First Internet Bancorp's 8% Borrowing Is a Capital-Structure Signal, Not a Growth Story

First Internet Bancorp just closed a quiet $20.5 million private placement of subordinated notes — 8.0% fixed for the first five years, then floating at three-month SOFR plus 373.5 basis points until 2036. For a bank whose stock near $29 values the whole company at roughly $254 million, the amount is real but not the headline. The headline is the 8% price tag, and what a recovering bank's willingness to pay it says about where the comeback actually stands.

Eight percent is expensive money for a bank. Its net interest margin — the spread it earns lending out deposits — is only about 2.39% on a GAAP basis as of the second quarter of 2026. You do not fund 2.4%-earning assets with 8% debt unless those borrowed dollars are doing something specific. Which is the point: this capital is not being raised to fund new loans. It is largely there to refinance. Management said the proceeds are for general corporate purposes, including redeeming or retiring existing debt carrying even higher interest rates. The notes also qualify as Tier 2 regulatory capital — the cushion a bank holds to reassure regulators and support balance-sheet growth.

Now the part worth sitting with: why borrow at 8% instead of selling stock? Because the bank trades at roughly 0.70x tangible book value. Its tangible book value per share is $41.09, far above the ~$29 stock price. When a bank's shares trade below book, issuing new stock hands new investors a permanent discount on ownership that existing holders already paid full value for. Debt is different: it is a fixed claim serviced out of earnings, and it leaves the existing ownership stake untouched. Paying 8% is expensive in absolute terms, but it can still be the cheaper way to finance a comeback when the alternative is giving away equity at a 30% discount to book. That is the arithmetic of protecting per-share value, and it is the real signal in this announcement.

The 8% is not only discipline — it is also pricing. The lender charges a premium because the recovery is real but unfinished. In the third quarter of 2025 the bank absorbed a $41.6 million net loss, including a $37.8 million pre-tax hit from selling $836.9 million of single-tenant lease-financing loans and a $34.8 million credit provision. The stock fell to its 52-week low near $17 as investors priced in a battered balance sheet. Since then the numbers have turned. Excessive credit was marked down and moved off the books, deposit costs fell, and the margin began climbing: net interest margin widened to 2.39% by the second quarter of 2026, the cost of interest-bearing deposits dropped to 3.38%, and the bank rebuilt to a 12.22% total capital ratio. Management is guiding full-year 2026 earnings of $2.35 to $2.45 per share and an FTE net interest margin of 2.75% to 2.80% by the fourth quarter.

So measure the 8% against the payoff. $20.5 million at 8% is about $1.6 million of annual interest — on the order of 8% of the roughly $21 million the bank expects to earn this year. That is a meaningful but survivable cost, and it only makes sense if most of it replaces even more expensive funding and the margin recovery lifts the bank's return above that 8% hurdle. If the refinancing math holds, the raise is a small step forward; if the margin stalls, it becomes a modest layer of overhead on top of an already thin equity payout.

For an income investor, be clear-eyed about what this security is. The equity is not an income story: the dividend yields well under 1%, token in size despite 13 straight years of payment. The genuinely income-bearing claim in this structure is the subordinated note itself, its 8% coupon fixed only until 2031, when it converts to floating. But this was a private placement, so most ordinary investors cannot simply buy it. That makes the practical question the raise puts to a stockholder less about quarterly cash flow and more about whether the recovery now being financed is durable enough to carry a $29 stock toward its $41 of tangible book value.

What would break the reasoning? The subordinated debt sits ahead of common equity in the capital stack — note holders get paid before shareholders in a downturn, and the note is not FDIC-insured. The 8% coupon is a real obligation the bank must cover from earnings before its small dividend means much to an owner. The swing factor is the same one the raise is designed around: the margin and credit story management keeps guiding. If the margin reaches 2.75%–2.80% and charge-offs stay contained, borrowed 8% will look like the cheap way to fund a turnaround. If the cleanup was incomplete, it becomes another claim stacked ahead of your equity. Either way, the $20.5 million is a detail; what it pays for — cheaper refinancing, a fatter capital cushion, and no dilution below book — is the signal worth following.