Sec Form 4 Filing - FISH DONALD J @ FIRST NORTHERN COMMUNITY BANCORP - 2006-01-26

FORM 4 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 FISH DONALD J 2. Issuer Name and Ticker or Trading Symbol FIRST NORTHERN COMMUNITY BANCORP [ FNRN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) EVP/Chief Credit Officer (Last) (First) (Middle) P.O. BOX 547, 195 N. FIRST STREET 3. Date of Earliest Transaction (MM/DD/YY) 01/26/2006 (Street) DIXON, CA95620 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 01/26/2006 J( 1 ) 1,423 D $ 26.5 54,309 D Common Stock 01/26/2006 M( 1 ) 7,910 A $ 4.77 62,219 D Common Stock 01/26/2006 J( 2 ) 2,123 D $ 26.5 60,096 D Common Stock 01/26/2006 M( 2 ) 11,724 A $ 4.8 71,820 D Common Stock 01/26/2006 J( 3 ) 1,822 D $ 26.5 69,998 D Common Stock 01/26/2006 M( 3 ) 4,688 A $ 10.3 74,686 D Common Stock 01/26/2006 J( 4 ) 1,152 D $ 26.5 73,534 D Common Stock 01/26/2006 M( 4 ) 3,095 A $ 9.87 76,629 D Common Stock 01/26/2006 J( 5 ) 1,050 D $ 26.5 75,579 D Common Stock 01/26/2006 M( 5 ) 2,384 A $ 11.68 77,936 D Common Stock 01/26/2006 J( 6 ) 1,470 D $ 26.5 76,493 D Common Stock 01/26/2006 M( 6 ) 6,138 A $ 6.35 82,631 D Common Stock 01/26/2006 J( 7 ) 836 D $ 26.5 81,795 D Common Stock 01/26/2006 M( 7 ) 3,490 A $ 6.35 85,285 D Common Stock 01/26/2006 J( 8 ) 1,570 D $ 26.5 83,715 D Common Stock 01/26/2006 M( 8 ) 4,040 A $ 10.3 87,755 D Common Stock 01/26/2006 J( 9 ) 907 D $ 26.5 86,848 D Common Stock 01/26/2006 M( 9 ) 2,334 A $ 10.3 89,182 D Common Stock 01/26/2006 J( 10 ) 258 D $ 26.5 88,924 D Common Stock 01/26/2006 M( 10 ) 664 A $ 10.3 89,588 D Common Stock 01/26/2006 J( 11 ) 2,306 D $ 26.5 87,282 D Common Stock 01/26/2006 M( 11 ) 6,194 A $ 9.87 93,476 D Common Stock 01/26/2006 J( 12 ) 487 D $ 26.5 92,989 D Common Stock 01/26/2006 M( 12 ) 1,310 A $ 9.87 94,299 D Common Stock 01/26/2006 J( 13 ) 1,485 D $ 26.5 92,814 D Common Stock 01/26/2006 M( 13 ) 3,370 A $ 11.68 96,184 D Common Stock 01/26/2006 J( 14 ) 433 D $ 26.5 95,751 D Common Stock 01/26/2006 M( 14 ) 984 A $ 11.68 96,735 D

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 Common Stock $ 4.77 01/26/2006 01/26/2006 M 7,910 ( 15 ) 03/06/2008 Common Stock 7,910 $ 4.77 7,910 D Common Stock $ 4.8 01/26/2006 01/26/2006 M 11,724 ( 15 ) 01/03/2010 Common Stock 11,724 $ 4.8 19,634 D Common Stock $ 10.3 01/26/2006 01/26/2006 M 4,688 ( 15 ) 01/02/2012 Common Stock 4,688 $ 10.3 24,322 D Common Stock $ 9.87 01/26/2006 01/26/2006 M 3,095 ( 15 ) 01/02/2013 Common Stock 3,095 $ 9.87 27,417 D Common Stock $ 11.68 01/26/2006 01/26/2006 M 2,384 ( 16 ) 01/20/2014 Common Stock 2,384 $ 11.68 29,801 D Common Stock $ 6.35 01/26/2006 01/26/2006 M 6,138 ( 15 ) 01/02/2011 Common Stock 6,138 $ 6.35 35,939 D Common Stock $ 6.35 01/26/2006 01/26/2006 M 3,490 ( 15 ) 01/02/2011 Common Stock 3,490 $ 6.35 39,429 D Common Stock $ 10.3 01/26/2006 01/26/2006 M 4,040 ( 15 ) 01/02/2012 Common Stock 4,040 $ 10.3 43,469 D Common Stock $ 10.3 01/26/2006 01/26/2006 M 2,334 ( 15 ) 01/02/2012 Common Stock 2,334 $ 10.3 45,803 D Common Stock $ 10.3 01/26/2006 01/26/2006 M 664 ( 15 ) 01/02/2012 Common Stock 664 $ 10.3 46,467 D Common Stock $ 9.87 01/26/2006 01/26/2006 M 6,194 ( 15 ) 01/02/2013 Common Stock 6,194 $ 9.87 52,661 D Common Stock $ 9.87 01/26/2006 01/26/2006 M 1,310 ( 15 ) 01/02/2013 Common Stock 1,310 $ 9.87 53,971 D Common Stock $ 11.68 01/26/2006 01/26/2006 M 3,370 ( 16 ) 01/20/2014 Common Stock 3,370 $ 11.68 57,341 D Common Stock $ 11.68 01/26/2006 01/26/2006 M 984 ( 16 ) 01/20/2014 Common Stock 984 $ 11.68 58,325 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other FISH DONALD J P.O. BOX 547 195 N. FIRST STREET DIXON, CA95620 EVP/Chief Credit Officer Signatures Lynn Campbell, AVP/Corporate Secretary w/POA 01/30/2006 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Swapped 1,423 shares @$26.50 to exercise Option #20 ISO to purchase 7,910 shares @$4.77. ( 2 )Swapped 2,123 shares @$26.50 to exercise Option #34 ISO to purchase 11,724 shares @$4.80. ( 3 )Swapped 1,822 shares @$26.50 to exercise Option #94 ISO to purchase 4,688 shares @$10.30. ( 4 )Swapped 1,152 shares @$26.50 to exercise Option #99 ISO to purchase 3,095 shares @$9.87. ( 5 )Swapped 1,050 shares @$26.50 to exercise Option #102 ISO to purchase 2,384 shares @$11.68. ( 6 )Swapped 1,470 shares @$26.50 to exercise Option#90 NQ to purchase 6,138 shares @$6.35. ( 7 )Swapped 836 shares @$26.50 to exercise Option #91 NQ to purchase 3,490 shares @$6.35. ( 8 )Swapped 1,570 shares @$26.50 to exercise Option #95 NQ to purchase 4,040 shares @$10.30. ( 9 )Swapped 907 shares @$26.50 to exercise Option #96 NQ to purchase 2,334 shares @$10.30. ( 10 )Swapped 258 shares @$26.50 to exercise Option #97 NQ to purchase 664 shares @$10.30. ( 11 )Swapped 2,306 shares @$26.50 to exercise Option #100 NQ to purchase 6,194 shares @$9.87. ( 12 )Swapped 487 shares @$26.50 to exercise Option #101 NQ to purchase 1,310 shares @$9.87. ( 13 )Swapped 1,485 shares @$26.50 to exercise Option #104 NQ to purchase 3,370 shares @$11.68. ( 14 )Swapped 433 shares @$26.50 to exercise Option #105 NQ to purchase 984 shares @$11.68. ( 15 )Stock Options granted vested 20% upon grant and 20% annuallly over 4 years. ( 16 )Stock Options granted vested 0% upon grant and 25% annually over 4 years.

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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