Porter Bancorp, Inc. Changes Name to Limestone Bancorp, Inc.

Porter Bancorp, Inc. (Nasdaq: PBIB), parent company of Limestone
Bank, announced today that it has changed its name to Limestone
Bancorp, Inc. The Company’s common stock will begin trading on the
Nasdaq stock exchange under the ticker symbol LMST on June 19, 2018.
Shareholders approved the corporate name change at the Company’s annual
meeting on May 23, 2018. No further action is required by shareholders
to complete the name change.

John T. Taylor, President and CEO of Limestone Bancorp and Limestone
Bank, stated, “We are pleased that shareholders overwhelmingly approved
our corporate name change to Limestone Bancorp, Inc. We believe the new
name recognizes the bank’s Kentucky roots, which can be traced back more
than 110 years, and allows us to update our brand to set the tone for
the future. We have a long history of servicing our local communities
across the Commonwealth, and we want to continue to make sure we live up
to the strength of the relationships we’ve built. The new name
emphasizes our Kentucky heritage. Limestone is not only a sturdy rock
found across Kentucky, but it’s also used by many of our equine
customers as a supplement source of calcium in horse feed. These two
aspects of limestone mirror our sturdy commitment to helping our
customers build a firm financial future.”

About Limestone Bancorp, Inc.Limestone Bancorp, Inc.
(formerly known as Porter Bancorp, Inc.) (NASDAQ: LMST) is a Louisville,
Kentucky-based bank holding company which operates banking centers in 12
counties through its wholly-owned subsidiary Limestone Bank. Our markets
include metropolitan Louisville in Jefferson County and the surrounding
counties of Henry and Bullitt, and extend south along the Interstate 65
corridor. We serve southern and south central Kentucky from banking
centers in Butler, Green, Hart, Edmonson, Barren, Warren, Ohio and
Daviess counties. We also have a banking center in Lexington, Kentucky,
the second largest city in the state. Limestone Bank is a traditional
community bank with a wide range of personal and business banking
products and services.

Forward-Looking StatementsStatements in this press release
relating to Limestone Bancorp’s plans, objectives, expectations or
future performance are forward-looking statements within the meaning of
the Private Securities Litigation Reform Act of 1995. The words
“believe,” “may,” “should,” “anticipate,” “estimate,” “expect,”
“intend,” “objective,” “possible,” “seek,” “plan,” “strive” or similar
words, or negatives of these words, identify forward-looking statements
that involve risks and uncertainties. Although the Company’s management
believes the assumptions underlying the forward-looking statements
contained herein are reasonable, any of these assumptions could be
inaccurate. Therefore, there can be no assurance the forward-looking
statements included herein will prove to be accurate. Factors that could
cause actual results to differ from those discussed in forward-looking
statements include, but are not limited to: economic conditions both
generally and more specifically in the markets in which the Company and
its subsidiaries operate; competition for the Company’s customers from
other providers of financial services; government legislation and
regulation, which change from time to time and over which the Company
has no control; changes in interest rates; material unforeseen changes
in liquidity, results of operations, or financial condition of the
Company’s customers; and other risks detailed in the Company’s filings
with the Securities and Exchange Commission, all of which are difficult
to predict and many of which are beyond the control of the Company. The
forward-looking statements in this press release are made as of the date
of the release and Limestone Bancorp does not assume any responsibility
to update these statements.

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