Sec Form 5 Filing - TRIMARCHI E JAMES @ FIRST COMMONWEALTH FINANCIAL CORP /PA/ - 2005-12-31

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

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 TRIMARCHI E JAMES 2. Issuer Name and Ticker or Trading Symbol FIRST COMMONWEALTH FINANCIAL CORP /PA/ [ FCF] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chairman-ExecOfficer-SeeNote1 (Last) (First) (Middle) COLLEGE LODGE ROAD 3. Date of Earliest Transaction (MM/DD/YY) 12/31/2005 (Street) INDIANA, PA15701 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction 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. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 04/15/2005 J( 2 ) V 2,366 A $ 12.11 211,336 D Common Stock 07/15/2005 J( 2 ) V 2,252 A $ 13.02 213,588 D Common Stock 10/15/2005 J( 2 ) V 2,475 A $ 12 216,063 D Common Stock 12/31/2005 J( 3 ) V 1,560 A $ 11.95 ( 3 ) 217,623 D Common Stock 12/31/2005 J( 4 ) V 1,709 A $ 14.09 ( 4 ) 219,332 D Common Stock 52,172 D ( 5 ) Common Stock 318,876 D ( 6 ) Common Stock 59,304 D ( 7 ) Common Stock 204,000 I ( 8 ) Footnote8

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. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 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 Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Stock Option ( 1 ) ( 9 ) $ 14.6875 12/31/1998 03/01/2008 Common Stock 19,064 19,064 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other TRIMARCHI E JAMES COLLEGE LODGE ROAD INDIANA, PA15701 X Chairman-ExecOfficer-SeeNote1 Signatures /s/ E James Trimarchi 02/09/2006 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Retired position as Chairman and Executive Officer of First Commonwealth Financial Corporation on 12/20/2006. ( 2 )Shares acquired through the automatic quarterly purchase of shares through a dividend reinvestment plan; the price per share shown reflects a 10% discount on the fair market price, a bonus feature of the plan for all participants. ( 3 )2005 allocation of employee stock ownership shares, including shares purchased automatically through a dividend reinvestment plan during the year; avg. price of allocation was $11.95 ( 4 )2005 allocation of shares purchased by the administrator for an employee 401k plan retirement savings & investment plan; the avg. price per share of the purchase was $14.09. ( 5 )Total FCF shares held by Atlas Investment Company, of which Mr. Trimarchi is 25% owner. ( 6 )Total FCF shares held by County Wide Real Estate, of which Mr. Trimarchi is 50% owner. ( 7 )Total FCF shares held by family interests ( 8 )Total FCF shares held by Berkshire Securities Corporation. Mr. Trimarchi shares voting and investment power only on the shares, along with other directors and officers of Berkshire. ( 9 )Incentive/Non-qualified stock option grant--Option to Buy. Under terms of the option agreement, if not exercised, this option will expire and no longer be in effect 3 months after the retirement of an employee. This option is due to expire March 20, 2006.

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).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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