<PAGE>
-----------------------------
OMB APPROVAL
UNITED STATES OMB NUMBER 3235-0145
SECURITIES AND EXCHANGE COMMISSION EXPIRES: DECEMBER 31, 1997
WASHINGTON, D.C. 20549 ESTIMATED AVERAGE BURDEN
HOURS PER RESPONSE... 14.90
-----------------------------
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(AMENDMENT NO. )*
Thiokol Corporation
- --------------------------------------------------------------------------------
(Name of Issuer)
Common Stock
- --------------------------------------------------------------------------------
(Title of Class of Securities)
884103102
--------------------------------
(CUSIP Number)
Check the following box if a fee is being paid with this statement [X]. (A fee
is not required only if the filing person: (1) has a previous statement on file
reporting beneficial ownership of more than five percent of the class of
securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such class.)
(See Rule 13d-7).
*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 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).
SEC 1745 (2-95) PAGE 1 OF 11 PAGES
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- ------------------- ----------------------
CUSIP NO. 884103102 13G PAGE 2 OF 11 PAGES
- ------------------- ----------------------
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
John Hancock Mutual Life Insurance Company
I.R.S. No. 04-1414660
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ]
(b) [ ]
N/A
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Commonwealth of Massachusetts
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
NUMBER OF
SHARES -0-
---------------------------------------------------------------
BENEFICIALLY 6 SHARED VOTING POWER
OWNED BY
EACH -0-
---------------------------------------------------------------
REPORTING 7 SOLE DISPOSITIVE POWER
PERSON
WITH -0-
---------------------------------------------------------------
8 SHARED DISPOSITIVE POWER
-0-
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
None, except through its indirect, wholly-owned subsidiaries, NM
Capital Management, Inc. and John Hancock Advisers, Inc.
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES*
N/A
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
See line 9, above.
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IC, BD, IA, HC
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
PAGE 2 OF 11 PAGES
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- ------------------- ----------------------
CUSIP NO. 884103102 13G PAGE 3 OF 11 PAGES
- ------------------- ----------------------
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
John Hancock Subsidiaries, Inc.
I.R.S. No. 04-2687223
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ]
(b) [ ]
N/A
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
NUMBER OF
SHARES -0-
---------------------------------------------------------------
BENEFICIALLY 6 SHARED VOTING POWER
OWNED BY
EACH -0-
---------------------------------------------------------------
REPORTING 7 SOLE DISPOSITIVE POWER
PERSON
WITH -0-
---------------------------------------------------------------
8 SHARED DISPOSITIVE POWER
-0-
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
None, except through its indirect, wholly-owned subsidiaries, NM
Capital Management, Inc. and John Hancock Advisers, Inc.
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES*
N/A
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
See line 9, above.
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
HC
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
PAGE 3 OF 11 PAGES
<PAGE>
- ------------------- ----------------------
CUSIP NO. 884103102 13G PAGE 4 OF 11 PAGES
- ------------------- ----------------------
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
John Hancock Asset Management
I.R.S. No. 04-3279774
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ]
(b) [ ]
N/A
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Commonwealth of Massachusetts
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
NUMBER OF
SHARES -0-
---------------------------------------------------------------
BENEFICIALLY 6 SHARED VOTING POWER
OWNED BY
EACH -0-
---------------------------------------------------------------
REPORTING 7 SOLE DISPOSITIVE POWER
PERSON
WITH -0-
---------------------------------------------------------------
8 SHARED DISPOSITIVE POWER
-0-
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
None, except through its indirect, wholly-owned subsidiaries, NM
Capital Management, Inc. and John Hancock Advisers, Inc.
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES*
N/A
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
See line 9, above.
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
HC
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
PAGE 4 OF 11 PAGES
<PAGE>
- ------------------- ----------------------
CUSIP NO. 884103102 13G PAGE 5 OF 11 PAGES
- ------------------- ----------------------
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
The Berkley Financial Group
I.R.S. No. 04-3145626
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ]
(b) [ ]
N/A
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Commonwealth of Massachusetts
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
NUMBER OF
SHARES -0-
---------------------------------------------------------------
BENEFICIALLY 6 SHARED VOTING POWER
OWNED BY
EACH -0-
---------------------------------------------------------------
REPORTING 7 SOLE DISPOSITIVE POWER
PERSON
WITH -0-
---------------------------------------------------------------
8 SHARED DISPOSITIVE POWER
-0-
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,097,427: 911,427 through its direct, wholly-owned subsidiary,
NM Capital Management, Inc. and 186,000 through its direct,
wholly-owned subsidiary, John Hancock Advisers, Inc.
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES*
N/A
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
6.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
HC
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
PAGE 5 OF 11 PAGES
<PAGE>
- ------------------- ----------------------
CUSIP NO. 884103102 13G PAGE 6 OF 11 PAGES
- ------------------- ----------------------
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
NM Capital Management, Inc.
I.R.S. No. 85-0268885
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ]
(b) [ ]
N/A
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
New Mexico
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
NUMBER OF
SHARES 439,801
---------------------------------------------------------------
BENEFICIALLY 6 SHARED VOTING POWER
OWNED BY
EACH -0-
---------------------------------------------------------------
REPORTING 7 SOLE DISPOSITIVE POWER
PERSON
WITH 911,427
---------------------------------------------------------------
8 SHARED DISPOSITIVE POWER
-0-
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
911,427
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES*
N/A
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
5.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IA
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
PAGE 6 OF 11 PAGES
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The original statement shall be signed by each person on whose behalf
the statement is filed or his authorized representative. If the statement is
signed on behalf of a person by his authorized representative other than an
executive officer or general partner of the filing person, evidence of the
representative's authority to sign on behalf of such person shall be filed with
the statement, provided, however, that a power of attorney for this purpose
which is already on file with the Commission may be incorporated by reference.
The name and any title of each person who signs the statement shall be typed or
printed beneath his signature.
Note: Six copies of this statement, including all exhibits, should be filed
with the Commission.
ATTENTION: INTENTIONAL MISSTATEMENTS OR OMISSIONS OF FACT CONSTITUTE
FEDERAL CRIMINAL VIOLATIONS (SEE 18 U.S.C. 1001)
Item 1(a) Name of Issuer:
--------------
Thiokol Corporation
Item 1(b) Address of Issuer's Principal Executive Offices:
------------------------------------------------
2475 Washington Blvd.
Ogden, Utah 84401
Item 2(a) Name of Person Filing:
--------------------------
This filing is made on behalf of John Hancock Mutual Life
Insurance Company ("JHMLICO"), JHMLICO's direct, wholly-
owned subsidiary, John Hancock Subsidiaries, Inc. ("JHSI"),
JHSI's direct, wholly-owned subsidiary, John Hancock Asset
Management ("JHAM"), JHAM's wholly-owned subsidiary, The
Berkeley Financial Group ("TBFG") and TBFG's direct,
wholly-owned subsidiary, NM Capital Management, Inc.
("NM").
Item 2(b) Address of the Principal Offices:
---------------------------------
The principal business offices of JHMLICO, JHSI and JHAM
are located at John Hancock Place, P.O. Box 111, Boston, MA
02117. The principal business offices of TBFG is located at
101 Huntington Avenue, Boston, Massachusetts 02199. The
principal business office of NM is 6501 Americas Parkway,
Suite 950, Albuquerque, NM 87110-5372.
Item 2(c) Citizenship:
------------
JHMLICO, JHAM and TBFG were organized and exist under the
laws of the Commonwealth of Massachusetts. JHSI was
organized and exists under the laws of the State of
Delaware. NM was organized and exists under the laws of the
State of New Mexico.
Item 2(d) Title of Class of Securities:
-----------------------------
Common Stock
Item 2(e) CUSIP Number:
-------------
884103102
Item 3 If the Statement is being filed pursuant to Rule 13d-1(b),
----------------------------------------------------------
or 13d-2(b), check whether the person filing is a:
--------------------------------------------------
JHMLICO: (a) (X) Broker or Dealer registered under (S)15
of the Act.
(c) (X) Insurance Company as defined in
(S)3(a)(19) of the Act.
(e) (X) Investment Adviser registered under
(S)203 of the Investment Advisers Act of
1940.
PAGE 7 OF 11 PAGES
<PAGE>
(g) (X) Parent Holding Company, in accordance
with (S)240.13d-1(b)(ii)(G).
JHSI (g) (X) Parent Holding Company, in accordance
with (S)240.13d-1(b)(ii)(G).
JHAM (g) (X) Parent Holding Company, in accordance
with (S)240.13d-1(b)(ii)(G).
TBFG (g) (X) Parent Holding Company, in accordance
with (S)240.13d-1(b)(ii)(G).
NM (e) (X) Investment Adviser registered under
(S)203 of the Investment Advisers Act of
1940.
Item 4 Ownership:
----------
(a) Amount Beneficially Owned: NM beneficially owns
--------------------------
911,427 shares of Common Stock in various advisory
accounts. In addition to the shares owned by NM, John
Hancock Advisors, Inc. ("JHA"), an Investment Adviser
registered under (S)203 of the Investment Advisers Act
of 1940 and a direct, wholly-owned subsidiary of TBFG,
beneficially owns 186,000 shares of Common Stock.
Through their parent-subsidiary relationship to NM and
JHA, JHMLICO, JHSI, JHAM and TBFG have indirect,
beneficial ownership of these same shares.
The JHA shares are held by five open-end diversified
management companies registered under (S)8 of the
Investment Company Act.
The John Hancock Growth Fund, an Advisory Agreement
dated September 15, 1995 - 40,000.
The John Hancock Capital Growth Fund, an Advisory
Agreement dated December 22, 1994 -40,000.
John Hancock Growth and Income Fund, an Advisory
Agreement, dated December 22, 1994 -80,000.
John Hancock Special Value Fund, an open-end
diversified management company registered under (S)8 of
the Investment Company Act. Under an Advisory Agreement
dated October 1, 1993, JHA has beneficial ownership of
the 19,000 shares held in the fund.
John Hancock Institutional Series Trust - John Hancock
Fundamental Value Fund, an open-ended diversified
management company registered under (S)8 of the
Investment Company Act. Under an Advisory Agreement
dated April 3, 1995, JHA has beneficial ownership of
the 7,000 shares held in the fund.
(b) Percent of Class:
-----------------
TBFG - 6.0%
NM - 5.0%
(c) (i) sole power to vote or to direct the vote:
NM - 439,801
JHA - 186,000
(ii) shared power to vote or to direct the
vote: -0-
PAGE 8 OF 11 PAGES
<PAGE>
(iii) sole power to dispose or to direct the
disposition of:
NM - 911,427
JHA - 186,000
(iv) shared power to dispose or to direct the
disposition of: -0-
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:
---------------------------------------------------------------
See Item 4(a).
Item 7 Identification and Classification of the Subsidiary which
----------------------------------------------------------
Acquired the Security Being Reported on by the Parent Holding
-------------------------------------------------------------
Company:
---------
See Items 2(a), 3 and 4.
Item 8 Identification and Classification of Members of the Group:
---------------------------------------------------------
Not applicable.
Item 9 Notice of Dissolution of a Group:
--------------------------------
Not applicable.
Item 10 Certification:
-------------
By signing below the undersigned certifies that, to the best of
its knowledge and belief, the securities referred to above were
acquired in the ordinary course of business and were not
acquired for the purpose of and do not have the effect of
changing or influencing the control of the issuer of such
securities and were not acquired in connection with or as a
participant in any transaction having such purpose or effect.
PAGE 9 OF 11 PAGES
<PAGE>
SIGNATURE
After reasonable inquiry and to the best of its knowledge and belief, each
of the undersigned certifies that the information set forth in this statement is
true, complete and correct.
JOHN HANCOCK MUTUAL LIFE INSURANCE COMPANY
By: /s/ Marion L. Nierintz
---------------------------------------
Name: Marion L. Nierintz
-------------------------------------
Dated: 2/2/96 Title: Second Vice President
-------------------- ------------------------------------
JOHN HANCOCK SUBSIDIARIES, INC.
By: /s/ Marion L. Nierintz
---------------------------------------
Name: Marion L. Nierintz
-------------------------------------
Dated: 2/2/96 Title: Secretary
-------------------- ------------------------------------
JOHN HANCOCK ASSET MANAGEMENT
By: /s/ James H. Young
---------------------------------------
Name: James H. Young
-------------------------------------
Dated: 2/2/96 Title: Secretary
-------------------- ------------------------------------
THE BERKELEY FINANCIAL GROUP
By: /s/ Susan S. Newton
---------------------------------------
Name: Susan S. Newton
-------------------------------------
Dated: 2/1/96 Title: Vice President
-------------------- ------------------------------------
NM CAPITAL MANAGEMENT, INC.
By: /s/ Susan S. Newton
---------------------------------------
Name: Susan S. Newton
-------------------------------------
Dated: 2/1/96 Title: Vice President
-------------------- ------------------------------------
PAGE 10 OF 11 PAGES
<PAGE>
EXHIBIT A
JOINT FILING AGREEMENT
----------------------
John Hancock Mutual Life Insurance Company, John Hancock Subsidiaries,
Inc., John Hancock Asset Management, The Berkeley Financial Group and NM Capital
Management, Inc. agree that the Initial Schedule 13G to which this Agreement is
attached, relating to the Common Stock of Thiokol Corporation is filed on behalf
of each of them.
JOHN HANCOCK MUTUAL LIFE INSURANCE COMPANY
By: /s/ Marion L. Nierintz
---------------------------------------
Name: Marion L. Nierintz
-------------------------------------
Dated: 2/2/96 Title: Second Vice President
-------------------- ------------------------------------
JOHN HANCOCK SUBSIDIARIES, INC.
By: /s/ Marion L. Nierintz
---------------------------------------
Name: Marion L. Nierintz
-------------------------------------
Dated: 2/2/96 Title: Secretary
-------------------- ------------------------------------
JOHN HANCOCK ASSET MANAGEMENT
By: /s/ James H. Young
---------------------------------------
Name: James H. Young
-------------------------------------
Dated: 2/2/96 Title: Secretary
-------------------- ------------------------------------
THE BERKELEY FINANCIAL GROUP
By: /s/ Susan S. Newton
---------------------------------------
Name: Susan S. Newton
-------------------------------------
Dated: 2/1/96 Title: Vice President
-------------------- ------------------------------------
NM CAPITAL MANAGEMENT, INC.
By: /s/ Susan S. Newton
---------------------------------------
Name: Susan S. Newton
-------------------------------------
Dated: 2/1/96 Title: Vice President
-------------------- ------------------------------------
PAGE 11 OF 11 PAGES
