FORM 4

[  ]   Check this box if no longer
       subject to Section 16. Form 4 or
       Form 5 obligations may continue.
       See Instruction 1(b).

(Print or Type Responses)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility
Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* Schubert Jeffrey C. (Last) (First) (Middle) c/o Firstbank Corporation, 311 Woodworth Avenue (Street) Alma MI 48801 (City) (State) (Zip) 2. Issuer Name and Ticker or Trading Symbol Firstbank Corporation - FBMI 3. I.R.S. Identification Number of Reporting Person, if an entity (voluntary) 4. Statement for Month/Day/Year 1001/1627/~~2002~~2003 5. If Amendment, Date of Original (Month/Day/Year) 6. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director 10% Owner Officer (give title below) Other (specify below) 7. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1. Title of Security (Instr. 3)

2.Transaction Date(Month/Day/Year)

2A. Deemed Execution Date, if any(Month/Day/Year)

3. Trans- action Code (Instr. 8)

4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)

6. Owner- ship Form: Direct (D) or Indirect (I) (Instr. 4)

7. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

Amount

(A) or (D)

Price

Common Stock

1001/1627/~~2002~~2003

~~130~~96.~~3069~~1894

$2327.7903

1011,~~545~~422.~~4118~~3986

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.

(Over)
SEC 1474 (9-02)

FORM 4 (continued)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative
Security
(Instr. 3)

2. Conver-
    sion or
    Exercise
    Price of
    Deri-
    vative
    Security

3. Trans-
action
Date

(Month/
Day/
Year)

3A. Deemed Execution Date, if any

(Month/
Day/
Year)

4. Trans-
    action
    Code
    (Instr.8)

5. Number of Deriv-
    ative Securities Ac-
    quired (A) or Dis-
    posed of (D)

    (Instr. 3, 4 and 5)

6. Date Exercisable
    (DE) and
    Expiration
    Date (ED)
    (Month/Day/Year)

7. Title and Amount of
Underlying Securities
(Instr. 3 and 4)

8. Price of
    Derivative
    Security
    (Instr.5)

9. Number of
    Derivative
    Securities
    Beneficially
    Owned
    Following
    Reported
    Trans-
    action(s)
    (Instr.4)

10. Owner-
     ship
     Form of
     Deriv-
     ative
     Security:
     Direct
     (D) or
     Indirect
     (I)

     (Instr.4)

11. Nature of
      Indirect
      Beneficial
      Ownership
      (Instr.4)

Code

Title

Amount or Number of Shares

Explanation of Responses:

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure. Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number. /s/ Donald Johnson ** Signature of Reporting Person Donald Johnson for Jeffrey C. Schubert by Power of Attorney 01/0328/03 Date

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