FREE WRITING PROSPECTUS

FILED PURSUANT TO RULE 433

REGISTRATION FILE NO.: 333-257991-01

From: WELLS ABF SYNDICATE WELLS FARGO (WELLS FARGO SECURITIES LLC)
At: 11/12/21 13:34:40 UTC-05:00

BANK 2021-BNK37 - PUBLIC NEW ISSUE

**PRICING DETAILS** $1,123.582MM FIXED-RATE CMBS OFFERING

CO-LEAD MANAGERS & JOINT BOOKRUNNERS: WELLS FARGO SECURITIES, LLC BOFA SECURITIES, INC. MORGAN STANLEY & CO. LLC

CO-MANAGERS: ACADEMY SECURITIES, INC. DREXEL HAMILTON, LLC SIEBERT WILLIAMS SHANK & CO., LLC

OFFERED CERTIFICATES - PUBLIC

CLASS	FITCH/KBRA/MOODY'S	SIZE($MM)	C/E	WAL	CUM LTV	NOI DY	SPRD	CPN%	YLD%	$PX
A-1	AAAsf/AAA(sf)/Aaa(sf)	19.414	30.000%	2.66	32.5%	19.5%	IS+22	1.1860	1.1713	99.9998
A-2	AAAsf/AAA(sf)/Aaa(sf)	147.337	30.000%	4.90	32.5%	19.5%	IS+55	2.5130	1.8598	102.9956
A-3	AAAsf/AAA(sf)/Aaa(sf)	74.150	30.000%	6.74	32.5%	19.5%	IS+64	2.5880	2.1036	102.9974
A-SB	AAAsf/AAA(sf)/Aaa(sf)	24.589	30.000%	7.37	32.5%	19.5%	IS+54	2.4870	2.0423	102.9946
A-4	AAAsf/AAA(sf)/Aaa(sf)	234.500	30.000%	9.83	32.5%	19.5%	IS+65	2.3700	2.2572	100.9949
A-5	AAAsf/AAA(sf)/Aaa(sf)	380.018	30.000%	9.90	32.5%	19.5%	IS+67	2.6180	2.2795	102.9915
X-A	AAAsf/AAA(sf)/Aaa(sf)	880.008	N/A	N/A	N/A	N/A
X-B	A-sf/AAA(sf)/NR	243.574	N/A	N/A	N/A	N/A
A-S	AAAsf/AAA(sf)/Aa1(sf)	143.001	18.625%	9.96	37.8%	16.7%	IS+90	2.8510	2.5119	102.9922
B	AA-sf/AA(sf)/NR	47.143	14.875%	9.98	39.5%	16.0%	IS+103	2.9830	2.6425	102.9969
C	A-sf/A-(sf)/NR	53.430	10.625%	9.98	41.5%	15.2%	IS+170	3.1091	3.3125	98.5059

NON-OFFERED CERTIFICATES – PRIVATE (144A)

CLASS	FITCH/KBRA/MOODY'S	SIZE($MM)	C/E	WAL	CUM LTV	NOI DY
X-D	BBB-sf/BBB-(sf)/NR	55.000	N/A	N/A	N/A	N/A
D	BBBsf/BBB+(sf)/NR	31.428	8.125%	9.98	42.6%	14.8%
E	BBB-sf/BBB-(sf)/NR	23.572	6.250%	9.98	43.5%	14.5%

NON-OFFERED ELIGIBLE VERTICAL INTEREST

CLASS	FITCH/KBRA/MOODY'S	SIZE($MM)	C/E	WAL	CUM LTV	NOI DY
RRI	NR/NR/NR	~66.166	N/A	8.98	N/A	N/A

COLLATERAL SUMMARY
INITIAL POOL BALANCE:	$1,323,320,792
NUMBER OF LOANS:	80
NUMBER OF PROPERTIES:	137
WA CUT-OFF LTV:	46.4%
WA BALLOON LTV:	44.6%
WA U/W NCF DSCR:	3.93x
WA U/W NOI DEBT YIELD:	13.6%
WA MORTGAGE RATE:	3.1294%
TOP TEN LOANS %:	53.6%
WA REM TERM TO MATURITY (MOS):	110
WA REM AMORTIZATION TERM (MOS):	364
WA SEASONING (MOS):	1
LOAN SELLERS:	WFB(41.3%), BANA(26.4%), MSMCH(25.8%),
NCB(4.6%), BANA/WFB(1.9%)
TOP 3 PROPERTY TYPES:	OFFICE(36.3%), RETAIL(32.4%),
MULTIFAMILY(13.8%)
TOP 5 STATES:	NY(37.2%), TX(13.7%), CA(11.5%),
IL(9.5%), AZ(3.6%)
MASTER SERVICER:	WELLS FARGO BANK, NATIONAL ASSOCIATION AND
NATIONAL COOPERATIVE BANK, N.A.
SPECIAL SERVICER:	CWCAPITAL ASSET MANAGEMENT LLC AND
NATIONAL COOPERATIVE BANK, N.A.
DIRECTING CERTIFICATEHOLDER:	BIG BNK37, LLC
DOCUMENTS & TIMING
TERM SHEET, ANNEX A-1:	ATTACHED
PRELIM PROSPECTUS:	AVAILABLE
PRESALE REPORTS:	AVAILABLE
ANTICIPATED SETTLEMENT:	NOVEMBER 22, 2021

THIRD PARTY PASSWORDS:

Name PW

BBG/Trepp BANK 2021-BN37 2021BNK37

Intex BNK21B37 pgeli38dic2kflmu1eqv6z

CONFERENCE CALLS: UPON DEMAND

Wells Fargo Commercial Mortgage Securities, Inc., as depositor, has filed a registration statement (including a prospectus) with the Securities and Exchange Commission (‘‘SEC’’) (SEC File No. 333-257991) for the offering to which this communication relates. Before you invest, you should read the prospectus in the registration statement and other documents the depositor has filed with the SEC for more complete information about the depositor, the issuing entity and this offering. You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the depositor, any underwriter, or any dealer participating in the offering will arrange to send you the prospectus after filing if you request it by calling toll free 1-800-745-2063 (8 a.m. - 5 p.m. EST) or by emailing wfs.cmbs@wellsfargo.com.

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