Isabella Bank director awarded 33 ISBA shares

ISABELLA BANK CORP (ISBA) reported that director Vicki L. Rupp received a grant or award of 33 shares of common stock on September 1, 2026, at a reported value of $38.55 per share.

Rhea-AI Filing Summary

ISABELLA BANK CORP (ISBA) reported that director Vicki L. Rupp received a grant or award of 33 shares of common stock on September 1, 2026, at a reported value of $38.55 per share. Following this acquisition, she holds 9,896.4592 shares of ISBA common stock directly.

Insider Trade Summary

Grant/Award: 33 shares

Grant/Award 1 txn

Insider Rupp Vicki L

Role Director

Type	Security	Shares	Price	Value
Grant/Award	common	33	$38.55	$1K

Holdings After Transaction: common — 9,896.4592 shares (Direct)

Key Figures

Shares acquired: 33 shares Reported value per share: $38.55 per share Total shares held after transaction: 9,896.4592 shares +2 more

5 metrics

Shares acquired 33 shares Grant or award of common stock on September 1, 2026

Reported value per share $38.55 per share Value assigned to the 33-share common stock award

Total shares held after transaction 9,896.4592 shares Director Vicki L. Rupp’s direct ISBA common stock holdings post-award

Transaction type Grant, award, or other acquisition Form 4 transaction code A for non-derivative common stock

Rule 10b5-1 plan status No Rule 10b5-1 plan reported Document-level 10b5-1 checkbox is not selected

Key Terms

Grant, award, or other acquisition, Form 4, Rule 10b5-1 trading plan, common stock

4 terms

Grant, award, or other acquisition financial

"classified as a grant, award, or other acquisition rather than a purchase"

Form 4 regulatory

"according to the Form 4 disclosure"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Rule 10b5-1 trading plan regulatory

"no Rule 10b5-1 trading plan; the document-level checkbox is not marked"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

common stock financial

"shares of ISABELLA BANK CORP common stock in this reported transaction"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

FAQ

What insider transaction did ISBA report for director Vicki L. Rupp?

ISABELLA BANK CORP reported that director Vicki L. Rupp received a grant or award of 33 shares of common stock on September 1, 2026, classified as a grant, award, or other acquisition rather than an open-market purchase.

How many ISBA shares did Vicki L. Rupp acquire in this Form 4 filing?

Vicki L. Rupp acquired 33 shares of ISABELLA BANK CORP common stock in this reported transaction, increasing her direct ownership position.

What was the reported per-share value of the ISBA stock award to Vicki L. Rupp?

The 33-share stock award to Vicki L. Rupp was reported at a value of $38.55 per share, as shown in the Form 4 transaction details.

What are Vicki L. Rupp’s total ISBA holdings after this transaction?

After the September 1, 2026 acquisition, Vicki L. Rupp directly holds 9,896.4592 shares of ISABELLA BANK CORP common stock, according to the Form 4 disclosure.

Was the ISBA insider transaction under a Rule 10b5-1 trading plan?

The filing indicates no Rule 10b5-1 trading plan; the document-level checkbox for such a plan is not marked, and there is no footnote stating that the transaction was made under a pre-arranged trading plan.

Is the ISBA insider transaction a market buy or a compensation award?

The ISBA transaction is categorized as a grant, award, or other acquisition (code A), which indicates a compensation-related award rather than an open-market purchase or sale.

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Available on EDGAR 09/03/2026 - 01:03 PM Accepted by SEC EDGAR 09/03/2026 - 01:03 PM 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^*

Rupp Vicki L

(Last) (First) (Middle)

4399 HACKETT ROAD

(Street)

SAGINAW MICHIGAN 48603

(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)
09/01/2026

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	09/01/2026		A		33	A	$38.55	9,896.4592	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	09/03/2026
	** 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)