X0508 4 2025-02-10 0001914605 ECB Bancorp, Inc. /MD/ ECBK 0001529239 CITRANO John A 419 BROADWAY EVERETT MA 02149 1 EVP and COO 0 Common Stock 2025-02-10 4 P 0 1 14.09 A 55651 I By IRA Common Stock 2025-02-10 4 P 0 316 14.10 A 55967 I By IRA Common Stock 2025-02-10 4 P 0 50 14.11 A 56017 I By IRA Common Stock 2025-02-10 4 P 0 295 14.14 A 56312 I By IRA Common Stock 2025-02-10 4 P 0 5 14.15 A 56317 I By IRA Common Stock 2025-02-10 4 P 0 6 14.17 A 56323 I By IRA Common Stock 2025-02-10 4 P 0 100 14.18 A 56423 I By IRA Common Stock 2025-02-10 4 P 0 558 14.19 A 56981 I By IRA Common Stock 2025-02-10 4 P 0 306 14.20 A 57287 I By IRA Common Stock 2025-02-11 4 P 0 50 14 A 57337 I By IRA Common Stock 2025-02-11 4 P 0 246 14.01 A 57583 I By IRA Common Stock 2025-02-11 4 P 0 50 14.05 A 57633 I By IRA Common Stock 2025-02-11 4 P 0 100 14.07 A 57733 I By IRA Common Stock 2025-02-11 4 P 0 300 14.10 A 58033 I By IRA Common Stock 2025-02-11 4 P 0 250 14.11 A 58283 I By IRA Common Stock 2025-02-11 4 P 0 100 14.12 A 58383 I By IRA Common Stock 2025-02-11 4 P 0 150 14.16 A 58533 I By IRA Common Stock 2025-02-11 4 P 0 246 14.17 A 58779 I By IRA Common Stock 2025-02-11 4 P 0 50 14.18 A 58829 I By IRA Common Stock 2025-02-11 4 P 0 81 14.19 A 58910 I By IRA Common Stock 2025-02-11 4 P 0 415 14.20 A 59325 I By IRA Common Stock 4946 I By Spouse's IRA Common Stock 59384 D Common Stock 3186 I By ESOP Stock Options 10.1200 2024-10-31 2033-10-31 Common Stock 93610 93610 D Includes shares of restricted stock which vest at a rate of 20% per year commencing on October 31, 2024. Stock options vest at a rate of 20% per year commencing on October 31, 2024. Reflects transactions not required to be reported pursuant to Section 16 of the Securities Exchange Act of 1934, as amended. /s/ Steven T. Lanter, pursuant to power of attorney 2025-02-12