Isabella Bank (ISBA) director Jill Bourland adds to stake via share buys

Rhea-AI Filing Summary

Isabella Bank Corp director Jill Bourland reported two small open-market-style share acquisitions of the company’s common stock. On January 16, 2026, she acquired 6 shares at $50.00 per share, bringing her holdings to 5,577.7979 shares afterward. On January 20, 2026, she acquired an additional 242.0331 shares at $49.58 per share, increasing her direct beneficial ownership to 5,819.831 shares.

According to the footnotes, the January 16 purchase was made through the optional cash investment component of Isabella Bank Corporation’s stockholder dividend reinvestment and employee stock purchase plan, and the January 20 shares were acquired using director fees under the company’s deferred compensation plan for directors.

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

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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^*

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)
01/16/2026

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	01/16/2026		P(1)		6	A	$50	5,577.7979	D
common	01/20/2026		P(2)		242.0331	A	$49.58	5,819.831	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. Purchase pursuant to the Participation by Optional Cash Investment component of the Isabella Bank Corporation Stockholder Dividend Reinvestment And Employee Stock Purchase Plan.

2. Shares acquired with director fees pursuant to the Isabella Bank Corporation And Related Companies Deferred Compensation Plan For Directors.

Remarks:

	/s/ Jennifer L. Gill, By Power of Attorney	01/21/2026
	** 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 transactions did ISBA director Jill Bourland report?

Jill Bourland reported buying Isabella Bank Corp common stock in two transactions: 6 shares on January 16, 2026, and 242.0331 shares on January 20, 2026.

At what prices did Jill Bourland acquire Isabella Bank Corp (ISBA) shares?

She acquired 6 shares at $50.00 per share on January 16, 2026, and 242.0331 shares at $49.58 per share on January 20, 2026.

How many Isabella Bank Corp shares does Jill Bourland own after these transactions?

Following the reported transactions, Jill Bourland directly beneficially owns 5,819.831 shares of Isabella Bank Corp common stock.

What plans were used for Jill Bourland’s ISBA share acquisitions?

The filing states that 6 shares were purchased through the optional cash investment component of Isabella Bank Corporation’s Stockholder Dividend Reinvestment and Employee Stock Purchase Plan, and 242.0331 shares were acquired with director fees under the Deferred Compensation Plan for Directors.

Is Jill Bourland a director or officer of Isabella Bank Corp (ISBA)?

Jill Bourland is reported as a director of Isabella Bank Corp and is not listed as an officer or 10% owner in this filing.

Are Jill Bourland’s ISBA shares held directly or indirectly?

The Form 4 indicates that the reported holdings after each transaction are directly owned, with the ownership form marked as D (direct) and no indirect ownership entity noted.