X0609 4 2026-08-06 0 0001437958 COASTAL FINANCIAL CORP CCB 0001299647 Sprink Eric M false C/O 5415 EVERGREEN WAY EVERETT WA 98203 1 1 0 0 CEO 0 Common Stock 2026-08-06 4 P 0 10000 44.45 A 173238 D Common Stock 885 I By spouse Common Stock 400 I By Custodian for Child 3 Common Stock 400 I By Custodian for Child 2 Common Stock 400 I By Custodian for Child 1 Includes 26,351 time-based restricted stock units (RSUs) pursuant to the Coastal Financial Corporation 2018 Omnibus Incentive Plan. 12,315 of the RSUs vest in four approximately equal remaining installments; 3,165 of the RSUs vest in three approximately equal remaining installments; 6,688 of the RSUs vest in approximately two remaining equal installments; 4,183 of the RSUs vest in approximately one remaining equal installment. Also includes 100,000 shares of performance-based restricted stock units that vest on October 4, 2027, the quantity of which is dependent upon achievement of specified performance goals. Each restricted stock unit represents the right to receive one share of common stock upon vesting. /s/ Leilani McKernan, as Attorney-in-fact 2026-08-07