0001104659-15-009481.txt : 20150212 0001104659-15-009481.hdr.sgml : 20150212 20150212160900 ACCESSION NUMBER: 0001104659-15-009481 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20150211 FILED AS OF DATE: 20150212 DATE AS OF CHANGE: 20150212 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: DAWSON OPERATING CO CENTRAL INDEX KEY: 0000351231 STANDARD INDUSTRIAL CLASSIFICATION: OIL AND GAS FIELD EXPLORATION SERVICES [1382] IRS NUMBER: 750970548 STATE OF INCORPORATION: TX FISCAL YEAR END: 0930 BUSINESS ADDRESS: STREET 1: 508 WEST WALL STREET 2: SUITE 800 CITY: MIDLAND STATE: TX ZIP: 79701 BUSINESS PHONE: 4326843000 MAIL ADDRESS: STREET 1: 508 WEST WALL STREET 2: SUITE 800 CITY: MIDLAND STATE: TX ZIP: 79701 FORMER COMPANY: FORMER CONFORMED NAME: DAWSON GEOPHYSICAL CO DATE OF NAME CHANGE: 19920703 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Vander Ploeg Mark A CENTRAL INDEX KEY: 0001604461 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-34404 FILM NUMBER: 15606219 MAIL ADDRESS: STREET 1: 1360 ELDER AVENUE CITY: MENLO PARK STATE: CA ZIP: 94025 4 1 a4.xml 4 X0306 4 2015-02-11 1 0000351231 DAWSON OPERATING CO DWSN 0001604461 Vander Ploeg Mark A 508 W. WALL, SUITE 800 MIDLAND TX 79701 1 0 0 0 Common Stock $0.33 1/3 par value 2015-02-11 4 D 0 6321 D 0 D Disposed of pursuant to the merger (the "Merger") of Dawson Operating Company, previously known as Dawson Geophysical Company ("Old Dawson") with a subsidiary of Dawson Geophysical Company, previously known as TGC Industries, Inc. ("New Dawson") whereby each share of Old Dawson common stock, par value $0.33 1/3 per share, was converted into 1.760 shares of New Dawson common stock, par value $0.01 per share, having a market value based on the closing price of one share of New Dawson common stock on NASDAQ on the effective date of the Merger of $5.85 (as adjusted to reflect New Dawson's 1-for-3 reverse stock split, which occurred immediately prior to the Merger) per share and a cash payment being made for any fractional shares. /s/ Mark A. Vander Ploeg 2015-02-12