Unregistered Sales of Equity Securities. As previously disclosed in the final prospectus, dated as of May 19, 2026 (the “ Prospectus ”), related to the initial public offering (the “ IPO ”) of Class A common stock, par value $0.00001 per share (“ Class A common stock ”), of Lincoln International, Inc. (the “ Company ”), the Company is obligated, within ninety (90) days of the closing of the IPO, to issue shares of Class A common stock (the “ Liquidity Event Issuance ”) to certain current and…

of this current report on Form 8-K, including Exhibit 99.1, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, and shall not be deemed incorporated by reference in any filing made by the Company under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Director — Ms. M. Christie Smith and Mr. John W. Oleniczak: Appointment of new directors to the board.

Material Modification to Rights of Security Holders. The information set forth under

Entry into a Material Definitive Agreement. In connection with the initial public offering (the “ Offering ”) by Lincoln International, Inc. (the “ Company ”) and the selling stockholders of the Company’s Class A common stock, par value $0.00001 (the “ Common Stock ”), described in the prospectus (the “ Prospectus ”), dated May 19, 2026, filed with the Securities and Exchange Commission pursuant to Rule 424(b) of the Securities Act of 1933, as amended (the “ Securities Act ”), which is deemed…

Unregistered Sales of Equity Securities. Simultaneously with the consummation of the Offering, the Company issued (i) 32,096,939 shares of Class B common stock of the Company, par value $0.00001 per share, to the Limited Partners other than the Controlling Partners (as defined in the A&R LPA), on a one-to-one basis equal to the number of common units of OpCo that each such Limited Partner owns, in exchange for nominal consideration and (ii) 48,860,500 shares of Class C common stock of the Com…