TRUSTMARK CORPORATION (TRMK) Files An 8-K Regulation FD Disclosure

Item 7.01. Regulation FD Disclosure.

Included as Exhibit 99.1 hereto is an Investor Deck Trustmark
Acquisition of RB Bancorporation in this Form 8-K regarding the
proposed Merger. The Merger is further described in Item 8.01
hereof.

The information contained in Exhibit 99.1 hereto is being
furnished and shall not be deemed filed for the purposes of
Section 18 of the Securities Exchange Act of 1934, as amended, is
not subject to the liabilities of that section and is not deemed
incorporated by reference in any filing under the Securities Act
of 1933, as amended, or the Securities Exchange Act of 1934, as
amended, except as shall be expressly set forth by specific
reference in such a filing.

Item 8.01. Other Events.

Trustmark Corporation (NASDAQ:TRMK) (Trustmark) and RB
Bancorporation announced on November 14, 2016 the signing of a
definitive agreement to which RB Bancorporation would merge into
Trustmark.RB Bancorporation, with assets of $210 million, is the
holding company for Reliance Bank, which has seven offices
serving the Huntsville, Alabama MSA.

Under the terms of the definitive agreement, which has been
approved unanimously by the Boards of Directors of both
companies, holders of RB Bancorporation common stock will receive
$22.00 in cash for each share of RB Bancorporation; the aggregate
value of the transaction is approximately $25.6 million.The
transaction, which is subject to satisfaction of customary
closing conditions, including the approval of RB Bancorporation
shareholders and regulatory authorities, is expected to be
completed in the first half of 2017. RB Bancorporations bank
subsidiary, Reliance Bank, will merge into Trustmark National
Bank simultaneously with the merger of the respective parent
companies.

Gerard R. Host, President and Chief Executive Officer of
Trustmark, commented, We are excited to further expand our
Alabama franchise in Athens and the surrounding Huntsville area,
which is among the most attractive metropolitan areas in the
Southeast.Reliance Banks management team possesses in-depth
knowledge of the Huntsville market and is committed to customer
satisfaction.In addition to their solid customer base and
attractive Huntsville market, the transaction is a natural
expansion of our Alabama franchise.

Robert F. Harwell, Jr., President and Chief Executive Officer of
RB Bancorporation and Reliance Bank, stated, We are pleased to
partner with an organization that has a long and distinguished
history of leadership in community banking and shares our
customer focus.We look forward to joining Trustmark and providing
our customers additional financial solutions to meet their
specific needs.

Brunini, Grantham, Grower Hewes, PLLC served as Trustmarks legal
advisor.SEACAP Financial, Inc. acted as financial advisor and
Balch Bingham LLP served as legal advisor to RB Bancorporation.

Additional Information

Trustmark Corporation is the parent company of Trustmark National
Bank, a financial services company providing banking and
financial solutions through 194 offices in Alabama, Florida,
Mississippi, Tennessee and Texas.

RB Bancorporation is the parent company of Reliance Bank, which
has seven offices serving the Huntsville, Alabama MSA.

Forward-Looking Statements

Certain statements contained in this document constitute
forward-looking statements within the meaning of the Private
Securities Litigation Reform Act of 1995. You can identify
forward-looking statements by words such as may, hope, will,
should, expect, plan, anticipate, intend, believe, estimate,
predict, potential, continue, could, future or the negative of
those terms or other words of similar meaning. You should read
statements that contain these words carefully because they
discuss our future expectations or state other forward-looking
information. These forward-looking statements include, but are
not limited to, statements relating to anticipated future
operating and financial performance measures, including net
interest margin, credit

quality, business initiatives, growth opportunities and growth
rates, among other things, and encompass any estimate,
prediction, expectation, projection, opinion, anticipation,
outlook or statement of belief included therein as well as the
management assumptions underlying these forward-looking
statements. You should be aware that the occurrence of the events
described under the caption Risk Factors in Trustmarks filings
with the Securities and Exchange Commission could have an adverse
effect on our business, results of operations and financial
condition. Should one or more of these risks materialize, or
should any such underlying assumptions prove to be significantly
different, actual results may vary significantly from those
anticipated, estimated, projected or expected.

Risks that could cause actual results to differ materially from
current expectations of Management include, but are not limited
to, changes in the level of nonperforming assets and charge-offs,
local, state and national economic and market conditions,
including conditions in the housing and real estate markets in
the regions in which Trustmark operates and the extent and
duration of the current volatility in the credit and financial
markets as well as crude oil prices, changes in our ability to
measure the fair value of assets in our portfolio, material
changes in the level and/or volatility of market interest rates,
the performance and demand for the products and services we
offer, including the level and timing of withdrawals from our
deposit accounts, the costs and effects of litigation and of
unexpected or adverse outcomes in such litigation, our ability to
attract noninterest-bearing deposits and other low-cost funds,
competition in loan and deposit pricing, as well as the entry of
new competitors into our markets through de novo expansion and
acquisitions, economic conditions, including the potential impact
of issues relating to the European financial system and monetary
and other governmental actions designed to address the level and
volatility of interest rates and the volatility of securities,
currency and other markets, the enactment of legislation and
changes in existing regulations or enforcement practices or the
adoption of new regulations, changes in accounting standards and
practices, including changes in the interpretation of existing
standards, that affect our consolidated financial statements,
changes in consumer spending, borrowings and savings habits,
technological changes, changes in the financial performance or
condition of our borrowers, changes in our ability to control
expenses, changes in our compensation and benefit plans,
including those associated with the planned termination of our
noncontributory tax-qualified defined benefit pension plan,
greater than expected costs or difficulties related to the
integration of acquisitions or new products and lines of
business, cyber-attacks and other breaches which could affect our
information system security, natural disasters, environmental
disasters, acts of war or terrorism, and other risks described in
our filings with the Securities and Exchange Commission.

Although we believe that the expectations reflected in such
forward-looking statements are reasonable, we can give no
assurance that such expectations will prove to be correct. Except
as required by law, we undertake no obligation to update or
revise any of this information, whether as the result of new
information, future events or developments or otherwise.

F. Joseph Rein, Jr.

Senior Vice President

601-208-6898

Media:

Melanie A. Morgan

Senior Vice President

601-208-2979

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

About TRUSTMARK CORPORATION (TRMK)