Post-Effective Amendment to Registration Statement by Investment Company (Form 485APOS)

File No. 333-281598

As filed with the Securities and Exchange Commission on May 15, 2025

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

Form N-4

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

(Check Appropriate Box or Boxes)

Transamerica Financial Life Insurance Company

(Name of Insurance Company)

6400 C Street SW

Cedar Rapids, IA 52499

(Address of Insurance Company’s Principal Executive Offices) (Zip Code)

Insurance Company’s Telephone Number, including Area Code: (319) 355-8511

Brian Stallworth, Esq.

Transamerica Financial Life Insurance Company

c/o Office of the General Counsel

6400 C Street SW

Cedar Rapids, IA 52499-4240

Telephone Number: (319) 355-8511

(Name, Address, including zip code, and telephone number, including area code, of Agent for Service)

Approximate Date of Proposed Public Offering: Continuously after the registration statement becomes effective.

It is proposed that this filing will become effective:

☐ immediately upon filing pursuant to paragraph (b)

☐ on May 1, 2025 pursuant to paragraph (b)

☐ 60 days after filing pursuant to paragraph (a)(1)

☒ on August 18, 2025 pursuant to paragraph (a)(1) of Rule 485 under the Securities Act of 1933 (“Securities Act”).

If appropriate, check the following box:

☐ This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

Check each box that appropriately characterizes the Registrant:

☐ New Registrant (as applicable, a Registered Separate Account or Insurance Company that has not filed a Securities Act registration statement or amendment thereto within 3 years preceding this filing)

☐ Emerging Growth Company (as defined by Rule 12b-2 under the Securities Exchange Act of 1934 (“Exchange Act”))

☐ If an Emerging Growth Company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of Securities Act.

☒ Insurance Company relying on Rule 12h-7 under the Exchange Act

☐ Smaller reporting company (as defined by Rule 12b-2 under the Exchange Act)

Explanatory Note

Registrant is filing this post-effective amendment (the “Amendment”) for the sole purpose of supplementing the prospectus and Statement of Additional Information dated May 1, 2025 for the Transamerica Structured Index Advantage Annuity NY Registration Statement. The Amendment is not intended to amend or delete any part of Part A or Part B to the Registration Statement, except as specifically noted herein. Parts A and B included in Post-Effective Amendment No. 1 to the Registration Statement (File No. 333-281598) are hereby incorporated by reference to the extent required by applicable law. A new Part C is included in the Amendment.

The information in this supplement is not complete and may be changed. We may not sell securities using this supplement until the amended registration statement filed with the Securities and Exchange Commission is effective. This supplement is not an offer to sell securities and is not soliciting an offer to buy securities in any state where the offer or sale is not permitted.

TRANSAMERICA STRUCTURED INDEX ADVANTAGE^® ANNUITY NY

An Individual Flexible Premium Deferred Index-Linked Annuity Policy

Issued by

Transamerica Financial Life Insurance Company

Supplement dated [  ], 2025

to the

Prospectus dated May 1, 2025

This supplement updates certain information contained in the prospectus. Please read this supplement carefully and retain it for future reference. Capitalized terms not defined in this supplement have the same meanings as in the prospectus.

CHANGES TO THE POLICY

NEW INDEX ACCOUNT OPTIONS

Beginning August 18, 2025, three new Index Account Options will be available under the Policy. We refer to these new Index Account Options as “Triple Edge Advantage” or “Dual Direction” in the Policy form and our marketing materials. Each is linked to the performance of the S&P 500^® Index (price return); has a Crediting Period of 1, 2, or 6 years; has Buffer as the Downside Protection Type (with a Buffer Rate of 10%); and a new Growth Opportunity Type: Edge and Edge+. The Edge and Edge+ Growth Opportunity Type has an associated Edge Rate and Edge+ Rate.

The new Index Account Options provide for investment gain at the end of a Crediting Period if the Index Change is positive, zero, or to a limited extent, negative. A negative Index Change in excess of the Buffer Rate will result in loss. 

Under the new Index Account Options, the Edge Rate and Edge+ Rate represent a fixed potential return. In no event will a positive Index Credit Rate, if any, differ from the Edge Rate or Edge+ Rate, as applicable. This may result in you earning less than the Index’s return. Edge Rates and Edge+ Rates under the new Index Account Options will vary from one Crediting Period to the next, subject to guaranteed minimums. The lowest Edge Rate and Edge+ Rate that may be established under the Policy is 3%.

You should understand that while the Edge and Edge+ Growth Opportunity Type may provide for a positive Index Credit in the event of negative Index performance, there is no guarantee of investment gain. A negative Index Change in excess of the Buffer Rate will result in loss, which could be significant. At the end of a Crediting Period for any of the new Index Account Options, the maximum amount of loss that you could experience from negative Index performance is 90%.

Please see “Revisions to the Prospectus” below for additional information about the new Index Account Options, including examples.

GUARANTEED MINIMUM DEATH BENEFIT (GMDB RIDER)

For Policies with both (i) an application signed on or after August 18, 2025, and (ii) an Annuitant who is younger than age 81 as of the application date, a guaranteed minimum death benefit (“GMDB”) rider will be automatically added to the Policy for no additional charge. The GMDB rider is not available under any other Policies. The Policy Value death benefit will apply (for no additional charge) to any Policy that is ineligible for the GMDB rider.

The GMDB rider provides for a guaranteed minimum death benefit equal to total premium payments, reduced for withdrawals. Withdrawals may result in reductions to the benefit that are greater than the amount withdrawn. If the GMDB rider is in effect upon the death of the Annuitant during the accumulation phase, the death benefit will equal the greater of (a) Policy Value and (b) the guaranteed minimum death benefit. If an Owner who is not also the Annuitant pre-deceases the Annuitant during the accumulation

phase, the death benefit will be equal to the Policy Value (there will be no guaranteed minimum death benefit).

Please see “Revisions to the Prospectus” below for additional information about the GMDB rider.

REVISIONS TO THE PROSPECTUS

Each of the prospectus revisions below are effective August 18, 2025.

I. Cover Page

The third paragraph of the bullet labeled “Index Account Options” (including the associated sub-bullets) is replaced with the following:

Each available Index Account Option also has either a (i) Cap or (ii) Edge and Edge+ upside feature, which will be used to calculate any positive Index rate of return that may be credited to your investment at the end of a Crediting Period. Cap Rates, and Edge Rates and Edge+ Rates, vary by Index Account Option and generally change from one Crediting Period to the next, subject to guaranteed minimums.

II. Glossary of Terms

The following new special terms are added to the glossary:

Edge and Edge+ – A Growth Opportunity Type. If you select an Index Account Option with Edge and Edge+, at the end of the Crediting Period:

Edge Rate – For an Index Account Option with the Edge and Edge+ Growth Opportunity Type, the percentage used to calculate the Index Credit Rate if the Index Change is negative, but not in excess of the Buffer Rate.

Edge+ Rate – For an Index Account Option with the Edge and Edge+ Growth Opportunity Type, the percentage used to calculate the Index Credit Rate if the Index Change is positive or zero.

Guaranteed Minimum Death Benefit (guaranteed minimum death benefit) – The minimum death benefit provided by the Guaranteed Minimum Death Benefit (GMDB) rider. The guaranteed minimum death benefit will equal 100% of the Policy Value as of the rider effective date. Thereafter, over the life of the rider, the guaranteed minimum death benefit will increase dollar-for-dollar for subsequent premium payments and will be reduced by withdrawals. Withdrawals may result in proportionate reductions to the benefit that are greater than the amount withdrawn.

GMDB Benefit Base – The GMDB Benefit Base equals the guaranteed minimum death benefit under the GMDB rider (including any increases for additional premium payments and reductions for withdrawals).

The definitions of the existing special terms listed below are replaced as follows:

Buffer – The Downside Protection Type for the available Index Account Options. If you select an Index Account Option, your investment will incur loss at the end of the Crediting Period for negative Index performance beyond the Buffer Rate. For example, if you select an Index Account Option with a Buffer Rate of 10%, and at the end of the Crediting Period the Index Change is -15%, your Index Credit Rate (i.e., your Index rate of return) would be -5%. If the negative Index performance does not go beyond the Buffer Rate, you will not incur loss as a result of that negative Index performance.

Cap – A Growth Opportunity Type. If you select an Index Account Option with Cap, you will participate in positive Index performance at the end of the Crediting Period up to the Cap Rate, but no positive Index performance beyond the Cap Rate. For

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instance, if you select an Index Account Option with a Cap Rate of 10%, and at the end of the Crediting Period the Index Change is 5%, your Index Credit Rate (i.e., your Index rate of return) would be +5%. If the Index Change were 15%, your Index Credit Rate would be limited to +10%.

Cap Rate – For an Index Account Option with Cap, the percentage used to calculate the Index Credit Rate if the Index Change is positive.

Death Benefit – The amount payable upon the death of the Annuitant or Owner during the accumulation phase.

Growth Opportunity Type – A feature of an Index Account Option that determines whether and the extent to which a positive Index Credit will apply at the end of a Crediting Period.

III. Overview of the Policy

On page 5, the fourth paragraph (but not the associated bullet) under the subsection “Phases of the Policy – The Accumulation Phase” is replaced with the following:

We may limit the positive Index Change used in calculating Index Credit for an Index Account Option at the end of its Crediting Period. Each Index Account Option has a Growth Opportunity Type that may limit your positive Index returns. The only Growth Opportunity Types that we currently offer are (i) Cap, with an associated Cap Rate and (ii) Edge and Edge+, with an associated Edge Rate and Edge+ Rate. These Growth Opportunity Types may limit positive Index returns in the following manner:

Under the same paragraph, the following is added as a new bullet:

The lowest Edge Rate and Edge+ Rate that may be established under the Policy is3%.

IV. Policy Features

On page 7, the subsection “Death Benefit” is replaced with the following:

Death Benefit. The Policy has either (a) a guaranteed minimum death benefit under the GMDB rider or (b) a Policy Value death benefit. If your Policy does not have the GMDB rider, the Policy Value death benefit will apply. Once your Policy is issued, your death benefit cannot be changed.

The GMDB rider provides for a guaranteed minimum death benefit equal to total premium payments, reduced for withdrawals. Withdrawals may result in reductions to the benefit that are greater than the amount withdrawn. If the GMDB rider is in effect upon the death of the Annuitant during the accumulation phase, the death benefit will equal the greater of (a) Policy Value or (b) the guaranteed minimum death benefit. If an Owner who is not also the Annuitant pre-deceases the Annuitant during the accumulation phase, the death benefit will be equal to the Policy Value (there will be no guaranteed minimum death benefit).

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V. Important Information You Should Consider About the Policy

On page 8, in the middle column of the row “Are There Ongoing Fees and Expenses?”, the first sentence of the first full paragraph is replaced with the following:

There is an implicit ongoing fee on the Index Account Options to the extent that your participation in Index gains is limited by either a Cap Rate or an Edge Rate or Edge+ Rate.

On page 10, in the middle column of the row “Is this a Short-Term Investment?”, the second sentence of the last bullet is replaced with the following:

In the absence of such instructions, Policy Value in the matured Allocation Account will be automatically reinvested in the same Allocation Account for another Crediting Period (with the Cap Rate, Edge Rate and Edge+ Rate, or annual interest rate applicable to a new Crediting Period).

On page 10, in the middle column of the row “What are the Risks Associated with the Investment Options?”, the third bullet (including the associated sub-bullet) is replaced with the following:

On page 11, in the middle column of the row “Are There Restrictions on the Investment Options?”, the fifth bullet is replaced with the following:

On page 11, in the middle column of the row “Are There any Restrictions on Policy Benefits?,” the following is added as the fourth bullet:

VI. Principal Risks of Investing in the Policy

On page 14, under “Allocation Account Availability Risk,” the first sentence of the fourth paragraph is replaced with the following:

We may change the features of an Index Account Option from one Crediting Period to the next, including the Index and the current limit on Index gain (i.e., the Cap Rate or Edge Rate and Edge+ Rate, subject to minimum guarantees).

On page 15, under “Liquidity Risk,” the second sentence of the bullet labeled “Maturity” is replaced with the following:

In the absence of such instructions, Policy Value in the matured Allocation Account will be automatically reinvested in the same Allocation Account for another Crediting Period (with the Cap Rate, Edge Rate and Edge+ Rate, or annual interest rate applicable to a new Crediting Period).

On page 17, under “Withdrawal and Surrender Risk,” the last bullet is deleted and the third-to-last bullet is replaced with the following:

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On page 18, the risk factor “Growth Opportunity Type Risk” is replaced with the following:

GROWTH OPPORTUNITY TYPE RISK

When you invest in an Index Account Option, the upside potential of your investment may be limited by its Growth Opportunity Type. For Cap, the Cap Rate may limit the upside potential of your investment by capping your participation in positive Index performance. For Edge and Edge+, the Edge Rate and Edge+ Rate are fixed rates of potential return (in no event will a positive Index Credit Rate, if any, differ from the Edge Rate or Edge+ Rate, as applicable). In either case, the Index Credit Rate used to calculate gains may be lower than the Index Change. The risk of investment loss could be significantly greater than the potential for investment gain.

Although Index Account Options with Edge and Edge+ may provide for a positive Index Credit in the event of negative Index performance, like every other Index Account Option, they do not guarantee a positive Index Credit, and they are subject to risk of loss as described under “Buffer Risk.”

In general, depending on applicable rates, an Index Account Option with relatively more upside potential based on its Cap Rate is likely to have relatively less downside protection based on its Buffer Rate. Conversely, depending on applicable rates, an Index Account Option with relatively less upside potential based on its Cap Rate is likely to have more downside protection based on its Buffer Rate. Currently, all Index Account Options with Edge and Edge+ have the same Buffer Rate.

We may declare new Cap Rates, or Edge Rates and Edge+ Rates, for the available Index Account Options for new Crediting Periods. We set these rates in our discretion, within any guaranteed limits to which we are subject as described in this prospectus. You bear the risk that the rate(s) we declare for a new Crediting Period will not be any more or less favorable to you than any guaranteed limits to which we are subject.

VII. Index Account Options

On page 29, under the subsection “Index Credit Rate and Index Credit,” the second sentence of the second paragraph is replaced with the following:

The Index Credit Rate is determined by applying the Index Change to either the Downside Protection Type or Growth Opportunity Type, as applicable.

On page 30, the third paragraph (including its associated bullets) under the subsection “Limits on Index Losses: Calculating Losses Using the Downside Protection Type” is replaced with the following:

We calculate your Index Credit Rate using the Buffer as follows:

On page 30, the second sentence of the fifth paragraph under the same subsection is replaced with the following:

Each example assumes that you selected an Index Account Option with a Buffer Rate of 10% (and Cap as the Growth Opportunity Type).

On page 31, under the subsection “Limits on Index Gains: Calculating Gains Using the Growth Opportunity Type,” the first four paragraphs are replaced with the following:

At the end of a Crediting Period for an Index Account Option, we may limit the positive Index return used in calculating Index Credits by applying the designated Growth Opportunity Type. The Growth Opportunity Types that we currently offer are (i) Cap and (ii) Edge and Edge+.

The Cap Rate, or Edge Rate and Edge+ Rate, for an Index Account Option will not change during a Crediting Period but may change from one Crediting Period to the next, subject to the guaranteed minimum(s) applicable to that Index Account Option. The guaranteed minimum Cap Rate, or guaranteed minimum Edge Rate and Edge+ Rate, vary by Index Account Option.

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For each Index Account Option available for investment, the Cap Rate or Edge Rate and Edge+ Rate that we are currently offering for a new Crediting Period will be published at the following website address before rates take effect: cdn.bfldr.com/86JM1UOD/as/3h58nk8ws67pfph7xktm3f4/Transamerica_TSIA_NY_Rate_Change_Flyer.pdf. The Cap Rates and Edge Rates and Edge+ Rates posted on that website address are incorporated by reference into the prospectus. You may also obtain the posted rates by contacting your financial professional or the Company at our Administrative Office.

We determine Cap Rates, or Edge Rates and Edge+ Rates, for each new Crediting Period at our discretion, subject to applicable guaranteed minimums. We consider a number of factors when declaring these rates. Generally, we seek to manage our risk associated with our obligations, in part, by trading derivative and fixed income instruments. The costs and value of these instruments impact the rates we declare, and those costs and values can be impacted by market conditions and forces. We also consider factors such as sales commissions, administrative expenses, regulatory and tax requirements, general economic trends, and competitive factors. You bear the risk that we may declare lower rates for future Crediting Periods, and that such rates could be as low as the applicable guaranteed minimum(s). Rates offered for new Crediting Periods may be different from those offered to new investors or offered to you at Policy issuance.

The following new subsection is added under “Limits on Index Gains: Calculating Gains Using the Growth Opportunity Type”:

Edge and Edge+

Index Account Options with the Edge and Edge+ Growth Opportunity Type (also called “Triple Edge Advantage” or “Dual Direction” in the Policy form and our marketing materials) provide for positive Index Credit at the end of a Crediting Period if the Index Change is positive, zero, or to a limited extent, negative.

For instance, assume you select an Index Account Option with an Edge Rate of 5%, Edge+ Rate of 7%, and Buffer Rate of 10%. If, at the end of the Crediting Period, the Index Change is 10%, your Index Credit Rate would be +7% (i.e., the Edge+ Rate). If instead the Index Change is -8%, your Index Credit Rate would be +5% (i.e., the Edge Rate). If instead the Index Change is -15%, your Index Credit Rate would be -5% (i.e., the negative Index Change in excess of the Buffer Rate).

The Edge Rate and Edge+ Rate are fixed rates of potential return. In no event will a positive Index Credit Rate, if any, differ from the Edge Rate or Edge+ Rate, as applicable. The Edge Rate and Edge+ Rate therefore limit the upside potential of your investment. The Edge Rate and Edge+ Rate are measured over the life of the Crediting Period, which can be more than one year. In cases where a Crediting Period is more than one year, the Edge Rate and Edge+ Rate for that Crediting Period would be less if measured on an annual basis.

Currently, for any Index Account Option with Edge and Edge+, the Edge Rate and Edge+ Rate are subject to the same guaranteed minimum. The declared Edge+ Rate may be higher, lower, or equal to the declared Edge Rate (and vice versa). The only guarantee in that regard is that both the declared Edge Rate and the Edge+ Rate will satisfy the guaranteed minimum.

The following is added under the subsection “Examples of Crediting Methodology” beginning on page 32:

For each scenario below, assume an Index Account Option with a 1-year Crediting Period, Buffer (Buffer Rate 10%), and Edge and Edge+ (Edge Rate 5% and Edge+ Rate 10%).

VIII. Access to Your Money

On page 44, the following bullet is added to the list of bullets:

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IX. Surrenders and Withdrawals

On page 46, under the subsection “Involuntary Cashout,” the following is added as the last paragraph:

We will not invoke the Involuntary Cashout provision if the GMDB rider is in-force and has a death benefit amount of $2,000 or greater. If the Involuntary Cashout provision is invoked when the death benefit amount under the GMDB rider is less than $2,000, we will pay the greater of the Policy Value or the guaranteed minimum death benefit.

X. Benefits Available Under the Policy

On page 47, a row for the GMDB rider is added to the table, as follows:

XI. DEATH BENEFIT

On page 49, under the subsection “General,” the first paragraph is replaced with the following:

The Policy has either (i) a guaranteed minimum death benefit under the GMDB rider or (ii) a Policy Value death benefit. If your Policy does not include the GMDB rider, the Policy Value death benefit will apply to your Policy. Once your Policy is issued, your death benefit cannot be changed. Neither death benefit has an additional charge.

For Policies with both (i) an application signed on or after August 18, 2025, and (ii) an Annuitant who is younger than age 81 as of the application date, the GMDB rider will be automatically added to the Policy. The GMDB rider is not available under any other Policies.

The following summarizes the death benefit that may be payable under the Policy:

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The following table reflects the death benefit that may be payable under the Policy as described above.

On page 50, after the subsection “Beneficiaries,” the following new subsection is added:

GUARANTEED MINIMUM DEATH BENEFIT (GMDB) RIDER

For Policies with both (i) an application signed on or after August 18, 2025, and (ii) an Annuitant who is younger than age 81 as of the application date, the GMDB rider will be automatically added to the Policy. The GMDB rider is not otherwise. The rider may vary for certain Policies and may not be available for all Policies at all times. Once you elect a death benefit and your Policy is issued, your death benefit cannot be changed, and you will not be impacted if we decide to stop offering the rider.

The GMDB rider, if in effect, provides for a guaranteed minimum death benefit upon the death of the Annuitant during the accumulation phase. The guaranteed minimum death benefit will equal 100% of the Policy Value as of the rider effective date. Thereafter, over the life of the rider, the guaranteed minimum death benefit will increase dollar for dollar for subsequent premium payments and will be reduced by any adjusted withdrawals (as described further below).

Upon the death during the accumulation phase of the Annuitant, if the GMDB rider is in effect, the death benefit will equal either (a) the guaranteed minimum death benefit under the rider or (b) the Policy Value, whichever is greater. Because the GMDB rider includes a guaranteed minimum death benefit that could be greater than Policy Value, the GMDB rider may increase the amount payable compared to the Policy Value death benefit. However, if the Policy Value is greater than the guaranteed minimum death benefit at the time that the death benefit becomes payable, the death benefit under the GMDB rider will be the Policy Value, same as the Policy Value death benefit.

When you take any type of withdrawal (including an automatic withdrawal, minimum required distribution, surrender charge- free withdrawal, or any other withdrawal), your guaranteed minimum death benefit will be reduced by an amount called the “adjusted withdrawal.”

The adjusted withdrawal may be more than the dollar amount of your withdrawal request. This will be the case if the guaranteed minimum death benefit exceeds the Policy Value at the time of withdrawal. If you have a qualified Policy, minimum required distributions rules may require you to request a withdrawal.

The formula used to calculate the adjusted withdrawal amount is AW = DP x (GW/PV) where:

AW = Adjusted withdrawal

DP = Greater of PV or GMDB

GW = Gross withdrawal

PV = Policy Value prior to the withdrawal

GMDB = Guaranteed minimum death benefit prior to the withdrawal

We have included a detailed explanation of this adjustment with examples in APPENDIX B – REDUCTION TO GUARANTEED MINIMUM DEATH BENEFIT FOR WITHDRAWALS UNDER GMDB RIDER.

The GMDB rider will terminate upon the earliest of:

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Under limited circumstances, the GMDB rider may be re-elected after termination of the rider, following the death of the Owner or Annuitant. See BENEFICIARY CONTINUATION – Re-Election of GMDB Rider Upon Continuation.

You cannot choose to terminate the GMDB rider unless you Surrender the Policy.

On page 50, under “The Death Benefit Amount,” the first three subsections are replaced as follows:

Death of Person who is both the Annuitant and an Owner Before the Annuity Commencement Date

The death benefit becomes payable if:

Under these circumstances, the death benefit will equal the greatest of:

If an Owner is not also the Annuitant, in the event of simultaneous deaths of the Owner and the Annuitant, the death proceeds equal the amount described in this subsection.

Death of Person who is an Owner but not the Annuitant

The death benefit becomes payable if:

Under these circumstances, the death benefit will equal the Policy Value (which will already reflect any applicable fluctuations of the Interim Value) on the date we receive due proof of death and an election of method settlement.

For purposes of this section, if the Owner is not an individual, then the death of the Annuitant will be treated as the death of the Owner who is also the Annuitant, as described under “Death of Person who is both the Annuitant and an Owner” above.

Death of Annuitant Who is Not an Owner Before the Annuity Commencement Date

If the Annuitant dies before the Annuity Commencement Date, the Annuitant is not the Owner, and the Owner is a natural person:

This is a one-time only Policy Value adjustment applied at the time the Owner becomes the Annuitant.

If the GMDB rider is in effect, the rider will terminate at the time of due proof of death. The GMDB rider may be re-elected by the Owner within 30 days of our receipt of due proof of death provided that the rider’s age eligibility requirements are satisfied, and we are still offering the rider.

If the GMDB rider is re-elected, the Policy Value used to determine the initial guaranteed minimum death benefit under the re-elected rider will be the Policy Value at time of re-election. If re-elected at time of continuation, this would be the Policy Value immediately following the one-time adjustment described above.

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At the time of the one-time adjustment described above, the Policy Value invested in any Allocation Account will remain invested in that Allocation Account in accordance with the general terms of the Policy as described in this prospectus. Any Policy Value added to the Policy as a result of the adjustment will be held in the Fixed Holding Account pending our receipt of new allocation instructions. If we receive allocation instructions within 30 days of continuation, this portion of the Policy Value will be allocated in accordance with those instructions on the next upcoming 1st, 8th, 15th, or 22nd calendar day of any month, whichever occurs first, and the Crediting Period(s) will begin on that day. If we do not receive allocation instructions within 30 days of continuation, this portion of the Policy Value will be automatically allocated to the Default Option.

After the adjustment, the Policy’s death benefit may then become payable at a later date prior to the Annuity Commencement Date as set forth under Death of Owner Before the Annuity Commencement Date above.

Under “Beneficiary Continuation” beginning on page 51, the following new subsection is added:

Re-Election of GMDB Rider Upon Continuation

If a Policy has a GMDB rider when the death benefit becomes payable or a one-time adjustment to the Policy Value as described in this section occurs, the rider will terminate upon our receipt of due proof of death of the decedent.

When the Policy is continued by a surviving spouse upon payment of a death benefit, the surviving spouse may re-elect the GMDB rider under the Policy, if the rider is available at that time. The initial guaranteed minimum death benefit under the re-elected rider will be the Policy Value at time of re-election. If re-elected at time of continuation, this would be the Policy Value immediately following the one-time adjustment described above. A non-spouse beneficiary who continues the Policy upon payment of the death benefit cannot re-elect the GMDB rider.

Upon the death of an Annuitant who is not an Owner, the surviving Owner may re-elect the GMDB rider under the Policy following the one-time adjustment to Policy Value, if the rider is available at that time. The initial guaranteed minimum death benefit under the re-elected rider will be the Policy Value at time of re-election. If re-elected at time of continuation, this would be the Policy Value immediately following the one-time adjustment described above.

Re-election is available only if the Annuitant has not reached the age of 81 at the time of the re-election.

XII. Appendix A – Investment Options Available Under the Policy

On page A-1, rows for the new Index Account Options with Edge and Edge+ are added to the Index Account Options table, as follows:

On page A-1, the third paragraph (and associated bullet) and fourth paragraph under the Index Account Options table are replaced with the following:

In the future, if we offer a new Index Account Option and:

We reserve the right to offer new Index Account Options with different Downside Protection Types or Growth Opportunity Types in the future.

XIII. New Appendix C

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The following appendix is added to the prospectus:

APPENDIX C

REDUCTION TO GUARANTEED MINIMUM DEATH BENEFIT FOR WITHDRAWALS UNDER GMDB RIDER

Adjusted Withdrawals. If the GMDB rider is part of your Policy, and you take a withdrawal, then your guaranteed minimum death benefit is reduced by an amount called the adjusted withdrawal. The amount of the reduction depends on the relationship between your death proceeds and Policy Value. The adjusted withdrawal is equal to the gross withdrawal multiplied by the death proceeds immediately prior to the withdrawal divided by the Policy Value immediately prior to the withdrawal.

The formula is AW = DP x (GW/PV) where:

AW is the adjusted withdrawal

DP is the death proceeds prior to the withdrawal = greater of PV or GMDB

GW is the gross withdrawal

PV is the Policy Value prior to the withdrawal

GMDB is the guaranteed minimum death benefit prior to the withdrawal

The following examples describe the effect of a withdrawal on the guaranteed minimum death benefit and Policy Value.

Example 1: Death Proceeds Greater than Policy Value

Assumptions:

GMDB = $75,000

PV = $50,000

DP = $75,000

GW = $15,494

AW = $75,000 x ($15,494 /$50,000) = $23,241

The guaranteed minimum death benefit is reduced more than the Policy Value because the guaranteed minimum death benefit was greater than the Policy Value immediately prior to the withdrawal.

Example 2: Death Proceeds Equal to Policy Value

Assumptions:

GMDB = $50,000

PV = $75,000

DP = $75,000

GW = $15,494

AW = $75,000 x ($15,494 /$75,000) = $15,494

The guaranteed minimum death benefit and Policy Value are reduced by the same amount because the Policy Value was greater than the guaranteed minimum death benefit immediately prior to the withdrawal.

These examples are for illustrative purposes only. The purpose of these illustrations is to demonstrate how this feature is calculated using hypothetical values. Your experience will vary based on circumstances at the time of withdrawal.

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The information in this supplement is not complete and may be changed. We may not sell securities using this supplement until the amended registration statement filed with the Securities and Exchange Commission is effective. This supplement is not an offer to sell securities and is not soliciting an offer to buy securities in any state where the offer or sale is not permitted.

TRANSAMERICA STRUCTURED INDEX ADVANTAGE^® ANNUITY NY

An Individual Flexible Premium Deferred Index-Linked Annuity Policy

Issued by

Transamerica Financial Life Insurance Company

Supplement dated [  ], 2025

to the

Statement of Additional Information dated May 1, 2025

This supplement updates certain information contained in the Statement of Additional Information (“SAI”). Please read this supplement carefully and retain it for future reference. Capitalized terms not defined in this supplement have the same meanings as in the SAI.

Beginning August 18, 2025, three new Index Account Options will be available under the Policy, as described in the prospectus supplement dated [ ], 2025. We refer to these new Index Account Options, which have a new Edge and Edge+ Growth Opportunity Type and Buffer as the Downside Protection Type, as “Triple Edge Advantage” or “Dual Direction” Index Account Options in the Policy and in our marketing materials.

Each of the SAI revisions below are effective August 18, 2025.

I. Additional Information About Interim Value Adjustments

On page 7, the following is added to the end of the subsection “Calculating Option Value”:

For an Index Account Option with Edge and Edge+ and Buffer, the Option Value can be decomposed into two binary call options and one put option. The binary call options value the potential for Index gains based on the Edge Rate and Edge+ Rate, while the put option values the protection the Buffer provides. The fair value is calculated as:

Fair Value = (in-the-money binary call) * Edge Rate + (at-the-money binary call) * (Edge+ Rate – Edge Rate) – (out-of-the-money put)

On page 7, the following definition is added to the end of the subsection “Derivative Descriptions”:

In-the-money binary call: The option to buy a position in the Index on the term end date at a strike price greater than or equal to the Initial Index Value where the strike price is less than the Initial Index Value. On the Crediting Period end date, the option’s value is the maximum of the Final Index Value minus the strike price and 0.

On page 10, the following is added to the end of the subsection “Additional Examples of Interim Value Adjustments”:

4. TRIPLE EDGE ADVANTAGE INDEX ACCOUNT OPTION IN RISING AND FALLING MARKET

These examples are intended to show you Index Account Option values at the end of a one-year Crediting Period assuming a positive Index change or negative Index change less than the Buffer Rate to illustrate when an Edge+ or Edge rate is applied, and a negative Index change in excess of the Buffer Rate to illustrate when a Buffer is applied. These examples assume that you allocate $100,000 to a Triple Edge Advantage Index Account Option with an Edge+ Rate of 15%, Edge Rate of 10% and a Buffer Rate of 10%. They assume there have been no withdrawals. All illustrated values are hypothetical.

PART C

OTHER INFORMATION

Item 27. Exhibits

Item 28. Directors and Officers of the Insurance Company (Transamerica Financial Life Insurance Company)

Item 29. Persons Controlled by or under Common Control with the Insurance Company

Item 30. Indemnification

The New York Code (Sections 721 et. seq.) provides for permissive indemnification in certain situations, mandatory indemnification in other situations, and prohibits indemnification in certain situations. The Code also specifies procedures for determining when indemnification payments can be made.

Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the Registrant pursuant to the foregoing provisions, or otherwise, the Registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or paid by a director, officer or controlling person in connection with the securities being registered), the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Act and will be governed by the final adjudication of such issue.

Item 31 Principal Underwriters

(a) Transamerica Capital, LLC serves as the principal underwriter for:

Transamerica Capital, LLC serves as the principal underwriter for the Merrill Lynch Life Variable Annuity Separate Account, Merrill Lynch Life Variable Annuity Separate Account A, Merrill Lynch Life Variable Annuity Separate Account B, Merrill Lynch Life Variable Annuity Separate Account C, Merrill Lynch Life Variable Annuity Separate Account D, Merrill Lynch Variable Life Separate Account, and Merrill Lynch Variable Life Separate Account II, Retirement Builder Variable Annuity Account, Separate Account Fund B, Separate Account Fund C, Separate Account VA AA, Separate Account VA B, Separate Account VA BB, Separate Account VA CC, Separate Account VA DD, Separate Account VA FF, Separate Account VA HH, Separate Account VA Q, Separate Account VA U, Separate Account VA V, Separate Account VA-1, Separate Account VA-2L, Separate Account VA-5, Separate Account VA-6, Separate Account VA-7, Separate Account VA-8, Separate Account VL, Separate Account VL E, Separate Account VUL-A, Separate Account VUL-1; Separate Account VUL-2, Separate Account VUL-3, Separate Account VUL-4, Separate Account VUL-5, Separate Account VUL-6, Transamerica Corporate Separate Account Sixteen, Transamerica Separate Account R3, Variable Life Account A, WRL Series Annuity Account, WRL Series Annuity Account B, WRL Series Life Account, WRL Series Life Account G, and WRL Series Life Corporate Account. These accounts are separate accounts of Transamerica Life Insurance Company.

Transamerica Capital, LLC serves as principal underwriter for ML of New York Variable Annuity Separate Account A, ML of New York Variable Annuity Separate Account B, ML of New York Variable Annuity Separate Account C, ML of New York Variable Annuity Separate Account D, ML of New York Variable Life Separate Account, ML of New York Variable Life Separate Account II, Separate Account VA BNY, Separate Account VA QNY, Separate Account VA-2LNY, Separate Account VA-5NLNY, Separate Account VA-6NY, TFLIC Separate Account B, TFLIC Separate Account C, TFLIC Separate Account VNY, TFLIC Pooled Account No. 44, TFLIC Series Annuity Account, TFLIC Series Life Account, and Transamerica Variable Funds. These accounts are separate accounts of Transamerica Financial Life Insurance Company.

Transamerica Capital, LLC also serves as principal underwriter for Transamerica Series Trust and Transamerica Funds.

(b) Directors and Officers of Transamerica Capital, LLC:

(c) Compensation to Principal Underwriter:

Item 31A. Information About Contracts with Index-Linked Options and Fixed Options Subject to a Contract Adjustment

Item 32. Location of Accounts and Records

Not applicable.

Item 33. Management Services.

All management service contracts, if any, are discussed in Part A or Part B.

Item 34. Undertakings

With regard to Index-Linked Options and/or Fixed Options subject to a Contract Adjustment, the Registrant undertakes:

Act; and

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized in the City of Denver, State of Colorado, on May 15, 2025.

Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities indicated on May 15, 2025.

*By: Brian Stallworth – Attorney-in-Fact pursuant to Powers of Attorney filed previously and/or herewith.