BENCHMARK 2019-B15 MORTGAGE TRUST 8-K

What Happened

• The trust filed an Item 8.01 8-K on April 3, 2026 announcing that Midland Loan Services, a Division of PNC Bank, N.A. was terminated as special servicer for the Essex mortgage loan (an asset of the Benchmark 2019-B15 Mortgage Trust). KeyBank National Association was appointed successor special servicer effective April 3, 2026. The Essex loan is being serviced under the BMARK 2019-B14 pooling and servicing agreement (PSA). An Acknowledgment of Replacement Special Servicer dated April 3, 2026 is attached as Exhibit 20.1 to the filing.

Key Details

• Effective date: April 3, 2026.
• Parties: Midland Loan Services (terminated as special servicer) → KeyBank National Association (appointed successor special servicer).
• Document references: Servicing governed by the BMARK 2019-B14 PSA; Acknowledgment of Replacement Special Servicer filed as Exhibit 20.1.
• Filing signed by Citigroup Commercial Mortgage Securities Inc. (Depositor), /s/ Richard Simpson, President, dated April 3, 2026.

Why It Matters

• The special servicer handles loan enforcement, workouts and foreclosure decisions for troubled or non‑standard commercial mortgage loans. A change in special servicer can affect how the Essex loan is managed going forward.
• The filing provides the appointment and documentation only; it does not state any change to loan payments, cash flows, or a loan default status. Investors should note the servicer change for monitoring loan administration and any future trustee or trust notices.