Item 8.01 Other Events.




As previously reported, on August 7, 2022, Professional Holding Corp. (the
"Company," "we," or "our"), the parent company of Professional Bank, entered
into an Agreement and Plan of Merger (the "Agreement") providing for the merger
(the "Merger") of the Company with and into Seacoast Banking Corporation of
Florida ("Seacoast"), the parent company of Seacoast National Bank ("SNB"), and
the merger of Professional Bank with and into SNB (together with the Merger, the
"Mergers"). In connection with the Mergers, the Company filed with the
Securities and Exchange Commission (the "SEC") a definitive proxy statement,
dated November 14, 2022 (the "Definitive Proxy Statement"), and commenced
mailing the Definitive Proxy Statement to shareholders of the Company on or
about November 14, 2022.



Since October 24, 2022, the Company has received demand letters from certain
purported shareholders of the Company (the "Demand Letters"). The Demand Letters
allege that the Definitive Proxy Statement (or the related preliminary proxy
statement, filed on October 4, 2022) contains certain disclosure deficiencies.



The Company has not responded to the Demand Letters and believes they are
without merit. However, in order to moot the unmeritorious disclosure claims,
alleviate the costs, risks and uncertainties inherent in litigation, and provide
additional information to its shareholders, the Company is voluntarily
supplementing the Definitive Proxy Statement with the supplemental disclosures
described in the following section entitled "Supplemental Disclosures" in this
Current Report on Form 8-K. Nothing in this Current Report on Form 8-K is an
admission, or shall be deemed an admission, of the legal necessity or
materiality under applicable laws of any of the disclosures set forth herein. To
the contrary, the Company denies all allegations in the Demand Letters that
additional disclosure was or is required.



This filing will not affect the timing of the special meeting of the Company's
shareholders scheduled for December 15, 2022, at 1:00 p.m., Eastern Time. The
Company's board of directors continues to recommend that the Company's
shareholders vote "FOR" the approval of the merger proposal.



Supplemental Disclosures



The following are additional disclosures that supplement the disclosures
contained in, and that should be read in conjunction with, the Definitive Proxy
Statement, which should be read in its entirety. To the extent that information
in this supplemental disclosure differs from, or updates information contained
in, the Definitive Proxy Statement, the information in this supplemental
disclosure shall supersede or supplement the information in the Definitive Proxy
Statement. Capitalized terms used herein, but not otherwise defined, shall have
the meanings ascribed to such terms in the Definitive Proxy Statement.



The Definitive Proxy Statement is hereby revised to reflect the following:

1. The disclosure under the heading "Proposal 1: The Merger - Background of the

Merger" is supplemented by adding the following underlined text to the third


    full paragraph on page 39 of the Definitive Proxy:




The parties had no further contact until April 12, 2022, when Mr. Martens
advised Mr. Shaffer that on April 11, 2022, Professional had received an
unsolicited non-binding letter of intent from a third party seeking to purchase
Professional. Prior to the receipt of the letter of intent, neither the
Professional board of directors nor its management had intended to solicit a
sale or merger of Professional. Mr. Martens and Mr. Shaffer informally discussed
Seacoast's interest in a potential merger/acquisition transaction with
Professional. At approximately the same time, Professional's investment bankers,
Stephens, informally contacted Piper Sandler, investment bankers to Seacoast, to
discuss a potential transaction. On April 13, 2022, Seacoast formally engaged
Piper Sandler to act as its exclusive financial advisor in connection with a
possible transaction. Following further discussions, on April 15, 2022,
Professional and Seacoast entered into a confidentiality agreement containing
customary terms, including a waivable standstill provision, in connection with a
possible transaction.


2. The disclosure under the heading "Proposal 1: The Merger - Background of the

Merger" is supplemented by adding the following underlined text to the sixth


    full paragraph on page 39 of the Definitive Proxy:




Following its engagement, Stephens contacted 11 potential parties, including
Seacoast and the initial third-party offeror, with regard to a possible
combination with Professional. Three of those parties entered into
confidentiality agreements containing customary terms, including waivable
standstill provisions, with Professional, following which they were given access
to a virtual data room. The parties were further advised that the deadline for
the submission of a bid was June 1, 2022. Three potential buyers submitted
proposals to purchase Professional, including Seacoast.

3. The disclosure under the heading "Proposal 1: The Merger - Opinion of

Seacoast's Financial Advisor - Comparable Company Analyses" is amended by

deleting the table of company names at the bottom of page 48 (the Seacoast

Peer Group) of the Definitive Proxy Statement and replacing it with the
    following:




Financials as of June 30, 2022                                            Balance Sheet                                    Capital Position                                         LTM Profitability                                              Valuation as of August 3, 2022
                                                                                                                                      Total        Bank CRE /                                                                                    Price /
                                                                              Loans/        NPAs /         TCE /         Lev.           RBC            Total                                                   Effic.                        LTM          2022   E      2023   E      Div.         Market
                                                                Assets         Deps.        Assets          TA           Ratio         Ratio            RBC           ROAA          ROAE           NIM          Ratio          TBV           EPS           EPS           EPS          Yield          Cap
           Company               City, State      Ticker         ($M)           (%)           (%)           (%)           (%)           (%)             (%)            (%)           (%)           (%)           (%)           (%)           (x)           (x)           (x)           (%)          ($M)

Atlantic Union Bkshs Corp. Richmond, VA AUB 19,662


     84.7          0.21          6.78          9.26         13.85            268.5          1.14          8.66          3.12          53.7           199          11.8          11.6           9.8           3.6         2,522
Trustmark Corp.                  Jackson, MS         TRMK        16,952          74.2         0.39¹          7.23          8.80         13.26            235.6          0.64          6.47          2.64          75.8           167          18.3          14.1          13.0           2.8         2,013
                                 Portsmouth,
TowneBank                        VA                  TOWN        16,864          74.5          0.10          8.26          9.19         16.76            227.6          1.16          9.92          2.77          63.2           158          11.7          11.2          10.3           3.2         2,084
WesBanco Inc.                    Wheeling, WV        WSBC        16,800          75.2         0.21¹          7.52          9.51         15.40            275.8          1.09          6.96          3.01          58.9           172          12.0          11.5          10.8           4.0         2,020
Renasant Corp.                   Tupelo, MS          RNST        16,618          77.0         0.46¹          7.34          9.16         15.34            256.3          0.91          6.77          2.90          65.9           163          12.5          11.6          10.7           2.7         1,876
                                 Birmingham,

ServisFirst Bancshares Inc.      AL                  SFBS        14,494    

     90.2          0.08          8.27          8.19         11.18            319.3          1.52         19.70          2.93          32.2           392          20.9          18.5          17.0           1.1         4,701
                                 Nashville,
FB Financial Corp.               TN                   FBK        12,194          81.8         0.39¹          8.90         10.20         13.60            270.8          1.21         10.68          3.24          63.2           187          13.6          13.9          11.5           1.2         1,989
                                 Southern
First Bancorp                    Pines, NC           FBNC        10,566          66.7          0.39         7.27¹          9.95         14.91            283.9          1.10          9.89          3.14          50.2           190          11.2           9.0           8.6           2.5         1,295
                                 Wilmington,
Live Oak Bancshares Inc.         NC                   LOB         9,121          71.9         1.60¹         6.98¹          9.44        12.49¹            166.0          2.32         26.28          3.98          63.5           218           9.0          17.7          15.3           0.3         1,715
                                 Coral
Amerant Bancorp Inc.             Gables, FL          AMTB         8,151          92.3          0.39          8.51         10.25         13.21            282.3          1.35         13.06          3.14          76.0           130           9.2          12.2          10.4           1.4           897
                                 Charleston,
City Holding Co.                 WV                  CHCO         6,243         69.3¹          0.40          7.76          9.42         16.26            203.7          1.50         13.53          2.92          50.1           272          14.7          13.8          13.4           2.8         1,292
                                 Hattiesburg,
The First Bancshares             MS                  FBMS         6,037          58.9         0.50¹          6.43        10.43¹        16.98¹            165.1          1.10          9.94          3.06          56.6           160           9.5           9.3           8.3           2.5           604





1) Reflects bank level data
2) SBCF data does not include pending acquisitions

Note: Peer group includes publicly traded banks headquartered in the southeast
between $5 billion and $20 billion in total assets; Price / Estimated EPS
multiples based on mean consensus estimates per S&P Global Market Intelligence
for each respective year








4. The disclosure under the heading "Proposal 1: The Merger - Opinion of

Seacoast's Financial Advisor - Comparable Company Analyses" is amended by

deleting the table of company names at the bottom of page 49 (Professional

Peer Group) of the Definitive Proxy Statement and replacing it with the
    following:




Financials as of June 30, 2022                                                    Balance Sheet                                    Capital Position                                         LTM Profitability                                              Valuation as of August 3, 2022
                                                                                                                                              Total        Bank CRE /                                                                                    Price /
                                                                                      Loans/        NPAs /         TCE /         Lev.           RBC            Total                                                   Effic.                        LTM          2022   E      2023   E      Div.         Market
                                                                        Assets         Deps.        Assets          TA           Ratio         Ratio            RBC           ROAA          ROAE           NIM          Ratio          TBV           EPS           EPS           EPS          Yield          Cap
Company                               City, State         Ticker         ($M)           (%)           (%)           (%)           (%)           (%)             (%)            (%)           (%)           (%)           (%)           (%)           (x)           (x)           (x)           (%)          

($M)


Burke & Herbert Bank & Trust      Alexandria, VA             BHRB         3,586          59.1         0.27¹          8.12        10.94¹        19.16¹            269.5          1.05         10.32          2.92          68.3           131          10.2            --            --           4.1           380
HomeTrust Bancshares Inc.         Asheville, NC              HTBI         3,549          89.3         0.46¹         10.31        10.11¹        11.02¹            291.9          1.01          9.00          3.42          69.9           103          10.8          10.3          10.3           1.5           372
FineMark Holdings Inc.            Fort Myers, FL             FNBT         3,528          72.4         0.03¹          7.56          9.16         20.03            115.2          0.84          9.65          2.20          65.9           128          12.3            --            --            --           343
Southern First Bancshares Inc     Greenville, SC             SFST         3,288          99.1          0.20          8.60          9.71         13.97            235.6          1.41         15.17          3.36          55.7           124           8.6          11.0           9.9            --          

351


First Community Bankshares Inc    Bluefield, VA              FCBC         3,258          82.2          0.82          9.08         8.40¹        13.18¹            232.9          1.37         10.26          3.60          57.8           185          12.3          11.6          11.3           3.6           525
Primis Financial Corp.            McLean, VA                 FRST         3,237          98.0          0.65          9.27         10.21         17.58            208.7          0.63          5.15          3.03          69.2           117          16.0          15.1          12.1           2.9           339
American National Bankshares      Danville, VA               AMNB         3,234          71.8         0.17¹          7.58          9.42         14.06            294.4          1.17         11.14          2.85          54.9           157           9.8          10.8          10.6           3.2           375
MetroCity Bankshares Inc.         Doraville, GA              MCBS         3,168         115.6          1.07          9.96         10.31         17.60             36.6          2.40         24.30          4.27          34.4           165           7.5           7.4           7.9           2.9          

521

CapStar Finl Hldgs Inc            Nashville, TN              CSTR         3,097          85.0          0.08         10.19         11.10         14.79            274.0          1.47         12.44          3.15          54.6           149          10.1          11.0          10.2           1.9          

462


MVB Financial Corp                Fairmont, WV               MVBF         2,984          84.7         0.84¹          8.27        11.63¹            --            262.1          0.95         10.23          3.45          89.5           161          15.2          22.0           9.9           2.1       

395


Blue Ridge Bankshares Inc.        Charlottesville, VA        BRBS         2,800          88.4         0.49¹          8.23        10.02¹        12.13¹            281.2          1.43         14.01          3.62          62.5           123           7.2            --            --           3.3           279
Colony Bankcorp Inc.              Fitzgerald, GA             CBAN         2,728          62.3         0.22¹          6.52         10.74         16.55            309.6          0.72          8.24          3.20          76.4           146          11.3          10.2           8.7           3.0           253
River Financial Corp.²            Prattville, AL             RVRF         2,501          63.6         0.11¹          4.13         8.36¹        13.44¹            177.6          1.15         16.48          3.19          52.1           209           7.8            --            --           1.4           213
C&F Financial Corp.               Toano, VA                  CFFI         2,334          75.8         0.15¹          7.31          9.50         15.50            221.9          1.17         13.05          4.10          69.2           101           6.6            --            --           3.3           169
John Marshall Bancorp Inc.        Reston, VA                 JMSB         2,316          82.8          0.02          8.96        10.97¹        15.12¹            335.6          1.38         14.48          3.22          45.4           182          12.7            --            --            --           376
FVCBankcorp Inc.                  Fairfax, VA                FVCB         2,306          86.4         0.16¹          8.25        10.72¹            --            385.1          1.18         11.82          3.14          50.2           141          11.6          11.0          11.1            --       

267


First Citizens Bancshares Inc.²   Dyersburg, TN              FIZN        

2,290          60.9         0.52¹          7.29         9.38¹            --            278.3          1.31         12.45         3.33¹          59.7           114           9.0            --            --           2.2           255





1) Reflects bank level data as of June 30, 2022
2) Reflects holding company data as of March 31, 2022

Note: Peer group includes publicly traded banks headquartered in the southeast
between $2.25 billion and $3.75 billion in total assets; Price / Estimated EPS
multiples based on mean consensus estimates per S&P Global Market Intelligence
for each respective year






5. The disclosure under the heading "Proposal 1: The Merger - Opinion of

Seacoast's Financial Advisor -Analysis of Precedent Transactions" is amended

by deleting the table of Acquiror and Target names at the top of page 51 (the

Regional Precedent Transactions) of the Definitive Proxy Statement and

replacing it with the following:






                                                                                                                    Transaction Information                                    Seller Information
                                                                                                                       Price/                 Core       1-Day
                                                                                                  Deal        LTM        Est.                 Dep.      Market       Total       TCE/       LTM        NPAs/
                                                                           

Announce. Value EPS EPS TBV Prem.


 Prem.      Assets        TA        ROAA      Assets
Acquiror                        St                  Target                St         Date         ($M)        (x)        (x)        (%)       (%)         (%)        ($M)        (%)        (%)         (%)
The First Bancshares             MS     Heritage Southeast Bancorp.        GA       07/27/22       207.5       15.5          -       179        6.9   

32.0 1,697 7.0 0.81 0.22 HomeTrust Bancshares Inc. NC Quantum Capital Corp.

GA 07/25/22 67.6 4.2 - 158 4.5

        -         660       10.2       3.15        0.00
First Bancorp                    NC     GrandSouth Bancorporation         

SC 06/21/22 181.1 10.7 10.8 189 8.5

     14.3       1,253        7.5       1.40        0.26
F.N.B. Corp.                     PA     UB Bancorp                        

NC 06/01/22 117.7 9.2 - 154 4.4

     10.2       1,170        6.6       1.14        0.04
DFCU Financial                   MI     First Citrus Bancorp. Inc.        

FL 05/12/22 105.0 15.3 - 211 9.3

63.3 689 8.0 1.01 0.00 United Community Banks Inc. GA Progress Financial Corp. AL 05/04/22 268.4 13.2 - 165 7.9

- 1,860 8.3 1.19 0.19 Seacoast Bnkg Corp. of FL FL Drummond Banking Co.


FL       05/04/22       173.2       13.8          -       191        9.5           -       1,025        8.3       1.37        0.21
The First Bancshares             MS     Beach Bancorp Inc.                 FL       04/26/22       116.7         NM          -       154        9.6   

- 620 13.1 0.40 1.77 Seacoast Bnkg Corp. of FL FL Apollo Bancshares/Apollo Bank FL 03/29/22 168.3 20.0 - 195 9.7

- 1,044 9.4 0.91 0.37 United Community Banks Inc. GA Reliant Bancorp Inc.


TN       07/14/21       518.6       10.4       11.1       181       12.1        11.0       3,098        9.3       1.62        0.28
Lake Michigan CU                 MI     Pilot Bancshares Inc.              FL       06/16/21        99.9       12.3          -       187        9.8   

19.1 656 8.1 1.36 0.30 Simmons First National Corp. AR Triumph Bancshares Inc.

TN 06/07/21 132.1 17.2 - 153 8.9

- 894 9.7 0.98 0.92 Simmons First National Corp. AR Landmark Community Bank

TN 06/07/21 146.4 14.0 - 143 8.0

- 1,007 10.1 1.08 0.66 United Bankshares Inc.

           WV     Community Bankers Trust Corp       VA       06/03/21       305.3       14.2       13.5       168       11.7        41.9       1,699       10.2       1.28        0.71
First Bancorp                    NC     Select Bancorp Inc.                NC       06/01/21       314.3       23.8       14.4       185       11.0        28.6       1,832        9.4       0.79        0.56
United Community Banks Inc.      GA     Aquesta Financial Holdings         NC       05/27/21       130.6       18.1          -       217       11.8        66.5         752        6.2       1.01        0.76
Peoples Bancorp Inc.             OH     Premier Financial Bancorp Inc.     WV       03/29/21       292.4       12.9          -       139        4.9   

9.5 1,946 11.0 1.20 1.16 Seacoast Banking Corp. of FL FL Legacy Bank of Florida


FL       03/23/21       106.6       18.1          -       187       16.2           -         533       10.7       1.15        0.32
BancorpSouth Bank                MS     FNS Bancshares Inc.                AL       01/13/21       108.4       19.4          -       154        6.5        35.1         786        9.1       0.77        0.64






 1) Reflects bank level data


Note: Includes bank and thrift transactions announced since January 1, 2021 with
targets headquartered in the southeast with total assets between $500M and $5.0B
and disclosed deal values; excludes transactions with targets headquartered
outside of the continental U.S. and transactions with non-bank buyers

6. The disclosure under the heading "Proposal 1: The Merger - Opinion of

Seacoast's Financial Advisor - Net Present Value Analyses" is supplemented by

adding the following underlined text to the paragraph spanning pages 51 and 52


    of the Definitive Proxy Statement:




Piper Sandler performed an analysis that estimated the net present value of a
share of Seacoast common stock assuming Seacoast performed in accordance with
publicly available mean analyst balance sheet and earnings per share estimates
for Seacoast for the years ending December 31, 2022 and December 31, 2023 with a
long-term annual net income and balance sheet growth rate for the years ending
December 31, 2024 through December 31, 2026, as provided by the senior
management of Seacoast. To approximate the terminal value of a share of Seacoast
common stock at December 31, 2026, Piper Sandler applied price to 2026 earnings
multiples ranging from 10.0x to 17.5x and multiples of 2026 tangible book value
ranging from 150% to 225%. Piper Sandler selected these price to earnings and
tangible book value multiples based on Piper Sandler's review of, among other
matters, the trading multiples of selected companies that Piper Sandler deemed
to be comparable to Seacoast. The terminal values were then discounted to
present values using different discount rates ranging from 8.0% to 12.0%, which
were chosen to reflect different assumptions regarding required rates of return
of holders or prospective buyers of Seacoast common stock. As illustrated in the
following tables, the analysis indicated an imputed range of values per share of
Seacoast common stock of $19.50 to $38.27 when applying multiples of earnings
and $24.30 to $41.74 when applying multiples of tangible book value.



7. The disclosure under the heading "Proposal 1: The Merger - Opinion of

Seacoast's Financial Advisor - Net Present Value Analyses" is supplemented by

adding the following underlined text to the last full paragraph on page 52 of


    the Definitive Proxy Statement:




Piper Sandler also performed an analysis that estimated the net present value
per share of Professional common stock, assuming Professional performed in
accordance with certain financial projection assumptions for Professional for
the years ending December 31, 2022 through December 31, 2026, as provided by the
senior management of Seacoast. To approximate the terminal value of a share of
Professional common stock at December 31, 2026, Piper Sandler applied price to
2026 earnings multiples ranging from 8.0x to 13.0x and multiples of 2026
tangible book value ranging from 125% to 175%. Piper Sandler selected these
price to earnings and tangible book value multiples based on Piper Sandler's
review of, among other matters, the trading multiples of selected companies that
Piper Sandler deemed to be comparable to Professional.The terminal values were
then discounted to present values using different discount rates ranging from
9.0% to 13.0%, which were chosen to reflect different assumptions regarding
required rates of return of holders or prospective buyers of Professional common
stock. As illustrated in the following tables, the analysis indicated an imputed
range of values per share of Professional common stock of $11.71 to $22.58 when
applying multiples of earnings and $18.31 to $30.41 when applying multiples

of
tangible book value.








8. The disclosure under the heading "Proposal 1: The Merger - Opinion of

Professional's Financial Advisor -Relevant Public Companies Analysis" is

amended by deleting the bulleted list of company names spanning pages 60 and


    61 of the Definitive Proxy Statement and replacing it with the following:




                                                                                                                                                                  Balance Sheet                                                                                                   Asset Quality                      Profitability / Earnings (MRQ)
                                                                                               LTM Loan                                                                           Tier 1                           NIB                  TBV + Dividends                                          ALLL /          Cost of              Net              Fee
                                                                                 Total           Growth        Securities          TCE /         Loans /           CRE/         Leverage           TRBC         Dep. /         1-Year         3-Year         5-Year              NPAs/            Loans            Total         Interest         Income /
                                                                                Assets        (ex. PPP)          / Assets             TA        Deposits           TRBC            Ratio          Ratio           Dep.           CAGR           CAGR           CAGR          Assets(1)        (ex. PPP)

        Deposits           Margin          Revenue
            Company                            Ticker        City, State          ($M)              (%)               (%)            (%)             (%)            (%)              (%)            (%)            (%)            (%)            (%)            (%)                (%)              (%)              (%)              (%)              (%)
. . .

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