UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. _________)* TGC Industries, Inc. ________________________________________________________________________ (Name of Issuer) 8-1/2% Senior Convertible Preferred Stock; and Common Stock (new), $.01 par value per share ________________________________________________________________________ (Title of Class of Securities) 872417308 ____________________________________ (CUSIP Number) 02-23-2004 ------------------------------------------------------- (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: -- Rule 13d-1(b) -X Rule 13d-1(c) -- Rule 13d-1(d) *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise of subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. CUSIP No. 872417308 13G Page 2 of 4 ----------------------------------------------------------------------- (1) Names of Reporting Persons. I.R.S. Indentification Nos. of above persons (entities only). Sidney Todres ------------------------------------------------------------------------ (2) Check the Appropriate Box if a Member of a Group (See Instructions) (a) (b) ------------------------------------------------------------------------ (3) SEC Use Only ------------------------------------------------------------------------ (4) Citizenship or Place of Organization United States ------------------------------------------------------------------------ Number of (5) Sole Voting Power 427,735 Shares -------------------------------------------------------- Beneficially (6) Shared Voting Power -0- Owned by -------------------------------------------------------- Each (7) Sole Dispositive Power 427,735 Reporting -------------------------------------------------------- Person With: (8) Shared Dispositive Power -0- ------------------------------------------------------------------------ (9) Aggregate Amount Beneficially Owned by Each Reporting Person 427,735 includes 300,000 shares of 8-1/2% Senior Convertible Preferred Stock (immediately convertible into Common Stock on a one-for- one basis); and 127,735 shares of Common Stock (New), $.01 par value, per share for a total of 427,735 Common shares, if fully converted. ------------------------------------------------------------------------ (10) Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) ------------------------------------------------------------------------ (11) Percentage of Class Represented by Amount in Row (9) 7.13% ------------------------------------------------------------------------ (12) Type of Reporting Person (See Instructions) Individual ------------------------------------------------------------------------ CUSIP No. 872417308 13G Page 3 of 4 ----------------------------------------------------------------------- Item 1. (a) Name of Issuer: TGC Industries, Inc. (b) Address of Issuer's Principal Executive Offices: 1304 Summit, Suite 2, Plano, Texas 75074 Item 2. (a) Name of Person Filing: Sidney Todres (b) Address of Principal Business Office or, if none, Residence: 250 Park Avenue, New York, New York 10177 (c) Citizenship: United States (d) Title of Class of Securities: 8-1/2% Senior Convertible Preferred Stock and Common Stock (New), $.01 par value per share (e) CUSIP Number: 872417308 Item 3. If this statement is filed pursuant to Sections 240.13d-1(b)or 240.13d-2(b) or (c), check whether the person filing is a: Not Applicable Item 4. Ownership. Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1. (a) Amount beneficially owned: 427,735 shares, consisting of 300,000 shares of 8-1/2% Senior Convertible Preferred Stock (immediately convertible into Common Stock on a one-for-one basis) and 127,735 shares of Common Stock (New), for a total of 427,735 Common shares, if fully converted. (b) Percent of class: 7.13% (c) Number of shares as to which the person has: (i) Sole power to vote or to direct the vote 427,735 (ii) Shared power to vote or to direct the vote -0- (iii) Sole power to dispose or to direct the disposition of 427,735 (iv) Shared power to dispose or to direct the disposition of -0- CUSIP No. 872417308 13G Page 4 of 4 ----------------------------------------------------------------------- Item 5. Ownership of Five Percent or Less of a Class Not Applicable Item 6. Ownership of More than Five Percent on Behalf of Another Person. Not Applicable Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company Not Applicable Item 8. Identification and Classification of Members of the Group. Not Applicable Item 9. Notice of Dissolution of Group Not Applicable Item 10. Certification (b) The following certification shall be included if the statement is filed pursuant to Section 240.13d-1(c): By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. 02/26/04 ____________________________________ Date /s/ Sidney Todres ____________________________________ Signature Sidney Todres ____________________________________ Name todres13g.txt.wpd