ISABELLA BANK director awarded 251 ISBA shares

Rupp Vicki L reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Rupp Vicki L reported acquisition or exercise transactions in this Form 4 filing.

ISABELLA BANK CORP director Vicki L. Rupp reported an equity award of 251 common shares on March 2, 2026, recorded at a price of $48.54 per share. After this grant, her directly held common stock position increased to 9,815.8088 shares, which includes shares accumulated through quarterly dividend reinvestment.

Insider Trade Summary

Grant/Award: 251 shares

Grant/Award 1 txn

Insider Rupp Vicki L

Role Director

Type	Security	Shares	Price	Value
Grant/Award	common	251	$48.54	$12K

Holdings After Transaction: common — 9,815.8088 shares (Direct)

Footnotes (1)

1. F1. Includes shares acquired through quarterly dividend reinvestment.

FAQ

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What insider transaction did ISABELLA BANK CORP (ISBA) report for Vicki L. Rupp?

ISABELLA BANK CORP director Vicki L. Rupp reported an acquisition of 251 common shares as an equity grant or award. This non-derivative transaction was recorded on March 2, 2026, and reflects additional stock-based compensation rather than an open-market purchase.

At what price were the ISBA shares granted to director Vicki L. Rupp?

The 251 ISBA common shares granted to director Vicki L. Rupp were recorded at $48.54 per share. This price is used for reporting the value of the equity award and does not necessarily represent an open-market trade execution price.

How many ISBA shares does Vicki L. Rupp hold after this Form 4 transaction?

Following the reported equity award, Vicki L. Rupp directly holds 9,815.8088 ISBA common shares. This total includes shares accumulated through quarterly dividend reinvestment, as disclosed in the footnote accompanying the Form 4 insider transaction.

Was the ISBA Form 4 transaction a purchase or an award for Vicki L. Rupp?

The ISBA Form 4 transaction for Vicki L. Rupp is classified as a grant, award, or other acquisition, not an open-market purchase. The transaction code “A” indicates an equity award acquisition of 251 common shares rather than a discretionary buy.

Is Vicki L. Rupp’s ISBA ownership on this Form 4 direct or indirect?

Vicki L. Rupp’s ISBA holdings reported on this Form 4 are direct ownership. The filing marks the 9,815.8088 common shares as directly owned, with no referenced trust, partnership, or other entity having separate voting or investment authority.

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Accepted by SEC EDGAR 03/04/2026 - 09:52 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^*

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)
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		251	A	$48.54	9,815.8088(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/ 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.
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.