Exhibit 99.1
GM Financial Automobile Leasing Trust 2026-1
4.240% Exchange Note
Class A-1 3.82100% Asset Backed Notes
Class A-2 3.77% Asset Backed Notes
Class A-3 3.88% Asset Backed Notes
Class A-4 3.98% Asset Backed Notes
Class B 4.12% Asset Backed Notes
Class C 4.23% Asset Backed Notes
Servicer’s Certificate
| Beginning of Period: | 05/01/26 |
| End of Period: | 05/31/26 |
| Number of days in Interest Period (Actual/360): | 33 |
| Number of days in Collection Period: | 31 |
| Report Due Date: | 06/17/26 |
| Distribution Date: | 06/22/26 |
| Transaction Month: | 4 |
| Original Agg. | ||||||||||||
| 2026-1 Designated Pool | Units | Start Date | Closing Date | Securitization Value | ||||||||
| 31,700 | 01/02/2026 | 02/12/2026 | $ | 1,111,814,701 | ||||||||
| Total | 31,700 | $ | 1,111,814,701 | |||||||||
RECONCILIATION OF 2026-1 DESIGNATED POOL AGGREGATE SECURITIZATION VALUE
| {1} | Beginning of period Aggregate Securitization Value | {1} | $ | 1,044,595,114 | ||||||||
| {2} | Reduction in Agg. Securitization Value due to payments | {2} | 9,556,252 | |||||||||
| {3} | Reduction in Agg. Securitization Value due to Defaulted Leases | {3} | 1,277,783 | |||||||||
| {4} | Reduction in Agg. Securitization Value due to early terminations, dealer buyouts, cancellations, repurchases | {4} | 8,856,943 | |||||||||
| {5} | Other adjustments | {5} | 0 | |||||||||
| {6} | Total change in Agg. Securitization Value | {6} | 19,690,978 | |||||||||
| {7} | End of period Aggregate Securitization Value | {7} | $ | 1,024,904,136 | ||||||||
| {8} | Pool Factor | {8} | 92.182999 | % |
RECONCILIATION OF 2026-1 EXCHANGE NOTE
| {9} | Original Exchange Note Balance | {9} | $ | 1,060,000,000 | ||||
| {10} | Beginning of period Exchange Note Balance | {10} | $ | 992,780,413 | ||||
| {11} | Exchange Note Principal Payment Amount | {11} | 19,690,978 | |||||
| {12} | End of period Exchange Note Balance | {12} | $ | 973,089,435 | ||||
| {13} | Note Pool Factor | {13} | 91.800890 | % |
1
RECONCILIATION OF THE ASSET BACKED NOTES
| Class A-1 | Class A-2 | Class A-3 | Class A-4 | |||||||||||||||||
| {14} | Original Note Balance | {14} | $ | 139,860,000 | $ | 352,120,000 | $ | 352,120,000 | $ | 61,500,000 | ||||||||||
| {15} | Beginning of period Note Balance | {15} | $ | 67,074,570 | $ | 352,120,000 | $ | 352,120,000 | $ | 61,500,000 | ||||||||||
| {16} | Noteholders’ Principal Distributable Amount | {16} | 19,690,978 | 0 | 0 | 0 | ||||||||||||||
| {17} | Noteholders’ Accelerated Principal Amount | {17} | 0 | 0 | 0 | 0 | ||||||||||||||
| {18} | Aggregate Principal Parity Amount | {18} | 0 | 0 | 0 | 0 | ||||||||||||||
| {19} | Matured Principal Shortfall | {19} | 0 | 0 | 0 | 0 | ||||||||||||||
| {20} | End of period Note Balance | {20} | $ | 47,383,592 | $ | 352,120,000 | $ | 352,120,000 | $ | 61,500,000 | ||||||||||
| {21} | Note Pool Factor | {21} | 33.879302 | % | 100.000000 | % | 100.0000000 | % | 100.000000 | % | ||||||||||
| Class B | Class C | TOTAL | ||||||||||||||
| {22} | Original Note Balance | {22} | $ | 49,460,000 | $ | 45,580,000 | $ | 1,000,640,000 | ||||||||
| {23} | Beginning of period Note Balance | {23} | $ | 49,460,000 | $ | 45,580,000 | $ | 927,854,570 | ||||||||
| {24} | Noteholders’ Principal Distributable Amount | {24} | 0 | 0 | 19,690,978 | |||||||||||
| {25} | Noteholders’ Accelerated Principal Amount | {25} | 0 | 0 | 0 | |||||||||||
| {26} | Aggregate Principal Parity Amount | {26} | 0 | 0 | 0 | |||||||||||
| {27} | Matured Principal Shortfall | {27} | 0 | 0 | 0 | |||||||||||
| {28} | End of period Note Balance | {28} | $ | 49,460,000 | $ | 45,580,000 | $ | 908,163,592 | ||||||||
| {29} | Note Pool Factor | {29} | 100.000000 | % | 100.000000 | % | 90.758274 | % | ||||||||
EXCHANGE NOTE MONTHLY PRINCIPAL PAYMENT AND INTEREST CALCULATIONS
| Principal payment calculation: | ||||||||||||
| {30} | Beginning of period Designated Pool Balance | {30} | $ | 1,044,595,114 | ||||||||
| {31} | Ending Designated Pool Balance | {31} | 1,024,904,136 | |||||||||
| {32} | Unpaid prior Exchange Note Principal Payment Amount | {32} | 0 | |||||||||
| {33} | Sum of {31} + {32} | {33} | 1,024,904,136 | |||||||||
| {34} | Exchange Note Principal Payment Amount {30} - {33} | {34} | $ | 19,690,978 | ||||||||
| Interest calculation: | ||||||||||||||||||||||
| Beg Note Balance | Interest Carryover | Interest Rate | Days | Days Basis | Interest | |||||||||||||||||
| {35} | $ | 992,780,413 | $ | 0 | 4.240 | % | 30 | 30/360 | $ | 3,507,825 | ||||||||||||
2
RECONCILIATION OF EXCHANGE NOTE COLLECTION ACCOUNT
| Additions: | ||||||||||||
| {36} | 2026-1 Designated Pool Collections (net of Liquidation Proceeds and fees) | {36} | $ | 17,238,732 | ||||||||
| {37} | Net Liquidation Proceeds collected during period | {37} | 11,226,032 | |||||||||
| {38} | Investment Earnings | {38} | 87,035 | |||||||||
| {39} | Investment Earnings - transferred to Indenture Note Collection Account | {39} | (87,035 | ) | ||||||||
| {40} | Deposit from Servicer | {40} | 0 | |||||||||
| {41} | Total Additions: | {41} | 28,464,764 | |||||||||
| Distributions: | ||||||||||||
| {42} | To the Servicer, Designated Pool Servicing Fee | {42} | 870,496 | |||||||||
| {43} | To the 2026-1 Exchange Noteholder, the Exchange Note Interest Payment Amount | {43} | 3,507,825 | |||||||||
| {44} | To the 2026-1 Exchange Noteholder, the Exchange Note Principal Payment Amount | {44} | 19,690,978 | |||||||||
| {45} | To the 2026-1 Exchange Noteholder, any funds available to pay obligations pursuant to Indenture Section 8.3 (a)(i) through (xiv) | {45} | 0 | |||||||||
| {46} | To the 2026-1 Exchange Noteholder, all remaining funds to be applied as Excess Exchange Note Payments | {46} | 4,395,465 | |||||||||
| {47} | Total Distributions: | {47} | $ | 28,464,764 | ||||||||
NOTEHOLDERS’ MONTHLY PRINCIPAL PAYMENT AND INTEREST CALCULATIONS
| Noteholders’ Principal Distributable calculation: | ||||||||||||||||||||
| {48} | Beginning Agg. Securitization Value | {48} | $ | 1,044,595,114 | ||||||||||||||||
| {49} | Ending Agg. Securitization Value | {49} | 1,024,904,136 | |||||||||||||||||
| {50} | Principal Distributable Amount {48} - {49} | {50} | 19,690,978 | |||||||||||||||||
| {51} | Noteholders’ Principal Carryover Amount | {51} | 0 | |||||||||||||||||
| {52} | Principal Distributable Amount + Noteholders’ Principal Carryover Amount | {52} | 19,690,978 | |||||||||||||||||
| {53} | Amount required to reduce Outstanding Amount after giving effect to distributions made pursuant to Indenture Section 8.3 (a) (i) through (x) to the Required Pro Forma Note Balance | {53} | 19,690,978 | |||||||||||||||||
| {54} | Noteholders’ Principal Distributable Amount Lesser of {52} and {53} | {54} | $ | 19,690,978 | ||||||||||||||||
| Noteholders’ Interest Distributable calculation: | ||||||||||||||||||||||
| Class | Beg Note Balance | Interest Carryover | Interest Rate | Days | Days Basis | Interest | ||||||||||||||||
| {55} | Class A-1 | $ | 67,074,570 | $ | 0 | 3.82100 | % | 33 | Actual/360 | $ | 234,935 | |||||||||||
| {56} | Class A-2 | $ | 352,120,000 | 0 | 3.77 | % | 30 | 30/360 | 1,106,244 | |||||||||||||
| {57} | Class A-3 | $ | 352,120,000 | 0 | 3.88 | % | 30 | 30/360 | 1,138,522 | |||||||||||||
| {58} | Class A-4 | $ | 61,500,000 | 0 | 3.98 | % | 30 | 30/360 | 203,975 | |||||||||||||
| {59} | Class B | $ | 49,460,000 | 0 | 4.12 | % | 30 | 30/360 | 169,813 | |||||||||||||
| {60} | Class C | $ | 45,580,000 | 0 | 4.23 | % | 30 | 30/360 | 160,670 | |||||||||||||
3
RECONCILIATION OF INDENTURE COLLECTION ACCOUNT
| Available Funds: | ||||||||||||
| {61} | 2026-1 Exchange Note Collections | {61} | $ | 27,594,268 | ||||||||
| {62} | Investment Earnings | {62} | 0 | |||||||||
| {63} | Investment Earnings - transferred from Exchange Note Collection Account | {63} | 87,035 | |||||||||
| {64} | Investment Earnings - and amounts released from Reserve Account pursuant to Section 2.14(b)(ii) of Servicing Supplement | {64} | 8,391 | |||||||||
| {65} | Optional Purchase Price | {65} | 0 | |||||||||
| {66} | Indenture Section 5.4 disposition of Collateral | {66} | 0 | |||||||||
| {67} | Available Funds: | {67} | 27,689,694 | |||||||||
| {68} | Reserve Account Withdrawal Amount | {68} | 0 | |||||||||
| {69} | Total Distributable Funds: | {69} | 27,689,694 | |||||||||
| Distributions: | ||||||||||||
| {70} | To the Successor Servicer, unpaid transition expenses, pro rata | {70} | 0 | |||||||||
| {71} | To the Indenture Trustee, any accrued and unpaid fees & expenses, pro rata | {71} | 417 | |||||||||
| {72} | To the Issuer Owner Trustee, any accrued and unpaid fees & expenses, pro rata | {72} | 250 | |||||||||
| {73} | To the Asset Representations Reviewer, any accrued and unpaid fees & expenses, pro rata | {73} | 0 | |||||||||
| {74} | Class A-1 Noteholders’ Interest Distributable Amount pari passu | {74} | 234,935 | |||||||||
| {75} | Class A-2 Noteholders’ Interest Distributable Amount pari passu | {75} | 1,106,244 | |||||||||
| {76} | Class A-3 Noteholders’ Interest Distributable Amount pari passu | {76} | 1,138,522 | |||||||||
| {77} | Class A-4 Noteholders’ Interest Distributable Amount pari passu | {77} | 203,975 | |||||||||
| {78} | Class A Noteholders’ Principal Parity Amount or Matured Principal Shortfall | {78} | 0 | |||||||||
| {79} | Class B Noteholders’ Interest Distributable Amount | {79} | 169,813 | |||||||||
| {80} | Class B Noteholders’ Principal Parity Amount or Matured Principal Shortfall | {80} | 0 | |||||||||
| {81} | Class C Noteholders’ Interest Distributable Amount | {81} | 160,670 | |||||||||
| {82} | Class C Noteholders’ Principal Parity Amount or Matured Principal Shortfall | {82} | 0 | |||||||||
| {83} | Noteholders’ Principal Distributable Amount | {83} | 19,690,978 | |||||||||
| {84} | To the Reserve Account, the Reserve Account Required Amount | {84} | 0 | |||||||||
| {85} | To the Noteholders, the Accelerated Principal Amount (as calculated below) | {85} | 0 | |||||||||
| {86} | To the Successor Servicer, any amounts in excess of the caps set forth, pro rata | {86} | 0 | |||||||||
| {87} | To the Indenture Trustee, any amounts in excess of the caps set forth, pro rata | {87} | 0 | |||||||||
| {88} | To the Asset Representations Reviewer, any amounts in excess of the caps set forth, pro rata | {88} | 0 | |||||||||
| {89} | To the Issuer Owner Trustee, any amounts in excess of the caps set forth, pro rata | {89} | 0 | |||||||||
| {90} | To the Issuer Trust Certificateholders, the aggregate amount remaining | {90} | 4,983,890 | |||||||||
| {91} | Total Distributions: | {91} | $ | 27,689,694 | ||||||||
4
PRINCIPAL PARITY AMOUNT CALCULATION
| Class | (X) Cumulative Note Balance | (Y) Aggregate Securitization Value | (I) Excess of (X) - (Y) | (II) Total Available Funds in Indenture Collection Account | Lesser of (I) or (II) | |||||||||||||||||
| {92} | Class A | $ | 832,814,570 | $ | 1,024,904,136 | $ | 0 | $ | 25,005,351 | $ | 0 | |||||||||||
| {93} | Class B | 882,274,570 | 1,024,904,136 | 0 | 24,835,538 | 0 | ||||||||||||||||
| {94} | Class C | 927,854,570 | 1,024,904,136 | 0 | 24,674,868 | 0 | ||||||||||||||||
ACCELERATED PRINCIPAL AMOUNT CALCULATION
| {95} | Excess Total Available Funds | {95} | $ | 4,983,890 | ||||||||||||||||
| {96} | Beginning Note Balance | {96} | 927,854,570 | |||||||||||||||||
| {97} | Principal payments through Indenture Section 8.3 (a) (i) through (xii) | {97} | 19,690,978 | |||||||||||||||||
| {98} | Pro-Forma Note Balance | {98} | 908,163,592 | |||||||||||||||||
| {99} | Ending Aggregate Securitization Value | {99} | 1,024,904,136 | |||||||||||||||||
| {100} | 10.5% of Aggregate Securitization Value as of Cutoff ($116,740,544) | {100} | 116,740,544 | |||||||||||||||||
| {101} | Required Pro Forma Note Balance {99} - {100} | {101} | 908,163,592 | |||||||||||||||||
| {102} | Excess of Pro Forma Balance minus Required Pro Forma Balance {98} - {101} | {102} | 0 | |||||||||||||||||
| {103} | Lesser of Excess Total Available Funds and Excess of Pro Forma Note Balance | {103} | $ | 0 |
OVERCOLLATERALIZATION CALCULATIONS
| Exchange Note: | ||||||||||||
| {104} | Ending Aggregate Securitization Value | {104} | $ | 1,024,904,136 | ||||||||
| {105} | End of Period Note Balance | {105} | 973,089,435 | |||||||||
| {106} | Overcollateralization | {106} | 51,814,701 | |||||||||
| {107} | Overcollateralization % | {107} | 5.06 | % | ||||||||
| Asset Backed Notes: | ||||||||||||
| {108} | Ending Aggregate Securitization Value | {108} | 1,024,904,136 | |||||||||
| {109} | End of Period Note Balance | {109} | 908,163,592 | |||||||||
| {110} | Overcollateralization | {110} | 116,740,544 | |||||||||
| {111} | Overcollateralization % | {111} | 11.39 | % | ||||||||
5
RECONCILIATION OF 2026-1 CASH RESERVE ACCOUNT
| {112} | Specified Reserve Balance | {112} | $ | 2,779,537 | ||||||||
| {113} | Beginning of Period Reserve Account balance | {113} | $ | 2,779,537 | ||||||||
| {114} | Investment Earnings | {114} | 8,391 | |||||||||
| {115} | From the Indenture Collection Account, the Reserve Account Required Amount | {115} | 0 | |||||||||
| {116} | To the Indenture Collection Account, the Reserve Account Withdrawal Amount | {116} | 0 | |||||||||
| {117} | Total Reserve balance available: | {117} | 2,787,928 | |||||||||
| {118} | Specified Reserve Balance | {118} | 2,779,537 | |||||||||
| {119} | Release Excess Cash to Indenture Collection Available Funds | {119} | 8,391 | |||||||||
| {120} | End of period Reserve Account balance | {120} | $ | 2,779,537 |
ASSET REPRESENTATIONS REVIEW DELINQUENCY TRIGGER
| Dollars | Percentage | |||||||||||
| {121} | Receivables with Scheduled Payment delinquent 61 days or more | {121} | $ | 619,974 | 0.06 | % | ||||||
| {122} | Compliance (Trigger Violation is a Delinquency Rate Greater Than 1.40%) | {122} | Yes | |||||||||
| By: | /s/ Randal L. Willis | |
| Name: | Randal L. Willis | |
| Title: | Senior Vice President, Securitization & Conduit Reporting | |
| Date: | June 16, 2026 |
6
GM Financial
GMALT 2026-1
Supplemental Monthly Data
May 31, 2026
| Aggregate Securitization Value | Residual Value | |||||||
| Beginning of Period | $ | 1,044,595,114 | $ | 836,605,341 | ||||
| Change | (19,690,978 | ) | (8,239,179 | ) | ||||
| End of Period | $ | 1,024,904,136 | $ | 828,366,162 | ||||
| Residual Value as % of Agg. Securitization Value | 80.82 | % | ||||||
Delinquency
| Leases with scheduled payment delinquent | Number of Leases | Agg. Securitization Value | Percentage(1) | |||||||||
| 0 - 30 days | 30,497 | 1,021,557,420 | 99.67 | % | ||||||||
| 31 - 60 days | 69 | 2,726,742 | 0.27 | % | ||||||||
| 61 - 90 days | 12 | 505,380 | 0.05 | % | ||||||||
| 91 - 120 days | 3 | 114,594 | 0.01 | % | ||||||||
| Total | 30,581 | 1,024,904,136 | 100.00 | % | ||||||||
Lease Terminations
| Current Period | Cumulative | |||||||||||||||
| Number of Leases | Agg. Securitization Value | Number of Leases | Agg. Securitization Value | |||||||||||||
| Retained vehicles by lessee | ||||||||||||||||
| Early terminations | 243 | 8,131,113 | 859 | 30,904,908 | ||||||||||||
| Standard terminations | 0 | 0 | 0 | 0 | ||||||||||||
| Total retained by lessee | 243 | 8,131,113 | 859 | 30,904,908 | ||||||||||||
| Returned Vehicles | ||||||||||||||||
| Early terminations | 25 | 725,830 | 63 | 1,812,922 | ||||||||||||
| Standard terminations | 0 | 0 | 0 | 0 | ||||||||||||
| Total returned to dealer | 25 | 725,830 | 63 | 1,812,922 | ||||||||||||
| Charged off leases / Repossessed vehicles | 36 | 1,277,783 | 197 | 6,872,180 | ||||||||||||
| Repurchases | 0 | 0 | 0 | 0 | ||||||||||||
| Other | 0 | 0 | 0 | 0 | ||||||||||||
| Total terminations | 304 | 10,134,726 | 1,119 | 39,590,010 | ||||||||||||
Lease Extensions/Deferments
| Current Period | ||||||||||||
| Number of Leases | Agg. Securitization Value | Percentage | ||||||||||
| Term Extensions | 0 | 0 | 0.00 | % | ||||||||
| Deferments | 5 | 279,636 | 0.03 | % | ||||||||
7
Net Credit (Gain) Loss
| Current Period | Cumulative | |||||||
| Agg. Securitized Value of early term defaults | 1,277,783 | 6,872,180 | ||||||
| less: Sales proceeds | 1,260,338 | 5,677,664 | ||||||
| less: Excess wear and excess mileage received | 588 | 724 | ||||||
| less: Other amounts received | 0 | 0 | ||||||
| Net Credit (Gain) Loss | 16,857 | 1,193,792 | ||||||
Residual (Gain) Loss on Returned Vehicles
| Agg. Securitized Value of returned vehicles sold by Servicer | 720,637 | 1,767,885 | ||||||
| add: Reimbursement of outstanding residual advance | N/A | N/A | ||||||
| less: Sales proceeds | 844,003 | 2,106,324 | ||||||
| less: Excess wear and excess mileage received | 811 | 3,780 | ||||||
| less: Other recovery amounts | 0 | 0 | ||||||
| Residual (Gain) Loss | (124,177 | ) | (342,219 | ) |
| Current Period | Prev. Month | |||||||
| Prepay Speed | 0.8207 | % | 0.7431 | % | ||||
| Return Rate based on Scheduled to Terminate(2) | 0.0000 | % | 0.0000 | % | ||||
| Return Rate based on Terminated Leases(3) | 8.2237 | % | 6.4394 | % | ||||
| (1) | Percentages may not add to 100% due to rounding. |
| (2) | Percentage of total number of vehicles returned to dealer over number of vehicles scheduled to terminate per month. |
| (3) | Percentage of total number of vehicles returned to dealer over number of vehicles terminated per month. |
8