ENTERPRISE FINANCIAL SERVICES CORP — Director's Dealing 2012

May 7, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ENTERPRISE FINANCIAL SERVICES CORP (EFSC)
CIK: 0001025835
Period of Report: 2012-05-03

Reporting Person: Barry John G (EVP)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-05-03	Common Stock	A	4725	$11.91	Acquired	23186	Direct
2012-05-03	Common Stock	F	1656	$11.91	Disposed	21530	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	4707	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Restricted Share Units	$		Common Stock (564)	564	Direct

Footnotes

F1: The shares of restricted stock were awarded pursuant to the Company's 2002 Stock Incentive Plan.

F2: Withholding of stock to satisfy tax withholding obligation on issuance of restricted stock.

F3: These shares are held jointly with spouse.

F4: The RSUs were granted pursuant to the Company's 2002 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 RSUs vest at a rate of 20% annually over five years, subject to continued employment of the reporting person. Vesting occurs on December 15 of each year, commencing in the calendar year of the grant. On each vesting date, for each RSU vesting on such date, the reporting person will receive one share of Common Stock.