
Confidential | for discussion purposes only GOLUB CAPITAL DIRECT LENDING UNLEVERED CORPORATION EARNINGS PRESENTATION QUARTER ENDED DECEMBER 31, 2023

2 Such forward-looking statements may include statements preceded by, followed by or that otherwise include the words “may,” “might,” “will,” “intend,” “should,” “could,” “can,” “would,” “expect,” “believe,” “estimate,” “anticipate,” “predict,” “potential,” “plan” or similar words. We have based the forward-looking statements included in this presentation on information available to us on the date of this presentation. Actual results could differ materially from those anticipated in our forward-looking statements and future results could differ materially from historical performance. We undertake no obligation to revise or update any forward-looking statements, whether as a result of new information, future events or otherwise. You are advised to consult any additional disclosures that we make directly to you or through reports that we have filed or in the future file with the Securities and Exchange Commission (“SEC”), including annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K. This presentation contains statistics and other data that have been obtained from or compiled from information made available by third-party service providers. We have not independently verified such statistics or data. In evaluating prior performance information in this presentation, you should remember that past performance is not a guarantee, prediction, or projection of future results, and there can be no assurance that we will achieve similar results in the future. Some of the statements in this presentation constitute forward-looking statements, which relate to future events or our future performance or financial condition. The forward-looking statements contained in this presentation involve risks and uncertainties, including statements as to: our future operating results; our business prospects and the prospects of our portfolio companies, including our and their ability to achieve our respective objectives due to disruptions, including those caused by global health pandemics, such as the COVID-19 pandemic, or other large scale events; the effect of investments that we expect to make and the competition for those investments; completion of a public offering of our securities or other liquidity event; our contractual arrangements and relationships with third parties; actual and potential conflicts of interest with GC Advisors LLC ("GC Advisors"), our investment adviser, and other affiliates of Golub Capital LLC (collectively, "Golub Capital"); the dependence of our future success on the general economy and its effect on the industries in which we invest; the ability of our portfolio companies to achieve their objectives; the use of borrowed money to finance a portion of our investments; the adequacy of our financing sources and working capital; the timing of cash flows, if any, from the operations of our portfolio companies; general economic and political trends and other external factors, changes in political, economic or industry conditions, the interest rate environment or conditions affecting the financial and capital markets that could result in changes to the value of our assets; elevating levels of inflation, and its impact on us, on our portfolio companies and on the industries in which we invest; the ability of GC Advisors to locate suitable investments for us and to monitor and administer our investments; the ability of GC Advisors or its affiliates to attract and retain highly talented professionals; the ability of GC Advisors to continue to effectively manage our business due to disruptions, including those caused by global health pandemics, such as the COVID-19 pandemic, or other large scale events; turmoil in Ukraine and Russia, including sanctions related to such turmoil, and the potential for volatility in energy prices and other supply chain issues and any impact on the industries in which we invest; our ability to qualify and maintain our qualification as a regulated investment company and as a business development company; the impact of information technology systems and systems failures, including data security breaches, data privacy compliance, network disruptions, and cybersecurity attacks; general price and volume fluctuations in the stock markets; the impact on our business of the Dodd-Frank Wall Street Reform and Consumer Protection Act and the rules and regulations issued thereunder and any actions toward repeal thereof; and the effect of changes to tax legislation and our tax position. Disclaimer

3 Summary of Quarterly Results – GDLCU generated an annualized net income return on equity1 of 9.7% during the quarter ended December 31, 2023. – GDLCU has achieved an inception-to-date IRR2 on NAV of 9.3% through December 31, 2023. – For the quarter ended December 31, 2023, we made new investment commitments of $88.4 million in 29 portfolio companies. The fair value of investments as of December 31, 2023 was $176.1 million. Overall, total investments in portfolio companies at fair value increased by $66.2 million or 60.2%. – The annualized investment income yield3 for the three months ended December 31, 2023 was 13.0%, an increase from 12.9% for the three months ended September 30, 2023. – As of December 31, 2023, we had total investor capital subscriptions of $375.0 million and contributed capital of $201.9 million (53.8% called capital ratio). – Strong credit performance; over 99% of the investments in our portfolio at fair value continue to have an Internal Performance Rating of 4 or higher as of December 31, 2023 and there were no portfolio company investments on non-accrual. 1. Return on equity calculations are based on daily weighted average of total net assets during the period presented. 2. Internal rate of return (“IRR”) on net asset value (“NAV”) is calculated at the fund level using beginning of period NAV, capital share issuances during the period, distributions paid or payable during the period, and ending period NAV. Period beginning April 1, 2022 and ending December 31, 2023. The first investment in GDLCU took place on April 1, 2022. These returns do not represent an actual return to any investor in the Company. 3. Investment income yield is calculated as (a) the actual amount earned on earning investments, including interest and fee income, accrued PIK/non-cash dividend income, and amortization of capitalized fees and discounts, divided by (b) the daily average of total earning investments at fair value.

4 Summary of Quarterly Results (cont’d) * Represents an amount less than 1.0%. 1. Per share returns are calculated based on the daily weighted average shares outstanding during the period presented. Due to the significant changes in net assets, net investment income and net income that may occur quarter-to-quarter as a result of Golub Capital Direct Lending Unlevered Corporation (“we”, “us”, “our”, the “Company” or “GDLCU”) commencing operations on April 1, 2022, per share amounts may fluctuate significantly from quarter-to-quarter and quarterly comparisons may not be meaningful. 2. Return on equity calculations are based on daily weighted average of total net assets during the period presented. 3. Quarterly return on equity is calculated as the annualized return on average equity divided by four. Return on equity calculations are based on the daily weighted average of total net assets during the period presented. 4. Junior Debt consists of second lien and subordinated debt. Quarter Ended (Dollar amounts in 000s, except per share data) December 31, 2022 March 31, 2023 June 30, 2023 September 30, 2023 December 31, 2023 Select Financial Data New investment commitments $22,472 $9,498 $6,335 $21,955 $88,388 Fair value of investments $74,703 $84,945 $92,304 $109,905 $176,098 Net income (loss) $1,537 $2,382 $2,323 $2,758 $4,024 Net investment income after tax $1,697 $1,915 $2,048 $2,470 $3,800 Earnings (loss) per weighted average share1 $0.31 $0.41 $0.37 $0.38 $0.36 Net investment income per weighted average share1 $0.34 $0.33 $0.33 $0.34 $0.34 Annualized return on equity – net income2 8.2 % 11.0 % 9.9 % 9.9 % 9.7 % Quarterly return on equity – net income (loss)3 2.1 % 2.8 % 2.5 % 2.5 % 2.4 % Asset Mix of New Originations Senior Secured 1% 0% 0% 4% 7% One Stop 96% 98% 100% 95% 93% Junior Debt4 0%* 0% 0% 1% 0%* Equity 3% 2% 0% 0%* 0%*

5 GDLCU Generated Strong NII and Net Gains, Resulting in 9.7% Annualized Return to Shareholders1 *Represents an amount less than $0.01. 1. Return on equity calculations are based on daily weighted average of total net assets during the period presented. 2. Represents the impact of different share amounts as a result of calculating certain per share data based on weighted average shares outstanding during the period and certain per share data based on the shares outstanding at the end of the period and as of the dividend record date. NAV Per Share Bridge $15.00 $0.34 $(0.35) $(0.02) $0.04 $(0.01) $15.00 September 30, 2023 NAV Net Investment Income Dividends Recorded in December 31, 2023 Quarter Net Realized Gain (Loss) on Investments Net Change in Unrealized Appreciation (Depreciation) on Investments Other Changes in Unrealized Depreciation December 31, 2023 NAV Net Realized & Unrealized Gain: $0.02 2

6 Portfolio Highlights - Portfolio Diversity as of December 31, 2023 Portfolio Composition by Seniority * Junior Debt represents an amount less than 1% 1. Junior Debt is comprised of second lien and subordinated debt. 2. The percentage of fixed rate and floating rate loans is calculated using total debt investments at fair value and excludes equity investments. 3. Based on S&P 2018 industry code. The largest industries represented as a percentage of the portfolio at fair value are labeled. All other industry segments are each below 3%. 1% 0%* 93% 6% Investment Portfolio $176MM | 88 Investments | Average Size 1.1% First Lien Traditional Senior First Lien One Stop Junior Debt1 Equity 99% First Lien Diversification by Obligor Avg Size 1.1% Top 10 Investments 35% Top 25 Investments 67% Remaining 63 Investments 33% Diversification by Industry3Portfolio Composition by Interest Rate Type on Loans2 Floating, 98% Fixed, 2% Software 38% Specialty Retail 10% Diversified Consumer Services 9%Insurance 6% Automobiles 5% Commercial Services and Supplies 4% IT Services 3% Aerospace and Defense 3% 17 industries below 3%

7 Portfolio Highlights - Economic Analysis 1. Investment income yield is calculated as (a) the actual amount earned on earning investments, including interest and fee income, accrued PIK/non-cash dividend income, and amortization of capitalized fees and discounts, divided by (b) the daily average of total earning investments at fair value. 2. Income yield is calculated as (a) the actual amount earned on earning investments, including interest and fee income and accrued PIK/non-cash dividend income but excluding amortization of capitalized fees and discounts, divided by (b) the daily average of total earning investments at fair value. 8.9% 10.5% 11.6% 12.4% 12.9% 13.0% 8.6% 10.2% 11.3% 12.0% 12.6% 12.7% 3.6% 4.6% 4.9% 5.3% 5.4% 5.3% Investment income yield¹ Income yield² 3-Month Secured Overnight Financing Rate ("SOFR") September 30, 2022 December 31, 2022 March 31, 2023 June 30, 2023 September 30, 2023 December 31, 2023 0.0% 1.0% 2.0% 3.0% 4.0% 5.0% 6.0% 7.0% 8.0% 9.0% 10.0% 11.0% 12.0% 13.0% 14.0%

8 Portfolio Highlights - Portfolio Ratings Internal Performance Ratings (% of Portfolio at Fair Value) At Fiscal Year End At Quarter End Rating 2022 2023 December 31, 2023 5 2.3% 0.0% 0.0% 4 97.7% 99.7% 99.9% 3 0.0% 0.3% 0.1% 2 0.0% 0.0% 0.0% 1 0.0% 0.0% 0.0% Grand Total 100.0% 100.0% 100.0% Internal Performance Ratings Definition Rating Definition 5 Borrower is performing above expectations and the trends and risk factors are generally favorable 4 Borrower is generally performing as expected and the risk factors are neutral to favorable 3 Borrower may be out of compliance with debt covenants; however, loan payments are generally not past due 2 Borrower is performing materially below expectations and the loan’s risk has increased materially since origination 1 Borrower is performing substantially below expectations and the loan’s risk has substantially increased since origination – Over 99% of the investments in our portfolio at fair value have an Internal Performance Rating of 4 or higher as of December 31, 2023, and there were no portfolio company investments on non-accrual.

9 Quarterly Statements of Financial Condition As of (Dollar amounts in 000s, except share and per share data) December 31, 2022 March 31, 2023 June 30, 2023 September 30, 2023 December 31, 2023 (unaudited) (unaudited) (unaudited) (audited) (unaudited) Assets Investments, at fair value $74,703 $84,945 $92,304 $109,905 $176,098 Cash, cash equivalents and foreign currencies 4,876 10,502 11,481 30,396 26,042 Other assets 864 963 3,760 1,595 2,979 Total Assets $80,443 $96,410 $107,545 $141,896 $205,119 Liabilities and Net Assets Distribution payable $580 $1,692 $1,683 $1,956 $1,536 Management and incentive fee payable — 47 331 417 626 Other liabilities 427 791 714 964 655 Total Liabilities 1,007 2,530 2,728 3,337 2,817 Total Net Assets 79,436 93,880 104,817 138,559 202,302 Total Liabilities and Net Assets $80,443 $96,410 $107,545 $141,896 $205,119 Net Asset Value per Share $15.00 $15.00 $15.00 $15.00 $15.00 Common shares outstanding 5,295,705 6,258,653 6,987,781 9,237,274 13,486,862

10 Quarterly Operating Results Quarter Ended (Dollar amounts in 000s, except share and per share data) December 31, 2022 March 31, 2023 June 30, 2023 September 30, 2023 December 31, 2023 (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) Investment Income Interest income $1,713 $2,205 $2,588 $3,055 $4,653 Dividend income 10 12 13 17 14 Fee income 4 5 5 7 13 Total Investment Income $1,727 $2,222 $2,606 $3,079 $4,680 Expenses Base management fee, net of waiver $— $— $73 $83 $122 Incentive fee, net of waiver1 — 47 231 277 425 Incentive fee – capital gains — — 27 29 22 Other operating expenses 195 250 227 220 291 Other operating expenses reimbursement waiver2 (195) — — — — Total Expenses — 297 558 609 860 Excise tax 30 10 — — 20 Net Investment Income after tax $1,697 $1,915 $2,048 $2,470 $3,800 Net Gain (Loss) on Investments and Foreign Currency Net realized gain (loss) on investments and foreign currency transactions $9 ($1) ($1) $6 ($210) Net unrealized appreciation (depreciation) on investments and foreign currency transactions (169) 468 276 282 434 Net gain (loss) on investments and foreign currency transactions (160) 467 275 288 224 Net increase/(decrease) in net assets resulting from operations $1,537 $2,382 $2,323 $2,758 $4,024 Per Share Data3 Earnings/(loss) per weighted average share $0.31 $0.41 $0.37 $0.38 $0.36 Net investment income per weighted average share $0.34 $0.33 $0.33 $0.34 $0.34 Distributions declared per share4 $0.30 $0.40 $0.37 $0.37 $0.35 Weighted average common shares outstanding 4,947,000 5,860,405 6,301,927 7,342,320 11,049,598 1. For the quarters ended December 31, 2022 and March 31, 2023, GC Advisors agreed to a waiver of $169,723 and $149,270, respectively, of income incentive fees calculated under the Investment Advisory Agreement. 2. For the quarter ended December 31, 2022, GC Advisors and Golub Capital LLC waived reimbursement of $194,972 for any operating expenses and costs subject to reimbursement by the Company. 3. Except as otherwise noted, per share data is calculated based on the daily weighted average shares outstanding during the period presented. 4. Per share data are based on (i) the total distributions paid for each respective record date during the period presented divided by (ii) the total number of shares outstanding on each respective record date. Please see slide titled, “Common Stock and Distribution Information” included in this presentation for details on the distributions declared during the period.

11 Quarterly Return on Equity Since Inception* * Quarterly return on equity is calculated as the annualized return on average equity divided by four. Return on equity calculations are based on the daily weighted average of total net assets during the period presented. 1. The 9.3% Internal rate of return (“IRR”) on net asset value (“NAV”) is calculated at the fund level using beginning of period NAV, capital share issuances during the period, distributions paid or payable during the period, and ending period NAV. Period beginning April 1, 2022 and ending December 31, 2023. The first investment in GDLCU took place on April 1, 2022. These returns do not represent an actual return to any investor in the Company. 0.4% 1.2% 2.1% 2.8% 2.5% 2.5% 2.4% Jun-22 Sep-22 Dec-22 Mar-23 Jun-23 Sep-23 Dec-23 Avg. 2.0% Investors in GDLCU have achieved a 9.3% IRR on NAV1

12 Common Stock and Distribution Information Distributions Paid and Payable (Dollar amounts in 000s, except share and per share data) Date Declared Record Date Earnings Period Shares Outstanding Payment Date Amount Per Share Total Amount August 5, 2022 October 18, 2022 October 2022 4,571,826.354 December 29, 2022 $0.0980 $447 November 18, 2022 November 21, 2022 November 2022 5,289,257.354 December 29, 2022 0.0964 510 November 18, 2022 December 15, 2022 December 2022 5,290,922.153 March 1, 2023 0.1096 580 Total for Quarter Ended December 31, 2022 $0.3040 $1,537 November 18, 2022 January 17, 2023 January 2023 5,295,704.904 March 22, 2023 $0.1301 $690 February 7, 2023 February 24, 2023 February 2023 6,252,279.571 May 24, 2023 0.1148 718 February 7, 2023 March 17, 2023 March 2023 6,255,174.938 May 24, 2023 0.1558 974 Total for Quarter Ended March 31, 2023 $0.4007 $2,382 February 7, 2023 April 28, 2023 April 2023 6,258,653.053 June 22, 2023 $0.1023 $640 May 5, 2023 May 26, 2023 May 2023 6,267,118.056 August 23, 2023 0.1106 693 May 5, 2023 June 16, 2023 June 2023 6,267,118.056 August 23, 2023 0.1579 990 Total for Quarter Ended June 30, 2023 $0.3708 $2,323 May 5, 2023 July 28, 2023 July 2023 6,987,780.543 September 20, 2023 $0.1147 $802 August 3, 2023 August 30, 2023 August 2023 6,987,780.543 November 22, 2023 0.1218 851 August 3, 2023 September 22, 2023 September 2023 8,112,527.076 November 22, 2023 0.1362 1,105 Total for Quarter Ended September 30, 2023 $0.3727 $2,758 August 3, 2023 October 20, 2023 October 2023 9,237,273.609 December 28, 2023 $0.1143 $1,056 November 17, 2023 November 20, 2023 November 2023 11,487,055.609 December 28, 2023 0.1247 1,432 November 17, 2023 December 15, 2023 December 2023 13,486,861.608 February 21, 2024 0.1139 1,536 Total for Quarter Ended December 31, 2023 $0.3529 $4,024

13 Common Stock and Distribution Information (cont’d) Distributions Declared (Dollar amounts in 000s, except share and per share data) Date Declared Record Date Earnings Period Shares Outstanding Payment Date Amount Per Share Total Amount November 17, 2023 January 19, 2024 January 20241 13,486,861.608 March 20, 2024 TBD TBD February 2, 2024 February 26, 2024 February 20242 TBD May 22, 2024 TBD TBD February 2, 2024 March 15, 2024 March 20243 TBD May 22, 2024 TBD TBD February 2, 2024 April 19, 2024 April 20244 TBD June 19, 2024 TBD TBD 1. On November 17, 2023, our board of directors declared a distribution in an amount (if positive) such that our net asset value as of January 31, 2024 on a pro forma basis after giving effect to the net increase in net assets resulting from operations earned by us (if positive) as determined in accordance with GAAP for the period January 1, 2024 through January 31, 2024 and the payment of this distribution is $15.00 per share. 2. On February 2, 2024, our board of directors declared a distribution in an amount (if positive) such that our net asset value as of February 29, 2024 on a pro forma basis after giving effect to the net increase in net assets resulting from operations earned by us (if positive) as determined in accordance with GAAP for the period February 1, 2024 through February 29, 2024 and the payment of this distribution is $15.00 per share. 3. On February 2, 2024, our board of directors declared a distribution in an amount (if positive) such that our net asset value as of March 31, 2024 on a pro forma basis after giving effect to the net increase in net assets resulting from operations earned by us (if positive) as determined in accordance with GAAP for the period March 1, 2024 through March 31, 2024 and the payment of this distribution is $15.00 per share. 4. On February 2, 2024, our board of directors declared a distribution in an amount (if positive) such that our net asset value as of April 30, 2024 on a pro forma basis after giving effect to the net increase in net assets resulting from operations earned by us (if positive) as determined in accordance with GAAP for the period April 1, 2024 through April 30, 2024 and the payment of this distribution is $15.00 per share.