Invesco Unit Trusts High Income Investment Grade Trust, Series 6 A taxable fixed income unit trust Trust specifics Series information (As of the close of business on the deposit date) Public offering price per unit $1,156.02 Par value per unit* $1,000.00 Average weighted maturity 6 years Minimum credit rating of underlying securities† BBB-/Baa3 Sales charge 3.00% Payment Monthly Estimated current return1 Estimated long-term return1 Initial interest distribution per unit Subsequent interest distributions per unit2 Estimated net annual income per unit 4.69% 2.88% $2.11 $4.52 $54.26 * Represents the principal amount of the underlying bonds per unit as of the close of business on the trust’s deposit date. Subsequently, bonds may be sold to meet redemptions, to pay expenses, and in other limited circumstances. The sale of bonds will affect the principal amount of bonds included in the trust and as a result the principal amount of bonds per unit. There can be no assurance that a unitholder will receive this par value per unit subsequent to the deposit date. † Reflects the minimum credit quality of underlying securities in the portfolio as rated by S&P and Moody’s, when available. Not all bonds are rated by both services. Although the bonds in the portfolio are rated at or above the minimum credit quality as of deposit date, each bond’s rating may change after its inclusion in the trust. Monthly CUSIP Wrap CUSIP Symbol NASDAQ Symbol Deposit date Distribution date monthly 429679-20-2 429679-21-0 HIGT6 IHNGRX 08/21/14 25th of each month beginning 09/25/14 10th of each month beginning 09/10/14 Record date monthly Breakpoint information Transaction amount Sales Charges Less than $100,000 $100,000 - $249,999 $250,000 - $499,999 $500,000 - $999,999 $1,000,000 - $2,999,999 $3,000,000 - $4,999,999 $5,000,000 or more Wrap fee 3.00% 2.60 2.40 2.20 2.00 1.70 1.50 0.65 Est. Current Return1 4.69% 4.71 4.72 4.73 4.74 4.76 4.77 4.81 Est. Long-Term Return1 2.88% 2.96 2.99 3.03 3.06 3.12 3.15 3.31 1 These estimates are calculated as of the close of business on the deposit date and will vary thereafter. Estimated current return shows the estimated interest distributions you are scheduled to receive each year divided by the unit price. Estimated long term return shows the estimated return over the estimated life of the trust. We base this estimate on an average of the bond yields over their estimated life. This estimate also reflects the sales charge and estimated expenses. The average yield for the portfolio is derived by weighting each bond’s yield by its value and estimated life. Unlike estimated current return, estimated long term return accounts for maturities, discounts and premiums of the bonds. These estimates show a comparison rather than a prediction of returns. No return calculation can predict your actual return. Your actual return may vary from these estimates. Current estimates are available at www.invesco.com/unittrust. Objective The trust seeks to provide a high level of current income and to preserve capital. The trust invests in a portfolio of intermediate-term taxable bonds. Portfolio diversification (% of par value) 94 As of the opening of business on the deposit date Corporate Bonds 100% Materials 23% Consumer Discretionary 21% Financials 21% Information Technology 14% Energy 9% Health Care 4% Telecommunication Services 4% Industrials 4% Invesco helped pioneer the tax-exempt unit trust in 1976. Since then, we have consistently offered fixed income trusts and now boast a large family of tax-exempt and taxable income trusts. Over 5,173 fixed income unit trusts have deposited—with over $44.5 billion in initial deposits as of April 30, 2014. Why consider the High Income Investment Grade Trust (HIGT)? Take advantage of a portfolio of taxable bonds through a convenient and efficient way of purchasing a professionally selected and diversified portfolio of investment grade bonds.3 • Investment grade corporates with shorter maturities may help reduce interest rate risk for investors as well as add diversification benefits. • Professional selection and analysis performed by a team of experienced financial professionals. • Trust provides daily liquidity, pricing with stated par-value and the potential for monthly income. • Timely for investors looking for potential additional income in this low interest rate environment while managing duration risk. 2 The amount is based on estimated cash flows per Unit and that the amount will vary with changes in expenses, interest rates and maturity, call or sale of bonds. 3 The bonds in the portfolio are generally rated BBB- or higher by Standard & Poor’s or Baa3 or higher by Moody’s as of the deposit date. Diversification does not guarantee a profit or eliminate the risk of loss. Portfolio holdings Securities (% of par value as of the opening of business on the deposit date) Credit Ratings S&P Moody’s Interest Rate (%) Maturity Redemption Feature Corporate bonds 100% AutoNation, Inc. BBB- Baa3 5.50% 02/01/2020 — — Advance Auto Parts, Inc. BBB- Baa3 5.75% 05/01/2020 — — Expedia, Inc. BBB- Ba1 5.95% 08/15/2020 — — Wyndham Worldwide Corporation BBB- Baa3 5.625% 03/01/2021 — — Tupperware Brands Corporation BBB- Baa3 4.75% 06/01/2021 2021 @ 100 — Petrobras International Finance Company BBB- Baa1 5.375% 01/27/2021 — — Barclays Bank plc BBB Baa3 5.14% 10/14/2020 — — Digital Realty Trust L.P. BBB Baa2 5.25% 03/15/2021 2020 @ 100 — Jefferies Group LLC BBB Baa3 6.875% 04/15/2021 — — Hanover Insurance Group BBB- Baa3 6.375% 06/15/2021 — — Senior Housing Property Trust BBB- Baa3 6.75% 12/15/2021 2021 @ 100 — Hospira, Inc. BBB- Ba1 5.20% 08/12/2020 — — Masco Corporation BBB- Ba3 7.125% 03/15/2020 — — Western Union Company BBB Baa2 5.253% 04/01/2020 — — Jabil Circuit, Inc. BBB- Ba1 5.625% 12/15/2020 — — Alcoa, Inc. BBB- Ba1 6.15% 08/15/2020 — — Allegheny Technologies, Inc. BBB- Baa3 5.95% 01/15/2021 2020 @ 100 — Alcoa, Inc. BBB- Ba1 5.40% 04/15/2021 2021 @ 100 — Barrick North America Finance LLC BBB Baa2 4.40% 05/30/2021 — — Qwest Corporation BBB- Baa3 6.75% 12/01/2021 — — The trust portfolio is provided for informational purposes only and should not be deemed as a recommendation to buy or sell the individual securities shown above. Invesco’s history of offering unit investment trusts began with the acquisition of the sponsor by Invesco Ltd. in June 2010. Invesco unit investment trusts are distributed by the sponsor, Invesco Capital Markets, Inc. and broker dealers including Invesco Distributors, Inc. Both firms are wholly owned, indirect subsidiaries of Invesco Ltd. Explore Intentional Investing with Invesco® FOR US USE ONLY Risk considerations There is no assurance that a unit investment trust will achieve its investment objective. An investment in this unit trust is subject to market risk, which is the possibility that the market values of securities owned by the trust will decline and that the value of trust units may therefore be less than what you paid for them. This trust is unmanaged. Accordingly, you can lose money investing in this trust. An investment in a trust should be made with the understanding of the risks associated therewith, such as the inability of the issuer or an insurer to pay the principal of or interest on a bond when due, volatile interest rates, early call provisions and changes to the tax status of the bonds. Investments in a trust may be subject to interest rate risk. If interest rates rise, the value of the bonds in a trust may decline and if interest rates decline the value of the bonds may increase. Also, the longer the period to maturity, the greater the sensitivity to interest rate changes tends to be. The financial markets, including those for corporate bonds, have recently experienced periods of extreme illiquidity and volatility. Due to these significant difficulties in the financial markets, there can be substantial uncertainty in assessing the value of an issuer’s assets or the extent of its obligations. For these or other reasons, the ratings of the bonds in the Trust’s portfolio may not accurately reflect the current financial condition or prospects of the issuer of the bond. Although the underlying securities in the portfolio are rated at or above the minimum credit quality as of the date of deposit, the ratings may change after inclusion in the trust. Invesco and its representatives do not provide tax advice. Individuals should consult their personal tax advisors before making any tax-related investment decisions. A credit rating is an assessment provided by a nationally recognized statistical rating organization (NRSRO) of the creditworthiness of an issuer with respect to debt obligations, including specific securities, money market instruments or other debts. Ratings are measured on a scale that generally ranges from AAA/ Aaa (highest) to D/C (lowest); ratings are subject to change without notice. For more information on Standard and Poor’s rating methodology, please visit www.standardandpoors.com and select ‘Understanding Ratings’ under Rating Resources on the homepage or Moody’s at www.moodys.com and select ‘Rating Methodologies’ under Research and Ratings on the homepage. Before investing, investors should carefully read the prospectus and consider the investment objectives, risks, charges and expenses. For this and more complete information about the trust, investors should ask their advisor(s) for a prospectus or download one at invesco.com/unittrust. High Income Investment Grade Trust, Series 6 invesco.com/us U-HIGT6-FCT-1 08/14 9793 Invesco Distributors, Inc.