Thermo Optek Corp Watch

15-12B

Securities registration termination

05/12/00

SC 13E3/A

Going private transaction – amended

05/12/00

10-K/A

ended 01/01/00 FY 1999 – amended

05/01/00

SC 13E3/A

Going private transaction – amended

04/20/00

SC 13E3/A

Going private transaction – amended

04/17/00

10-K

ended 12/34/56 ## ####

03/17/00

SC 13E3

##### ####### ###########

03/06/00

8-K

##### ####### ######### ########## ### ########

02/01/00

10-Q

ended 12/34/56 ##

11/08/99

8-A12B/A

############ ## ########## ## ######## ####### #######

09/17/99

10-Q

ended 12/34/56 ##

08/11/99

S-8

############ ## ########## ### #########

06/23/99

10-Q

ended 12/34/56 ##

05/11/99

DEF 14A

########## #####

04/20/99

8-K

##### ####### ######### ########## ### ########

03/26/99

10-K

ended 12/34/56 ## ####

03/19/99

S-8

############ ## ########## ### #########

11/24/98

10-Q

ended 12/34/56 ##

11/10/98

8-K

##### ######

09/29/98

10-Q

ended 12/34/56 ##

08/13/98

SC 13D/A

Thermo Fisher Scientific Inc

02/01/00

SC 13D/A

Thermo Fisher Scientific Inc

12/19/97

SC 13D/A

Thermo Fisher Scientific Inc

06/13/97

SC 13D

Thermo Instrument Systems Inc

07/09/96