DAWSON GEOPHYSICAL CO

Q: Dec 31 2014

FY: Sep 30 2014

Q: Jun 30 2014

Q: Mar 31 2014

Q: Dec 31 2013

FY: Sep 30 2013

Q: Jun 30 2013

Q: Mar 31 2013

Q: Dec 31 2012

FY: Sep 30 2012

Q: Jun 30 2012

Q: Mar 31 2012

Q: Dec 31 2011

FY: Sep 30 2011

Q: Jun 30 2011

Q: Mar 31 2011

Q: Dec 31 2010

FY: Sep 30 2010

Q: Jun 30 2010

Q: Mar 31 2010

2.01,3.01,3.03,5.01,5.02,5.03,8.01,9.01

5.07,7.01,8.01,9.01

8.01,9.01

8.01

8.01,9.01

8.01,9.01

7.01,8.01,9.01

7.01,9.01

8.01,9.01

2.02,9.01

7.01,9.01

1.01,3.03,8.01,9.01

7.01,8.01,9.01

7.01,9.01

2.02,9.01

7.01,9.01

Results of Operations and Financial Condition

Results of Operations and Financial Condition

Regulation FD Disclosure

5.02

Certification of termination of registration of a class of securities (Section 12(b))

Notice of Effectiveness

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post-effective amendment to a registration statement

Notification of removal from listing and/or registration on a national securities exchange

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

No description available

Preliminary Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

DIMENSIONAL FUND ADVISORS LP

PARADIGM CAPITAL MANAGEMENT INC/NY

none

TOBIAS C RAY

JUMPER STEPHEN C

COOPER CRAIG W

Thomas James W

Vander Ploeg Mark A

HOOVER GARY M

THOMPSON TIM C

North Ted R

PARADIGM CAPITAL MANAGEMENT INC/NY

HAGAN CHRISTINA W

none

GRACE & WHITE INC /NY

none

HAGAN CHRISTINA W

Thomas James W

JUMPER STEPHEN C

TOBIAS C RAY

Letter from the SEC

Correspondence with the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Correspondence with the SEC

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Correspondence with the SEC