v3.22.4
Cover
Jan. 27, 2023
Cover [Abstract]  
Document Type 8-K
Document Period End Date Jan. 27, 2023
Entity Registrant Name COASTAL FINANCIAL CORPORATION
Entity Incorporation, State or Country Code WA
Entity File Number 001-38589
Entity Tax Identification Number 56-2392007
Entity Address, Address Line One 5415 Evergreen Way
Entity Address, City or Town Everett
Entity Address, State or Province WA
Entity Address, Postal Zip Code 98203
City Area Code (425)
Local Phone Number 257-9000
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common stock, no par value per share
Trading Symbol CCB
Security Exchange Name NASDAQ
Entity Emerging Growth Company true
Entity Ex Transition Period true
Entity Central Index Key 0001437958
Amendment Flag false