Filed pursuant to 424(b)(3)
Registration No. 333-255376

ARES INDUSTRIAL REAL ESTATE INCOME TRUST INC.
SUPPLEMENT NO. 8 DATED OCTOBER 14, 2022
TO THE PROSPECTUS DATED FEBRUARY 11, 2022

This prospectus supplement (“Supplement”) is part of and should be read in conjunction with the prospectus of Ares Industrial Real Estate Income Trust Inc. (the “Company”), dated February 11, 2022, as supplemented by Supplement No. 1, dated April 14, 2022, Supplement No. 2, dated May 5, 2022, Supplement No. 3, dated May 13, 2022, Supplement No. 4, dated June 15, 2022, Supplement No. 5, dated July 15, 2022, Supplement No. 6, dated August 15, 2022, and Supplement No. 7, dated September 15, 2022 (the “Prospectus”). Unless otherwise defined herein, capitalized terms used in this Supplement shall have the same meanings as in the Prospectus.

The purpose of this Supplement is to disclose:

The transaction price for each of our share classes is equal to such class’s NAV per share as of September 30, 2022. A calculation of the NAV per share is set forth in the section of this Supplement titled “September 30, 2022 NAV Per Share.” The offering price of our common stock for each share class equals the transaction price of such class, plus applicable upfront selling commissions and dealer manager fees.

Our board of directors, including a majority of our independent directors, has adopted valuation procedures, as amended from time to time, that contain a comprehensive set of methodologies to be used in connection with the calculation of our NAV. Our most recent NAV per share for each share class, which is updated as of the last calendar day of each month, is posted on our website at www.areswmsresources.com/investment-solutions/AIREIT and is also available on our toll-free, automated telephone line at (888) 310-9352. With the approval of our board of directors, including a majority of our independent directors, we have engaged Altus Group U.S. Inc., a third-party valuation firm, to serve as our independent valuation advisor (“Altus Group” or the “Independent Valuation Advisor”) with respect to helping us administer the valuation and review process for the real properties in our portfolio, providing monthly real property appraisals, reviewing annual third-party real property appraisals, providing monthly valuations of our debt-related assets (excluding DST Program Loans), reviewing the internal valuations of DST Program Loans and debt-related liabilities performed by Ares Commercial Real Estate Management LLC (our “Advisor”), providing quarterly

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valuations of our properties subject to master lease obligations associated with the DST Program, and assisting in the development and review of our valuation procedures.

As used below, “Fund Interests” means our outstanding shares of common stock, along with the partnership units in our operating partnership (“OP Units”), which may be or were held directly or indirectly by the Advisor, our former sponsor, members or affiliates of our former sponsor, and third parties, and “Aggregate Fund NAV” means the NAV of all the Fund Interests.

The following table sets forth the components of Aggregate Fund NAV as of September 30, 2022 and August 31, 2022:

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The following table sets forth the NAV per Fund Interest as of September 30, 2022 and August 31, 2022:

Under GAAP, we record liabilities for ongoing distribution fees that (i) we currently owe the Dealer Manager under the terms of the dealer manager agreement and (ii) we estimate we may pay to the Dealer Manager in future periods for the Fund Interests. As of September 30, 2022, we estimated approximately $97.5 million of ongoing distribution fees were potentially payable to the Dealer Manager. We do not deduct the liability for estimated future distribution fees in our calculation of NAV since we intend for our NAV to reflect our estimated value on the date that we determine our NAV. Accordingly, our estimated NAV at any given time does not include consideration of any estimated future distribution fees that may become payable after such date.

We include no discounts to our NAV for the illiquid nature of our shares, including the limitations on our stockholders’ ability to redeem shares under our share redemption program and our ability to modify or suspend our share redemption program at any time. Our NAV generally does not reflect the potential impact of exit costs (e.g. selling costs and commissions related to the sale of a property) that would likely be incurred if our assets and liabilities were liquidated or sold today. While we may use market pricing concepts to value individual components of our NAV, our per share NAV is not derived from the market pricing information of open-end real estate funds listed on stock exchanges.

Our NAV is not a representation, warranty or guarantee that: (i) we would fully realize our NAV upon a sale of our assets; (ii) shares of our common stock would trade at our per share NAV on a national securities exchange; and (iii) a stockholder would be able to realize the per share NAV if such stockholder attempted to sell his or her shares to a third party.

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The valuations of our real properties as of September 30, 2022, excluding certain newly acquired properties that are currently held at cost which we believe reflects the fair value of such properties, were provided by the Independent Valuation Advisor in accordance with our valuation procedures. Certain key assumptions that were used by the Independent Valuation Advisor in the discounted cash flow analysis are set forth in the following table:

A change in the exit capitalization and discount rates used would impact the calculation of the value of our real property. For example, assuming all other factors remain constant, the changes listed below would result in the following effects on the value of our real properties, excluding certain newly acquired properties that are currently held at cost which we believe reflects the fair value of such properties:

From November 1, 2017 through January 31, 2020, we valued our debt-related investments and real estate-related liabilities generally in accordance with fair value standards under GAAP. Beginning with our valuation for February 29, 2020, our property-level mortgages and corporate-level credit facilities that are intended to be held to maturity (which for fixed rate debt not subject to interest rate hedges may be the date near maturity at which time the debt will be eligible for prepayment at par for purposes herein), including those subject to interest rate hedges, were valued at par (i.e. at their respective outstanding balances). In addition, because we utilize interest rate hedges to stabilize interest payments (i.e. to fix all-in interest rates through interest rate swaps or to limit interest rate exposure through interest rate caps) on individual loans, each loan and associated interest rate hedge is treated as one financial instrument which is valued at par if intended to be held to maturity. This policy of valuing at par applies regardless of whether any given interest rate hedge is considered as an asset or liability for GAAP purposes. Notwithstanding, if we acquire an investment and assume associated in-place debt from the seller that is above or below market, then consistent with how we recognize assumed debt for GAAP purposes when acquiring an asset with pre-existing debt in place, the liabilities used in the determination of our NAV will include the market value of such debt based on market value as of the closing date. The associated premium or discount on such debt as of closing that is reflected in our liabilities will then be amortized through loan maturity. Per our valuation policy, the corresponding investment is valued on an unlevered basis for purposes of determining NAV. Accordingly, all else equal, we would not recognize an immediate gain or loss to our NAV upon acquisition of an investment whereby we assume associated pre-existing debt that is above or below market. As of September 30, 2022, we classified all of our debt as intended to be held to maturity, and our liabilities included mark-to-market adjustments for pre-existing debt that we assumed upon acquisition.

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As of September 30, 2022, we had raised gross proceeds of approximately $1.3 billion from the sale of approximately 95.8 million shares in this offering, including proceeds from our distribution reinvestment plan of approximately $77.6 million. As of September 30, 2022, approximately $3.7 billion in shares remained available for sale pursuant to this offering, including approximately $1.2 billion in shares available for sale through our distribution reinvestment plan. We may reallocate amounts between the primary offering and our distribution reinvestment plan. During the three months ended September 30, 2022, we raised gross proceeds of approximately $564.5 million, including proceeds from our distribution reinvestment plan and the sale of DST Interests. The aggregate dollar amount of shares redeemed during the three months ended September 30, 2022 totaled $65.9 million.

We have declared monthly distributions for each class of our common stock. To date, each class of our common stock has received the same gross distribution per share. Monthly gross distributions were $0.0454 per share for each share class for the month of September 2022 and were paid to all stockholders of record as of the close of business on September 30, 2022. The net distribution per share is calculated as the gross distribution per share less any distribution fees that are payable monthly with respect to Class T shares and Class D shares. Since distribution fees are not paid with respect to Class I shares, the net distributions payable with respect to Class I shares are equal to the gross distributions payable with respect to Class I shares. The table below details the net distributions for each class of our common stock for the period presented:

As of September 30, 2022, our leverage ratio was approximately 30.4% (calculated as outstanding principal balance of our borrowings less cash and cash equivalents, divided by the fair value of our real property and our net investment in an unconsolidated joint venture partnership).

As of September 30, 2022, we directly owned and managed a real estate portfolio that included 241 industrial buildings totaling approximately 49.8 million square feet located in 29 markets throughout the U.S., with 422 customers, and was 98.4% occupied (98.7% leased) with a weighted-average remaining lease term (based on square feet) of 4.4 years. The occupied rate reflects the square footage with a paying customer in place. The leased rate includes the occupied square footage and additional square footage with leases in place that have not yet commenced. During the third quarter of 2022, we transacted over 1.7 million square feet of new and renewal leases, and rent growth on these leases averaged 49%. We experienced significantly higher acquisition volume in the first and second quarters of 2022 as compared to the third quarter of 2022 as the industrial property market in general saw lower acquisition activity due to the impact of recent interest rate increases. Industrial market fundamentals remain favorable and management continues to evaluate acquisition opportunities within the industrial market to effectively execute our business strategy.

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The following table sets forth the top ten geographic allocations of our real estate portfolio based on fair value as of September 30, 2022:

The NAV increase was primarily due to continued strong leasing demand and rental rate growth, which was largely offset by expansion in discount rates and capitalization rates from continued increases in interest rates. The following table sets forth the total shareholder returns for the periods ended September 30, 2022:

(1) Performance is measured by total return, which includes income and appreciation (i.e., distributions and changes in NAV) and reinvestment of all distributions (“Total Return”) for the respective time period. Past performance is not a guarantee of future results. Performance data quoted above is historical. Current performance may be higher or lower than the performance data quoted. Actual individual stockholder returns will vary. The returns have been prepared using unaudited data and valuations of the underlying investments in our portfolio, which are estimates of fair value and form the basis for our NAV. Valuations based upon unaudited or estimated reports from the underlying investments may be subject to later adjustments or revisions, may not correspond to realized value and may not accurately reflect the price at which assets could be liquidated on any given day.

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