1 EXHIBIT 2.3 SECOND AMENDMENT TO STOCK PURCHASE AGREEMENT SECOND AMENDMENT (the "Second Amendment") dated as of September 30, 1998 by and among Lamar Advertising Company, a Delaware corporation ("Buyer"), Outdoor Communications, Inc., a Delaware corporation (the "Company"), and each of the stockholders of the Company (the "Stockholders"). WHEREAS Buyer, the Company and each of the Stockholders are parties to that certain Stock Purchase Agreement dated as of August 10, 1998 as amended by the First Amendment to Stock Purchase Agreement dated as of August 24, 1998 (the "Agreement"), pursuant to which each of the Stockholders has agreed to sell to Buyer, and Buyer has agreed to purchase, all of the Company Securities held by such Stockholder; and WHEREAS Buyer, the Company and the Stockholders desire to amend the Agreement to provide for payment for the Company Securities held by certain Stockholders to be paid by the issuance of promissory notes by Buyer. NOW, THEREFORE, for good and valuable consideration, the undersigned hereby agree as follows: 1. Capitalized terms not otherwise defined herein shall have the meanings ascribed to such terms in the Agreement. 2. The Agreement is hereby amended, as of the effective date of this Second Amendment, by inserting the following language after the phrase "in Section 2.2" in the first line of Section 2.4(b): ", less amounts payable to each of John C Stanley IV, A.B. Isbell and Ricky W. Thomas through the issuance of promissory notes in respect of the Company Securities owned by them in accordance with the last sentence of this subsection (b)," 3. The Agreement is hereby amended, as of the effective date of this Second Amendment, by adding the following sentence to Section 2.4(b): "Notwithstanding anything to the contrary in this Agreement, Buyer shall deliver to each of John C Stanley IV, A.B. Isbell and Ricky W. Thomas, as payment for the Company Securities owned by each such individual, a promissory note, in the form attached hereto as Exhibit B, in a principal amount equal to the amount set forth opposite such person's name in Schedule 2.4 attached hereto." 4. Exhibit A to the Agreement is hereby amended, as of the effective date of this Second Amendment, by deleting the number "1,030.31" set forth in the Shares of Series A Preferred Stock column opposite the name of Norman Isbell and substituting therefor ",". 5. Buyer, the Company and the Stockholders hereby agree that there shall be no adjustment to the purchase price payable to Stockholders for capital expenditures and acquisitions by the Company between August 10, 1998 and the Closing Date. 1 2 6. Section 7.5 is amended by adding at the end thereof the following: ", except that the Stockholder Note will be paid by issuance of a promissory note in the form attached hereto as Exhibit B in the principal amount of $2,000,000." 7. The effective date of this Second Amendment shall be the date first set forth above. 8. As amended by this Second Amendment, the Agreement is in all respects ratified and confirmed, and as so amended by this Second Amendment, the Agreement shall be read, taken and construed as one and the same instrument. 9. This Second Amendment may be executed in any number of counterparts and by the parties hereto in separate counterparts, each of which so executed shall be deemed to be an original, but all of such counterparts shall together constitute but one and the same instrument. 10. This Second Amendment shall be governed in accordance with the laws of the State of Delaware without regard to principles of conflicts of law. [END OF TEXT] 2 3 IN WITNESS WHEREOF the parties hereto have caused this Second Amendment to be executed as of the date set forth above by their duly authorized representatives. BUYER: LAMAR ADVERTISING COMPANY By: /s/ Keith A. Istre ----------------------------------------- Keith A. Istre, Chief Financial Officer COMPANY: OUTDOOR COMMUNICATIONS, INC. By: /s/ John C Stanley IV ----------------------------------------- John C Stanley IV, Chairman STOCKHOLDERS: By: /s/ Stephen F. Gormley ----------------------------------------- Stephen F. Gormley, on behalf of each of the Stockholders, on behalf of Media/ Communications Partners II Limited Partnership in its capacity as a Stockholders' Representative By: /s/ John C Stanley IV ----------------------------------------- John C Stanley IV, on behalf of each of the Stockholders, in his capacity as a Stockholders' Representative 3 4 SCHEDULE 2.4 - ---------------------------------------------------------------------------------------- Name Amount to be Paid Through Issuance of a Note - ---------------------------------------------------------------------------------------- John C Stanley IV $22,803,673.00 - ---------------------------------------------------------------------------------------- A.B. Isbell 19,007,475.00 - ---------------------------------------------------------------------------------------- Ricky W. Thomas 1,196,178.00 - ---------------------------------------------------------------------------------------- 4