Director at Bank First Corp (BFC) receives 407-share stock award

Rhea-AI Filing Summary

Bourbulas Mary Kay reported acquisition or exercise transactions in this Form 4 filing.

Bank First Corp director Mary Kay Bourbulas received a stock award of 407 shares of Common Stock on March 6, 2026, at $135.23 per share. This was a compensation-related grant, not an open-market purchase. Following the award, she directly holds 8,126 shares, including shares in dividend reinvestment plans.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Bourbulas Mary Kay

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	407	$135.23	$55K

Holdings After Transaction: Common Stock — 8,126 shares (Direct)

Footnotes (1)

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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^*

Bourbulas Mary Kay

(Last) (First) (Middle)

402 NORTH 8TH STREET

(Street)

MANITOWOC WI 54220

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Bank First Corp [ BFC ]

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)
03/06/2026

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 Stock	03/06/2026		A		407	A	$135.23	8,126(1)	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. Includes shares held in dividend reinvestment plans.

	/s/ Kelly Dvorak, attorney-in-fact	03/10/2026
	** 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 Bank First Corp (BFC) report for Mary Kay Bourbulas?

Bank First Corp reported a stock award to director Mary Kay Bourbulas. She received 407 shares of Common Stock as a grant, recorded on March 6, 2026, rather than buying them on the open market.

How many Bank First Corp (BFC) shares were granted to the director?

Mary Kay Bourbulas was granted 407 shares of Bank First Corp Common Stock. This award increased her direct holdings and reflects compensation rather than a discretionary share purchase in the public market.

At what price was the Bank First Corp (BFC) stock award recorded?

The 407-share stock award to Mary Kay Bourbulas was recorded at $135.23 per share. This price is used for reporting purposes in the Form 4 and does not represent an open-market trade.

How many Bank First Corp (BFC) shares does the director hold after this transaction?

After the stock award, Mary Kay Bourbulas directly holds 8,126 shares of Bank First Corp Common Stock. This total includes shares held through dividend reinvestment plans, as disclosed in the footnote.

Was the Bank First Corp (BFC) Form 4 transaction a market purchase or a grant?

The Form 4 reports a grant or award acquisition, not a market purchase. The transaction code “A” and description confirm it was a compensation-related stock award of 407 shares to director Mary Kay Bourbulas.

Does the Bank First Corp (BFC) filing mention dividend reinvestment plan shares?

Yes. The footnote explains that Mary Kay Bourbulas’s reported holdings include shares held in dividend reinvestment plans. These plan shares are part of her 8,126 total directly owned shares after the award.