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Ownership Document
|
| Schema Version: X0202 |
| Document Type: 4 |
| Period of Report: 9/13/04 |
| Not Subject to Section 16: 0 |
| Issuer: |
| Issuer CIK: 866609 |
| Issuer Name: INPUT OUTPUT INC |
| Issuer Trading Symbol: IO |
| Reporting Owner: |
| Reporting Owner ID: |
| | Owner CIK: 1228220 |
| | Owner Name: SMITH SAM K |
| Reporting Owner Address: |
| | Owner Street 1: 12300 PARC CREST DRIVE |
| | Owner Street 2: |
| | Owner City: STAFFORD |
| | Owner State: TX |
| | Owner ZIP Code: 77477 |
| | Owner State Description: |
| Reporting Owner Relationship: |
| | Is Director? Yes |
| | Is Officer? No |
| | Is Ten Percent Owner? No |
| | Is Other? No |
| Non-Derivative Table: |
| Non-Derivative Transaction: |
| | Security Title: |
| | | Value: Common stock |
| | Transaction Date: |
| | | Value: 9/13/04 |
| | Deemed Execution Date: |
| | Transaction Coding: |
| | | Transaction Form Type: 4 |
| | | Transaction Code: A |
| | | Equity Swap Involved? No |
| | Transaction Timeliness: |
| | | Value: |
| | Transaction Amounts: |
| | | Transaction Shares: |
| Value: 2,581 |
| Footnote ID: F1 |
| | | Transaction Price Per Share: |
| Value: 0.00 |
| | | Transaction Acquired-Disposed Code: |
| Value: A |
| | Post-Transaction Amounts: |
| | | Shares Owned Following Transaction: |
| Value: 26,588 |
| | Ownership Nature: |
| | | Direct or Indirect Ownership: |
| Value: D |
| Footnotes: |
| Footnote - F1: Issued pursuant to the Input/Output, Inc. Non-Employee Directors' Retainer Plan. |
| Remarks: |
| Owner Signature: |
| Signature Name: /s/ Debra A. Addington, Attorney-in-fact |
| Signature Date: 9/15/04 |
