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P-END-RILA-SRP(10/21)  PRUCO LIFE INSURANCE COMPANY, PHOENIX, ARIZONA    STEP RATE PLUS INDEX STRATEGY ENDORSEMENT    ANNUITY NUMBER: [001-00001]    EFFECTIVE DATE: [Contract Issue Date]    This Endorsement is made part of your Annuity and describes the Step Rate Plus Index Strategy. The  Indices and values provided below are applicable to your Annuity on the Effective Date. Other Buffers,  Indices, and Index Terms may be available and may vary in the future. If the Initial Index Strategy Base  below is equal to $0.00, there is no allocation to that Index Strategy as of the Effective Date.  We are  providing this Endorsement to help describe the Step Rate Plus Index Strategy in the event you wish to  allocate funds to this type of Index Strategy in the future as described in your Annuity, and so long as this  Index Strategy is still available. There are no explicit charges for allocations to the Step Rate Plus Index  Strategy.     Index Index Value  on  Effective  Date  Initial  Index  Term  Initial Index  Strategy  Base  Initial  Step  Rate  Participation  Rate  Buffer  [S&P 500® Index,  Price Return  (SPX)]      [XXXX.XX]    [1 Year]    [$XXXXX.XX]    [XX.XX%]    [XX.XX%]    [5.00%]    [S&P 500® Index,  Price Return  (SPX)]      [XXXX.XX]    [1 Year]    [$XXXXX.XX]    [XX.XX%]    [XX.XX%]    [10.00%]  [MSCI EAFE Index,  Price Return  (MXEA)]      [XXXX.XX]    [1 Year]    [$XXXXX.XX]    [XX.XX%]    [XX.XX%]    [5.00%]      Step Rate Plus: The Step Rate is a declared rate that may be credited to an Index Strategy for an Index  Strategy Term if the Index Return is between zero and the declared Step Rate.  The Initial Step Rate is  shown above and is applicable for one Index Term as of the Issue Date.  In the event the Index Return  exceeds the declared Step Rate, the Index Credit will be the greater of the declared Step Rate and the  Index Return multiplied by the Participation rate as described in the Index Credit section below.    Guaranteed Minimum Step Rate: [1.00%]    Participation Rate: The Participation Rate is the percentage of an Index increase that will be used in  calculating the Index Credit to the Index Strategy Base at the end of an Index Strategy Term when the Index  Return is greater than the declared Step Rate. The Participation Rate may vary by Index and Index Strategy  Term. The initial Participation Rates are shown above and are applicable for the Index Term as of the Issue  Date.    Guaranteed Minimum Participation Rate: [60%]      Buffer: The Buffer limits the amount of negative Index Credit that may be applied to the Index Strategy  Base on any Index Strategy End Date.  The Buffer may vary by Index and Index Strategy Term. The  Buffer is shown above.     Index Credit: On each Index Strategy End Date, we will calculate the Index Credit, if any, to be credited  to the Index Strategy Base. The Index Credit is calculated by comparing the Step Rate, Participation  Rate, if applicable, and Buffer to the percentage change in the Index, known as the Index Return. The  Index Return is determined by (A – B) / B, where:    A = the Index Value on the Index Strategy End Date  B = the Index Value on the Index Strategy Start Date    





 






P-END-RILA-SRP(10/21)  If the Index Return is zero or positive and less than or equal to the declared Step Rate, then the Index  Credit is equal to the Step Rate.  If the Index Return is greater than the Step Rate, the Index Credit is  equal to the greater of the Index Return multiplied by the Participation Rate and the Step Rate. If the  Index Return is negative, but within the Buffer, then the Index Credit is zero.  Otherwise, if the Index  Return is negative, the Index Credit is equal to the Index Return plus the Buffer.    Subsequent Index Strategy Terms: We will declare Step Rates and Participation Rates for each  subsequent Index Strategy Term. The new Step Rates and Participation Rates may be higher or lower  than the initial Step Rates and Participation Rates and will be never be lower than the Guaranteed  Minimum Step Rate and Guaranteed Minimum Participation Rate.    Step Rate Plus Index Strategy Interim Value    When you take a Partial Withdrawal, Surrender your Annuity, request a transfer, or annuitize your Annuity  between Index Strategy Start and End Dates, we will use an Interim Value to determine the fair market  value of your Index Strategy on the Valuation Day of the transaction. The Interim Value is also used in the  event we pay a death claim to your beneficiaries during an Index Term.    The Interim Value for the Step Rate Plus Index Strategy is equal to the sum of (1) and (2),  where:  (1) Is the fair value of the Index Strategy Base on the Valuation Day the Interim Value is calculated. It  is determined as (A – B) multiplied by [(1 + C) divided by (1 + D)]E, where:    A. The Index Strategy Base on the Valuation Day the Interim Value is calculated;  B. The fair value of the replicating portfolio of options under initial market conditions, with  updated time to expiry;  C. The Market Value Index Rate on the Index Strategy Start Date;  D. The Market Value Index Rate on Valuation Day the Interim Value is calculated; and  E. The total days remaining in the Index Strategy Term divided by 365.    (2) Is the fair value of the replicating portfolio of options    The fair value of the Index Strategy Base is meant to represent the market value of the assets, other than  hedge assets, supporting each Index Strategy. It includes a market value adjustment that reflects  movements in the interest rates and credit spreads.    The Market Value Index Rate will apply on a uniform basis for a class of contract owners in the same  Index Strategy and will be administered in a non-discriminatory manner.     The Market Value Index Rate is the [Bloomberg Barclays U.S. Intermediate Credit Index] rate. The  [Bloomberg Barclays U.S. Intermediate Credit Index] rate is the rate using a set duration. The duration is  set to represent the duration of the investments supporting the Index Strategy and may not match the  actual length of the Index Strategy.     If the [Bloomberg Barclays U.S. Intermediate Credit Index] rate is not published for a particular day, then  we will use the rate on the next day it is published. If the [Bloomberg Barclays U.S. Intermediate Credit  Index] rate is no longer published, or is discontinued, then we may substitute another suitable method for  determining this component of the Interim Value.    The fair values of the replicating portfolio of options are designated by us and are used to estimate the  market value of the possibility of gain or loss on the Index Strategy End Date. The value may be positive  or negative.     Signed for the Company and made a part of the Contract as of the Effective Date.    PRUCO LIFE INSURANCE COMPANY    [ ]  Secretary