Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.

On July 30, 2009, the Board of Directors of 1st Source Corporation, an Indiana corporation (the "Company"), amended the By-Laws of 1st Source Corporation (the "Bylaws") to add a new Section 4.14 to Article IV to elect not to be governed by new Indiana Code §23-1-33-6(c) of the Indiana Business Corporation Law (the "IBCL"). The new IBCL provision, which became effective July 1, 2009, imposes mandatory staggered terms for the members of the board of directors of all public companies incorporated in Indiana unless, on or before July 31, 2009, the company adopts a bylaw expressly electing not to be governed by the provision. Even if a company elects to "opt out" of the mandatory IBCL staggered board requirement, the company may maintain or adopt a staggered board in compliance with the provisions of the company's articles or bylaws. A company that does opt out on or before July 31, 2009, may subsequently rescind the election to opt out and cause the company to become subject to the mandatory staggered board requirement.

The Company currently maintains a staggered Board of Directors in compliance with its Bylaws and Articles of Incorporation.

The Bylaws, as amended, are attached as Exhibit 3.1 to this Current Report on Form 8-K and are incorporated herein by reference. Article IV, Section 4.14 contains the amendment.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits Exhibit No. Description 3.1 By-Laws of 1st Source Corporation (Amended By Directors as of July 30, 2009)