Isabella Bank Corporation plans to acquire Grand River Commerce, Inc. via a stock-and-cash merger. Grand River shareholders can elect cash or Isabella stock, subject to proration so that approximately 35% of Grand River shares are exchanged for cash and 65% for Isabella shares.
The deal provides aggregate cash consideration of $18,262,391 and 839,003 Isabella common shares, with estimated per-share cash of $5.71 and an estimated exchange ratio of 0.1413 based on 9,136,529 Grand River shares. At Isabella share prices of $43.24 and $40.24, the aggregate merger value is illustrated at about $54.6 million and $52.0 million, respectively.
The cash pool can be reduced if Grand River’s adjusted shareholders’ equity is below $45.7 million, and closing requires Grand River adjusted equity of at least $40.0 million, regulatory approvals, tax opinions, and shareholder approval. After closing, former Grand River holders are expected to own about 9.9% of Isabella. Grand River shareholders have dissenters’ rights under Michigan law.
Isabella Bank Corporation plans to acquire Grand River Commerce, Inc. via a stock-and-cash merger. A wholly owned Isabella subsidiary will merge into Grand River, then Grand River will merge into Isabella, followed by a bank merger of Grand River Bank into Isabella Bank.
Each Grand River common share (voting and non-voting, excluding specified and dissenting shares) will convert into either cash or Isabella stock, subject to proration so that 35% of shares are cashed out and 65% receive Isabella shares. The aggregate cash pool is $18,262,391; the stock pool is 839,003 Isabella shares, producing an estimated per-share cash amount of $5.71 and an estimated exchange ratio of 0.1413 based on 9,136,529 Grand River shares at closing.
At Isabella prices of $43.24 on June 11, 2026 and $40.24 on August 3, 2026, total merger value was about $54.6 million and $52.0 million, respectively. Post-merger, former Grand River holders are expected to own about 9.9% of Isabella. Completion requires approval of Grand River voting shareholders at a September 18, 2026 virtual special meeting, multiple regulatory approvals, effectiveness of the registration statement, a minimum Grand River adjusted equity of $40.0 million, and other customary conditions. Grand River shareholders have dissenters’ rights under Michigan law, and the deal is intended to qualify as a tax-free reorganization for U.S. federal income tax purposes for stock recipients.
BlackRock, Inc. reports beneficial ownership of Isabella Bank Corp common stock. BlackRock and certain of its business units beneficially own 467,431 shares of Isabella Bank Corp, representing 6.4% of the outstanding common stock.
BlackRock has sole voting power over 462,787 shares and sole dispositive power over 467,431 shares, with no shared voting or dispositive power. Various underlying clients have rights to dividends or sale proceeds, but no single client holds more than five percent of Isabella Bank’s outstanding common shares.
Isabella Bank Corporation is registering 839,003 shares of common stock on Form S-4 to acquire Grand River Commerce, Inc. in a cash-and-stock merger. A wholly owned Isabella subsidiary will merge into Grand River, then Grand River will merge into Isabella, followed by a bank-level merger.
Grand River shareholders can elect cash or Isabella stock, subject to proration so that 35% of Grand River shares are exchanged for cash and 65% for Isabella stock. The aggregate cash consideration is $18,262,391; the stock pool is 839,003 Isabella shares. Assuming 9,136,529 Grand River shares at closing, the estimated per-share cash consideration is $5.71 and the estimated stock exchange ratio is 0.1413 Isabella shares per Grand River share.
Based on Isabella’s $43.24 share price on June 11, 2026, the implied aggregate merger value was about $54.6 million, and former Grand River holders are expected to own about 9.9% of Isabella post-merger. Closing requires Grand River shareholder approval, multiple regulatory approvals, certain financial thresholds (including $40.0 million minimum adjusted equity and an allowance-for-credit-losses ratio of at least 112%), and tax opinions that the transaction qualifies as a reorganization.
Isabella Bank Corporation reported second quarter 2026 net income of $5.0 million, or $0.69 per diluted share, matching the prior-year quarter, while net income for the first six months rose to $10.0 million, or $1.37 per diluted share. Net interest income increased to $18.1 million, and net interest margin expanded to 3.54% from 3.14% a year earlier, reflecting higher loan yields and lower funding costs. Noninterest income grew to $4.4 million, led by higher service charges, wealth management fees, and earnings on bank-owned life insurance.
On the balance sheet, total assets were $2.2 billion and loans reached $1.6 billion, up $53.3 million since year-end, while deposits were $1.8 billion and the loan-to-deposit ratio rose to 87.83%. Asset quality remained solid but mixed, with nonaccrual loans increasing to $7.8 million and net charge-offs of $384,000, though past-due loans stayed very low. Shareholders’ equity rose to $248.7 million (book value $32.60 per share) aided by an at-the-market stock offering that added $11.7 million of equity. The company also signed a merger agreement with Grand River Commerce, Inc. and was added to the Russell 2000 Index.
Isabella Bank Corp director Jill Bourland purchased 7.6785 shares of common stock on July 16, 2026 at $39.0700 per share in a transaction classified as a purchase in an open market or private transaction. Following this trade, she directly owns 5,892.0810 shares of Isabella Bank Corp common stock. The Rule 10b5-1 trading plan checkbox on the Form 4 was not selected.
ISABELLA BANK CORP executive Erika M. Ross, the Chief Operations Officer, filed an initial ownership report showing beneficial ownership of 1,042.2049 shares of common stock held directly. This Form 3 reflects her starting equity position as an officer and does not report any specific buy or sell transactions.
ISABELLA BANK CORP director Jill Bourland reported an open-market purchase of common stock. She bought 7.2411 shares at a price of $41.4300 per share. After this transaction, her directly owned holdings increased to 5,876.8485 common shares, indicating a small incremental addition to her position.
Isabella Bank Corporation entered into an Equity Distribution Agreement with Piper Sandler & Co. allowing the company to issue and sell, from time to time, common stock with an aggregate gross sales price of up to $30,000,000 through an at-the-market offering program.
Under this arrangement, Isabella Bank will periodically set sale parameters such as share amount, timing, daily limits and minimum prices, while paying the agent a commission of up to 3.0% of the gross sales price. Shares will be issued off the company’s effective Form S-3 shelf registration and related prospectus supplement, and either party may suspend or terminate the offering. Net proceeds are intended for general corporate purposes, which may include contributing capital to Isabella Bank to support lending and growth.