<PAGE>
-----------------------------
OMB APPROVAL
-----------------------------
OMBA Number: 3235-0145
Expires: October 31, 1994
Estimated average burden
hours per response ... 14.90
-----------------------------
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. 3 )*
---------
Abraxas Petroleum Corp.
- --------------------------------------------------------------------------------
(Name of Issuer)
Common Stock
- --------------------------------------------------------------------------------
(Title of Class of Securities)
003830106
-----------------------
(CUSIP Number)
Check the following box if a fee 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") 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).
Page 1 of 8 pages
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 003830106 13G PAGE 2 OF 8 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Wanger Asset Management, L.P. 36-3820584
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
Not Applicable (b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF None
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
110,000
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING None
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
110,000
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
110,000
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
Not Applicable
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
1.89%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IA
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 003830106 13G PAGE 3 OF 8 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Wanger Asset Management, Ltd.
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
Not Applicable (b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF None
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
110,000
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING None
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
110,000
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
110,000
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
Not Applicable
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
1.89%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
CO
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 003830106 13G PAGE 4 OF 8 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Ralph Wanger
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
Not Applicable (b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
U.S.A.
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF None
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
110,000
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING None
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
110,000
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
110,000
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
Not Applicable
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
1.89%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IN
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
Item 1(a) Name of Issuer:
Abraxas Petroleum Corp.
Item 1(b) Address of Issuer's Principal Executive Offices:
909 NE Loop 410, Ste. 900
San Antonio, TX 78209
Item 2(a) Name of Person Filing:
Wanger Asset Management, L.P. ("WAM");
Wanger Asset Management, Ltd., the general partner of WAM
("WAM LTD.");
Ralph Wanger ("Wanger")
Item 2(b) Address of Principal Business Office:
WAM, WAM LTD. and Wanger are all located at:
227 West Monroe Street, Suite 3000
Chicago, Illinois 60606
Item 2(c) Citizenship:
WAM is a Delaware limited partnership.
WAM LTD. is a Delaware corporation.
Wanger is a U.S. citizen.
Item 2(d) Title of Class of Securities:
Common Stock
Item 2(e) CUSIP Number:
003830106
Item 3 Type of Person:
(e) WAM is an Investment Adviser registered under section
203 of the Investment Advisers Act of 1940; WAM LTD. is the
General Partner of the Investment Adviser; Wanger is the
principal stockholder of the General Partner.
Page 5 of 8 pages
<PAGE>
Item 4 Ownership (at December 31, 1996):
(a) Amount owned "beneficially" within the meaning of rule
13d-3:
110,000 shares
(b) Percent of class:
1.89% (based on 5,804,812 shares outstanding as of
November 14, 1996)
(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the vote: none
(ii) shared power to vote or to direct the vote:
110,000
(iii) sole power to dispose or to direct the
disposition of: none
(iv) shared power to dispose or to direct
disposition of: 110,000
WAM serves as investment adviser to Acorn Investment
Trust, Series Designated Acorn Fund (the "Trust").
Various of WAM's limited partners and employees are also
officers and trustees of the Trust, but WAM does not
consider the Trust to be controlled by such persons.
Although the Trust is not controlled by WAM, pursuant to
rule 13d-3(a) the 110,000 shares beneficially owned by
the Trust, with respect to which the Trust has delegated
to WAM shared voting power and shared dispositive power,
are considered to be shares beneficially owned by WAM by
reason of such delegated powers. In addition to the
shares beneficially owned by the Trust, other clients of
WAM may own shares which are not included in the
aggregate number of shares reported herein because WAM
does not have or share voting or investment power over
those shares.
Item 5 Ownership of 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 five percent of a class of
equity security, check the following (X).
Item 6 Ownership of More than Five Percent on Behalf of Another Person:
The shares reported herein have been acquired on behalf of
discretionary clients of WAM. Persons other than WAM are
entitled to receive all dividends from, and proceeds from
the sale of, those shares.
Page 6 of 8 pages
<PAGE>
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:
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.
Page 7 of 8 pages
<PAGE>
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 14, 1997
The undersigned corporation, on the date above written, agrees
and consents to the joint filing on its behalf of this Schedule
13G in connection with its beneficial ownership of the security
reported herein.
WANGER ASSET MANAGEMENT, LTD.
for itself and as general partner of
WANGER ASSET MANAGEMENT, L.P.
By: /s/ Bruce H. Lauer
-------------------------------------
Bruce H. Lauer
Vice President
The undersigned corporation, on the date above written, agrees
and consents to the joint filing on his behalf of this Schedule
13G in connection with his beneficial ownership of the security
reported herein.
RALPH WANGER
/s/ Ralph Wanger
----------------------------------------
Page 8 of 8 pages
<PAGE>
--------------------------
OMB APPROVAL
--------------------------
OMBA Number: 3235-0145
Expires: October 31, 1994
Estimated average burden
hours per response...14.90
--------------------------
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. 2 )*
----------
Abraxas Petroleum Corp.
- --------------------------------------------------------------------------------
(Name of Issuer)
Common Stock
- --------------------------------------------------------------------------------
(Title of Class of Securities)
003830106
------------------------------
(CUSIP Number)
Check the following box if a fee 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") 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).
Page 1 of 8 pages
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 003830106 13G PAGE 2 OF 8 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Wanger Asset Management, L.P. 36-3820584
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
Not Applicable (b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF None
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
516,000
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING None
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
516,000
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
516,000
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
Not Applicable
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
8.92%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IA
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 003830106 13G PAGE 3 OF 8 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Wanger Asset Management, Ltd.
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
Not Applicable (b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF None
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
516,000
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING None
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
516,000
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
516,000
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
Not Applicable
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
8.92%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
CO
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 003830106 13G PAGE 4 OF 8 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Ralph Wanger
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
Not Applicable (b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
U.S.A.
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF None
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
516,000
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING None
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
516,000
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
516,000
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
Not Applicable
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
8.92%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IN
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
Item 1(a) Name of Issuer:
Abraxas Petroleum Corp.
Item 1(b) Address of Issuer's Principal Executive Offices:
909 NE Loop 410, Ste. 900
San Antonio, TX 78209
Item 2(a) Name of Person Filing:
Wanger Asset Management, L.P. ("WAM");
Wanger Asset Management Ltd., the general partner of
WAM ("WAM LTD.");
Ralph Wanger ("Wanger")
Item 2(b) Address of Principal Business Office:
WAM, WAM LTD. and Wanger are all located at:
227 West Monroe Street, Suite 3000
Chicago, Illinois 60606
Item 2(c) Citizenship:
WAM is a Delaware limited partnership.
WAM LTD. is a Delaware corporation.
Wanger is a U.S. citizen.
Item 2(d) Title of Class of Securities:
Common Stock
Item 2(e) CUSIP Number:
003830106
Item 3 Type of Person:
(e) WAM is an Investment Adviser registered under
section 203 of the Investment Advisers Act of 1940; WAM
LTD. is the General Partner of the Investment Adviser;
Wanger is the principal stockholder of the General
Partner.
Page 5 of 8 pages
<PAGE>
Item 4 Ownership (at December 31, 1995):
--
(a) Amount owned "beneficially" within the meaning of
rule 13d-3:
516,000 shares
(b) Percent of class:
8.92% (based on 5,787,262 shares outstanding as of
December 31, 1995)
(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the
vote: none
(ii) shared power to vote or to direct the
vote: 516,000
(iii) sole power to dispose or to direct the
disposition of: none
(iv) shared power to dispose or to direct
disposition of: 516,000
WAM serves as investment adviser to Acorn
Investment Trust, Series Designated Acorn Fund
(the "Trust"). Various of WAM's limited partners
and employees are also officers and trustees of
the Trust, but WAM does not consider the Trust to
be controlled by such persons. Although the Trust
is not controlled by WAM, pursuant to rule 13d-
3(a) the 360,000 shares beneficially owned by the
Trust, with respect to which the Trust has
delegated to WAM shared voting power and shared
dispositive power, are considered to be shares
beneficially owned by WAM by reason of such
delegated powers. In addition to the shares
beneficially owned by the Trust, other clients of
WAM may own shares which are not included in the
aggregate number of shares reported herein because
WAM does not have or share voting or investment
power over those shares.
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:
The shares reported herein have been acquired on behalf
of discretionary clients of WAM. Persons other than WAM
are entitled to receive all dividends from, and
proceeds from the sale of, those shares.
Page 6 of 8 pages
<PAGE>
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:
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.
Page 7 of 8 pages
<PAGE>
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, 1996
The undersigned corporation, on the date above written,
agrees and consents to the joint filing on its behalf of
this Schedule 13G in connection with its beneficial
ownership of the security reported herein.
WANGER ASSET MANAGEMENT, LTD.
for itself and as general partner of
WANGER ASSET MANAGEMENT, L.P.
By: /s/ Robert M. Slotky
------------------------------------
Robert M. Slotky
Chief Financial Officer
The undersigned individual, on the date above written,
agrees and consents to the joint filing on his behalf of
this Schedule 13G in connection with his beneficial
ownership of the security reported herein.
RALPH WANGER
/s/ Ralph Wanger
----------------------------------------
Page 8 of 8 pages
<PAGE>
----------------------------
OMB APPROVAL
----------------------------
OMBA Number: 3235-0145
Expires: October 31, 1994
Estimated average burden
hours per response ... 14.90
----------------------------
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. 1 )*
-----------
Abraxas Petroleum Corp.
- ------------------------------------------------------------------------------
(Name of Issuer)
Common Stock
- ------------------------------------------------------------------------------
(Title of Class of Securities)
003830106
-------------------
(CUSIP Number)
Check the following box if a fee 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") 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).
Page 1 of 8 pages
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 003830106 13G PAGE 2 OF 8 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Wanger Asset Management, L.P. 36-3820584
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
Not Applicable (b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF None
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
415,000
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING None
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
415,000
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
415,000
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
Not Applicable
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
9.63%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IA
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 003830106 13G PAGE 3 OF 8 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Wanger Asset Management, Ltd.
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
Not Applicable (b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF None
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
415,000
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING None
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
415,000
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
415,000
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
Not Applicable
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
9.63%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
CO
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 003830106 13G PAGE 4 OF 8 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Ralph Wanger
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
Not Applicable (b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
U.S.A.
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF None
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
415,000
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING None
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
415,000
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
415,000
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
Not Applicable
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
9.63%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IN
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
Item 1(a) Name of Issuer:
Abraxas Petroleum Corp.
Item 1(b) Address of Issuer's Principal Executive Offices:
909 NE Loop 410, Ste. 900
San Antonio, TX 78209
Item 2(a) Name of Person Filing:
Wanger Asset Management, L.P. ("WAM");
Wanger Asset Management Ltd., the general partner of
WAM ("WAM LTD.");
Ralph Wanger ("Wanger")
Item 2(b) Address of Principal Business Office:
WAM, WAM LTD. and Wanger are all located at:
227 West Monroe Street, Suite 3000
Chicago, Illinois 60606
Item 2(c) Citizenship:
WAM is a Delaware limited partnership.
WAM LTD. is a Delaware corporation.
Wanger is a U.S. citizen.
Item 2(d) Title of Class of Securities:
Common Stock
Item 2(e) CUSIP Number:
003830106
Item 3 Type of Person:
(e) WAM is an Investment Adviser registered under
section 203 of the Investment Advisers Act of 1940; WAM
LTD. is the General Partner of the Investment Adviser;
Wanger is the principal stockholder of the General
Partner.
Page 5 of 8 pages
<PAGE>
Item 4 Ownership (at December 31, 1994):
--
(a) Amount owned "beneficially" within the meaning of rule
13d-3:
415,000 shares
(b) Percent of class:
9.63%
(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the vote:
none
(ii) shared power to vote or to direct the vote:
415,000
(iii) sole power to dispose or to direct the
disposition of: none
(iv) shared power to dispose or to direct
disposition of: 415,000
WAM serves as investment adviser to Acorn Investment
Trust, Series Designated Acorn Fund (the "Trust").
Various of WAM's limited partners and employees are
also officers and trustees of the Trust, but WAM does
not consider the Trust to be controlled by such
persons. Although the Trust is not controlled by WAM,
pursuant to rule 13d-3(a) the 300,000 shares
beneficially owned by the Trust, with respect to which
the Trust has delegated to WAM shared voting power and
shared dispositive power, are considered to be shares
beneficially owned by WAM by reason of such delegated
powers. In addition to the shares beneficially owned by
the Trust, other clients of WAM may own shares which
are not included in the aggregate number of shares
reported herein because WAM does not have or share
voting or investment power over those shares.
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:
The shares reported herein have been acquired on behalf of
discretionary clients of WAM. Persons other than WAM are
entitled to receive all dividends from, and proceeds from
the sale of, those shares.
Page 6 of 8 pages
<PAGE>
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:
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.
Page 7 of 8 pages
<PAGE>
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 8, 1995
The undersigned corporation, on the date above written,
agrees and consents to the joint filing on its behalf of
this Schedule 13G in connection with its beneficial
ownership of the security reported herein.
WANGER ASSET MANAGEMENT, LTD.
for itself and as general partner of
WANGER ASSET MANAGEMENT, L.P.
By: /s/ Robert M. Slotky
-------------------------------------
Robert M. Slotky
Chief Financial Officer
The undersigned individual, on the date above written,
agrees and consents to the joint filing on his behalf of
this Schedule 13G in connection with his beneficial
ownership of the security reported herein.
RALPH WANGER
/s/ Ralph Wanger
-----------------------------------------
Page 8 of 8 pages
<PAGE>
--------------------------
OMB APPROVAL
--------------------------
OMBA Number: 3235-0145
Expires: October 31, 1994
Estimated average burden
hours per response...14.90
--------------------------
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No.__________)*
Abraxas Petroleum Corp.
- --------------------------------------------------------------------------------
(Name of Issuer)
Common Stock
- --------------------------------------------------------------------------------
(Title of Class of Securities)
00383010
------------------------------
(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).
Page 1 of 6 pages
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 13G PAGE 2 OF 6 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Wanger Asset Management, L.P. 36-3820584
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
Not Applicable (b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF None
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
285,000
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING None
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
285,000
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
285,000
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
Not Applicable
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
6.82%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IA
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
Page 2 of 6 pages
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 00383010 13G PAGE 3 OF 6 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Wanger Asset Management, Ltd.
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
Not Applicable (b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF None
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
285,000
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING None
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
285,000
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
285,000
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
Not Applicable
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
6.82%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
CO
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
Page 3 of 6 pages
<PAGE>
Item 1(a) Name of Issuer:
Abraxas Petroleum Corp.
Item 1(b) Address of Issuer's Principal Executive Offices:
909 N.E. Loop 410, Suite 900
San Antonio, Texas 78209
Item 2(a) Name of Person Filing:
Wanger Asset Management, L.P. ("WAM");
Wanger Asset Management, Ltd., the general partner of
WAM ("WAM LTD.")
Item 2(b) Address of Principal Business Office:
WAM and WAM LTD. and Wanger are both located at
227 West Monroe Street, Suite 3000
Chicago, Illinois 60606
Item 2(c) Citizenship:
WAM is a Delaware limited partnership.
WAM LTD. is a Delaware corporation.
Item 2(d) Title of Class of Securities:
Common Stock
Item 2(e) CUSIP Number:
00383010
Item 3 Type of Person:
(e) Investment Adviser registered under section 203 of
the Investment Advisers Act of 1940
Item 4 Ownership (at December 31, 1993):
--
(a) Amount owned "beneficially" within the meaning of
rule 13d-3:
285,000 shares
(b) Percent of class:
6.82%
-4 of 6-
<PAGE>
(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the vote: none
(ii) shared power to vote or to direct the vote:
285,000
(iii) sole power to dispose or to direct the
disposition of: none
(iv) shared power to dispose or to direct
disposition of: 285,000
WAM serves as investment adviser to Acorn Investment Trust,
Series Designated Acorn Fund (the "Trust"). Various of WAM's
limited partners and employees are also officers and
trustees of the Trust, but WAM does not consider the Trust
to be controlled by such persons. Although the Trust is not
controlled by WAM, pursuant to rule 13d-3(a) the 215,000
shares beneficially owned by the Trust, with respect to
which the Trust has delegated to WAM shared voting power and
shared dispositive power, are considered to be shares
beneficially owned by WAM by reason of such delegated
powers. In addition to the shares beneficially owned by the
Trust, other clients of WAM may own shares which are not
included in the aggregate number of shares reported herein
because WAM does not have or share voting or investment
power over those shares.
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:
The shares reported herein have been acquired on behalf of
discretionary clients of WAM. Persons other than WAM are
entitled to receive all dividends from, and proceeds from
the sale of, those shares.
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
- 5 of 6 -
<PAGE>
Item 10 Certification:
By signing below I certify that, to the best of my knowledge
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 10, 1994
WANGER ASSET MANAGEMENT, LTD.,
for itself and as general partner for
WANGER ASSET MANAGEMENT, L.P.
By:/s/Robert M. Slotky
------------------------------------
Robert M. Slotky
Chief Financial Officer
- 6 of 6 -
