Bank First director Todd A. Sprang buys 400 shares

The reported purchase included shares acquired as part of dividend reinvestment plans; no Rule 10b5-1 plan is reported.

Available on EDGAR 10/29/2026 - 09:52 AM EDT Accepted by SEC EDGAR 10/29/2026 - 09:51 AM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Bank First Corp director Todd A. Sprang purchased 400 shares of common stock on October 28, 2026, at $148.37 per share. His reported direct holdings after the transaction were 2,431 shares.

Insider Trade Summary

Net Buyer: 400 shares

Net Buy 1 txn

Insider Sprang Todd A.

Role Director

Bought 400 shs ($59K)

Type	Security	Shares	Price	Value
Purchase	Common Stock F1	400	$148.37	$59K

Holdings After Transaction: Common Stock — 2,431 shares (Direct)

Footnotes (1)

1. F1. Includes shares acquired as part of dividend reinvestment plans.

Key Figures

Shares purchased: 400 shares Purchase price: $148.37 per share Direct holdings after transaction: 2,431 shares

3 metrics

Shares purchased 400 shares October 28, 2026

Purchase price $148.37 per share October 28, 2026

Direct holdings after transaction 2,431 shares Following the October 28, 2026 transaction

Key Terms

dividend reinvestment plans

1 terms

dividend reinvestment plans financial

"shares acquired as part of dividend reinvestment plans"

FAQ

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How many BFC shares did director Todd A. Sprang buy?

Todd A. Sprang, a director of Bank First Corp, purchased 400 shares on October 28, 2026, at $148.37 per share. His reported direct holdings afterward were 2,431 shares. The purchase included shares acquired as part of dividend reinvestment plans, and no Rule 10b5-1 plan is reported.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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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^*

Sprang Todd A.

(Last) (First) (Middle)

402 NORTH 8TH STREET

(Street)

MANITOWOC WISCONSIN 54220

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/28/2026

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 Stock	10/28/2026		P		400	A	$148.37	2,431(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 acquired as part of dividend reinvestment plans.

	/s/ Kelly Dvorak, attorney-in-fact	10/29/2026
	** 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)