3-D GEOPHYSICAL INC
Related Filers (4)
- WESTERN ATLAS INC (2)
- ESSEX INVESTMENT MANAGEMENT CO INC (1)
- HEARTLAND ADVISORS INC (1)
- WELLINGTON MANAGEMENT CO LLP (1)
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Financials (4)
10-Q
Thursday, 11/13/1997
Quarterly Report for period ending 1997-09-30
10-Q
Wednesday, 8/13/1997
Quarterly Report for period ending 1997-06-30
10-Q
Tuesday, 5/13/1997
Quarterly Report for period ending 1997-03-31
10-Q
Thursday, 11/14/1996
Quarterly Report for period ending 1996-09-30
News (6)
8-K
Tuesday, 3/10/1998
Current report filing
8-K
Tuesday, 12/23/1997
Current report filing
8-K
Wednesday, 10/8/1997
Current report filing
8-K
Friday, 7/18/1997
Current report filing
8-K/A
Friday, 4/11/1997
Current report filing
8-K
Thursday, 3/27/1997
Current report filing
Other (16)
15-12G
Thursday, 4/30/1998
Notice of termination of registration of a class of securities under Section 12(g)
SC 14D1/A
Friday, 4/10/1998
None
SC 14D9/A
Friday, 4/10/1998
Tender offer solicitation/recommendation statements filed under Rule 14d-9
SC 14D1/A
Wednesday, 4/1/1998
None
SC 14D9/A
Wednesday, 4/1/1998
Tender offer solicitation/recommendation statements filed under Rule 14d-9
10-K405
Monday, 3/30/1998
Annual Report with disclosure of delinquent filers
SC 14D1/A
Friday, 3/27/1998
None
SC 14D9/A
Friday, 3/27/1998
Tender offer solicitation/recommendation statements filed under Rule 14d-9
SC 14D9/A
Wednesday, 3/25/1998
Tender offer solicitation/recommendation statements filed under Rule 14d-9
SC 14D1/A
Thursday, 3/19/1998
None
SC 14D9/A
Thursday, 3/19/1998
Tender offer solicitation/recommendation statements filed under Rule 14d-9
SC 14D1
Friday, 3/13/1998
None
SC 14D9
Friday, 3/13/1998
Tender offer solicitation/recommendation statements filed under Rule 14d-9
8-A12G/A
Monday, 7/21/1997
Form for registration of a class of securities pursuant to Section 12(g)
8-A12B
Friday, 7/18/1997
Form for the registration / listing of a class of securities on a national securities exchange pursuant to Section 12(b)
10-K405
Monday, 3/31/1997
Annual Report with disclosure of delinquent filers
Ownership (9)
3
Tuesday, 4/21/1998
WESTERN ATLAS INC: Initial statement of beneficial ownership of securities
3
Tuesday, 4/21/1998
WESTERN ATLAS INC: Initial statement of beneficial ownership of securities
SC 13D
Thursday, 4/2/1998
WESTERN ATLAS INC: Major Shareholders
SC 13G/A
Tuesday, 2/10/1998
WELLINGTON MANAGEMENT CO LLP: Major Shareholders
SC 13G/A
Friday, 2/6/1998
HEARTLAND ADVISORS INC: Major Shareholders
SC 13G/A
Friday, 10/10/1997
HEARTLAND ADVISORS INC: Major Shareholders
SC 13G
Friday, 2/14/1997
HEARTLAND ADVISORS INC: Major Shareholders
SC 13G
Monday, 2/10/1997
WELLINGTON MANAGEMENT CO LLP: Major Shareholders
SC 13G/A
Wednesday, 12/11/1996
ESSEX INVESTMENT MANAGEMENT CO INC: Major Shareholders
Prospectus (4)
424B1
Wednesday, 12/18/1996
Prospectus filed pursuant to Rule 424(b)(1)
S-1/A
Thursday, 12/12/1996
General form of registration statement for all companies including face-amount certificate companies
S-1/A
Tuesday, 11/19/1996
General form of registration statement for all companies including face-amount certificate companies
S-1
Tuesday, 10/8/1996
General form of registration statement for all companies including face-amount certificate companies