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          CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS: This report of Kayne Anderson MLP Investment Company (“the Company”) contains “forward-looking statements” as defined under the U.S. federal securities laws. Generally, the words “believe,” “expect,” “intend,” “estimate,” “anticipate,” “project,” “will” and similar expressions identify forward-looking statements, which generally are not historical in nature. Forward-looking statements are subject to certain risks and uncertainties that could cause actual results to materially differ from the Company’s historical experience and its present expectations or projections indicated in any forward-looking statements. These risks include, but are not limited to, changes in economic and political conditions; regulatory and legal changes; master limited partnership industry risk; leverage risk; valuation risk; interest rate risk; tax risk; and other risks discussed in the Company’s filings with the Securities and Exchange Commission (“SEC”). You should not place undue reliance on forward-looking statements, which speak only as of the date they are made. The Company undertakes no obligation to update or revise any forward-looking statements made herein. There is no assurance that the Company’s investment objectives will be attained.

 


Table of Contents

KAYNE ANDERSON MLP INVESTMENT COMPANY
MANAGEMENT DISCUSSION
FOR THE QUARTER ENDED AUGUST 31, 2010
(UNAUDITED)
Overview
          Kayne Anderson MLP Investment Company is a non-diversified, closed-end fund formed in September 2004. Our investment objective is to obtain a high after-tax total return by investing at least 85% of our total assets in energy-related master limited partnerships and their affiliates (“MLPs”) and in other companies that operate assets used in the gathering, transporting, processing, storing, refining, distributing, mining or marketing of natural gas, natural gas liquids, crude oil, refined petroleum products or coal (collectively with MLPs, “Midstream Energy Companies”).
          As of August 31, 2010, we had total assets of $2.5 billion, net assets applicable to our common stock of $1.6 billion ($23.96 per share), and 67.4 million shares of common stock outstanding.
          Our investments are principally in equity securities issued by MLPs, but we may also invest in debt securities of MLPs and other Midstream Energy Companies. As of August 31, 2010, we held $2.4 billion in equity investments and $54.7 million in fixed income investments. Our top 10 largest holdings by issuer as of that date were:
                         
                    Percent of
    Type of   Amount   Total
Company (Sector)   Securities   ($ millions)   Investments
1. Magellan Midstream Partners, L.P. (Midstream MLP)
  Common Units   $ 179.0       7.2 %
2. Enterprise Products Partners L.P. (Midstream MLP)
  Common Units     178.2       7.2 %
3. Plains All American Pipeline, L.P. (Midstream MLP)
  Common Units     172.7       7.0 %
4. Kinder Morgan Management, LLC (MLP Affiliate)
  Common Units     166.3       6.7 %
5. MarkWest Energy Partners, L.P. (Midstream MLP)
  Common Units     128.5       5.2 %
6. Williams Partners L.P. (Midstream MLP)
  Common Units     114.8       4.6 %
7. Inergy, L.P. (Propane MLP)
  Common Units     108.4       4.4 %
8. Energy Transfer Equity, L.P. (General Partner MLP)
  Common Units     92.0       3.7 %
9. Copano Energy, L.L.C. (Midstream MLP)
  Common Units     88.2       3.5 %
10. Enbridge Energy Partners, L.P. (Midstream MLP)
  Common Units     84.2       3.4 %
Financial Results
          During the quarter ended August 31, 2010, our net asset value (“NAV”) per share increased from $21.90 to $23.96, and total assets increased from $2.1 billion to $2.5 billion. The increase in NAV was driven primarily by unrealized gains on our investments. The increase in total assets was a result of unrealized gains as well as increased investments from the proceeds of our common stock offering in August 2010. We provide a detailed calculation of net distributable income below under “Quarterly Distribution to Common Stockholders.”
Recent Events
          Credit Facility. On June 11, 2010, we entered into a new unsecured revolving credit facility with a syndicate of lenders with availability of $100 million. The credit facility has a three-year commitment terminating on June 11, 2013. Outstanding loan balances will accrue interest daily at a rate equal to the one-month LIBOR plus 1.75% based on current asset coverage ratios. The interest rate may vary between LIBOR plus 1.75% to LIBOR plus 3.00%, depending on our asset coverage ratios. We will pay a fee of 0.40% on any unused amounts of the credit facility.
          Private Placements. On June 10, 2010 and June 15, 2010, we completed two private placements of unregistered common stock to members of senior management of Magellan Midstream Partners, L.P. (“MMP”) and Inergy Holdings, L.P. (“NRGP”), respectively. The Company issued a total of 1.5 million shares at an average price of $23.90 per share. Simultaneous with the issuance of the Company’s common stock, the Company purchased $35

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KAYNE ANDERSON MLP INVESTMENT COMPANY
MANAGEMENT DISCUSSION
FOR THE QUARTER ENDED AUGUST 31, 2010
(UNAUDITED)
million of NRGP common units and $9.9 million of MMP common units owned by such members of senior management.
          Common Share Offering. On August 11, 2010, we completed a public offering of 7.3 million shares of common stock at a price of $26.30 per share (the offering price represented a 4% premium to our net asset value at such time). Net proceeds from the offering of $182.9 million were used to make additional portfolio investments. These new investments were consistent with our investment strategy and were predominately made in equity securities of midstream MLPs. On September 9, 2010, we issued 793,877 shares of common stock at a price of $26.30 per share as part of the over-allotment option in connection with the August offering.
Quarterly Distribution to Common Stockholders
          We pay quarterly distributions to our common stockholders, funded in part by net distributable income (“NDI”) generated from our portfolio investments. NDI is the amount of income received by us from our portfolio investments less operating expenses, subject to certain adjustments as described below. NDI is not a financial measure under the accounting principles generally accepted in the United States of America (“GAAP”). Refer to the “Reconciliation of NDI to GAAP” section below for a reconciliation of this measure to our results reported under GAAP.
          Income from portfolio investments includes (a) cash distributions paid by MLPs, (b) paid-in-kind dividends received from MLPs and MLP affiliates (in particular, the two MLP i-shares), (c) interest income from debt securities and (d) net premiums received from the sale of covered calls.
          Operating expenses include (a) management fees paid to our investment adviser, (b) other expenses (mostly attributable to fees paid to other service providers), (c) leverage costs, including interest expense and preferred stock distributions and (d) deferred income tax expense/benefit on net investment income/loss.

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KAYNE ANDERSON MLP INVESTMENT COMPANY
MANAGEMENT DISCUSSION
FOR THE QUARTER ENDED AUGUST 31, 2010
(UNAUDITED)
Net Distributable Income (NDI)
(amounts in millions, except for per share amounts)
         
    Three Months  
    Ended  
    August 31, 2010  
Distributions and Other Income from Investments
       
Dividends and Distributions
  $ 34.9  
Paid-In-Kind Dividends
    3.8  
Interest Income
    1.0  
Net Premiums Received from Call Options Written
    1.4  
 
     
Total Distributions and Other Income from Investments
    41.1  
Expenses
       
Investment Management Fee
    (7.8 )
Other Expenses
    (0.9 )
 
     
Total Management Fee and Other Expenses
    (8.7 )
Interest Expense and Payments on Interest Rate Swap Contracts
    (6.0 )
Preferred Stock Distributions
    (1.5 )
Income Tax Benefit
    3.7  
 
     
Net Distributable Income (NDI)
  $ 28.6  
 
     
Weighted Shares Outstanding
    61.5  
NDI per Weighted Share Outstanding
  $ 0.46  
 
     
          Payment of future distributions is subject to Board of Directors approval, as well as meeting the covenants of our debt agreements and terms of our preferred stock.
          In determining our quarterly distribution to common stockholders, our Board of Directors considers a number of factors which include but are not limited to:
  NDI generated in the current quarter;
 
  Expected NDI over the next twelve months; and
 
  Realized and unrealized gains generated by the portfolio.
          On September 21, 2010, we declared our quarterly distribution of $0.48 per common share for the period June 1, 2010 through August 31, 2010 for a total of $32.4 million. The distribution was paid on October 15, 2010 to stockholders of record on October 5, 2010. Net distributable income for the quarter was less than our quarterly distribution, in part because we were not able to invest all of the proceeds from the issuance of common stock and additional leverage before ex-dividend dates of our portfolio of MLPs.
Distributions and Other Income
          Total dividends, distributions and paid-in-kind dividends for the third quarter 2010 were $38.7 million representing a 6.5% increase from the second quarter 2010. The increase was primarily the result of distribution increases and additional investments made with a portion of the net proceeds from our common stock offering in August 2010. During this quarter, interest income of $1 million was in line with the second quarter, and net premiums received from call options written were $1.4 million, which was an increase of $0.4 million from the second quarter. Market conditions during the third quarter enabled us to generate the additional net premiums.

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KAYNE ANDERSON MLP INVESTMENT COMPANY
MANAGEMENT DISCUSSION
FOR THE QUARTER ENDED AUGUST 31, 2010
(UNAUDITED)
Expenses
          Our largest expenses are investment management fees and leverage costs. Management fees are calculated based on the average total assets under management. For the third quarter 2010, management fees were $7.8 million, compared to $6.9 million for the second quarter 2010. Increased management fees were driven by increases in our total assets due to appreciation and additional investments made with the proceeds from our recent equity offering.
          Interest expense (excluding non-cash amortization of debt issuance costs of $0.3 million) for the third quarter 2010 was $6.0 million, compared to $5.4 million (including payments of interest swaps of $0.1 million and excluding non-cash amortization of debt issuance costs of $0.3 million) for the second quarter 2010. Preferred stock distributions for the third quarter were $1.5 million (excluding non-cash amortization of 0.08 million).
          Other expenses of $0.9 million for the third quarter 2010 were in line with the $0.9 million for the second quarter 2010.
Reconciliation of NDI to GAAP
          The difference between distributions and other income from investments in the NDI calculation and total investment income as reported in our Statement of Operations is reconciled as follows:
    GAAP recognizes that a significant portion of the cash distributions received from MLPs is characterized as a return of capital and therefore excluded from investment income, whereas the NDI calculation includes the return of capital portion of such distributions.
 
    NDI includes the value of dividends paid-in-kind (i.e., stock dividends), whereas such amounts are not included as investment income for GAAP purposes during the period received, but rather are recorded as unrealized gains upon receipt.
 
    Many of our investments in debt securities were purchased at a discount or premium to the par value of such security. When making such investments, we consider the security’s yield to maturity which factors in the impact of such discount (or premium). Interest income reported under GAAP includes the non-cash accretion of the discount (or amortization of the premium) based on the effective interest method. When we calculate interest income for purposes of determining NDI, in order to better reflect the yield to maturity, the accretion of the discount (or amortization of the premium) is calculated on a straight-line basis over the remaining term of the debt security.
 
    We may sell covered call option contracts to generate income or to reduce our ownership of certain securities that we hold. In some cases, we are able to repurchase these call option contracts at a price less than the fee that we received, thereby generating a profit. The amount we received from selling call options, less the amount that we pay to repurchase such call option contracts is included in NDI. For GAAP purposes, “income” from call option contracts sold is not included in investment income. See Note 2 — Significant Accounting Policies for a full discussion of the GAAP treatment of option contracts.
          The treatment of expenses included in NDI also differs from what is reported in the Statement of Operations as follows:
    Expenses for purposes of calculating NDI include distributions paid to preferred stockholders.
 
    The non-cash amortization of capitalized debt issuance costs and preferred stock offering costs related to our financings is included in interest and amortization expense for GAAP purposes, but is excluded from our calculation of NDI. Further, write-offs of capitalized debt issuance costs and preferred stock offering

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KAYNE ANDERSON MLP INVESTMENT COMPANY
MANAGEMENT DISCUSSION
FOR THE QUARTER ENDED AUGUST 31, 2010
(UNAUDITED)
      costs are excluded from our calculation of NDI, but are included in interest and amortization expense for GAAP purposes.
    NDI also includes recurring payments (or receipts) on interest rate swap contracts (excluding termination payments) whereas for GAAP purposes, these amounts are included in the realized gains/losses section of the Statement of Operations.
Liquidity and Capital Resources
          Total leverage outstanding at August 31, 2010 of $590 million is comprised of $480 million in senior unsecured notes and $110 million in mandatory redeemable preferred stock. At August 31, 2010, we did not have any borrowings outstanding under our credit facility. Total leverage represented 24% of total assets at August 31, 2010, as compared to 29% of total assets at May 31, 2010.
          At August 31, 2010, our asset coverage ratios under the Investment Company Act of 1940, as amended (“the 1940 Act”), were 459% and 374% for debt and total leverage (debt plus preferred stock), respectively. We currently target an asset coverage ratio with respect to our debt of 375% but at times may be above or below our target depending on market conditions.
          At August 31, 2010, we had $480 million of senior unsecured notes outstanding with the following maturity dates: $75 million matures in 2011 (Series G); $60 million matures in 2012 (Series I); $125 million matures in 2013 (Series K); $110 million matures in 2014 (Series M and Series N); and $110 million matures in 2015 (Series O and Series P).
          On June 11, 2010, we entered into a new $100 million unsecured revolving credit facility with a syndicate of lenders. The facility has a three-year commitment terminating on June 11, 2013. With this new credit facility, we were able to increase the size by $20 million, extend the term from one year to three years, and reduce the interest rate by 0.5% based on current asset coverage ratios. A full copy of the credit facility is available on our website, www.kaynefunds.com.
          Our leverage consists of both fixed rate and floating rate obligations. At August 31, 2010, the weighted average interest rate on our leverage was 4.98%.

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KAYNE ANDERSON MLP INVESTMENT COMPANY
SCHEDULE OF INVESTMENTS
AUGUST 31, 2010
(amounts in 000’s, except number of option contracts)
(UNAUDITED)
                 
    No. of        
Description   Shares/Units     Value  
Long-Term Investments — 152.8%
               
Equity Investments(a) — 149.4%
               
Midstream MLP(b) — 102.0%
               
Boardwalk Pipeline Partners, LP
    587     $ 17,952  
Buckeye Partners, L.P.
    413       25,209  
Chesapeake Midstream Partners, L.P.(c)
    786       18,500  
Copano Energy, L.L.C.
    3,510       88,181  
Crosstex Energy, L.P.(d)
    2,633       31,591  
DCP Midstream Partners, LP
    1,281       40,677  
Duncan Energy Partners L.P.
    371       10,278  
Eagle Rock Energy Partners, L.P.
    677       4,063  
El Paso Pipeline Partners, L.P.
    1,479       46,322  
Enbridge Energy Partners, L.P.(e)
    1,566       84,165  
Energy Transfer Partners, L.P.
    1,823       83,310  
Enterprise Products Partners L.P.(e)
    4,821       178,221  
Exterran Partners, L.P.
    1,193       27,866  
Global Partners LP
    1,441       35,788  
Holly Energy Partners, L.P.
    770       38,489  
Magellan Midstream Partners, L.P.(e)
    3,462       167,768  
Magellan Midstream Partners, L.P. — Unregistered(h)
    238       11,224  
MarkWest Energy Partners, L.P.(e)
    3,858       128,542  
Martin Midstream Partners L.P.
    339       10,092  
Niska Gas Storage Partners LLC
    540       10,191  
ONEOK Partners, L.P.(e)
    1,122       77,219  
PAA Natural Gas Storage, L.P.(f)
    210       5,009  
Plains All American Pipeline, L.P.(f)
    2,876       172,698  
Quicksilver Gas Services LP
    949       22,031  
Regency Energy Partners LP
    3,506       83,377  
Spectra Energy Partners, LP
    294       9,462  
Sunoco Logistics Partners L.P.
    217       16,032  
Targa Resources Partners LP
    1,032       26,104  
TC PipeLines, LP
    189       8,225  
TransMontaigne Partners L.P.
    697       24,279  
Western Gas Partners, LP
    1,247       30,027  
Williams Partners L.P.
    2,898       114,787  
 
             
 
            1,647,679  
 
             
General Partner MLP — 17.3%
               
Alliance Holdings GP L.P.
    1,066       40,591  
Buckeye GP Holdings L.P.
    46       1,920  
Energy Transfer Equity, L.P.(e)
    2,648       92,019  
Enterprise GP Holdings L.P.
    1,318       63,728  
Inergy Holdings, L.P. — Unregistered(h)
    1,526       40,583  
Penn Virginia GP Holdings, L.P.
    2,024       39,624  
 
             
 
            278,465  
 
             
See accompanying notes to financial statements.

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KAYNE ANDERSON MLP INVESTMENT COMPANY
SCHEDULE OF INVESTMENTS
AUGUST 31, 2010
(amounts in 000’s, except number of option contracts)
(UNAUDITED)
                 
    No. of        
Description   Shares/Units     Value  
MLP Affiliates(b) — 13.6%
               
Enbridge Energy Management, L.L.C.(g)
    999     $ 53,003  
Kinder Morgan Management, LLC(g)
    2,816       166,330  
 
             
 
            219,333  
 
             
Shipping MLP — 7.4%
               
Capital Product Partners L.P.
    2,281       18,433  
Navios Maritime Partners L.P.
    1,685       29,168  
Teekay LNG Partners L.P.
    1,012       33,238  
Teekay Offshore Partners L.P.
    1,319       28,030  
Teekay Tankers Ltd.
    936       10,816  
 
             
 
            119,685  
 
             
Propane MLP — 6.7%
               
Inergy, L.P.
    2,910       108,360  
 
             
 
               
Coal MLP — 1.3%
               
Alliance Resource Partners, L.P.
    67       3,602  
Natural Resource Partners L.P.
    599       15,344  
Oxford Resource Partners, LP
    60       1,145  
Penn Virginia Resource Partners, L.P.
    59       1,314  
 
             
 
            21,405  
 
             
Upstream MLP — 1.1%
               
EV Energy Partners, L.P.
    221       7,430  
Legacy Reserves LP
    447       10,230  
 
             
 
            17,660  
 
             
 
               
Total Equity Investments (Cost — $1,650,673)
            2,412,587  
 
             
                                 
    Interest     Maturity     Principal          
    Rate     Date     Amount          
Energy Debt Investments — 3.4%
                               
Midstream MLP (b) — 1.6%
                               
Crosstex Energy, L.P.
    8.875 %     2/15/18     $ 15,000       15,487  
El Paso Corporation
    7.750       1/15/32       5,000       5,033  
Niska Gas Storage U.S., LLC
    8.875       3/15/18       5,000       5,263  
 
                             
 
                            25,783  
 
                             
Upstream MLP(b) — 1.2%
                               
Atlas Energy Resources, LLC
    12.125       8/1/17       9,000       10,339  
Atlas Energy Resources, LLC
    10.750       2/1/18       6,000       6,615  
Linn Energy, LLC
    8.625       4/15/20       2,000       2,110  
 
                             
 
                            19,064  
 
                             
See accompanying notes to financial statements.

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KAYNE ANDERSON MLP INVESTMENT COMPANY
SCHEDULE OF INVESTMENTS
AUGUST 31, 2010
(amounts in 000’s, except number of option contracts)
(UNAUDITED)
                                 
    Interest     Maturity     Principal        
Description   Rate     Date     Amount     Value  
Coal MLP — 0.6%
                               
Clearwater Natural Resources, LP(d)(h)(i)
    N/A       N/A       13,601     $ 4,760  
Penn Virginia Resource Partners, L.P.
    8.250 %     4/15/18       5,000       5,050  
 
                             
 
                            9,810  
 
                             
Total Energy Debt Investments (Cost — $60,139)
                            54,657  
 
                             
Total Long-Term Investments (Cost — $1,710,812)
                            2,467,244  
 
                             
 
                               
Short-Term Investment — 1.1%
                               
Repurchase Agreement — 1.1%
                               
J.P. Morgan Securities Inc. (Agreement dated 8/31/10 to be repurchased at $17,221), collateralized by $17,632 in U.S. Treasury bill (Cost — $17,221)
    0.140       9/1/10               17,221  
 
                             
                 
    No. of          
    Contracts          
Put Option Contracts Purchased(d) — 0.0%
               
Midstream MLP
               
Duncan Energy Partners L.P., put option expiring 9/18/10 @ $25.00 (Cost — $21)
    1,000       10  
 
             
 
               
Total Short-Term Investments (Cost — $17,242)
            17,231  
 
             
 
               
Total Investments — 153.9% (Cost — $1,728,054)
            2,484,475  
 
             
 
               
Liabilities
               
Call Option Contracts Written(d)
               
Midstream MLP
               
Enbridge Energy Partners, L.P., call option expiring 10/16/10 @ $55.00
    1,000       (105 )
Enterprise Products Partners L.P., call option expiring 9/18/10 @ $36.00
    1,800       (180 )
Enterprise Products Partners L.P., call option expiring 9/18/10 @ $37.00
    400       (25 )
Magellan Midstream Partners, L.P., call option expiring 9/18/10 @ $50.00
    200       (4 )
MarkWest Energy Partners, L.P., call option expiring 9/18/10 @ $34.00
    851       (43 )
MarkWest Energy Partners, L.P., call option expiring 9/18/10 @ $35.00
    850       (13 )
ONEOK Partners, L.P., call option expiring 9/18/10 @ $70.00
    300       (15 )
 
             
 
            (385 )
 
             
General Partner MLP
               
Energy Transfer Equity, L.P., call option expiring 9/18/10 @ $35.00
    100       (4 )
 
             
 
               
Total Call Option Contracts Written (Premiums Received — $533)
            (389 )
 
             
Senior Unsecured Notes
            (480,000 )
Mandatory Redeemable Preferred Stock at Redemption Value
            (110,000 )
Deferred Tax Liability
            (262,227 )
Other Liabilities
            (26,578 )
 
             
Total Liabilities
            (879,194 )
Other Assets
            9,427  
 
             
Total Liabilities in Excess of Other Assets
            (869,767 )
 
             
Net Assets Applicable to Common Stockholders
          $ 1,614,708  
 
             
See accompanying notes to financial statements.

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KAYNE ANDERSON MLP INVESTMENT COMPANY
SCHEDULE OF INVESTMENTS
AUGUST 31, 2010
(amounts in 000’s, except number of option contracts)
(UNAUDITED)
 
(a)   Unless otherwise noted, equity investments are common units/common shares.
 
(b)   Includes Limited Liability Companies.
 
(c)   Security is currently not paying cash distributions but is expected to pay cash distributions within the next 12 months.
 
(d)   Security is non-income producing.
 
(e)   Security or a portion thereof is segregated as collateral on option contracts written.
 
(f)   The Company believes that it is an affiliate of PAA Natural Gas Storage, L.P. and Plains All American, L.P. See Note 5 — Agreements and Affiliations.
 
(g)   Distributions are paid in-kind.
 
(h)   Fair valued securities, restricted from public sale. See Notes 2, 3 and 7.
 
(i)   Clearwater Natural Resources, LP is a privately-held MLP that the Company believes is a controlled affiliate. On January 12, 2010, Clearwater closed on the sale of all of its reserves and a substantial portion of its operating assets to International Resource Partners, L.P. (“IRP”). On March 16, 2010, the Bankruptcy Court confirmed Clearwater’s plan of reorganization (including such sale of assets to IRP). As part of Clearwater’s plan of reorganization, the Company will receive consideration for its unsecured term loan. Such consideration will be in the form of cash and a royalty interest in the reserves sold. Pursuant to the plan of reorganization, the Company will not receive any consideration for its equity investment in Clearwater or CNR GP Holdco, LLC. In addition to the unsecured term loan, the Company owns 3,889 common units, 34 warrants and 41 deferred participation units of Clearwater. The Company assigned no value to these equity investments as of August 31, 2010. CNR GP Holdco, LLC is the general partner of Clearwater. The Company owns 83.7% of CNR GP Holdco, LLC, which was assigned no value as of August 31, 2010, and believes it is a controlled affiliate. See Notes 3, 5 and 7.
See accompanying notes to financial statements.

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KAYNE ANDERSON MLP INVESTMENT COMPANY
STATEMENT OF ASSETS AND LIABILITIES
AUGUST 31, 2010
(amounts in 000’s, except share and per share amounts)
(UNAUDITED)
         
ASSETS
       
Investments at fair value:
       
Non-affiliated (Cost — $1,544,709)
  $ 2,284,777  
Affiliated (Cost — $78,470)
    177,707  
Controlled (Cost — $87,633)
    4,760  
Put option contracts purchased (Cost — $21)
    10  
Repurchase agreement (Cost — $17,221)
    17,221  
 
     
Total investments (Cost — $1,728,054)
    2,484,475  
Cash
    1,553  
Deposits with brokers
    278  
Receivable for securities sold
    744  
Interest, dividends and distributions receivable
    1,206  
Deferred debt issuance and preferred stock offering costs and other assets, net
    5,646  
 
     
Total Assets
    2,493,902  
 
     
 
       
LIABILITIES
       
Payable for securities purchased
    11,328  
Investment management fee payable
    7,822  
Accrued directors’ fees and expenses
    55  
Call option contracts written (Premiums received — $533)
    389  
Accrued expenses and other liabilities
    7,373  
Deferred tax liability
    262,227  
Senior Unsecured Notes
    480,000  
Mandatory Redeemable Preferred Stock, $25.00 liquidation value per share (4,400,000 shares issued and outstanding)
    110,000  
 
     
Total Liabilities
    879,194  
 
     
 
       
NET ASSETS APPLICABLE TO COMMON STOCKHOLDERS
  $ 1,614,708  
 
     
 
       
NET ASSETS APPLICABLE TO COMMON STOCKHOLDERS CONSIST OF
       
Common stock, $0.001 par value (67,397,010 shares issued and outstanding, 199,990,000 shares authorized)
  $ 67  
Paid-in capital
    1,208,353  
Accumulated net investment loss, net of income taxes, less dividends
    (163,101 )
Accumulated realized gains on investments and interest rate swap contracts, net of income taxes
    94,715  
Net unrealized gains on investments and options, net of income taxes
    474,674  
 
     
NET ASSETS APPLICABLE TO COMMON STOCKHOLDERS
  $ 1,614,708  
 
     
 
       
NET ASSET VALUE PER COMMON SHARE
  $ 23.96  
 
     
See accompanying notes to financial statements.

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KAYNE ANDERSON MLP INVESTMENT COMPANY
STATEMENT OF OPERATIONS
(amounts in 000’s)
(UNAUDITED)
                 
    For the Three     For the Nine  
    Months Ended     Months Ended  
    August 31, 2010     August 31, 2010  
INVESTMENT INCOME
               
Income
               
Dividends and distributions:
               
Non-affiliated investments
  $ 32,163     $ 90,842  
Affiliated investments
    2,756       8,113  
 
           
Total dividends and distributions
    34,919       98,955  
Return of capital
    (30,777 )     (87,328 )
 
           
Net dividends and distributions
    4,142       11,627  
Interest
    978       2,779  
 
           
Total Investment Income
    5,120       14,406  
 
           
 
               
Expenses
               
Investment management fees
    7,823       20,739  
Administration fees
    244       675  
Professional fees
    178       573  
Custodian fees
    72       196  
Reports to stockholders
    139       229  
Directors’ fees
    66       166  
Insurance
    46       137  
Other expenses
    150       552  
 
           
Total Expenses — Before Interest Expense, Preferred Distributions and Taxes
    8,718       23,267  
Interest expense and amortization of debt issuance costs
    6,313       17,262  
Distributions on mandatory redeemable preferred stock and amortization of offering costs
    1,588       2,029  
 
           
Total Expenses — Before Taxes
    16,619       42,558  
 
           
Net Investment Loss — Before Taxes
    (11,499 )     (28,152 )
Deferred tax benefit
    3,666       9,665  
 
           
Net Investment Loss
    (7,833 )     (18,487 )
 
           
 
               
REALIZED AND UNREALIZED GAINS/(LOSSES)
               
Net Realized Gains/(Losses)
               
Investments
    37,464       68,890  
Options
    580       969  
Payments on interest rate swap contracts
          (664 )
Deferred tax expense
    (14,076 )     (25,602 )
 
           
Net Realized Gains
    23,968       43,593  
 
           
Net Change in Unrealized Gains
               
Investments
    195,574       400,320  
Options
    486       1,014  
Interest rate swap contracts
          205  
Deferred tax expense
    (72,542 )     (148,569 )
 
           
Net Change in Unrealized Gains
    123,518       252,970  
 
           
Net Realized and Unrealized Gains
    147,486       296,563  
 
           
NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS
    139,653       278,076  
Distributions on Auction Rate Preferred Stock
          (177 )
 
           
NET INCREASE IN NET ASSETS APPLICABLE TO COMMON STOCKHOLDERS RESULTING FROM OPERATIONS
  $ 139,653     $ 277,899  
 
           
See accompanying notes to financial statements.

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KAYNE ANDERSON MLP INVESTMENT COMPANY
STATEMENT OF CHANGES IN NET ASSETS APPLICABLE TO COMMON STOCKHOLDERS
(amounts in 000’s, except share amounts)
                 
    For the Nine     For the Fiscal  
    Months Ended     Year Ended  
    August 31, 2010     November 30,  
    (Unaudited)     2009  
OPERATIONS
               
Net investment loss, net of tax(1)
  $ (18,487 )   $ (15,388 )
Net realized gains/(losses), net of tax
    43,593       (18,431 )
Net change in unrealized gains, net of tax
    252,970       369,027  
 
           
Net Increase in Net Assets Resulting from Operations
    278,076       335,208  
 
           
 
               
DIVIDENDS/DISTRIBUTIONS TO AUCTION RATE PREFERRED STOCKHOLDERS
               
Dividends
    (177 )(2)      
Distributions — return of capital
          (539 ) (3)
 
           
Dividends/Distributions to Preferred Stockholders
    (177 )     (539 )
 
           
 
               
DIVIDENDS/DISTRIBUTIONS TO COMMON STOCKHOLDERS
               
Dividends
    (24,929 )(2)      
Distributions — return of capital
    (56,462 )(2)     (89,586 ) (3)
 
           
Dividends/Distributions to Common Stockholders
    (81,391 )     (89,586 )
 
           
 
               
CAPITAL STOCK TRANSACTIONS
               
Proceeds from common stock offerings of 15,052,773 and 6,223,700 shares of common stock, respectively
    375,332       126,030  
Underwriting discounts and offering expenses associated with the issuance of common stock
    (14,076 )     (5,524 )
Issuance of 764,696 and 1,179,655 shares of common stock from reinvestment of distributions, respectively
    18,667       21,532  
 
           
Net Increase in Net Assets Applicable to Common Stockholders from Capital Stock Transactions
    379,923       142,038  
 
           
Total Increase in Net Assets Applicable to Common Stockholders
    576,431       387,121  
 
           
 
               
NET ASSETS ATTRIBUTABLE TO COMMON STOCKHOLDERS
               
Beginning of period
    1,038,277       651,156  
 
           
End of period
  $ 1,614,708     $ 1,038,277  
 
           
 
(1)   Distributions on the Company’s mandatory redeemable preferred stock are treated as an operating expense under GAAP and are included in the calculation of net investment loss. See Note 2— Significant Accounting Policies. As of August 31, 2010, the Company estimates that all of the distributions paid to mandatory redeemable preferred stockholders will be a dividend (ordinary income). This estimate is based on the Company’s operating results during the period. The actual characterization of the mandatory redeemable preferred stock distributions made during the period will not be determinable until after the end of the fiscal year when the Company can determine earnings and profits and, therefore, the characterization may differ from the preliminary estimates.
 
(2)   This is an estimate of the characterization of the distributions paid to auction rate preferred stockholders and common stockholders for the nine months ended August 31, 2010 as either a dividend (ordinary income) or distribution (return of capital). This estimate is based on the Company’s operating results during the period. The actual characterization of the auction rate preferred stock and common stock distributions made during the period will not be determinable until after the end of the fiscal year when the Company can determine earnings and profits and, therefore, the characterization may differ from the preliminary estimates.
 
(3)   All distributions paid to auction rate preferred stockholders and common stockholders for the fiscal year ended November 30, 2009 were characterized as distributions (return of capital). This characterization is based on the Company’s earnings and profits.
See accompanying notes to financial statements.

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KAYNE ANDERSON MLP INVESTMENT COMPANY
STATEMENT OF CASH FLOWS
FOR THE NINE MONTHS ENDED AUGUST 31, 2010
(amounts in 000’s)
(UNAUDITED)
         
CASH FLOWS FROM OPERATING ACTIVITIES
       
Net increase in net assets resulting from operations
  $ 278,076  
Adjustments to reconcile net increase in net assets resulting from operations to net cash used in operating activities:
       
Net deferred tax expense
    164,506  
Return of capital distributions
    87,328  
Net realized gains
    (69,195 )
Unrealized gains on investments, interest rate swap contracts and options written
    (401,539 )
Accretion of bond discount, net
    (75 )
Purchase of investments
    (757,677 )
Proceeds from sale of investments
    262,591  
Purchase of short-term investments, net
    (10,881 )
Increase in option contracts written, net
    16  
Decrease in deposits with brokers
    275  
Decrease in receivable for securities sold
    26  
Increase in interest, dividends and distributions receivable
    (312 )
Decrease in income tax receivable
    63  
Amortization of deferred debt issuance costs
    945  
Amortization of mandatory redeemable preferred stock issuance costs
    72  
Increase in other assets, net
    (102 )
Increase in payable for securities purchased
    5,800  
Increase in investment management fee payable
    2,842  
Increase in accrued directors’ fees and expenses
    12  
Decrease in accrued expenses and other liabilities
    (899 )
 
     
Net Cash Used in Operating Activities
    (438,128 )
 
     
CASH FLOWS FROM FINANCING ACTIVITIES
       
Issuance of shares of common stock, net of offering costs
    361,256  
Proceeds from issuance of senior unsecured notes
    110,000  
Proceeds from issuance on mandatory redeemable preferred stock
    110,000  
Redemption of auction rate preferred stock
    (75,000 )
Offering costs associated with the mandatory redeemable preferred stock
    (1,576 )
Offering costs associated with revolving credit facility
    (1,183 )
Offering costs associated with issuance of senior unsecured notes
    (915 )
Cash distributions paid to preferred stockholders
    (177 )
Cash distributions paid to common stockholders
    (62,724 )
 
     
Net Cash Provided by Financing Activities
    439,681  
 
     
NET INCREASE IN CASH
    1,553  
CASH — BEGINNING OF PERIOD
     
 
     
CASH — END OF PERIOD
  $ 1,553  
 
     
 
Supplemental disclosure of cash flow information:
Non-cash financing activities not included herein consist of reinvestment of distributions of $18,667 pursuant to the Company’s dividend reinvestment plan. During the nine months ended August 31, 2010, the Company received federal and state income tax refunds of $60 and interest paid was $19,333.
See accompanying notes to financial statements.

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KAYNE ANDERSON MLP INVESTMENT COMPANY
FINANCIAL HIGHLIGHTS
(amounts in 000’s, except share and per share amounts)
                                                         
                                                    For the Period  
    For the Nine                                             September 28,  
    Months Ended                                             2004(1)  
    August 31,                                             through  
    2010     For the Fiscal Year Ended November 30,     November 30,  
    (Unaudited)     2009     2008     2007     2006     2005     2004  
Per Share of Common Stock(2)
                                                       
Net asset value, beginning of period
  $ 20.13     $ 14.74     $ 30.08     $ 28.99     $ 25.07     $ 23.91     $ 23.70 (3)
 
                                                       
Net investment income/(loss)
    (0.32 )     (0.33 )     (0.73 )     (0.73 )     (0.62 )     (0.17 )     0.02  
Net realized and unrealized gain/(loss)
    5.42       7.50       (12.56 )     3.58       6.39       2.80       0.19  
 
                                         
Total income/(loss) from operations
    5.10       7.17       (13.29 )     2.85       5.77       2.63       0.21  
 
                                         
 
                                                       
Auction Rate Preferred Dividends (4)
                      (0.10 )           (0.05 )      
Auction Rate Preferred Distributions —return of capital (4)
          (0.01 )     (0.10 )           (0.10 )            
 
                                         
Total dividends and distributions — Auction Rate Preferred
          (0.01 )     (0.10 )     (0.10 )     (0.10 )     (0.05 )      
 
                                         
 
                                                       
Common Dividends (4)
    (0.43 )                 (0.09 )           (0.13 )      
Common Distributions — return of capital (4)
    (1.01 )     (1.94 )     (1.99 )     (1.84 )     (1.75 )     (1.37 )      
 
                                         
Total dividends and distributions — Common
    (1.44 )     (1.94 )     (1.99 )     (1.93 )     (1.75 )     (1.50 )      
 
                                         
 
                                                       
Underwriting discounts and offering costs on the issuance of auction rate preferred stock
                                  (0.03 )      
Anti-dilutive effect due to issuance of common stock
    0.15       0.12             0.26             0.11        
Anti-dilutive effect due to shares issued in reinvestment of dividends
    0.02       0.05       0.04       0.01                    
 
                                         
Total capital stock transactions
    0.17       0.17       0.04       0.27             0.08        
 
                                         
Net asset value, end of period
  $ 23.96     $ 20.13     $ 14.74     $ 30.08     $ 28.99     $ 25.07     $ 23.91  
 
                                         
Market value per share of common stock, end of period
  $ 25.54     $ 24.43     $ 13.37     $ 28.27     $ 31.39     $ 24.33     $ 24.90  
 
                                         
Total investment return based on common stock market value(5)
    10.9 % (6)     103.0 %     (48.8 )%     (4.4 )%     37.9 %     3.7 %     (0.4 )% (6)
 
                                                       
Supplemental Data and Ratios(7)
                                                       
Net assets applicable to common stockholders, end of period
  $ 1,614,708     $ 1,038,277     $ 651,156     $ 1,300,030     $ 1,103,392     $ 932,090     $ 792,836  
Ratio of Expenses to Average Net Assets
                                                       
Management fees
    2.1 %     2.1 %     2.2 %     2.3 %     3.2 %     1.2 %     0.8 %
Other expenses
    0.3       0.4       0.3       0.2       0.2       0.3       0.4  
 
                                         
Subtotal
    2.4       2.5       2.5       2.5       3.4       1.5       1.2  
 
                                                       
Interest expense and distributions on mandatory redeemable preferred stock
    1.9       2.5       3.4       2.3       1.7       0.8       0.0  
Income tax expense
    16.6       25.4        (8)     3.5       13.8       6.4       3.5  
 
                                         
Total expenses
    20.9 %     30.4 %     5.9 %     8.3 %     18.9 %     8.7 %     4.7 %
 
                                         
Ratio of net investment income/(loss) to average net assets
    (1.9 )%     (2.0 )%     (2.8 )%     (2.3 )%     (2.4 )%     (0.7 )%     0.5 %
Net increase/(decrease) in net assets to common stockholders resulting from operations to average net assets
    21.1 % (6)     43.2 %     (51.2 )%     7.3 %     21.7 %     10.0 %     0.9 % (6)
Portfolio turnover rate
    12.9 % (6)     28.9 %     6.7 %     10.6 %     10.0 %     25.6 %     11.8 % (6)
Average net assets
  $ 1,317,739     $ 774,999     $ 1,143,192     $ 1,302,425     $ 986,908     $ 870,672     $ 729,280  
Senior Notes outstanding, end of period
    480,000       370,000       304,000       505,000       320,000       260,000        
Revolving credit facility outstanding, end of period
                      97,000       17,000              
See accompanying notes to financial statements.

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KAYNE ANDERSON MLP INVESTMENT COMPANY
FINANCIAL HIGHLIGHTS
(amounts in 000’s, except share and per share amounts)
                                                         
                                                    For the Period  
    For the Nine                                             September 28,  
    Months Ended                                             2004(1)  
    August 31,                                             through  
    2010     For the Fiscal Year Ended November 30,     November 30,  
    (Unaudited)     2009     2008     2007     2006     2005     2004  
Supplemental Data and Ratios — continued(7)
                                                       
Auction Rate Preferred Stock, end of period
        $ 75,000     $ 75,000     $ 75,000     $ 75,000     $ 75,000        
Mandatory Redeemable Preferred Stock, end of period
  $ 110,000                                      
Average shares of common stock outstanding
    58,271,072       46,894,632       43,671,666       41,134,949       37,638,314       34,077,731       33,165,900  
Asset coverage of total debt(9)
    459.3 %     400.9 %     338.9 %     328.4 %     449.7 %     487.3 %      
Asset coverage of total leverage (debt and preferred stock)(10)
    373.7 %     333.3 %     271.8 %     292.0 %     367.8 %     378.2 %      
Average amount of borrowings per share of common stock during the period(2)
  $ 7.62     $ 6.79     $ 11.52     $ 12.14     $ 8.53     $ 5.57        
 
(1)   Commencement of operations.
 
(2)   Based on average shares of common stock outstanding.
 
(3)   Initial public offering price of $25.00 per share less underwriting discounts of $1.25 per share and offering costs of $0.05 per share.
 
(4)   The information presented for the nine months ended August 31, 2010 is an estimate of the characterization of the distribution paid and is based on the Company’s operating results during the period. The information presented for each other period is an actual characterization of a portion of the total distributions paid to preferred stockholders and common stockholders as either a dividend (ordinary income) or a distribution (return of capital) and is based on the Company’s earnings and profits.
 
(5)   Total investment return is calculated assuming a purchase of common stock at the market price on the first day and a sale at the current market price on the last day of the period reported. The calculation also assumes reinvestment of distributions at actual prices pursuant to the Company’s dividend reinvestment plan.
 
(6)   Not annualized.
 
(7)   Unless otherwise noted, ratios are annualized for periods of less than one full year.
 
(8)   For the year ended November 30, 2008, the Company accrued deferred income tax benefits of $339,991 (29.7% of average net assets) primarily related to unrealized losses on investments. Realization of a deferred tax benefit is dependent on whether there will be sufficient taxable income of the appropriate character within the carryforward periods to realize a portion or all of the deferred tax benefit. No deferred income tax benefit has been included for the purpose of calculating total expense.
 
(9)   Calculated pursuant to section 18(a)(1)(A) of the 1940 Act. Represents the value of total assets less all liabilities not represented by senior notes or any other senior securities representing indebtedness and mandatory redeemable preferred stock divided by the aggregate amount of senior notes and any other senior securities representing indebtedness. Under the 1940 Act, the Company may not declare or make any distribution on its common stock nor can it incur additional indebtedness if, at the time of such declaration or incurrence, its asset coverage with respect to senior securities representing indebtedness would be less than 300%. For purposes of this test, the revolving credit facility is considered a senior security representing indebtedness.
 
(10)   Calculated pursuant to section 18(a)(2)(A) of the 1940 Act. Represents the value of total assets less all liabilities not represented by senior notes, any other senior securities representing indebtedness and preferred stock divided by the aggregate amount of senior notes, any other senior securities representing indebtedness and preferred stock. Under the 1940 Act, the Company may not declare or make any distribution on its common stock nor can it incur additional preferred stock if at the time of such declaration or incurrence its asset coverage with respect to all senior securities would be less than 200%. For purposes of this test, the revolving credit facility is considered a senior security representing indebtedness.
See accompanying notes to financial statements.

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Table of Contents

KAYNE ANDERSON MLP INVESTMENT COMPANY
NOTES TO FINANCIAL STATEMENTS
AUGUST 31, 2010
(amounts in 000’s, except option contracts, share and per share amounts)
(UNAUDITED)
1. Organization
          Kayne Anderson MLP Investment Company (the “Company”) was organized as a Maryland corporation on June 4, 2004, and is a non-diversified closed-end management investment company registered under the Investment Company Act of 1940, as amended (the “1940 Act”). The Company’s investment objective is to obtain a high after-tax total return by investing at least 85% of its net assets plus any borrowings (“total assets”) in energy-related master limited partnerships and their affiliates (collectively, “MLPs”), and in other companies that, as their principal business, operate assets used in the gathering, transporting, processing, storing, refining, distributing, mining or marketing of natural gas, natural gas liquids (including propane), crude oil, refined petroleum products or coal (collectively with MLPs, “Midstream Energy Companies”). The Company commenced operations on September 28, 2004. The Company’s shares of common stock are listed on the New York Stock Exchange, Inc. (“NYSE”) under the symbol “KYN.”
2. Significant Accounting Policies
          A. Use of Estimates — The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenue and expenses during the period. Actual results could differ materially from those estimates.
          B. Calculation of Net Asset Value — The Company determines its net asset value no less frequently than as of the last day of each month based on the most recent close of regular session trading on the NYSE, and makes its net asset value available for publication monthly. Currently, the Company calculates its net asset value on a weekly basis. Net asset value is computed by dividing the value of the Company’s assets (including accrued interest and distributions), less all of its liabilities (including accrued expenses, distributions payable, current, deferred and other accrued income taxes, and any borrowings) and the liquidation value of any outstanding preferred stock, by the total number of common shares outstanding.
          C. Investment Valuation — Readily marketable portfolio securities listed on any exchange other than the NASDAQ Stock Market, Inc. (“NASDAQ”) are valued, except as indicated below, at the last sale price on the business day as of which such value is being determined. If there has been no sale on such day, the securities are valued at the mean of the most recent bid and ask prices on such day. Securities admitted to trade on the NASDAQ are valued at the NASDAQ official closing price. Portfolio securities traded on more than one securities exchange are valued at the last sale price on the business day as of which such value is being determined at the close of the exchange representing the principal market for such securities.
          Equity securities traded in the over-the-counter market, but excluding securities admitted to trading on the NASDAQ, are valued at the closing bid prices. Energy debt securities that are considered corporate bonds are valued by using the mean of the bid and ask prices provided by an independent pricing service. For energy debt securities that are considered corporate bank loans, the fair market value is determined by the mean of the bid and ask prices provided by the syndicate bank or principal market maker. When price quotes are not available, fair market value will be based on prices of comparable securities. In certain cases, the Company may not be able to purchase or sell energy debt securities at the quoted prices due to the lack of liquidity for these securities.
          Exchange-traded options and futures contracts are valued at the last sales price at the close of trading in the market where such contracts are principally traded or, if there was no sale on the applicable exchange on such day, at the mean between the quoted bid and ask price as of the close of such exchange.
          The Company holds securities that are privately issued or otherwise restricted as to resale. For these securities, as well as any other portfolio security held by the Company for which reliable market quotations are not readily available, valuations are determined in a manner that most fairly reflects fair value of the security on the

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KAYNE ANDERSON MLP INVESTMENT COMPANY
NOTES TO FINANCIAL STATEMENTS
AUGUST 31, 2010
(amounts in 000’s, except option contracts, share and per share amounts)
(UNAUDITED)
valuation date. Unless otherwise determined by the Board of Directors, the following valuation process is used for such securities:
    Investment Team Valuation. The applicable investments are initially valued by KA Fund Advisors, LLC (“KAFA” or the “Adviser”) investment professionals responsible for the portfolio investments.
 
    Investment Team Valuation Documentation. Preliminary valuation conclusions are documented and discussed with senior management of KAFA. Such valuations generally are submitted to the Valuation Committee (a committee of the Company’s Board of Directors) or the Board of Directors on a monthly basis, and stand for intervening periods of time.
 
    Valuation Committee. The Valuation Committee meets, generally, on or about the end of each month to consider new valuations presented by KAFA, if any, which were made in accordance with the valuation procedures in such month. Between meetings of the Valuation Committee, a senior officer of KAFA is authorized to make valuation determinations. The Valuation Committee’s valuations stand for intervening periods of time unless the Valuation Committee meets again at the request of KAFA, the Board of Directors, or the Valuation Committee itself. All valuation determinations of the Valuation Committee are subject to ratification by the Board at its next regular meeting.
 
    Valuation Firm. No less than quarterly, a third-party valuation firm engaged by the Board of Directors reviews the valuation methodologies and calculations employed for these securities.
 
    Board of Directors Determination. The Board of Directors meets quarterly to consider the valuations provided by KAFA and the Valuation Committee, if applicable, and ratify valuations for the applicable securities. The Board of Directors considers the report provided by the third-party valuation firm in reviewing and determining in good faith the fair value of the applicable portfolio securities.
          Unless otherwise determined by the Board of Directors, securities that are convertible into or otherwise will become publicly traded (e.g., through subsequent registration or expiration of a restriction on trading) are valued through the process described above, using a valuation based on the fair value of the publicly traded security less a discount. The discount is initially equal in amount to the discount negotiated at the time the purchase price is agreed to. To the extent that such securities are convertible or otherwise become publicly traded within a time frame that may be reasonably determined, KAFA may determine an applicable discount in accordance with a methodology approved by the Valuation Committee.
          At August 31, 2010, the Company held 3.5% of its net assets applicable to common stockholders (2.3% of total assets) in securities valued at fair value, as determined pursuant to procedures adopted by the Board of Directors, with fair value of $56,567. See Note 7 — Restricted Securities.
          D. Repurchase Agreements — The Company has agreed to purchase securities from financial institutions, subject to the seller’s agreement to repurchase them at an agreed-upon time and price (“repurchase agreements”). The financial institutions with which the Company enters into repurchase agreements are banks and broker/dealers which KAFA considers creditworthy. The seller under a repurchase agreement is required to maintain the value of the securities as collateral, subject to the agreement, at not less than the repurchase price plus accrued interest. KAFA monitors daily the mark-to-market of the value of the collateral, and, if necessary, requires the seller to maintain additional securities so that the value of the collateral is not less than the repurchase price. Default by or bankruptcy of the seller would, however, expose the Company to possible loss because of adverse market action or delays in connection with the disposition of the underlying securities.
          E. Short Sales — A short sale is a transaction in which the Company sells securities it does not own (but has borrowed) in anticipation of or to hedge against a decline in the market price of the securities. To complete a short sale, the Company may arrange through a broker to borrow the securities to be delivered to the buyer. The proceeds received by the Company for the short sale are retained by the broker until the Company replaces the borrowed

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KAYNE ANDERSON MLP INVESTMENT COMPANY
NOTES TO FINANCIAL STATEMENTS
AUGUST 31, 2010
(amounts in 000’s, except option contracts, share and per share amounts)
(UNAUDITED)
securities. In borrowing the securities to be delivered to the buyer, the Company becomes obligated to replace the securities borrowed at their market price at the time of replacement, whatever the price may be.
          All short sales are fully collateralized. The Company maintains assets consisting of cash or liquid securities equal in amount to the liability created by the short sale. These assets are adjusted daily to reflect changes in the value of the securities sold short. The Company is liable for any dividends or distributions paid on securities sold short.
          The Company may also sell short “against the box” (i.e., the Company enters into a short sale as described above while holding an offsetting long position in the security which it sold short). If the Company enters into a short sale “against the box,” the Company segregates an equivalent amount of securities owned as collateral while the short sale is outstanding. At August 31, 2010, the Company had no open short sales.
          F. Security Transactions — Security transactions are accounted for on the date these securities are purchased or sold (trade date). Realized gains and losses are reported on an identified cost basis.
          G. Return of Capital Estimates — Distributions received from the Company’s investments in MLPs generally are comprised of income and return of capital. The Company records investment income and return of capital based on estimates made at the time such distributions are received. Such estimates are based on historical information available from each MLP and other industry sources. These estimates may subsequently be revised based on information received from MLPs after their tax reporting periods are concluded.
          The following table sets forth the Company’s estimated total return of capital portion of the distributions received from its investments. The return of capital portion of the distributions is a reduction to investment income, results in an equivalent reduction in the cost basis of the associated investments and increases Net Realized Gains and Net Change in Unrealized Gains in each of the periods presented below.
                 
    Three Months Ended     Nine Months Ended  
    August 31, 2010     August 31, 2010  
Estimated return of capital portion of distributions received
    88 %     88 %
Return of capital — attributable to Net Realized Gains
  $ 7,274     $ 15,186  
Return of capital — attributable to Net Change in Unrealized Gains
    23,503       72,142  
 
           
Total return of capital
  $ 30,777     $ 87,328  
 
           
          H. Investment Income — The Company records dividends and distributions on the ex-dividend date. Interest income is recognized on the accrual basis, including amortization of premiums and accretion of discounts. When investing in securities with payment in-kind interest, the Company will accrue interest income during the life of the security even though it will not be receiving cash as the interest is accrued. To the extent that interest income to be received is not expected to be realized, a reserve against income is established.
          Many of the Company’s debt securities were purchased at a discount or premium to the par value of the security. The non-cash accretion of a discount to par value increases interest income while the non-cash amortization of a premium to par value decreases interest income. The accretion of a discount and amortization of premiums are based on the effective interest method. The amount of these non-cash adjustments can be found in the Company’s Statement of Cash Flows. The non-cash accretion of a discount increases the cost basis of the debt security, which results in an offsetting unrealized loss. The non-cash amortization of a premium decreases the cost basis of the debt security which results in an offsetting unrealized gain. To the extent that par value is not expected to be realized, the Company discontinues accruing the non-cash accretion of the discount to par value of the debt security.
          During the three and nine months ended August 31, 2010, the Company did not record any interest income related to its investment in Clearwater Natural Resources, LP (“Clearwater”). Since the second quarter of 2009, the Company has not accrued interest income on its investment in Clearwater.

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KAYNE ANDERSON MLP INVESTMENT COMPANY
NOTES TO FINANCIAL STATEMENTS
AUGUST 31, 2010
(amounts in 000’s, except option contracts, share and per share amounts)
(UNAUDITED)
          The Company’s stock dividends and distributions consist of additional units of Enbridge Energy Management, L.L.C. and Kinder Morgan Management, LLC. The additional units are not reflected in investment income during the period received but are recorded as unrealized gains. During the three and nine months ended August 31, 2010, the Company received the following stock dividends from Enbridge Energy Management, L.L.C. and Kinder Morgan Management, LLC.
                 
    Three Months Ended     Nine Months Ended  
    August 31, 2010     August 31, 2010  
Enbridge Energy Management, L.L.C.
  $ 976     $ 2,484  
Kinder Morgan Management, LLC
    2,837       7,728  
 
           
Total stock dividends
  $ 3,813     $ 10,212  
 
           
          I. Distributions to Stockholders — Distributions to common stockholders are recorded on the ex-dividend date. Distributions to mandatory redeemable preferred stockholders are accrued on a daily basis as described in Note 12 — Preferred Stock. As required by the Distinguishing Liabilities from Equity topic of the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification, the Company includes the accrued distributions on its mandatory redeemable preferred stock as an operating expense due to the fixed term of this obligation. The estimated characterization of the distributions paid to preferred and common stockholders will be either a dividend (ordinary income) or distribution (return of capital). This estimate is based on the Company’s operating results during the period. The actual characterization of the preferred and common stock distributions made during the current year will not be determinable until after the end of the fiscal year when the Company can determine earnings and profits and, therefore, the characterization may differ from the preliminary estimates.
          J. Partnership Accounting Policy — The Company records its pro rata share of the income/(loss) and capital gains/(losses), to the extent of distributions it has received, allocated from the underlying partnerships and adjusts the cost basis of the underlying partnerships accordingly. These amounts are included in the Company’s Statement of Operations.
          K. Federal and State Income Taxation — The Company, as a corporation, is obligated to pay federal and state income tax on its taxable income. The Company invests its assets primarily in MLPs, which generally are treated as partnerships for federal income tax purposes. As a limited partner in the MLPs, the Company includes its allocable share of the MLP’s taxable income in computing its own taxable income. Deferred income taxes reflect (i) taxes on unrealized gains/(losses), which are attributable to the temporary difference between fair value and tax basis, (ii) the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes and (iii) the net tax benefit of accumulated net operating and capital losses. To the extent the Company has a deferred tax asset, consideration is given as to whether or not a valuation allowance is required. The need to establish a valuation allowance for deferred tax assets is assessed periodically by the Company based on the Income Tax Topic of the FASB Accounting Standards Codification that it is more likely than not that some portion or all of the deferred tax asset will not be realized. In the assessment for a valuation allowance, consideration is given to all positive and negative evidence related to the realization of the deferred tax asset. This assessment considers, among other matters, the nature, frequency and severity of current and cumulative losses, forecasts of future profitability (which are highly dependent on future cash distributions from the Company’s MLP holdings), the duration of statutory carryforward periods and the associated risk that operating and capital loss carryforwards may expire unused.
          The Company may rely to some extent on information provided by the MLPs, which may not necessarily be timely, to estimate taxable income allocable to the MLP units held in the portfolio and to estimate the associated deferred tax liability. Such estimates are made in good faith. From time to time, as new information becomes available, the Company modifies its estimates or assumptions regarding the deferred tax liability.
          The Company’s policy is to classify interest and penalties associated with underpayment of federal and state income taxes, if any, as income tax expense on its Statement of Operations. As of August 31, 2010, the Company

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KAYNE ANDERSON MLP INVESTMENT COMPANY
NOTES TO FINANCIAL STATEMENTS
AUGUST 31, 2010
(amounts in 000’s, except option contracts, share and per share amounts)
(UNAUDITED)
does not have any interest or penalties associated with the underpayment of any income taxes. All tax years since inception remain open and subject to examination by tax jurisdictions.
          L. Derivative Financial Instruments — The Company may utilize derivative financial instruments in its operations.
          Interest rate swap contracts. The Company may use interest rate swap contracts to hedge against increasing interest expense on its leverage resulting from increases in short term interest rates. The Company does not hedge any interest rate risk associated with portfolio holdings. Interest rate transactions the Company uses for hedging purposes expose it to certain risks that differ from the risks associated with its portfolio holdings. A decline in interest rates may result in a decline in the value of the swap contracts, which, everything else being held constant, would result in a decline in the net assets of the Company. In addition, if the counterparty to an interest rate swap defaults, the Company would not be able to use the anticipated net receipts under the interest rate swap to offset its cost of financial leverage.
          Interest rate swap contracts are recorded at fair value with changes in value during the reporting period and amounts accrued under the agreements included as unrealized gains or losses in the Statement of Operations. Monthly cash settlements under the terms of the interest rate swap agreements are recorded as realized gains or losses in the Statement of Operations. The Company generally values its interest rate swap contracts based on dealer quotations, if available, or by discounting the future cash flows from the stated terms of the interest rate swap agreement by using interest rates currently available in the market. See Note 8 — Derivative Financial Instruments.
          Option contracts. The Company is also exposed to financial market risks including changes in the valuations of its investment portfolio. The Company may purchase or write (sell) call options. A call option on a security is a contract that gives the holder of the option, in return for a premium, the right to buy from the writer of the option the security underlying the option at a specified exercise price at any time during the term of the option.
          The Company would normally purchase call options in anticipation of an increase in the market value of securities of the type in which it may invest. The Company would ordinarily realize a gain on a purchased call option if, during the option period, the value of such securities exceeded the sum of the exercise price, the premium paid and transaction costs; otherwise the Company would realize either no gain or a loss on the purchased call option. The Company may also purchase put option contracts. If a purchased put option is exercised, the premium paid increases the cost basis of the securities sold by the Company.
          The Company may also write (sell) call options with the purpose of generating income or reducing its ownership of certain securities. The writer of an option on a security has the obligation upon exercise of the option to deliver the underlying security upon payment of the exercise price.
          When the Company writes a call option, an amount equal to the premium received by the Company is recorded as a liability and is subsequently adjusted to the current fair value of the option written. Premiums received from writing options that expire unexercised are treated by the Company on the expiration date as realized gains from investments. If the Company repurchases a written call option prior to its exercise, the difference between the premium received and the amount paid to repurchase the option is treated as a realized gain or loss. If a call option is exercised, the premium is added to the proceeds from the sale of the underlying security in determining whether the Company has realized a gain or loss. The Company, as the writer of an option, bears the market risk of an unfavorable change in the price of the security underlying the written option. See Note 8 — Derivative Financial Instruments.
          M. Indemnifications — Under the Company’s organizational documents, its officers and directors are indemnified against certain liabilities arising out of the performance of their duties to the Company. In addition, in the normal course of business, the Company enters into contracts that provide general indemnification to other parties. The Company’s maximum exposure under these arrangements is unknown, as this would involve future claims that may be made against the Company that have not yet occurred, and may not occur. However, the Company has not had prior claims or losses pursuant to these contracts and expects the risk of loss to be remote.

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KAYNE ANDERSON MLP INVESTMENT COMPANY
NOTES TO FINANCIAL STATEMENTS
AUGUST 31, 2010
(amounts in 000’s, except option contracts, share and per share amounts)
(UNAUDITED)
3. Fair Value
          As required by the Fair Value Measurement and Disclosures of the FASB Accounting Standards Codification, the Company has performed an analysis of all assets and liabilities measured at fair value to determine the significance and character of all inputs to their fair value determination.
          The fair value hierarchy prioritizes the inputs to valuation techniques used to measure fair value into the following three broad categories.
    Level 1 — Quoted unadjusted prices for identical instruments in active markets to which the Company has access at the date of measurement.
 
    Level 2 — Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets. Level 2 inputs are those in markets for which there are few transactions, the prices are not current, little public information exists or instances where prices vary substantially over time or among brokered market makers.
 
    Level 3 — Model derived valuations in which one or more significant inputs or significant value drivers are unobservable. Unobservable inputs are those inputs that reflect the Company’s own assumptions that market participants would use to price the asset or liability based on the best available information.
          The following table presents the Company’s assets measured at fair value at August 31, 2010. Note that the valuation levels below are not necessarily an indication of the risk or liquidity associated with the underlying investment. For instance, the Company’s repurchase agreements, which are collateralized by U.S. Treasury notes, are generally high quality and liquid; however, the Company reflects these repurchase agreements as Level 2 because the inputs used to determine fair value may not always be quoted prices in an active market.
                                 
            Quoted Prices in     Prices with Other     Unobservable  
            Active Markets     Observable Inputs     Inputs  
    Total     (Level 1)     (Level 2)     (Level 3)(1)  
Assets at Fair Value
                               
Equity investments
  $ 2,412,587     $ 2,360,780     $     $ 51,807  
Energy debt investments
    54,657             49,897       4,760  
Option contracts purchased
    10             10        
Repurchase agreement
    17,221             17,221        
 
                       
Total assets at fair value
  $ 2,484,475     $ 2,360,780     $ 67,128     $ 56,567  
 
                       
 
                               
Liabilities at Fair Value
                               
Option contracts written
  $ 389     $     $ 389     $  
 
                       
 
(1)   The Company’s investments in Level 3 represent its investments in Magellan Midstream Partners, L.P., Inergy Holdings, L.P., Clearwater Natural Resources, L.P. and CNR GP Holdco, LLC as more fully described in Note 7 — Restricted Securities.

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KAYNE ANDERSON MLP INVESTMENT COMPANY
NOTES TO FINANCIAL STATEMENTS
AUGUST 31, 2010
(amounts in 000’s, except option contracts, share and per share amounts)
(UNAUDITED)
          The following table presents the Company’s assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three and nine months ended August 31, 2010.
         
    Long-Term  
Assets at Fair Value Using Unobservable Inputs (Level 3)   Investments  
Balance — May 31, 2010
  $ 4,760  
Transfers out of Level 3
     
Realized gains/(losses)
     
Unrealized gains, net
    6,945  
Purchases, issuances or settlements
    44,862  
 
     
Balance — August 31, 2010
  $ 56,567  
 
     
         
    Long-Term  
Assets at Fair Value Using Unobservable Inputs (Level 3)   Investments  
Balance — November 30, 2009
  $ 4,080  
Transfers out of Level 3
     
Realized gains/(losses)
     
Unrealized gains, net
    7,625  
Purchases, issuances or settlements
    44,862  
 
     
Balance — August 31, 2010
  $ 56,567  
 
     
          The $6,945 and $7,625 of unrealized gains presented in the table above for the three and nine months ended August 31, 2010 related to investments that are still held at August 31, 2010, and the Company includes these unrealized gains on the Statement of Operations — Net Change in Unrealized Gains/(Losses).
          The Company did not have any liabilities that were measured at fair value on a recurring basis using significant unobservable inputs (Level 3) at August 31, 2010, May 31, 2010 or at November 30, 2009.
          In January 2010, the FASB issued Accounting Standards Update (“ASU”) No. 2010-06 “Improving Disclosures about Fair Value Measurements.” ASU No. 2010-06 amends FASB Accounting Standards Codification Topic, Fair Value Measurements and Disclosures, to require additional disclosures regarding fair value measurements. Certain disclosures required by ASU No. 2010-06 are effective for interim and annual reporting periods beginning after December 15, 2009, and other required disclosures are effective for fiscal years beginning after December 15, 2010, and for interim periods within those fiscal years. Management is currently evaluating the impact ASU No. 2010-06 will have on its financial statement disclosures.
4. Concentration of Risk
          The Company’s investment objective is to obtain a high after-tax total return with an emphasis on current income paid to its stockholders. Under normal circumstances, the Company intends to invest at least 85% of its total assets in securities of MLPs and other Midstream Energy Companies, and to invest at least 80% of its total assets in MLPs, which are subject to certain risks, such as supply and demand risk, depletion and exploration risk, commodity pricing risk, acquisition risk, and the risk associated with the hazards inherent in midstream energy industry activities. A substantial portion of the cash flow received by the Company is derived from investment in equity securities of MLPs. The amount of cash that an MLP has available for distributions and the tax character of such distributions are dependent upon the amount of cash generated by the MLP’s operations. The Company may invest up to 15% of its total assets in any single issuer and a decline in value of the securities of such an issuer could significantly impact the net asset value of the Company. The Company may invest up to 20% of its total assets in debt securities, which may include below investment grade securities. The Company may, for defensive purposes,

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KAYNE ANDERSON MLP INVESTMENT COMPANY
NOTES TO FINANCIAL STATEMENTS
AUGUST 31, 2010
(amounts in 000’s, except option contracts, share and per share amounts)
(UNAUDITED)
temporarily invest all or a significant portion of its assets in investment grade securities, short-term debt securities and cash or cash equivalents. To the extent the Company uses this strategy, it may not achieve its investment objectives.
5. Agreements and Affiliations
          A. Administration Agreement — The Company has entered into an administration agreement with Ultimus Fund Solutions, LLC (“Ultimus”). Pursuant to the administration agreement, Ultimus will provide certain administrative services for the Company. The administration agreement has automatic one-year renewals unless earlier terminated by either party as provided under the terms of the administration agreement.
          B. Investment Management Agreement — The Company has entered into an investment management agreement with KAFA under which the Adviser, subject to the overall supervision of the Company’s Board of Directors, manages the day-to-day operations of, and provides investment advisory services to, the Company. For providing these services, the Adviser receives a management fee from the Company. On June 15, 2010, the Company renewed its agreement with the Adviser for a period of one year. The agreement may be renewed annually upon approval of the Company’s Board of Directors. For the nine months ended August 31, 2010, the Company paid management fees at an annual rate of 1.375% of average total assets.
          For purposes of calculating the management fee, the Company’s total assets are equal to the Company’s gross asset value (which includes assets attributable to or proceeds from the Company’s use of preferred stock, commercial paper or notes and other borrowings and excludes any net deferred tax asset), minus the sum of the Company’s accrued and unpaid distributions on any outstanding common stock and accrued and unpaid distributions on any outstanding preferred stock and accrued liabilities (other than liabilities associated with borrowing or leverage by the Company and any accrued taxes, including, a deferred tax liability). Liabilities associated with borrowing or leverage by the Company include the principal amount of any borrowings, commercial paper or notes issued by the Company, the liquidation preference of any outstanding preferred stock, and other liabilities from other forms of borrowing or leverage such as short positions and put or call options held or written by the Company.
          C. Portfolio Companies — From time to time, the Company may “control” or may be an “affiliate” of one or more portfolio companies, each as defined in the 1940 Act. In general, under the 1940 Act, the Company would be presumed to “control” a portfolio company if the Company owned 25% or more of its outstanding voting securities and would be an “affiliate” of a portfolio company if the Company owned 5% or more of its outstanding voting securities. The 1940 Act contains prohibitions and restrictions relating to transactions between investment companies and their affiliates (including the Company’s investment adviser), principal underwriters and affiliates of those affiliates or underwriters.
          The Company believes that there is significant ambiguity in the application of existing Securities and Exchange Commission (“SEC”) staff interpretations of the term “voting security” to complex structures such as limited partnership interests of the kind in which the Company invests. As a result, it is possible that the SEC staff may consider that certain securities investments in limited partnerships are voting securities under the staff’s prevailing interpretations of this term. If such determination is made, the Company may be regarded as a person affiliated with and controlling the issuers(s) of those securities for purposes of Section 17 of the 1940 Act.
          In light of the ambiguity of the definition of voting securities, the Company does not intend to treat any class of limited partnership interests that it holds as “voting securities” unless the security holders of such class currently have the ability, under the partnership agreement, to remove the general partner (assuming a sufficient vote of such securities, other than securities held by the general partner, in favor of such removal) or the Company has an economic interest of sufficient size that otherwise gives it the de facto power to exercise a controlling influence over the partnership. The Company believes this treatment is appropriate given that the general partner controls the partnership, and without the ability to remove the general partner or the power to otherwise exercise a controlling

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KAYNE ANDERSON MLP INVESTMENT COMPANY
NOTES TO FINANCIAL STATEMENTS
AUGUST 31, 2010
(amounts in 000’s, except option contracts, share and per share amounts)
(UNAUDITED)
influence over the partnership due to the size of an economic interest, the security holders have no control over the partnership.
          Clearwater Natural Resources, LP — At August 31, 2010, the Company held approximately 42.5% of the limited partnership interest of Clearwater. The Company controls CNR GP Holdco, LLC, which is the general partner of Clearwater. The Company believes that it “controls” and is an “affiliate” of Clearwater under the 1940 Act by virtue of its controlling interest in the general partner of Clearwater.
          On January 12, 2010, Clearwater closed on the sale of all of its reserves and a substantial portion of its operating assets to International Resource Partners, L.P. (“IRP”). On March 16, 2010, the Bankruptcy Court confirmed Clearwater’s plan of reorganization (including such sale of assets to IRP). As part of Clearwater’s plan of reorganization, the Company will receive consideration for its unsecured term loan. Such consideration will be in the form of cash and a royalty interest in the reserves sold. Pursuant to the plan of reorganization, the Company will not receive any consideration for its equity investment in Clearwater or CNR GP Holdco, LLC. See Note 7 — Restricted Securities.
          Plains All American Pipeline, L.P and PAA Natural Gas Storage, L.P. — Robert V. Sinnott is chief executive officer of Kayne Anderson Capital Advisors, L.P. (“KACALP”), the managing member of KAFA. Mr. Sinnott also serves as a director on the board of Plains All American GP LLC, the general partner of Plains All American Pipeline, L.P. Members of senior management and various advisory clients of KACALP and KAFA indirectly own units of Plains All American GP LLC. Various advisory clients of KACALP and KAFA, including the Company, own units in Plains All American Pipeline, L.P and PAA Natural Gas Storage, L.P. The Company believes that it is an affiliate of Plains All American Pipeline, L.P. and PAA Natural Gas Storage, L.P. under the 1940 Act.
6. Income Taxes
          Deferred income taxes reflect (i) taxes on unrealized gains/(losses), which are attributable to the difference between fair market value and tax basis, (ii) the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes and (iii) the net tax benefit of accumulated net operating losses. Components of the Company’s deferred tax assets and liabilities as of August 31, 2010 are as follows:
         
Deferred tax assets:
       
Net operating loss carryforwards — Federal
  $ 46,712  
Net operating loss carryforwards — State
    3,831  
Capital loss carryforwards
    41,274  
Other
    105  
Deferred tax liabilities:
       
Net unrealized gains on investment securities, interest rate swap contracts and option contracts
    (338,877 )
Basis reductions resulting from estimated return of capital
    (15,272 )
 
     
Total net deferred tax liability
  $ (262,227 )
 
     
          At August 31, 2010, the Company had federal net operating loss carryforwards of $137,741 (deferred tax asset of $46,712). Realization of the deferred tax assets and net operating loss carryforwards are dependent, in part, on generating sufficient taxable income prior to expiration of the loss carryforwards. If not utilized, $36,622; $52,182; $26,118 and $22,819 of the net operating loss carryforward will expire in 2026, 2027, 2028 and 2029, respectively. As of August 31, 2010, the Company had federal and state capital loss carryforwards of approximately $111,607 (deferred tax asset of $41,274). If not utilized, $24,798 and $86,809 of capital loss carry forwards will expire in 2013 and 2014, respectively. For corporations, capital losses can only be used to offset capital gains and

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KAYNE ANDERSON MLP INVESTMENT COMPANY
NOTES TO FINANCIAL STATEMENTS
AUGUST 31, 2010
(amounts in 000’s, except option contracts, share and per share amounts)
(UNAUDITED)
cannot be used to offset ordinary income. In addition, the Company has state net operating losses of $124,506 (deferred tax asset of $3,831). These state net operating losses begin to expire in 2011 through 2029.
          Although the Company currently has a net deferred tax liability, it periodically reviews the recoverability of its deferred tax assets based on the weight of available evidence. When assessing the recoverability of its deferred tax assets, significant weight was given to the effects of potential future realized and unrealized gains on investments and the period over which these deferred tax assets can be realized, as the expiration dates for the federal capital and operating loss carryforwards range from five to nineteen years.
          Based on the Company’s assessment, it has determined that it is more likely than not that its deferred tax assets will be realized through future taxable income of the appropriate character. Accordingly, no valuation allowance has been established for the Company’s deferred tax assets. The Company will continue to assess the need for a valuation allowance in the future. Significant declines in the fair value of its portfolio of investments may change the Company’s assessment regarding the recoverability of its deferred tax assets and may result in a valuation allowance. If a valuation allowance is required to reduce any deferred tax asset in the future, it could have a material impact on the Company’s net asset value and results of operations in the period it is recorded.
          Total income taxes were different from the amount computed by applying the federal statutory income tax rate of 35% to the net investment loss and realized and unrealized gains (losses) on investments and interest rate swap contracts before taxes for the three and nine months ended August 31, 2010, as follows:
                 
    Three Months     Nine Months  
    Ended     Ended  
    August 31, 2010     August 31, 2010  
Computed “expected” federal income tax
  $ 77,912     $ 154,904  
State income tax, net of federal tax expense
    4,484       8,892  
Other
    556       710  
 
           
Total income tax expense
  $ 82,952     $ 164,506  
 
           
          At August 31, 2010, the cost basis of investments for federal income tax purposes was $1,565,479, and the net cash received on option contracts written was $533. The cost basis of investments includes a $162,554 reduction in basis attributable to the Company’s portion of the allocated losses from its MLP investments. At August 31, 2010, gross unrealized appreciation and depreciation of investments and options for federal income tax purposes were as follows:
         
Gross unrealized appreciation of investments (including options)
  $ 973,823  
Gross unrealized depreciation of investments (including options)
    (54,705 )
 
     
Net unrealized appreciation before tax
    919,118  
 
     
Net unrealized appreciation after tax
  $ 579,044  
 
     

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KAYNE ANDERSON MLP INVESTMENT COMPANY
NOTES TO FINANCIAL STATEMENTS
AUGUST 31, 2010
(amounts in 000’s, except option contracts, share and per share amounts)
(UNAUDITED)
7. Restricted Securities
          From time to time, certain of the Company’s investments may be restricted as to resale. For instance, private investments that are not registered under the Securities Act of 1933, as amended, cannot be offered for public sale in a non-exempt transaction without first being registered. In other cases, certain of the Company’s investments have restrictions such as lock-up agreements that preclude the Company from offering these securities for public sale.
          At August 31, 2010, the Company held the following restricted investments:
                                                     
                Number of                                
                Units,                             Percent of  
        Acquisition   Type of   Principal ($)     Cost             Percent of     Total  
Investment   Security   Date   Restriction   (in 000s)     Basis     Fair Value     Net Assets     Assets  
Clearwater Natural Resources, L.P.
  Common Units   (1)   (2)     3,889     $ 72,860     $              
Clearwater Natural Resources, L.P.
  Unsecured Term Loan   (3)   (2)   $ 13,601       13,690       4,760       0.3 %     0.2 %
CNR GP Holdco, LLC
  LLC Interests   3/5/08   (2)     n/a       1,083                    
Inergy Holdings, L.P.
  Common Units   6/15/10   (4)     1,526       34,533       40,583       2.5     1.6
Magellan Midstream Partners, L.P.
  Common Units   6/10/10   (4)     238       9,705       11,224       0.7     0.5
 
                                           
Total of securities valued in accordance with procedures established by the Board of Directors(5)   $ 131,871     $ 56,567       3.5 %     2.3 %
 
                                           
 
                                                   
Linn Energy, LLC
  Senior Notes   7/21/10   (6)   $ 2,000     $ 2,112     $ 2,110       0.1 %     0.1 %
Niska Gas Storage U.S., LLC
  Senior Notes   2/26/10   (6)   $ 5,000       5,022       5,263       0.3     0.2
 
                                           
Total of securities valued by prices provided by market maker or independent pricing services   $ 7,134     $ 7,373       0.4 %     0.3 %
 
                                           
Total of all restricted securities   $ 139,005     $ 63,940       3.9 %     2.6 %
 
                                           
 
(1)   The Company purchased common units on August 1, 2005 and October 2, 2006.
 
(2)   On January 7, 2009, Clearwater Natural Resources, LP (“Clearwater”) filed a voluntary petition under Chapter 11 of the U.S. Bankruptcy Code. Clearwater continued operations as a debtor-in-possession during fiscal 2009. See Note 5 — Agreements and Affiliations for a status update.
 
(3)   The Company purchased term loans on January 11, 2008; February 28, 2008; May 5, 2008; July 8, 2008; August 6, 2008; and September 29, 2008. The Company is not accruing interest income on this investment.
 
(4)   Unregistered security of a public company.
 
(5)   Restricted securities that are classified as a Level 3. Security is valued using inputs reflecting the Company’s own assumptions as more fully described in Note 2 — Significant Accounting Policies.
 
(6)   Unregistered security of a public company that are classified as a Level 2. These securities have a fair market value determined by the mean of the bid and ask prices provided by a syndicate bank, principal market maker or an independent pricing service as more fully described in Note 2 — Significant Accounting Policies. These securities have limited trading volume and are not listed on a national exchange.

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KAYNE ANDERSON MLP INVESTMENT COMPANY
NOTES TO FINANCIAL STATEMENTS
AUGUST 31, 2010
(amounts in 000’s, except option contracts, share and per share amounts)
(UNAUDITED)
8. Derivative Financial Instruments
          Option Contracts — Transactions in option contracts for the nine months ended August 31, 2010 were as follows:
                 
    Number of        
    Contracts     Premium  
Put Options Purchased
               
Options outstanding at beginning of period
    1,386     $ 89  
Options purchased
    1,000       21  
Options expired
    (1,386 )     (89 )
 
           
Options outstanding at end of period
    1,000     $ 21  
 
           
Call Options Written
               
Options outstanding at beginning of period
    7,000     $ 584  
Options written
    33,439       3,453  
Options subsequently repurchased (1)
    (13,442 )     (1,426 )
Options exercised
    (19,970 )     (1,991 )
Options expired
    (1,526 )     (87 )
 
           
Options outstanding at end of period
    5,501     $ 533  
 
           
 
(1)   The price at which the Company subsequently repurchased the options was $455.
          As required by the Derivatives and Hedging Topic of the FASB Accounting Standards Codification, below are the derivative instruments and hedging activities of the Company. The total number of outstanding options at August 31, 2010 is indicative of the volume of this type of derivative for the period ended August 31, 2010. See Note 2 — Significant Accounting Policies.
          The following table sets forth the fair value of the Company’s derivative instruments on the Statement of Assets and Liabilities.
             
Derivatives Not Accounted for as Hedging       Fair Value as of  
Instruments   Statement of Assets and Liabilities Location   August 31, 2010  
Assets
           
Put options
  Put option contracts purchased   $ 10  
Liabilities
           
Call options
  Call option contracts written     (389 )
 
         
 
      $ (379 )
 
         

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KAYNE ANDERSON MLP INVESTMENT COMPANY
NOTES TO FINANCIAL STATEMENTS
AUGUST 31, 2010
(amounts in 000’s, except option contracts, share and per share amounts)
(UNAUDITED)
          The following tables set forth the effect of the Company’s derivative instruments on the Statement of Operations.
                     
        For the Three Months Ended  
        August 31, 2010  
                Change in  
        Net Realized     Unrealized Gains/  
        Gains/(Losses) on     (Losses) on  
        Derivatives     Derivatives  
Derivatives Not Accounted For as   Location of Gains/(Losses)   Recognized in     Recognized in  
Hedging Instruments   on Derivatives Recognized in Income   Income     Income  
Put options
  Options   $     $ (12 )
 
               
 
                   
Call options
  Options   $ 580     $ 498  
 
               
                     
        For the Nine Months Ended  
        August 31, 2010  
                Change in  
        Net Realized     Unrealized Gains/  
        Gains/(Losses) on     (Losses) on  
        Derivatives     Derivatives  
Derivatives Not Accounted For as   Location of Gains/(Losses)   Recognized in     Recognized in  
Hedging Instruments   on Derivatives Recognized in Income   Income     Income  
Put options
  Options   $ (90 )   $ 64  
 
               
 
                   
Call options
  Options     1,059       950  
Interest rate swap contracts
  Interest rate swap contracts     (664 )     205  
 
               
 
      $ 305     $ 1,219  
 
               
          Interest Rate Swap Contracts — The Company may enter into interest rate swap contracts to partially hedge itself from increasing interest expense on its leverage resulting from increasing short-term interest rates. A decline in future interest rates may result in a decline in the value of the swap contracts, which, everything else being held constant, would result in a decline in the net assets of the Company. In addition, if the counterparty to the interest rate swap contracts defaults, the Company would not be able to use the anticipated receipts under the swap contracts to offset the interest payments on the Company’s leverage. At the time the interest rate swap contracts reach their scheduled termination, there is a risk that the Company would not be able to obtain a replacement transaction or that the terms of the replacement transaction would not be as favorable as on the expiring transaction. In addition, if the Company is required to terminate any swap contract early, then the Company could be required to make a termination payment.
          As of August 31, 2010, the Company did not have any interest rate swap contracts outstanding.
9. Investment Transactions
          For the nine months ended August 31, 2010, the Company purchased and sold securities in the amounts of $757,677 and $262,591 (excluding short-term investments, options and interest rate swaps), respectively.
10. Revolving Credit Facility
          On June 11, 2010, the Company entered into a new $100,000 unsecured revolving credit facility (the “Credit Facility”) with a syndicate of lenders. The Credit Facility has a three-year commitment terminating on June 11, 2013. The interest rate may vary between LIBOR plus 1.75% to LIBOR plus 3.00%, depending on the Company’s asset coverage ratios. Outstanding loan balances will accrue interest daily at a rate equal to the one-month LIBOR plus 1.75% based on current asset coverage ratios. The Company will pay a fee of 0.40% on any unused amounts of the Credit Facility.
          For the nine months ended August 31, 2010, the average amount outstanding under the Company’s credit facilities was $27,057 with a weighted average interest rate of 2.70%. As of August 31, 2010, the Company had no outstanding borrowings on the Credit Facility.

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KAYNE ANDERSON MLP INVESTMENT COMPANY
NOTES TO FINANCIAL STATEMENTS
AUGUST 31, 2010
(amounts in 000’s, except option contracts, share and per share amounts)
(UNAUDITED)
11. Senior Unsecured Notes
          At August 31, 2010, the Company had $480,000, aggregate principal amount, of senior unsecured fixed and floating rate notes (the “Senior Unsecured Notes”) outstanding.
          The table below sets forth the key terms of each series of the Senior Unsecured Notes.
                                     
        Principal             Principal          
        Outstanding,     Principal Issued,     Outstanding,          
Series       November 30, 2009     May 7, 2010     August 31, 2010     Interest Rate   Maturity
G  
 
  $ 75,000           $ 75,000     5.645%   6/19/2011
I  
 
    60,000             60,000     5.847%   6/19/2012
K  
 
    125,000             125,000     5.991%   6/19/2013
M  
 
    60,000             60,000     4.560%   11/4/2014
N  
 
    50,000             50,000     3-month LIBOR + 185 bps   11/4/2014
O  
 
        $ 65,000       65,000     4.210%   5/7/2015
P  
 
          45,000       45,000     3-month LIBOR + 160 bps   5/7/2015
   
 
                         
   
 
  $ 370,000     $ 110,000     $ 480,000          
   
 
                         
          Holders of the fixed rate Senior Unsecured Notes (Series G, Series I, Series K, Series M and Series O) are entitled to receive cash interest payments semi-annually (on June 19 and December 19) at the fixed rate. Holders of the floating rate Senior Unsecured Notes (Series N and Series P) are entitled to receive cash interest payments quarterly (on March 19, June 19, September 19 and December 19) at the floating rate equal to the 3-month LIBOR plus 1.85% and 3-month LIBOR plus 1.60%, respectively.
          During the period, the average principal balance outstanding was $416,970 with a weighted average interest rate of 3.71%.
          The Senior Unsecured Notes were issued in private placement offerings to institutional investors and are not listed on any exchange or automated quotation system. The Senior Unsecured Notes contain various covenants related to other indebtedness, liens and limits on the Company’s overall leverage. Under the 1940 Act and the terms of the Senior Unsecured Notes, the Company may not declare dividends or make other distributions on shares of common stock or purchases of such shares if, at any time of the declaration, distribution or purchase, asset coverage with respect to the outstanding Senior Unsecured Notes would be less than 300%. The Senior Unsecured Notes are redeemable in certain circumstances at the option of the Company. The Senior Unsecured Notes are also subject to a mandatory redemption to the extent needed to satisfy certain requirements if the Company fails to meet an asset coverage ratio required by law and is not able to cure the coverage deficiency by the applicable deadline, or fails to cure a deficiency as stated in the Company’s rating agency guidelines in a timely manner.
          The Senior Unsecured Notes are unsecured obligations of the Company and, upon liquidation, dissolution or winding up of the Company, will rank: (1) senior to all the Company’s outstanding preferred shares; (2) senior to all of the Company’s outstanding common shares; (3) on a parity with any unsecured creditors of the Company and any unsecured senior securities representing indebtedness of the Company; and (4) junior to any secured creditors of the Company.
          At August 31, 2010, the Company was in compliance with all covenants under the Senior Unsecured Notes agreements.

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Table of Contents

KAYNE ANDERSON MLP INVESTMENT COMPANY
NOTES TO FINANCIAL STATEMENTS
AUGUST 31, 2010
(amounts in 000’s, except option contracts, share and per share amounts)
(UNAUDITED)
12. Preferred Stock
          At August 31, 2010, the Company had 4,400,000 shares of Series A mandatory redeemable preferred shares (“MRP Shares”) outstanding, totaling $110,000. The MRP Shares have a seven-year term with a redemption date of May 7, 2017 and have a liquidation value of $25.00 per share.
          Holders of the MRP Shares are entitled to receive cash dividend payments on the first business day following each quarterly dividend period (February 28, May 31, August 31 and November 30) at a fixed rate of 5.57%.
          The MRP Shares are redeemable in certain circumstances at the option of the Company and are also subject to a mandatory redemption if the Company fails to meet an asset coverage ratio of 225% or fails to maintain its basic maintenance amount as stated in the Company’s rating agency guidelines. At August 31, 2010, the Company was in compliance with the asset coverage and basic maintenance requirements of its MRP Shares.
          The holders of the MRP Shares have one vote per share and will vote together with the holders of common stock as a single class except on matters affecting only the holders of MRP Shares or the holders of common stock. The holders of the MRP Shares, voting separately as a single class, have the right to elect at least two directors of the Company.
13. Common Stock
          The Company has 199,990,000 shares of common stock authorized and 67,397,010 shares outstanding at August 31, 2010. As of that date, KACALP owned 4,000 shares. Transactions in common shares for the nine months ended August 31, 2010 were as follows:
         
Shares outstanding at November 30, 2009
    51,579,541  
Shares issued through reinvestment of distributions
    764,696  
Shares issued in connection with offerings of common stock (1)
    15,052,773  
 
       
Shares outstanding at August 31, 2010
    67,397,010  
 
       
 
(1)   On January 20, 2010, the Company closed its public offering of 6,291,600 shares of common stock at a price of $23.61 per share. Total net proceeds from the offering were $142,431 and were used by the Company to make additional portfolio investments that are consistent with the Company’s investment objective, and for general corporate purposes.
 
    On June 10 and June 15, 2010, the Company completed two private placements of unregistered common stock to members of senior management of Magellan Midstream Partners, L.P. (“MMP”) and Inergy Holdings, L.P (“NRGP”), respectively. The Company issued a total of 1,511,173 shares at an average price of $23.90 per share. Simultaneous with the issuance of the Company’s common stock, the Company purchased $35,000 of NRGP common units and $9,862 of MMP common units owned by such members of senior management.
 
    On August 11, 2010, the Company closed its public offering of 7,250,000 shares of common stock at a price of $26.30 per share. Total net proceeds from the offering were $182,921 and were used by the Company to make additional portfolio investments that are consistent with the Company’s investment objective, and for general corporate purposes.
14. Subsequent Events
          On September 9, 2010, the Company issued 793,877 shares of common stock at a price of $26.30 per share as a result of option granted to the underwriters in connection with the August public offering.

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KAYNE ANDERSON MLP INVESTMENT COMPANY
NOTES TO FINANCIAL STATEMENTS
AUGUST 31, 2010
(amounts in 000’s, except option contracts, share and per share amounts)
(UNAUDITED)
          On September 21, 2010, the Company declared its quarterly distribution of $0.48 per common share for the period June 1, 2010 through August 31, 2010 for a total of $32,351. The distribution was paid on October 15, 2010 to stockholders of record on October 5, 2010. Of this total, pursuant to the Company’s dividend reinvestment plan, $7,021 was reinvested into the Company through the issuance of 280,514 shares of common stock.
          On October 26, 2010 the Company reached a conditional agreement with institutional investors relating to a private placement of $140,000 of senior unsecured notes and $50,000 of mandatory redeemable preferred stock, the key terms of which are set forth below.
                           
Security   Amount       Rate     Term  
Senior Unsecured Notes
                         
Series Q
  $ 15,000         3.23 %   5 years
Series R
    25,000         3.73 %   7 years
Series S
    60,000         4.40 %   10 years
Series T
    40,000         4.50 %   12 years
 
                       
Total
  $ 140,000                    
 
                       
 
                         
Mandatory Redeemable Preferred Stock
                         
Series B
  $ 8,000         4.53 %   7 years
Series C
    42,000         5.20 %   10 years
 
                       
Total
  $ 50,000                    
 
                       
          Net proceeds from such offerings will be used to repay borrowings under the Company’s revolving credit facility, to make new portfolio investments and for general corporate purposes. Closing of the private placement is scheduled to occur on or about November 9, 2010 and is subject to investor due diligence, legal documentation and other standard closing conditions.

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Directors and Corporate Officers
   
Kevin S. McCarthy
  Chairman of the Board of Directors,
 
  President and Chief Executive Officer
Anne K. Costin
  Director
Steven C. Good
  Director
Gerald I. Isenberg
  Director
William H. Shea Jr.
  Director
Terry A. Hart
  Chief Financial Officer and Treasurer
David J. Shladovsky
  Secretary and Chief Compliance Officer
J.C. Frey
  Executive Vice President, Assistant
 
  Secretary and Assistant Treasurer
James C. Baker
  Executive Vice President
 
   
Investment Adviser
  Administrator
KA Fund Advisors, LLC.
  Ultimus Fund Solutions, LLC
717 Texas Avenue, Suite 3100
  350 Jericho Turnpike, Suite 206
Houston, TX 77002
  Jericho, NY 11753
 
   
1800 Avenue of the Stars, Second Floor
  Stock Transfer Agent and Registrar
Los Angeles, CA 90067
  American Stock Transfer & Trust Company
 
  59 Maiden Lane
 
  New York, NY 10038
 
   
Custodian
  Independent Registered Public Accounting Firm
JPMorgan Chase Bank, N.A.
  PricewaterhouseCoopers LLP
14201 North Dallas Parkway, Second Floor
  350 South Grand Avenue
Dallas, TX 75254
  Los Angeles, CA 90071
 
   
 
  Legal Counsel
 
  Paul, Hastings, Janofsky & Walker LLP
 
  55 Second Street, 24th Floor
 
  San Francisco, CA 94105
Please visit us on the web at http://www.kaynefunds.com or call us toll-free at 1-877-657-3863.
(KYN LOGO)
This report, including the financial statements herein, is made available to stockholders of the Company for their information. It is not a prospectus, circular or representation intended for use in the purchase or sale of shares of the Company or of any securities mentioned in this report.

32