The Lemont National Bank (“Lemont”) and its parent company Lemont Bancorp, Inc., announced that Lemont has been acquired by NuMark Credit Union (“NuMark”). Pursuant to the definitive agreement, NuMark purchased substantially all of the assets and assumed substantially all of the liabilities of The Lemont National Bank.
Olsen Palmer LLC served as financial advisor to Lemont Bancorp Inc. and The Lemont National Bank.
With the transaction finalized, the combined institution has a footprint of 14 branches. Barack Ferrazzano Kirschbaum & Nagelberg LLP acted as legal advisor to Lemont in connection with the transaction.
Olsen Palmer is the #1 ranked sell-side bank M&A advisor nationwide – and top 3 overall – based on the number of transactions advised upon in 2025, according to S&P Global.

