UPDATE 1-Lincoln International, backers aim to raise $421 million in US IPO

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- Lincoln International and some of its existing stockholders are aiming to raise as much as $421 million in an initial public offering in the United States, the boutique investment bank said on Monday.

The Chicago, Illinois-based company is offering 20.6 million shares, while selling stockholders are parting ways with 445,942 shares.

Goldman Sachs and Morgan Stanley are the joint lead bookrunning managers for the offering.

Lincoln International will list on the New York Stock Exchange under the symbol "LCLN".