Dawson Geophysical CEO surrenders 12,175 shares

The surrendered shares covered tax withholding tied to restricted stock vesting; the reported post-transaction holding was 139,675 shares.

Available on EDGAR 10/29/2026 - 04:02 PM EDT Accepted by SEC EDGAR 10/29/2026 - 04:01 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Dawson Geophysical Co. CEO and President William Anthony Clark surrendered 12,175 shares on October 27, 2026, at a reported price of $2.09 per share. The shares satisfied tax withholding obligations connected with vesting of restricted stock issued under the Amended and Restated Dawson Geophysical Company 2006 Stock and Performance Incentive Plan. Clark held 139,675 shares following the transaction.

Insider Trade Summary

Tax Withholding: 12,175 shares

Tax Withholding 1 txn

Insider Clark William Anthony

Role CEO & President

Type	Security	Shares	Price	Value
Tax Withholding	Dawson Geophysical Company-Common Stock $0.01 par value F1	12,175	$2.09	$25K

Holdings After Transaction: Dawson Geophysical Company-Common Stock $0.01 par value — 139,675 shares (Direct)

Holdings Before and After: Dawson Geophysical Company-Common Stock $0.01 par value, 151,850 to 139,675 shares (Direct)

Footnotes (1)

1. F1. Represents the surrender of shares of Common Stock to satisfy tax withholding obligations in connection with the vesting of restricted stock issued to the Reporting person under the Amended and Restated Dawson Geophysical Company 2006 Stock and Performance Incentive Plan.

Key Figures

Shares surrendered: 12,175 shares Reported price per share: $2.09 per share Shares following transaction: 139,675 shares

3 metrics

Shares surrendered 12,175 shares October 27, 2026; for tax withholding obligations

Reported price per share $2.09 per share October 27, 2026 transaction

Shares following transaction 139,675 shares Direct holdings reported following the transaction

Key Terms

tax withholding obligations, vesting, restricted stock

3 terms

tax withholding obligations financial

"surrender of shares of Common Stock to satisfy tax withholding obligations"

vesting financial

"in connection with the vesting of restricted stock"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

restricted stock financial

"vesting of restricted stock issued to the Reporting person"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many DWSN shares did CEO William Anthony Clark surrender?

William Anthony Clark surrendered 12,175 shares on October 27, 2026, at a reported price of $2.09 per share to satisfy tax withholding obligations connected with restricted stock vesting. He held 139,675 shares following the transaction.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Clark William Anthony

(Last) (First) (Middle)

508 W. WALL STREET, SUITE 800

(Street)

MIDLAND TEXAS 79701

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
DAWSON GEOPHYSICAL CO [ DWSN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CEO & President

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/27/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Dawson Geophysical Company-Common Stock $0.01 par value	10/27/2026		F		12,175(1)	D	$2.09	139,675	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents the surrender of shares of Common Stock to satisfy tax withholding obligations in connection with the vesting of restricted stock issued to the Reporting person under the Amended and Restated Dawson Geophysical Company 2006 Stock and Performance Incentive Plan.

	/s/ William Anthony Clark	10/29/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)