Isabella Bank director awarded 10 shares at $38.55

ISABELLA BANK CORP director Jill Bourland received a small equity award, modestly increasing her direct ownership in ISBA shares.

Rhea-AI Filing Summary

ISABELLA BANK CORP (ISBA) reported that director Jill Bourland acquired 10 common shares on September 1, 2026 through a grant, award, or other acquisition at a reported price of $38.55 per share. Following this award, she directly holds 5,909.2943 common shares of ISBA. No Rule 10b5-1 trading plan is reported for this transaction.

Insider Trade Summary

Grant/Award: 10 shares

Grant/Award 1 txn

Insider Bourland Jill

Role Director

Type	Security	Shares	Price	Value
Grant/Award	common	10	$38.55	$385.50

Holdings After Transaction: common — 5,909.2943 shares (Direct)

Key Figures

Shares acquired: 10 shares Reported price per share: $38.55 per share Shares owned after transaction: 5,909.2943 shares

3 metrics

Shares acquired 10 shares Grant, award, or other acquisition on September 1, 2026

Reported price per share $38.55 per share Equity award of 10 ISBA common shares

Shares owned after transaction 5,909.2943 shares Director Jill Bourland’s direct holdings following the September 1, 2026 award

Key Terms

Grant, award, or other acquisition, Rule 10b5-1, direct ownership

3 terms

Grant, award, or other acquisition financial

"coded as a grant, award, or other acquisition of 10 common shares"

Rule 10b5-1 regulatory

"No Rule 10b5-1 trading plan is reported for this transaction"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

direct ownership financial

"she directly holds 5,909.2943 common shares of ISBA"

FAQ

What insider transaction did ISBA disclose for director Jill Bourland?

ISABELLA BANK CORP disclosed that director Jill Bourland acquired 10 common shares on September 1, 2026 via a grant, award, or other acquisition, at a reported price of $38.55 per share, increasing her direct holdings to 5,909.2943 shares.

How many ISBA shares does Jill Bourland own after the reported Form 4 transaction?

After the reported transaction, director Jill Bourland directly owns 5,909.2943 ISABELLA BANK CORP common shares, as stated in the Form 4 filing, reflecting the addition of the 10-share grant reported for September 1, 2026.

What was the price per share for Jill Bourland’s ISBA equity award?

The Form 4 reports that Jill Bourland’s 10-share grant of ISABELLA BANK CORP common stock on September 1, 2026 carried a reported price of $38.55 per share, with the price noted on a per-share basis in the filing data.

Was Jill Bourland’s ISBA transaction made under a Rule 10b5-1 plan?

No. The Form 4 indicates the Rule 10b5-1 checkbox is not marked, so no Rule 10b5-1 trading plan is reported in connection with Jill Bourland’s September 1, 2026 acquisition of ISABELLA BANK CORP shares.

Is Jill Bourland’s ISBA acquisition a market purchase or an award?

The transaction is coded as a grant, award, or other acquisition rather than a market purchase. The Form 4 describes it as an acquisition of 10 common shares on September 1, 2026, with direct ownership reported after the award.

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Available on EDGAR 09/03/2026 - 01:07 PM Accepted by SEC EDGAR 09/03/2026 - 01:06 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^*

Bourland Jill

(Last) (First) (Middle)

619 S. MISSION ST.

(Street)

MOUNT PLEASANT MICHIGAN 48858

(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		10	A	$38.55	5,909.2943	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)