Insider Buy Strategy 2019-4

The unit investment trust named above (the “Portfolio”), included in Invesco Unit Trusts, Series 2012, invests in aportfolio of stocks. Of course, we cannot guarantee that the Portfolio will achieve its objective.

November 7, 2019

You should read this prospectus and retain it for future reference.

The Securities and Exchange Commission has not approved or disapproved of the Unitsor passed upon the adequacy or accuracy of this prospectus.

Any contrary representation is a criminal offense.

INVESCO

Investment Objective. The Portfolio seeks capitalappreciation.

Principal Investment Strategy. The Portfolioseeks to achieve its objective by investing in a portfolioof common stocks that have been identified byInvesco Capital Markets, Inc., the Sponsor, as havingexperienced positive insider buying activity and areviewed as attractive from a fundamental analysisperspective. Vickers Stock Research, Inc. provided theSponsor with research relating to companies that haveexperienced positive insider buying activity.

The Sponsor selected the resulting portfolio afterconsidering additional factors such as marketcapitalization, style, liquidity, revenue, earnings,dividends, cash flow, sector or other fundamentalscreens. The stocks considered for the portfolio are ofcompanies that trade on a U.S. stock exchange, whichincludes American Depositary Receipts (“ADRs”).

Of course, we cannot guarantee that your Portfoliowill achieve its objective. The value of your Units mayfall below the price you paid for the Units. You shouldread the “Risk Factors” section before you invest.

The Portfolio is designed as part of a long-terminvestment strategy. The Sponsor may offer asubsequent series of the portfolio when the currentPortfolio terminates. As a result, you may achieve moreconsistent overall results by following the strategythrough reinvestment of your proceeds over severalyears if subsequent series are available. Repeatedlyrolling over an investment in a unit investment trust maydiffer from long-term investments in other investmentproducts when considering the sales charges, fees,expenses and tax consequences attributable to aUnitholder. For more information see “Rights ofUnitholders--Rollover”.

Principal Risks. As with all investments, you canlose money by investing in this Portfolio. The Portfolioalso might not perform as well as you expect. This canhappen for reasons such as these:

• Security prices will fluctuate. The value ofyour investment may fall over time.

• An issuer may be unwilling or unable todeclare dividends or make otherdistributions in the future, or mayreduce the level of dividends declared.This may reduce the level of income certain ofthe Portfolio’s securities pay which wouldreduce your income and may cause the valueof your Units to fall.

• The financial condition of an issuer mayworsen or its credit ratings may drop,resulting in a reduction in the value ofyour Units. This may occur at any point intime, including during the initial offering period.

• You could experience dilution of yourinvestment if the size of the Portfolio isincreased as Units are sold. There is noassurance that your investment will maintain itsproportionate share in the Portfolio’s profitsand losses.

• We do not actively manage the Portfolio.Except in limited circumstances, the Portfolio willhold, and may continue to buy, shares of thesame securities even if their market valuedeclines.

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Insider Buy Strategy

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Fee Table

The amounts below are estimates of the direct and indirectexpenses that you may incur based on a $10 Public Offering Price perUnit. Actual expenses may vary.

As a % of Public Amount Offering Per 100Sales Charge Price Units _________ _________

Initial sales charge 0.000% $ 0.000Deferred sales charge 1.350 13.500Creation and development fee 0.500 5.000 ______ ______Maximum sales charge 1.850% $18.500 ______ ______ ______ ______

As a % Amount of Net Per 100 Assets Units _________ _________

Estimated Organization Costs 0.574% $5.600 ______ ______ ______ ______

Estimated Annual Expenses Trustee’s fee and operating expenses 0.188% $1.835Supervisory, bookkeeping

and administrative fees 0.056 0.550 ______ ______

Total 0.244% $2.385* ______ ______ ______ ______

Example

This example helps you compare the cost of the Portfolio with otherunit trusts and mutual funds. In the example we assume that theexpenses do not change and that the Portfolio’s annual return is 5%. Youractual returns and expenses will vary. This example also assumes thatyou continue to follow the Portfolio strategy and roll your investment,including all distributions, into a new trust each year subject to a salescharge of 1.85%. Based on these assumptions, you would pay thefollowing expenses for every $10,000 you invest in the Portfolio:

1 year $ 2653 years 8135 years 1,38510 years 2,931

* The estimated annual expenses are based upon the estimated trust sizefor the Portfolio determined as of the initial date of deposit. Becausecertain of the operating expenses are fixed amounts, if the Portfolio doesnot reach the estimated size, or if the value of the Portfolio or number ofoutstanding units decline over the life of the trust, or if the actual amountof the operating expenses exceeds the estimated amounts, the actualamount of the operating expenses per 100 units would exceed theestimated amounts. In some cases, the actual amount of operatingexpenses may substantially differ from the amounts reflected above.

The maximum sales charge is 1.85% of the Public Offering Priceper Unit. There is no initial sales charge at a Public Offering Price of$10 or less. If the Public Offering Price exceeds $10 per Unit, theinitial sales charge is the difference between the total sales charge(maximum of 1.85% of the Public Offering Price) and the sum of theremaining deferred sales charge and the creation and developmentfee. The deferred sales charge is fixed at $0.135 per Unit andaccrues daily from April 10, 2020 through September 9, 2020. YourPortfolio pays a proportionate amount of this charge on the 10th dayof each month beginning in the accrual period until paid in full. Thecombination of the initial and deferred sales charges comprises the“transactional sales charge”. The creation and development fee isfixed at $0.05 per Unit and is paid at the earlier of the end of theinitial offering period (anticipated to be four months) or six monthsfollowing the Initial Date of Deposit. For more detail, see “PublicOffering Price -- General.”

Essential Information

Unit Price at Initial Date of Deposit $10.0000

Initial Date of Deposit November 7, 2019

Mandatory Termination Date March 29, 2021

Estimated Net Annual Income1 $0.22055 per Unit

Estimated Initial Distribution1 $0.05 per Unit

Record Dates 10th day of each March, June and September, commencing March 10, 2020

Distribution Dates 25th day of each March, June and September, commencing March 25, 2020

CUSIP Numbers Cash – 46145H341

Reinvest – 46145H358

Fee Based Cash – 46145H366

Fee Based Reinvest – 46145H374

1 As of close of business day prior to Initial Date of Deposit. The actualdistributions you receive will vary from the estimated amount due tochanges in the Portfolio’s fees and expenses, in actual income receivedby the Portfolio, currency fluctuations and with changes in the Portfoliosuch as the acquisition or liquidation of securities. See “Rights ofUnitholders--Estimated Distributions.”

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Insider Buy Strategy 2019-4

Portfolio______________________________________________________________________________________________________________ Cost ofNumber Market Value Securities toof Shares Name of Issuer (1) per Share (2) Portfolio (2) ___________ ___________________________________________ _____________ _____________ Communication Services - 8.53% 189 Fox Corporation - CL A $ 33.1000 $ 6,255.90+ 332 Liberty Latin America, Ltd. - CL A 19.3800 6,434.16 Consumer Discretionary - 8.36% 311 Callaway Golf Company 20.0700 6,241.77 55 Lowe’s Companies, Inc. 112.6700 6,196.85 Consumer Staples - 12.42% 144 Archer-Daniels-Midland Company 42.8800 6,174.72 220 Keurig Dr Pepper, Inc. 28.1700 6,197.40 73 Philip Morris International, Inc. 83.7000 6,110.10 Energy - 8.30% 96 Marathon Petroleum Corporation 64.2800 6,170.88 112 Phillips 66 Partners, L.P. 55.1500 6,176.80 Financials - 8.35% 164 Citizens Financial Group, Inc. 37.6800 6,179.52 69 Prudential Financial, Inc. 90.5500 6,247.95 Health Care - 12.62% 109 Bristol-Myers Squibb Company 56.9600 6,208.64 34 Cigna Corporation 183.1300 6,226.42 238 Elanco Animal Health, Inc. 26.6800 6,349.84 Industrials - 8.33% 200 American Airlines Group, Inc. 30.9600 6,192.00 84 Cubic Corporation 73.8500 6,203.40 Information Technology - 4.17% 108 SS&C Technologies Holdings, Inc. 57.4100 6,200.28 Materials - 12.31% 28 Air Products & Chemicals, Inc. 218.8500 6,127.80 109 Compass Minerals International, Inc. 55.0200 5,997.18 114 Dow, Inc. 54.2800 6,187.92 Real Estate - 8.31% 82 Agree Realty Corporation 75.6500 6,203.30 46 Crown Castle International Corporation 133.9100 6,159.86 Utilities - 8.30% 70 Consolidated Edison, Inc. 88.6200 6,203.40 76 Dominion Energy, Inc. 80.9400 6,151.44___________ ____________ 3,063 $ 148,797.53___________ _______________________ ____________

See “Notes to Portfolios”.

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Notes to Portfolio

(1) The Securities are initially represented by “regular way” contracts for the performance of which an irrevocable letter ofcredit has been deposited with the Trustee. Contracts to acquire Securities were entered into on November 6, 2019 andhave a settlement date of November 8, 2019 (see “The Portfolios”).

(2) The value of each Security is determined on the bases set forth under “Public Offering--Unit Price” as of the close of theNew York Stock Exchange on the business day before the Initial Date of Deposit. In accordance with FASB AccountingStandards Codification (“ASC”), ASC 820, Fair Value Measurements and Disclosures, the Portfolio’s investments areclassified as Level 1, which refers to security prices determined using quoted prices in active markets for identicalsecurities. Other information regarding the Securities, as of the Initial Date of Deposit, is as follows:

Profit Cost to (Loss) To Sponsor Sponsor ______________ _____________

Insider Buy Strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 148,859 $ (61)

“+” indicates that the security was issued by a foreign company.

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Sponsor and Unitholders of Invesco Unit Trusts, Series 2012

Opinion on the Financial Statements

We have audited the accompanying statement of condition (including the related portfolio schedule) of InsiderBuy Strategy 2019-4 (included in Invesco Unit Trusts, Series 2012 (the “Trust”)) as of November 7, 2019, and therelated notes (collectively referred to as the “financial statements”). In our opinion, the financial statements presentfairly, in all material respects, the financial position of the Trust as of November 7, 2019, in conformity withaccounting principles generally accepted in the United States of America.

Basis for Opinion

These financial statements are the responsibility of Invesco Capital Markets, Inc., the Sponsor. Ourresponsibility is to express an opinion on the Trust’s financial statements based on our audit. We are a publicaccounting firm registered with the Public Company Accounting Oversight Board (United States) (“PCAOB”)and are required to be independent with respect to the Trust in accordance with the U.S. federal securitieslaws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require thatwe plan and perform the audit to obtain reasonable assurance about whether the financial statements arefree of material misstatement, whether due to error or fraud. The Trust is not required to have, nor were weengaged to perform, an audit of its internal control over financial reporting. As part of our audit we arerequired to obtain an understanding of internal control over financial reporting but not for the purpose ofexpressing an opinion on the effectiveness of the Trust’s internal control over financial reporting. Accordingly,we express no such opinion.

Our audit included performing procedures to assess the risks of material misstatement of the financialstatements, whether due to error or fraud, and performing procedures that respond to those risks. Suchprocedures included examining, on a test basis, evidence regarding the amounts and disclosures in thefinancial statements. Our audit also included evaluating the accounting principles used and significantestimates made by the Sponsor, as well as evaluating the overall presentation of the financial statements. Ourprocedures included confirmation of cash or an irrevocable letter of credit deposited for the purchase ofsecurities as shown in the statement of condition as of November 7, 2019 by correspondence with The Bankof New York Mellon, Trustee. We believe that our audit provides a reasonable basis for our opinion.

/s/ GRANT THORNTON LLP

We have served as the auditor of one or more of the unit investment trusts, sponsored by Invesco CapitalMarkets, Inc. and its predecessors, since 1976.

New York, New YorkNovember 7, 2019

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STATEMENT OF CONDITIONAs of November 7, 2019

INVESTMENT IN SECURITIESContracts to purchase Securities (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 148,798 ___________ Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 148,798 ___________ ___________

LIABILITIES AND INTEREST OF UNITHOLDERSLiabilities-- Organization costs (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 833 Deferred sales charge liability (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,009 Creation and development fee liability (4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 744Interest of Unitholders-- Cost to investors (5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148,798Less: deferred sales charge, creation and development fee and organization costs (2)(4)(5)(6) . . . . . . . . . . . . . . . . 3,586 ___________ Net interest to Unitholders (5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145,212 ___________ Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 148,798 ___________ ___________Units outstanding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14,880 ___________ ___________Net asset value per Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 9.759 ___________ ___________

(1) The value of the Securities is determined by the Trustee on the bases set forth under “Public Offering--Unit Price”. The contracts to purchaseSecurities are collateralized by separate irrevocable letters of credit which have been deposited with the Trustee.

(2) A portion of the Public Offering Price represents an amount sufficient to pay for all or a portion of the costs incurred in establishing a Portfolio.The amount of these costs are set forth in the “Fee Table”. A distribution will be made as of the earlier of the close of the initial offering period(approximately three or four months, as applicable) or six months following the Initial Date of Deposit to an account maintained by the Trusteefrom which the organization expense obligation of the investors will be satisfied. To the extent that actual organization costs of a Portfolio aregreater than the estimated amount, only the estimated organization costs added to the Public Offering Price will be reimbursed to the Sponsorand deducted from the assets of the Portfolio.

(3) Represents the amount of mandatory distributions from a Portfolio on the bases set forth under “Public Offering”.(4) The creation and development fee is payable by a Portfolio on behalf of Unitholders out of the assets of the Portfolio as of the close of the initial

offering period. If Units are redeemed prior to the close of the initial public offering period, the fee will not be deducted from the proceeds.(5) The aggregate public offering price and the aggregate sales charge are computed on the bases set forth under “Public Offering”.(6) Assumes the maximum sales charge.

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THE PORTFOLIO

The Portfolio was created under the laws of the Stateof New York pursuant to a Trust Indenture and TrustAgreement (the “Trust Agreement”), dated the date ofthis prospectus (the “Initial Date of Deposit”), amongInvesco Capital Markets, Inc., as Sponsor, InvescoInvestment Advisers LLC as Supervisor, and The Bankof New York Mellon, as Trustee.

The Portfolio offers investors the opportunity topurchase Units representing proportionate interests inportfolios of securities. The Portfolio may be anappropriate medium for investors who desire toparticipate in a portfolio of securities with greaterdiversification than they might be able to acquireindividually.

On the Initial Date of Deposit, the Sponsor depositeddelivery statements relating to contracts for thepurchase of the Securities and an irrevocable letter ofcredit in the amount required for these purchases withthe Trustee. In exchange for these contracts, theTrustee delivered to the Sponsor documentationevidencing the ownership of Units of the Portfolio.Unless otherwise terminated as provided in the TrustAgreement, the Portfol io wil l terminate on theMandatory Termination Date and any remainingSecurities will be liquidated or distributed by the Trusteewithin a reasonable time. As used in this prospectus theterm “Securities” means the securities (includingcontracts to purchase these securities) listed in the“Portfolio” and any additional securities deposited intothe Portfolio.

Additional Units of the Portfolio may be issued at anytime by deposit ing in the Portfol io ( i ) addit ionalSecurities, (ii) contracts to purchase Securities togetherwith cash or irrevocable letters of credit or (iii) cash (or aletter of credit or the equivalent) with instructions topurchase additional Securities. As additional Units areissued by the Portfolio, the aggregate value of theSecurities will be increased and the fractional undividedinterest represented by each Unit may be decreased.The Sponsor may continue to make additional depositsinto the Portfolio following the Initial Date of Depositprovided that the additional deposits will be in amounts

which will maintain, as nearly as practicable, the samepercentage relationship among the number of shares ofeach Security in the Portfolio that existed immediatelyprior to the subsequent deposit. Investors mayexperience a dilution of their investments and areduction in their anticipated income because offluctuations in the prices of the Securities between thetime of the deposit and the purchase of the Securitiesand because the Portfolio will pay the associatedbrokerage or acquisition fees. In addition, during theinitial offering of Units it may not be possible to buy apart icular Security due to regulatory or tradingrestrictions, or corporate actions. While such limitationsare in effect, additional Units would be created bypurchasing each of the Securities in your Portfolio thatare not subject to those limitations. This would alsoresult in the dilution of the investment in any suchSecurity not purchased and potential variances inanticipated income. Purchases and sales of Securitiesby your Portfolio may impact the value of the Securities.This may especially be the case during the initial offeringof Units, upon Portfolio termination and in the course ofsatisfying large Unit redemptions.

Each Unit of your Portfolio initially offered representsan undivided interest in the Portfolio. At the close of theNew York Stock Exchange on the Init ial Date ofDeposit, the number of Units may be adjusted so thatthe Public Offering Price per Unit equals $10. Thenumber of Units, fractional interest of each Unit in yourPortfolio and the estimated distributions per Unit willincrease or decrease to the extent of any adjustment.To the extent that any Units are redeemed to theTrustee or additional Units are issued as a result ofadditional Securities being deposited by the Sponsor,the fractional undivided interest in your Portfoliorepresented by each unredeemed Unit will increase ordecrease accordingly, although the actual interest inyour Portfolio will remain unchanged. Units will remainoutstanding until redeemed upon tender to the Trusteeby Unitholders, which may include the Sponsor, or untilthe termination of the Trust Agreement.

The Portfolio consists of (a) the Securities (includingcontracts for the purchase thereof) listed under thePortfolio as may continue to be held from time to time in

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the Portfolio, (b) any additional Securities acquired andheld by the Portfolio pursuant to the provisions of theTrust Agreement and (c) any cash held in the relatedIncome and Capital Accounts. Neither the Sponsor northe Trustee shall be liable in any way for any contractfailure in any of the Securities.

OBJECTIVES AND SECURITIES SELECTION

The objective of the Portfolio is described in thePortfolio section. There is no assurance that thePortfolio will achieve its objective.

Vickers Stock Research, Inc., (together with itsaffiliates, the “Portfolio Consultant” for the Insider BuyStrategy) is not an affiliate of the Sponsor. The PortfolioConsultant may recommend or effect transactions in theSecurities. This may have an adverse effect on theprices of the Securities. This also may have an impacton the price the Insider Buy Strategy pays for theSecurities and the price received upon Unit redemptionsor Portfolio termination. The Portfolio Consultant may actas agent or principal in connection with the purchaseand sale of equity securities, including the Securities.The Portfolio Consultant may also issue reports andmake recommendations on the Securities. The PortfolioConsultant’s research department may receivecompensation based on commissions generated byresearch and/or sales of Units. The Insider Buy Strategyis not sponsored, sold or promoted by the PortfolioConsultant and the Portfolio Consultant does notdetermine investor suitability.

Neither the Portfolio Consultant, if any, nor theSponsor manages your Portfolio. You should note thatthe Sponsor applied the selection criteria to theSecurities for inclusion in the Portfolio prior to theInitial Date of Deposit. After this time, the Securitiesmay no longer meet the selection criteria. Should aSecurity no longer meet the selection criteria, we willgenerally not remove the Security from the Portfolio. Inoffering the Units to the public, neither the Sponsornor any broker-dealers are recommending any of theindividual Securities but rather the entire pool ofSecurities in the Portfolio, taken as a whole, which arerepresented by the Units.

The Portfolio Consultant. The Portfol ioConsultant, a subsidiary of Argus Research Group, Inc.(the “Group”), functions as the Group’s data andtechnology division, providing the investmentcommunity information and analytics on transactionsand holdings of corporate off icials, signif icantshareholders and institutions. In addition to its datacollection processes, the Portfolio Consultant’s corestrengths are its computer programming andquantitative analytics departments.

RISK FACTORS

All investments involve risk. This section describes themain risks that can impact the value of the securities inthe Portfolio. You should understand these risks beforeyou invest. If the value of the securities falls, the value ofyour Units will also fall. We cannot guarantee that yourPortfolio will achieve its objective or that your investmentreturn will be positive over any period.

The relative weighting or composition of yourPortfolio may change during the life of your Portfolio.Following the Initial Date of Deposit, the Sponsorintends to issue additional Units by depositing in yourPortfolio additional securities in a manner consistentwith the provisions described in the above sectionentitled “The Portfolio”. As described in that section, itmay not be possible to retain or continue to purchaseone or more Securities in your Portfolio. In addition, dueto certain limited circumstances described under“Portfolio Administration”, the composition of theSecurities in your Portfolio may change. Accordingly,the fluctuations in the relative weighting or compositionof your Portfolio may result in concentrations (25% ormore of the Portfol io’s assets) in securit ies of aparticular type, industry and/or geographic regiondescribed in this section.

Market Risk. Market risk is the risk that the value ofthe securities in your Portfolio will fluctuate. This couldcause the value of your Units to fall below your originalpurchase price. Market value fluctuates in response tovarious factors. These can include changes in interestrates, inflation, the financial condition of a security’sissuer, perceptions of the issuer, or ratings on a security

of the issuer. Even though your Portfolio is supervised,you should remember that we do not manage yourPortfolio. Your Portfolio will not sell a security solelybecause the market value falls as is possible in amanaged fund.

Dividend Payment Risk. Dividend payment risk isthe risk that an issuer of a security is unwilling orunable to pay dividends on a security. Stocks representownership interests in the issuers and are notobligations of the issuers. Common stockholders havea right to receive dividends only after the company hasprovided for payment of its creditors, bondholders andpreferred stockholders. Common stocks do not assuredividend payments. Dividends are paid only whendeclared by an issuer’s board of directors and theamount of any div idend may vary over t ime. I fdividends received by the Portfolio are insufficient tocover expenses, redemptions or other Portfolio costs,it may be necessary for the Portfolio to sell Securitiesto cover such expenses, redemptions or other costs.Any such sales may result in capital gains or losses toyou. See “Taxation”.

Foreign Stocks. Because your Portfolio invests inforeign stocks, your Portfolio may involve additionalrisks that differ from an investment in domestic stocks.These risks include the risk of losses due to futurepolitical and economic developments, internationaltrade condit ions, foreign withholding taxes andrestrictions on foreign investments or exchange ofsecurities, foreign currency fluctuations or restriction onexchange or repatriation of currencies.

The political, economic and social structures of someforeign countries may be less stable and more volatilethan those in the U.S. Investments in these countriesmay be subject to the risks of internal and externalconflicts, currency devaluations, foreign ownershiplimitations and tax increases. It is possible that agovernment may take over the assets or operations of acompany or impose restrictions on the exchange orexport of currency or other assets. Some countries alsomay have different legal systems that may make itdifficult for the Portfolio to vote proxies, exerciseinvestor rights, and pursue legal remedies with respectto its foreign investments. Diplomatic and political

developments, including rapid and adverse politicalchanges, social instability, regional conflicts, terrorismand war, could affect the economies, industries, andsecurities and currency markets, and the value of yourPortfolio’s investments, in non-U.S. countries. No onecan predict the impact that these factors could have onyour Portfolio’s securities.

Certain stocks may be held in the form of AmericanDepositary Receipts (“ADRs”), Global DepositaryReceipts (“GDRs”), or other similar receipts. ADRs andGDRs represent receipts for foreign common stockdeposited with a custodian (which may include theTrustee). The ADRs in the Portfolio, if any, trade in theU.S. in U.S. dol lars and are registered with theSecurities and Exchange Commission (“SEC”). GDRsare receipts, issued by foreign banks or trustcompanies, or foreign branches of U.S. banks, thatrepresent an interest in shares of either a foreign or U.S.corporation. These instruments may not necessarily bedenominated in the same currency as the securities intowhich they may be converted. ADRs and GDRsgenerally involve the same types of risks as foreigncommon stock held directly. Some ADRs and GDRsmay experience less liquidity than the underlyingcommon stocks traded in their home market. ThePortfolio may invest in sponsored or unsponsoredADRs. Unlike a sponsored ADR where the depositaryhas an exclusive relationship with the foreign issuer, anunsponsored ADR may be created by a depositaryinstitution independently and without the cooperation ofthe foreign issuer. Consequently, information concerningthe foreign issuer may be less current or reliable for anunsponsored ADR and the price of an unsponsoredADR may be more volatile than if it was a sponsoredADR. Depositaries of unsponsored ADRs are notrequired to distribute shareholder communicationsreceived from the foreign issuer or to pass throughvoting rights to its holders. The holders of unsponsoredADRs generally bear all the costs associated withestablishing the unsponsored ADR, whereas the foreignissuers typically bear certain costs in a sponsored ADR.

The purchase and sale of the foreign securities mayoccur in foreign securities markets. Certain of thefactors stated above may make it impossible to buy or

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sell them in a timely manner or may adversely affect thevalue received on a sale of securities. Custody ofcertain of the securit ies in the Portfol io may bemaintained by a global custody and clearing institutionwhich has entered into a sub-custodian relationshipwith the Trustee. In addit ion, round lot tradingrequirements exist in certain foreign securities markets.These round lot trading requirements could cause theproportional composition and diversification of yourPortfol io’s securit ies to vary when the Portfol iopurchases additional securities or sells securities tosatisfy expenses or Unit redemptions. This could have amaterial impact on investment performance andportfolio composition. Brokerage commissions andother fees generally are higher for foreign securities.Government supervision and regulation of foreignsecurities markets, currency markets, trading systemsand brokers may be less than in the U.S. Theprocedures and rules governing foreign transactionsand custody (holding of the Portfolio’s assets) also mayinvolve delays in payment, delivery or recovery ofmoney or investments.

Foreign companies may not be subject to the samedisclosure, accounting, auditing and financial reportingstandards and practices as U.S. companies. Thus,there may be less information publicly available aboutforeign companies than about most U.S. companies.

Certain foreign securities may be less liquid (harder tosell) and more volatile than many U.S. securities. Thismeans the Portfolio may at times be unable to sell foreignsecurities in a timely manner or at favorable prices.

Because securities of foreign issuers not listed on aU.S. securities exchange generally pay dividends andtrade in foreign currencies, the U.S. dollar value of thesesecurities and dividends will vary with fluctuations inforeign exchange rates. Most foreign currencies havefluctuated widely in value against the U.S. dollar forvarious economic and political reasons. To determinethe value of foreign securities or their dividends, theTrustee will estimate current exchange rates for therelevant currencies based on activity in the variouscurrency exchange markets. However, these marketscan be quite volatile depending on the activity of thelarge international commercial banks, various central

banks, large multi-national corporations, speculatorsand other buyers and sellers of foreign currencies.Since actual foreign currency transactions may not beinstantly reported, the exchange rates estimated by theTrustee may not reflect the amount the Portfolio wouldreceive in U.S. dollars, had the Trustee sold anyparticular currency in the market. The value of theSecurities in terms of U.S. dollars, and therefore thevalue of your Units, will decline if the U.S. dollardecreases in value relative to the value of the currenciesin which the Securities trade.

Industry Risks. The Portfol io may investsignificantly in certain industries. Any negative impacton the related industry will have a greater impact on thevalue of Units than on a portfolio diversified over severalindustries. You should understand the risks of theseindustries before you invest.

Consumer Discretionary and Consumer StaplesIssuers. Your Portfolio invests significantly in companiesthat manufacture or sell various consumer products.General risks of these companies include the overallstate of the economy, intense competit ion andconsumer spending trends. A decline in the economywhich results in a reduction of consumers’ disposableincome can negatively impact spending habits. Globalfactors including political developments, imposition ofimport controls, fluctuations in oil prices, and changesin exchange rates may adversely affect issuers ofconsumer products and services.

Competitiveness in the retail industry may requirelarge capital outlays for the installation of automatedcheckout equipment to control inventory, track the saleof items and gauge the success of sales campaigns.Retailers who sell their products over the Internet havethe potential to access more consumers, but mayrequire sophisticated technology to remain competitive.Changes in demographics and consumer tastes canalso affect the demand for, and the success of,consumer products and services in the marketplace.Consumer products and services companies may besubject to government regulation affecting theirproducts and operations which may negatively impactperformance. Tobacco companies may be adverselyaffected by new laws, regulations and litigation.

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Liquidity Risk. Liquidity risk is the risk that thevalue of a security will fall if trading in the security islimited or absent. The market for certain investmentsmay become less liquid or illiquid due to adversechanges in the conditions of a particular issuer or dueto adverse market or economic conditions. In theabsence of a liquid trading market for a particularsecurity, the price at which such security may be soldto meet redemptions, as well as the value of the Unitsof your Portfolio, may be adversely affected. No onecan guarantee that a liquid trading market will exist forany security.

Legislation/Litigation. From time to time, variouslegislative initiatives are proposed in the United Statesand abroad which may have a negative impact oncertain of the companies represented in the Portfolio oron the tax treatment of your Portfolio or of yourinvestment in the Portfolio. In addition, l it igationregarding any of the issuers of the Securities or of theindustries represented by these issuers may negativelyimpact the share prices of these Securities. No one canpredict what impact any pending or threatened litigationwill have on the share prices of the Securities.

No FDIC Guarantee. An investment in yourPortfolio is not a deposit of any bank and is not insuredor guaranteed by the Federal Deposit InsuranceCorporation or any other government agency.

PUBLIC OFFERING

General. Units are offered at the Public OfferingPrice which consists of the net asset value per Unit plusorganization costs plus the sales charge. The net assetvalue per Unit is the value of the securities, cash andother assets in your Portfolio reduced by the liabilities ofthe Portfolio divided by the total Units outstanding. Themaximum sales charge equals 1.85% of the PublicOffering Price per Unit (1.885% of the aggregateoffering price of the Securities) at the time of purchase.

The initial sales charge is the difference between thetotal sales charge amount (maximum of 1.85% of thePublic Offering Price per Unit) and the sum of theremaining fixed dollar deferred sales charge and thefixed dollar creation and development fee (initially $0.185

per Unit). Depending on the Public Offering Price perUnit, you pay the initial sales charge at the time you buyUnits. The deferred sales charge is fixed at $0.135 perUnit. Your Portfolio pays the deferred sales charge ininstallments as described in the “Fee Table.” If anydeferred sales charge payment date is not a businessday, we will charge the payment on the next businessday. If you purchase Units after the initial deferred salescharge payment, you will only pay that portion of thepayments not yet collected. If you redeem or sell yourUnits prior to collection of the total deferred salescharge, you will pay any remaining deferred sales chargeupon redemption or sale of your Units. The initial anddeferred sales charges are referred to as the“transactional sales charge.” The transactional salescharge does not include the creation and developmentfee which compensates the Sponsor for creating anddeveloping your Portfolio and is described under“Expenses.” The creation and development fee is fixedat $0.05 per Unit. Your Portfolio pays the creation anddevelopment fee as of the close of the initial offeringperiod as described in the “Fee Table.” If you redeem orsell your Units prior to collection of the creation anddevelopment fee, you will not pay the creation anddevelopment fee upon redemption or sale of your Units.After the initial offering period the maximum sales chargewill be reduced by 0.50%, reflecting the previouscollection of the creation and development fee. Becausethe deferred sales charge and creation and developmentfee are fixed dollar amounts per Unit, the actual chargeswill exceed the percentages shown in the “Fee Table” ifthe Public Offering Price per Unit falls below $10 and willbe less than the percentages shown in the “Fee Table” ifthe Public Offering Price per Unit exceeds $10. In noevent will the maximum total sales charge exceed1.85% of the Public Offering Price per Unit.

The “Fee Table” shows the sales charge calculationat a $10 Public Offering Price per Unit. At a $10 PublicOffering Price, there is no initial sales charge during theinitial offering period. If the Public Offering Priceexceeds $10 per Unit, you will pay an initial salescharge equal to the difference between the total salescharge and the sum of the remaining deferred salescharge and the creation and development fee. For

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example, if the Public Offering Price per Unit rose to$14, the maximum sales charge would be $0.259(1.85% of the Public Offering Price per Unit), consistingof an initial sales charge of $0.074, a deferred salescharge of $0.135 and the creation and developmentfee of $0.050.

Since the deferred sales charge and creation anddevelopment fee are fixed dollar amounts per Unit, yourPortfol io must charge these amounts per Unitregardless of any decrease in net asset value. However,if the Public Offering Price per Unit falls to the extentthat the maximum sales charge percentage results in adollar amount that is less than the combined fixed dollaramounts of the deferred sales charge and creation anddevelopment fee, your initial sales charge will be a creditequal to the amount by which these fixed dollar chargesexceed your sales charge at the time you buy Units. Insuch a situation, the value of securities per Unit wouldexceed the Public Offering Price per Unit by the amountof the initial sales charge credit and the value of thosesecurities will fluctuate, which could result in a benefit ordetriment to Unitholders that purchase Units at thatprice. The initial sales charge credit is paid by theSponsor and is not paid by the Portfolio. If the PublicOffering Price per Unit fell to $6, the maximum salescharge would be $0.111 (1.85% of the Public OfferingPrice per Unit), which consists of an initial sales charge(credit) of -$0.074, a deferred sales charge of $0.135and a creation and development fee of $0.050.

The actual sales charge that may be paid by aninvestor may differ slightly from the sales chargesshown herein due to rounding that occurs in thecalculation of the Public Offering Price and in thenumber of Units purchased.

The minimum purchase is 100 Units (25 Units forretirement accounts) but may vary by selling firm.Certain broker-dealers or selling firms may charge anorder handling fee for processing Unit purchases.

Reducing Your Sales Charge. The Sponsoroffers ways for you to reduce the sales charge that youpay. It is your financial professional’s responsibility toalert the Sponsor of any discount when you purchaseUnits. Before you purchase Units you must also inform

your financial professional of your qualification for anydiscount to be eligible for a reduced sales charge. Sincethe deferred sales charges and creation anddevelopment fee are fixed dollar amounts per Unit, yourPortfol io must charge these amounts per Unitregardless of any discounts. However, if you are eligibleto receive a discount such that your total sales chargeis less than the fixed dollar amounts of the deferredsales charges and creation and development fee, youwill receive a credit equal to the difference between yourtotal sales charge and these fixed dollar charges at thetime you buy Units.

Fee Accounts. Investors may purchase Units throughregistered investment advisers, certified financialplanners and registered broker-dealers who in eachcase either charge periodic fees for brokerage services,f inancial planning, investment advisory or assetmanagement services, or provide such services inconnection with the establishment of an investmentaccount for which a comprehensive “fee based” charge(“Fee Based”) is imposed (“Fee Accounts”). If Units ofthe Portfolio are purchased for a Fee Account and thePortfolio is subject to a Fee Based charge (i.e., thePortfolio is “Fee Based Eligible”), then the purchase willnot be subject to the transactional sales charge but willbe subject to the creation and development fee of$0.05 per Unit that is retained by the Sponsor. Pleaserefer to the section called “Fee Accounts” for additionalinformation on these purchases. The Sponsor reservesthe right to limit or deny purchases of Units described inthis paragraph by investors or selling firms whosefrequent trading activity is determined to be detrimentalto the Portfolio. Fee Based Eligible Units are not eligiblefor any sales charge discounts in addition to that whichis described in this paragraph and under the “FeeAccounts” section found below.

Employees. Employees, officers and directors(including their spouses (or the equivalent if recognizedunder local law) and children or step-children under 21living in the same household, parents or step-parentsand trustees, custodians or fiduciaries for the benefit ofsuch persons) of Invesco Capital Markets, Inc. and itsaffiliates, and dealers and their affiliates may purchaseUnits at the Public Offering Price less the applicable

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dealer concession. All employee discounts are subjectto the pol icies of the related sel l ing f irm. Onlyemployees, officers and directors of companies thatallow their employees to participate in this employeediscount program are eligible for the discounts.

Distribution Reinvestments. We do not charge anysales charge when you reinvest distributions from yourPortfolio into additional Units of your Portfolio. Since thedeferred sales charges and creation and developmentfee are fixed dollar amounts per unit, your Portfolio mustcharge these amounts per unit regardless of thisdiscount. If you elect to reinvest distributions, theSponsor will credit you with additional Units with adollar value sufficient to cover the amount of anyremaining deferred sales charge and creation anddevelopment fee that will be collected on such Units atthe time of reinvestment. The dollar value of these Unitswill fluctuate over time.

Unit Price. The Public Offering Price of Units willvary from the amounts stated under “EssentialInformation” in accordance with fluctuations in the pricesof the underlying Securities in the Portfolio. The initialprice of the Securities upon deposit by the Sponsor wasdetermined by the Trustee. The Trustee will generallydetermine the value of the Securities as of the EvaluationTime on each business day and will adjust the PublicOffering Price of Units accordingly. The Evaluation Timeis the close of the New York Stock Exchange on eachbusiness day. The term “business day”, as used hereinand under “Rights of Unitholders--Redemption of Units”,means any day on which the New York Stock Exchangeis open for regular trading. The Public Offering Price perUnit will be effective for all orders received prior to theEvaluation Time on each business day. Orders receivedby the Sponsor prior to the Evaluation Time and ordersreceived by authorized financial professionals prior to theEvaluation Time that are properly transmitted to theSponsor by the time designated by the Sponsor, arepriced based on the date of receipt. Orders received bythe Sponsor after the Evaluation Time, and ordersreceived by authorized financial professionals after theEvaluation Time or orders received by such persons thatare not transmitted to the Sponsor until after the timedesignated by the Sponsor, are priced based on the

date of the next determined Public Offering Price perUnit provided they are received timely by the Sponsor onsuch date. It is the responsibility of authorized financialprofessionals to transmit orders received by them to theSponsor so they will be received in a timely manner.

The value of portfolio securities is based on thesecurities’ market price when available. When a marketprice is not readily available, including circumstancesunder which the Trustee determines that a security’smarket price is not accurate, a portfolio security isvalued at its fair value, as determined under proceduresestablished by the Trustee or an independent pricingservice used by the Trustee. In these cases, thePortfolio’s net asset value will reflect certain portfoliosecurities’ fair value rather than their market price. Withrespect to securities that are primarily listed on foreignexchanges, the value of the portfolio securities maychange on days when you will not be able to purchaseor sell Units. The value of any foreign securities is basedon the applicable currency exchange rate as of theEvaluation Time. The Sponsor wil l provide pricedissemination and oversight services to the Portfolio.

During the initial offering period, part of the PublicOffering Price represents an amount that will pay thecosts incurred in establishing your Portfolio. Thesecosts include the costs of preparing documents relatingto the Portfolio (such as the registration statement,prospectus, trust agreement and legal documents),federal and state registration fees, fees paid to anyPortfolio Consultant for assisting the Sponsor in theselection process, the initial fees and expenses of theTrustee and the initial audit. Your Portfolio will sellsecurities to reimburse us for these costs at the end ofthe initial offering period or after six months, if earlier.The value of your Units will decline when the Portfoliopays these costs.

Unit Distribution. Units will be distributed to thepublic by the Sponsor, broker-dealers and others at thePublic Offer ing Price. Units repurchased in thesecondary market, if any, may be offered by thisprospectus at the secondary market Public OfferingPrice in the manner described above.

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Unit Sales Concessions. Brokers, dealers and otherswil l be al lowed a regular concession or agencycommission in connection with the distribution of Unitsduring the initial offering period of 1.25% of the PublicOffering Price per Unit.

Volume Concession Based Upon Annual Sales. Asdescribed below, broker-dealers and other sellingagents may in certain cases be eligible for an additionalconcession based upon their annual eligible sales of allInvesco fixed income and equity unit investment trusts.Eligible sales include all units of any Invesco unitinvestment trust underwritten or purchased directly fromInvesco during a trust’s initial offering period. Forpurposes of this concession, trusts designated as either“Invesco Unit Trusts, Taxable Income Series” or“Invesco Unit Trusts, Municipal Series” are fixed incometrusts, and trusts designated as “Invesco Unit TrustsSeries” are equity trusts. In addition to the regularconcessions or agency commissions described abovein “Unit Sales Concessions” all broker-dealers and othersell ing firms wil l be eligible to receive additionalcompensation based on total initial offering period salesof all eligible Invesco unit investment trusts during theprevious consecutive 12-month period through the endof the most recent month. The Volume Concession, asapplicable to equity and fixed income trust units, is setforth in the following table:

Volume Concession ____________________ Total Sales Equity Trust Fixed Income (in millions) Units Trust Units______________________ ____________ ______________

$25 but less than $100 0.035% 0.035%$100 but less than $150 0.050 0.050$150 but less than $250 0.075 0.075$250 but less than $1,000 0.100 0.100$1,000 but less than $5,000 0.125 0.100$5,000 but less than $7,500 0.150 0.100$7,500 or more 0.175 0.100

Broker-dealers and other selling firms will not receivethe Volume Concession on the sale of units purchasedin Fee Accounts, however, such sales will be included indetermining whether a firm has met the sales levelbreakpoints set forth in the Volume Concession tableabove. Secondary market sales of all unit investmenttrusts are excluded for purposes of the Volume

Concession. Eligible dealer firms and other sellingagents include clearing firms that place orders withInvesco and provide Invesco with information withrespect to the representatives who initiated suchtransactions. Eligible dealer firms and other sellingagents will not include firms that solely provide clearingservices to other broker-dealer firms or firms who placeorders through clearing firms that are eligible dealers. Wereserve the right to change the amount of theconcessions or agency commissions from time to time.For a trust to be eligible for this additional compensation,the trust’s prospectus must include disclosure related tothis additional compensation.

Additional Information. Except as provided in thissection, any sales charge discount provided toinvestors will be borne by the selling broker-dealer oragent. For all secondary market transactions the totalconcession or agency commission will amount to 80%of the applicable sales charge. Notwithstandinganything to the contrary herein, in no case shall the totalof any concessions, agency commissions and anyadditional compensation allowed or paid to any broker,dealer or other distributor of Units with respect to anyindividual transaction exceed the total sales chargeapplicable to such transaction. The Sponsor reservesthe right to reject, in whole or in part, any order for thepurchase of Units and to change the amount of theconcession or agency commission to dealers andothers from time to time.

We may provide, at our own expense and out of ourown profits, additional compensation and benefits tobroker-dealers who sell Units of the Portfolio and ourother products. This compensation is intended to resultin additional sales of our products and/or compensatebroker-dealers and financial advisors for past sales. Wemay make these payments for marketing, promotionalor related expenses, including, but not limited to,expenses of entertaining retail customers and financialadvisors, advert ising, sponsorship of events orseminars, obtaining shelf space in broker-dealer firmsand similar activities designed to promote the sale ofthe Portfolio and our other products. Fees may includepayment for travel expenses, including lodging, incurredin connection with trips taken by invited registered

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representatives for meetings or seminars of a businessnature. These arrangements will not change the priceyou pay for your Units.

Sponsor Compensation. The Sponsor will receivethe total sales charge applicable to each transaction.Except as provided under “Unit Distribution,” any salescharge discount provided to investors will be borne bythe selling dealer or agent. In addition, the Sponsor willrealize a profit or loss as a result of the differencebetween the price paid for the Securities by theSponsor and the cost of the Securities to the Portfolioon the Initial Date of Deposit as well as on subsequentdeposits. See “Notes to Portfolio”. The Sponsor has notparticipated as sole underwriter or as manager or as amember of the underwriting syndicates or as an agentin a private placement for any of the Securities. TheSponsor may realize profit or loss as a result of thepossible fluctuations in the market value of Units heldby the Sponsor for sale to the public. In maintaining asecondary market, the Sponsor will realize profits orlosses in the amount of any difference between theprice at which Units are purchased and the price atwhich Units are resold (which price includes theapplicable sales charge) or from a redemption ofrepurchased Units at a price above or below thepurchase price. Cash, if any, made available to theSponsor prior to the date of settlement for the purchaseof Units may be used in the Sponsor’s business andmay be deemed to be a benefit to the Sponsor, subjectto the limitations of the Securities Exchange Act of1934, as amended (“1934 Act”).

The Sponsor or an affiliate may have participated in apublic offering of one or more of the Securities. TheSponsor, an affiliate or their employees may have a longor short position in these Securities or related securities.An affiliate may act as a specialist or market maker forthese Securities. An officer, director or employee of theSponsor or an affiliate may be an officer or director forissuers of the Securities.

Market for Units. Although it is not obligated to doso, the Sponsor may maintain a market for Units and topurchase Units at the secondary market repurchaseprice (which is described under “Right of Unitholders--Redemption of Units”). The Sponsor may discontinue

purchases of Units or discontinue purchases at thisprice at any time. In the event that a secondary marketis not maintained, a Unitholder will be able to dispose ofUnits by tendering them to the Trustee for redemptionat the Redemption Price. See “Rights of Unitholders--Redemption of Units”. Unitholders should contact theirbroker to determine the best price for Units in thesecondary market. Units sold prior to the time the entiredeferred sales charge has been collected will beassessed the amount of any remaining deferred salescharge at the time of sale. The Trustee will notify theSponsor of any Units tendered for redemption. If theSponsor’s bid in the secondary market equals orexceeds the Redemption Price per Unit, i t maypurchase the Units not later than the day on whichUnits would have been redeemed by the Trustee. TheSponsor may sell repurchased Units at the secondarymarket Public Offering Price per Unit.

RETIREMENT ACCOUNTS

Units are available for purchase in connection withcertain types of tax-sheltered retirement plans, includingIndividual Retirement Accounts for individuals,Simplified Employee Pension Plans for employees,qualified plans for self-employed individuals, andqualified corporate pension and profit sharing plans foremployees. The minimum purchase for these accountsis reduced to 25 Units but may vary by selling firm. Thepurchase of Units may be l imited by the plans’provisions and does not itself establish such plans.

FEE ACCOUNTS

As described above, Units may be available forpurchase by investors in Fee Accounts where thePortfolio is Fee Based Eligible. You should consult yourfinancial professional to determine whether you canbenefit from these accounts. This table illustrates thesales charge you will pay if the Portfolio is Fee BasedEligible as a percentage of the initial Public OfferingPrice per Unit on the Initial Date of Deposit (thepercentage will vary thereafter).

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Initial sales charge 0.00%Deferred sales charge 0.00 ______ Transactional sales charge 0.00% ______ ______Creation and development fee 0.50% ______ Total sales charge 0.50% ______ ______

You should consult the “Public Offering--ReducingYour Sales Charge” section for specific information onthis and other sales charge discounts. That sectiongoverns the calculation of all sales charge discounts.The Sponsor reserves the r ight to l imit or denypurchases of Units in Fee Accounts by investors orsel l ing f irms whose frequent trading activity isdetermined to be detrimental to the Portfolio. Topurchase Units in these Fee Accounts, your financialprofessional must purchase Units designated with oneof the Fee Based CUSIP numbers set forth under“Essential Information,” either Fee Based Cash for cashdistributions or Fee Based Reinvest for the reinvestmentof distributions in additional Units, if available. See“Rights of Unitholders--Reinvestment Option.”

RIGHTS OF UNITHOLDERS

Distributions. Dividends and interest, net ofexpenses, and any net proceeds from the sale ofSecurities received by the Portfolio will generally bedistributed to Unitholders on each Distribution Date toUnitholders of record on the preceding Record Date.These dates appear under “Essential Information”.Distributions made by the securities in your Portfolioinclude ordinary income, but may also include sourcesother than ordinary income such as returns of capital,loan proceeds, short-term capital gains and long-termcapital gains (see “Taxation--Distributions”). In addition,the Portfolio will generally make required distributions atthe end of each year because each is structured as a“regulated investment company” for federal taxpurposes. Unitholders wi l l also receive a f inaldistribution of income when their Portfolio terminates. Aperson becomes a Unitholder of record on the date ofsettlement (generally two business days after Units areordered or any shorter period as may be required by theapplicable rules under the 1934 Act). Unitholders mayelect to receive distributions in cash or to have

distributions reinvested into additional Units. See“Rights of Unitholders--Reinvestment Option”.

Dividends and interest received by the Portfolio arecredited to the Income Account of the Portfolio. Otherreceipts (e.g., capital gains, proceeds from the sale ofSecurities, etc.) are credited to the Capital Account.Proceeds received on the sale of any Securities, to theextent not used to meet redemptions of Units or paydeferred sales charges, fees or expenses, will bedistributed to Unitholders. Proceeds received from thedisposition of any Securities after a Record Date andprior to the following Distribution Date will be held in theCapital Account and not distributed until the nextDistribution Date. Any distribution to Unitholdersconsists of each Unitholder’s pro rata share of theavailable cash in the Income and Capital Accounts as ofthe related Record Date.

Estimated Distributions. The estimated initialdistribution and estimated net annual income per Unitmay be shown under “Essential Information.” Generally,the estimate of the income a Portfolio may receive isbased on the most recent ordinary quarterly dividendsdeclared by an issuer, the most recent interim and finaldividends declared for certain foreign issuers, orscheduled income payments (in all cases accounting forany applicable foreign withholding taxes). In certaincases, estimated net annual income may also be basedupon several recently declared dividends (or issueddistributions) of an issuer. However, common stocks donot assure dividend payments, and therefore theamount of future dividend income to your Portfolio isuncertain. The actual net annual distributions maydecrease over time because a portion of the Securitiesincluded in the Portfolio will be sold to pay for theorganization costs, deferred sales charge and creationand development fee. Securities may also be sold topay regular fees and expenses during the Portfolio’s life.Dividend and income conventions for certaincompanies and/or certain countries differ from thosetypically used in the United States and in certaininstances, dividends/income paid or declared overseveral years or other periods may be used to estimateannual distributions. The actual net annual incomedistributions you receive will vary from the estimated

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amount due to changes in the Portfolio’s fees andexpenses, in actual income received by the Portfolio,currency fluctuations and with changes in the Portfoliosuch as the acquisition, call, maturity or sale ofSecurities. Due to these and various other factors,actual income received by the Portfolio will most likelydiffer from the most recent dividends or scheduledincome payments.

Reinvestment Option. Unitholders may havedistributions automatically reinvested in additional Unitswithout a sales charge (to the extent Units may belawfully offered for sale in the state in which theUnitholder resides). The CUSIP numbers for either“Cash” distributions or “Reinvest” for the reinvestmentof distr ibut ions are set forth under “Essent ia lInformation”. Brokers and dealers can use the DividendReinvestment Service through Depository TrustCompany (“DTC”) or purchase a Reinvest (or FeeBased Reinvest in the case of Fee Based Eligible Unitsheld in Fee Accounts) CUSIP, if available. To participatein this reinvestment option, a Unitholder must file withthe Trustee a written notice of election, together withany other documentation that the Trustee may thenrequire, at least five days prior to the related RecordDate. A Unitholder’s election will apply to all Unitsowned by the Unitholder and will remain in effect untilchanged by the Unitholder. The reinvestment option isnot offered during the 30 calendar days prior totermination. If Units are unavailable for reinvestment orthis reinvestment option is no longer avai lable,distributions will be paid in cash. Distributions will betaxable to Unitholders if paid in cash or automaticallyreinvested in additional Units. See “Taxation”.

A participant may elect to terminate his or herreinvestment plan and receive future distributions incash by notifying the Trustee in writing no later than fivedays before a Distribution Date. The Sponsor shallhave the r ight to suspend or terminate thereinvestment plan at any time. The reinvestment plan issubject to availability or limitation by each broker-dealeror sel l ing f i rm. Broker-dealers may suspend orterminate the offering of a reinvestment plan at anytime. Please contact your financial professional foradditional information.

Redemption of Units. All or a portion of your Unitsmay be tendered to The Bank of New York Mellon, theTrustee, for redemption at Unit Investment TrustDivision, 111 Sanders Creek Parkway, East Syracuse,New York 13057, on any day the New York StockExchange is open. No redemption fee will be chargedby the Sponsor or the Trustee, but you are responsiblefor applicable governmental charges, if any. Unitsredeemed by the Trustee will be canceled. You mayredeem all or a portion of your Units by sending arequest for redemption to your bank or broker-dealerthrough which you hold your Units. No later than twobusiness days (or any shorter period as may berequired by the applicable rules under the 1934 Act)following satisfactory tender, the Unitholder will beentitled to receive in cash an amount for each Unitequal to the Redemption Price per Unit next computedon the date of tender. The “date of tender” is deemed tobe the date on which Units are received by the Trustee,except that with respect to Units received by theTrustee after the Evaluation Time or on a day which isnot a business day, the date of tender is deemed to bethe next business day. Redemption requests receivedby the Trustee after the Evaluation T ime, andredemption requests received by authorized financialprofessionals after the Evaluation Time or redemptionrequests received by such persons that are nottransmitted to the Trustee until after the time designatedby the Trustee, are priced based on the date of the nextdetermined redemption price provided they are receivedtimely by the Trustee on such date. It is theresponsibility of authorized financial professionals totransmit redemption requests received by them to theTrustee so they will be received in a timely manner.Certain broker-dealers or selling firms may charge anorder handling fee for processing redemption requests.Units redeemed directly through the Trustee are notsubject to such fees.

Unitholders tendering 1,000 or more Units (or suchhigher amount as may be required by your broker-dealeror selling agent) for redemption may request an in kinddistribution of Securities equal to the Redemption Priceper Unit on the date of tender. Unitholders may notrequest an in kind distribution during the initial offering

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period or within 30 calendar days of the Portfolio’stermination. The Portfolio generally will not offer in kinddistributions of portfolio securities that are held in foreignmarkets. An in kind distribution will be made by theTrustee through the distribution of each of the Securitiesin book-entry form to the account of the Unitholder’sbroker-dealer at DTC. Amounts representing fractionalshares will be distributed in cash. The Trustee mayadjust the number of shares of any Security included in aUnitholder’s in kind distr ibution to faci l i tate thedistribution of whole shares. The in kind distributionoption may be modified or discontinued at any timewithout notice. Notwithstanding the foregoing, if theUnitholder requesting an in kind distribution is theSponsor or an affiliated person of the Portfolio, theTrustee may make an in kind distribution to suchUnitholder provided that no one with a pecuniaryincentive to influence the in kind distribution mayinfluence selection of the distributed securities, thedistribution must consist of a pro rata distribution of allportfolio securities (with limited exceptions) and the inkind distribution may not favor such affiliated person tothe detriment of any other Unitholder. Unitholders willincur transaction costs in liquidating securities receivedin an in-kind distribution, and any such securitiesreceived will be subject to market risk until sold. In theevent that any securities received in-kind are illiquid,Unitholders will bear the risk of not being able to sellsuch securities in the near term, or at all.

The Trustee may sell Securities to satisfy Unitredemptions. To the extent that Securit ies areredeemed in kind or sold, the size of the Portfolio willbe, and the diversity of the Portfolio may be, reduced.Sales may be required at a time when Securities wouldnot otherwise be sold and may result in lower pricesthan might otherwise be realized. The price receivedupon redemption may be more or less than the amountpaid by the Unitholder depending on the value of theSecurities at the time of redemption. Special federalincome tax consequences will result if a Unitholderrequests an in kind distribution. See “Taxation”.

The Redemption Price per Unit and the secondarymarket repurchase price per Unit are equal to the prorata share of each Unit in the Portfolio determined on

the basis of (i) the cash on hand in the Portfolio, (ii) thevalue of the Securities in the Portfolio and (iii) dividendsor other income distr ibutions receivable on theSecurities in the Portfolio trading ex-dividend as of thedate of computation, less (a) amounts representingtaxes or other governmental charges payable out of thePortfolio, (b) the accrued expenses of the Portfolio(including costs associated with liquidating securitiesafter the end of the initial offering period) and (c) anyunpaid deferred sales charge payments. During theinitial offering period, the redemption price and thesecondary market repurchase price will not be reducedby estimated organization costs or the creation anddevelopment fee. For these purposes, the Trustee willdetermine the value of the Securities as describedunder “Public Offering--Unit Price”.

The right of redemption may be suspended andpayment postponed for any period during which theNew York Stock Exchange is closed, other than forcustomary weekend and holiday closings, or any periodduring which the SEC determines that trading on thatExchange is restricted or an emergency exists, as aresult of which disposal or evaluation of the Securities isnot reasonably practicable, or for other periods as theSEC may permit.

Exchange Option. When you redeem Units of yourPortfol io or when your Portfol io terminates (see“Rollover” below), you may be able to exchange yourUnits for units of other Invesco unit trusts. You shouldcontact your financial professional for more informationabout trusts currently available for exchanges. Beforeyou exchange Units, you should read the prospectus ofthe new trust carefully and understand the risks andfees. You should then discuss this option with yourfinancial professional to determine whether yourinvestment goals have changed, whether current trustssuit you and to discuss tax consequences. A rollover orexchange is a taxable event to you. We maydiscontinue this option at any time.

Rollover. We may offer a subsequent series of thePortfolio for a Rollover when the Portfolio terminates.

On the Mandatory Termination Date you will have theoption to (1) participate in a Rollover and have your

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Units reinvested into a subsequent trust series or(2) receive a cash distribution.

If you elect to participate in a cash Rollover, yourUnits will be redeemed on the Mandatory TerminationDate. As the redemption proceeds become available,the proceeds (including dividends) will be invested in anew trust series at the public offering price for the newtrust. The Trustee will attempt to sell Securities to satisfythe redemption as quickly as practicable on theMandatory Termination Date. We do not anticipate thatthe sale period will be longer than one day, however,certain factors could affect the ability to sell theSecurities and could impact the length of the saleperiod. The liquidity of any Security depends on thedaily trading volume of the Security and the amountavailable for redemption and reinvestment on any day.

We may make subsequent trust series available forsale at various times during the year. Of course, wecannot guarantee that a subsequent trust or sufficientunits will be available or that any subsequent trusts willoffer the same investment strategies or objectives asthe current Portfolios. We cannot guarantee that aRol lover wi l l avoid any negative market priceconsequences resulting from trading large volumes ofsecurit ies. Market price trends may make itadvantageous to sell or buy securities more quickly ormore slowly than permitted by the Portfolio procedures.We may, in our sole discretion, modify a Rollover orstop creating units of a trust at any time regardless ofwhether al l proceeds of Unitholders have beenreinvested in a Rollover. If we decide not to offer asubsequent series, Unitholders will be notified prior tothe Mandatory Termination Date. Cash which has notbeen reinvested in a Rollover will be distributed toUnitholders shortly after the Mandatory TerminationDate. Rollover part icipants may receive taxabledividends or realize taxable capital gains which arereinvested in connection with a Rollover but may not beentitled to a deduction for capital losses due to the“wash sale” tax rules. Due to the reinvestment in asubsequent trust, no cash will be distributed to pay anytaxes. See “Taxation”.

Units. Ownership of Units is evidenced in book-entryform only and will not be evidenced by certificates. Units

purchased or held through your bank or broker-dealerwill be recorded in book-entry form and credited to theaccount of your bank or broker-dealer at DTC. Units aretransferable by contacting your bank or broker-dealerthrough which you hold your Units. Transfer, and therequirements therefore, wil l be governed by theapplicable procedures of DTC and your agreement withthe DTC participant in whose name your Units areregistered on the transfer records of DTC.

Reports Provided. Unitholders will receive astatement of dividends and other amounts received bythe Portfolio for each distribution. Within a reasonabletime after the end of each year, each person who was aUnitholder during that year will receive a statementdescribing dividends and capital received, actualPortfolio distributions, Portfolio expenses, a list of theSecurities and other Portfolio information. Unitholdersmay obtain evaluations of the Securities upon requestto the Trustee. If you have questions regarding youraccount or your Portfolio, please contact your financialadvisor or the Trustee. The Sponsor does not haveaccess to individual account information.

PORTFOLIO ADMINISTRATION

Portfolio Administration. The Portfolios are notmanaged funds and, except as provided in the TrustAgreement, Securities generally will not be sold orreplaced. The Sponsor may, however, direct thatSecurities be sold in certain limited circumstances toprotect the Portfol io based on advice from theSupervisor. These situations may include events suchas the issuer having defaulted on payment of any of itsoutstanding obligations or the price of a Security hasdeclined to such an extent or other credit factors existso that in the opinion of the Supervisor retention of theSecurity would be detrimental to the Portfolio. If a publictender offer has been made for a Security or a mergeror acquisition has been announced affecting a Security,the Trustee may either sell the Security or accept anoffer if the Supervisor determines that the sale orexchange is in the best interest of Unitholders. TheTrustee will distribute any cash proceeds to Unitholders.In addition, the Trustee may sell Securities to redeemUnits or pay Portfolio expenses or deferred sales

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charges. If securities or property are acquired by thePortfolio, the Sponsor may direct the Trustee to sell thesecurities or property and distribute the proceeds toUnitholders or to accept the securities or property fordeposit in the Portfolio. Should any contract for thepurchase of any of the Securities fail, the Sponsor will(unless substantially all of the moneys held in thePortfolio to cover the purchase are reinvested insubstitute Securities in accordance with the TrustAgreement) refund the cash and sales chargeattributable to the failed contract to all Unitholders on orbefore the next Distribution Date.

The Sponsor may direct the reinvestment ofproceeds of the sale of Securities if the sale is thedirect result of serious adverse credit factors which, inthe opinion of the Sponsor, would make retention ofthe Securities detrimental to your Portfolio. In such acase, the Sponsor may, but is not obligated to, directthe reinvestment of sale proceeds in any othersecurities that meet the criteria for inclusion in yourPortfolio on the Initial Date of Deposit. The Sponsormay also instruct the Trustee to take action necessaryto ensure that your Portfolio continues to satisfy thequalifications of a regulated investment company andto avoid imposition of tax on undistributed income ofthe Portfolio.

When your Portfolio sells Securities, the compositionand diversity of the Securities in the Portfolio may bealtered. In order to obtain the best price for thePortfolio, it may be necessary for the Supervisor tospecify minimum amounts (generally 100 shares) inwhich blocks of Securities are to be sold. In effectingpurchases and sales of portfolio securities, the Sponsormay direct that orders be placed with and brokeragecommissions be paid to brokers, including brokerswhich may be affiliated with the Portfolio, the Sponsoror dealers participating in the offering of Units.

Pursuant to an exemptive order, your Portfolio maybe permitted to sell Securities to a new trust when itterminates if those Securities are included in the newtrust. The exemption may enable your Portfolio toeliminate commission costs on these transactions. Theprice for those securities will be the closing sale price

on the sale date on the exchange where the Securitiesare principally traded, as certified by the Sponsor.

Amendment of the Trust Agreement. TheTrustee and the Sponsor may amend the TrustAgreement without the consent of Unitholders tocorrect any provision which may be defective or tomake other provisions that will not materially adverselyaffect Unitholders (as determined in good faith by theSponsor and the Trustee). The Trust Agreement maynot be amended to increase the number of Units orpermit acquisit ion of securit ies in addition to orsubstitution for the Securities (except as provided in theTrust Agreement). The Trustee will notify Unitholders ofany amendment.

Termination. Your Portfolio will terminate on theMandatory Termination Date specified under “EssentialInformation” or upon the sale or other disposition of thelast Security held in the Portfolio. Your Portfolio may beterminated at any time with consent of Unitholdersrepresenting two-thirds of the outstanding Units or bythe Trustee when the value of the Portfolio is less than$500,000 ($3,000,000 if the value of the Portfolio hasexceeded $15,000,000) (the “Minimum TerminationValue”). Your Portfolio will be liquidated by the Trusteein the event that a sufficient number of Units of thePortfolio not yet sold are tendered for redemption bythe Sponsor, so that the net worth of the Portfoliowould be reduced to less than 40% of the value of theSecurities at the time they were deposited in thePortfolio. If your Portfolio is liquidated because of theredemption of unsold Units by the Sponsor, theSponsor will refund to each purchaser of Units theentire sales charge paid by such purchaser. TheTrustee may begin to sell Securities in connection withthe Portfolio termination nine business days before,and no later than, the Mandatory Termination Date.Qualified Unitholders may elect an in kind distributionof Securities, provided that Unitholders may notrequest an in kind distribution of Securities within 30calendar days of the Portfolio’s termination. Any in kinddistribution of Securities will be made in the mannerand subject to the restrictions described under “Rightsof Unitholders--Redemption of Units”, provided that, inconnection with an in kind distribution election more

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than 30 calendar days prior to termination, Unitholderstendering 1,000 or more Units of the Portfolio (or suchhigher amount as may be required by your broker-dealer or sel l ing agent) may request an in kinddistribution of Securities equal to the Redemption Priceper Unit on the date of tender. Unitholders will receive afinal cash distribution within a reasonable time after theMandatory Termination Date. All distributions will be netof Portfolio expenses and costs. Unitholders willreceive a f inal distr ibut ion statement fol lowingtermination. The Information Supplement containsfurther information regarding termination of yourPortfolio. See “Additional Information”.

Limitations on Liabilities. The Sponsor,Supervisor and Trustee are under no liability for takingany action or for refraining from taking any action ingood faith pursuant to the Trust Agreement, or forerrors in judgment, but shall be liable only for their ownwillful misfeasance, bad faith or gross negligence(negl igence in the case of the Trustee) in theperformance of their duties or by reason of theirreckless disregard of their obligations and dutieshereunder. The Trustee is not liable for depreciation orloss incurred by reason of the sale by the Trustee of anyof the Securities. In the event of the failure of theSponsor to act under the Trust Agreement, the Trusteemay act thereunder and is not liable for any action takenby it in good faith under the Trust Agreement. TheTrustee is not liable for any taxes or other governmentalcharges imposed on the Securities, on it as Trusteeunder the Trust Agreement or on the Portfolio which theTrustee may be required to pay under any present orfuture law of the United States of America or of anyother taxing authority having jurisdiction. In addition, theTrust Agreement contains other customary provisionslimiting the liability of the Trustee. The Sponsor andSupervisor may rely on any evaluation furnished by theTrustee and have no responsibility for the accuracythereof. Determinations by the Trustee shall be made ingood faith upon the basis of the best informationavailable to it.

Sponsor. Invesco Capital Markets, Inc. is the Sponsorof your Portfolio. The Sponsor is a wholly ownedsubsidiary of Invesco Advisers, Inc. (“Invesco Advisers”).

Invesco Advisers is an indirect wholly owned subsidiaryof Invesco Ltd., a leading independent global investmentmanager that provides a wide range of investmentstrategies and vehicles to its retail, institutional and highnet worth clients around the globe. The Sponsor’sprincipal office is located at 11 Greenway Plaza, Houston,Texas 77046-1173. As of September 30, 2019, the totalstockholders’ equity of Invesco Capital Markets, Inc. was$94,146,402.00 (unaudited). The current assets undermanagement and supervision by Invesco Ltd. and itsaffiliates were valued at approximately $1,184.4 billion asof September 30, 2019.

The Sponsor and your Portfolio have adopted a codeof ethics requiring Invesco Ltd.’s employees who haveaccess to information on Portfolio transactions to reportpersonal securities transactions. The purpose of the codeis to avoid potential conflicts of interest and to preventfraud, deception or misconduct with respect to yourPortfolio. The Information Supplement contains additionalinformation about the Sponsor.

If the Sponsor shall fail to perform any of its dutiesunder the Trust Agreement or become incapable ofacting or shall become bankrupt or its affairs are takenover by public authorities, then the Trustee may(i ) appoint a successor Sponsor at rates ofcompensation deemed by the Trustee to be reasonableand not exceeding amounts prescribed by the SEC,(ii) terminate the Trust Agreement and liquidate thePortfolio as provided therein or (iii) continue to act asTrustee without terminating the Trust Agreement.

Trustee. The Trustee is The Bank of New YorkMellon, a trust company organized under the laws ofNew York. The Bank of New York Mellon has itsprincipal unit investment trust division offices at 2Hanson Place, 12th Floor, Brooklyn, New York 11217,(800) 856-8487. If you have questions regarding youraccount or your Portfolio, please contact the Trustee atits principal unit investment trust division offices or yourfinancial adviser. The Sponsor does not have access toindividual account information. The Bank of New YorkMellon is subject to supervision and examination by theSuperintendent of Banks of the State of New York andthe Board of Governors of the Federal Reserve System,and its deposits are insured by the Federal Deposit

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Insurance Corporation to the extent permitted by law.Additional information regarding the Trustee is set forthin the Information Supplement, including the Trustee’squalifications and duties, its ability to resign, the effectof a merger involving the Trustee and the Sponsor’sabi l i ty to remove and replace the Trustee. See“Additional Information”.

TAXATION

This section summarizes some of the principal U.S.federal income tax consequences of owning Units ofthe Portfolio. Tax laws and interpretations are subject tochange, possibly with retroactive effect. This summarydoes not describe all of the tax consequences to alltaxpayers. For example, this summary generally doesnot describe your situation if you are a corporation, anon-U.S. person, a broker/dealer, a tax-exempt entity,financial institution, person who marks to market theirUnits or other investor with special circumstances. Inaddition, this section does not describe your alternativeminimum, state, local or foreign tax consequences ofinvesting in the Portfolio.

This federal income tax summary is based in part onthe advice of counsel to the Sponsor. The InternalRevenue Service could disagree with any conclusionsset forth in this section. In addition, our counsel was notasked to review the federal income tax treatment of theassets to be deposited in your Portfolio.

Additional information related to taxes is contained inthe Information Supplement. As with any investment,you should seek advice based on your individualcircumstances from your own tax advisor.

Portfolio Status. Your Portfolio intends to electand to qualify annually as a “regulated investmentcompany” (“RIC”) under the federal tax laws. If yourPortfolio qualifies under the tax law as a RIC anddistributes its income in the manner and amountsrequired by the RIC tax requirements, the Portfoliogenerally will not pay federal income taxes. But there isno assurance that the distributions made by yourPortfolio will eliminate all taxes for every year at the levelof your Portfolio.

Distributions. Portfolio distributions are generallytaxable. After the end of each year, you will receive a taxstatement reporting your Portfolio's distributions,including the amounts of ordinary income distributionsand capital gains dividends. Your Portfolio may maketaxable distributions to you even in periods duringwhich the value of your Units has declined. Ordinaryincome distributions are generally taxed at your federaltax rate for ordinary income, however, as furtherdiscussed below, certain ordinary income distributionsreceived from your Portfolio may be taxed, undercurrent federal law, at capital gains tax rates. Certainordinary income dividends on Units that are attributableto qualifying dividends received by your Portfolio fromcertain corporations may be reported by the Portfolio asbeing eligible for the dividends received deduction forcorporate Unitholders provided certain holding periodrequirements are met. Income from the Portfolio andgains on the sale of your Units may also be subject to a3.8% federal tax imposed on net investment income ifyour adjusted gross income exceeds certain thresholdamounts, which currently are $250,000 in the case ofmarried couples filing joint returns and $200,000 in thecase of single individuals. In addition, your Portfolio maymake distributions that represent a return of capital fortax purposes to the extent of the Unitholder's basis inthe Units, and any additional amounts in excess ofbasis would be taxed as a capital gain. Generally, youwill treat all capital gains dividends as long-term capitalgains regardless of how long you have owned yourUnits. The tax status of your distributions from yourPortfolio is not affected by whether you reinvest yourdistributions in additional Units or receive them in cash.The income from your Portfolio that you must take intoaccount for federal income tax purposes is not reducedby amounts used to pay a deferred sales charge, if any.The tax laws may require you to treat certaindistributions made to you in January as if you hadreceived them on December 31 of the previous year.

A distribution paid by your Portfolio reduces thePortfolio's net asset value per Unit on the date paid bythe amount of the distribution. Accordingly, a distributionpaid shortly after a purchase of Units by a Unitholder

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would represent, in substance, a partial return of capital,however, it would be subject to income taxes.

Sale or Redemption of Units. If you sell orredeem your Units, you will generally recognize ataxable gain or loss. To determine the amount of thisgain or loss, you must subtract your adjusted tax basisin your Units from the amount you receive for the sale ofthe Units. Your initial tax basis in your Units is generallyequal to the cost of your Units, generally including salescharges. In some cases, however, you may have toadjust your tax basis after you purchase your Units.

Capital Gains and Losses and CertainOrdinary Income Dividends. Net capital gain equalsnet long-term capital gain minus net short-term capitalloss for the taxable year. Capital gain or loss is long-term if the holding period for the asset is more than oneyear and is short-term if the holding period for the assetis one year or less. You must exclude the date youpurchase your Units to determine your holding period.However, if you receive a capital gain dividend from yourPortfolio and sell your Units at a loss after holding it forsix months or less, the loss will be recharacterized aslong-term capital loss to the extent of the capital gaindividend received. The tax rates for capital gainsrealized from assets held for one year or less aregenerally the same as for ordinary income.

In certain circumstances, ordinary income dividendsreceived by an individual Unitholder from a RIC such asyour Portfolio may be taxed at the same federal ratesthat apply to net capital gain (as discussed above),provided certain holding period requirements aresatisfied and provided the dividends are attributable toqualified dividend income received by the Portfolio itself.Qualified dividend income means dividends paid to thePortfolio (a) by domestic corporations, (b) by foreigncorporations that are either ( i ) incorporated in apossession of the United States or (ii) are eligible forbenefits under certain income tax treaties with theUnited States that include an exchange of informationprogram, or (c) with respect to stock of a foreigncorporation that is readily tradeable on an establishedsecurities market in the United States. Both thePortfolio and the Unitholder must meet certain holdingperiod requirements to qualify Portfolio dividends for

this treatment. Income derived from investments inderivatives, fixed-income securities, U.S. real estateinvestment trusts, passive foreign investmentcompanies, and income received “in lieu of” dividendsin a securities lending transactions generally is noteligible for treatment as qualified dividend income. If thequalified dividend income received by the Portfolio isequal to 95% (or a greater percentage) of the Portfolio'sgross income (exclusive of net capital gain) in anytaxable year, all of the ordinary income dividends paidby the Portfolio will be qualified dividend income. YourPortfolio will provide notice to its Unitholders of theamount of any distribution which may be taken intoaccount as qualified dividend income which is eligiblefor capital gains tax rates. There is no requirement thattax consequences be taken into account inadministering your Portfolio.

In Kind Distributions. Under certain circumstances,as described in this prospectus, you may receive an inkind distribution of Portfolio securities when you redeemyour Units. In general, this distribution will be treated as asale for federal income tax purposes and you willrecognize gain or loss, based on the value at that time ofthe securities and the amount of cash received, andsubject to certain limitations on the deductibility of lossesunder the tax law.

Rollovers and Exchanges. If you elect to haveyour proceeds from your Portfolio rolled over into afuture trust, it would generally be considered a sale forfederal income tax purposes and any gain on the salewill be treated as a capital gain, and, in general, anyloss will be treated as a capital loss. However, any lossrealized on a sale or exchange will be disallowed to theextent that Units disposed of are replaced (includingthrough reinvestment of dividends) within a period of 61days beginning 30 days before and ending 30 daysafter disposition of Units or to the extent that theUnitholder, during such period, acquires or enters intoan option or contract to acquire, substantially identicalstock or securities. In such a case, the basis of theUnits acquired will be adjusted to reflect the disallowedloss. The deductibility of capital losses is subject toother limitations in the tax law.

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Deductibility of Portfolio Expenses. Expensesincurred and deducted by your Portfolio will generallynot be treated as taxable income to you. In certaincases if your Portfolio is not considered “publiclyoffered” under the Code, each U.S. Unitholder that iseither an individual, trust or estate will be treated ashaving received a taxable distribution from the Portfolioin the amount of that U.S. Unitholder's allocable shareof certain of the Portfolio's expenses for the calendaryear, and these fees and expenses will be treated asmiscellaneous itemized deductions of those U.S.Unitholders. The deductibility of expenses that arecharacterized as miscellaneous itemized deductions,which include investment expenses, is suspended fortax years beginning prior to January 1, 2026.

Foreign Investors. If you are a foreign investor (i.e.,an investor other than a U.S. citizen or resident or aU.S. corporation, partnership, estate or trust), generally,subject to applicable tax treaties, distributions to youfrom your Portfolio will be characterized as dividends forfederal income tax purposes (other than dividends thatyour Portfolio reports as capital gain dividends) and willbe subject to U.S. income taxes, including withholdingtaxes, subject to certain exceptions described below.You may be eligible under certain income tax treaties fora reduction in withholding rates. However, distributionsreceived by a foreign investor from your Portfolio thatare properly reported by the trust as capital gaindividends, interest-related dividends paid by thePortfolio from its qualified net interest income from U.S.sources and short-term capital gain dividends, may notbe subject to U.S. federal income taxes, includingwithholding taxes, provided that your Portfolio makescertain elections and certain other conditions are met.

The Foreign Account Tax Compliance Act(“FATCA”). A 30% withholding tax on your Portfolio'sdistributions generally applies if paid to a foreign entityunless: (i) if the foreign entity is a “foreign financialinstitution” as defined under FATCA, the foreign entityundertakes certain due diligence, reporting, withholding,and certification obligations, (ii) if the foreign entity is nota “foreign financial institution,” it identifies certain of itsU.S. investors or (iii) the foreign entity is otherwiseexcepted under FATCA. If required under the rules

above and subject to the appl icabi l i ty of anyintergovernmental agreements between the UnitedStates and the relevant foreign country, withholdingunder FATCA may apply. Under existing regulations,FATCA withholding on gross proceeds from the sale ofUnits and capital gain distributions from your Portfoliotook effect on January 1, 2019; however, recentlyproposed U.S. tax regulat ions el iminate FATCAwithholding on such types of payments. Taxpayersgeneral ly may rely on these proposed TreasuryRegulations until final Treasury Regulations are issued. Ifwithholding is required under FATCA on a paymentrelated to your Units, investors that otherwise would notbe subject to withholding (or that otherwise would beentitled to a reduced rate of withholding) on suchpayment generally will be required to seek a refund orcredit from the IRS to obtain the benefit of suchexemption or reduction. Your Portfolio will not pay anyadditional amounts in respect of amounts withheldunder FATCA. You should consult your tax advisorregarding the effect of FATCA based on your individualcircumstances.

Foreign Tax Credit. If your Portfolio invests in anyforeign securities, the tax statement that you receivemay include an item showing foreign taxes yourPortfolio paid to other countries. In this case, dividendstaxed to you will include your share of the taxes yourPortfolio paid to other countries. If more than 50% ofthe value of the Portfolio's total assets at the end of afiscal year is invested in foreign securities, the Portfoliomay elect to “pass-through” to the Unitholders theamount of foreign income tax paid by the Portfolio inlieu of deducting such amount in determining itsinvestment company taxable income. In such a case,Unitholders will be required (i) to include in grossincome, even though not actually received, theirrespective pro rata shares of the foreign income taxpaid by the Portfolio that are attributable to anydistributions they receive; and (ii) either to deduct theirpro rata share of foreign tax in computing their taxableincome or to use it (subject to various limitations) as aforeign tax credit against federal income tax (but notboth). No deduction for foreign tax may be claimed by anon-corporate Unitholder who does not itemize

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deductions or who is subject to the alternative minimumtax. Unitholders may be unable to claim a credit for thefull amount of their proportionate shares of the foreignincome tax paid by the Portfol io due to certainlimitations that may apply. The Portfolio reserves theright not to pass-through to its Unitholders the amountof foreign income taxes paid by the Portfolio.

Backup Withholding. By law, your Portfolio mustwithhold as backup withholding a percentage (currently24%) of your taxable distributions and redemptionproceeds if you do not provide your correct socialsecurity or taxpayer identification number and certifythat you are not subject to backup withholding, or if theIRS instructs your Portfolio to do so.

Investors should consult their advisors concerningthe federal, state, local and foreign tax consequences ofinvesting in the Portfolio.

PORTFOLIO OPERATING EXPENSES

General. The fees and expenses of your Portfoliowill generally accrue on a daily basis. Portfolio operatingfees and expenses are generally paid out of the IncomeAccount to the extent funds are available, and then fromthe Capital Account. The deferred sales charge,creation and development fee and organization costsare generally paid out of the Capital Account of yourPortfolio. It is expected that Securities will be sold topay these amounts which will result in capital gains orlosses to Unitholders. See “Taxation”. These sales willreduce future income distributions. The Sponsor’s,Supervisor’s and Trustee’s fees may be increasedwithout approval of the Unitholders by amounts notexceeding proportionate increases under the category“Services Less Rent of Shelter” in the Consumer PriceIndex for All Urban Consumers or, if this category is notpublished, in a comparable category.

Organization Costs. You and the otherUnitholders will bear all or a portion of the organizationcosts and charges incurred in connection with theestablishment of your Portfolio. These costs andcharges will include the cost of the preparation, printingand execution of the trust agreement, registrationstatement and other documents relating to your

Portfolio, fees paid to any Portfolio Consultant forassisting the Sponsor in the selection of securities,federal and state registration fees and costs, the initialfees and expenses of the Trustee, and legal andauditing expenses. The Public Offering Price of Unitsincludes the estimated amount of these costs. TheTrustee will deduct these expenses from your Portfolio’sassets at the end of the initial offering period.

Creation and Development Fee. The Sponsorwill receive a fee from your Portfolio for creating anddeveloping the Portfolio, including determining thePortfolio’s objectives, policies, composition and size,selecting service providers and information services andfor providing other similar administrative and ministerialfunctions. The creation and development fee is a chargeof $0.05 per Unit. The Trustee will deduct this amountfrom your Portfolio’s assets as of the close of the initialoffering period. No portion of this fee is applied to thepayment of distribution expenses or as compensationfor sales efforts. This fee will not be deducted fromproceeds received upon a repurchase, redemption orexchange of Units before the close of the initial publicoffering period.

Trustee’s Fee. For its services the Trustee willreceive the fee from your Portfolio set forth in the “FeeTable” (which includes the estimated amount ofmiscellaneous Portfolio expenses). The Trustee benefitsto the extent there are funds in the Capital and IncomeAccounts since these Accounts are non-interest bearingto Unitholders and the amounts earned by the Trusteeare retained by the Trustee. Part of the Trustee’scompensation for its services to your Portfolio isexpected to result from the use of these funds.

Compensation of Sponsor and Supervisor.The Sponsor and the Supervisor, which is an affiliate ofthe Sponsor, will receive the annual fees for providingbookkeeping and administrative services and portfoliosupervisory services set forth in the “Fee Table”. Thesefees may exceed the actual costs of providing theseservices to your Portfolio but at no time will the totalamount received for these services rendered to allInvesco unit investment trusts in any calendar yearexceed the aggregate cost of providing these servicesin that year.

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Miscellaneous Expenses. The following additionalcharges are or may be incurred by your Portfolio:(a) normal expenses (including the cost of mailingreports to Unitholders) incurred in connection with theoperation of the Portfolio, (b) fees of the Trustee forextraordinary services, (c) expenses of the Trustee(including legal and auditing expenses) and of counseldesignated by the Sponsor, (d) various governmentalcharges, (e) expenses and costs of any action taken bythe Trustee to protect the Portfolio and the rights andinterests of Unitholders, (f) indemnification of the Trusteefor any loss, l iabil ity or expenses incurred in theadministration of the Portfolio without negligence, badfaith or wilful misconduct on its part, (g) foreign custodialand transaction fees (which may include compensationpaid to the Trustee or its subsidiaries or affiliates),(h) costs associated with liquidating the securities heldin the Portfolio, (i) any offering costs incurred after theend of the initial offering period and (j) expendituresincurred in contacting Unitholders upon termination ofthe Portfolio. The Portfolio may pay the expenses ofupdating its registration statement each year. TheInsider Buy Strategy will pay a license fee to thePortfolio Consultant for the use of certain service marksand other intellectual property.

OTHER MATTERS

Legal Opinions. The legality of the Units offeredhereby has been passed upon by Morgan, Lewis &Bockius LLP. Dorsey & Whitney LLP has acted ascounsel to the Trustee.

Independent Registered Public AccountingFirm. The statements of condition and the relatedportfolios included in this prospectus have beenaudited by Grant Thornton LLP, independentregistered public accounting firm, as set forth in theirreport in this prospectus, and are included herein inreliance upon the authority of said firm as experts inaccounting and auditing.

ADDITIONAL INFORMATION

This prospectus does not contain all the informationset forth in the registration statements filed by your

Portfolio with the SEC under the Securities Act of1933 and the Investment Company Act of 1940 (fileno. 811-02754). The Information Supplement, whichhas been filed with the SEC and is incorporated hereinby reference, includes more detailed informationconcerning the Securit ies, investment risks andgeneral information about the Portfolio. Reports andother information about your Portfolio are available onthe EDGAR Database on the SEC’s Internet site athttp://www.sec.gov. Copies of this information may beobtained, after paying a duplication fee, by electronicrequest at the fo l lowing e-mai l address:publicinfo@sec.gov or by writing the SEC’s PublicReference Section, Washington, DC 20549-0102.

TABLE OF CONTENTS

Title Page

Insider Buy Strategy........................................... 2Notes to Portfolio............................................... 5Report of Independent Registered

Public Accounting Firm .................................. 6Statement of Condition ..................................... 7The Portfolio ...................................................... A-1Objectives and Securities Selection ................... A-2Risk Factors ...................................................... A-2Public Offering ................................................... A-5Retirement Accounts ......................................... A-9Fee Accounts .................................................... A-9Rights of Unitholders ......................................... A-10Portfolio Administration...................................... A-13Taxation ............................................................. A-16Portfolio Operating Expenses............................. A-19Other Matters .................................................... A-20Additional Information ........................................ A-20

______________When Units of the Portfolio are no longer available thisprospectus may be used as a preliminary prospectus for afuture Portfolio. If this prospectus is used for future Portfoliosyou should note the following:

The information in this prospectus is not complete with respectto future Portfolio series and may be changed. No person maysell Units of future Portfolios until a registration statement isfiled with the Securities and Exchange Commission and iseffective. This prospectus is not an offer to sell Units and is notsoliciting an offer to buy Units in any state where the offer orsale is not permitted.

U-EMSPRO2012

PROSPECTUS

November 7, 2019

Insider Buy Strategy 2019-4

Please retain this prospectus for future reference.

INVESCO