ECB Bancorp, Inc. /MD/ (ECBK) stock intrinsic value fair value estimate & owner earnings analysis

ECB Bancorp is the holding company for Everett Bank, a roughly 130-year-old community bank in Massachusetts with about $1.67 billion of assets, $1.19 billion of deposits and $180 million of shareholders' equity (about $20.6 per share) at June 30, 2026. It lends mainly on multifamily and commercial real estate and one- to four-family homes in Middlesex, Essex, Suffolk and Norfolk Counties, and funds itself with deposits and about $285 million of Federal Home Loan Bank advances. Because borrowing is the raw material of a bank, we value its earnings after interest and do not subtract debt separately. Earnings history. Our measure of owner earnings (operating cash flow, less working-capital swings, less stock and ESOP compensation, less maintenance capital spending) was $0.63 per share in 2022, $0.55 in 2023, $0.47 in 2024 and $1.02 in 2025. 2022 was distorted by the IPO (a $2.6 million share donation to a charitable foundation and a pension-related charge). 2023 and 2024 were squeezed as deposit costs jumped faster than loan yields; net interest margin was only 1.86% in 2024. In 2025 the margin widened to 2.12% and net interest income rose 27.7% to $31.9 million, as the average loan book grew about $158 million to $1.26 billion and loan yields rose faster than funding costs. Net income was $7.8 million in 2025 versus $4.0 million in 2024. In the first half of 2026 net income was $6.4 million ($0.77 per diluted share), with net interest income up about 39% from the first half of 2025, so the improvement has held for the last four quarters. Credit quality is very strong: non-performing loans were 0.08% of loans at year-end 2025. Anchor and growth. We set the earnings level for the business as it exists now, after the margin reset, rather than averaging in the 2023-2024 squeeze. Trailing actual owner-earnings growth in 2025 was +115% per share; our base case assumes year-one growth of zero from a level of $1.25 per share, and assumes no growth after that. That level is below the roughly $1.5 per share annualized first-half 2026 earnings and above the $1.02 reported for 2025, allowing for provisions for credit losses to return toward the higher 2025 level. We credit no further growth in the base case: loan growth, branch openings (Woburn opened; a Medford branch application was filed in January 2026), and continued margin expansion all depend on things that have not yet happened or on interest rates. Bear case: $11.0 per share. The bank is liability-sensitive; its own model shows net interest income falling 8.8% in a 200 basis point rate rise. Applying that to 2025 earnings, and doubling the credit-loss provision toward the $2.9 million level seen in 2022, reduces owner earnings to about $0.66 per share with no recovery. With no debt to subtract, that is worth about $11.0 per share. Base case: $20.8 per share. Owner earnings of $1.25 per share, held flat, capitalized at 6%. This is almost exactly the bank's book value per share, consistent with a bank earning a return on equity of roughly 7%. Bull case: $29.6 per share. If the bank's demonstrated 2026 earnings run rate (about $1.55 per share) holds and grows 2% a year for ten years as retained earnings support loan growth, the shares are worth about $29.6. What would make this wrong: a further rise in funding costs (the bank is funded largely by certificates of deposit and $285 million of FHLB advances costing about 3.9%), a real-estate credit problem in its concentrated Greater Boston loan book (largest single loans are $17.8 million and $20.0 million), or earnings in the last four quarters proving temporary. We could not reconcile the first-half 2026 operating cash flow ($14.8 million against $6.4 million of net income) from the annual filing alone and did not use it in the valuation. Excess capital (equity is about 10.8% of assets) and steady share buybacks are supportive but are not credited in the values above.