CLEAN HARBORS INC (CLH)

Data as of Aug 18, 2026, from SEC Form 4 filings.

Net insider selling (90d)Watch CLH

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Latest CLH insider trades

Eric W. Gerstenberg - Officer
Open-market sale$803K
Aug 14, 2026
Andrea Robertson - Director
Open-market sale$248K
Aug 3, 2026

About CLEAN HARBORS INC (CLH)

CLEAN HARBORS INC files with the SEC under CIK 0000822818 and is classified as hazardous waste management. It is grouped with Utilities companies on this site.

Sector: Utilities

SEC filings for CLH on EDGAR

CLH Form 4 activity by transaction type, last 90 days

Form 4 transaction type	Transactions	Shares	Total value
Open-market sale	2	3,289	$1.05M
Tax withholding / forfeiture	5	5,065

Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.

CLH insider transactions (Form 4)

91 Form 4 filings on record, the earliest from Oct 16, 2024, newest first. Filing history page 2 of 3.

Date	Insider	Transaction	Security	Shares	Price	Value
Mar 18, 2026	Marcy L. Reed	Open-market sale	Common Stock	836	$287.94	$241K
Mar 17, 2026	Brian P. Weber - Officer	Open-market sale	Common Stock	4,683	$293.39	$1.37M
Mar 13, 2026	Brian P. Weber - Officer	Tax withholding / forfeiture	Common Stock	960^{footnote F1}	$288.93	$277K
Mar 13, 2026	Brian P. Weber - Officer	Derivative	Common Stock	1,869^{footnote F2}	$0.00	-
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3. Footnote F2 (shares): Shares of restricted stock forfeited due to the Company not achieving performance targets under its Long Term Equity Incentive Program.
Mar 13, 2026	Rebecca Underwood - Officer	Tax withholding / forfeiture	Common Stock	125^{footnote F1}	$288.93	$36K
Mar 13, 2026	Rebecca Underwood - Officer	Derivative	Common Stock	1,401^{footnote F2}	$0.00	-
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3. Footnote F2 (shares): Shares of restricted stock forfeited due to the Company not achieving performance targets under its Long Term Equity Incentive Program.
Mar 13, 2026	Sharon M. Gabriel - Officer	Tax withholding / forfeiture	Common Stock	727^{footnote F1}	$288.93	$210K
Mar 13, 2026	Sharon M. Gabriel - Officer	Derivative	Common Stock	1,401^{footnote F2}	$0.00	-
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3. Footnote F2 (shares): Shares of restricted stock forfeited due to the Company not achieving performance targets under its Long Term Equity Incentive Program.
Mar 13, 2026	Eric W. Gerstenberg - Officer	Tax withholding / forfeiture	Common Stock	977^{footnote F1}	$288.93	$282K
Mar 13, 2026	Eric W. Gerstenberg - Officer	Derivative	Common Stock	2,166^{footnote F2}	$0.00	-
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3. Footnote F2 (shares): Shares of restricted stock forfeited due to the Company not achieving performance targets under its Long Term Equity Incentive Program.
Mar 13, 2026	Robert W. Harrison - Officer	Tax withholding / forfeiture	Common Stock	18^{footnote F1}	$288.93	$5K
Mar 13, 2026	Robert W. Harrison - Officer	Derivative	Common Stock	368^{footnote F2}	$0.00	-
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3. Footnote F2 (shares): Shares of restricted stock forfeited due to the Company not achieving performance targets under its Long Term Equity Incentive Program.
Mar 13, 2026	Charles H. Geer II - Officer	Derivative	Common Stock	139^{footnote F1}	$0.00	-
Footnote F1 (shares): Shares of restricted stock forfeited due to the Company not achieving performance targets under its Long Term Equity Incentive Program.
Mar 13, 2026	Eric J. Dugas - Officer	Tax withholding / forfeiture	Common Stock	630^{footnote F1}	$288.93	$182K
Mar 13, 2026	Eric J. Dugas - Officer	Derivative	Common Stock	1,324^{footnote F2}	$0.00	-
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3. Footnote F2 (shares): Shares of restricted stock forfeited due to the Company not achieving performance targets under its Long Term Equity Incentive Program.
Mar 13, 2026	George L. Curtis - Officer	Tax withholding / forfeiture	Common Stock	350^{footnote F1}	$288.93	$101K
Mar 13, 2026	George L. Curtis - Officer	Derivative	Common Stock	1,028^{footnote F2}	$0.00	-
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3. Footnote F2 (shares): Shares of restricted stock forfeited due to the Company not achieving performance targets under its Long Term Equity Incentive Program.
Mar 13, 2026	Alan S. McKim - Officer	Tax withholding / forfeiture	Common Stock	1,265^{footnote F1}	$288.93	$365K
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
Mar 13, 2026	Michael Louis Battles - Officer	Tax withholding / forfeiture	Common Stock	1,148^{footnote F1}	$288.93	$332K
Mar 13, 2026	Michael Louis Battles - Officer	Derivative	Common Stock	2,166^{footnote F2}	$0.00	-
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3. Footnote F2 (shares): Shares of restricted stock forfeited due to the Company not achieving performance targets under its Long Term Equity Incentive Program.
Mar 4, 2026	Alan S. McKim - Officer	Open-market sale	Common Stock	100,000	$292.65	$29.26M
Feb 23, 2026	Eric W. Gerstenberg - Officer	Open-market sale	Common Stock	2,500	$279.86	$700K
Feb 19, 2026	Alan S. McKim - Officer	Open-market sale	Common Stock	100,000	$281.14	$28.11M
Feb 19, 2026	Alan S. McKim - Officer	Gift	Common Stock	10,000^{footnote F1}	$0.00	-
Footnote F1 (shares): Charitable Gift.
Feb 20, 2026	Sharon M. Gabriel - Officer	Open-market sale	Common Stock	3,540	$282.07	$999K
Feb 20, 2026	Eric J. Dugas - Officer	Open-market sale	Common Stock	2,788	$281.31	$784K
Feb 19, 2026	John R. Welch	Open-market sale	Common Stock	750	$273.07	$205K
Feb 2, 2026	Michael Louis Battles - Officer	Tax withholding / forfeiture	Common Stock	5,205^{footnote F1}	$259.91	$1.35M
Feb 1, 2026	Michael Louis Battles - Officer	Grant or award	Common Stock	10,290^{footnote F2}	$0.00	-
Feb 1, 2026	Michael Louis Battles - Officer	Grant or award	Common Stock	10,690^{footnote F3}	$0.00	-
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3. Footnote F2 (shares): Performance-Based Restricted Stock Award that will vest 50% on 3/15/2028 and 50% on 3/15/2029, depending on achievement of certain goals during the performance period 1/1/2027 through 12/31/2027. Footnote F3 (shares): Restricted Stock Award vesting as to 25% on February 1, 2027; 25% on February 1, 2028; 25% on February 1, 2029; and 25% on February 1, 2030.
Feb 2, 2026	Brian P. Weber - Officer	Tax withholding / forfeiture	Common Stock	1,394^{footnote F1}	$259.91	$362K
Feb 1, 2026	Brian P. Weber - Officer	Grant or award	Common Stock	3,166^{footnote F2}	$0.00	-
Feb 1, 2026	Brian P. Weber - Officer	Grant or award	Common Stock	1,056^{footnote F3}	$0.00	-
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3. Footnote F2 (shares): Performance-Based Restricted Stock Award that will vest 50% on 3/15/2028 and 50% on 3/15/2029, depending on achievement of certain goals during the performance period 1/1/2027 through 12/31/2027 Footnote F3 (shares): Restricted Stock Award vesting as to 25% on February 1, 2027; 25% on February 1, 2028; 25% on February 1, 2029; and 25% on February 1, 2030.
Feb 2, 2026	Rebecca Underwood - Officer	Tax withholding / forfeiture	Common Stock	425^{footnote F1}	$259.91	$110K
Feb 1, 2026	Rebecca Underwood - Officer	Grant or award	Common Stock	2,513^{footnote F2}	$0.00	-
Feb 1, 2026	Rebecca Underwood - Officer	Grant or award	Common Stock	838^{footnote F3}	$0.00	-
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3. Footnote F2 (shares): Performance-Based Restricted Stock Award that will vest 50% on 3/15/2028 and 50% on 3/15/2029, depending on achievement of certain goals during the performance period 1/1/2027 through 12/31/2027 Footnote F3 (shares): Restricted Stock Award vesting as to 25% on February 1, 2027; 25% on February 1, 2028; 25% on February 1, 2029; and 25% on February 1, 2030.
Feb 2, 2026	Robert W. Harrison - Officer	Tax withholding / forfeiture	Common Stock	184^{footnote F1}	$259.91	$48K
Feb 1, 2026	Robert W. Harrison - Officer	Grant or award	Common Stock	1,003^{footnote F2}	$0.00	-
Feb 1, 2026	Robert W. Harrison - Officer	Grant or award	Common Stock	430^{footnote F3}	$0.00	-
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3. Footnote F2 (shares): Performance-Based Restricted Stock Award that will vest 50% on 3/15/2028 and 50% on 3/15/2029, depending on achievement of certain goals during the performance period 1/1/2027 through 12/31/2027 Footnote F3 (shares): Restricted Stock Award vesting as to 25% on February 1, 2027; 25% on February 1, 2028; 25% on February 1, 2029; and 25% on February 1, 2030.
Feb 2, 2026	Eric W. Gerstenberg - Officer	Tax withholding / forfeiture	Common Stock	4,934^{footnote F1}	$259.91	$1.28M
Feb 1, 2026	Eric W. Gerstenberg - Officer	Grant or award	Common Stock	10,290^{footnote F2}	$0.00	-
Feb 1, 2026	Eric W. Gerstenberg - Officer	Grant or award	Common Stock	10,690^{footnote F3}	$0.00	-
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3. Footnote F2 (shares): Performance-Based Restricted Stock Award that will vest 50% on 3/15/2028 and 50% on 3/15/2029, depending on achievement of certain goals during the performance period 1/1/2027 through 12/31/2027 Footnote F3 (shares): Restricted Stock Award vesting as to 25% on February 1, 2027; 25% on February 1, 2028; 25% on February 1, 2029; and 25% on February 1, 2030.
Feb 2, 2026	Charles H. Geer II - Officer	Tax withholding / forfeiture	Common Stock	197^{footnote F1}	$259.91	$51K
Feb 1, 2026	Charles H. Geer II - Officer	Grant or award	Common Stock	1,843^{footnote F2}	$0.00	-
Feb 1, 2026	Charles H. Geer II - Officer	Grant or award	Common Stock	503^{footnote F3}	$0.00	-
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3. Footnote F2 (shares): Performance-Based Restricted Stock Award that will vest 50% on 3/15/2028 and 50% on 3/15/2029, depending on achievement of certain goals during the performance period 1/1/2027 through 12/31/2027 Footnote F3 (shares): Restricted Stock Award vesting as to 25% on February 1, 2027; 25% on February 1, 2028; 25% on February 1, 2029; and 25% on February 1, 2030.
Feb 2, 2026	Sharon M. Gabriel - Officer	Tax withholding / forfeiture	Common Stock	508^{footnote F1}	$259.91	$132K
Feb 1, 2026	Sharon M. Gabriel - Officer	Grant or award	Common Stock	2,073^{footnote F2}	$0.00	-
Feb 1, 2026	Sharon M. Gabriel - Officer	Grant or award	Common Stock	566^{footnote F3}	$0.00	-
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3. Footnote F2 (shares): Performance-Based Restricted Stock Award that will vest 50% on 3/15/2028 and 50% on 3/15/2029, depending on achievement of certain goals during the performance period 1/1/2027 through 12/31/2027 Footnote F3 (shares): Restricted Stock Award vesting as to 25% on February 1, 2027; 25% on February 1, 2028; 25% on February 1, 2029; and 25% on February 1, 2030.
Feb 2, 2026	Eric J. Dugas - Officer	Tax withholding / forfeiture	Common Stock	567^{footnote F1}	$259.91	$147K
Feb 1, 2026	Eric J. Dugas - Officer	Grant or award	Common Stock	3,066^{footnote F2}	$0.00	-
Feb 1, 2026	Eric J. Dugas - Officer	Grant or award	Common Stock	1,022^{footnote F3}	$0.00	-
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3. Footnote F2 (shares): Performance-Based Restricted Stock Award that will vest 50% on 3/15/2028 and 50% on 3/15/2029, depending on achievement of certain goals during the performance period 1/1/2027 through 12/31/2027 Footnote F3 (shares): Restricted Stock Award vesting as to 25% on February 1, 2027; 25% on February 1, 2028; 25% on February 1, 2029; and 25% on February 1, 2030.
Feb 2, 2026	Jeroen Diderich - Officer	Tax withholding / forfeiture	Common Stock	105^{footnote F1}	$259.91	$27K
Feb 1, 2026	Jeroen Diderich - Officer	Grant or award	Common Stock	3,141^{footnote F2}	$0.00	-
Feb 1, 2026	Jeroen Diderich - Officer	Grant or award	Common Stock	1,047^{footnote F3}	$0.00	-
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3. Footnote F2 (shares): Performance-Based Restricted Stock Award that will vest 50% on 3/15/2028 and 50% on 3/15/2029, depending on achievement of certain goals during the performance period 1/1/2027 through 12/31/2027 Footnote F3 (shares): Restricted Stock Award vesting as to 25% on February 1, 2027; 25% on February 1, 2028; 25% on February 1, 2029; and 25% on February 1, 2030.
Feb 2, 2026	George L. Curtis - Officer	Tax withholding / forfeiture	Common Stock	249^{footnote F1}	$259.91	$65K
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
Dec 1, 2025	Robert W. Harrison - Officer	Tax withholding / forfeiture	Common Stock	122^{footnote F1}	$228.54	$28K
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
Nov 13, 2025	Lauren States	Gift	Common Stock	245^{footnote F1}	$0.00	-
Footnote F1 (shares): Charitable gift
Nov 1, 2025	Charles H. Geer II - Officer	Tax withholding / forfeiture	Common Stock	294^{footnote F1}	$210.51	$62K
Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.

Recent CLH Form 8-K filings

Read CLH company news

Oct 5, 2026Item 1.01, 2.03, 8.01, 9.01

Read the filing on SEC EDGAR

Sep 18, 2026Item 8.01, 9.01

Read the filing on SEC EDGAR

Aug 12, 2026Item 8.01, 9.01

Read the filing on SEC EDGAR

Jul 29, 2026Item 2.02, 9.01

Recent CLH Form 144 notices of proposed sale

An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.

Filed	Filer	Relationship	Shares	Market value	Notice
Aug 14, 2026	GERSTENBERG ERIC W	Officer	2,500	$805K	View on EDGAR
Aug 3, 2026	ANDREA ROBERTSON	Director	789	$248K

Congress trades in CLH

All congress trades

Stock trades in CLH disclosed by members of the U.S. House in the last 12 months, newest first. Values are the ranges as filed.

Member	Type	Traded	Disclosed	Value range	Owner	Days to disclose	Filing
April McClain DelaneyDemocrat, MD-06	Sale

CLH insider trading FAQ

What is the latest insider trade for CLH?

CLEAN HARBORS INC (CLH) had 7 insider filings in the last 90 days, with the most recent on 2026-08-18. The full record for CLH runs to 91 Form 4 filings, the earliest from 2024-10-16. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.

How many insiders are buying CLH stock?

No insider purchases of CLH were filed in the last 90 days. 2 purchases are on record for this company.

How many insiders are selling CLH stock?

2 insider sales of CLH were filed in the last 90 days, totaling $1.05M.

Where can I see CLH SEC filings (Form 4, 10-K, 10-Q, 8-K)?

This page collects CLH Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.

More Utilities companies with insider activity

Recent insider filings

The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.

Aug 18, 2026 - Eric W. Gerstenberg view on EDGAR
Aug 14, 2026 - Eric W. Gerstenberg view on EDGAR
Aug 14, 2026 - Eric J. Dugas view on EDGAR
Aug 12, 2026 - Michael Louis Battles view on EDGAR
Aug 11, 2026 - George L. Curtis view on EDGAR
Aug 3, 2026 - Andrea Robertson view on EDGAR
Jul 20, 2026 - Alan S. McKim view on EDGAR
Jul 6, 2026 - Sharon M. Gabriel view on EDGAR
Jul 6, 2026 - Brian P. Weber view on EDGAR

Related companies with recent insider activity

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Learn more

Insider selling: signal or noise?: Why most insider sales are routine, and the few patterns worth a second look.
Form 144 vs Form 4: A Form 144 announces a planned sale; the Form 4 reports it after it happens.
Insider activity in Utilities: Where CLH's peers are being bought and sold.
Every recent Form 4: The market-wide feed, updated as filings arrive from SEC EDGAR.

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Form 4 transaction type

Transactions

Total value

Open-market sale

3,289

$1.05M

Tax withholding / forfeiture

5,065

Date

Insider

Transaction

Security

Price

Value

Mar 18, 2026

Marcy L. Reed

Open-market sale

Common Stock

836

$287.94

$241K

Mar 17, 2026

Brian P. Weber - Officer

Open-market sale

Common Stock

4,683

$293.39

$1.37M

Mar 13, 2026

Brian P. Weber - Officer

Tax withholding / forfeiture

Common Stock

960^{footnote F1}

$288.93

$277K

Mar 13, 2026

Brian P. Weber - Officer

Derivative

Common Stock

1,869^{footnote F2}

$0.00

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
Footnote F2 (shares): Shares of restricted stock forfeited due to the Company not achieving performance targets under its Long Term Equity Incentive Program.

Mar 13, 2026

Rebecca Underwood - Officer

Tax withholding / forfeiture

Common Stock

125^{footnote F1}

$288.93

$36K

Mar 13, 2026

Rebecca Underwood - Officer

Derivative

Common Stock

1,401^{footnote F2}

$0.00

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
Footnote F2 (shares): Shares of restricted stock forfeited due to the Company not achieving performance targets under its Long Term Equity Incentive Program.

Mar 13, 2026

Sharon M. Gabriel - Officer

Tax withholding / forfeiture

Common Stock

727^{footnote F1}

$288.93

$210K

Mar 13, 2026

Sharon M. Gabriel - Officer

Derivative

Common Stock

1,401^{footnote F2}

$0.00

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
Footnote F2 (shares): Shares of restricted stock forfeited due to the Company not achieving performance targets under its Long Term Equity Incentive Program.

Mar 13, 2026

Eric W. Gerstenberg - Officer

Tax withholding / forfeiture

Common Stock

977^{footnote F1}

$288.93

$282K

Mar 13, 2026

Eric W. Gerstenberg - Officer

Derivative

Common Stock

2,166^{footnote F2}

$0.00

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
Footnote F2 (shares): Shares of restricted stock forfeited due to the Company not achieving performance targets under its Long Term Equity Incentive Program.

Mar 13, 2026

Robert W. Harrison - Officer

Tax withholding / forfeiture

Common Stock

18^{footnote F1}

$288.93

$5K

Mar 13, 2026

Robert W. Harrison - Officer

Derivative

Common Stock

368^{footnote F2}

$0.00

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
Footnote F2 (shares): Shares of restricted stock forfeited due to the Company not achieving performance targets under its Long Term Equity Incentive Program.

Mar 13, 2026

Charles H. Geer II - Officer

Derivative

Common Stock

139^{footnote F1}

$0.00

Footnote F1 (shares): Shares of restricted stock forfeited due to the Company not achieving performance targets under its Long Term Equity Incentive Program.

Mar 13, 2026

Eric J. Dugas - Officer

Tax withholding / forfeiture

Common Stock

630^{footnote F1}

$288.93

$182K

Mar 13, 2026

Eric J. Dugas - Officer

Derivative

Common Stock

1,324^{footnote F2}

$0.00

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
Footnote F2 (shares): Shares of restricted stock forfeited due to the Company not achieving performance targets under its Long Term Equity Incentive Program.

Mar 13, 2026

George L. Curtis - Officer

Tax withholding / forfeiture

Common Stock

350^{footnote F1}

$288.93

$101K

Mar 13, 2026

George L. Curtis - Officer

Derivative

Common Stock

1,028^{footnote F2}

$0.00

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
Footnote F2 (shares): Shares of restricted stock forfeited due to the Company not achieving performance targets under its Long Term Equity Incentive Program.

Mar 13, 2026

Alan S. McKim - Officer

Tax withholding / forfeiture

Common Stock

1,265^{footnote F1}

$288.93

$365K

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.

Mar 13, 2026

Michael Louis Battles - Officer

Tax withholding / forfeiture

Common Stock

1,148^{footnote F1}

$288.93

$332K

Mar 13, 2026

Michael Louis Battles - Officer

Derivative

Common Stock

2,166^{footnote F2}

$0.00

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
Footnote F2 (shares): Shares of restricted stock forfeited due to the Company not achieving performance targets under its Long Term Equity Incentive Program.

Mar 4, 2026

Alan S. McKim - Officer

Open-market sale

Common Stock

100,000

$292.65

$29.26M

Feb 23, 2026

Eric W. Gerstenberg - Officer

Open-market sale

Common Stock

2,500

$279.86

$700K

Feb 19, 2026

Alan S. McKim - Officer

Open-market sale

Common Stock

100,000

$281.14

$28.11M

Feb 19, 2026

Alan S. McKim - Officer

Gift

Common Stock

10,000^{footnote F1}

$0.00

Footnote F1 (shares): Charitable Gift.

Feb 20, 2026

Sharon M. Gabriel - Officer

Open-market sale

Common Stock

3,540

$282.07

$999K

Feb 20, 2026

Eric J. Dugas - Officer

Open-market sale

Common Stock

2,788

$281.31

$784K

Feb 19, 2026

John R. Welch

Open-market sale

Common Stock

750

$273.07

$205K

Feb 2, 2026

Michael Louis Battles - Officer

Tax withholding / forfeiture

Common Stock

5,205^{footnote F1}

$259.91

$1.35M

Feb 1, 2026

Michael Louis Battles - Officer

Grant or award

Common Stock

10,290^{footnote F2}

$0.00

Feb 1, 2026

Michael Louis Battles - Officer

Grant or award

Common Stock

10,690^{footnote F3}

$0.00

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
Footnote F2 (shares): Performance-Based Restricted Stock Award that will vest 50% on 3/15/2028 and 50% on 3/15/2029, depending on achievement of certain goals during the performance period 1/1/2027 through 12/31/2027.
Footnote F3 (shares): Restricted Stock Award vesting as to 25% on February 1, 2027; 25% on February 1, 2028; 25% on February 1, 2029; and 25% on February 1, 2030.

Feb 2, 2026

Brian P. Weber - Officer

Tax withholding / forfeiture

Common Stock

1,394^{footnote F1}

$259.91

$362K

Feb 1, 2026

Brian P. Weber - Officer

Grant or award

Common Stock

3,166^{footnote F2}

$0.00

Feb 1, 2026

Brian P. Weber - Officer

Grant or award

Common Stock

1,056^{footnote F3}

$0.00

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
Footnote F2 (shares): Performance-Based Restricted Stock Award that will vest 50% on 3/15/2028 and 50% on 3/15/2029, depending on achievement of certain goals during the performance period 1/1/2027 through 12/31/2027
Footnote F3 (shares): Restricted Stock Award vesting as to 25% on February 1, 2027; 25% on February 1, 2028; 25% on February 1, 2029; and 25% on February 1, 2030.

Feb 2, 2026

Rebecca Underwood - Officer

Tax withholding / forfeiture

Common Stock

425^{footnote F1}

$259.91

$110K

Feb 1, 2026

Rebecca Underwood - Officer

Grant or award

Common Stock

2,513^{footnote F2}

$0.00

Feb 1, 2026

Rebecca Underwood - Officer

Grant or award

Common Stock

838^{footnote F3}

$0.00

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
Footnote F2 (shares): Performance-Based Restricted Stock Award that will vest 50% on 3/15/2028 and 50% on 3/15/2029, depending on achievement of certain goals during the performance period 1/1/2027 through 12/31/2027
Footnote F3 (shares): Restricted Stock Award vesting as to 25% on February 1, 2027; 25% on February 1, 2028; 25% on February 1, 2029; and 25% on February 1, 2030.

Feb 2, 2026

Robert W. Harrison - Officer

Tax withholding / forfeiture

Common Stock

184^{footnote F1}

$259.91

$48K

Feb 1, 2026

Robert W. Harrison - Officer

Grant or award

Common Stock

1,003^{footnote F2}

$0.00

Feb 1, 2026

Robert W. Harrison - Officer

Grant or award

Common Stock

430^{footnote F3}

$0.00

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
Footnote F2 (shares): Performance-Based Restricted Stock Award that will vest 50% on 3/15/2028 and 50% on 3/15/2029, depending on achievement of certain goals during the performance period 1/1/2027 through 12/31/2027
Footnote F3 (shares): Restricted Stock Award vesting as to 25% on February 1, 2027; 25% on February 1, 2028; 25% on February 1, 2029; and 25% on February 1, 2030.

Feb 2, 2026

Eric W. Gerstenberg - Officer

Tax withholding / forfeiture

Common Stock

4,934^{footnote F1}

$259.91

$1.28M

Feb 1, 2026

Eric W. Gerstenberg - Officer

Grant or award

Common Stock

10,290^{footnote F2}

$0.00

Feb 1, 2026

Eric W. Gerstenberg - Officer

Grant or award

Common Stock

10,690^{footnote F3}

$0.00

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
Footnote F2 (shares): Performance-Based Restricted Stock Award that will vest 50% on 3/15/2028 and 50% on 3/15/2029, depending on achievement of certain goals during the performance period 1/1/2027 through 12/31/2027
Footnote F3 (shares): Restricted Stock Award vesting as to 25% on February 1, 2027; 25% on February 1, 2028; 25% on February 1, 2029; and 25% on February 1, 2030.

Feb 2, 2026

Charles H. Geer II - Officer

Tax withholding / forfeiture

Common Stock

197^{footnote F1}

$259.91

$51K

Feb 1, 2026

Charles H. Geer II - Officer

Grant or award

Common Stock

1,843^{footnote F2}

$0.00

Feb 1, 2026

Charles H. Geer II - Officer

Grant or award

Common Stock

503^{footnote F3}

$0.00

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
Footnote F2 (shares): Performance-Based Restricted Stock Award that will vest 50% on 3/15/2028 and 50% on 3/15/2029, depending on achievement of certain goals during the performance period 1/1/2027 through 12/31/2027
Footnote F3 (shares): Restricted Stock Award vesting as to 25% on February 1, 2027; 25% on February 1, 2028; 25% on February 1, 2029; and 25% on February 1, 2030.

Feb 2, 2026

Sharon M. Gabriel - Officer

Tax withholding / forfeiture

Common Stock

508^{footnote F1}

$259.91

$132K

Feb 1, 2026

Sharon M. Gabriel - Officer

Grant or award

Common Stock

2,073^{footnote F2}

$0.00

Feb 1, 2026

Sharon M. Gabriel - Officer

Grant or award

Common Stock

566^{footnote F3}

$0.00

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
Footnote F2 (shares): Performance-Based Restricted Stock Award that will vest 50% on 3/15/2028 and 50% on 3/15/2029, depending on achievement of certain goals during the performance period 1/1/2027 through 12/31/2027
Footnote F3 (shares): Restricted Stock Award vesting as to 25% on February 1, 2027; 25% on February 1, 2028; 25% on February 1, 2029; and 25% on February 1, 2030.

Feb 2, 2026

Eric J. Dugas - Officer

Tax withholding / forfeiture

Common Stock

567^{footnote F1}

$259.91

$147K

Feb 1, 2026

Eric J. Dugas - Officer

Grant or award

Common Stock

3,066^{footnote F2}

$0.00

Feb 1, 2026

Eric J. Dugas - Officer

Grant or award

Common Stock

1,022^{footnote F3}

$0.00

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
Footnote F2 (shares): Performance-Based Restricted Stock Award that will vest 50% on 3/15/2028 and 50% on 3/15/2029, depending on achievement of certain goals during the performance period 1/1/2027 through 12/31/2027
Footnote F3 (shares): Restricted Stock Award vesting as to 25% on February 1, 2027; 25% on February 1, 2028; 25% on February 1, 2029; and 25% on February 1, 2030.

Feb 2, 2026

Jeroen Diderich - Officer

Tax withholding / forfeiture

Common Stock

105^{footnote F1}

$259.91

$27K

Feb 1, 2026

Jeroen Diderich - Officer

Grant or award

Common Stock

3,141^{footnote F2}

$0.00

Feb 1, 2026

Jeroen Diderich - Officer

Grant or award

Common Stock

1,047^{footnote F3}

$0.00

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
Footnote F2 (shares): Performance-Based Restricted Stock Award that will vest 50% on 3/15/2028 and 50% on 3/15/2029, depending on achievement of certain goals during the performance period 1/1/2027 through 12/31/2027
Footnote F3 (shares): Restricted Stock Award vesting as to 25% on February 1, 2027; 25% on February 1, 2028; 25% on February 1, 2029; and 25% on February 1, 2030.

Feb 2, 2026

George L. Curtis - Officer

Tax withholding / forfeiture

Common Stock

249^{footnote F1}

$259.91

$65K

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.

Dec 1, 2025

Robert W. Harrison - Officer

Tax withholding / forfeiture

Common Stock

122^{footnote F1}

$228.54

$28K

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.

Nov 13, 2025

Lauren States

Gift

Common Stock

245^{footnote F1}

$0.00

Footnote F1 (shares): Charitable gift

Nov 1, 2025

Charles H. Geer II - Officer

Tax withholding / forfeiture

Common Stock

294^{footnote F1}

$210.51

$62K

Footnote F1 (shares): Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.

Filed

Filer

Relationship

Market value

Notice

Aug 14, 2026

GERSTENBERG ERIC W

Officer

2,500

$805K

View on EDGAR

Aug 3, 2026

ANDREA ROBERTSON

Director

789

$248K

Member	Type	Traded	Disclosed	Value range	Owner	Days to disclose	Filing
April McClain DelaneyDemocrat, MD-06	Sale

Member

Type

Traded

Disclosed

Value range

Owner

Days to disclose

Filing

April McClain DelaneyDemocrat, MD-06

Sale