EFSC (EFSC) Chief Legal Officer receives 1,471 RSUs in new grant

Rhea-AI Filing Summary

IANNACONE NICOLE M reported acquisition or exercise transactions in this Form 4 filing.

ENTERPRISE FINANCIAL SERVICES CORP senior executive Nicole M. Iannacone, SEVP and Chief Legal Officer, reported an award of 1,471 Restricted Share Units on March 4, 2026. The RSUs were granted at no cost under the company’s 2018 Stock Incentive Plan.

Each RSU represents the right to receive one share of common stock, and this grant vests 100% in the first quarter of 2029, subject to her continued employment. The Form 4 also updates her directly held balances of stock options, RSUs, and common stock, including 22,855 common shares held directly after the reported date.

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

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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^*

IANNACONE NICOLE M

(Last) (First) (Middle)

150 N. MERAMEC

(Street)

CLAYTON MO 63105

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ENTERPRISE FINANCIAL SERVICES CORP [ EFSC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SEVP, Chief Legal Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/04/2026

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								22,855	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
Non Qualified Stock Option (Right to Buy)	$43.81							02/06/2024	02/25/2031	Common Stock	4,521		4,521	D
Non Qualified Stock Option (Right to Buy)	$48.34							02/03/2025	02/24/2032	Common Stock	4,946		4,946	D
Non Qualified Stock Option (Right to Buy)	$54.46							02/10/2026	02/28/2033	Common Stock	4,985		4,985	D
Non Qualified Stock Option (Right to Buy)	$39.5							(1)	02/28/2034	Common Stock	7,551		7,551	D
Non Qualified Stock Option (Right to Buy)	$57.17							(2)	03/04/2035	Common Stock	3,976		3,976	D
Restricted Share Units	(3)							(4)	(4)	Common Stock	1,443		1,443	D
Restricted Share Units	(3)							(5)	(5)	Common Stock	1,330		1,330	D
Restricted Share Units	(3)							(6)	(6)	Common Stock	3,326		3,326	D
Restricted Share Units	(3)	03/04/2026		A		1,471		(7)	(7)	Common Stock	1,471	$0	1,471	D

Explanation of Responses:

1. This option becomes exercisable in the first quarter of 2027, subject to continued employment by the reporting person.

2. The option becomes exercisable in the first quarter of 2028, subject to continued employment by the reporting person.

3. The RSU's were granted pursuant to the Company's 2018 Stock Incentive Plan. Each RSU represents the right to receive one share of Common Stock, subject to adjustment as provided in the Grant Agreement.

4. The RSU's vest 100% in the first quarter of 2027, subject to continued employment by the reporting person.

5. The RSU's vest 100% in the first quarter of 2028, subject to continued employment by the reporting person.

6. The RSUs vest over six years in one-third installments on each of February 24, 2024, February 24, 2026, and February 24, 2028. Vesting is subject to continued employment of the reporting person. On each vesting date, for each RSU vesting on such date, the reporting person will receive one share of Common Stock.

7. The RSU's vest 100% in the first quarter of 2029, subject to continued employment by the reporting person.

	/s/ Nicole M. Iannacone	03/06/2026
	** Signature of Reporting Person	Date
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FAQ

What did EFSC executive Nicole Iannacone report on this Form 4?

Nicole Iannacone reported receiving an award of 1,471 Restricted Share Units in ENTERPRISE FINANCIAL SERVICES CORP stock. The filing also updates her directly held balances of stock options, RSUs, and 22,855 common shares as of March 4, 2026.

When do the newly granted RSUs to EFSC’s Chief Legal Officer vest?

The newly granted 1,471 RSUs to EFSC’s Chief Legal Officer vest 100% in the first quarter of 2029, subject to her continued employment. Vesting conditions mean she must remain employed through that future period to receive the underlying shares.

What does each Restricted Share Unit represent for EFSC’s Nicole Iannacone?

Each Restricted Share Unit granted to Nicole Iannacone represents the right to receive one share of ENTERPRISE FINANCIAL SERVICES CORP common stock. This conversion happens upon vesting, as provided in the grant agreement under the company’s 2018 Stock Incentive Plan.

How many EFSC common shares does Nicole Iannacone hold directly after this filing?

After the reported transactions, Nicole Iannacone directly holds 22,855 shares of ENTERPRISE FINANCIAL SERVICES CORP common stock. The Form 4 also lists her various non-qualified stock options and RSU holdings, all reported as directly owned positions.

Were there any insider stock sales reported by EFSC’s Chief Legal Officer?

No insider stock sales were reported for EFSC’s Chief Legal Officer in this Form 4. The filing shows a grant of 1,471 RSUs and updated holdings, but no buy or sell transactions in common stock during the reported period.