Isabella Bank (ISBA) director adds to personal shareholding

Rhea-AI Filing Summary

ISABELLA BANK CORP director Jill Bourland made an open-market purchase of 6.135 common shares at $48.90 per share. After this transaction, she directly holds a total of 5,853.2993 common shares, indicating a small incremental increase in her personal investment.

Insider Trade Summary

Net Buyer: 6.135 shares ($300)

Net Buy 1 txn

Insider Bourland Jill

Role Director

Bought 6.135 shs ($300.00)

Type	Security	Shares	Price	Value
Purchase	common	6.135	$48.90	$300.00

Holdings After Transaction: common — 5,853.299 shares (Direct)

Footnotes (1)

Key Figures

Shares purchased: 6.135 shares Purchase price: $48.90 per share Shares owned after: 5,853.2993 shares

3 metrics

Shares purchased 6.135 shares Open-market purchase on 2026-04-16

Purchase price $48.90 per share Price paid for common shares

Shares owned after 5,853.2993 shares Direct common share ownership post-transaction

Key Terms

open-market purchase, common, direct ownership

3 terms

open-market purchase financial

"transaction_action": "open-market purchase""

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

common financial

""security_title": "common""

direct ownership financial

""ownership_type": "direct""

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 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)
04/16/2026

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	04/16/2026		P		6.135	A	$48.9	5,853.2993	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	04/17/2026
	** 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)

FAQ

What insider transaction did ISBA director Jill Bourland report?

Director Jill Bourland reported an open-market purchase of 6.135 common shares of ISABELLA BANK CORP at $48.90 per share. This filing reflects a small increase in her direct personal share ownership in the company.

How many ISABELLA BANK CORP (ISBA) shares does Jill Bourland now own?

Following the reported transaction, Jill Bourland directly owns 5,853.2993 common shares of ISABELLA BANK CORP. This total includes the newly purchased 6.135 shares acquired through the open-market transaction at a price of $48.90 per share.

Was the ISBA insider transaction a purchase or a sale?

The ISABELLA BANK CORP insider transaction was a purchase. Director Jill Bourland conducted an open-market buy of 6.135 common shares at $48.90 per share, increasing her direct ownership stake in the company modestly.

What price did Jill Bourland pay for the newly acquired ISBA shares?

Jill Bourland paid $48.90 per share for 6.135 common shares of ISABELLA BANK CORP. This open-market purchase price provides a concrete reference point for the value of the shares acquired in this Form 4 insider transaction.

Is Jill Bourland’s ISBA shareholding direct or indirect?

Jill Bourland’s reported ISABELLA BANK CORP holdings are classified as direct ownership. The Form 4 notes the ownership code as “D”, meaning she holds 5,853.2993 common shares in her own name rather than through an intermediary entity.