Benchmark 2020-B17 Mortgage Trust

Tranches, pool and monthly delinquency indicator for Benchmark 2020-B17 Mortgage Trust.

Data as of loan data through September 2026; ratings as held in the dataset at build

Current pool balance: $765.4M (September 2026)
Original pool balance: $943.4M
Loans at issuance: 41
Closing date: 2020-03-24
Weighted average coupon at issuance: 3.70%
Weighted average LTV at issuance: 37.8%
30+ delinquent (latest): 2.42%
Realized stress score: 74.7
Net rating change since issuance: +0.41 notches

Tranches

Class	Original balance	Credit support (computed)	Coupon	CUSIP	Fitch	KBRA	S&P	Moody's	DBRS
A-1	$6.3M	99.31%	1.282% fixed	08162MAU2	PIF	WR	NR	not yet reported	not yet reported
A-2	$188.0M	78.79%	2.211% fixed	08162MAV0	AAA	AAA	AAA (sf)	not yet reported	not yet reported
A-4	$170.0M	60.23%	2.042% fixed	08162MAW8	AAA	AAA	AAA (sf)	not yet reported	not yet reported
A-5	$263.9M	31.41%	2.289% fixed	08162MAX6	AAA	AAA	AAA (sf)	not yet reported	not yet reported
A-S	$105.3M	19.91%	2.583% fixed	08162MBB3	AA-	AAA	A+ (sf)	not yet reported	not yet reported
A-SB	$12.9M	18.50%	2.176% fixed	08162MAY4	AAA	AAA	AAA (sf)	not yet reported	not yet reported
B	$41.2M	14.00%	2.916% fixed	08162MBC1	A-	AA-	NR	not yet reported	not yet reported
C	$37.8M	9.88%	3.371% floating (WAC)	08162MBD9	BBB-	A-	NR	not yet reported	not yet reported
D	$21.8M	7.50%	2.250% fixed	08162MAC2	BB	BBB	NR	not yet reported	not yet reported
E	$16.0M	5.75%	2.250% fixed	08162MAE8	B	B-	NRprelim	not yet reported	not yet reported
F-RR	$16.0M	4.00%	3.787% floating (WAC)	08162MAH1	not yet reported	not yet reported	not yet reported	not yet reported	not yet reported
G-RR	$9.2M	3.00%	3.787% floating (WAC)	08162MAK4	not yet reported	not yet reported	not yet reported	not yet reported	not yet reported
NR-RR	$27.5M	0.00%	3.787% floating (WAC)	08162MAM0	not yet reported	not yet reported	not yet reported	not yet reported	not yet reported
R	not yet reported	not yet reported	not yet reported	08162MAN8	not yet reported	not yet reported	not yet reported	not yet reported	not yet reported
S	not yet reported	not yet reported	not yet reported	08162MAR9	not yet reported	not yet reported	not yet reported	not yet reported	not yet reported
X-A	$746.4M	Interest only	1.542% floating	08162MAZ1	AA-	AAA	A+ (sf)	not yet reported	not yet reported
X-B	$79.0M	Interest only	0.653% floating	08162MBA5	BBB-	AAA	NR	not yet reported	not yet reported
X-D	$37.8M	Interest only	1.536% floating	08162MAA6	B	B-	NRprelim	not yet reported	not yet reported

Credit support is computed from the class stack order in the prospectus: the share of the deal's principal balance in classes junior to the class. Interest-only classes carry a notional balance and no principal support figure. Ratings are the latest held in the dataset for each class and agency; NR means the agency shows the class as not rated, WR that the rating was withdrawn, PIF that the class has been paid in full. Any other status value is shown exactly as the agency reports it. A + after a CUSIP marks a class with companion CUSIPs in the dataset.

Pool at issuance

Loans	41
Original loan balance	$1.16B
Weighted average coupon	3.70%
Weighted average LTV	37.8%
Median loan LTV	54.9%
Full-term interest only (share of balance)	86.2%
Balloon loans (share of balance)	100.0%
Largest loan (share of balance)	7.3%
Five largest loans (share of balance)	29.6%
Occupancy at issuance (weighted average)	93.0%

Realized outcomes

Months reported	79
Peak 30+ delinquency	8.10% (October 2025)
Ever severe (share of original balance)	13.36%
Ever modified (share of original balance)	13.42%
Past scheduled maturity (share of original balance)	9.02%
Non-performing matured (share of original balance)	45.02%
Maximum servicer advances (share of balance)	0.40%
Median DSCR, first year	1.95
Median DSCR, latest	2.31
Realized stress score	74.7

Property types

Property type	Original balance	Share of pool
Office	$427.1M	36.7%
Mixed use	$209.7M	18.0%
Lodging	$166.0M	14.3%
Multifamily	$114.1M	9.8%
Retail	$78.1M	6.7%
Multiple property types	$25.0M	2.1%
SE	$12.7M	1.1%

Property type is reported for 88.7% of the pool balance; shares are of the full pool.

Largest loans

Property	Location	Original balance	Share of pool	Coupon	Originated
Murphy Crossing	Milpitas, CA	$85.0M	7.3%	3.58%	2020
["Moffett Towers Building B", "Moffett Towers Building C", "Moffett Towers Building A"]	["Sunnyvale", "Sunnyvale", "Sunnyvale"], ["CA", "CA", "CA"]	$79.5M	6.8%	3.49%	2020
Moffett Towers Building B	Sunnyvale, CA	$79.5M	6.8%	3.49%	2020
1633 Broadway	New York, NY	$50.0M	4.3%	2.99%	2019
650 Madison Avenue	New York, NY	$50.0M	4.3%	3.49%	2019

Delinquency and stress indicator

▬ 30+ days delinquent · ▬ Distressed (90+, foreclosure, REO, non-performing matured)

Monthly shares of the deal's reported balance, from the deal indicator series in the dataset. Months in which fewer than half of the reported loans carry a delinquency status code are not plotted.

Ratings

Classes with a CUSIP	18 of 18
Classes with a current rating in the dataset	13 of 18
Net rating change since issuance	+0.41 notches (balance-weighted)
Delinquency threshold crossed	May 2020
First downgrade	July 2024

Sources: SEC Form ABS-EE asset-level reports, Form 10-D distribution reports and the deal prospectus; rating histories published under SEC Rule 17g-7(b) and agency releases. Definitions are in the methods note on the market page.