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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(Print or Type Responses)

1. Name and Address of Reporting Person * Hanson R Brian   2. Issuer Name and Ticker or Trading Symbol ION GEOPHYSICAL CORP [IO] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) President & CEO (Last) (First) (Middle) 2105 CITYWEST BOULEVARD, SUITE 400 3. Date of Earliest Transaction (Month/Day/Year) 03/01/2016 (Street) HOUSTON, TX 77042-2839 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 Common Stock 03/01/2016   A   50,000 (1) A $ 0 90,182 (2) D   Common Stock 03/01/2016   P   20,000 A $ 3.8356 (3) 110,182 D   Common Stock               666 (2) I Shares held by Spouse

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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

Stock Appreciation Right

$ 3.1

(4)

03/01/2026

Common Stock

300,000

300,000

D

Employee Stock Option (right to buy)

$ 3.1

03/01/2017(5)

03/01/2026

Common Stock

100,000

100,000

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Hanson R Brian 2105 CITYWEST BOULEVARD SUITE 400 HOUSTON, TX 77042-2839	X		President & CEO

Signatures

Rebecca F. Sacco, attorney-in-fact		03/02/2016
**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)	Restricted Stock grant issued pursuant to the ION Geophysical Corporation Amended and Restated 2013 Long Term Incentive Plan. Shares will vest in three equal annual installments beginning the first anniversary of the transaction date in Column 2.
(2)	As adjusted for the one-for-fifteen reverse stock split completed on 02/04/2016.
(3)	This transaction was executed in multiple trades at prices ranging from $3.25 to $4.21, inclusive. The price set forth above reflects the weighted-average price per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.
(4)	Issued pursuant to the ION Geophysical Corporation Stock Appreciation Rights Plan. The SARs will vest in one-third increments upon the achievement of performance targets set at 20%, 25% and 30% appreciation of the 20-day volume weighted average price per share over the exercise price of the SAR. No SARs can be exercised prior to the first anniversary of the grant date. Beginning on the first anniversary date, SARs can be exercised up to one-third per year.
(5)	Issued pursuant to the ION Geophysical Corporation Amended and Restated 2013 Long Term Incentive Plan and become exercisable in four equal annual installments beginning on the date specified in Column 6.

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