United States
Securities and Exchange Commission
Washington, D.C.
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 1 )
Dawson Geophysical Company
(Name of Issuer)
Common Stock
(Title of Class of Securities)
239359102
(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 and
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).
Cusip No. 239359102 13G
1. Name of reporting person
S.S. or I.R.S. Identification no. of the above person
Bjurman, Barry & Associates
IRS Identification No. 95-2654860
2. Check the appropriate box if a member of a group
(a)
(b) _x__
3. SEC Use only
4. Citizenship or place of organization
California
5. Sole Voting Power
310,700
Number of shares 6. Shared Voting Power
beneficially -0-
owned by each reporting 7. Sole Dispositive Power
person with 310,700
8. Shared Dispositive Power
-0-
9. Aggregate amount beneficially owned by each reporting person
310,700
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)
5.578%
12. Type of reporting person
IA
Cusip No. 239359102 13G
1. Name of reporting person
S.S. or I.R.S. Identification no. of the above person
George Andrew Bjurman*
548-72-9457
2. Check the appropriate box if a member of a group
(a)
(b) _x__
3. SEC Use only
4. Citizenship or place of organization
U.S.A.
5. Sole Voting Power
310,700
Number of shares 6. Shared Voting Power
beneficially -0-
owned by each reporting 7. Sole Dispositive Power
person with 310,700
8. Shared Dispositive Power
-0-
9. Aggregate amount beneficially owned by each reporting person
310,700
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)
5.578%
12. Type of reporting person
IN
* The filing of this statement shall not be deemed an admission by George
Andrew Bjurman that he beneficially owns the securities attributed to Bjurman,
Barry & Associates for any purpose.
Cusip No. 239359102 13G
1. Name of reporting person
S.S. or I.R.S. Identification no. of the above person
Owen Thomas Barry III*
480-54-0059
2. Check the appropriate box if a member of a group
(a)
(b) _x__
3. SEC Use only
4. Citizenship or place of organization
U.S.A.
5. Sole Voting Power
310,700
Number of shares 6. Shared Voting Power
beneficially -0-
owned by each reporting 7. Sole Dispositive Power
person with 310,700
8. Shared Dispositive Power
-0-
9. Aggregate amount beneficially owned by each reporting person
310,700
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)
5.578%
12. Type of reporting person
IN
* The filing of this statement shall not be deemed an admission by Owen Thomas
Barry III that he beneficially owns the securities attributed to Bjurman, Barry
& Associates for any purpose.
Item 1.
(a) Name of Issuer:
Dawson Geophysical Company
(b) Address of Issuer's Principal Executive Offices:
508 W. Wall, Ste. 800
Midland, TX 79701-5010
Item 2.
(a) Name of Persons Filing:
Bjurman, Barry & Associates ("BB&A"),
George Andrew Bjurman* and
Owen Thomas Barry III*.
*These individuals may, as a result of their ownership in and
positions with BB&A, be deemed to be indirect beneficial
owners of the equity securities held by BB&A. The filing of
this statement shall not be deemed an admission by George
Andrew Bjurman and Owen Thomas Barry III that either
person beneficially owns the securities attributed to BB&A
for any purpose, regardless of whether they are acting in
concert or acting severally.
(b) Address of Principal Business Office or, if none, Residence:
The business address for BB&A and Messrs. Bjurman
and Barry is 10100 Santa Monica Boulevard, Suite 1200,
Los Angeles, CA 90067.
(c) Citizenship:
BB&A is a corporation organized under the laws of
California. Messrs. Bjurman and Barry are United
States citizens.
(d) Title of Class of Securities:
Common Stock
(e) CUSIP Number:
239359102
Item 3. If this statement is filed pursuant to Rule 13d-1(b), or 13d-2(b),
check whether the person is a:
BB&A is an Investment Adviser registered under section
203 of the Investment Company Act of 1940.
Item 4. Ownership.
(a) Amount Beneficially Owned:
As of July 31, 2004, BB&A beneficially owned
310,700 shares.
* Messrs. Bjurman and Barry may, as a result of their
ownership in and positions with BB&A, be deemed to be
indirect beneficial owners of the equity securities held
by BB&A.
(b) Percent of Class:
5.578%
(c) Number of shares as to which such person has:
(I) sole power to vote or to direct the vote:
310,700**
(ii) shared power to vote or to direct the vote:
-0-
(iii) sole power to dispose or to direct the disposition of:
310,700**
(iv) shared power to dispose or to direct the disposition of:
-0-
**BB&A, as an investment adviser, shares such powers only
to the extent that its clients may be able to give instructions
that would supersede BB&A's otherwise full discretionary
authority over the disposition or voting of the securities in
its portfolios.
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.
Not Applicable
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 and Signature
By signing below I/we 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/our knowledge and
belief, I/we certify that the information set forth in this statement is
true, complete and correct.
12/14/2006
Date
/s/ George Andrew Bjurman
Signature
GEORGE ANDREW BJURMAN, CEO, BB&A
Name/Title
/s/ George Andrew Bjurman
George Andrew Bjurman
/s/ Owen Thomas Barry III
Owen Thomas Barry III
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