certstmt_10dccmt17c42610.htm - Generated by SEC Publisher for SEC Filing

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

STATEMENT TO NOTEHOLDERS

October 15, 2026


TRANSACTION PARTIES


Depositor:	Citigroup Commercial Mortgage Securities Inc.
Master Servicer:	Midland Loan Services, a Division of PNC Bank N.A.
Certificate Administrator:	Citibank, N.A.
Trustee:	Wilmington Trust, National Association
Special Servicer:	Midland Loan Services, a Division of PNC Bank N.A.
Asset Representations Reviewer /
	Park Bridge Lender Services LLC
Operating Advisor:




	Danny Lee	Citibank, Agency and Trust
	(212) 816-4936	388 Greenwich Street Trading, 4th Floor
danny1.lee@citi.com		New York, NY 10013


TABLE OF CONTENTS


1.	Distribution Summary	2
1.1.	Summary	2
1.2.	Factors	3
2.	Distribution Detail	4
2.1.	Interest Detail	4
2.2.	Interest Shortfall Detail	5
2.3.	Principal Detail	6
3.	Reconciliation Detail	7
4.	Other Information	8
5.	Stratification Detail	9
6.	Mortgage Loan Detail	14
7.	NOI Detail	16
8.	Delinquency Loan Detail	18
9.	Collateral Performance Delinquency and Loan Status Detail	19
10.	Appraisal Reduction Detail	20
11.	Historical Appraisal Reduction Detail	21
12.	Loan Modification Detail	24
13.	Historical Loan Modification Detail	25
14.	Specially Serviced Loan Detail	36
15.	Historical Specially Serviced Loan Detail	37
16.	Unscheduled Principal Detail	41
17.	Historical Unscheduled Principal Detail	42
18.	Liquidated Loan Detail	43
19.	Historical Liquidated Loan Detail	44
20.	CREFC Investor Reporting Package Legends	45
21.	Notes	46


Reports Available at sf.citidirect.com	v. 21.09.28	Page 1 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

DISTRIBUTION SUMMARY

October 15, 2026


										Accretion
										&
										Non-Cash
				Accrual		Other				Balance
	Original	Prior	Pass-Through	Day	Interest	(As Interest)	Principal	Total	Realized Loss	Increase/	Current
Class	Balance	Balance	Rate	Count	Distributed	Distributed	Distributed	Distributed	/(Recovery)	(Decrease)	Balance

A-1	27,750,000.00	-	2.121000%	30/360	-	-	-	-	-	-	-
A-2	103,900,000.00	-	3.190000%	30/360	-	-	-	-	-	-	-
A-3	240,000,000.00	159,029,963.08	3.209000%	30/360	425,272.63	-	-	425,272.63	-	-	159,029,963.08
A-4	271,691,000.00	271,691,000.00	3.471000%	30/360	785,866.22	-	-	785,866.22	-	-	271,691,000.00
A-AB	40,600,000.00	6,645,662.77	3.297000%	30/360	18,258.96	-	758,563.57	776,822.53	-	-	5,887,099.20
A-S	73,280,000.00	73,280,000.00	3.764000%	30/360	229,854.93	-	-	229,854.93	-	-	73,280,000.00
B	45,189,000.00	45,189,000.00	4.096000%	30/360	154,245.12	-	-	154,245.12	-	-	45,189,000.00
C	40,304,000.00	40,304,000.00	4.121409%	30/360	138,424.39	-	-	138,424.39	-	-	40,304,000.00
D	29,311,000.00	29,311,000.00	3.000000%	30/360	73,277.50	-	-	73,277.50	-	-	29,311,000.00
E-RR	21,984,000.00	21,984,000.00	4.371409%	30/360	80,084.21	-	-	80,084.21	-	-	21,984,000.00
F-RR	12,214,000.00	12,214,000.00	4.371409%	30/360	44,493.66	-	-	44,493.66	-	-	12,214,000.00
G-RR	12,213,000.00	12,213,000.00	4.371409%	30/360	44,490.01	-	-	44,490.01	-	-	12,213,000.00
H-RR	9,770,000.00	9,770,000.00	4.371409%	30/360	35,590.55	-	-	35,590.55	-	-	9,770,000.00
J-RR	48,853,893.00	48,853,893.00	4.371409%	30/360	173,640.96	-	-	173,640.96	-	-	48,853,893.00
S	-	-	0.000000%	30/360	-	-	-	-	-	-	-
R	-	-	0.000000%	30/360	-	-	-	-	-	-	-
Total	977,059,893.00	730,485,518.85			2,203,499.14	-	758,563.57	2,962,062.71	-	-	729,726,955.28
Notional
X-A	757,221,000.00	510,646,625.85	0.942221%	30/360	400,951.58	-	-	400,951.58	-	(758,563.57)	509,888,062.28
X-B	85,493,000.00	85,493,000.00	0.263430%	30/360	18,767.88	-	-	18,767.88	-	-	85,493,000.00
X-D	29,311,000.00	29,311,000.00	1.371409%	30/360	33,497.80	-	-	33,497.80	-	-	29,311,000.00
Total	872,025,000.00	625,450,625.85			453,217.26	-	-	453,217.26	-	(758,563.57)	624,692,062.28

Grand Total	1,849,084,893	1,355,936,145			2,656,716.40	-	758,563.57	3,415,279.97	-	(758,563.57)	1,354,419,018


Reports Available at sf.citidirect.com	v. 21.09.28	Page 2 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

DISTRIBUTION SUMMARY - FACTORS

October 15, 2026


								Accretion
								&
								Non-Cash
				Other				Balance
		Record	Interest	(As Interest)	Principal	Total	Realized Loss	Increase/	Current
Class	CUSIP	Date	Distributed	Distributed	Distributed	Distributed	/(Recovery)	(Decrease)	Balance

A-1	17326FAA5	09/30/2026	-	-	-	-	-	-	-
A-2	17326FAB3	09/30/2026	-	-	-	-	-	-	-
A-3	17326FAC1	09/30/2026	1.77196929	-	-	1.77196929	-	-	662.62484617
A-4	17326FAD9	09/30/2026	2.89250001	-	-	2.89250001	-	-	1,000.00000000
A-AB	17326FAE7	09/30/2026	0.44972808	-	18.68383177	19.13355985	-	-	145.00244335
A-S	17326FAH0	09/30/2026	3.13666662	-	-	3.13666662	-	-	1,000.00000000
X-A	17326FAF4	09/30/2026	0.52950404	-	-	0.52950404	-	-	673.36756677
B	17326FAJ6	09/30/2026	3.41333333	-	-	3.41333333	-	-	1,000.00000000
C	17326FAK3	09/30/2026	3.43450749	-	-	3.43450749	-	-	1,000.00000000
X-B	17326FAG2	09/30/2026	0.21952534	-	-	0.21952534	-	-	1,000.00000000
D	17326FAL1 U1746HAA4	09/30/2026	2.50000000	-	-	2.50000000	-	-	1,000.00000000
X-D	17326FAY3 U1746HAG1	09/30/2026	1.14284057	-	-	1.14284057	-	-	1,000.00000000
E-RR	17326FAP2	09/30/2026	3.64284070	-	-	3.64284070	-	-	1,000.00000000
F-RR	17326FAR8	09/30/2026	3.64284100	-	-	3.64284100	-	-	1,000.00000000
G-RR	17326FAT4	09/30/2026	3.64284042	-	-	3.64284042	-	-	1,000.00000000
H-RR	17326FAV9	09/30/2026	3.64284033	-	-	3.64284033	-	-	1,000.00000000
J-RR	17326FAX5	09/30/2026	3.55429116	-	-	3.55429116	-	-	1,000.00000000
S	17326FBD8	09/30/2026	-	-	-	-	-	-	-
R	17326FBA4	09/30/2026	-	-	-	-	-	-	-


Reports Available at sf.citidirect.com	v. 21.09.28	Page 3 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

DISTRIBUTION INFORMATION - INTEREST DETAIL

October 15, 2026


		Rate			Interest			Shortfall				Paid
												Cap
				Accrual	Net	Accreted	Non	Carry	Cap Carryover			Carryover
Class	Uncapped Capped		Next	Dates	Accrued	/Deferred	Recovered	Forward	/Basis Risk	Accrued	Carry Forward /Basis Risk		Total

A-1	2.12100%	2.12100%	2.12100%	09/01-09/30	-	-	-	-	-	-	-	-	-
A-2	3.19000%	3.19000%	3.19000%	09/01-09/30	-	-	-	-	-	-	-	-	-
A-3	3.20900%	3.20900%	3.20900%	09/01-09/30	425,272.63	-	-	-	-	425,272.63	-	-	425,272.63
A-4	3.47100%	3.47100%	3.47100%	09/01-09/30	785,866.22	-	-	-	-	785,866.22	-	-	785,866.22
A-AB	3.29700%	3.29700%	3.29700%	09/01-09/30	18,258.96	-	-	-	-	18,258.96	-	-	18,258.96
A-S	3.76400%	3.76400%	3.76400%	09/01-09/30	229,854.93	-	-	-	-	229,854.93	-	-	229,854.93
B	4.09600%	4.09600%	4.09600%	09/01-09/30	154,245.12	-	-	-	-	154,245.12	-	-	154,245.12
C	4.34400%	4.12141%	4.12141%	09/01-09/30	138,424.39	-	-	-	-	138,424.39	-	-	138,424.39
D	3.00000%	3.00000%	3.00000%	09/01-09/30	73,277.50	-	-	-	-	73,277.50	-	-	73,277.50
E-RR	4.59400%	4.37141%	4.37141%	09/01-09/30	80,084.21	-	-	-	-	80,084.21	-	-	80,084.21
F-RR	4.59400%	4.37141%	4.37141%	09/01-09/30	44,493.66	-	-	-	-	44,493.66	-	-	44,493.66
G-RR	4.59400%	4.37141%	4.37141%	09/01-09/30	44,490.01	-	-	-	-	44,490.01	-	-	44,490.01
H-RR	4.59400%	4.37141%	4.37141%	09/01-09/30	35,590.55	-	-	-	-	35,590.55	-	-	35,590.55
J-RR	4.59400%	4.37141%	4.37141%	09/01-09/30	177,966.95	-	-	5,357.66	-	173,640.96	-	-	173,640.96
S	0.00000%	0.00000%	0.00000%	09/01-09/30	-	-	-	-	-	-	-	-	-
R	0.00000%	0.00000%	0.00000%	09/01-09/30	-	-	-	-	-	-	-	-	-
Total					2,207,825.13	-	-	5,357.66	-	2,203,499.14	-	-	2,203,499.14
Notional
X-A	1.27500%	0.94222%	0.94222%	09/01-09/30	400,951.58	-	-	-	-	400,951.58	-	-	400,951.58
X-B	0.38100%	0.26343%	0.26343%	09/01-09/30	18,767.88	-	-	-	-	18,767.88	-	-	18,767.88
X-D	1.59400%	1.37141%	1.37141%	09/01-09/30	33,497.80	-	-	-	-	33,497.80	-	-	33,497.80
Total					453,217.26	-	-	-	-	453,217.26	-	-	453,217.26

Grand Total					2,661,042.39	-	-	5,357.66	-	2,656,716.40	-	-	2,656,716.40


Reports Available at sf.citidirect.com	v. 21.09.28	Page 4 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

DISTRIBUTION INFORMATION - INTEREST SHORTFALL DETAIL

October 15, 2026


											Cap Carryover /
	Non-Recov Shortfall				Carry Forward Interest					Basis Risk Shortfall
			Other
Class	PPIS	SSRA	Shortfall	Prior	Int. on Prior	New	Paid	Outstanding	Prior	Int. on Prior	New	Paid	Outstanding

A-1	-	-	-	-	-	-	-	-	-	-	-	-	-
A-2	-	-	-	-	-	-	-	-	-	-	-	-	-
A-3	-	-	-	-	-	-	-	-	-	-	-	-	-
A-4	-	-	-	-	-	-	-	-	-	-	-	-	-
A-AB	-	-	-	-	-	-	-	-	-	-	-	-	-
A-S	-	-	-	-	-	-	-	-	-	-	-	-	-
B	-	-	-	-	-	-	-	-	-	-	-	-	-
C	-	-	-	-	-	-	-	-	-	-	-	-	-
D	-	-	-	-	-	-	-	-	-	-	-	-	-
E-RR	-	-	-	-	-	-	-	-	-	-	-	-	-
F-RR	-	-	-	-	-	-	-	-	-	-	-	-	-
G-RR	-	-	-	-	-	-	-	-	-	-	-	-	-
H-RR	-	-	-	-	-	-	-	-	-	-	-	-	-
J-RR	-	-	-	283,203.46	1,031.67	4,325.99	-	288,561.12	-	-	-	-	-
S	-	-	-	-	-	-	-	-	-	-	-	-	-
R	-	-	-	-	-	-	-	-	-	-	-	-	-
Total	-	-	-	283,203.46	1,031.67	4,325.99	-	288,561.12	-	-	-	-	-
Notional
X-A	-	-	-	-	-	-	-	-	-	-	-	-	-
X-B	-	-	-	-	-	-	-	-	-	-	-	-	-
X-D	-	-	-	-	-	-	-	-	-	-	-	-	-
Total	-	-	-	-	-	-	-	-	-	-	-	-	-

Grand Total	-	-	-	283,203.46	1,031.67	4,325.99	-	288,561.12	-	-	-	-	-


Reports Available at sf.citidirect.com	v. 21.09.28	Page 5 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

DISTRIBUTION INFORMATION - PRINCIPAL DETAIL

October 15, 2026


					Accretion
					&
					Non-Cash
					Balance		Cumulative
	Prior	Principal	Accreted	Realized Loss	Increase/	Current	Realized	Class %	Class %	Sub %	Sub %
Class	Balance	Distributed	Principal	/(Recovery)	(Decrease)	Balance	Loss	Original	Current	Original	Current

A-1	-	-	-	-	-	-	-	2.84%	0.00%	30.00%	40.17%
A-2	-	-	-	-	-	-	-	10.63%	0.00%	30.00%	40.17%
A-3	159,029,963.08	-	-	-	-	159,029,963.08	-	24.56%	21.79%	30.00%	40.17%
A-4	271,691,000.00	-	-	-	-	271,691,000.00	-	27.81%	37.23%	30.00%	40.17%
A-AB	6,645,662.77	758,563.57	-	-	-	5,887,099.20	-	4.16%	0.81%	30.00%	40.17%
A-S	73,280,000.00	-	-	-	-	73,280,000.00	-	7.50%	10.04%	22.50%	30.13%
B	45,189,000.00	-	-	-	-	45,189,000.00	-	4.62%	6.19%	17.88%	23.93%
C	40,304,000.00	-	-	-	-	40,304,000.00	-	4.13%	5.52%	13.75%	18.41%
D	29,311,000.00	-	-	-	-	29,311,000.00	-	3.00%	4.02%	10.75%	14.39%
E-RR	21,984,000.00	-	-	-	-	21,984,000.00	-	2.25%	3.01%	8.50%	11.38%
F-RR	12,214,000.00	-	-	-	-	12,214,000.00	-	1.25%	1.67%	7.25%	9.71%
G-RR	12,213,000.00	-	-	-	-	12,213,000.00	-	1.25%	1.67%	6.00%	8.03%
H-RR	9,770,000.00	-	-	-	-	9,770,000.00	-	1.00%	1.34%	5.00%	6.69%
J-RR	48,853,893.00	-	-	-	-	48,853,893.00	-	5.00%	6.69%	0.00%	0.00%
S	-	-	-	-	-	-	-	0.00%	0.00%	0.00%	0.00%
R	-	-	-	-	-	-	-	0.00%	0.00%	0.00%	0.00%

Total	730,485,518.85	758,563.57	-	-	-	729,726,955.28	-	100.00%	100.00%


Reports Available at sf.citidirect.com	v. 21.09.28	Page 6 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

RECONCILIATION DETAIL

October 15, 2026


SOURCE OF FUNDS			ALLOCATION OF FUNDS

Interest Funds Available			Scheduled Fees
Scheduled Interest	2,674,923.59		Servicing Fee	8,451.29
Gross Prepayment Interest Shortfall	-		Trustee/Certificate Administrator Fee	3,895.93
Interest Adjustments	-		Operating Advisor Fee	1,071.33
ASER Amount	-		Asset Representations Reviewer Ongoing Fee	158.27
Realized Loss in Excess of Principal Balance	-		CREFC Intellectual Property Royalty License Fee	304.37
Total Interest Funds Available		2,674,923.59	Total Scheduled Fees		13,881.19
Principal Funds Available			Additional Fees, Expenses, etc.
Scheduled Principal	758,563.57		Additional Servicing Fee	-
Curtailments	-		Special Servicing Fee	-
Unscheduled Principal Collections	-		Work-out Fee	-
Net Liquidation Proceeds	-		Liquidation Fee	-
Repurchased Principal	-		Trust Fund Expenses	-
Substitution Principal	-		Trust Advisor Expenses	-
Other Principal	-		Reimbursement of Interest on Advances to the Servicer	4,326.00
			Borrower Reimbursable Trust Fund Expenses	-
Total Principal Funds Available		758,563.57
			Other Expenses	-
Other Funds Available
Yield Maintenance Charges	-		Total Additional Fees, Expenses, etc.		4,326.00
Withdrawal of Withheld Amounts from the Interest Reserve			Distributions
Account	-
			Interest Distribution	2,656,716.40
Deposit of Withheld Amounts to the Interest Reserve Account	-
			Principal Distribution	758,563.57
Total Other Funds Available		-	Yield Maintenance Charge Distribution	-
			Total Distributions		3,415,279.97




Total Funds Available		3,433,487.16
			Total Funds Allocated		3,433,487.16


Reports Available at sf.citidirect.com	v. 21.09.28	Page 7 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

OTHER INFORMATION

Interest Reserve Account Information

October 15, 2026


Beginning Interest Reserve Account Balance	0.00
Deposit of Withheld Amounts to the Interest Reserve Account	0.00
Withdrawal of Withheld Amounts from the Interest Reserve Account	0.00
Ending Interest Reserve Account Balance	0.00
Excess Liquidation Proceeds Reserve Account Information
Beginning Excess Liquidation Proceeds Reserve Account Balance	0.00
Deposit to the Excess Liquidation Proceeds Reserve Account	0.00
Withdrawal from the Excess Liquidation Proceeds Reserve Account	0.00
Ending Excess Liquidation Proceeds Reserve Account Balance	0.00
ARD Mortgage Loan Information
Excess Interest	0.00
Collateral Information
% of Cut-Off Principal Balance Outstanding	74.686000%
Controlling Class Information
Controlling Class is Class J-RR.
The Controlling Class Representative is KKR Real Estate Credit Opportunity Partners Aggregator I L.P.
There Are No Disclosable Special Servicer Fees.


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Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

STRATIFICATION DETAIL

October 15, 2026


Anticipated Remaining Term

Anticipated Remaining	Asset	Ending Scheduled	% of			Wtd Avg
Term Range	Count	Balance	Agg.Bal. WAC		WAM	DSCR

60 Months or Less	44	728,746,956.04	99.87	4.3931	11	1.804784
61 to 90 Months	1	980,000.00	0.13	5.0600	72	1.270000
91 Months or Greater	0	0.00	0.00	0.0000	0	0.000000
Total	45	729,726,956.04	100.00	4.3940	11	1.804066

Debt Service Coverage Ratio

Debt Service Coverage	Asset	Ending Scheduled	% of			Wtd Avg
Ratio Range	Count	Balance	Agg.Bal. WAC		WAM	DSCR

1.250 or Less	11	214,949,746.44	29.46	4.6763	13	0.881236
1.251 to 1.500	4	32,724,619.48	4.48	4.2133	11	1.310431
1.501 to 1.750	6	48,919,744.16	6.70	4.7139	10	1.690326
1.751 to 2.000	9	108,542,303.75	14.87	4.5701	10	1.881452
2.001 to 2.250	4	117,714,724.14	16.13	4.3966	11	2.091170
2.251 to 2.500	5	115,062,146.63	15.77	3.9934	11	2.379849
2.501 to 2.750	1	12,160,142.36	1.67	4.6950	10	2.730000
2.751 to 3.000	3	69,822,660.41	9.57	3.7225	9	2.942839
3.001 to 3.250	1	2,730,868.67	0.37	4.9850	10	3.240000
3.251 to 3.500	0	0.00	0.00	0.0000	0	0.000000
3.501 to 3.750	0	0.00	0.00	0.0000	0	0.000000
3.751 to 4.000	0	0.00	0.00	0.0000	0	0.000000
4.001 or Greater	1	7,100,000.00	0.97	4.1000	11	4.190000
Total	45	729,726,956.04	100.00	4.3940	11	1.804066


Reports Available at sf.citidirect.com	v. 21.09.28	Page 9 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

STRATIFICATION DETAIL

October 15, 2026


Ending Schedule Balance

Ending Schedule Balance	Asset	Ending Scheduled	% of			Wtd Avg
Range	Count	Balance	Agg.Bal. WAC WAM			DSCR

1 to 5,000,000	11	31,631,990.03	4.33	4.8006	12	1.947517
10,000,001 to 15,000,000	3	38,985,142.36	5.34	4.5833	10	1.594208
15,000,001 to 20,000,000	4	70,063,522.28	9.60	4.6676	20	1.474016
20,000,001 to 25,000,000	7	163,701,814.97	22.43	4.2559	10	1.818939
25,000,001 to 30,000,000	2	55,723,869.80	7.64	4.5676	11	1.152923
30,000,001 to 35,000,000	2	68,384,563.24	9.37	4.6206	8	0.785591
35,000,001 to 40,000,000	2	74,127,468.30	10.16	4.1000	10	2.224927
40,000,001 to 45,000,000	1	41,000,000.00	5.62	3.9950	11	2.950000
45,000,001 to 50,000,000	1	50,000,000.00	6.85	3.6000	13	2.450000
5,000,001 to 10,000,000	11	76,108,585.06	10.43	4.7857	10	1.846533
50,000,001 to 55,000,000	0	0.00	0.00	0.0000	0	0.000000
55,000,001 to 60,000,000	1	60,000,000.00	8.22	4.4953	11	2.080000
60,000,001 to 65,000,000	0	0.00	0.00	0.0000	0	0.000000
65,000,001 to 70,000,000	0	0.00	0.00	0.0000	0	0.000000
70,000,001 to 75,000,000	0	0.00	0.00	0.0000	0	0.000000
75,000,001 to 80,000,000	0	0.00	0.00	0.0000	0	0.000000
80,000,001 to 85,000,000	0	0.00	0.00	0.0000	0	0.000000
85,000,000+	0	0.00	0.00	0.0000	0	0.000000
Total	45	729,726,956.04	100.00	4.3940	11	1.804066


Reports Available at sf.citidirect.com	v. 21.09.28	Page 10 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

STRATIFICATION DETAIL

October 15, 2026


Loan Rate

	Asset	Ending Scheduled	% of			Wtd Avg
Loan Rate Range	Count	Balance	Agg.Bal. WAC WAM			DSCR

4.00 or Less	5	144,541,462.80	19.81	3.7248	11	2.493115
4.01 to 4.25	4	116,227,468.30	15.93	4.1151	10	1.918885
4.26 to 4.50	8	179,854,313.36	24.65	4.4415	10	1.745157
4.51 to 4.75	13	187,296,697.14	25.67	4.6382	10	1.607549
4.76 to 5.00	5	15,209,986.74	2.08	4.9316	10	1.838212
5.01 to 5.25	8	74,913,319.78	10.27	5.1117	19	1.058255
5.26 to 5.50	1	2,034,346.53	0.28	5.2850	10	2.460000
5.51 to 5.75	1	9,649,361.39	1.32	5.5470	10	0.610000
5.76 to 6.00	0	0.00	0.00	0.0000	0	0.000000
6.01 to 6.25	0	0.00	0.00	0.0000	0	0.000000
6.26 to 6.50	0	0.00	0.00	0.0000	0	0.000000
6.51 to 6.75	0	0.00	0.00	0.0000	0	0.000000
6.76 to 7.00	0	0.00	0.00	0.0000	0	0.000000
7.01 or Greater	0	0.00	0.00	0.0000	0	0.000000
Total	45	729,726,956.04	100.00	4.3940	11	1.804066

Property Type

	Asset	Ending Scheduled	% of			Wtd Avg
Property Type Range	Count	Balance	Agg.Bal. WAC WAM			DSCR

Industrial	1	7,100,000.00	0.97	4.1000	11	4.190000
Lodging	6	113,253,524.81	15.52	4.6705	8	1.570181
Mixed Use	7	134,141,806.65	18.38	4.3064	10	2.152135
Multifamily	3	44,509,346.53	6.10	4.7453	10	1.584437
Office	8	209,190,952.01	28.67	4.1523	11	1.558778
Other	1	6,000,000.00	0.82	5.2500	8	1.710000
Retail	14	181,553,137.48	24.88	4.3842	15	1.883070
Self Storage	1	5,041,348.08	0.69	4.9150	11	1.220000
Total	45	729,726,956.04	100.00	4.3940	11	1.804066


Reports Available at sf.citidirect.com	v. 21.09.28	Page 11 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

STRATIFICATION DETAIL

October 15, 2026


Remaining Amortization Term

Remaining Amortization	Asset	Ending Scheduled	% of			Wtd Avg
Term Range	Count	Balance	Agg.Bal.	WAC	WAM	DSCR

240 Months or Less	22	416,940,480.13	57.14	4.2989	10	1.983483
241 to 270 Months	23	312,786,475.91	42.86	4.5208	12	1.564905
271 to 300 Months	0	0.00	0.00	0.0000	0	0.000000
301 Months or Greater	0	0.00	0.00	0.0000	0	0.000000
Total	45	729,726,956.04	100.00	4.3940	11	1.804066

Seasoning

	Asset	Ending Scheduled	% of			Wtd Avg
Seasoning Range	Count	Balance	Agg.Bal.	WAC	WAM	DSCR

12 Months or Less	0	0.00	0.00	0.0000	0	0.000000
13 to 24 Months	0	0.00	0.00	0.0000	0	0.000000
25 to 36 Months	0	0.00	0.00	0.0000	0	0.000000
37 to 48 Months	1	980,000.00	0.13	5.0600	72	1.270000
49 Months or Greater	44	728,746,956.04	99.87	4.3931	11	1.804784
Total	45	729,726,956.04	100.00	4.3940	11	1.804066


Reports Available at sf.citidirect.com	v. 21.09.28	Page 12 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

STRATIFICATION DETAIL

October 15, 2026


State

	Asset	Ending Scheduled	% of			Wtd Avg
State Range	Count	Balance	Agg.Bal. WAC WAM			DSCR

California	9	151,295,756.07	20.73	4.6432	9	1.522583
Colorado	3	21,653,736.66	2.97	4.6707	10	2.444529
Connecticut	1	2,034,346.53	0.28	5.2850	10	2.460000
Delaware	0	0.00	0.00	0.0000	0	0.000000
District of Columbia	1	50,000,000.00	6.85	3.6000	13	2.450000
Florida	1	21,000,000.00	2.88	4.4760	10	1.730000
Georgia	5	20,040,324.42	2.75	4.6511	10	1.939329
Illinois	0	0.00	0.00	0.0000	0	0.000000
Iowa	1	980,000.00	0.13	5.0600	72	1.270000
Kentucky	1	37,037,800.10	5.08	4.0400	9	2.330000
Louisiana	1	24,718,802.39	3.39	3.9840	10	1.310000
Maryland	0	0.00	0.00	0.0000	0	0.000000
Massachusetts	3	92,475,000.00	12.67	4.5397	11	2.119684
Michigan	1	3,218,105.80	0.44	4.9800	10	1.600000
Missouri	1	6,000,000.00	0.82	5.2500	8	1.710000
Nevada	0	0.00	0.00	0.0000	0	0.000000
New York	2	60,000,000.00	8.22	3.7750	9	1.693333
North Carolina	1	8,394,908.55	1.15	4.5340	10	1.870000
Ohio	1	2,664,875.29	0.37	5.1500	11	1.330000
Pennsylvania	1	26,208,485.25	3.59	4.7000	12	1.190000
South Carolina	1	5,625,055.94	0.77	4.6400	11	2.050000
Texas	0	0.00	0.00	0.0000	0	0.000000
Utah	1	5,041,348.08	0.69	4.9150	11	1.220000
Various	6	116,278,668.90	15.93	4.5909	17	1.223353
Virginia	1	24,000,000.00	3.29	4.5110	10	1.980000
Washington	1	6,237,081.65	0.85	5.0250	12	1.190000
West Virginia	1	3,822,660.41	0.52	3.8900	11	2.950000
Wisconsin	1	41,000,000.00	5.62	3.9950	11	2.950000
Total	45	729,726,956.04	100.00	4.3940	11	1.804066


Reports Available at sf.citidirect.com	v. 21.09.28	Page 13 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

MORTGAGE LOAN DETAIL

October 15, 2026


		Prop			Paid				Beginning	Ending		Payment Workout Mod
		Type			Through	Gross	Interest	Principal	Scheduled	Scheduled	Maturity	Status	Strategy Code
Loan ID	OMCR	(1)	City	State	Date	Coupon	Payment	Payment	Balance	Balance	Date	(2)	(3)	(4)

30313280	1	MU	Boston	MA	10/06/2026	4.49530%	224,765.00	-	60,000,000.00	60,000,000.00	09/06/2027	0	0	0
30313291	10	RT	Baton Rouge	LA	10/01/2026	3.98400%	82,236.35	51,181.78	24,769,984.17	24,718,802.39	08/01/2027	0	0	0
30313292	11	RT	Langhorne	PA	10/06/2026	4.70000%	102,815.98	42,402.61	26,250,887.86	26,208,485.25	10/06/2027	0	0	0
30313293	12	RT	Various	XX	10/06/2026	4.40000%	78,692.21	69,854.15	21,461,512.40	21,391,658.25	09/06/2027	0	0	0
30313294	13	OF	La Jolla	CA	10/03/2026	4.55000%	85,820.46	42,613.99	22,633,968.32	22,591,354.33	10/06/2027	0	0	0
30313296	15	MU	New York	NY	10/06/2026	3.25000%	67,708.33	-	25,000,000.00	25,000,000.00	06/06/2027	0	0	0
30313340	16	MF	Various	XX	10/06/2026	4.71200%	98,166.67	-	25,000,000.00	25,000,000.00	09/06/2027	0	0	0
30313300	17	LO	Arlington	VA	10/06/2026	4.51100%	90,220.00	-	24,000,000.00	24,000,000.00	08/06/2027	0	0	0
30313281	1A	MU	Boston	MA	10/06/2026	4.49530%	56,191.25	-	15,000,000.00	15,000,000.00	09/06/2027	0	0	0
30313231	2	OF	Washington	DC	10/01/2026	3.60000%	150,000.00	-	50,000,000.00	50,000,000.00	11/01/2027	0	0	0
30313251	20	OF	Various	XX	10/06/2026	4.26400%	62,938.59	43,004.77	17,712,549.70	17,669,544.93	08/06/2027	0	0	0
30313304	21	RT	Miami	FL	10/06/2026	4.47600%	78,330.00	-	21,000,000.00	21,000,000.00	08/06/2027	0	0	0
30313305	22	MU	Los Angeles	CA	09/06/2026	4.68300%	76,098.75	-	19,500,000.00	19,500,000.00	07/06/2027	B	0	0
30313306	23	MF	Methuen	MA	10/06/2026	4.73000%	68,880.63	-	17,475,000.00	17,475,000.00	09/06/2027	0	0	0
30313248	24	RT	Various	XX	10/08/2026	5.04000%	64,853.11	22,238.82	15,441,216.17	15,418,977.35	09/08/2031	0	0	0
30313310	27	MH	Parachute	CO	10/06/2026	4.69500%	47,665.37	22,698.92	12,182,841.28	12,160,142.36	08/06/2027	0	0	0
30313311	28	LO	Los Angeles	CA	10/06/2026	5.54700%	44,746.65	30,823.29	9,680,184.68	9,649,361.39	08/06/2027	0	0	8
30313312	29	OF	San Jose	CA	10/06/2026	4.58000%	45,132.08	-	11,825,000.00	11,825,000.00	10/06/2027	0	8	0
30313315	32	RT	Greensboro	NC	10/06/2026	4.53400%	31,783.58	17,154.08	8,412,062.63	8,394,908.55	08/06/2027	0	0	0
30298889	34	RT	Peach Tree	GA	10/06/2026	4.28000%	30,370.17	-	8,515,000.00	8,515,000.00	09/06/2027	0	0	0
30313317	35	MH	Various	XX	10/06/2026	5.15000%	31,314.42	13,459.73	7,296,563.55	7,283,103.82	10/06/2027	0	0	0
30313318	36	MH	Fort Collins	CO	10/06/2026	4.50000%	25,419.75	15,875.10	6,778,600.73	6,762,725.63	09/06/2027	0	0	0
30313319	37	LO	Sequim	WA	07/06/2026	5.02500%	26,204.37	20,679.43	6,257,761.08	6,237,081.65	10/06/2027	3	8	8
30313321	39	IN	San Diego	CA	10/06/2026	4.10000%	24,258.33	-	7,100,000.00	7,100,000.00	09/06/2027	0	0	0
30313283	4	RT	Pleasant Prairie	WI	10/01/2026	3.99500%	136,495.83	-	41,000,000.00	41,000,000.00	09/01/2027	0	0	0
30313322	40	MU	West Columbia	SC	10/06/2026	4.64000%	21,800.35	12,964.69	5,638,020.63	5,625,055.94	09/06/2027	0	0	0
30313323	41	N/A	St. Louis	MO	09/06/2026	5.25000%	26,250.00	-	6,000,000.00	6,000,000.00	06/06/2027	B	0	0
30313324	42	SS	Provo	UT	10/06/2026	4.91500%	20,694.41	11,203.92	5,052,552.00	5,041,348.08	09/06/2027	0	0	0
30313325	43	OF	Venice	CA	10/06/2026	4.62450%	21,195.63	-	5,500,000.00	5,500,000.00	08/06/2027	0	0	0
30313326	44	RT	Parkersburg	WV	10/06/2026	3.89000%	12,440.26	14,953.30	3,837,613.71	3,822,660.41	09/06/2027	0	0	0
30313327	45	MU	Cartersville	GA	10/06/2026	4.75000%	17,301.98	10,084.51	4,371,026.31	4,360,941.80	06/06/2027	0	0	0
30313328	46	MU	Temecula	CA	10/06/2026	4.54100%	17,647.90	7,808.32	4,663,617.23	4,655,808.91	08/06/2027	0	0	0


Reports Available at sf.citidirect.com	v. 21.09.28	Page 14 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

MORTGAGE LOAN DETAIL

October 15, 2026


		Prop			Paid				Beginning	Ending		Payment Workout Mod
		Type			Through	Gross	Interest	Principal	Scheduled	Scheduled	Maturity	Status Strategy Code
Loan ID	OMCR	(1)	City	State	Date	Coupon	Payment	Payment	Balance	Balance	Date	(2)	(3)	(4)

30313330	48	LO	Richmond Hill	GA	10/06/2026	5.25000%	12,924.91	9,546.88	2,954,265.31	2,944,718.43	10/06/2027	0	0	0
30313331	49	RT	Grand Rapids	MI	09/06/2026	4.98000%	13,380.74	6,168.66	3,224,274.46	3,218,105.80	08/06/2027	B	0	0
30313284	5	OF	San Jose	CA	10/06/2026	4.16000%	128,804.18	65,383.29	37,155,051.49	37,089,668.20	10/06/2027	0	0	0
30313333	51	MH	Arvada	CO	10/06/2026	4.98500%	11,369.61	6,047.31	2,736,915.98	2,730,868.67	08/06/2027	0	0	0
30313335	53	RT	Willoughby	OH	09/06/2026	5.15000%	11,461.38	5,738.45	2,670,613.74	2,664,875.29	09/06/2027	B	0	0
30313336	54	RT	Duluth	GA	10/06/2026	4.95000%	9,804.70	4,073.32	2,376,898.11	2,372,824.79	10/06/2027	0	0	0
30313337	55	MF	Hartford	CT	10/06/2026	5.28500%	8,978.65	4,326.31	2,038,672.84	2,034,346.53	08/06/2027	0	0	0
30313338	56	RT	Dacula	GA	10/06/2026	4.79000%	7,386.41	3,618.87	1,850,458.27	1,846,839.40	09/06/2027	0	0	0
30313339	57	RT	Milford	IA	10/06/2026	5.06000%	4,132.33	-	980,000.00	980,000.00	10/06/2032	0	0	0
30313285	6	LO	Los Angeles	CA	10/06/2026	5.11400%	142,593.21	74,930.93	33,459,494.17	33,384,563.24	03/06/2027	0	8	8
30313288	7	LO	Louisville	KY	10/06/2026	4.04000%	124,895.89	59,989.83	37,097,789.93	37,037,800.10	07/06/2027	0	0	0
30313289	8	OF	Various	XX	10/06/2026	4.45000%	109,711.50	69,738.31	29,585,122.86	29,515,384.55	09/06/2027	0	0	0
30313290	9	OF	New York	NY	09/06/2026	4.15000%	121,041.67	-	35,000,000.00	35,000,000.00	09/06/2027	B	0	8
Total	Count = 45						2,674,923.59	758,563.57	730,485,519.61	729,726,956.04


Reports Available at sf.citidirect.com	v. 21.09.28	Page 15 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

NOI DETAIL

October 15, 2026


		Property			Ending	Preceding	Most	Most Recent	Most Recent
		Type			Scheduled	Fiscal	Recent	Financial As of	Financial Asof
Loan ID	OMCR	(1)	City	State	Balance	Year NOI	NOI	Start Date	End Date

30313280	1	MU	Boston	MA	60,000,000.00	5,774,779.89	7,617,595.88	01/01/2026	06/30/2026
30313291	10	RT	Baton Rouge	LA	24,718,802.39	27,158,111.98	25,969,143.36	01/01/2026	06/30/2026
30313292	11	RT	Langhorne	PA	26,208,485.25	2,378,522.07	2,223,632.69	01/01/2026	06/30/2026
30313293	12	RT	Various	XX	21,391,658.25	2,994,033.31	1,010,959.24	01/01/2026	06/30/2026
30313294	13	OF	La Jolla	CA	22,591,354.33	2,483,173.82	2,749,429.68	01/01/2026	06/30/2026
30313296	15	MU	New York	NY	25,000,000.00	2,170,179.60	2,432,590.88	01/01/2026	06/30/2026
30313340	16	MF	Various	XX	25,000,000.00	3,688,121.55	3,688,121.55	Not Available	Not Available
30313300	17	LO	Arlington	VA	24,000,000.00	5,759,627.41	1,242,235.53	Not Available	Not Available
30313281	1A	MU	Boston	MA	15,000,000.00	5,774,779.89	7,617,595.88	01/01/2026	06/30/2026
30313231	2	OF	Washington	DC	50,000,000.00	25,172,837.32	18,740,873.98	Not Available	Not Available
30313251	20	OF	Various	XX	17,669,544.93	3,587,503.49	3,381,759.60	01/01/2026	06/30/2026
30313304	21	RT	Miami	FL	21,000,000.00	1,658,200.47	1,658,200.47	Not Available	Not Available
30313305	22	MU	Los Angeles	CA	19,500,000.00	1,403,963.00	2,242,863.32	Not Available	Not Available
30313306	23	MF	Methuen	MA	17,475,000.00	1,993,873.32	1,953,527.00	Not Available	Not Available
30313248	24	RT	Various	XX	15,418,977.35	2,803,228.27	693,143.95	Not Available	Not Available
30313310	27	MH	Parachute	CO	12,160,142.36	2,084,178.74	2,342,337.06	Not Available	Not Available
30313311	28	LO	Los Angeles	CA	9,649,361.39	825,086.00	190,549.24	01/01/2026	03/31/2026
30313312	29	OF	San Jose	CA	11,825,000.00	(220,037.91)	(105,750.89)	Not Available	Not Available
30313315	32	RT	Greensboro	NC	8,394,908.55	1,003,282.95	1,221,317.80	Not Available	Not Available
30298889	34	RT	Peach Tree	GA	8,515,000.00	872,621.67	872,621.67	Not Available	Not Available
30313317	35	MH	Various	XX	7,283,103.82	829,413.99	933,262.01	Not Available	Not Available
30313318	36	MH	Fort Collins	CO	6,762,725.63	650,410.14	807,555.45	Not Available	Not Available
30313319	37	LO	Sequim	WA	6,237,081.65	818,336.27	818,336.27	Not Available	Not Available
30313321	39	IN	San Diego	CA	7,100,000.00	1,374,878.17	1,374,878.17	Not Available	Not Available
30313283	4	RT	Pleasant Prairie	WI	41,000,000.00	17,243,114.98	17,966,862.58	01/01/2026	06/30/2026
30313322	40	MU	West Columbia	SC	5,625,055.94	829,282.05	950,367.13	01/01/2026	06/30/2026
30313323	41	N/A	St. Louis	MO	6,000,000.00	553,000.00	1,106,000.00	01/01/2026	06/30/2026
30313324	42	SS	Provo	UT	5,041,348.08	564,579.90	475,802.42	Not Available	Not Available
30313325	43	OF	Venice	CA	5,500,000.00	659,534.58	506,841.78	01/01/2026	06/30/2026
30313326	44	RT	Parkersburg	WV	3,822,660.41	1,089,403.37	1,074,348.90	07/01/2025	06/30/2026
30313327	45	MU	Cartersville	GA	4,360,941.80	632,928.96	505,873.10	Not Available	Not Available
30313328	46	MU	Temecula	CA	4,655,808.91	569,330.17	569,330.17	Not Available	Not Available
Reports Available at sf.citidirect.com		v. 21.09.28			Page 16 of 46			© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

NOI DETAIL

October 15, 2026


		Property			Ending	Preceding	Most	Most Recent	Most Recent
		Type			Scheduled	Fiscal	Recent	Financial As of	Financial Asof
Loan ID	OMCR	(1)	City	State	Balance	Year NOI	NOI	Start Date	End Date

30313330	48	LO	Richmond Hill	GA	2,944,718.43	433,041.69	565,895.21	Not Available	Not Available
30313331	49	RT	Grand Rapids	MI	3,218,105.80	399,530.64	535,354.39	Not Available	Not Available
30313284	5	OF	San Jose	CA	37,089,668.20	4,898,427.23	4,972,038.01	01/01/2026	06/30/2026
30313333	51	MH	Arvada	CO	2,730,868.67	627,808.03	680,451.13	Not Available	Not Available
30313335	53	RT	Willoughby	OH	2,664,875.29	304,441.47	288,987.44	01/01/2026	06/30/2026
30313336	54	RT	Duluth	GA	2,372,824.79	263,678.42	330,190.68	Not Available	Not Available
30313337	55	MF	Hartford	CT	2,034,346.53	429,256.84	420,339.14	Not Available	Not Available
30313338	56	RT	Dacula	GA	1,846,839.40	245,197.15	265,589.32	01/01/2026	06/30/2026
30313339	57	RT	Milford	IA	980,000.00	65,521.88	65,383.92	01/01/2026	06/30/2026
30313285	6	LO	Los Angeles	CA	33,384,563.24	10,706,331.20	11,036,137.18	01/01/2026	06/30/2026
30313288	7	LO	Louisville	KY	37,037,800.10	5,598,600.27	6,339,968.94	01/01/2026	06/30/2026
30313289	8	OF	Various	XX	29,515,384.55	18,294,729.49	17,469,074.78	01/01/2026	06/30/2026
30313290	9	OF	New York	NY	35,000,000.00	3,180,959.60	2,805,621.46	01/01/2026	06/30/2026
Total	Count = 45				729,726,956.04	170,627,803.33	160,607,237.47


Reports Available at sf.citidirect.com	v. 21.09.28	Page 17 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

DELINQUENCY LOAN DETAIL

October 15, 2026


		Actual	Paid	Current P&I	Total P&I	Cumulative	Other Expense	Payment Workout		Most Recent
		Principal	Through	Advances	Advances	Accrued Unpaid	Advances	Status	Strategy	Special Serv	Foreclosure	Bankruptcy	REO
Loan ID	OMCR	Balance	Date	(Net of ASER) Outstanding		Interest Advances	Outstanding	(2)	(3)	Transfer Date	Date	Date	Date

30313305	22	19,500,000.00	09/06/2026	75,245.63	75,245.62	-	-	B	0
30313319	37	6,297,117.34	07/06/2026	46,857.73	882,068.20	713,005.35	1,084,540.00	3	8	05/27/2020		09/18/2020
30313323	41	6,000,000.00	09/06/2026	25,887.50	25,887.50	-	-	B	0
30313331	49	3,224,274.46	09/06/2026	19,408.34	19,408.34	-	-	B	0
30313335	53	2,670,613.74	09/06/2026	17,144.19	17,188.70	-	-	B	0
30313290	9	35,000,000.00	09/06/2026	120,895.84	120,895.84	-	-	B	0
Total	Count = 6	72,692,005.54		305,439.23	1,140,694.20	713,005.35	1,084,540.00


Reports Available at sf.citidirect.com	v. 21.09.28	Page 18 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

COLLATERAL PERFORMANCE - DELINQUENCY AND LOAN STATUS DETAIL

October 15, 2026


				Delinquent
			(Does not include loans in Bankruptcy, Foreclosure, or REO)

		30 Day		60 Day		90 Day	120+ Day		Bankruptcy		Foreclosure			REO

Distribution

Date	Count	Balance	Count	Balance	Count	Balance	Count	Balance	Count	Balance	Count	Balance	Count		Balance


	0	0	1	6,237,082	0	0	0	0	0	0	0	0	0		0
10/15/2026
	0.0%	0.0%	2.2%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%		0.0%

	1	6,257,761	0	0	0	0	0	0	0	0	0	0	0		0
09/14/2026
	2.2%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%		0.0%

	1	6,277,482	0	0	0	0	0	0	0	0	0	0	0		0
08/14/2026
	2.2%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%		0.0%

	2	10,975,090	0	0	0	0	1	8,149,168	0	0	0	0	0		0
07/14/2026
	4.3%	0.0%	0.0%	0.0%	0.0%	0.0%	2.1%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%		0.0%

	0	0	0	0	1	6,317,546	1	8,166,185	0	0	0	0	0		0
06/12/2026
	0.0%	0.0%	0.0%	0.0%	2.1%	0.0%	2.1%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%		0.0%

	1	6,337,009	0	0	0	0	1	8,181,943	0	0	0	0	0		0
05/14/2026
	2.1%	0.0%	0.0%	0.0%	0.0%	0.0%	2.1%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%		0.0%

	1	6,357,272	0	0	0	0	1	8,198,818	0	0	0	0	0		0
04/14/2026
	2.1%	0.0%	0.0%	0.0%	0.0%	0.0%	2.1%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%		0.0%

	1	6,376,564	0	0	0	0	1	8,214,429	0	0	0	0	0		0
03/13/2026
	2.1%	0.0%	0.0%	0.0%	0.0%	0.0%	2.1%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%		0.0%

	1	6,398,441	0	0	0	0	1	8,233,549	0	0	0	0	0		0
02/13/2026
	2.1%	0.0%	0.0%	0.0%	0.0%	0.0%	2.1%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%		0.0%

	1	6,417,555	0	0	0	0	1	8,249,004	0	0	0	0	0		0
01/14/2026
	2.1%	0.0%	0.0%	0.0%	0.0%	0.0%	2.1%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%		0.0%

	1	6,436,587	0	0	0	0	1	8,264,389	0	0	0	0	0		0
12/12/2025
	2.1%	0.0%	0.0%	0.0%	0.0%	0.0%	2.1%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%		0.0%

	1	6,456,435	0	0	0	0	1	8,280,906	0	0	0	0	0		0
11/17/2025
	2.1%	0.0%	0.0%	0.0%	0.0%	0.0%	2.1%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%		0.0%


Reports Available at sf.citidirect.com	v. 21.09.28	Page 19 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

HISTORICAL APPRAISAL REDUCTION DETAIL

October 15, 2026


Distribution				Beginning	Ending	Appraisal	Appraisal	Most Recent	Cumulative
Date	Loan ID	OMCR	Property Name	Scheduled Balance Scheduled Balance Reduction Amount Reduction Date				ASER Amount	ASER Amount

10/15/2026	30313319	37	Holiday Inn Express & Suites	6,257,761.08	6,237,081.65	-	05/08/2023	-	8,137.04
9/14/2026	30313319	37	Holiday Inn Express & Suites	6,277,481.69	6,257,761.08	-	05/08/2023	-	8,137.04
8/14/2026	30313316	33	Courtyard Brunswick	8,149,168.08	-	-	02/09/2026	(9,332.41)	-
8/14/2026	30313319	37	Holiday Inn Express & Suites	6,297,117.34	6,277,481.69	-	05/08/2023	-	8,137.04
7/14/2026	30313316	33	Courtyard Brunswick	8,166,185.39	8,149,168.08	-	02/09/2026	-	9,332.41
7/14/2026	30313319	37	Holiday Inn Express & Suites	6,317,546.41	6,297,117.34	-	05/08/2023	-	8,137.04
6/12/2026	30313316	33	Courtyard Brunswick	8,181,942.97	8,166,185.39	-	02/09/2026	(18,380.95)	9,332.41
6/12/2026	30313319	37	Holiday Inn Express & Suites	6,337,009.44	6,317,546.41	-	05/08/2023	-	8,137.04
5/14/2026	30313316	33	Courtyard Brunswick	8,198,817.79	8,181,942.97	-	02/09/2026	-	27,713.36
5/14/2026	30313319	37	Holiday Inn Express & Suites	6,357,272.16	6,337,009.44	-	05/08/2023	-	8,137.04
4/14/2026	30313316	33	Courtyard Brunswick	8,214,428.78	8,198,817.79	-	02/09/2026	-	27,713.36
4/14/2026	30313319	37	Holiday Inn Express & Suites	6,376,564.04	6,357,272.16	-	05/08/2023	-	8,137.04
3/13/2026	30313316	33	Courtyard Brunswick	8,233,548.81	8,214,428.78	-	02/09/2026	-	27,713.36
3/13/2026	30313319	37	Holiday Inn Express & Suites	6,398,440.60	6,376,564.04	-	05/08/2023	-	8,137.04
2/13/2026	30313316	33	Courtyard Brunswick	8,249,003.79	8,233,548.81	-	02/09/2026	-	27,713.36
2/13/2026	30313319	37	Holiday Inn Express & Suites	6,417,555.10	6,398,440.60	-	05/08/2023	-	8,137.04
1/14/2026	30313316	33	Courtyard Brunswick	8,264,389.35	8,249,003.79	2,070,226.43	12/08/2025	9,332.41	27,713.36
1/14/2026	30313319	37	Holiday Inn Express & Suites	6,436,587.25	6,417,555.10	-	05/08/2023	-	8,137.04
12/12/2025	30313316	33	Courtyard Brunswick	8,280,905.72	8,264,389.35	2,070,226.43	12/08/2025	9,031.36	18,380.95
12/12/2025	30313319	37	Holiday Inn Express & Suites	6,456,434.73	6,436,587.25	-	05/08/2023	-	8,137.04
11/17/2025	30313316	33	Courtyard Brunswick	8,296,147.98	8,280,905.72	2,074,037.00	11/10/2025	9,349.59	9,349.59
11/17/2025	30313319	37	Holiday Inn Express & Suites	6,475,299.37	6,456,434.73	-	05/08/2023	-	8,137.04
10/15/2025	30313319	37	Holiday Inn Express & Suites	6,494,985.42	6,475,299.37	-	05/08/2023	-	8,137.04
9/12/2025	30313319	37	Holiday Inn Express & Suites	6,513,683.97	6,494,985.42	-	05/08/2023	-	8,137.04
8/14/2025	30313319	37	Holiday Inn Express & Suites	6,532,301.96	6,513,683.97	-	05/08/2023	-	8,137.04
7/14/2025	30313319	37	Holiday Inn Express & Suites	6,551,750.31	6,532,301.96	-	05/08/2023	-	8,137.04
6/13/2025	30313319	37	Holiday Inn Express & Suites	6,570,204.29	6,551,750.31	-	05/08/2023	-	8,137.04
5/14/2025	30313319	37	Holiday Inn Express & Suites	6,589,494.58	6,570,204.29	-	05/08/2023	-	8,137.04
4/14/2025	30313319	37	Holiday Inn Express & Suites	6,607,785.94	6,589,494.58	-	05/08/2023	-	8,137.04
3/14/2025	30313319	37	Holiday Inn Express & Suites	6,628,762.33	6,607,785.94	-	05/08/2023	-	8,137.04
2/14/2025	30313319	37	Holiday Inn Express & Suites	6,646,884.51	6,628,762.33	-	05/08/2023	-	8,137.04
1/15/2025	30313319	37	Holiday Inn Express & Suites	6,664,928.61	6,646,884.51	-	05/08/2023	-	8,137.04
12/13/2024	30313319	37	Holiday Inn Express & Suites	6,683,823.90	6,664,928.61	-	05/08/2023	-	8,137.04


Reports Available at sf.citidirect.com	v. 21.09.28	Page 21 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

HISTORICAL APPRAISAL REDUCTION DETAIL

October 15, 2026


Distribution				Beginning	Ending	Appraisal	Appraisal	Most Recent	Cumulative
Date	Loan ID	OMCR	Property Name	Scheduled Balance Scheduled Balance Reduction Amount Reduction Date				ASER Amount	ASER Amount

11/15/2024	30313319	37	Holiday Inn Express & Suites	6,701,708.85	6,683,823.90	-	05/08/2023	-	8,137.04
10/15/2024	30313319	37	Holiday Inn Express & Suites	6,720,450.76	6,701,708.85	-	05/08/2023	-	8,137.04
9/13/2024	30313319	37	Holiday Inn Express & Suites	6,738,177.90	6,720,450.76	-	05/08/2023	-	8,137.04
8/14/2024	30313319	37	Holiday Inn Express & Suites	6,755,828.67	6,738,177.90	-	05/08/2023	-	8,137.04
7/12/2024	30313319	37	Holiday Inn Express & Suites	6,774,344.90	6,755,828.67	-	05/08/2023	-	8,137.04
6/14/2024	30313319	37	Holiday Inn Express & Suites	6,791,839.84	6,774,344.90	-	05/08/2023	-	8,137.04
5/14/2024	30313319	37	Holiday Inn Express & Suites	6,810,205.90	6,791,839.84	-	05/08/2023	-	8,137.04
4/12/2024	30313319	37	Holiday Inn Express & Suites	6,827,546.34	6,810,205.90	-	05/08/2023	-	8,137.04
3/14/2024	30313319	37	Holiday Inn Express & Suites	6,846,715.21	6,827,546.34	-	05/08/2023	-	8,137.04
2/14/2024	30313319	37	Holiday Inn Express & Suites	6,863,898.35	6,846,715.21	-	05/08/2023	-	8,137.04
1/12/2024	30313319	37	Holiday Inn Express & Suites	6,881,007.46	6,863,898.35	-	05/08/2023	-	8,137.04
12/14/2023	30313319	37	Holiday Inn Express & Suites	6,899,001.69	6,881,007.46	-	05/08/2023	-	8,137.04
11/14/2023	30313319	37	Holiday Inn Express & Suites	6,915,959.56	6,899,001.69	-	05/08/2023	-	8,137.04
10/16/2023	30313319	37	Holiday Inn Express & Suites	6,933,808.04	6,915,959.56	-	05/08/2023	-	8,137.04
9/14/2023	30313319	37	Holiday Inn Express & Suites	6,950,615.95	6,933,808.04	-	05/08/2023	-	8,137.04
8/14/2023	30313319	37	Holiday Inn Express & Suites	6,967,351.44	6,950,615.95	-	05/08/2023	(14,933.88)	8,137.04
7/14/2023	30313319	37	Holiday Inn Express & Suites	6,984,985.61	6,967,351.44	-	05/08/2023	-	23,070.92
6/14/2023	30313319	37	Holiday Inn Express & Suites	7,001,573.02	6,984,985.61	-	05/08/2023	-	23,070.92
5/12/2023	30313319	37	Holiday Inn Express & Suites	7,019,064.49	7,001,573.02	-	05/08/2023	-	23,070.92
4/14/2023	30313319	37	Holiday Inn Express & Suites	7,035,505.07	7,019,064.49	-	04/08/2022	-	23,070.92
3/14/2023	30313319	37	Holiday Inn Express & Suites	7,054,816.30	7,035,505.07	-	04/08/2022	-	23,070.92
2/14/2023	30313319	37	Holiday Inn Express & Suites	7,071,102.85	7,054,816.30	-	04/08/2022	-	23,070.92
1/13/2023	30313319	37	Holiday Inn Express & Suites	7,087,319.23	7,071,102.85	-	04/08/2022	-	23,070.92
12/14/2022	30313319	37	Holiday Inn Express & Suites	7,104,453.13	7,087,319.23	-	04/08/2022	-	23,070.92
11/15/2022	30313319	37	Holiday Inn Express & Suites	7,120,525.82	7,104,453.13	-	04/08/2022	-	23,070.92
10/17/2022	30313319	37	Holiday Inn Express & Suites	7,137,521.25	7,120,525.82	-	04/08/2022	-	23,070.92
9/14/2022	30313319	37	Holiday Inn Express & Suites	7,153,451.47	7,137,521.25	-	04/08/2022	-	23,070.92
8/12/2022	30313319	37	Holiday Inn Express & Suites	7,169,313.05	7,153,451.47	-	04/08/2022	-	23,070.92
7/14/2022	30313319	37	Holiday Inn Express & Suites	7,186,105.04	7,169,313.05	-	04/08/2022	-	23,070.92
6/14/2022	30313319	37	Holiday Inn Express & Suites	7,201,825.94	7,186,105.04	-	04/08/2022	-	23,070.92
5/13/2022	30313319	37	Holiday Inn Express & Suites	7,218,482.35	7,201,825.94	-	04/08/2022	-	23,070.92
4/14/2022	30313319	37	Holiday Inn Express & Suites	7,234,063.75	7,218,482.35	-	04/08/2022	-	23,070.92
3/14/2022	30313319	37	Holiday Inn Express & Suites	7,252,601.96	7,234,063.75	1,813,150.49	03/08/2022	7,079.35	23,070.92


Reports Available at sf.citidirect.com	v. 21.09.28	Page 22 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

HISTORICAL APPRAISAL REDUCTION DETAIL

October 15, 2026


Distribution				Beginning	Ending	Appraisal	Appraisal	Most Recent	Cumulative
Date	Loan ID	OMCR	Property Name	Scheduled Balance Scheduled Balance Reduction Amount Reduction Date				ASER Amount	ASER Amount

2/14/2022	30313319	37	Holiday Inn Express & Suites	7,268,036.36	7,252,601.96	1,817,009.09	02/08/2022	7,854.53	15,991.57
1/14/2022	30313319	37	Holiday Inn Express & Suites	7,283,404.26	7,268,036.36	-	01/10/2022	-	8,137.04
12/14/2021	30313282	3	Godfrey Hotel	44,994,086.53	44,994,086.53	-	06/08/2021	-	-
12/14/2021	30313319	37	Holiday Inn Express & Suites	7,299,720.48	7,283,404.26	-	12/08/2021	-	8,137.04
11/15/2021	30313319	37	Holiday Inn Express & Suites	7,314,951.87	7,299,720.48	-	11/08/2021	-	8,137.04
10/15/2021	30313319	37	Holiday Inn Express & Suites	7,331,136.54	7,314,951.87	-	10/08/2020	-	8,137.04
9/14/2021	30313319	37	Holiday Inn Express & Suites	7,346,232.58	7,331,136.54	-	10/08/2020	-	8,137.04
8/13/2021	30313319	37	Holiday Inn Express & Suites	7,361,263.58	7,346,232.58	-	10/08/2020	-	8,137.04
7/14/2021	30313319	37	Holiday Inn Express & Suites	7,377,255.12	7,361,263.58	-	10/08/2020	-	8,137.04
6/14/2021	30313282	3	Godfrey Hotel	44,926,231.75	44,864,286.34	-	06/08/2021	-	-
6/14/2021	30313319	37	Holiday Inn Express & Suites	7,392,152.46	7,377,255.12	-	10/08/2020	-	8,137.04
5/14/2021	30313282	3	Godfrey Hotel	44,994,086.53	44,926,231.75	-	05/10/2021	-	-
5/14/2021	30313319	37	Holiday Inn Express & Suites	7,408,015.20	7,392,152.46	-	10/08/2020	-	8,137.04
4/14/2021	30313319	37	Holiday Inn Express & Suites	7,422,780.01	7,408,015.20	-	10/08/2020	-	8,137.04
3/12/2021	30313319	37	Holiday Inn Express & Suites	7,440,583.53	7,422,780.01	-	10/08/2020	-	8,137.04
2/12/2021	30313319	37	Holiday Inn Express & Suites	7,455,208.02	7,440,583.53	-	10/08/2020	-	8,137.04
1/14/2021	30313319	37	Holiday Inn Express & Suites	7,469,769.50	7,455,208.02	-	10/08/2020	-	8,137.04
12/14/2020	30313319	37	Holiday Inn Express & Suites	7,485,308.57	7,469,769.50	-	10/08/2020	-	8,137.04
11/16/2020	30313319	37	Holiday Inn Express & Suites	7,499,740.37	7,485,308.57	-	10/08/2020	-	8,137.04
10/15/2020	30313319	37	Holiday Inn Express & Suites	7,515,154.46	7,499,740.37	-	10/08/2020	-	8,137.04
9/14/2020	30313319	37	Holiday Inn Express & Suites	7,529,457.67	7,515,154.46	1,882,364.42	09/08/2020	8,137.04	8,137.04


Reports Available at sf.citidirect.com	v. 21.09.28	Page 23 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

HISTORICAL LOAN MODIFICATION DETAIL

October 15, 2026


Distribution				Modification	Modification
Date	Loan ID	OMCR	Property Name	Date	Code (4)

10/15/2026	30313311	28	Hotel Normandie	10/06/2020	8
10/15/2026	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
10/15/2026	30313285	6	Marriott Lax	02/25/2022	8
10/15/2026	30313290	9	50 Varick	05/06/2020	8
09/14/2026	30313311	28	Hotel Normandie	10/06/2020	8
09/14/2026	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
09/14/2026	30313285	6	Marriott Lax	02/25/2022	8
09/14/2026	30313290	9	50 Varick	05/06/2020	8
08/14/2026	30313311	28	Hotel Normandie	10/06/2020	8
08/14/2026	30313316	33	Courtyard Brunswick	09/30/2020	8
08/14/2026	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
08/14/2026	30313285	6	Marriott Lax	02/25/2022	8
08/14/2026	30313290	9	50 Varick	05/06/2020	8
07/14/2026	30313311	28	Hotel Normandie	10/06/2020	8
07/14/2026	30313316	33	Courtyard Brunswick	09/30/2020	8
07/14/2026	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
07/14/2026	30313285	6	Marriott Lax	02/25/2022	8
07/14/2026	30313290	9	50 Varick	05/06/2020	8
06/12/2026	30313311	28	Hotel Normandie	10/06/2020	8
06/12/2026	30313316	33	Courtyard Brunswick	09/30/2020	8
06/12/2026	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
06/12/2026	30313285	6	Marriott Lax	02/25/2022	8
06/12/2026	30313290	9	50 Varick	05/06/2020	8
05/14/2026	30313311	28	Hotel Normandie	10/06/2020	8
05/14/2026	30313316	33	Courtyard Brunswick	09/30/2020	8
05/14/2026	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
05/14/2026	30313285	6	Marriott Lax	02/25/2022	8
05/14/2026	30313290	9	50 Varick	05/06/2020	8
04/14/2026	30313311	28	Hotel Normandie	10/06/2020	8
04/14/2026	30313316	33	Courtyard Brunswick	09/30/2020	8
04/14/2026	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
04/14/2026	30313285	6	Marriott Lax	02/25/2022	8


04/14/2026	30313290		9 50 Varick		05/06/2020	8
Reports Available at sf.citidirect.com		v. 21.09.28		Page 25 of 46		© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

HISTORICAL LOAN MODIFICATION DETAIL

October 15, 2026


Distribution				Modification	Modification
Date	Loan ID	OMCR	Property Name	Date	Code (4)

03/13/2026	30313311	28	Hotel Normandie	10/06/2020	8
03/13/2026	30313316	33	Courtyard Brunswick	09/30/2020	8
03/13/2026	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
03/13/2026	30313285	6	Marriott Lax	02/25/2022	8
03/13/2026	30313290	9	50 Varick	05/06/2020	8
02/13/2026	30313311	28	Hotel Normandie	10/06/2020	8
02/13/2026	30313316	33	Courtyard Brunswick	09/30/2020	8
02/13/2026	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
02/13/2026	30313285	6	Marriott Lax	02/25/2022	8
02/13/2026	30313290	9	50 Varick	05/06/2020	8
01/14/2026	30313311	28	Hotel Normandie	10/06/2020	8
01/14/2026	30313316	33	Courtyard Brunswick	09/30/2020	8
01/14/2026	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
01/14/2026	30313285	6	Marriott Lax	02/25/2022	8
01/14/2026	30313290	9	50 Varick	05/06/2020	8
12/12/2025	30313311	28	Hotel Normandie	10/06/2020	8
12/12/2025	30313316	33	Courtyard Brunswick	09/30/2020	8
12/12/2025	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
12/12/2025	30313285	6	Marriott Lax	02/25/2022	8
12/12/2025	30313290	9	50 Varick	05/06/2020	8
11/17/2025	30313311	28	Hotel Normandie	10/06/2020	8
11/17/2025	30313316	33	Courtyard Brunswick	09/30/2020	8
11/17/2025	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
11/17/2025	30313285	6	Marriott Lax	02/25/2022	8
11/17/2025	30313290	9	50 Varick	05/06/2020	8
10/15/2025	30313311	28	Hotel Normandie	10/06/2020	8
10/15/2025	30313316	33	Courtyard Brunswick	09/30/2020	8
10/15/2025	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
10/15/2025	30313285	6	Marriott Lax	02/25/2022	8
10/15/2025	30313290	9	50 Varick	05/06/2020	8
09/12/2025	30313311	28	Hotel Normandie	10/06/2020	8
09/12/2025	30313316	33	Courtyard Brunswick	09/30/2020	8
09/12/2025	30313319	37	Holiday Inn Express & Suites	12/22/2022	8


Reports Available at sf.citidirect.com	v. 21.09.28	Page 26 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

HISTORICAL LOAN MODIFICATION DETAIL

October 15, 2026


Distribution				Modification	Modification
Date	Loan ID	OMCR	Property Name	Date	Code (4)

09/12/2025	30313285	6	Marriott Lax	02/25/2022	8
09/12/2025	30313290	9	50 Varick	05/06/2020	8
08/14/2025	30313311	28	Hotel Normandie	10/06/2020	8
08/14/2025	30313316	33	Courtyard Brunswick	09/30/2020	8
08/14/2025	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
08/14/2025	30313285	6	Marriott Lax	02/25/2022	8
08/14/2025	30313290	9	50 Varick	05/06/2020	8
07/14/2025	30313311	28	Hotel Normandie	10/06/2020	8
07/14/2025	30313316	33	Courtyard Brunswick	09/30/2020	8
07/14/2025	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
07/14/2025	30313285	6	Marriott Lax	02/25/2022	8
07/14/2025	30313290	9	50 Varick	05/06/2020	8
06/13/2025	30313311	28	Hotel Normandie	10/06/2020	8
06/13/2025	30313316	33	Courtyard Brunswick	09/30/2020	8
06/13/2025	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
06/13/2025	30313285	6	Marriott Lax	02/25/2022	8
06/13/2025	30313290	9	50 Varick	05/06/2020	8
05/14/2025	30313311	28	Hotel Normandie	10/06/2020	8
05/14/2025	30313316	33	Courtyard Brunswick	09/30/2020	8
05/14/2025	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
05/14/2025	30313285	6	Marriott Lax	02/25/2022	8
05/14/2025	30313290	9	50 Varick	05/06/2020	8
04/14/2025	30313311	28	Hotel Normandie	10/06/2020	8
04/14/2025	30313316	33	Courtyard Brunswick	09/30/2020	8
04/14/2025	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
04/14/2025	30313285	6	Marriott Lax	02/25/2022	8
04/14/2025	30313290	9	50 Varick	05/06/2020	8
03/14/2025	30313311	28	Hotel Normandie	10/06/2020	8
03/14/2025	30313316	33	Courtyard Brunswick	09/30/2020	8
03/14/2025	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
03/14/2025	30313285	6	Marriott Lax	02/25/2022	8
03/14/2025	30313290	9	50 Varick	05/06/2020	8
02/14/2025	30313311	28	Hotel Normandie	10/06/2020	8


Reports Available at sf.citidirect.com	v. 21.09.28	Page 27 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

HISTORICAL LOAN MODIFICATION DETAIL

October 15, 2026


Distribution				Modification	Modification
Date	Loan ID	OMCR	Property Name	Date	Code (4)

02/14/2025	30313316	33	Courtyard Brunswick	09/30/2020	8
02/14/2025	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
02/14/2025	30313285	6	Marriott Lax	02/25/2022	8
02/14/2025	30313290	9	50 Varick	05/06/2020	8
01/15/2025	30313311	28	Hotel Normandie	10/06/2020	8
01/15/2025	30313316	33	Courtyard Brunswick	09/30/2020	8
01/15/2025	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
01/15/2025	30313285	6	Marriott Lax	02/25/2022	8
01/15/2025	30313290	9	50 Varick	05/06/2020	8
12/13/2024	30313311	28	Hotel Normandie	10/06/2020	8
12/13/2024	30313316	33	Courtyard Brunswick	09/30/2020	8
12/13/2024	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
12/13/2024	30313285	6	Marriott Lax	02/25/2022	8
12/13/2024	30313290	9	50 Varick	05/06/2020	8
11/15/2024	30313311	28	Hotel Normandie	10/06/2020	8
11/15/2024	30313316	33	Courtyard Brunswick	09/30/2020	8
11/15/2024	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
11/15/2024	30313285	6	Marriott Lax	02/25/2022	8
11/15/2024	30313290	9	50 Varick	05/06/2020	8
10/15/2024	30313311	28	Hotel Normandie	10/06/2020	8
10/15/2024	30313316	33	Courtyard Brunswick	09/30/2020	8
10/15/2024	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
10/15/2024	30313285	6	Marriott Lax	02/25/2022	8
10/15/2024	30313290	9	50 Varick	05/06/2020	8
09/13/2024	30313311	28	Hotel Normandie	10/06/2020	8
09/13/2024	30313316	33	Courtyard Brunswick	09/30/2020	8
09/13/2024	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
09/13/2024	30313285	6	Marriott Lax	02/25/2022	8
09/13/2024	30313290	9	50 Varick	05/06/2020	8
08/14/2024	30313311	28	Hotel Normandie	10/06/2020	8
08/14/2024	30313316	33	Courtyard Brunswick	09/30/2020	8
08/14/2024	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
08/14/2024	30313285	6	Marriott Lax	02/25/2022	8


Reports Available at sf.citidirect.com	v. 21.09.28	Page 28 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

HISTORICAL LOAN MODIFICATION DETAIL

October 15, 2026


Distribution				Modification	Modification
Date	Loan ID	OMCR	Property Name	Date	Code (4)

08/14/2024	30313290	9	50 Varick	05/06/2020	8
07/12/2024	30313311	28	Hotel Normandie	10/06/2020	8
07/12/2024	30313316	33	Courtyard Brunswick	09/30/2020	8
07/12/2024	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
07/12/2024	30313285	6	Marriott Lax	02/25/2022	8
07/12/2024	30313290	9	50 Varick	05/06/2020	8
06/14/2024	30313311	28	Hotel Normandie	10/06/2020	8
06/14/2024	30313316	33	Courtyard Brunswick	09/30/2020	8
06/14/2024	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
06/14/2024	30313285	6	Marriott Lax	02/25/2022	8
06/14/2024	30313290	9	50 Varick	05/06/2020	8
05/14/2024	30313311	28	Hotel Normandie	10/06/2020	8
05/14/2024	30313316	33	Courtyard Brunswick	09/30/2020	8
05/14/2024	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
05/14/2024	30313285	6	Marriott Lax	02/25/2022	8
05/14/2024	30313290	9	50 Varick	05/06/2020	8
04/12/2024	30313311	28	Hotel Normandie	10/06/2020	8
04/12/2024	30313316	33	Courtyard Brunswick	09/30/2020	8
04/12/2024	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
04/12/2024	30313285	6	Marriott Lax	02/25/2022	8
04/12/2024	30313290	9	50 Varick	05/06/2020	8
03/14/2024	30313311	28	Hotel Normandie	10/06/2020	8
03/14/2024	30313316	33	Courtyard Brunswick	09/30/2020	8
03/14/2024	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
03/14/2024	30313285	6	Marriott Lax	02/25/2022	8
03/14/2024	30313290	9	50 Varick	05/06/2020	8
02/14/2024	30313311	28	Hotel Normandie	10/06/2020	8
02/14/2024	30313316	33	Courtyard Brunswick	09/30/2020	8
02/14/2024	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
02/14/2024	30313285	6	Marriott Lax	02/25/2022	8
02/14/2024	30313290	9	50 Varick	05/06/2020	8
01/12/2024	30313311	28	Hotel Normandie	10/06/2020	8
01/12/2024	30313316	33	Courtyard Brunswick	09/30/2020	8


Reports Available at sf.citidirect.com	v. 21.09.28	Page 29 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

HISTORICAL LOAN MODIFICATION DETAIL

October 15, 2026


Distribution				Modification	Modification
Date	Loan ID	OMCR	Property Name	Date	Code (4)

01/12/2024	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
01/12/2024	30313285	6	Marriott Lax	02/25/2022	8
01/12/2024	30313290	9	50 Varick	05/06/2020	8
12/14/2023	30313311	28	Hotel Normandie	10/06/2020	8
12/14/2023	30313316	33	Courtyard Brunswick	09/30/2020	8
12/14/2023	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
12/14/2023	30313285	6	Marriott Lax	02/25/2022	8
12/14/2023	30313290	9	50 Varick	05/06/2020	8
11/14/2023	30313311	28	Hotel Normandie	10/06/2020	8
11/14/2023	30313316	33	Courtyard Brunswick	09/30/2020	8
11/14/2023	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
11/14/2023	30313285	6	Marriott Lax	02/25/2022	8
11/14/2023	30313290	9	50 Varick	05/06/2020	8
10/16/2023	30313311	28	Hotel Normandie	10/06/2020	8
10/16/2023	30313316	33	Courtyard Brunswick	09/30/2020	8
10/16/2023	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
10/16/2023	30313285	6	Marriott Lax	02/25/2022	8
10/16/2023	30313290	9	50 Varick	05/06/2020	8
09/14/2023	30313311	28	Hotel Normandie	10/06/2020	8
09/14/2023	30313316	33	Courtyard Brunswick	09/30/2020	8
09/14/2023	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
09/14/2023	30313285	6	Marriott Lax	02/25/2022	8
09/14/2023	30313290	9	50 Varick	05/06/2020	8
08/14/2023	30313311	28	Hotel Normandie	10/06/2020	8
08/14/2023	30313316	33	Courtyard Brunswick	09/30/2020	8
08/14/2023	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
08/14/2023	30313285	6	Marriott Lax	02/25/2022	8
08/14/2023	30313290	9	50 Varick	05/06/2020	8
07/14/2023	30313311	28	Hotel Normandie	10/06/2020	8
07/14/2023	30313316	33	Courtyard Brunswick	09/30/2020	8
07/14/2023	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
07/14/2023	30313285	6	Marriott Lax	02/25/2022	8
07/14/2023	30313290	9	50 Varick	05/06/2020	8


Reports Available at sf.citidirect.com	v. 21.09.28	Page 30 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

HISTORICAL LOAN MODIFICATION DETAIL

October 15, 2026


Distribution				Modification	Modification
Date	Loan ID	OMCR	Property Name	Date	Code (4)

06/14/2023	30313311	28	Hotel Normandie	10/06/2020	8
06/14/2023	30313316	33	Courtyard Brunswick	09/30/2020	8
06/14/2023	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
06/14/2023	30313285	6	Marriott Lax	02/25/2022	8
06/14/2023	30313290	9	50 Varick	05/06/2020	8
05/12/2023	30313311	28	Hotel Normandie	10/06/2020	8
05/12/2023	30313316	33	Courtyard Brunswick	09/30/2020	8
05/12/2023	30313319	37	Holiday Inn Express & Suites	12/22/2022	8
05/12/2023	30313285	6	Marriott Lax	02/25/2022	8
05/12/2023	30313290	9	50 Varick	05/06/2020	8
04/14/2023	30313311	28	Hotel Normandie	10/06/2020	8
04/14/2023	30313316	33	Courtyard Brunswick	09/30/2020	8
04/14/2023	30313285	6	Marriott Lax	02/25/2022	8
04/14/2023	30313290	9	50 Varick	05/06/2020	8
03/14/2023	30313311	28	Hotel Normandie	10/06/2020	8
03/14/2023	30313316	33	Courtyard Brunswick	09/30/2020	8
03/14/2023	30313285	6	Marriott Lax	02/25/2022	8
03/14/2023	30313290	9	50 Varick	05/06/2020	8
02/14/2023	30313311	28	Hotel Normandie	10/06/2020	8
02/14/2023	30313316	33	Courtyard Brunswick	09/30/2020	8
02/14/2023	30313285	6	Marriott Lax	02/25/2022	8
02/14/2023	30313290	9	50 Varick	05/06/2020	8
01/13/2023	30313311	28	Hotel Normandie	10/06/2020	8
01/13/2023	30313316	33	Courtyard Brunswick	09/30/2020	8
01/13/2023	30313285	6	Marriott Lax	02/25/2022	8
01/13/2023	30313290	9	50 Varick	05/06/2020	8
12/14/2022	30313311	28	Hotel Normandie	10/06/2020	8
12/14/2022	30313316	33	Courtyard Brunswick	09/30/2020	8
12/14/2022	30313285	6	Marriott Lax	02/25/2022	8
12/14/2022	30313290	9	50 Varick	05/06/2020	8
11/15/2022	30313311	28	Hotel Normandie	10/06/2020	8
11/15/2022	30313316	33	Courtyard Brunswick	09/30/2020	8
11/15/2022	30313285	6	Marriott Lax	02/25/2022	8


Reports Available at sf.citidirect.com	v. 21.09.28	Page 31 of 46	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-C4

Commercial Mortgage Pass-Through Certificates, Series 2017-C4

HISTORICAL LOAN MODIFICATION DETAIL

October 15, 2026

Modification

Code (4)


Distribution				Modification
Date	Loan ID	OMCR	Property Name	Date

11/15/2022	30313290	9	50 Varick	05/06/2020	8
10/17/2022	30313311	28	Hotel Normandie	10/06/2020	8
10/17/2022	30313316	33	Courtyard Brunswick	09/30/2020	8
10/17/2022	30313285	6	Marriott Lax	02/25/2022	8
10/17/2022	30313290	9	50 Varick	05/06/2020	8
09/14/2022	30313311	28	Hotel Normandie	10/06/2020	8
09/14/2022	30313316	33	Courtyard Brunswick	09/30/2020	8
09/14/2022	30313285	6	Marriott Lax	02/25/2022	8
09/14/2022	30313290	9	50 Varick	05/06/2020	8
08/12/2022	30313311	28	Hotel Normandie	10/06/2020	8
08/12/2022	30313282	3	Godfrey Hotel	05/06/2021	8
08/12/2022	30313316	33	Courtyard Brunswick	09/30/2020	8
08/12/2022	30313285	6	Marriott Lax	02/25/2022	8
08/12/2022	30313290	9	50 Varick	05/06/2020	8
07/14/2022	30313311	28	Hotel Normandie	10/06/2020	8
07/14/2022	30313282	3	Godfrey Hotel	05/06/2021	8
07/14/2022	30313316	33	Courtyard Brunswick	09/30/2020	8
07/14/2022	30313285	6	Marriott Lax	02/25/2022	8
07/14/2022	30313290	9	50 Varick	05/06/2020	8
06/14/2022	30313311	28	Hotel Normandie	10/06/2020	8
06/14/2022	30313282	3	Godfrey Hotel	05/06/2021	8
06/14/2022	30313316	33	Courtyard Brunswick	09/30/2020	8
06/14/2022	30313285	6	Marriott Lax	02/25/2022	8
06/14/2022	30313290	9	50 Varick	05/06/2020	8
05/13/2022	30313311	28	Hotel Normandie	10/06/2020	8
05/13/2022	30313282	3	Godfrey Hotel	05/06/2021	8
05/13/2022	30313316	33	Courtyard Brunswick	09/30/2020	8
05/13/2022	30313285	6	Marriott Lax	02/25/2022	8
05/13/2022	30313290	9	50 Varick	05/06/2020	8
04/14/2022	30313311	28	Hotel Normandie	10/06/2020	8
04/14/2022	30313282	3	Godfrey Hotel	05/06/2021	8
04/14/2022	30313316	33	Courtyard Brunswick	09/30/2020	8
04/14/2022	30313290	9	50 Varick	05/06/2020	8


Reports Available at sf.citidirect.com	v. 21.09.28	Page 32 of 46	© Copyright 2026 Citigroup


Citigroup Commercial Mortgage Trust 2017-C4
Commercial Mortgage Pass-Through Certificates, Series 2017-C4						October 15, 2026

HISTORICAL LOAN MODIFICATION DETAIL


Distribution					Modification	Modification
Date	Loan ID		OMCR	Property Name	Date	Code (4)

03/14/2022	30313311		28	Hotel Normandie	10/06/2020	8
03/14/2022	30313282		3	Godfrey Hotel	05/06/2021	8
03/14/2022	30313316		33	Courtyard Brunswick	09/30/2020	8
03/14/2022	30313290		9	50 Varick	05/06/2020	8
02/14/2022	30313311		28	Hotel Normandie	10/06/2020	8
02/14/2022	30313282		3	Godfrey Hotel	05/06/2021	8
02/14/2022	30313316		33	Courtyard Brunswick	09/30/2020	8
02/14/2022	30313290		9	50 Varick	05/06/2020	8
01/14/2022	30313311		28	Hotel Normandie	10/06/2020	8
01/14/2022	30313282		3	Godfrey Hotel	05/06/2021	8
01/14/2022	30313316		33	Courtyard Brunswick	09/30/2020	8
01/14/2022	30313290		9	50 Varick	05/06/2020	8
12/14/2021	30313311		28	Hotel Normandie	10/06/2020	8
12/14/2021	30313282		3	Godfrey Hotel	05/06/2021	8
12/14/2021	30313316		33	Courtyard Brunswick	09/30/2020	8
12/14/2021	30313290		9	50 Varick	05/06/2020	8
11/15/2021	30313311		28	Hotel Normandie	10/06/2020	8
11/15/2021	30313282		3	Godfrey Hotel	05/06/2021	8
11/15/2021	30313316		33	Courtyard Brunswick	09/30/2020	8
11/15/2021	30313290		9	50 Varick	05/06/2020	8
10/15/2021	30313311		28	Hotel Normandie	10/06/2020	8
10/15/2021	30313282		3	Godfrey Hotel	05/06/2021	8
10/15/2021	30313316		33	Courtyard Brunswick	09/30/2020	8
10/15/2021	30313290		9	50 Varick	05/06/2020	8
09/14/2021	30313311		28	Hotel Normandie	10/06/2020	8
09/14/2021	30313282		3	Godfrey Hotel	05/06/2021	8
09/14/2021	30313316		33	Courtyard Brunswick	09/30/2020	8
09/14/2021	30313290		9	50 Varick	05/06/2020	8
08/13/2021	30313311		28	Hotel Normandie	10/06/2020	8
08/13/2021	30313282		3	Godfrey Hotel	05/06/2021	8
08/13/2021	30313316		33	Courtyard Brunswick	09/30/2020	8
08/13/2021	30313290		9	50 Varick	05/06/2020	8
07/14/2021	30313311		28	Hotel Normandie	10/06/2020	8
Reports Available at sf.citidirect.com		v. 21.09.28		Page 33 of 46		© Copyright 2026 Citigroup


Citigroup Commercial Mortgage Trust 2017-C4
Commercial Mortgage Pass-Through Certificates, Series 2017-C4						October 15, 2026

HISTORICAL LOAN MODIFICATION DETAIL


Distribution					Modification	Modification
Date	Loan ID		OMCR	Property Name	Date	Code (4)

07/14/2021	30313282		3	Godfrey Hotel	05/19/2021	8
07/14/2021	30313290		9	50 Varick	05/06/2020	8
06/14/2021	30313311		28	Hotel Normandie	10/06/2020	8
06/14/2021	30313282		3	Godfrey Hotel	05/06/2020	8
06/14/2021	30313290		9	50 Varick	05/06/2020	8
05/14/2021	30313311		28	Hotel Normandie	10/06/2020	8
05/14/2021	30313282		3	Godfrey Hotel	05/06/2020	8
05/14/2021	30313290		9	50 Varick	05/06/2020	8
04/14/2021	30313311		28	Hotel Normandie	10/06/2020	8
04/14/2021	30313282		3	Godfrey Hotel	05/06/2020	8
04/14/2021	30313290		9	50 Varick	05/06/2020	8
03/12/2021	30313311		28	Hotel Normandie	10/06/2020	8
03/12/2021	30313282		3	Godfrey Hotel	05/06/2020	8
03/12/2021	30313290		9	50 Varick	05/06/2020	8
02/12/2021	30313311		28	Hotel Normandie	10/06/2020	8
02/12/2021	30313282		3	Godfrey Hotel	05/06/2020	8
02/12/2021	30313290		9	50 Varick	05/06/2020	8
01/14/2021	30313311		28	Hotel Normandie	10/06/2020	8
01/14/2021	30313282		3	Godfrey Hotel	05/06/2020	8
01/14/2021	30313290		9	50 Varick	05/06/2020	8
12/14/2020	30313311		28	Hotel Normandie	10/06/2020	8
12/14/2020	30313282		3	Godfrey Hotel	05/06/2020	8
12/14/2020	30313290		9	50 Varick	05/06/2020	8
11/16/2020	30313311		28	Hotel Normandie	10/06/2020	8
11/16/2020	30313282		3	Godfrey Hotel	05/06/2020	8
11/16/2020	30313290		9	50 Varick	05/06/2020	8
10/15/2020	30313311		28	Hotel Normandie	04/06/2020	8
10/15/2020	30313282		3	Godfrey Hotel	05/06/2020	8
10/15/2020	30313290		9	50 Varick	05/06/2020	8
09/14/2020	30313311		28	Hotel Normandie	04/06/2020	8
09/14/2020	30313282		3	Godfrey Hotel	05/06/2020	8
09/14/2020	30313290		9	50 Varick	05/06/2020	8
08/14/2020	30313311		28	Hotel Normandie	04/06/2020	8
Reports Available at sf.citidirect.com		v. 21.09.28		Page 34 of 46		© Copyright 2026 Citigroup


Citigroup Commercial Mortgage Trust 2017-C4
Commercial Mortgage Pass-Through Certificates, Series 2017-C4									October 15, 2026

HISTORICAL SPECIALLY SERVICED LOANS


				Special Servicing	Ending	Ending	Most	Most Recent	Most Recent	Most Recent
Distribution			Workout	Fee Amount	Scheduled	Actual	Recent	Valuation	Special Servicer Master Servicer
Date	Loan ID	OMCR	Strategy (3)	Plus Adjustments	Balance	Balance	Value	Date	Transfer Date	Return Date

12/14/2021	30313282	3	8	3,500.00	44,994,086.53	44,994,086.53	71,000,000.00	11/01/2020	09/09/2020	11/04/2021
11/15/2021	30313282	3	1	(63,791.51)	44,994,086.53	44,994,086.53	71,000,000.00	11/01/2020	09/09/2020
10/15/2021	30313282	3	1	9,373.77	44,994,086.53	44,994,086.53	71,000,000.00	11/01/2020	09/09/2020
09/14/2021	30313282	3	1	9,686.23	44,994,086.53	44,994,086.53	71,000,000.00	11/01/2020	09/09/2020
08/13/2021	30313282	3	1	9,686.23	44,994,086.53	44,994,086.53	71,000,000.00	11/01/2020	09/09/2020
07/14/2021	30313282	3	1	(312.46)	44,994,086.53	44,994,086.53	71,000,000.00	11/01/2020	09/09/2020
06/14/2021	30313282	3	1	9,671.62	44,864,286.34	45,383,006.43	71,000,000.00	11/01/2020	09/09/2020
05/14/2021	30313282	3	1	9,373.77	44,926,231.75	45,383,006.43	71,000,000.00	11/01/2020	09/09/2020
04/14/2021	30313282	3	1	9,699.44	44,994,086.53	45,383,006.43	101,400,000.00	03/28/2017	09/09/2020
03/12/2021	30313282	3	1	8,776.29	45,055,479.91	45,567,645.58	101,400,000.00	03/28/2017	09/09/2020
02/12/2021	30313282	3	1	9,729.69	45,135,188.72	45,567,645.58	101,400,000.00	03/28/2017	09/09/2020
01/14/2021	30313282	3	1	9,742.72	45,195,982.00	45,567,645.58	101,400,000.00	03/28/2017	09/09/2020
12/14/2020	30313282	3	1	9,442.29	45,256,516.73	45,567,645.58	101,400,000.00	03/28/2017	09/09/2020
11/16/2020	30313282	3	1	9,769.95	45,323,011.95	45,567,645.58	101,400,000.00	03/28/2017	09/09/2020
10/15/2020	30313282	3	1	6,943.59	45,383,006.43	45,567,645.58	101,400,000.00	03/28/2017	09/09/2020
07/14/2022	30313285	6	8	(16,165.78)	36,723,512.64	36,784,274.46	182,000,000.00	04/26/2021	12/10/2020	06/30/2022
06/14/2022	30313285	6	1	7,930.74	36,784,274.46	36,899,836.72	182,000,000.00	04/26/2021	12/10/2020
05/13/2022	30313285	6	1	7,687.47	36,839,567.38	36,899,836.72	182,000,000.00	04/26/2021	12/10/2020
04/14/2022	30313285	6	1	(107,897.61)	36,899,836.72	36,899,836.72	182,000,000.00	04/26/2021	12/10/2020
03/14/2022	30313285	6	1	7,199.28	36,954,622.97	37,961,804.09	300,800,000.00	02/01/2018	12/10/2020
02/14/2022	30313285	6	1	7,982.31	37,024,878.60	37,961,804.09	300,800,000.00	02/01/2018	12/10/2020
01/14/2022	30313285	6	1	7,993.93	37,079,116.61	37,961,804.09	300,800,000.00	02/01/2018	12/10/2020
12/14/2021	30313285	6	1	7,748.36	37,133,116.82	37,961,804.09	300,800,000.00	02/01/2018	12/10/2020
11/15/2021	30313285	6	1	8,018.16	37,192,140.45	37,961,804.09	300,800,000.00	02/01/2018	12/10/2020
10/15/2021	30313285	6	1	7,771.71	37,245,645.11	37,961,804.09	300,800,000.00	02/01/2018	12/10/2020
09/14/2021	30313285	6	1	8,042.18	37,304,191.22	37,961,804.09	300,800,000.00	02/01/2018	12/10/2020
08/13/2021	30313285	6	1	8,053.54	37,357,204.61	37,961,804.09	300,800,000.00	02/01/2018	12/10/2020
07/14/2021	30313285	6	1	7,805.80	37,409,985.57	37,961,804.09	300,800,000.00	02/01/2018	12/10/2020
06/14/2021	30313285	6	1	8,077.25	37,467,834.29	37,961,804.09	300,800,000.00	02/01/2018	12/10/2020
05/14/2021	30313285	6	13	7,828.65	37,520,130.20	37,961,804.09	300,800,000.00	02/01/2018	12/10/2020
04/14/2021	30313285	6	13	8,100.76	37,577,511.51	37,961,804.09	300,800,000.00	02/01/2018	12/10/2020
03/12/2021	30313285	6	13	7,329.95	37,629,326.55	37,961,804.09	300,800,000.00	02/01/2018	12/10/2020
Reports Available at sf.citidirect.com			v. 21.09.28		Page 37 of 46				© Copyright 2026 Citigroup


Citigroup Commercial Mortgage Trust 2017-C4
Commercial Mortgage Pass-Through Certificates, Series 2017-C4									October 15, 2026

HISTORICAL SPECIALLY SERVICED LOANS


				Special Servicing	Ending	Ending	Most	Most Recent	Most Recent	Most Recent
Distribution			Workout	Fee Amount	Scheduled	Actual	Recent	Valuation	Special Servicer Master Servicer
Date	Loan ID	OMCR	Strategy (3)	Plus Adjustments	Balance	Balance	Value	Date	Transfer Date	Return Date

02/12/2021	30313285	6	13	8,126.35	37,696,909.14	37,961,804.09	300,800,000.00	02/01/2018	12/10/2020
01/14/2021	30313285	6	1	5,774.89	37,748,200.69	37,961,804.09	300,800,000.00	02/01/2018	12/10/2020
12/14/2020	30313301	18	6	(7,347.57)	-	22,750,000.00	44,000,000.00	06/01/2017	09/10/2020
11/16/2020	30313301	18	6	4,897.57	22,750,000.00	22,750,000.00	44,000,000.00	06/01/2017	09/10/2020
10/15/2020	30313301	18	6	2,450.00	22,750,000.00	22,750,000.00	44,000,000.00	06/01/2017	09/10/2020
12/14/2022	30313308	25	8	(3,500.00)	-	-	21,300,000.00	07/19/2017	09/21/2021
11/15/2022	30313308	25	6	3,500.00	14,346,175.77	14,346,175.77	21,300,000.00	07/19/2017	09/21/2021
10/17/2022	30313308	25	6	(3,500.00)	14,368,299.60	14,368,299.60	21,300,000.00	07/19/2017	09/21/2021
09/14/2022	30313308	25	6	-	14,392,286.85	14,392,286.85	21,300,000.00	07/19/2017	09/21/2021
08/12/2022	30313308	25	13	-	14,414,216.34	14,414,216.34	21,300,000.00	07/19/2017	09/21/2021
07/14/2022	30313308	25	13	-	14,436,053.41	14,436,053.41	21,300,000.00	07/19/2017	09/21/2021
06/14/2022	30313308	25	13	(3,500.00)	14,459,764.29	14,459,764.29	21,300,000.00	07/19/2017	09/21/2021
05/13/2022	30313308	25	13	3,500.00	14,481,409.40	14,504,935.26	21,300,000.00	07/19/2017	09/21/2021
04/14/2022	30313308	25	13	3,500.00	14,504,935.26	14,526,389.99	21,300,000.00	07/19/2017	09/21/2021
03/14/2022	30313308	25	13	-	14,526,389.99	14,526,389.99	21,300,000.00	07/19/2017	09/21/2021
02/14/2022	30313308	25	13	(10,500.00)	14,553,690.13	14,553,690.13	21,300,000.00	07/19/2017	09/21/2021
01/14/2022	30313308	25	13	3,500.00	14,574,939.38	14,574,939.38	21,300,000.00	07/19/2017	09/21/2021
12/14/2021	30313308	25	13	3,500.00	14,596,099.08	14,619,157.11	21,300,000.00	07/19/2017	09/21/2021
11/15/2021	30313308	25	13	3,500.00	14,619,157.11	14,619,157.11	21,300,000.00	07/19/2017	09/21/2021
10/15/2021	30313308	25	13	3,500.00	14,640,130.45	14,640,130.45	21,300,000.00	07/19/2017	09/21/2021
08/14/2024	30313312	29	8	(20,322.58)	11,825,000.00	11,825,000.00	21,600,000.00	10/01/2017	12/07/2023	07/26/2024
07/12/2024	30313312	29	98	3,500.00	11,825,000.00	11,825,000.00	21,600,000.00	10/01/2017	12/07/2023
06/14/2024	30313312	29	98	3,500.00	11,825,000.00	11,825,000.00	21,600,000.00	10/01/2017	12/07/2023
05/14/2024	30313312	29	98	3,500.00	11,825,000.00	11,825,000.00	21,600,000.00	10/01/2017	12/07/2023
04/12/2024	30313312	29	98	3,500.00	11,825,000.00	11,825,000.00	21,600,000.00	10/01/2017	12/07/2023
03/14/2024	30313312	29	13	3,500.00	11,825,000.00	11,825,000.00	21,600,000.00	10/01/2017	12/07/2023
02/14/2024	30313312	29	13	3,500.00	11,825,000.00	11,825,000.00	21,600,000.00	10/01/2017	12/07/2023
01/12/2024	30313312	29	13	2,822.58	11,825,000.00	11,825,000.00	21,600,000.00	10/01/2017	12/07/2023
08/14/2026	30313316	33	8	(35,000.00)	-	-	13,000,000.00	11/07/2025	09/10/2025
07/14/2026	30313316	33	13	3,500.00	8,149,168.08	8,264,389.35	13,000,000.00	11/07/2025	09/10/2025
06/12/2026	30313316	33	13	3,500.00	8,166,185.39	8,264,389.35	13,000,000.00	11/07/2025	09/10/2025
05/14/2026	30313316	33	13	3,500.00	8,181,942.97	8,358,834.95	13,000,000.00	11/07/2025	09/10/2025
Reports Available at sf.citidirect.com			v. 21.09.28		Page 38 of 46				© Copyright 2026 Citigroup


Citigroup Commercial Mortgage Trust 2017-C4
Commercial Mortgage Pass-Through Certificates, Series 2017-C4									October 15, 2026

HISTORICAL SPECIALLY SERVICED LOANS


				Special Servicing	Ending	Ending	Most	Most Recent	Most Recent	Most Recent
Distribution			Workout	Fee Amount	Scheduled	Actual	Recent	Valuation	Special Servicer Master Servicer
Date	Loan ID	OMCR	Strategy (3)	Plus Adjustments	Balance	Balance	Value	Date	Transfer Date	Return Date

04/14/2026	30313316	33	13	3,500.00	8,198,817.79	8,358,834.95	13,000,000.00	11/07/2025	09/10/2025
03/13/2026	30313316	33	13	3,500.00	8,214,428.78	8,358,834.95	13,000,000.00	11/07/2025	09/10/2025
02/13/2026	30313316	33	13	3,500.00	8,233,548.81	8,358,834.95	13,000,000.00	11/07/2025	09/10/2025
01/14/2026	30313316	33	13	3,500.00	8,249,003.79	8,358,834.95	16,400,000.00	05/25/2017	09/10/2025
12/12/2025	30313316	33	13	3,500.00	8,264,389.35	8,358,834.95	16,400,000.00	05/25/2017	09/10/2025
11/17/2025	30313316	33	13	3,500.00	8,280,905.72	8,358,834.95	16,400,000.00	05/25/2017	09/10/2025
10/15/2025	30313316	33	13	3,500.00	8,296,147.98	8,358,834.95	16,400,000.00	05/25/2017	09/10/2025
02/14/2024	30313319	37	8	-	6,846,715.21	6,846,715.21	12,000,000.00	02/22/2023	05/27/2020	12/29/2023
01/12/2024	30313319	37	3	3,161.29	6,863,898.35	6,863,898.35	12,000,000.00	02/22/2023	05/27/2020
12/14/2023	30313319	37	3	3,500.00	6,881,007.46	6,881,007.46	12,000,000.00	02/22/2023	05/27/2020
11/14/2023	30313319	37	3	3,500.00	6,899,001.69	6,915,959.56	12,000,000.00	02/22/2023	05/27/2020
10/16/2023	30313319	37	3	3,500.00	6,915,959.56	6,933,808.04	12,000,000.00	02/22/2023	05/27/2020
09/14/2023	30313319	37	3	3,500.00	6,933,808.04	6,933,808.04	12,000,000.00	02/22/2023	05/27/2020
08/14/2023	30313319	37	3	3,500.00	6,950,615.95	6,950,615.95	12,000,000.00	02/22/2023	05/27/2020
07/14/2023	30313319	37	3	3,500.00	6,967,351.44	7,361,263.58	12,000,000.00	02/22/2023	05/27/2020
06/14/2023	30313319	37	3	3,500.00	6,984,985.61	7,361,263.58	12,000,000.00	02/22/2023	05/27/2020
05/12/2023	30313319	37	3	3,500.00	7,001,573.02	7,361,263.58	12,000,000.00	02/22/2023	05/27/2020
04/14/2023	30313319	37	3	3,500.00	7,019,064.49	7,602,141.74	12,000,000.00	02/22/2023	05/27/2020
03/14/2023	30313319	37	3	3,500.00	7,035,505.07	7,602,141.74	11,500,000.00	02/05/2021	05/27/2020
02/14/2023	30313319	37	3	3,500.00	7,054,816.30	7,602,141.74	11,500,000.00	02/05/2021	05/27/2020
01/13/2023	30313319	37	3	3,500.00	7,071,102.85	7,602,141.74	11,500,000.00	02/05/2021	05/27/2020
12/14/2022	30313319	37	3	3,500.00	7,087,319.23	7,602,141.74	11,500,000.00	02/05/2021	05/27/2020
11/15/2022	30313319	37	3	3,500.00	7,104,453.13	7,602,141.74	11,500,000.00	02/05/2021	05/27/2020
10/17/2022	30313319	37	3	3,500.00	7,120,525.82	7,602,141.74	11,500,000.00	02/05/2021	05/27/2020
09/14/2022	30313319	37	3	3,500.00	7,137,521.25	7,602,141.74	11,500,000.00	02/05/2021	05/27/2020
08/12/2022	30313319	37	3	3,500.00	7,153,451.47	7,602,141.74	11,500,000.00	02/05/2021	05/27/2020
07/14/2022	30313319	37	3	3,500.00	7,169,313.05	7,602,141.74	11,500,000.00	02/05/2021	05/27/2020
06/14/2022	30313319	37	3	3,500.00	7,186,105.04	7,602,141.74	11,500,000.00	02/05/2021	05/27/2020
05/13/2022	30313319	37	3	3,500.00	7,201,825.94	7,602,141.74	11,500,000.00	02/05/2021	05/27/2020
04/14/2022	30313319	37	3	3,500.00	7,218,482.35	7,602,141.74	11,500,000.00	02/05/2021	05/27/2020
03/14/2022	30313319	37	3	3,500.00	7,234,063.75	7,602,141.74	11,500,000.00	02/05/2021	05/27/2020
02/14/2022	30313319	37	3	3,500.00	7,252,601.96	7,602,141.74	11,500,000.00	02/05/2021	05/27/2020
Reports Available at sf.citidirect.com			v. 21.09.28		Page 39 of 46				© Copyright 2026 Citigroup


Citigroup Commercial Mortgage Trust 2017-C4
Commercial Mortgage Pass-Through Certificates, Series 2017-C4									October 15, 2026

HISTORICAL SPECIALLY SERVICED LOANS


				Special Servicing	Ending	Ending	Most	Most Recent	Most Recent	Most Recent
Distribution			Workout	Fee Amount	Scheduled	Actual	Recent	Valuation	Special Servicer Master Servicer
Date	Loan ID	OMCR	Strategy (3)	Plus Adjustments	Balance	Balance	Value	Date	Transfer Date	Return Date

01/14/2022	30313319	37	3	3,500.00	7,268,036.36	7,602,141.74	11,500,000.00	02/05/2021	05/27/2020
12/14/2021	30313319	37	3	3,500.00	7,283,404.26	7,602,141.74	11,500,000.00	02/05/2021	05/27/2020
11/15/2021	30313319	37	3	3,500.00	7,299,720.48	7,602,141.74	11,500,000.00	02/05/2021	05/27/2020
10/15/2021	30313319	37	3	3,500.00	7,314,951.87	7,602,141.74	11,500,000.00	02/05/2021	05/27/2020
09/14/2021	30313319	37	3	3,500.00	7,331,136.54	7,602,141.74	11,000,000.00	07/27/2020	05/27/2020
08/13/2021	30313319	37	3	3,500.00	7,346,232.58	7,602,141.74	11,000,000.00	07/27/2020	05/27/2020
07/14/2021	30313319	37	3	3,500.00	7,361,263.58	7,602,141.74	11,000,000.00	07/27/2020	05/27/2020
06/14/2021	30313319	37	3	3,500.00	7,377,255.12	7,602,141.74	11,000,000.00	07/27/2020	05/27/2020
05/14/2021	30313319	37	3	3,500.00	7,392,152.46	7,602,141.74	11,000,000.00	07/27/2020	05/27/2020
04/14/2021	30313319	37	3	3,500.00	7,408,015.20	7,602,141.74	11,000,000.00	07/27/2020	05/27/2020
03/12/2021	30313319	37	3	3,500.00	7,422,780.01	7,602,141.74	11,000,000.00	07/27/2020	05/27/2020
02/12/2021	30313319	37	3	3,500.00	7,440,583.53	7,602,141.74	11,000,000.00	07/27/2020	05/27/2020
01/14/2021	30313319	37	3	3,500.00	7,455,208.02	7,602,141.74	11,000,000.00	07/27/2020	05/27/2020
12/14/2020	30313319	37	3	3,500.00	7,469,769.50	7,602,141.74	11,000,000.00	07/27/2020	05/27/2020
11/16/2020	30313319	37	3	3,500.00	7,485,308.57	7,602,141.74	11,000,000.00	07/27/2020	05/27/2020
10/15/2020	30313319	37	3	3,500.00	7,499,740.37	7,602,141.74	11,000,000.00	07/27/2020	05/27/2020
09/14/2020	30313319	37	13	3,500.00	7,515,154.46	7,602,141.74	13,000,000.00	07/19/2017	05/27/2020
08/14/2020	30313319	37	13	3,500.00	7,529,457.67	7,602,141.74	13,000,000.00	07/19/2017	05/27/2020
07/14/2020	30313319	37	13	3,500.00	7,543,699.25	7,602,141.74	13,000,000.00	07/19/2017	05/27/2020
06/12/2020	30313319	37	98	564.52	7,558,930.03	7,602,141.74	13,000,000.00	07/19/2017	05/27/2020




Reports Available at sf.citidirect.com			v. 21.09.28		Page 40 of 46				© Copyright 2026 Citigroup


Citigroup Commercial Mortgage Trust 2017-C4
Commercial Mortgage Pass-Through Certificates, Series 2017-C4								October 15, 2026

HISTORICAL UNSCHEDULED PRINCIPAL DETAIL


Distribution			Liquidation /	Liquid / Prepay	Principal	Principal	Prepayment Interest	Prepayment	Yield Maintenance
Date	Loan ID	OMCR	Prepayment Date	Code (5)	Collections	Adjustments	Excess / (Shortfall)	Penalties (PPP)	Penalties (YM)

8/14/2026	30313313	30	08/06/2026	9	9,935,000.00	-	-	-	37,419.36
8/14/2026	30313316	33	07/17/2026	8	8,149,168.08	-	-	244,475.04	-
6/12/2026	30313295	14	06/06/2026	8	23,310,357.48	-	-	233,478.46	-
4/14/2025	30313326	44	04/06/2025	1	95,990.50	-	-	-	-
6/14/2024	30313332	50	06/06/2024	8	3,625,000.00	-	-	36,250.00	-
10/16/2023	30313282	3	10/06/2023	5	42,991,675.51	-	-	-	-
12/14/2022	30313308	25	11/16/2022	2	14,346,175.77	-	-	-	-
10/17/2022	30313302	19	10/06/2022	5	21,295,198.58	-	-	-	-
10/17/2022	30313314	31	10/06/2022	5	9,150,033.19	-	-	-	-
10/17/2022	30313334	52	10/06/2022	5	3,017,928.76	-	-	-	-
9/14/2022	30313309	26	09/06/2022	5	13,303,403.21	-	-	-	-
9/14/2022	30313329	47	08/12/2022	5	4,645,431.06	-	-	-	-
5/13/2022	30313320	38	05/06/2022	9	6,850,787.24	-	-	-	102,487.99
7/14/2021	30313282	3		0	(129,800.19)	-	-	-	-
12/14/2020	30313301	18	12/07/2020	8	22,750,000.00	-	-	-	500,454.78




Reports Available at sf.citidirect.com		v. 21.09.28			Page 42 of 46			© Copyright 2026 Citigroup


Citigroup Commercial Mortgage Trust 2017-C4
Commercial Mortgage Pass-Through Certificates, Series 2017-C4					October 15, 2026

CREFC® INVESTOR REPORTING PACKAGE LEGENDS

1\|CREFC Investor Reporting Package Legends
	Property Type (1)		Workout Strategy (3)		Liquidation/Prepayment Code (5)

MF	Multifamily	1	Modification	1	Partial Liquidation (Curtailment)
RT	Retail	2	Foreclosure	2	Payoff Prior To Maturity
HC	HealthCare	3	Bankruptcy	3	Disposition / Liquidation
IN	Industrial	4	Extension	4	Repurchase / Substitution
MH	Mobile Home Park	5	Note Sale	5	Full Payoff At Maturity
OF	Office	6	DPO	6	DPO
MU	Mixed Use	7	REO	7	Liquidation prior to 7/1/2006
LO	Lodging	8	Resolved	8	Payoff With Penalty
SS	Self Storage	9	Pending Return to Master Servicer	9	Payoff With Yield Maintenance
SE	Securities	10	Deed In Lieu of Foreclosure	10	Curtailment With Penalty
CH	Cooperative Housing	11	Full Payoff	11	Curtailment With Yield Maintenance
ZZ	Missing Information	12	Reps and Warranties
SF	SF	13	TBD
WH	Warehouse	98	Other
OT	Other

Modification Code (4)

	Payment Status of Loan (2)
		1	Maturity Date Extension
A	In Grace Period	2	Amortization Change
B	Late, but less than 30 Days	3	Principal Write-Off
0	Current	4	Blank (formerly Combination)
1	30-59 Days Delinquent	5	Temporary Rate Reduction
2	60-89 Days Delinquent	6	Capitalization of Interest
3	90-120 Days Delinquent	7	Capitalization of Taxes
4	Performing Matured Balloon	8	Other
5	Non Performing Matured Balloon	9	Combination
6	121+ Days Delinquent	10	Forbearance




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