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Who

Thomas L. Davis

Director

Company insider

Files Form 4 as: Director, Geospace Technologies.

In numbers

Trades disclosed
40
Buys
2
Sells
2
Bought
$75K
Sold
$2.5M
Companies
1
Companies where not an officer
1
First trade
8 Feb 2006
Last trade
9 Feb 2026
Last filed
9 Feb 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
GEOS Geospace TechnologiesDirector · Life-science tools · last 9 Feb 20262 buys · 2 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
101Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
9 Feb 2026filed 9 Feb 2026GEOS Geospace TechnologiesLife-science toolsSEC FORM 4 Code A—3,500 at $0.00filing
9 Feb 2026filed 9 Feb 2026GEOS Geospace TechnologiesLife-science toolsSEC FORM 4 Code A—3,500 at $0.00filing
6 Feb 2025filed 7 Feb 2025GEOS Geospace TechnologiesLife-science toolsSEC FORM 4 Code A—7,200 at $0.00filing
7 Feb 2024filed 8 Feb 2024GEOS Geospace TechnologiesLife-science toolsSEC FORM 4 Code A—4,200 at $0.00filing
9 Feb 2023filed 10 Feb 2023GEOS Geospace TechnologiesLife-science toolsSEC FORM 4 Code A—9,000 at $0.00filing
2 Feb 2022filed 3 Feb 2022GEOS Geospace TechnologiesLife-science toolsSEC FORM 4 Code A—5,500 at $0.00filing
4 Feb 2021filed 5 Feb 2021GEOS Geospace TechnologiesLife-science toolsSEC FORM 4 Code A—5,000 at $0.00filing
13 May 2020filed 14 May 2020GEOS Geospace TechnologiesLife-science toolsSEC FORM 4 Bought$25K4,100 at $6.04filing
6 Feb 2020filed 7 Feb 2020GEOS Geospace TechnologiesLife-science toolsSEC FORM 4 Code A—2,200 at $0.00filing
6 Feb 2019filed 7 Feb 2019GEOS Geospace TechnologiesLife-science toolsSEC FORM 4 Code A—2,000 at $0.00filing
7 Feb 2018filed 8 Feb 2018GEOS Geospace TechnologiesLife-science toolsSEC FORM 4 Code A—2,400 at $0.00filing
9 Feb 2017filed 10 Feb 2017GEOS Geospace TechnologiesLife-science toolsSEC FORM 4 Code A—1,000 at $0.00filing
12 Feb 2015filed 13 Feb 2015GEOS Geospace TechnologiesLife-science toolsSEC FORM 4 Code A—500 at $0.00filing
6 Feb 2014filed 10 Feb 2014GEOS Geospace TechnologiesLife-science toolsSEC FORM 4 Code A—500 at $0.00filing
9 Feb 2011filed 9 Feb 2011GEOS Geospace Technologiesoption or derivative · Life-science toolsSEC FORM 4 Code M—3,150filing
9 Feb 2011filed 9 Feb 2011GEOS Geospace TechnologiesLife-science toolsSEC FORM 4 Code M$149K3,150 at $47.35filing
9 Feb 2011filed 9 Feb 2011GEOS Geospace TechnologiesLife-science toolsSEC FORM 4 Sold$201K1,950 at $103.00filing
9 Feb 2011filed 9 Feb 2011GEOS Geospace TechnologiesLife-science toolsSEC FORM 4 Sold$124K1,200 at $103.03filing
14 Feb 2008filed 14 Feb 2008GEOS Geospace TechnologiesLife-science toolsSEC FORM 4 Bought$50K1,013 at $49.27filing
14 Feb 2007filed 15 Feb 2007GEOS Geospace TechnologiesLife-science toolsSEC FORM 4 Sold$2.2M31,500 at $68.50filing

News

Comparing Geospace Technologies (NASDAQ:GEOS) and Mammoth Energy Services (NASDAQ:TUSK)GEOS · themarketsdaily.com · 9 Oct 2026

0 headlines in the last 90 days name Thomas L. Davis; 1 article from the last 14 days about the 1 company they traded most, at most three about any one of them.

Sectors

Health Care4

Buys in green, sells in red, by the company’s sector.

Related people

Margaret AshworthDirector · Director at Geospace Technologies, filing Form 4 there in the last year
Walter R. WheelerDirector · Director at Geospace Technologies, filing Form 4 there in the last year
Stephen C. JumperDirector · Director at Geospace Technologies, filing Form 4 there in the last year
Edgar R. Giesinger Jr.Director · Director at Geospace Technologies, filing Form 4 there in the last year
Richard F. MilesDirector · Director at Geospace Technologies, filing Form 4 there in the last year