SHAREHOLDER ALERT: Levi & Korsinsky, LLP Notifies Investors of an Investigation Regarding Whether the Sale of CoBiz Financial Inc. to BOK Financial Corporation is Fair to Shareholders

The following statement is being issued by Levi & Korsinsky, LLP:

To: All Persons or Entities who purchased CoBiz Financial Inc. (“CoBiz”
or the “Company”) (NASDAQGS: COBZ) stock prior
to June 18, 2018.

You are hereby notified that Levi & Korsinsky, LLP has commenced
an investigation into the fairness of the sale
of CoBiz to BOK Financial Corporation (NASDAQGS: BOKF). Under the
terms of the transaction, CoBiz shareholders will receive 0.17 shares of
BOK stock and $5.70 in cash for each share of CoBiz stock they own.
Based on the closing price of BOK Financial Corporation on June 15,
2018, this represents a value of approximately $23.02 per share. To
learn more about the action and your rights, go to:

CoBiz Financial Inc.

or contact Joseph E. Levi, Esq. either via email at jlevi@levikorsinsky.com or
by telephone at (212) 363-7500, toll-free: (877) 363-5972. There
is no cost or obligation to you.

The investigation concerns whether the Board of CoBiz breached their
fiduciary duties to stockholders by failing to adequately shop the
Company before agreeing to enter into this transaction, and whether
CoBiz is underpaying for CoBiz shares, thus unlawfully harming CoBiz

Levi & Korsinsky is a national firm with offices in New York,
Connecticut, California, and Washington D.C. The firm’s attorneys have
extensive expertise in prosecuting securities litigation involving
financial fraud, representing investors throughout the nation in
securities lawsuits and have recovered hundreds of millions of
dollars for aggrieved shareholders. For more information, please
feel free to contact any of the attorneys listed below. Attorney
advertising. Prior results do not guarantee similar outcomes.

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