Exhibit 99.1

McDermott Will & Emery

340 Madison Ave.

New York, NY 10173-1922

Tel: (212) 547-5429

Fax: (212) 547-5444

Kristin K. Going

E-mail: kgoing@mwe.com

Attorney for the Motors Liquidation Company GUC Trust

UNITED STATES BANKRUPTCY COURT

SOUTHERN DISTRICT OF NEW YORK

MOTORS LIQUIDATION COMPANY GUC TRUST

QUARTERLY GUC TRUST REPORTS AS OF JUNE 30, 2020

The Motors Liquidation Company GUC Trust (the “GUC Trust”), by its undersigned counsel, pursuant to the Second Amended and Restated Motors Liquidation Company GUC Trust Agreement dated July 30, 2015, by and between the parties thereto (the “GUC Trust Agreement”) and in accordance with Paragraph 31 of the order of this Court dated March 29, 2011 confirming the Debtors’ Second Amended Joint Chapter 11 Plan of liquidation dated March 18, 2011 of Motors Liquidation Company and its affiliated post-effective date debtors (the “Confirmation Order”), hereby files the following for the most recently ended fiscal quarter of the GUC Trust.

Reporting required under Section 6.2(c)(i) of the GUC Trust Agreement for the fiscal quarter ended June 30, 2020 is annexed hereto as Exhibit A (the “6.2(c) Report”).

The quarterly variance report as described in the third sentence of Section 6.4 of the GUC Trust Agreement for the fiscal quarter ended June 30, 2020, in accordance with the Order Authorizing the GUC Trust Administrator to Liquidate New GM Securities for the Purpose of Funding Fees, Costs and Expenses of the GUC Trust and the Avoidance Action Trust, dated March 8, 2012, is annexed hereto as Exhibit B (the “Budget Variance Report”).

The 6.2(c) Report is not intended to constitute, and should not be construed as, investment advice. The 6.2(c) Report has been provided to comply with the GUC Trust Agreement and Confirmation Order and is for informational purposes only and may not be relied upon to evaluate the merits of investing in any securities or interests referred to herein.

The GUC Trust has no officers, directors or employees. The GUC Trust and Wilmington Trust Company, solely in its capacity as trustee and trust administrator (the “GUC Trust Administrator”), rely solely on receiving accurate information, reports and other representations from GUC Trust professionals and other service providers to the GUC Trust. In submitting the GUC Trust Reports and executing any related documentation on behalf of the GUC Trust, the GUC Trust Administrator has relied upon the accuracy of such reports, information and representations.

Dated: New York, New York

            July 30, 2020

EXHIBIT A

Motors Liquidation Company GUC Trust

Claims and Distribution Summary

Motors Liquidation Company GUC Trust

Claims and Distribution Summary

Motors Liquidation Company GUC Trust

Notes to Claims and Distribution Summary – Section 6.2(c) Report

June 30, 2020

During the quarter ended March 31, 2019, no Unresolved Term Loan Avoidance Action Claims were allowed, and thus the GUC Trust was not required to distribute any assets to holders of such claims. In addition, because the amount of Excess GUC Trust Distributable Assets did not exceed the Distribution Threshold for the quarter ended March 31, 2019, no distribution to holders of Units was made in respect of such quarter.

During the quarter ended June 30, 2019, no Unresolved Term Loan Avoidance Action Claims were allowed, and thus the GUC Trust was not required to distribute any assets to holders of such claims. In addition, because the amount of Excess GUC Trust Distributable Assets did not exceed the Distribution Threshold for the quarter ended June 30, 2019, no distribution to holders of Units was made in respect of such quarter.

During the quarter ended September 30, 2019, certain Unresolved Term Loan Avoidance Action Claims were allowed, and thus the GUC Trust was required to make a distribution of $68,471,118 to holders of such claims. As of September 30, 2019, there were no remaining Unresolved Term Loan Avoidance Claims or Disputed General Unsecured Claims. In addition, as of September 30, 2019, the amount of Excess GUC Trust Distributable Assets exceeded the Distribution Threshold, primarily as a result of the release of distributable assets of the GUC Trust that were previously set aside in respect of Unresolved Term Loan Avoidance Action Claims. Due to the uncertainty regarding potential alleged Disputed General Unsecured Claims related to the GM Recall matter, and the then pending Motion of Wilmington Trust Company, as GUC Trust Administrator, For An Order (A) Authorizing the Expedited Payment of Excess GUC Distributable Assets Pursuant to Section 5.4 of the GUC Trust Agreement, and (B) Approving Such Distribution as an Appropriate Exercise of the GUC Trust Administrator’s Rights, Powers, and/or Privileges Pursuant to Section 8.1(e) of the GUC Trust Agreement (the “Excess Distribution Motion”), the GUC Trust did not make a distribution to holders of Units in respect of such quarter.

As of December 31, 2019, the amount of Excess GUC Trust Distributable Assets exceeded the Distribution Threshold. Due to the uncertainty regarding potential alleged Disputed General Unsecured Claims related to the GM Recall matter, and the then pending Excess Distribution Motion, the GUC Trust did not make a distribution to holders of Units in respect of such quarter.

As of March 31, 2020, the amount of Excess GUC Trust Distributable Assets exceeded the Distribution Threshold. The GUC Trust made a distribution of $300,000,000 to holders of Units on May 28, 2020 pursuant to a settlement agreement related to the GM recall matter that was executed on March 27, 2020 and amended on May 1, 2020.

As of June 30, 2020, the amount of Excess GUC Trust Distributable Assets did not exceed the Distribution Threshold. As a result, no distribution to holders of Units is required to be made in respect of the quarter ended June 30, 2020.

1

Motors Liquidation Company GUC Trust

Notes to Claims and Distribution Summary – Section 6.2(c) Report

June 30, 2020

On June 3, 2015, the GUC Trust Administrator filed a motion (the “Liquidation Motion”) with the Bankruptcy Court seeking an order authorizing the GUC Trust Administrator to exercise and/or liquidate the GUC Trust’s holdings of New GM Warrants and New GM Common Stock. On July 2, 2015, the Bankruptcy Court entered an order granting the relief requested in the Liquidation Motion (the “Liquidation Order”). Following entry of the Liquidation Order, and in compliance therewith, the GUC Trust Administrator exercised all of the New GM Warrants then held by the GUC Trust using a cashless exercise feature, and then liquidated all of its holdings of New GM Common Stock (including the proceeds of the exercised New GM Warrants) for cash (the proceeds thereof “GUC Trust Cash”).

As of the quarter ended June 30, 2020, but prior to current quarter activity and post-closing adjustments, the GUC Trust’s Distributable Assets consisted solely of $49,444,879 in cash and marketable securities ($48,071,917 which represents the proceeds of the liquidated New GM Securities that were categorized as GUC Trust Distributable Assets, and $1,372,962 which represents Dividend Assets).

The following table summarizes the changes in the cash and marketable securities that comprise the GUC Trust’s “Distributable Assets as of June 30, 2020 (prior to current quarter activity)” to the “Excess GUC Trust Distributable Assets including current quarter activity and post-closing adjustments.”

2

Motors Liquidation Company GUC Trust

Notes to Claims and Distribution Summary – Section 6.2(c) Report

June 30, 2020

Units are issued at a ratio of one Unit for each $1,000 in amount of allowed general unsecured claims. Units in respect of general unsecured claims allowed as of the Initial Distribution were not issued until after the Effective Date. Hence, for purposes of this presentation only, Units outstanding as of the Effective Date are deemed to be zero. The 32,086,501 Units outstanding as of June 30, 2020 correlate to the $32.09 billion in allowed claims as of June 30, 2020. The Number of Units outstanding as of June 30, 2020 does not directly correspond to allowed claims as of June 30, 2020 on a 1 to 1,000 basis because 69 additional Units were issued due to rounding.

In addition to the initial funding of the Reporting and Transfer Costs as described above, the GUC Trust Agreement (together with the Liquidation Order) affords the GUC Trust Administrator, with the approval of the GUC Trust Monitor, the discretion and authority to set aside from distribution GUC Trust Cash (including Dividend Assets) in amounts sufficient to satisfy (i) any current or projected fees, costs and expenses (including certain tax obligations and administrative costs) of the GUC Trust (the “Wind-Down Costs”) that were not

3

Motors Liquidation Company GUC Trust

Notes to Claims and Distribution Summary – Section 6.2(c) Report

June 30, 2020

budgeted or exceed the amounts budgeted for use from the funds contributed by MLC on the Effective Date of the Plan for purposes of satisfying such Wind-Down Costs, (ii) any current or projected Reporting and Transfer Costs that exceed the then currently available funds, or (iii) any current or projected income tax liabilities of the GUC Trust arising from the disposition of New GM Securities (“Taxes on Distribution”). This process is not related to, and is separate from, the process of recognizing any current and deferred income tax liabilities, as well as reserves for expected costs of liquidation in the Statement of Net Assets in Liquidation, as a matter of financial reporting. Such liabilities and reserves must be determined in accordance with generally accepted accounting principles applicable to the GUC Trust. By contrast, the estimates of projected costs and potential liabilities for which the GUC Trust may set aside GUC Trust Cash (including Dividend Assets) are generally made on a more conservative (i.e., more inclusive) basis over the duration of the GUC Trust and include contingencies and amounts of any potential income tax liabilities that are not permitted to be recognized under applicable accounting standards. The GUC Trust Administrator may use GUC Trust Cash (including Dividend Assets) that has been set aside from distribution to fund (with the required approval of the Bankruptcy Court) the current or projected Wind-Down Costs or Reporting and Transfer Costs of the GUC Trust and (with the required approval of the GUC Trust Monitor) any current and potential Taxes on Distribution.

Beginning in the fiscal quarter ended December 2011, the GUC Trust Administrator set aside from distribution, in accordance with Sections 6.1(b), 6.1(c), and 6.1(d) of the GUC Trust Agreement and with the approval of the GUC Trust Monitor, New GM Securities and/or GUC Trust Cash, as applicable, in amounts that the GUC Trust Administrator determined was necessary to satisfy then current and projected Wind-Down Costs and Reporting and Transfer Costs and potential Taxes on Distribution of the GUC Trust. Because the GUC Trust Administrator reevaluated (and continues to reevaluate) the projected Wind-Down Costs and Reporting and Transfer Costs and the potential Taxes on Distribution of the GUC Trust on a quarterly basis, the amount of set aside GUC Trust Cash (or, when applicable in prior quarters, New GM Securities) necessarily fluctuates over time.

While the GUC Trust has employed various methodologies for calculating the set asides associated with Wind-Down Costs and Reporting and Transfer Costs (the “Administrative Costs Set Aside Methodology”) and potential Taxes on Distribution (the “Taxes on Distribution Set Aside Methodology”), during the periods presented in the accompanying section 6.2(c) Report such set asides were calculated in the following manner (for further information on prior periods, please see the prior section 6.2(c) Reports available at the Motors Liquidation Company GUC Trust website at https://www.mlcguctrust.com/ ):

4

Motors Liquidation Company GUC Trust

Notes to Claims and Distribution Summary – Section 6.2(c) Report

June 30, 2020

In March 2012, December 2012, and January 2015, the GUC Trust Administrator sought and received authority from the Bankruptcy Court to liquidate set aside New GM Securities (and use associated Dividend Assets) for the purposes of funding then current and projected Wind-Down Costs and Reporting and Transfer Costs for the calendar years 2011 through 2015, as well as certain fees, costs and expenses of the Avoidance Action Trust (“Avoidance Action Trust Administrative Costs”) estimated for the calendar years 2012, 2013 and 2014 (collectively, the “Initial Cost Funding Orders”). In the aggregate, pursuant to the Initial Cost Funding Orders, the GUC Trust liquidated (i) 640,855 shares of New GM Common Stock and 582,580 warrants of each class of warrant for the aggregate proceeds of $37,670,068 (including $123,160 of associated Dividend Assets) in respect of Wind-Down Costs; (ii) 315,764 shares of New GM Common Stock and 287,051 warrants of each class of warrant for the aggregate proceeds of $18,354,464 (including $46,728 of associated Dividend Assets) in respect of Reporting and Transfer Costs; and (iii) 269,422 shares of New GM Common Stock and 244,929 warrants of each class of warrant for the aggregate proceeds of $13,715,264 in respect of Avoidance Action Trust Administrative Costs (which amount was subsequently transferred to the Avoidance Action Trust). Copies of the Initial Cost Funding Orders are available at the Motors Liquidation Company GUC Trust website at https://www.mlcguctrust.com/.

On November 17, 2015, the GUC Trust Administrator filed a motion seeking authority from the Bankruptcy Court to reallocate certain set aside GUC Trust Cash for use in funding projected Wind-Down Costs and Reporting and Transfer Costs for the calendar year 2016 (the “2016 Reallocation Motion”). In the aggregate, the 2016 Reallocation Motion sought authority to reallocate $7,518,800 in GUC Trust Cash for the purposes of satisfying projected Wind-Down Costs and $4,528,000 for the purposes of satisfying projected Reporting and Transfer Costs. On December 7, 2015, the Bankruptcy Court entered an order authorizing the 2016 Reallocation Motion (the “2016 Reallocation Order”). Copies of the 2016 Reallocation Motion and 2016 Reallocation Order are available at the Motors Liquidation Company GUC Trust website at https://www.mlcguctrust.com/.

On January 20, 2017, the GUC Trust Administrator filed a motion seeking authority from the Bankruptcy Court to reallocate certain set aside GUC Trust Cash for use in funding projected Wind-Down Costs and Reporting and Transfer Costs for the calendar year 2017 (the “2017 Reallocation Motion”). In the aggregate, the 2017 Reallocation Motion sought authority to reallocate $4,970,600 in GUC Trust Cash for the purposes of satisfying projected Wind-Down Costs and $4,961,400 for the purposes of satisfying projected Reporting and Transfer Costs. On February 21, 2017, the Bankruptcy Court entered an order authorizing the 2017 Reallocation Motion (the “2017 Reallocation Order”). Copies of the 2017 Reallocation Motion and 2017 Reallocation Order are available at the Motors Liquidation Company GUC Trust website at https://www.mlcguctrust.com/.

On February 15, 2018, the GUC Trust Administrator filed a motion seeking authority from the Bankruptcy Court to reallocate certain set aside GUC Trust Cash for use in funding projected Wind-Down Costs and Reporting and Transfer Costs for the calendar year 2018 (the “2018 Reallocation Motion”). In the aggregate, the 2018 Reallocation Motion sought authority to reallocate $9,051,300 in GUC Trust Cash for the purposes of satisfying projected Wind-Down Costs and $4,554,500 for the purposes of satisfying projected Reporting and Transfer Costs. On March 6, 2018, the Bankruptcy Court entered an order authorizing the 2018 Reallocation Motion (the “2018 Reallocation Order”). Copies of the 2018 Reallocation Motion and 2018 Reallocation Order are available at the Motors Liquidation Company GUC Trust website at https://www.mlcguctrust.com/.

5

Motors Liquidation Company GUC Trust

Notes to Claims and Distribution Summary – Section 6.2(c) Report

June 30, 2020

On December 19, 2018, the GUC Trust Administrator filed a motion seeking authority from the Bankruptcy Court to reallocate certain set aside GUC Trust Cash for use in funding projected Wind-Down Costs and Reporting and Transfer Costs for the calendar year 2019 (the “2019 Reallocation Motion”). In the aggregate, the 2019 Reallocation Motion sought authority to reallocate $8,231,500 in GUC Trust Cash for the purposes of satisfying projected Wind-Down Costs and $4,170,000 for the purposes of satisfying projected Reporting and Transfer Costs. On January 23, 2019, the Bankruptcy Court entered an order authorizing the 2019 Reallocation Motion (the “2019 Reallocation Order”). Copies of the 2019 Reallocation Motion and 2019 Reallocation Order are available at the Motors Liquidation Company GUC Trust website at https://www.mlcguctrust.com/.

As of March 31, 2019, the GUC Trust had set aside from distribution $12,366,159 to fund projected Wind-Down Costs and Reporting and Transfer Costs.

As of June 30, 2019, the GUC Trust had set aside from distribution $12,366,207 to fund projected Wind-Down Costs and Reporting and Transfer Costs.

As of September 30, 2019, the GUC Trust had set aside from distribution $75,711,492 to fund projected Wind-Down Costs and Reporting and Transfer Costs.

On December 18, 2019, the GUC Trust Administrator filed a motion seeking authority from the Bankruptcy Court to reallocate certain set aside GUC Trust Cash for use in funding projected Wind-Down Costs and Reporting and Transfer Costs for the calendar year 2020 (the “2020 Reallocation Motion”). In the aggregate, the 2020 Reallocation Motion sought authority to reallocate $6,540,300 in GUC Trust Cash for the purposes of satisfying projected Wind-Down Costs and $4,279,200 for the purposes of satisfying projected Reporting and Transfer Costs. On January 6, 2020, the Bankruptcy Court entered an order authorizing the 2020 Reallocation Motion (the “2020 Reallocation Order”). Copies of the 2020 Reallocation Motion and 2020 Reallocation Order are available at the Motors Liquidation Company GUC Trust website at https://www.mlcguctrust.com/.

As of December 31, 2019, the GUC Trust had set aside from distribution $80,744,113 to fund projected Wind-Down Costs and Reporting and Transfer Costs.

As of March 31, 2020, the GUC Trust had set aside from distribution $41,547,583 to fund projected Wind-Down Costs and Reporting and Transfer Costs.

On March 27, 2020, the GUC Trust Administrator filed a motion seeking authority from the Bankruptcy Court to reallocate certain set aside GUC Trust Cash for use in satisfying settlement consideration pursuant to a settlement agreement related to the GM recall matter that was executed on March 27, 2020 (the “March 27, 2020 Reallocation Motion”). In the aggregate, the March 27, 2020 Reallocation Motion sought authority to reallocate $50,000,000 in GUC Trust Cash for the purposes of satisfying noticing costs of $2,000,000 and a settlement payment of $48,000,000. On April 23, 2020, the Bankruptcy Court entered an order authorizing the March 27, 2020 Reallocation Motion (the “March 27, 2020 Reallocation Order”). Copies of the March 27, 2020 Reallocation Motion and March 27, 2020 Reallocation Order are included as Exhibits 99.1 and 99.2 to the Current Report on Form 8-K filed by the GUC Trust with the SEC on April 24, 2020

During the three months ended June 30, 2020, the amount of GUC Trust Cash set aside from distribution to fund projected Wind-Down Costs and Reporting and Transfer Costs of the GUC Trust decreased by $3,944,000 from the cash set aside as of March 31, 2020, with the total amount of such set aside cash aggregating $37,603,583 as of June 30, 2020. Such overall decrease was primarily associated with a reallocation of GUC Trust Cash of $2,000,000, along with a reduction in projected Wind-Down costs over the estimated remaining liquidation period for holdback purposes. As of June 30, 2020, the GUC Trust had not reallocated $48,000,000 of GUC Trust Cash approved in the March 27, 2020 Reallocation Order described above.

During all periods presented in the accompanying section 6.2(c) Report, other than for the quarters ended March 31, 2019 and June 30, 2019, the amount of GUC Trust Cash (including Dividend Assets) set aside from distribution to fund projected Wind-Down Costs, Reporting and Transfer Costs and potential Taxes on Distribution was sufficient to satisfy such projected costs and potential

6

Motors Liquidation Company GUC Trust

Notes to Claims and Distribution Summary – Section 6.2(c) Report

June 30, 2020

taxes as estimated by the GUC Trust in accordance with the above detailed Administrative Costs Set Aside Methodology and the Taxes on Distribution Set Aside Methodology. For the quarter ended March 31, 2019, the set aside for potential Wind-Down Costs and Reporting and Transfer Costs was only $12,366,159, for a net shortfall of $13,273,977 from projected costs. For the quarter ended June 30, 2019, the set aside for potential Wind-Down Costs and Reporting and Transfer Costs was only $12,366,207, for a net shortfall of $68,558,199 from projected costs. Accordingly, as of March 31, 2019 and June 30, 2019, the set aside for potential Wind-Down Costs and Reporting and Transfer Costs was insufficient to satisfy in full the Administrative Costs Set Aside Methodology.

7

Motors Liquidation Company GUC Trust

Notes to Claims and Distribution Summary – Section 6.2(c) Report

June 30, 2020

It is the view of the GUC Trust Administrator, after consultation with the GUC Trust Monitor and Trust Professionals, that the Administrative Costs Set Aside Methodology is a generally conservative methodology for calculating the unfunded projected administrative costs of the GUC Trust. Accordingly, it is the view of the GUC Trust Administrator and GUC Trust Monitor that the cash currently held in the set asides for Wind-Down Costs and Reporting and Transfer Costs would be sufficient to satisfy the administrative and reporting costs of the GUC Trust as of the date of this report. However, there can be no assurance that the cash set aside to fund projected Wind-Down Costs and Reporting and Transfer Costs will be sufficient to fund such costs and liabilities as they are actually incurred. In addition, there can be no assurance that, as a result of future evaluations, additional amounts of cash will not need to be set aside or utilized to fund additional costs and liabilities, beyond those that are currently included in the GUC Trust’s estimates.

Pursuant to the GUC Trust Agreement, Dividend Taxes (like certain other taxes) must be paid by the GUC Trust from the use of Excess GUC Trust Distributable Assets and not from the cash proceeds of the dividend itself. However, the cash dividends received on New GM Common Stock which ultimately comprise Excess GUC Trust Distributable Assets will be distributed, pro rata, to holders of Units when the liquidated proceeds of such New GM Common Stock is included in a distribution of Excess GUC Trust Distributable Assets.

During all periods presented in the accompanying section 6.2(c) Report, the GUC Trust Administrator included in the set aside for Wind-Down Costs an amount of GUC Trust Cash (including Dividend Assets) that would be sufficient upon reallocation, in the GUC Trust Administrator’s estimation, to satisfy Dividend Taxes relating to the then Current Dividends.

8

Motors Liquidation Company GUC Trust

Notes to Claims and Distribution Summary – Section 6.2(c) Report

June 30, 2020

9

MLC GUC Trust

Wind-Down

Actual vs. Approved Budget Report

($ in thousands)