Nicole M. Iannacone - 24 Feb 2026 Form 4 Insider Report for ENTERPRISE FINANCIAL SERVICES CORP (EFSC)

Role: SEVP, Chief Legal Officer
Signature: /s/ Nicole M. Iannacone
Issuer symbol: EFSC
Transactions as of: 24 Feb 2026
Net transactions value: -$84,398
Form type: 4
Filing time: 26 Feb 2026, 13:19:06 UTC
Previous filing: 12 Feb 2026
Next filing: 06 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
IANNACONE NICOLE M	SEVP, Chief Legal Officer	150 N. MERAMEC, CLAYTON	/s/ Nicole M. Iannacone	26 Feb 2026	0001731826

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	EFSC	Common Stock	Options Exercise	$0	+3,326	+16%	$0.000000	24,321	24 Feb 2026	Direct
transaction	EFSC	Common Stock	Tax liability	$84,398	-1,466	-6%	$57.57	22,855	24 Feb 2026	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	EFSC	Restricted Share Units	Options Exercise	$0	-3,326	-50%	$0.000000	3,326	24 Feb 2026	Common Stock	3,326		Direct	F4, F7
holding	EFSC	Non Qualified Stock Option (Right to Buy)						4,521	24 Feb 2026	Common Stock	4,521	$43.81	Direct
holding	EFSC	Non Qualified Stock Option (Right to Buy)						4,946	24 Feb 2026	Common Stock	4,946	$48.34	Direct
holding	EFSC	Non Qualified Stock Option (Right to Buy)						4,985	24 Feb 2026	Common Stock	4,985	$54.46	Direct
holding	EFSC	Non Qualified Stock Option (Right to Buy)						7,551	24 Feb 2026	Common Stock	7,551	$39.50	Direct	F2
holding	EFSC	Non Qualified Stock Option (Right to Buy)						3,976	24 Feb 2026	Common Stock	3,976	$57.17	Direct	F3
holding	EFSC	Restricted Share Units						1,443	24 Feb 2026	Common Stock	1,443		Direct	F4, F5
holding	EFSC	Restricted Share Units						1,330	24 Feb 2026	Common Stock	1,330		Direct	F4, F6

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Withholding of stock to satisfy tax withholding obligation on issuance of common stock.
F2	This option becomes exercisable in the first quarter of 2027, subject to continued employment by the reporting person.
F3	The option becomes exercisable in the first quarter of 2028, subject to continued employment by the reporting person.
F4	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.
F5	The RSU's vest 100% in the first quarter of 2027, subject to continued employment by the reporting person.
F6	The RSU's vest 100% in the first quarter of 2028, subject to continued employment by the reporting person.
F7	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.