FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person *   Herron Mark F 2. Date of Event Requiring Statement (Month/Day/Year) 05/03/2018 3. Issuer Name and Ticker or Trading Symbol People's United Financial, Inc. [PBCT] (Last) (First) (Middle) C/O PEOPLE'S UNITED BANK, N.A., 850 MAIN STREET 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) Executive Vice President 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) BRIDGEPORT, CT 06604 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Stock 288 (1) D   Common Stock 2,430 (2) D   Common Stock 1,585 (3) D   Common Stock 960 (4) D   Common Stock 15,000 (5) D   Common Stock 849 (6) D Â

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Employee Option to Buy	  (7)	05/19/2026	Common Stock	10,128	$ 15.29	D	Â
Employee Option to Buy	  (8)	02/16/2027	Common Stock	15,336	$ 19.165	D	Â
Employee Option to Buy	  (9)	02/15/2028	Common Stock	21,471	$ 19.707	D	Â
Employee Option to Buy	  (10)	05/19/2026	Common Stock	10,127	$ 15.29	D	Â
Employee Option to Buy	  (10)	02/16/2027	Common Stock	7,667	$ 19.165	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Herron Mark F C/O PEOPLE'S UNITED BANK, N.A. 850 MAIN STREET BRIDGEPORT, CT 06604	Â	Â	  Executive Vice President	Â

Signatures

/s/ Mark F. Herron		05/03/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(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).
(1)	Includes 288 shares owned indirectly through the People's United Financial, Inc. Employee Stock Ownership Plan. Information is based on 03/31/2018 Plan statements.
(2)	These are restricted shares that vest in equal annual increments on Mar. 1, 2019, Mar. 1, 2020 and Mar. 1, 2021.
(3)	These are restricted shares that vest in equal annual increments on Mar. 1, 2019 and Mar. 1, 2020.
(4)	These are restricted shares that vest on Mar. 1, 2019.
(5)	These are restricted shares that vest on Jan. 3, 2024.
(6)	Shares held at Solium or brokerage account.
(7)	Exercisable on Mar. 1 immediately following the 3rd anniversary (100%) of the grant date.
(8)	Exercisable in equal annual increments over two years beginning on Mar. 1 immediately following the 2nd anniversary of the grant date.
(9)	Exercisable in equal annual increments over three years beginning on Mar. 1 immediately following the 1st anniversary of the grant date.
(10)	These options have become exercisable in accordance with the terms of the applicable option grants.

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