<SEC-DOCUMENT>0001704084-22-000033.txt : 20220303
<SEC-HEADER>0001704084-22-000033.hdr.sgml : 20220303
<ACCEPTANCE-DATETIME>20220303110709
ACCESSION NUMBER:		0001704084-22-000033
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20220302
FILED AS OF DATE:		20220303
DATE AS OF CHANGE:		20220303

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Rand Edward Lewis Jr
		CENTRAL INDEX KEY:			0001307649

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-16533
		FILM NUMBER:		22707165

	MAIL ADDRESS:	
		STREET 1:		100 BROOKWOOD PLACE
		CITY:			BIRMINGHAM
		STATE:			AL
		ZIP:			35209

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PROASSURANCE CORP
		CENTRAL INDEX KEY:			0001127703
		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
		IRS NUMBER:				631261433
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		100 BROOKWOOD PLACE
		CITY:			BIRMINGHAM
		STATE:			AL
		ZIP:			35209
		BUSINESS PHONE:		2058774400
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_164632360746395.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
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<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2022-03-02</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001127703</issuerCik>
        <issuerName>PROASSURANCE CORP</issuerName>
        <issuerTradingSymbol>PRA</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001307649</rptOwnerCik>
            <rptOwnerName>Rand Edward Lewis Jr</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/OPROASSURANCE CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>100 BROOKWOOD PLACE</rptOwnerStreet2>
            <rptOwnerCity>BIRMINGHAM</rptOwnerCity>
            <rptOwnerState>AL</rptOwnerState>
            <rptOwnerZipCode>35209</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President &amp; CEO</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2022-03-02</value>
                <footnoteId id="F1"/>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>5720</value>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>24.77</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>141695</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2022-03-02</value>
                <footnoteId id="F1"/>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2412</value>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>24.77</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>139283</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2022-03-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>40371</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>40371.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>40371</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeTransaction>
        <derivativeHolding>
            <securityTitle>
                <value>Restricted Stock Units</value>
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            <conversionOrExercisePrice>
                <footnoteId id="F4"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F4"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F4"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>19301.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>19301</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F5"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F5"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>14526.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>14526</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2022-03-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>5720</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>5720.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The Restricted Stock Units (RSU) vested, and were thus acquired, on March 2, 2022 when ratified by the ProAssurance Corporation Board of Directors. The RSUs were priced on February 22, 2022, the day following ProAssurance Corporation's earnings announcement, per the direction of the Compensation Committee of the ProAssurance Corporation Board of Directors.</footnote>
        <footnote id="F2">Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of ProAssurance Corporation common stock, issuable from the ProAssurance Corporation 2014 Equity Incentive Compensation Plan. The RSUs will vest if the reporting person remains continuously employed by ProAssurance or one of its subsidiaries until December 31, 2021 (three years from date of grant). Vesting will accelerate upon termination of employment as the result of (i) death; (ii) disability; or (iii) Good Reason, as defined in the reporting person's employment agreement with ProAssurance Corporation, or by action of the Compensation Committee of the ProAssurance Corporation Board of Directors. The RSUs will be settled in shares of ProAssurance Common Stock and in cash, with the cash portion being approximately equal to the federal, state, and local taxes.</footnote>
        <footnote id="F3">Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of ProAssurance Corporation common stock, issuable from the ProAssurance Corporation 2014 Equity Incentive Compensation Plan. The RSUs will vest if the reporting person remains continuously employed by ProAssurance or one of its subsidiaries until December 31, 2024 (three years from date of grant). Vesting will accelerate upon termination of employment as the result of (i) death; (ii) disability; or (iii) Good Reason, as defined in the reporting person's employment agreement with ProAssurance Corporation, or by action of the Compensation Committee of the ProAssurance Corporation Board of Directors. The RSUs will be settled in shares of ProAssurance Common Stock and in cash, with the cash portion being approximately equal to the federal, state, and local taxes.</footnote>
        <footnote id="F4">Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of ProAssurance Corporation common stock, issuable from the ProAssurance Corporation 2014 Equity Incentive Compensation Plan. The RSUs will vest if the reporting person remains continuously employed by ProAssurance or one of its subsidiaries until December 31, 2023 (three years from date of grant). Vesting will accelerate upon termination of employment as the result of (i) death; (ii) disability; or (iii) Good Reason, as defined in the reporting person's employment agreement with ProAssurance Corporation, or by action of the Compensation Committee of the ProAssurance Corporation Board of Directors. The RSUs will be settled in shares of ProAssurance Common Stock and in cash, with the cash portion being approximately equal to the federal, state, and local taxes.</footnote>
        <footnote id="F5">Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of ProAssurance Corporation common stock, issuable from the ProAssurance Corporation 2014 Equity Incentive Compensation Plan. The RSUs will vest if the reporting person remains continuously employed by ProAssurance or one of its subsidiaries until December 31, 2022 (three years from date of grant). Vesting will accelerate upon termination of employment as the result of (i) death; (ii) disability; or (iii) Good Reason, as defined in the reporting person's employment agreement with ProAssurance Corporation, or by action of the Compensation Committee of the ProAssurance Corporation Board of Directors. The RSUs will be settled in shares of ProAssurance Common Stock and in cash, with the cash portion being approximately equal to the federal, state, and local taxes.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Lee M. Pope, POA for the Reporting Person</signatureName>
        <signatureDate>2022-03-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
