FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN 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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1. Name and Address of Reporting Person * Heyneman Charles M   2. Issuer Name and Ticker or Trading Symbol FIRST INTERSTATE BANCSYSTEM INC [FIBK] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 3238 DURLAND DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 05/23/2016 (Street) BILLINGS, MT 59102 4. If Amendment, Date 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 (City) (State) (Zip) 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 Class A Common Stock               4,949 D   Class A Common Stock               1,044 I By Trust Class A Common Stock               3,492 I By 401(k) Plan

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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 Underlying Securities (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 of Derivative Security: 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

Class B Common Stock (1)

$ 0

05/23/2016

G(2)

1,006

03/05/2010(1)

12/31/2029(1)

Class A Common Stock

1,006

$ 0

136,232

I

By Trust

Class B Common Stock (1)

$ 0

05/23/2016

G(2)

424

03/05/2010(1)

12/31/2029(1)

Class A Common Stock

424

$ 0

6,412

I

By Trust (3)

Class B Common Stock (1)

$ 0

05/23/2016

G(2)

582

03/05/2010(1)

12/31/2029(1)

Class A Common Stock

582

$ 0

6,570

I

By Trust (4)

Class B Common Stock (1)

$ 0

03/05/2010(1)

12/31/2029(1)

Class A Common Stock

9,000

9,000

I

By Spouse

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Heyneman Charles M 3238 DURLAND DRIVE BILLINGS, MT 59102	X

Signatures

/s/ KIRK D. JENSEN, Attorney-in-Fact for Reporting Person		05/24/2016
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	The Class B Common Stock is convertible at any time into Class A Common Stock on a share for share basis at the descretion of the holder. The conversion feature of the Class B common stock does not expire.
(2)	Change in form of indirect beneficial ownership from indirect ownership by self as trustee to indirect ownership by self as co-trustee for child's trust.
(3)	Shares are owned by a trust for one of Mr. Heyneman's children, for which Mr. Heyneman is a co-trustee and is deemed to be the beneficial owner for purposes of Section 16.
(4)	Shares are owned by a trust for one of Mr. Heyneman's children, for which Mr. Heyneman is a co-trustee and is deemed to be the beneficial owner for purposes of Section 16.

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