SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. ___)
Advanced Technology Material
- -----------------------------------
(Name of Issuer)
Common Stock
- -----------------------------------
(Title of Class of Securities)
00754X105
- -----------------------------------
(CUSIP Number)
Check the following box if a fee / X /
is being paid with this statement
(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") of 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).
(Continued on following pages)
<PAGE>
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Cusip No. 00754X105 13G Page 2 of 4 Pages
- --------------------- -------------------------
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1. NAME OF REPORTING PERSON
S.S OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Oppenheimer Management Corporation
I.R.S. NO. 13-2527171
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2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP *
A / /
B / X /
- -------------------------------------------------------------------
3. SEC USE ONLY
- -------------------------------------------------------------------
4. CITIZENSHIP OR PLACE OF ORGANIZATION
Colorado
- -------------------------------------------------------------------
NUMBER OF 5. SOLE VOTING POWER
SHARES 0
BENEFICIALLY -----------------------------------------------
OWNED BY 6. SHARED VOTING POWER
EACH 0
REPORTING -----------------------------------------------
PERSON WITH 7. SOLE DISPOSITIVE POWER
0
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8. SHARED DISPOSITIVE POWER
380,000
- -------------------------------------------------------------------
9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
380,000
- -------------------------------------------------------------------
10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES *
- -------------------------------------------------------------------
11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
6.10%
- -------------------------------------------------------------------
12. TYPE OF REPORTING PERSON
IA
- -------------------------------------------------------------------
* SEE INSTRUCTIONS BEFORE FILLING OUT!<PAGE>
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Schedule 13G
Under the Securities Exchange Act of 1934
Check the following box if a fee
is being paid with this statement / X /
Item 1(a) Name of Issuer:
Advanced Technology Material
Item 1(b) Address of Issuer's Principal Executive Offices:
7 Commerce Drive
Danbury, CT 06810
Item 2(a) Name of Person Filing:
Oppenheimer Management Corporation
Item 2(b) Address of Principal Business Office:
Two World Trade Center, Suite 3400
New York, New York 10048-0203
Item 2(c) Citizenship:
Inapplicable
Item 2(d) Title of Class of Securities:
Common Stock
Item 2(e) CUSIP Number:
00754X105
Item 3(e) X Investment Adviser registered under Section
203 of the Investment Advisers Act of 1940
Item 4(a) Amount Beneficially Owned: 380,000 shares
Item 4(b) Percent of Class: 6.10%
Item 4(c)(i) Sole Power to vote or to direct the vote - 0
Item 4(c)(ii) Shared power to vote or to direct the vote - 0
Item 4(c)(iii) Sole power to dispose or to direct the
disposition of - 0
Item 4(c)(iv) Shared power to dispose or to direct the
disposition of - 380,000 shares
Item 5 Ownership to Five Percent or Less of a Class:
If this statement is being filed to report the fact that
as of the date hereof, the reporting person has ceased to
be the beneficial owner of more than 5% of the class of
securities, check the following:
Item 6 Ownership of More than Five Percent on Behalf of Another
Person:
Inapplicable.
Item 7 Identification and Classification of the Subsidiary Which
Acquired the Security Being Reported on By the Parent
Holding Company:
Inapplicable
Item 8 Identification and Classification of Members of the Group:
Inapplicable
Item 9 Notice of Dissolution of Group:
Inapplicable
Item 10 Certification:
By signing below, I certify that, to the best of my
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.
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.
Date: February 9, 1994
Signature: /s/ Robert G. Zack
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Name/Title: Robert G. Zack, Senior Vice President
