Isabella Bank director granted 826 shares

Tessin Brian B reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Tessin Brian B reported acquisition or exercise transactions in this Form 4 filing.

Isabella Bank Corp director Brian B. Tessin reported receiving a grant of 826 shares of common stock on March 2, 2026 at a price of $48.54 per share. After this grant, he directly owns a total of 1,055 common shares of the company.

Insider Trade Summary

Grant/Award: 826 shares

Grant/Award 1 txn

Insider Tessin Brian B

Role Director

Type	Security	Shares	Price	Value
Grant/Award	common	826	$48.54	$40K

Holdings After Transaction: common — 1,055 shares (Direct)

FAQ

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

What insider transaction did ISBA director Brian B. Tessin report?

Brian B. Tessin reported acquiring 826 Isabella Bank Corp common shares as a grant. The transaction used code A, meaning a grant, award, or other acquisition, rather than an open-market purchase or sale.

When did the Isabella Bank Corp (ISBA) insider share grant occur?

The insider share grant to Brian B. Tessin occurred on March 2, 2026. On that date, he was awarded 826 common shares of Isabella Bank Corp at a reported price of $48.54 per share.

What price was used for the ISBA insider share grant to Brian B. Tessin?

The grant to Brian B. Tessin used a reported price of $48.54 per Isabella Bank Corp common share. This price is disclosed in the Form 4 as the transaction price per share for the 826-share award.

How many Isabella Bank Corp shares does Brian B. Tessin own after the grant?

After the March 2, 2026 grant, Brian B. Tessin directly owns 1,055 Isabella Bank Corp common shares. This total reflects his holdings following the 826-share award reported in the Form 4 filing.

What does transaction code A mean in the ISBA Form 4 filing?

Transaction code A in the Form 4 indicates a grant, award, or other acquisition of securities. For Isabella Bank Corp, it shows that Brian B. Tessin received 826 common shares as an award, not through an open-market purchase.

Is Brian B. Tessin’s ownership in ISBA classified as direct or indirect?

Brian B. Tessin’s reported holdings in Isabella Bank Corp are classified as direct ownership. The Form 4 lists the ownership type and code as direct, meaning the 1,055 common shares are held directly in his name.

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

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Accepted by SEC EDGAR 03/04/2026 - 09:55 AM 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
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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^*

Tessin Brian B

(Last) (First) (Middle)

401 N MAIN ST.

(Street)

MT PLEASANT MI 48858

(City) (State) (Zip)

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)

3. Date of Earliest Transaction (Month/Day/Year)
03/02/2026

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

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

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

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	03/02/2026		A		826	A	$48.54	1,055	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	03/04/2026
	** 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.
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