[Form 4] ISABELLA BANK CORP Insider Trading Activity

Rhea-AI Filing Summary

ISABELLA BANK CORP director Jill Bourland received a small stock award. On the reported date, she acquired 8.0000 shares of common stock as a grant or award at $48.5400 per share. After this award, her direct holdings totaled 5,833.6795 common shares.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Bourland Jill

Role Director

Type	Security	Shares	Price	Value
Grant/Award	common	8	$48.54	$388.32

Holdings After Transaction: common — 5,833.68 shares (Direct)

Footnotes (1)

Form 4 Insider Transactions: What Each Field Means →

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 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		8	A	$48.54	5,833.6795	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.
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 insider transaction did ISBA director Jill Bourland report on this Form 4?

Director Jill Bourland reported acquiring 8.0000 ISABELLA BANK CORP common shares as a grant or award. The transaction was coded as an acquisition, reflecting compensation in stock rather than an open-market purchase or sale.

Was Jill Bourland buying or selling ISBA shares in this Form 4 filing?

She was not buying or selling on the open market; she received shares. The filing shows an acquisition coded as a grant or award of 8.0000 common shares, increasing her directly held position in ISABELLA BANK CORP.

How many ISABELLA BANK CORP shares does Jill Bourland own after this reported transaction?

After the reported award, Jill Bourland directly holds 5,833.6795 ISABELLA BANK CORP common shares. This figure reflects her total direct ownership following the 8.0000-share grant disclosed in the Form 4 filing.

What price per share is associated with Jill Bourland’s ISBA stock award?

The stock award is associated with a value of $48.5400 per share. This figure typically reflects the grant or fair value used for reporting purposes, rather than a price from an open-market transaction.

What does transaction code A mean in Jill Bourland’s ISBA Form 4 filing?

Transaction code A indicates a grant, award, or other acquisition of securities. In this case, it shows that Jill Bourland received 8.0000 ISABELLA BANK CORP common shares as part of her compensation or a similar award.

Is Jill Bourland’s ownership in ISABELLA BANK CORP direct or indirect after this transaction?

Her reported ownership is direct following the transaction. The Form 4 lists ownership type and code as direct, meaning the 5,833.6795 common shares are held in her own name rather than through another entity.