X0306 4 2016-03-01 0 0000866609 ION GEOPHYSICAL CORP IO 0001481492 Usher Christopher Theron 2105 CITYWEST BOULEVARD SUITE 400 HOUSTON TX 77042-2839 0 1 0 0 EVP & COO, E&P OPER OPTIMINIZA Common Stock 2016-03-01 4 A 0 12500 0.00 A 18892 D Common Stock 2016-03-01 4 F 0 343 3.10 D 18549 D Employee Stock Option (right to buy) 3.10 2017-03-01 2026-03-01 Common Stock 25000 25000 D Stock Appreciation Right 3.10 2026-03-01 Common Stock 0 150000 D 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. As adjusted for the one-for-fifteen reverse stock split completed on 02/04/2016. Payment of tax liability by delivering or withholding shares incident to the vesting of restricted stock. Issued pursuant to the ION Geophysical Corporation Amended and Restated 2013 Long Term Incentive Plan and becomes exercisable in four equal annual installments beginning on the date specified in Column 6. 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. Rebecca F. Sacco, attorney-in-fact 2016-03-03