Sec Form 13G Filing - DISCIPLINED GROWTH INVESTORS INC filing for GEOSPACE TECHNOLOGIES CORP (GEOS) - 2023-02-14

Insider filing report for Changes in Beneficial Ownership

  • Schedule 13G & 13D forms are used to report a party's ownership of stock which exceeds 5% of a company's total stock issue.
  • Schedule 13G is a shorter version of Schedule 13D with fewer reporting requirements.
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SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G/A

Under the Securities Exchange Act of 1934

(Amendment No: 2)

GEOSPACE TECHNOLOGIES CORPORATION
--------------------------------------------------------
(Name of Issuer)

 Class A  Common Stock
--------------------------------------------------------
(Title of Class of Securities)

37364X109
--------------------------------------------------------
(CUSIP Number)

December 31, 2022
--------------------------------------------------------
(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to
which this Schedule is filed:

[X] Rule 13d-1(b)
[ ] Rule 13d-1(c)
[ ] Rule 13d-1(d)


*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).





CUSIP No.   37364X109

(1)Names of reporting persons.

Disciplined Growth Investors, Inc.


(2) Check the appropriate box if a member of a group
(a) [  ]
(b) [  ]


(3) SEC use only

(4) Citizenship or place of organization

Minnesota

Number of shares beneficially owned by each reporting person with:

(5) Sole voting power

 1533790

(6) Shared voting power

 0

(7) Sole dispositive power

1533790

(8) Shared dispositive power

 0

(9) Aggregate amount beneficially owned by each reporting person

1533790

(10) Check if the aggregate amount in Row (9) excludes certain shares

(11) Percent of class represented by amount in Row 9

 11.78%

(12) Type of reporting person

IA





Item 1.

Item 1(a) Name of issuer:
-----------------------------------------------------------------------

GEOSPACE TECHNOLOGIES CORPORATION

Item 1(b) Address of issuer's principal executive offices:
-----------------------------------------------------------------------

7007 PINEMONT DRIVE
HOUSTON TX 77040


Item 2.


2(a) Name of person filing:
----------------------------------------------------------------------
Disciplined Growth Investors, Inc.


2(b) Address or principal business office or, if none, residence:
-----------------------------------------------------------------------
150 South Fifth Street
Suite 2550
Minneapolis, MN 55402


2(c) Citizenship:
--------------------------------------------------------------------
U.S.A.


2(d) Title of class of securities:
-------------------------------------------------------------------

Common Stock

2(e) CUSIP No.: 37364X109
See Cover Page






Item 3.

If this statement is filed pursuant to Rules 13d-1(b), or 13d-2(b) or (c),
check whether the person filing is a:
[ ] Broker or dealer registered under Section 15 of the Act;
[ ] Bank as defined in Section 3(a)(6) of the Act;
[ ] Insurance company as defined in Section 3(a)(19) of the Act;
[ ] Investment company registered under Section 8 of the
Investment Company Act of 1940;
[X] An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E);
[ ] An employee benefit plan or endowment fund in accordance with
            Rule 13d-1(b)(1)(ii)(F);
[ ] A parent holding company or control person in accordance with
            Rule 13d-1(b)(1)(ii)(G);
[ ] A savings associations as defined in Section 3(b) of the Federal
            Deposit Insurance Act (12 U.S.C. 1813);
[ ] A church plan that is excluded from the definition of an
            investment company under section 3(c)(14) of the Investment Company
            Act of 1940;
[ ] A non-U.S. institution in accordance with
            Rule 240.13d-1(b)(1)(ii)(J);
[ ] Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K). If filing
            as a non-U.S. institution in accordance with
            Rule 240.13d-1(b)(1)(ii)(J), please specify the type of
            institution:


Item 4. Ownership

Provide the following information regarding the aggregate number
and percentage of the class of securities of the issuer identified in Item 1.


Amount beneficially owned:

  1533790

Percent of class

  11.78%

Number of shares as to which such person has:

Sole power to vote or to direct the vote

   1533790

Shared power to vote or to direct the vote

  0

Sole power to dispose or to direct the disposition of

   1533790

Shared power to dispose or to direct the disposition of

  0









Item 5.

Ownership of 5 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 percent of the
class of securities, check the following [  ].


Item 6. Ownership of More than 5 Percent on Behalf of Another Person

  If any other person is known to have the right to receive or the power
  to direct the receipt of dividends from, or the proceeds from the sale
  of, such securities, a statement to that effect should be included in
  response to this item and, if such interest relates to more than 5 percent
  of the class, such person should be identified. A listing of the
  shareholders of an investment company registered under the Investment
  Company Act of 1940 or the beneficiaries of employee benefit plan,
  pension fund or endowment fund is not required.

  Various persons have the right to receive or the power to direct
   the receipt of dividends from, or the proceeds from the sale of
   the common stock of
   GEOSPACE TECHNOLOGIES CORPORATION
   No one person's interest in the common stock of
   GEOSPACE TECHNOLOGIES CORPORATION
   is more than five percent of the total outstanding common shares.

Item 7. Identification and Classification of the Subsidiary Which
Acquired the Security Being Reported on by the Parent Holding
Company or Control Person.


Item 8. Identification and Classification of Members of the Group


If a group has filed this schedule pursuant to Rule 13d-1(b)(ii)(J),
so indicate under Item 3(j) and attach an exhibit stating the identity
and Item 3 classification of each member of the group. If a group
has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d),
attach an exhibit stating the identity of each member of the group.


Item 9. Notice of Dissolution of Group

Notice of dissolution of a group may be furnished as an exhibit
stating the date of the dissolution and that all further filings with
respect to transactions in the security reported on will be filed,
if required, by members of the group, in their individual capacity.

Item 10. Certifications
By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were acquired and are
held in the ordinary course of business and were not acquired
and are not held for the purpose of or with the effect of changing
or influencing the control of the issuer of the securities and were
not acquired and are not held in connection with or as a participant
in any transaction having that 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.


Dated: February 14, 2023
Disciplined Growth Investors, Inc.


By:_ /s/ Peter Rieke
Name: Peter Rieke
Title: CCO


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.



Attention: Intentional misstatements or omissions of fact constitute
Federal criminal violations (see 18 U.S.C. 1001).