ISABELLA BANK director buys ISBA shares on market

ISABELLA BANK CORP director Jill Bourland reported an open-market purchase of common stock.

Rhea-AI Filing Summary

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.

Insider Trade Summary

Net Buyer: 7.2411 shares

Net Buy 1 txn

Insider Bourland Jill

Role Director

Bought 7.2411 shs ($300.00)

Type	Security	Shares	Price	Value
Purchase	common	7.2411	$41.43	$300.00

Holdings After Transaction: common — 5,876.8485 shares (Direct)

Key Figures

Shares Purchased: 7.2411 shares Purchase Price: $41.4300 per share Shares After Transaction: 5,876.8485 shares +1 more

4 metrics

Shares Purchased 7.2411 shares Open-market purchase of common stock

Purchase Price $41.4300 per share Price paid for ISBA common shares

Shares After Transaction 5,876.8485 shares Direct holdings following the trade

Net Buy Shares 7.2411 shares Net buy direction in transaction summary

Key Terms

open-market purchase, non-derivative, direct ownership, Purchase in open market or private transaction

4 terms

open-market purchase financial

"transaction_action: "open-market purchase""

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

non-derivative financial

"transaction_type: "non-derivative""

direct ownership financial

"ownership_type: "direct" and ownership_code: "D""

Purchase in open market or private transaction financial

"transaction_code_description: "Purchase in open market or private transaction""

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did ISBA director Jill Bourland do in this Form 4 filing?

Jill Bourland reported an open-market purchase of common stock. She bought 7.2411 ISABELLA BANK CORP shares at $41.4300 each, increasing her directly owned position to 5,876.8485 shares following the transaction.

How many ISBA shares did Jill Bourland buy and at what price?

She purchased 7.2411 common shares of ISABELLA BANK CORP. The reported purchase price was $41.4300 per share in an open-market or private transaction classified under transaction code P.

What are Jill Bourland’s total ISBA holdings after this transaction?

After the reported trade, Jill Bourland directly owns 5,876.8485 common shares of ISABELLA BANK CORP. This figure reflects her position immediately following the 7.2411-share open-market purchase disclosed in the Form 4.

Is the Jill Bourland ISBA transaction a buy or a sell?

The transaction is a buy. It is coded P for a purchase and described as an open-market or private transaction, with 7.2411 common shares acquired at a price of $41.4300 per share.

Does this ISBA Form 4 include any derivative transactions or options?

No, the reported activity involves only common stock. The transaction is classified as non-derivative, and the derivative position summary is empty, indicating no options, warrants, or other derivative securities in this filing.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/17/2026 - 12:17 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Bourland Jill

(Last) (First) (Middle)

619 S. MISSION ST.

(Street)

MOUNT PLEASANT MICHIGAN 48858

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
ISABELLA BANK CORP [ ISBA ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/16/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
common	06/16/2026		P		7.2411	A	$41.43	5,876.8485	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

	/s/ Jennifer L. Gill, By Power of Attorney	06/17/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)