[Form 4] Isabella Bank Corporation Common stock Insider Trading Activity

Rhea-AI Filing Summary

Vicki L. Rupp, a director of Isabella Bank Corp (ISBA), reported a purchase of common stock on 09/02/2025. The Form 4 shows acquisition of 35 shares at a price of $33.13, with total beneficial ownership following the transaction of 9,520.2701 shares. The filing notes the shares include those acquired through a quarterly dividend reinvestment plan. The Form 4 was submitted on behalf of the reporting person by power of attorney and signed on 09/04/2025. All details are limited to this single non-derivative transaction; no options, disposals, or other holdings changes are disclosed.

Positive

• Director increased stake through a disclosed purchase, showing ongoing insider participation
• Transaction disclosed with Power of Attorney signature and dividend reinvestment explanation

Negative

• None.

Insights

Financial Analyst

TL;DR: Small insider purchase via dividend reinvestment; immaterial to valuation but shows ongoing insider participation.

The 35-share acquisition at $33.13 is a routine non-derivative transaction executed through a dividend reinvestment plan and increases the director's reported beneficial ownership to 9,520.2701 shares. The size of the trade is de minimis relative to typical market-capitalization impacts and does not alter capital structure or signal a material change in insider positioning. Reporting appears complete for this transaction with Power of Attorney acknowledgment.

Corporate Governance Expert

TL;DR: Proper Section 16 reporting for a director; documentation and POA signature are in order.

The Form 4 discloses a standard director purchase and cites dividend reinvestment as the source. The form designates the filer as a director and is filed by one reporting person. The inclusion of a Power of Attorney signature dated 09/04/2025 indicates appropriate execution. There are no disclosed sales, option exercises, or other governance concerns in this filing.

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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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^*

Rupp Vicki L

(Last) (First) (Middle)

4399 HACKETT ROAD

(Street)

SAGINAW MI 48603

(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)
09/02/2025

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	09/02/2025		A		35	A	$33.13	9,520.2701(1)	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:

1. Includes shares acquired through quarterly dividend reinvestment.

Remarks:

	/s/ Jerome E. Schwind, By Power of Attorney	09/04/2025
	** 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.

FAQ

What transaction did ISBA director Vicki L. Rupp report on Form 4?

The Form 4 reports a purchase of 35 shares of Isabella Bank Corp common stock on 09/02/2025 at $33.13 per share.

How many ISBA shares does Vicki L. Rupp beneficially own after the transaction?

Following the reported transaction, Vicki L. Rupp beneficially owns 9,520.2701 shares.

Was the acquisition by Vicki L. Rupp part of a dividend reinvestment plan?

Yes. The filing explicitly states the reported shares include shares acquired through quarterly dividend reinvestment.

When was the Form 4 signed and by whom?

The filing was signed by Jerome E. Schwind by Power of Attorney on 09/04/2025.

Does the Form 4 report any derivative transactions for ISBA by the reporting person?

No. Table II for derivative securities contains no entries; only a non-derivative common stock acquisition is reported.