FORM 3
        
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

LAMBERT DALE J		 2. Date of Event Requiring Statement (MM/DD/YYYY)
1/1/2020 

 3. Issuer Name and Ticker or Trading Symbol

ION GEOPHYSICAL CORP [IO]
(Last)        (First)        (Middle)

2105 CITYWEST BLVD., SUITE 100		 4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                          _____ 10% Owner
___X___ Officer (give title below)        _____ Other (specify below)
EVP, Operations Optimization /
(Street)

HOUSTON, TX 77042      

(City)              (State)              (Zip)
5. If Amendment, Date Original Filed(MM/DD/YYYY)
 

6. Individual or Joint/Group Filing(Check Applicable Line)

_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

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 48860 (1)D  

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 4)		2. Date Exercisable and Expiration Date
(MM/DD/YYYY)		3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		4. Conversion or Exercise Price of Derivative Security5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date ExercisableExpiration DateTitleAmount or Number of Shares
Employee Stock Option (right to buy)  (2)12/1/2020 Common Stock 1066 $107.85 D  
Employee Stock Option (right to buy)  (2)12/1/2021 Common Stock 1173 $87.15 D  
Employee Stock Option (right to buy)  (2)12/1/2022 Common Stock 1200 $89.40 D  
Employee Stock Option (right to buy)  (2)12/1/2023 Common Stock 1333 $57.90 D  
Employee Stock Option (right to buy)  (2)3/1/2024 Common Stock 1333 $61.05 D  
Employee Stock Option (right to buy)  (2)3/1/2026 Common Stock 3750 $3.10 D  
Employee Stock Option (right to buy) 3/1/2020 3/1/2026 Common Stock 1250 $3.10 D  
Stock Appreciation Rights  (3)12/1/2028 Common Stock 20498 $8.85 D  
Explanation of Responses:
(1) Includes 39,222 shares of restricted stock and 9,638 shares of common stock.
(2) Fully Vested.
(3) Cash-settled Stock Appreciation Right ("SARs") issued pursuant to the ION Geophysical Corporation 2018 Stock Appreciation Rights Plan. The SARs are subject to both time-based and performance-based vesting requirements. The time-based vesting requirements provide that the SARs vest in three equal installments beginning on the first anniversary of the grant date, subject to satisfaction of the performance-based vesting requirements. The performance-based vesting requirements provide that the SARs vest in three equal portions upon achievement of ION common stock 20 day volume weighted average price per share targets of $17.50, $22.50 and $27.50, subject to satisfaction of the time-based vesting requirements. The maximum value of each SAR is capped at $27.50.
Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
LAMBERT DALE J
2105 CITYWEST BLVD., SUITE 100
HOUSTON, TX 77042

EVP, Operations Optimization
Signatures
/s/ Rebecca F. Sacco, attorney-in-fact1/10/2020
**Signature of Reporting PersonDate
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