CITIGROUP COMMERCIAL MORTGAGE TRUST 2017-B1

Tranches, pool and monthly delinquency indicator for CITIGROUP COMMERCIAL MORTGAGE TRUST 2017-B1.

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

Current pool balance: $799.4M (September 2026)
Original pool balance: $941.6M
Loans at issuance: 51
Closing date: 2017-08-01
Weighted average coupon at issuance: 4.19%
Weighted average LTV at issuance: 50.7%
30+ delinquent (latest): 1.18%
Realized stress score: 50.7
Net rating change since issuance: +0.00 notches

Tranches

Class	Original balance	Credit support (computed)	Coupon	CUSIP	Fitch	KBRA	S&P	Moody's	DBRS
A-1	$21.3M	97.62%	2.008% fixed	17326CAW4	PIF	not yet reported	not yet reported	WR	Discontinued
A-2	$52.8M	91.71%	3.053% fixed	17326CAX2	PIF	not yet reported	not yet reported	WR	Discontinued
A-3	$245.0M	64.32%	3.197% fixed	17326CAY0	AAA	not yet reported	not yet reported	Aaa	AAA (sf)
A-4	$268.1M	34.35%	3.458% fixed	17326CAZ7	AAA	not yet reported	not yet reported	Aaa	AAA (sf)
A-AB	$38.9M	30.00%	3.243% fixed	17326CBA1	AAA	not yet reported	not yet reported	Aaa	AAA (sf)
A-S	$89.5M	20.00%	3.711% floating (WAC)	17326CBB9	AAA	not yet reported	not yet reported	Aa2	AAA (sf)
B	$38.0M	15.75%	3.963% floating (WAC)	17326CBC7	AA-	not yet reported	not yet reported	not yet reported	AA (high) (sf)
C	$36.9M	11.63%	4.318% floating (WAC)	17326CBD5	A-	not yet reported	not yet reported	not yet reported	A (high) (sf)
D	$41.4M	7.00%	3.000% fixed	17326CAA2 +	BBB-	not yet reported	not yet reported	not yet reported	BBB (sf)
E	$21.2M	4.63%	3.300% fixed	17326CAC8 +	BB-	not yet reported	not yet reported	not yet reported	BB (sf)
F	$8.9M	3.63%	3.300% fixed	17326CAE4 +	B-	not yet reported	not yet reported	not yet reported	B (high) (sf)
G	$8.9M	2.63%	3.300% fixed	17326CAG9 +	not yet reported	not yet reported	not yet reported	not yet reported	B (low) (sf)
H	$23.5M	0.00%	3.300% fixed	17326CBG8 +	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	17326CAU8	not yet reported	not yet reported	not yet reported	not yet reported	not yet reported
X-A	$715.6M	Interest only	1.002% floating	17326CBE3	AAA	not yet reported	not yet reported	Aa1	AAA (sf)
X-B	$38.0M	Interest only	0.355% floating	17326CBF0	AA-	not yet reported	not yet reported	not yet reported	AAA (sf)
X-D	$41.4M	Interest only	1.318% floating	17326CAJ3 +	BBB-	not yet reported	not yet reported	not yet reported	BBB (high) (sf)
X-E	$21.2M	Interest only	1.018% floating	17326CAL8 +	BB-	not yet reported	not yet reported	not yet reported	BB (high) (sf)
X-F	$17.9M	Interest only	1.018% floating	17326CAN4 +	not yet reported	not yet reported	not yet reported	not yet reported	B (sf)
X-H	$23.5M	Interest only	1.018% floating	17326CBK9 +	not yet reported	not yet reported	not yet reported	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	51
Original loan balance	$941.7M
Weighted average coupon	4.19%
Weighted average LTV	50.7%
Median loan LTV	62.5%
Full-term interest only (share of balance)	58.8%
Balloon loans (share of balance)	100.0%
Largest loan (share of balance)	6.3%
Five largest loans (share of balance)	28.2%
Occupancy at issuance (weighted average)	90.0%

Realized outcomes

Months reported	109
Peak 30+ delinquency	11.45% (October 2020)
Ever severe (share of original balance)	12.05%
Ever modified (share of original balance)	2.57%
Past scheduled maturity (share of original balance)	1.33%
Non-performing matured (share of original balance)	50.99%
Maximum servicer advances (share of balance)	0.42%
Median DSCR, first year	1.94
Median DSCR, latest	2.11
Realized stress score	50.7

Property types

Property type	Original balance	Share of pool
Retail	$178.9M	19.0%
Mixed use	$144.0M	15.3%
Lodging	$125.1M	13.3%
Office	$86.0M	9.1%
Self storage	$81.9M	8.7%
Multifamily	$72.0M	7.6%
Other (code 98)	$10.5M	1.1%

Property type is reported for 74.2% of the pool balance; shares are of the full pool.

Largest loans

Property	Location	Original balance	Share of pool	Coupon	Originated
LAKESIDE SHOPPING CENTER	Metairie, LA	$59.0M	6.3%	3.77%	2017
411 EAST WISCONSIN	Milwaukee, WI	$56.2M	6.0%	4.14%	2017
Old Town San Diego Hotel Portfolio	CA	$56.0M	5.9%	4.63%	2017
TWO FORDHAM SQUARE	Bronx, NY	$52.5M	5.6%	3.42%	2017
CHATEAU MARMONT	not yet reported	$42.0M	4.5%	4.98%	2017

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	20 of 20
Classes with a current rating in the dataset	17 of 20
Net rating change since issuance	+0.00 notches (balance-weighted)
Delinquency threshold crossed	Not crossed in the dataset
First downgrade	None recorded

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.