X0508 4 2026-03-11 0 0001437958 COASTAL FINANCIAL CORP CCB 0001299647 Sprink Eric M C/O 5415 EVERGREEN WAY EVERETT WA 98203 1 1 0 0 CEO 0 Common Stock 2026-03-11 4 A 0 4860 0 A 163238 D Common Stock 885 I By spouse Common Stock 400 I By Custodian for Child 1 Common Stock 400 I By Custodian for Child 2 Common Stock 400 I By Custodian for Child 3 Represents award of time-based restricted stock units (RSUs) pursuant to the Coastal Financial Corporation 2018 Omnibus Incentive Plan. The RSUs vest in approximately equal installments over four years. Each restricted stock unit represents the right to receive one share of common stock upon vesting. Includes 26,351 time-based restricted stock units (RSUs) pursuant to the Coastal Financial Corporation 2018 Omnibus Incentive Plan. 7,455 of the RSUs vest in four approximately equal annual remaining installments; 3,165 of the RSUs vest in three approximately equal annual remaining installments; 6,688 of the RSUs vest in approximately two equal annual remaining installments; 4,183 of the RSUs vest in approximately one equal annual remaining installment; 4,860 of the RSUs vest in approximately equal installments over four years. 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/ Melisa Nelson, as Attorney-in-fact 2026-03-13