FBIZ (FBIZ) director Daniel Olszewski receives 710-share stock grant

Rhea-AI Filing Summary

FIRST BUSINESS FINANCIAL SERVICES, INC. director Daniel P. Olszewski received a grant of 710 shares of Common Stock on May 16, 2026 at no cash cost, characterized as a grant or award acquisition. Following this award, he directly holds 27,405 shares. A footnote states that an additional 23,150 shares are held by the Kathryn J. Olszewski 2021 GST Trust.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Olszewski Daniel P.

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	710	$0.00	--

Holdings After Transaction: Common Stock — 27,405 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares granted: 710 shares Grant price: $0.0000 per share Direct holdings after grant: 27,405 shares +1 more

4 metrics

Shares granted 710 shares Grant, award, or other acquisition on May 16, 2026

Grant price $0.0000 per share Reported transaction price for 710-share award

Direct holdings after grant 27,405 shares Common Stock directly held following transaction

Trust-held shares 23,150 shares Held by Kathryn J. Olszewski 2021 GST Trust per footnote

Key Terms

Grant, award, or other acquisition, Common Stock, GST Trust

3 terms

Grant, award, or other acquisition financial

"transaction is described as a “Grant, award, or other acquisition”"

Common Stock financial

"security title for the reported transaction is Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

GST Trust financial

"23,150 shares are held by the Kathryn J. Olszewski 2021 GST Trust"

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^*

Olszewski Daniel P.

(Last) (First) (Middle)

401 CHARMANY DRIVE

(Street)

MADISON WISCONSIN 53719

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
FIRST BUSINESS FINANCIAL SERVICES, INC. [ FBIZ ]

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)
05/16/2026

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 Stock	05/16/2026		A		710	A	$0	27,405(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. 23,150 shares are held by the Kathryn J. Olszewski 2021 GST Trust.

	Peter J. Wilder (Pursuant to Power of Attorney)	05/19/2026
	** 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 Daniel P. Olszewski report for FBIZ?

Daniel P. Olszewski reported receiving a grant of 710 FBIZ Common Stock shares. The shares were awarded with a reported price of $0.0000 per share, reflecting a compensation-related stock grant rather than an open-market purchase.

How many FBIZ shares does Daniel P. Olszewski hold after this transaction?

After the 710-share grant, Daniel P. Olszewski directly holds 27,405 FBIZ Common Stock shares. This figure reflects his direct ownership position following the reported award acquisition on May 16, 2026.

Was the FBIZ Form 4 transaction a market buy or sell?

The FBIZ Form 4 reports a grant classified as a “Grant, award, or other acquisition,” not an open-market buy or sell. The 710 shares were acquired at a reported price of $0.0000 per share as part of compensation.

Are there additional FBIZ shares held through a trust related to Olszewski?

Yes. A footnote states that 23,150 FBIZ shares are held by the Kathryn J. Olszewski 2021 GST Trust. These shares are separate from Olszewski’s 27,405 directly held shares reported after the May 16, 2026 grant.

What does transaction code "A" mean in the FBIZ Form 4 filing?

Transaction code “A” in the FBIZ Form 4 indicates a grant, award, or other acquisition of securities. In this case, it reflects that 710 shares of Common Stock were awarded to Daniel P. Olszewski rather than purchased on the open market.