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Who

William N. Thorndike Jr.

Director

Company insider

Files Form 4 as: Director, CNX Resources; Director, Perimeter Solutions, SA; Director, LeMaitre Vascular.

In numbers

Trades disclosed
94
Buys
4
Sells
16
Bought
$2.2M
Sold
$33.3M
Companies
3
Companies where not an officer
3
First trade
1 Sep 2008
Last trade
7 May 2026
Last filed
11 May 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
CNX CNX ResourcesDirector · Oil & Gas E&P · last 7 May 20264 buys · 1 sell
PRM Perimeter Solutions, SADirector · Chemicals · last 11 Mar 20260 buys · 6 sells
LMAT LeMaitre VascularDirector · Medical Devices · last 24 Jul 20130 buys · 9 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
60Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
7 May 2026filed 11 May 2026CNX CNX ResourcesOil & Gas E&PSEC FORM 4 Code A—8,770 at $0.00filing
7 May 2026filed 11 May 2026CNX CNX ResourcesOil & Gas E&PSEC FORM 4 Code A—8,770 at $0.00filing
4 May 2026filed 6 May 2026CNX CNX ResourcesOil & Gas E&PSEC FORM 4 Code M$1.1M83,097 at $13.19filing
4 May 2026filed 6 May 2026CNX CNX ResourcesOil & Gas E&PSEC FORM 4 Sold$1.1M28,800 at $38.25filing
4 May 2026filed 6 May 2026CNX CNX Resourcesoption or derivative · Oil & Gas E&PSEC FORM 4 Code M—83,097 at $0.00filing
4 May 2026filed 6 May 2026CNX CNX Resourcesoption or derivative · Oil & Gas E&PSEC FORM 4 Code M—83,097 at $0.00filing
4 May 2026filed 6 May 2026CNX CNX ResourcesOil & Gas E&PSEC FORM 4 Code M$1.1M83,097 at $13.19filing
4 May 2026filed 6 May 2026CNX CNX ResourcesOil & Gas E&PSEC FORM 4 Sold$1.1M28,800 at $38.25filing
11 Mar 2026filed 11 Mar 2026PRM Perimeter Solutions, SAChemicalsSEC FORM 4 Sold$2.3M100,000 at $23.18filing
11 Mar 2026filed 11 Mar 2026PRM Perimeter Solutions, SAChemicalsSEC FORM 4 Sold$2.3M100,000 at $23.18filing
10 Mar 2026filed 11 Mar 2026PRM Perimeter Solutions, SAChemicalsSEC FORM 4 Sold$2.4M100,000 at $23.63filing
10 Mar 2026filed 11 Mar 2026PRM Perimeter Solutions, SAChemicalsSEC FORM 4 Sold$2.4M100,000 at $23.63filing
9 Mar 2026filed 11 Mar 2026PRM Perimeter Solutions, SAChemicalsSEC FORM 4 Sold$2.1M90,043 at $23.18filing
9 Mar 2026filed 11 Mar 2026PRM Perimeter Solutions, SAChemicalsSEC FORM 4 Sold$834K34,957 at $23.85filing
9 Mar 2026filed 11 Mar 2026PRM Perimeter Solutions, SAChemicalsSEC FORM 4 Sold$2.1M90,043 at $23.18filing
9 Mar 2026filed 11 Mar 2026PRM Perimeter Solutions, SAChemicalsSEC FORM 4 Sold$834K34,957 at $23.85filing
6 Mar 2026filed 6 Mar 2026PRM Perimeter Solutions, SAChemicalsSEC FORM 4 Sold$2.4M100,000 at $23.63filing
6 Mar 2026filed 6 Mar 2026PRM Perimeter Solutions, SAChemicalsSEC FORM 4 Sold$2.4M100,000 at $23.63filing
5 Mar 2026filed 6 Mar 2026PRM Perimeter Solutions, SAChemicalsSEC FORM 4 Sold$2.4M100,000 at $24.06filing
5 Mar 2026filed 6 Mar 2026PRM Perimeter Solutions, SAChemicalsSEC FORM 4 Sold$2.4M100,000 at $24.06filing

News

CNX Resources (NYSE:CNX) Stock Bumped Up to "Hold" by ScotiabankCNX · tickerreport.com · 17 Oct 2026Truist Financial Has Lowered Expectations for CNX Resources (NYSE:CNX) Stock PriceCNX · tickerreport.com · 16 Oct 2026

0 headlines in the last 90 days name William N. Thorndike Jr.; 2 articles from the last 14 days about the 2 companies they traded most, at most three about any one of them.

Sectors

Health Care9
Materials6
Energy5

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

Related people

Maureen Lally-GreenDirector · Director at CNX Resources, filing Form 4 there in the last year
Nicholas J. DeiuliisDirector · Director at CNX Resources, filing Form 4 there in the last year
Alan K. ShepardPresident & CEO · President & CEO at CNX Resources, filing Form 4 there in the last year
Navneet BehlChief Operating Officer · Chief Operating Officer at CNX Resources, filing Form 4 there in the last year
Ian R. McGuireDirector · Director at CNX Resources, filing Form 4 there in the last year
Donald J. TrumpPresident · Also traded LMAT in the last 90 days