Option means the number of options granted to the Optionee as set forth
on the first page of this Agreement.

     (m) Vesting
Criteria means the criteria set forth in Schedule A — the Vesting Criteria
Schedule to this Agreement.

     (n) Vesting
Date means the date(s) specified in Schedule A — the Vesting Criteria Schedule to
this Agreement by which the Vesting Criteria must be met.

10

 

     The Optionee by accepting this option acknowledges and agrees (i) that the option will be
exclusively governed by the terms of the Plan, including the right reserved by the Company to amend
or cancel the Plan at any time without the Company incurring liability to the Optionee (except for
options already granted under the Plan), (ii) that options are not a constituent part of salary and
that the Optionee is not entitled, under the terms and conditions of employment, or by accepting or
being granted an option under the Plan to require options to be granted to him or her in the future
under this Plan or any other plan, and (iii) that the Optionee will seek all necessary approval
under, make all required notifications under and comply with all laws, rules and regulations
applicable to the ownership of options and Common Stock upon the exercise of the options.

     IN WITNESS WHEREOF, the Company has caused this Agreement to be executed by its duly
authorized officer and the Optionee has executed this Agreement, as of the Grant Date first above
written.

	 	 	 	 	 	 	 
	 	 	DEARBORN BANCORP, INC.	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	 	 	 

	 	 
	 
	 	 	 	 	 	 
	 	 	OPTIONEE	 	 
	 
	 	 	 	 	 	 
	 	 	 	 	 

11

 

SCHEDULE A

Vesting Criteria Schedule

 

 

Dearborn Bancorp, Inc.

2005 Long-Term Incentive Plan

DESIGNATION OF BENEFICIARY

CHECK ONE, COMPLETE AS APPLICABLE, AND SIGN

                               I do not wish to designate a Beneficiary under the 2005 Long-Term
Incentive Plan (the “Plan”) at this time. It is my desire that any right to exercise a stock
option under the Plan after my death be distributed under my Will or the laws of descent and
distribution.

                               In the event of my death it is my desire that any right to exercise a
stock option under the Plan pass to the following designated (Beneficiary(ies):

	 	 	 	 	 
	NAME

	 	RELATIONSHIP
	 	ADDRESS

(If more than one Beneficiary is named, the Beneficiaries shall share equally in the rights unless
otherwise stated above).

Unless otherwise expressly provided, if any Beneficiary above designated predeceases the
Participant, any rights shall pass equally to the remaining designated Beneficiary(ies), if any,
who survive the Participant, but if no designated Beneficiary survives the Participant, any rights
shall be distributed to the Participant’s estate.

The Participant may change the Beneficiary(ies) by filing written notice with the Company.

The designation of Beneficiary herein is subject to all the terms and conditions of the Plan and
all applicable laws, rules and regulations. In addition, the Company may require an indemnity
and/or other assurances from the Beneficiary(ies) prior to the exercise of any rights by such
Beneficiary(ies) under the Plan.

	 	 	 	 	 	 	 
	Date:
	 	 	 	 	 	 
	 

	 	 
	 	 	 	 
	 

	 	 	 	 	 	Signature of Participant

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