Form 485BPOS MASSMUTUAL ASCEND LIFE

There is a risk of loss of principal and prior earnings due to the negative performance of an Index if you allocate your Account Value to an Indexed Strategy. Such a loss may be significant. This risk exists because, at the end of that Term, you can lose up to 10% of the money allocated to a ‑10% Floor Strategy, up to 90% of the money allocated to a 10% Buffer Strategy, or up to 80% of the money allocated to a 20% Buffer Strategy. If you allocate money to one or more Indexed Strategies over multiple Terms, you may lose money each Term, which may result in a cumulative loss of your principal and any prior earnings that is greater than 10% for a ‑10% Floor Strategy, greater than 90% for a 10% Buffer Strategy, or greater than 80% for a 20% Buffer Strategy.

The S&P 500 1‑Year ‑10% Floor with Cap Indexed Strategy will always be available. At the end of a Term, we may stop offering any other Indexed Strategy. Consequently, any other Indexed Strategy described in this prospectus may not be available after the end of the initial Term. Indexed Strategies with 5‑year Terms will only be available for Terms beginning in the first Contract Year. We have the right to replace the Index associated with an Indexed Strategy under certain circumstances.

In the future, we may offer a new Strategy with a Floor that is more or less negative than ‑10%, or that has a Buffer of more or less than 10%. However, we will not offer a new Buffer Strategy that offers less protection against loss than a 5% Buffer, or a Floor Strategy that offers less protection against loss than a ‑20% Floor.

The risk of loss of principal will be greater if you allocate money to a Strategy with a lower Floor or less of a Buffer. In the worst-case scenario, we could eliminate all of the current Indexed Strategies other than the S&P 500 1‑Year ‑10% Floor with Cap Indexed Strategy and offer other new Indexed Strategies with more negative Floors or lesser Buffers subject to the limits noted above. In those circumstances, your risk of loss of principal would increase and you may earn a return that is lower than the return your investments would have earned if they had been invested in the other Indexed Strategies that are currently available unless you had already limited your allocation to the S&P 500 1‑Year ‑10% Floor with Cap Indexed Strategy and the Declared Rate Strategy and remain in those Strategies. In addition, a reduction in the number of Indexed Strategies that are available may reduce your opportunity to increase your Contract value. If you choose to Surrender the Contract because of changes in the number and/or type of available Indexed Strategies, your Surrender may be subject to Early Withdrawal Charges, Daily Value Percentage adjustments, and taxes, and if before age 59¹⁄₂, a penalty tax. If you purchase another annuity contract, it may have different features, fees, and risks than this Contract.

The Contract is a deferred annuity, which means the Annuity Payout Benefit will begin on a future date. The Contract is unsuitable as a short-term savings vehicle. We designed the Contract to be a long-term investment that you can use to help build a retirement nest egg and provide income for retirement. The limitations, adjustments, and charges included in the Contract reflect its long-term nature.

The Contract and its Crediting Strategies may not be appropriate for investors who plan to take withdrawals (including automated withdrawals and required minimum distributions) during the first five Contract Years, because of the assessment of Early Withdrawal Charges, or who plan to take withdrawals during Indexed Strategy Terms, because of the application of the Daily Value Percentage. Withdrawals are also subject to the possibility of adverse tax consequences.

Before the end of the Term, if you were to take a withdrawal, Surrender or annuitize the Contract, elect a Performance Lock, or a Death Benefit becomes payable, the Daily Value Percentage calculation may cause the value of a Strategy to be less than 90% of the money allocated to a ‑10% Floor Strategy, or less than 10% for money allocated to a 10% Buffer Strategy, or less than 20% for money allocated to a 20% Buffer Strategy. In extreme circumstances, an Indexed Strategy could have no value before the end of a Term due to the Daily Value Percentage, meaning that you would suffer the loss of 100% of your principal and any prior earnings in a Strategy if, before the end of the Term, you were to Surrender or annuitize your Contract, elect a Performance Lock, or a Death Benefit becomes payable.

There is also a risk of loss of principal and prior earnings if you Surrender your Contract or take a withdrawal from it during the first five Contract Years and an Early Withdrawal Charge applies. This risk exists for each Crediting Strategy. An Early Withdrawal Charge will reduce the value of the Strategy. This reduction may exceed any prior earnings.

An investment in an Indexed Strategy is not an investment in the Index or in the investments tracked by the Index, and you will not own such investments. Your investment in the Indexed Strategies is subject to the risk of poor performance and can vary depending on the performance of the underlying Indices. Each Indexed Strategy will have its own unique risks, and you should review the available Indexed Strategies carefully before making an investment decision. When you invest in an Indexed Strategy, you will be exposed to certain risks, including the following:

Limits on Positive Index Returns at End of Term

Any increase in the value of an Indexed Strategy at the end of a Term is based on the value of the underlying Index at the final Market Close of the Term. The Cap, Upside Participation Rate, combination thereof, or Trigger Rate may limit the positive Index return, if any, that may be credited to your Contract for a given Term.

If the Index rises for the Term, then at the end of the Term the value of an Indexed Strategy with a Cap but either no Upside Participation Rate or an Upside Participation Rate of 100% will be the Investment Base increased by the rise in the Index, but never more than the Cap for that Term.

If the Index rises for the Term, then at the end of the Term the value of an Indexed Strategy with an Upside Participation Rate but no Cap will be the Investment Base increased by your share of the rise in the Index. Your share of any rise in the Index is equal to the Upside Participation Rate for that Term multiplied by the rise in the Index.

If the Index rises for the Term, then at the end of the Term the value of an Indexed Strategy with both an Upside Participation Rate and a Cap will be the Investment Base increased by your share of the rise in the Index, but never more than the Cap for that Term. Your share of any rise in the Index is equal to the Upside Participation Rate for that Term multiplied by the rise in the Index.

If the Index rises for the Term, then at the end of the Term the value of an Indexed Strategy with a Trigger Rate will be the Investment Base increased by the Trigger Rate for that Term. The Trigger Rate for a Term may be less than the rise in the Index.

A Cap, Upside Participation Rate, combination thereof, or Trigger Rate may result in you earning less than the Index Return. Due to these limitations, in many cases the return on money allocated to an Indexed Strategy with a Cap, or Trigger Rate will not fully reflect the corresponding rise in the Index for the Term and the return on money allocated to an Indexed Strategy with an Upside Participation Rate that is less than 100% will never reflect the entire corresponding rise in the Index for the Term.

A Cap, Upside Participation Rate, or Trigger Rate declared for a Term is for the entire Term for a particular Indexed Strategy. For 5‑year Indexed Strategy, a Cap, Upside Participation Rate, or Trigger Rate applies to the entire Term and is not an annual limit. Indexed Strategies can have different Buffers or Floors, which will impact the Cap, Upside Participation Rate, or Trigger Rate offered on the Indexed Strategies. The Buffer or Floor, as applicable, will never change for a specific Indexed Strategy. If a different Buffer or Floor is introduced, it will be offered on a new Indexed Strategy.

Possibility of Losses Despite Limits on Negative Index Returns

The Buffer or Floor that is applicable to an Indexed Strategy only provides you with limited protection from negative Index performance at the end of a Term. You could lose a significant amount of your principal and/or prior earnings under the Contract despite these limits on negative Index returns.

Under an Indexed Strategy, the maximum amount of loss that you could experience due to negative Index performance at the end of a Term, after taking into account the minimum limits on Index loss currently provided under the Contract, would be up to 10% of the money allocated to a ‑10% Floor Strategy, 90% of the money allocated to a 10% Buffer Strategy, or 80% of the money allocated to a 20% Buffer Strategy. You could lose a significant amount of money if an Index declines in value. At the end of a Term, we may stop offering any Indexed Strategy in our discretion. In the future, we may offer new Indexed Strategies that have less protection against negative Index performance. However, the S&P 500 1‑Year ‑10% Floor with Cap Indexed Strategy will always be available.

You also bear the risk that continued negative Index returns may result in the loss of Account Value over multiple Terms. Given that the Floor or Buffer (as applicable) applies only to a single Term, if an Indexed Strategy is credited with losses for multiple Terms, the cumulative loss may exceed any single Term’s stated limit of the Buffer or Floor. In addition, the limits on downside loss provided by the Floor or Buffer, as applicable, are for the entire Term for a particular Indexed Strategy and are not annual limits.

Before the end of a Term, if you make a withdrawal from an Indexed Strategy, Surrender or annuitize the Contract, elect a Performance Lock, or a Death Benefit becomes payable, you or your beneficiaries (as applicable) will not receive the full protection of the Buffer or Floor in the calculation of the Daily Value Percentage. In order to receive the full protection, the particular transaction must occur on at the Term end date.

Index Changes Over the Course of Term

At the end of a Term, unless you have made a Performance Lock election, we measure the Index change by comparing the Index value at the start of the Term to the Index value at the end day of the Term. This means that if the Index value is lower at the end of the Term, you may experience negative or flat performance even if the Index rose through some, or most, of the Term.

The Contract offers you the opportunity to allocate funds to Indexed Strategies for one year or five-year Terms. For Indexed Strategies with five-year Terms, changes in Strategy value as a direct result of Index performance will only be measured at the start and end of a five-year period and not annually.

Limits on Strategy Value Before End of Term

Before the end of a Term, we calculate the value of an Indexed Strategy using a Daily Value Percentage that is not tied directly to the underlying Index. The purpose of this calculation is to shift any potential investment loss on the Company’s general account assets that support the indexed option guarantees from the Company to you when amounts are removed prematurely from an Indexed Strategy. The Daily Value Percentage is applied when you take a withdrawal, Surrender or annuitize your Contract, elect a Performance Lock, or when a Death Benefit becomes payable on a date other than the end of a Term. The Daily Value Percentage includes the prices of hypothetical options. Such option prices will vary from day to day. Any Strategy value calculated using the Daily Value Percentage before the end of a Term will almost always be less, perhaps significantly less, than the value suggested by the rise or fall of the Index. You will bear the risk that the Daily Value Percentage may decrease the Strategy value before the end of a Term. In extreme circumstances, an Indexed Strategy may have no value before the end of a Term, meaning that you would suffer the loss of 100% of your principal and any prior earnings in that Strategy if, before the end of the Term, you were to Surrender or annuitize your Contract, elect a Performance Lock, or a Death Benefit becomes payable.

The Daily Value Percentage includes deductions for the Residual Option Cost and the Trading Cost, which means that any Strategy value before the end of a Term will almost always be less, perhaps significantly less, than the value suggested by the rise or fall of the Index. Because the Residual Option Cost is a decreasing value, its negative impact on Strategy values will be more pronounced at the start of a Term than at the end of that Term. In addition, even if the Index rises, the Strategy value may be less than the Investment Base due to these deductions.

The Daily Value Percentage is used to calculate the Strategy values if, before the end of a Term, you were to take a withdrawal, Surrender or annuitize your Contract, elect a Performance Lock, or a Death Benefit becomes payable. Accordingly, the Residual Option Cost and Trading Cost will have a negative effect on such values.

For more information on how we determine the prices of hypothetical options, see “Option Prices” in the Contract Adjustments section of the Statement of Additional Information.

No Increases in Value After Performance Lock

If you make a Performance Lock election, the Daily Value Percentage will be locked for the remainder of the Term. This means that you will experience flat performance through the remainder of the Term even if the Net Option Value increases, you will not benefit from the continued decline in the Residual Option Cost, and your ending Strategy value will not be based on the ending Index value on the last day of the Term.

You may access Daily Value Percentage information for the Indexed Strategies as of the previous day’s Market Close by calling 1‑800‑789‑6771 or by accessing your account online at www.massmutualascend.com. Before electing a Performance Lock, you should consult with a financial advisor.

A Performance Lock election is not effective until the Market Close immediately following our receipt of your request, or, if you specifically request it, on the second Market Close following our receipt of your request. As a result, you will not be able to determine the Daily Value Percentage that will be locked in at the time you make your election. You bear the risk that the Daily Value Percentage that is locked in will be lower than the Daily Value Percentage you last obtained, and lower than the potential Strategy value you would receive at the end of the Term, or lower than the potential Strategy value would have been had you elected to lock effective on a different Market Close. If you exercise the Performance Lock feature at a time when the Strategy value has declined, you will lock in any loss, which could be significant.

Limits on Reallocations

You can only reallocate money among Crediting Strategies at the end of a Term. If you want to take money out of a Crediting Strategy during a Term, you must Surrender your Contract or take a withdrawal. If you choose to Surrender your Contract or take a withdrawal, your Surrender or withdrawal may be subject to Early Withdrawal Charges, Daily Value Percentage adjustment, taxes, and if before age 59¹⁄₂, a penalty tax. A withdrawal before the end of a Term will proportionally reduce the Investment Base for an Indexed Strategy and the Death Benefit Return of Premium Guarantee, and this proportional reduction could be larger than the dollar amount of the withdrawal.

Effect of Surrenders

If you Surrender your Contract at any time during the first five Contract Years and an Early Withdrawal Charge applies, the amount payable will reflect a deduction for the charge. All or some portion of a withdrawal may be subject to federal and state income taxes and, if taken before age 59¹⁄₂, may be subject to a 10% federal penalty tax. If you Surrender your Contract at the end of a Term, the amount payable will reflect any rise or fall of the applicable Indexes over the Term, applicable Positive Return Factor rates and Negative Return Factor rates, and any Early Withdrawal Charge. If you Surrender your Contract before the end of a Term, the amount payable will reflect the applicable Daily Value Percentage, which could significantly reduce the amount you receive upon Surrender, and any Early Withdrawal Charge.

Effect of All Withdrawals

If you take a withdrawal at any time, we will reduce your Account Value by an amount equal to that withdrawal. If you take a withdrawal during the first five Contract Years and an Early Withdrawal Charge applies, we will also reduce your Account Value by the amount of the Early Withdrawal Charge. A reduction in the Account Value will reduce the amount payable upon Surrender, applied to the Annuity Payout Benefit, or payable as the Death Benefit. In addition, a withdrawal will proportionally reduce the Death Benefit Return of Premium Guarantee and this proportional reduction could be larger than the dollar amount of the withdrawal.

Each withdrawal from an Indexed Strategy, including withdrawals available under the Free Withdrawal Allowance, withdrawals that qualify for a waiver of the Early Withdrawal Charge, withdrawals under an automated withdrawal program and withdrawals to satisfy a required distribution, will reduce the Strategy value by the dollar amount of the withdrawal and any related Early Withdrawal Charge. If taken from an Indexed Strategy before the end of a Term, the reduction in Strategy value is determined by the Daily Value Percentage on the date of the withdrawal, or on the locked Daily Value Percentage if you have made a Performance Lock election. Unless you have made a Performance Lock election (which, except for withdrawals, freezes the Strategy value until the end of the Term), a withdrawal before the end of the Term should almost always result in a greater reduction in Strategy value than if the withdrawal had happened at the end of the Term under otherwise identical circumstances. The Investment Base used to calculate the Strategy value through the end of that Term will be reduced in proportion to the reduction in the Strategy value. This means the dollar amount of the proportional reduction in the Investment Base will be more, maybe significantly more, than the dollar amount of the withdrawal and the Early Withdrawal Charge if the Strategy value immediately before the withdrawal is less than the Investment Base. A reduction in the Investment Base will limit the effect of any rise or fall in the Index for the remainder of the Term.

All or some portion of a withdrawal may be subject to federal and state income taxes and, if taken before age 59¹⁄₂, may be subject to a 10% federal penalty tax. For a further discussion of the tax treatment of withdrawals and Surrenders, please see the Federal Tax Considerations section on page 70.

Early Withdrawal Charges will reduce Indexed Strategy values and may result in losses that exceed the Floor or reduce the protection of the Buffer.

Timing and Effect of Withdrawals Before End of Term

Before taking a withdrawal, you should consider the dates on which the Term(s) of your Indexed Strategies end relative to the timing of that withdrawal.

Each withdrawal from an Indexed Strategy before the end of a Term, including withdrawals available under the Free Withdrawal Allowance, withdrawals that qualify for a waiver of the Early Withdrawal Charge, withdrawals under an automated withdrawal program and withdrawals to satisfy a required distribution, will proportionally reduce the Investment Base.

In order for you to avoid the application of the Daily Value Percentage in calculating the value of an Indexed Strategy, you need to schedule withdrawals to coincide with Term end dates. The Contract is intended for long-term investment purposes and the Contract and its Indexed Strategies may not be appropriate for investors who plan to take withdrawals (including automated withdrawals and required minimum distributions) during the first five Contract Years, because of the assessment of Early Withdrawal Charges, or who plan to take withdrawals during Indexed Strategy Terms, because of the application of the Daily Value Percentage adjustment.

No Ability to Determine Contract Values in Advance

We will process any withdrawal request at the first Market Close after receipt of your Request in Good Order. This means you will not be able to determine in advance the amount of the proportional reduction in the Investment Base due to the withdrawal. Likewise, you will not be able to determine in advance the amount payable upon Surrender, to be applied to the Annuity Payout Benefit or payable as the Death Benefit.

A Performance Lock election is effective on the Market Close immediately following our receipt of your Request in Good Order, or, if you specifically request it, on the second Market Close following our receipt of your Request in Good Order. This means you will not be able to determine in advance the locked Daily Value Percentage that will be applicable to the Indexed Strategy at the time you make a Performance Lock election. The Daily Value Percentage may be higher or lower at the time the Performance Lock election becomes effective than it was when you submitted your Request in Good Order. The Daily Value Percentage on the Market Close immediately following our receipt of your Request in Good Order may be higher or lower than the Daily Value Percentage on the second Market Close following our receipt of your Request in Good Order.

Changes in Positive Return Factors and Trading Cost

We set the Positive Return Factor rates (Caps, Upside Participation Rates, and Trigger Rates) for each new Term of the Indexed Strategies. The Positive Return Factor rate(s) for a new Term of an Indexed Strategy may be lower than its Positive Return Factor rate(s) for the current Term. A Cap may be as low as 1%. A Trigger Rate may be as low as 1%. An Upside Participation Rate may be as low as 5%. You risk the possibility that the Positive Return Factor rate(s) for a new Term may be lower than you would find acceptable.

You bear the risk of any negative effect on the Daily Value Percentage and Indexed Strategy values of an increase in the Trading Cost.

Unavailable Indexed Strategies

At the end of a Term, we may stop offering any Indexed Strategy other than the S&P 500 1‑Year ‑10% Floor with Cap Indexed Strategy. Consequently, any other Indexed Strategy you selected may not be available after the end of a Term. In such an event, the Company will amend the prospectus.

The 5‑Year Indexed Strategies are not available for Terms beginning after the first Contract Year.

When an Indexed Strategy is unavailable for the next Term, you may choose to reallocate the funds held in that Strategy. At least 30 days before the end of each Term, we will send you a written notice with information about the Indexed Strategies that will be available for the next Term.

We may establish minimum and maximum amounts or percentages that may be applied to a given Indexed Strategy. This means that an Indexed Strategy you selected may not be available after the end of a Term because the amount to be applied to that Strategy is less than the minimum we set for the new Term. Likewise, the amount to be applied to an Indexed Strategy may be limited by the maximum we set for the new Term, and the amount over that maximum would be reallocated. At least 30 days before the end of each Term, we will send you a written notice with information about any maximum or minimum that will apply for the next Term. No minimum or maximum shall apply to the S&P 500 1‑year ‑10% Floor with Cap Indexed Strategy. No minimum shall apply to the Declared Rate Strategy. If funds cannot be applied to a Strategy due to the minimum or maximum we set for the next Term and you do not request a reallocation of those funds, we will apply the funds for the new Term in the same manner as if the given Indexed Strategy were no longer offered.

If at the end of a Term, an amount cannot be applied to a new Term of that same Indexed Strategy because the Strategy will not be available or because the amount is under the minimum or over the maximum for that Strategy, and you do not request a permissible reallocation of that amount, we will reallocate that amount to another Indexed Strategy as described in the Default Strategy Allocations section on page 34. In these cases, any funds that we allocate to the Declared Rate Strategy may earn a return that is lower than the return those funds would have earned if they had been applied to the Indexed Strategy you selected.

If you choose to Surrender the Contract because of changes in the number and/or type of available Indexed Strategies, or because you fail to request a permissible reallocation and you are unhappy with the default allocation, your Surrender may be subject to Daily Value Percentage adjustments, Early Withdrawal Charges, and taxes, and if taken before age 59¹⁄₂, a penalty tax. There may be tax consequences if you Surrender your Contract. You should seek advice on tax questions based on your particular circumstances from a tax advisor.

Replacement of an Index

We may replace or adjust an Index or rate, or the specified market to measure it, if the external market index or rate stops being published or the publication schedule is changed, the calculation of the external market index or rate is changed significantly, the investment fund terminates or there is a significant change in its investment objectives, strategies, or operations, the investment fund or commodity stops being traded on a specified market or the specified market declines in importance, we lose our license or permission to use the index or rate, we determine that hedging instruments are difficult to acquire or the cost of hedging becomes excessive, or under other circumstances approved by regulators. We may do so at the end of a Term or during a Term. If we replace or adjust an Index, we will provide notice to you and amend the prospectus. If we replace or adjust an Index during a Term, we will calculate any rise or fall in the Index using the old Index up until the replacement date. After the replacement or adjustment date, we will calculate any rise or fall in the Index using the new Index, but with a modified start of Term value for the new Index. The modified start of Term value for the new Index will reflect the rise or fall in the Index for the old Index from the start of the Term to the replacement or adjustment date. The performance of the new Index may not be as good as the performance of the old Index. As a result, funds allocated to an Indexed Strategy may earn a return that is lower than the return they would have earned or experience losses greater than the losses they would have experienced if there had been no replacement or adjustment.

Involuntary Termination of Contract

If your Account Value on any anniversary of the initial Strategy Application Date is below the minimum value of $5,000 for any reason, we may terminate your Contract on that anniversary. If your Contract has Terms that end on the same date because you made only one Purchase Payment, any involuntary termination will occur on that date. If your Contract has Terms that end on different dates because you made more than one Purchase Payment, any involuntary termination will occur on one of those dates, which will be the end of one Term but not the end of the other Terms. In this case, the Surrender Value payable upon termination of your Contract will reflect the Daily Value Percentages used to calculate the values of Indexed Strategies with Terms that are not ending on the termination date.

No Direct Investment in S&P 500 Index

When you allocate money to an Indexed Strategy that uses the S&P 500 Index, you will not be investing in that Index, or in any stock included in that Index. The S&P 500 Index is calculated without taking into account dividends paid on stocks that make up the S&P 500 Index. In addition, because the performance of an S&P 500 Indexed Strategy is linked to the performance of the S&P 500 Index and not the performance of the stocks included in the Index, your return may be less than that of a direct investment in such stocks. In addition, due to the same limitations, your return may be less than that of a direct investment in a fund that tracks the S&P 500 Index. Due to the Positive Return Factors, any positive return may be less than the performance of the S&P 500 Index or a direct investment in the stocks included in the Index.

No Direct Investment in an iShares ETF

When you allocate money to an Indexed Strategy that uses the iShares MSCI EAFE ETF or iShares U.S. Real Estate ETF, you will not be investing in that exchange-traded fund, the securities or other assets held by the fund, in any underlying index tracked by the fund, or in the securities or other assets held by such underlying index. In addition, because the performance of an iShares ETF is linked to the performance of the share price of the ETF, which is determined by trading on the exchange, and not the performance of its investment portfolio, its underlying index or the components of that index, your return may be less than that of a direct investment in the securities or other assets held by the fund or a direct investment in the components of the fund’s underlying index. In addition, due to the same limitations, your return may be less than that of a direct investment in the fund. Due to the Positive Return Factors, any positive return may be less than the performance of the fund or its investment portfolio.

No Direct Investment in SPDR Gold Shares ETF

When you allocate money to an Indexed Strategy that uses the SPDR Gold Shares ETF, you will not be investing in that exchange-traded fund or in gold. In addition, because the performance of the SPDR Gold Shares ETF is linked to the performance of the share price of the ETF, which is determined by trading on the exchange, and not the performance of its investment portfolio, its underlying index or the components of that index, your return may be less than that of a direct investment in the securities or other assets held by the fund or a direct investment in the components of the fund’s underlying index. In addition, due to the same limitations, your return may be less than that of a direct investment in the fund. Due to the Positive Return Factors, any positive return may be less than the performance of the fund or its investment portfolio.

No Direct Investment in First Trust Barclays Edge Index

When you allocate money to an Indexed Strategy that uses the First Trust Barclays Edge Index, you will not be investing in that Index, or in any stock or bonds included in that Index. The First Trust Barclays Edge Index is calculated assuming that dividends paid on stocks that make up the First Trust Barclays Edge Index are reinvested. In addition, because the performance of the First Trust Barclays Edge Indexed Strategy is linked to the performance of the First Trust Barclays Edge Index and not the performance of the stocks and bonds included in the Index, and because the Index is an “excess return index” that subtracts a risk-free interest rate from the price and dividend return of the securities, your return may be less than that of a direct investment in such stocks and bonds. Due to the Positive Return Factors, any positive return may be less than the performance of the First Trust Barclays Edge Index.

Divergence of Performance

The performance of an Indexed Strategy will diverge from the performance of the underlying Index because changes in the value of an Indexed Strategy at the end of a Term are subject to Positive Return Factors and Negative Return Factors, or the Index change required to qualify for the Trigger Rate and because changes in the value of an Indexed Strategy before the end of a Term are based on the Daily Value Percentage.

Money allocated to an Indexed Strategy that uses the S&P 500 Index or the First Trust Barclays Edge Index is subject to the risk that the market value of the underlying securities that comprise the applicable Index may decline over a Term. Likewise, money allocated to an Indexed Strategy that uses the iShares MSCI EAFE ETF, the iShares U.S. Real Estate ETF, or the SPDR Gold Shares ETF is subject to the risk that the fund’s share price may decline over a Term. The level of the S&P 500 Index and the First Trust Barclays Edge Index and the share prices of the SPDR Gold Shares ETF, iShares MSCI EAFE ETF and the iShares U.S. Real Estate ETF may be volatile. Such market loss will be reflected in the Indexed Strategy value, subject to the Strategy’s Negative Return Factor. This risk applies even if you do not take a withdrawal before the end of a Term.

Geopolitical conflicts could also create economic disruption, including increased market volatility, and presents economic uncertainty. The full impact and duration of these events are difficult to determine in advance. Any such impact could adversely affect the performance of the securities that comprise the Indexes and may lead to losses on your investment in the Indexed Strategies.

The historical performance of an Index does not guarantee future results.

S&P 500 Index. The S&P 500^® Index is designed to reflect the large‑cap sector of the U.S. equity market and, due to its composition, it also represents the U.S. equity market in general. Any positive change in the S&P 500 Index over a Term will be lower than the total return on an investment in the stocks that comprise the S&P 500 Index because such total return will reflect dividend payments on those stocks and the S&P 500 Index will not reflect those dividend payments. More information about the S&P 500 Index is set out in the Indexes section of this prospectus.

The S&P 500 Index is subject to multiple principal investment risks, such as those related to its investments in large-capitalization companies. The S&P 500 Index tracks a subset of the U.S. stock market, which could cause the S&P 500 Index to perform differently from the overall stock market.

In general, large-capitalization companies may be unable to respond quickly to new competitive challenges and may not be able to attain the high growth rate of successful smaller companies. In addition, the S&P 500 Index may, at times, become focused in stocks of a particular market sector, which would subject the S&P 500 Index to proportionately higher exposure to the risks of that sector.

iShares MSCI EAFE ETF. The iShares MSCI EAFE ETF is an exchange traded fund that seeks to track the investment results of an index composed of large- and mid‑capitalization developed market equities, excluding the U.S. and Canada (MSCI EAFE Index). This underlying index includes stocks from Europe, Australasia, and the Far East. It may include large- or mid‑capitalization companies. The share price of the iShares MSCI EAFE ETF is tied to the performance of large- and mid‑capitalization developed market equities, excluding the U.S. and Canada. The share price may not replicate the performance of the fund, its underlying index, or the components of that index. More information about the iShares MSCI EAFE ETF is set out in the Indexes section of this prospectus. To learn more about the iShares MSCI EAFE ETF, visit iShares.com and search ticker symbol EFA.

The fund is subject to several principal investment risks, such as those related to its investments in large-capitalization and mid‑capitalization foreign companies. In general, large-capitalization companies may be unable to respond quickly to new competitive challenges, and may not be able to attain the high growth rate of successful smaller companies. Generally, the securities of mid‑capitalization companies may be more volatile and may involve more risk than the securities of larger companies. Mid‑capitalization companies are also more likely to fail than larger companies. Securities issued by non‑U.S. companies are subject to the risks related to investments in foreign markets (e.g., increased price volatility; changing currency exchange rates; and greater political, regulatory, and economic uncertainty). Because the fund is an ETF, it is also exposed to the risks associated with the operation of any ETF. The value of its shares, which are valued based on their trading prices in the secondary market, may change rapidly and unpredictably and may trade at premiums or discounts to the fund’s net asset value.

The principal investment risks of the fund are described in the fund’s prospectus, including the following risks: asset class risk, authorized participant concentration risk, concentration risk, currency risk, cybersecurity risk, equity securities risk, financials sector risk, geographic risk, index-related risk, issuer risk, large-capitalization companies risk, management risk, market risk, market trading risk, mid‑capitalization companies risk, national closed market trading risk, non‑U.S. securities risk, operational risk, passive investment risk, reliance on trading partners risk, risk of investing in developed countries, risk of investing in Japan, securities lending risk, structural risk, tracking error risk and valuation risk.

iShares U.S. Real Estate ETF. The iShares U.S. Real Estate ETF is an exchange traded fund that seeks to track the investment results of an index composed of U.S. equities in the real estate sector (Dow Jones U.S. Real Estate Index). This underlying index may include large-, mid‑ or small-capitalization companies. A significant portion of the underlying index is represented by real estate investment trusts (REITs), but the components are likely to change over time. The share price of the iShares U.S. Real Estate ETF is tied to the performance of the real estate sector. The share price may not replicate the performance of the fund, its underlying index, or the components of that index. More information about the iShares U.S. Real Estate ETF is set out in the Indexes section of this prospectus. To learn more about the iShares U.S. Real Estate ETF, visit iShares.com and search ticker symbol IYR.

The fund is subject to several principal investment risks, such as those related to its investments in large-, mid‑ and small-capitalization U.S. companies in the real estate sector. In general, large-capitalization companies may be unable to respond quickly to new competitive challenges, and may not be able to attain the high growth rate of successful smaller companies. Generally, the securities of smaller companies (including mid‑ and small-capitalization companies) may be more volatile and may involve more risk than the securities of larger companies. Smaller companies are also more likely to fail than larger companies. Companies that invest in real estate are highly sensitive to the risks of owning real estate, to general and local economic conditions and developments in the real estate market, and to changes in interest rates. Many companies that invest in real estate utilize leverage (and some may be highly leveraged), which increases investment risk, and could potentially magnify the fund’s losses. Because the fund is an ETF, it is also exposed to the risks associated with the operation of any ETF. The value of its shares, which are valued based on their trading prices in the secondary market, may change rapidly and unpredictably and may trade at premiums or discounts to the fund’s net asset value.

The principal investment risks of the fund are described in the fund’s prospectus, including the following risks: asset class risk, authorized participant concentration risk, concentration risk, cybersecurity risk, dividend risk, equity securities risk, index-related risk, issuer risk, large-capitalization companies risk, management risk, market risk, market trading risk, mid‑capitalization companies risk, operational risk, passive investment risk, real estate investment risk, risk of investing in the United States, securities lending risk and tracking error risk.

SPDR Gold Shares ETF. The SPDR Gold Shares ETF represents units of beneficial interest in, and ownership of, the SPDR Gold Trust, an exchange traded fund that holds gold bullion. The investment objective of the trust is for the shares to reflect the performance of the price of gold bullion, less the trust’s expenses. The shares are designed to mirror as closely as possible the price of gold, and the value of the shares relates directly to the value of the gold held by the trust, less its liabilities. The price of gold has fluctuated widely over the past several years and the shares have experienced significant price fluctuations. The Gold Shares trade on the NYSE Arca under the symbol GLD. For more information, visit www.spdrgoldshares.com.

The fund is subject to several principal investment risks related to the price of gold. The price of gold has fluctuated widely over the past several years and the shares have experienced significant price fluctuations. Several factors may affect the price of gold, including:

The principal investment risks of the fund are described in the fund’s prospectus, including the following risks: price risk, passive investment risk, trading market risk, risk of loss, damage, theft, or restriction on access, and risks related to the fund’s ETF structure.

First Trust Barclays Edge Index. The First Trust Barclays Edge Index is designed to combine capital strength and value equity investment methodologies with a mix of US Treasury futures indexes for the potential to provide stable returns over time. The First Trust Barclays Edge Index consists of an equity component that combines stocks from the Capital Strength Index and the Value Line^® Dividend Index. The Capital Strength Index starts with the largest 500 companies in the NASDAQ US benchmark index and then reduces the selection universe by screening for companies that meet minimum criteria including cash and/or short-term investments on their balance sheets, low debt‑to‑market cap ratios and attractive return‑on‑equity. It then selects the top 50 names from this smaller universe based on low historical volatility. The Value Line Dividend Index starts with the universe of stocks published in its The Value Line Investment Survey publication and then selects those with a Value Line^® Safety Rank of 1 or 2, with attractive dividends and market cap of one billion dollars or above. It then equally weights all stocks that meet those conditions (generally, around 160‑200 stocks). The First Trust Barclays Edge Index then combines the stocks represented in The Capital Strength Index and the Value Line^® Dividend Index with an equal-weight assigned to each underlying index and rebalanced back to equal-weight on a monthly basis. Furthermore, since the index is on an excess return basis (i.e., it returns the index performance in excess of risk-free rates), the risk-free return is deducted from the equity underliers. The risk-free rate used in this calculation is the U.S. Fed Funds Rate published by the Federal Reserve of New York (ticker: FEDL01) for each day divided by 360 as outlined in the Index Rulebook. No such adjustment is needed to the US Treasury futures indexes as these securities returns are naturally on an excess return basis.

The Index uses an optimizer to evaluate its exposure to stocks and US Treasury futures indexes on a daily basis to target a 7% volatility level. This volatility control mechanism aims to target or limit the volatility of the index return over time by adjusting the exposure of the index constituents through a rules-based process called mean-variance optimization. The optimizer defines risk using both shorter- and longer-term measures of historical realized volatility. It then seeks to determine the allocations between the equity and US Treasury futures index that produce the highest expected return for the target volatility level, subject to constraints. Depending on the constraints of the optimizer at the time, the Index may or may not allocate to the US Treasury futures indexes. When the volatility measures are low, the index can have exposure greater than 100%. However, the optimizer is constrained such that the exposure can never be greater than 225%. Likewise, when volatility is high, the index exposure can be less than 100%. In addition, the First Trust Barclays Edge Index generally rebalances based on end‑of‑day values in the event there is a deviation in the index component weights of 10% or more, on an absolute basis, from the previous index rebalance value.

The performance of the First Trust Barclays Edge Index reflects the deduction of operating costs and rebalancing costs from the valuation of the underlying indexes. These costs, deducted as an annualized percentage on a daily basis, are fixed for the underlying indexes. The operating costs for the First Trust Barclays Edge Index range from 0.20% to 0.60%, and the rebalancing costs for the First Trust Barclays Edge Index range from 0.02% to 0.03%. The operating costs represent an estimate of the costs that would be incurred to buy and sell the index components. The rebalancing costs represent an estimate of the costs that would be incurred each time the Index rebalances due to changes in weightings of the Index components. The deduction of these costs occurs at the First Trust Barclays Edge Index level (i.e., the return on the First Trust Barclays Edge Index is reduced based on the applicable operating and rebalancing costs).

Equity securities may decline significantly in price over short or extended periods of time, and such declines may occur in the equity market as a whole, or they may occur in only a particular country, company, industry, or sector of the market.

Before the end of a Term, money allocated to an Indexed Strategy is subject to the risk that changes in the related option prices may have a negative effect on the value of the Indexed Strategy. This risk applies only if you Surrender your Contract or take a withdrawal before the end of a Term.

If you make a Performance Lock election, you will no longer participate in the positive or negative performance of the Index over the remainder of the Term. This means the value of the Indexed Strategy cannot increase for the remainder of the Term, even if the Index rises over the remainder of the Term.

A Performance Lock election is effective on the Market Close immediately following our receipt of your Request in Good Order, or, if you specifically request it, on the second Market Close following our receipt of your Request in Good Order. This means you will not be able to determine in advance the gain or loss applicable to the Indexed Strategy when electing a Performance Lock. The gain or loss may be higher or lower at the time the Performance Lock election goes effective than it was when you submitted your Request in Good Order, and the gain or loss on the Market Close immediately following our receipt of your Request in Good Order may be higher or lower than the gain or loss on the second Market Close following our receipt of your Request in Good Order.

We set a Declared Rate for each new 1‑year Term of the Declared Rate Strategy. The Declared Rate will never be less than the guaranteed minimum interest rate from 0.15% to 3.0% set out in the Declared Rate Strategy endorsement included in your Contract. The guaranteed minimum interest rate set out in the endorsement will never be less than the minimum interest rate required for fixed annuity contracts on the Contract Effective Date under the Standard Nonforfeiture Law of the state in which your Contract is issued. You risk the possibility that the Declared Rate for a new Term may be lower than you would find acceptable.

MassMutual Ascend Life is not an investment company. Neither MassMutual Ascend Life nor the separate account that we established in connection with the Contracts is registered as an investment company under the Investment Company Act of 1940. The protections provided to investors by that Act are not applicable to the Contract.

No company other than MassMutual Ascend Life has any legal responsibility to pay amounts owed under the Contract. You should look to the financial strength of MassMutual Ascend Life for its claims-paying ability.

Our general account assets fund the guarantees provided in the Contracts. The assets are subject to our general business operation liabilities and claims of our creditors and may lose value. We established a non‑unitized separate account for the purpose of supporting our obligation to adjust the Indexed Strategy values based on the Daily Value Percentage or rise or fall of the Index. The assets in the non‑unitized separate account are not chargeable with liabilities arising out of any other business that we conduct but may lose value. The non‑unitized separate account differs from the unitized separate accounts that support our variable annuity contracts. As a result, unlike the owner of a traditional variable annuity who has a beneficial interest in, and participates in the performance of, the assets of the related unitized separate account, you do not have any interest in or claim on the assets in the non‑unitized separate account and you will not participate in any way in the performance of assets held in that account.

We rely heavily on technology, including interconnected computer systems and data storage networks and digital communications, to conduct our business. Because our business is highly dependent upon the effective operation of our computer systems and those of our service providers and other business partners, our business is vulnerable to disruptions from utility outages, and susceptible to operational and information security risks resulting from information systems failure (e.g., hardware and software malfunctions), and cyberattacks. Cyberattacks may be systemic (e.g., affecting the internet, cloud services, or other infrastructure) or targeted (e.g., failures in or breach of our systems or those of third parties on whom we rely, including ransomware and malware attacks). Cybersecurity risks include, among other things, the loss, theft, misuse, corruption, and destruction of data maintained online or digitally, interference with or denial of service, attacks on our websites (or the websites of third parties on whom we rely), other operational disruption and unauthorized release, use or abuse of confidential customer information. The risk of cyberattacks may be higher during periods of geopolitical turmoil. Due to the increasing sophistication of cyberattacks, a cybersecurity breach could occur and persist for an extended period of time without detection. Systems failures and cyberattacks, as well as, any other catastrophic event, including natural and manmade disasters, public health emergencies, pandemic diseases, terrorist attacks, floods or severe storms affecting us, any third-party administrator, intermediaries, and other affiliated or third-party service providers may adversely affect us, our business operations and your Account Value and interfere with our ability to process contract transactions and calculate Account Values. Systems failures and cyberattacks may also interfere with our processing of contract transactions, including the processing of orders from our website, impact our ability to calculate Account Values, cause the release or possible destruction of confidential customer and/or business information, impede order processing or cause other operational issues, subject us and/or our service providers and intermediaries to regulatory fines, litigation and financial losses and/or cause reputational damage. Cybersecurity risks may also impact the issuers of securities of which the Indices are comprised, which may cause the Indices to lose value. The preventative actions we take to reduce the frequency and severity of cybersecurity incidents and protect our computer systems may be insufficient to prevent a cybersecurity breach from impacting our operations or your Account Value. There can be no assurance that we or our service providers and intermediaries will be able to avoid cybersecurity breaches affecting your Contract.

In addition, we are also exposed to risks related to natural and man‑made disasters, including, but not limited to, storms, fires, floods, earthquakes, public health crises, malicious acts, and terrorist acts, or any other event, which could adversely affect our ability to conduct business. A natural or man‑made disaster, including a pandemic such as COVID‑19, could result in our workforce, and/or employees of service providers and/or third-party administrators, being compromised and unable or unwilling to fully perform their responsibilities, which could likewise result in interruptions in our service. This could interfere with our processing of contract transactions, including processing orders from owners, impact our ability to calculate Account Value, or have other adverse impacts on our operations. These events may also negatively affect our service providers and intermediaries, and issuers of securities of which the Indices are comprised, which may cause the Indices to lose value. There can be no assurance that we or our service providers and intermediaries will be able to avoid negative impacts associated with natural and man‑made disasters.