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SCHEDULE Filed 2026-01-05 Event 2025-12-31 SEC 0001315863-26-000008 →

Wilks Farris DAWSON GEOPHYSICAL CO DWSN

Stake: 79.42% Shares: 24,658,746 CUSIP: 239360100 Class: Common Stock, par value $0.01 per share

Item 4 — Purpose of Transaction

Item 4 of the Schedule 13D is hereby amended and supplemented to include the following: On December 31, 2025, WBA adopted the Plan of Complete Liquidation and Dissolution of WBA (the "Dissolution Plan"), which Dissolution Plan was approved by Parent, as the sole stockholder of WBA (the "Dissolution"). In connection with the Dissolution, WBA and Parent entered into the Distribution Agreement by and between WBA and Parent, pursuant to which WBA agreed to distribute all of the 15,547,010 shares of Common Stock directly held by WBA to Parent in an in-kind distribution for no additional consideration, effective as of December 31, 2025 (the "Distribution"). Immediately following the Distribution, WBA beneficially owned 0 shares of Common Stock and Parent directly owned 24,658,746 shares of Common Stock. Except for the change in Parent's beneficial ownership from indirect to direct with respect to 15,547,010 shares of Common Stock distributed by WBA to Parent, Parent's aggregate beneficial ownership of Common Stock remained unchanged immediately following the Distribution. Further, as previously reported, the Reporting Persons intend to engage in discussions with the Issuer with respect to one or more transactions involving assets owned by the Reporting Persons and/or certain of their affiliates, which may include, among other things, asset contributions or sales, a business combination transaction or other similar transactions. There is no guarantee that the Reporting Persons (or their applicable affiliates) and the Issuer will enter into a definitive agreement regarding any such a transaction. As previously reported, the Reporting Persons intend to review their investment in the Issuer on a continuing basis. Depending on various factors including, without limitation, the Issuer's financial position and investment strategy, the price levels of the shares of Common Stock, conditions in the securities markets and general economic and industry conditions, the Reporting Persons intend to continue to consider, explore and/or develop plans and may in the future take such actions with respect to their investment in the Issuer as they deem appropriate including, without limitation, engaging in communications with the Issuer's management and the Board, engaging in discussions with shareholders of the Issuer and others about the Issuer and the Reporting Persons' investment, making proposals to the Issuer concerning strategic transactions, including business combinations, a sale of the Issuer as a whole or in parts or acquisitions or investments by the Issuer, changes to the capital allocation strategy, capitalization, ownership structure, Board structure (including Board composition), operations of the Issuer, purchasing additional shares of Common Stock, selling some or all of their shares of Common Stock, engaging in short selling of or any hedging or similar transaction with respect to the shares of Common Stock, or take any other actions with respect to their investment in the Issuer permitted by law, including any or all of the actions set forth in paragraphs (a) - (j) of Item 4 of Schedule 13D.

Cross-References

Insider Activity (last 365d)
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Issuer Cluster
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Filer Track Record
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Short Interest · settle 2026-03-31
DTC 1.00
116,183 shares short · +52.0% vs prior

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