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Who

Donald W. Slager

Director

Company insider

Files Form 4 as: Director, WillScot Holdings; Director, Eastman Chemical; Director, Martin Marietta Materials; CEO and Director, Republic Services; Director, UTi WORLDWIDE; President, Allied Waste Industries.

In numbers

Trades disclosed
428
Buys
0
Sells
31
Bought
$0
Sold
$107.2M
Companies
6
Companies where not an officer
5
First trade
29 Dec 2005
Last trade
7 Oct 2026
Last filed
9 Oct 2026

Companies traded

Where they are an officer
RSG Republic ServicesDirector, Officer · Waste & Environmental · last 15 Apr 20210 buys · 26 sells
Everywhere else they filed: board seats, 10% stakes, other companies
EMN Eastman ChemicalDirector · Chemicals · last 7 Oct 20260 buys · 0 sells
WSC WillScot HoldingsDirector · Business Services · last 7 Oct 20260 buys · 0 sells
MLM Martin Marietta MaterialsDirector · Construction Materials · last 14 May 20260 buys · 0 sells
UTi WORLDWIDEDirector · last 22 Jan 20160 buys · 0 sells
Allied Waste Industrieslast 5 Dec 20080 buys · 5 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
7 Oct 2026filed 9 Oct 2026WSC WillScot HoldingsBusiness ServicesSEC FORM 4 Code A—6,397 at $0.00filing
7 Oct 2026filed 9 Oct 2026EMN Eastman Chemicaloption or derivative · ChemicalsSEC FORM 4 Code A—480 at $0.00filing
14 May 2026filed 18 May 2026MLM Martin Marietta MaterialsConstruction MaterialsSEC FORM 4 Code A—313 at $0.00filing
14 May 2026filed 18 May 2026MLM Martin Marietta MaterialsConstruction MaterialsSEC FORM 4 Code A—313 at $0.00filing
7 May 2026filed 11 May 2026EMN Eastman ChemicalChemicalsSEC FORM 4 Code A—1,628 at $0.00filing
7 May 2026filed 11 May 2026EMN Eastman ChemicalChemicalsSEC FORM 4 Code A—1,628 at $0.00filing
8 Apr 2026filed 10 Apr 2026EMN Eastman Chemicaloption or derivative · ChemicalsSEC FORM 4 Code A—408 at $0.00filing
8 Apr 2026filed 10 Apr 2026EMN Eastman Chemicaloption or derivative · ChemicalsSEC FORM 4 Code A—408 at $0.00filing
7 Oct 2025filed 9 Oct 2025EMN Eastman Chemicaloption or derivative · ChemicalsSEC FORM 4 Code A—487 at $0.00filing
15 May 2025filed 16 May 2025MLM Martin Marietta MaterialsConstruction MaterialsSEC FORM 4 Code A$170K308 at $552.86filing
1 May 2025filed 5 May 2025EMN Eastman ChemicalChemicalsSEC FORM 4 Code A—1,575 at $0.00filing
7 Apr 2025filed 9 Apr 2025EMN Eastman Chemicaloption or derivative · ChemicalsSEC FORM 4 Code A—412 at $0.00filing
7 Oct 2024filed 9 Oct 2024EMN Eastman Chemicaloption or derivative · ChemicalsSEC FORM 4 Code A—277filing
9 Jul 2024filed 11 Jul 2024EMN Eastman Chemicaloption or derivative · ChemicalsSEC FORM 4 Code A—61 at $0.00filing
16 May 2024filed 17 May 2024MLM Martin Marietta MaterialsConstruction MaterialsSEC FORM 4 Code A$170K293 at $581.69filing
11 May 2023filed 12 May 2023MLM Martin Marietta MaterialsConstruction MaterialsSEC FORM 4 Code A$145K362 at $400.57filing
12 May 2022filed 16 May 2022MLM Martin Marietta MaterialsConstruction MaterialsSEC FORM 4 Code A—443 at $0.00filing
13 May 2021filed 17 May 2021MLM Martin Marietta MaterialsConstruction MaterialsSEC FORM 4 Code A—388 at $0.00filing
15 Apr 2021filed 19 Apr 2021RSG Republic Servicesoption or derivative · Waste & EnvironmentalSEC FORM 4 Code A$36K348 at $104.21filing
23 Feb 2021filed 25 Feb 2021RSG Republic ServicesWaste & EnvironmentalSEC FORM 4 Code A$4.1M45,887 at $88.96filing

Sectors

Industrials26
Not placed5

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

Related people

CASCADE INVESTMENT, L.L.C.10% owner · 10% owner at Republic Services, filing Form 4 there in the last year
Gregg BrummerEVP, COO · EVP, COO at Republic Services, filing Form 4 there in the last year
Amanda HodgesEVP, Chief Commercial Officer · EVP, Chief Commercial Officer at Republic Services, filing Form 4 there in the last year
Margaret ReynoldsDirector · Director at Republic Services, filing Form 4 there in the last year
Manuel KadreDirector · Director at Republic Services, filing Form 4 there in the last year
Josh GottheimerRepresentative, NJ-05 · Also traded RSG in the last 90 days