DD insider ownership: who sold, why, and what they still hold

Who	Shares	Price	% of total stake	Total stake after	Trade date	Filed
Edward Breen Director	34,485	n/a	n/a	n/a	Aug 17, 2026	Aug 19, 2026

What stands out

Tax withholding outweighed market sales: the company withheld $5.0M of officers' and directors' shares for taxes, against $607K sold on the open market. The largest was Edward Breen ($2.6M withheld).Largest withholding, Dec 31, 2025

Percentages cover 14 of 24 officers and directors. 10 are left out

Left out: Lori Koch, Edward Breen, Erik Hoover, Alexander Cutler, Christopher Raia, Frederick Lowery, Antonella Franzen, Beth Ferreira, Madeleine Barber and Donald Macpherson (holdings couldn't be fully reconciled).

Disclosed company stock is not an insider's whole wealth.

Who sold, and how much of their stake

Officers and directors, past 12 months. Each bar is the insider's vested stake at the start of the period (Oct 8, 2025). The gold part is what they sold.

SoldRest of starting stakeAdded during the period

Lori Koch

CEO, Director

No bar: holdings couldn't be fully reconciled.

$368KNo plan disclosed

Erik Hoover

SVP & General Counsel

No bar: holdings couldn't be fully reconciled.

$239KNo plan disclosed

Amounts, filings and trading plans for each seller

Selling by month

Officers and directors, Oct 2025 to Oct 2026. Each sale is counted once: under a disclosed plan, else to cover taxes, else no plan disclosed.

Disclosed planTo cover taxesNo plan disclosed

Common questions

Is the DuPont CEO selling stock?

Yes. Lori Koch sold 9.3K shares ($368K) in the past 12 months, none of it under a trading plan disclosed in the filings.

Why are DuPont insiders selling?

Filings rarely give a reason, and we don't guess at one. What they show is how the sales were made: 0% of sales by value ran under 10b5-1 trading plans disclosed in the filings and 100% had no disclosed plan. A trading plan schedules sales in advance.

Are any DuPont insiders buying?

No. Officers and directors reported no purchases in the past 12 months.

How much of their stake did DuPont insiders sell?

About 2.2% overall, give or take 0.1 points. The figure is approximate: Two sellers' reported holdings differ from their reported transactions by under 5%. That covers the 12 months to Oct 8, 2026 and counts vested shares reported on SEC Forms 3, 4 and 5, which is not an insider's whole wealth.

The evidence

Who sold2 officers and directors: amount, % of holdings, trading plan

Who sold	Amount	% of holdings	Trading plan
Lori Koch CEO, Director	$368K 9.3K shares	i No percentage: holdings couldn't be fully reconciled.	No plan disclosed
Erik Hoover SVP & General Counsel	$239K 6K shares	i No percentage: holdings couldn't be fully reconciled.	No plan disclosed

The full ownership picture14 of 24 insiders fully reconciled · 24 officers and directors

Vested shares across all share classes, held directly and through trusts, LLCs and family members, as reported on SEC Forms 3, 4 and 5. Unvested awards and options are never counted as owned shares.

Insider

Held Oct 8, 2025

Sold

Held Oct 8, 2026

Still held

Lori Koch

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: +1,168.9445 shares on Oct 31, 2025 (Direct). See the filing Sales and other transactions for Lori Koch are complete.

CEO, Director

n/a

−9.3K

n/a

Vesting, gifts, unvested awards and holding lines for Lori Koch

+9Kshares vested or exercised

0gifted (net of own trusts)

−25Kwithheld by the company for taxes

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: +1,168.9445 shares on Oct 31, 2025 (Direct). The balances below are as reported, not verified totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	188,543	345,172
Retirement Savings Plan	Common Stock	261	0

Jon Kemp

Includes unvested RSUs, amount not disclosed.

President, ElectronicsCo.

150K

no sales

Vesting, gifts, unvested awards and holding lines for Jon Kemp

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	150,070	150,070

Edward Breen

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: -152,029.8882 shares on Aug 17, 2026 (Direct). See the filing Sales and other transactions for Edward Breen are complete.

Director

n/a

Vesting, gifts, unvested awards and holding lines for Edward Breen

0shares vested or exercised

−34Kgifted (net of own trusts)

−58Kwithheld by the company for taxes

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.
Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: -152,029.8882 shares on Aug 17, 2026 (Direct). The balances below are as reported, not verified totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	125,978	91,493

Additional holdings last reported Jun 15, 2018, not confirmed since: 264,668 shares. Not included in any total or percentage on this page.

Family trust (GRAT), Common Stock: 260,762 shares, last reported May 15, 2018
Family trust, Common Stock: 3,906 shares, last reported Jun 15, 2018

Erik Hoover

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: +385.3573 shares on Oct 31, 2025 (Direct). See the filing Sales and other transactions for Erik Hoover are complete.

SVP & General Counsel

n/a

−6K

n/a

Vesting, gifts, unvested awards and holding lines for Erik Hoover

+6Kshares vested or exercised

0gifted (net of own trusts)

−8.5Kwithheld by the company for taxes

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: +385.3573 shares on Oct 31, 2025 (Direct). The balances below are as reported, not verified totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	88,637	115,972

Alexander Cutler

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: -57,004.6236 shares on Aug 28, 2026 (Direct). See the filing Sales and other transactions for Alexander Cutler are complete.

Director

n/a

Vesting, gifts, unvested awards and holding lines for Alexander Cutler

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: -57,004.6236 shares on Aug 28, 2026 (Direct). The balances below are as reported, not verified totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	73,879	25,155

Christopher Raia

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: +332.787 shares on Oct 31, 2025 (Direct). See the filing Sales and other transactions for Christopher Raia are complete.

Senior Vice President & CHRO

n/a

Vesting, gifts, unvested awards and holding lines for Christopher Raia

0shares vested or exercised

0gifted (net of own trusts)

−7.2Kwithheld by the company for taxes

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: +332.787 shares on Oct 31, 2025 (Direct). The balances below are as reported, not verified totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	63,243	85,911

Steven Larrabee

Minor difference of 84 shares. Difference is under 0.5% of holdings. Includes unvested RSUs, amount not disclosed. Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

SVP & CIO

39K

46K

no sales

Vesting, gifts, unvested awards and holding lines for Steven Larrabee

0shares vested or exercised

0gifted (net of own trusts)

−6.4Kwithheld by the company for taxes

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.
Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	38,585	45,364
Retirement Savings Plan	Common Stock	147	147

Additional holdings last reported Jun 1, 2019, not confirmed since: 131 shares. Not included in any total or percentage on this page.

DuPont Retirement Savings Plan, Common Stock: 131 shares, last reported Jun 1, 2019

Reconciliation: minor difference of 84 shares. Difference is under 0.5% of holdings.

Terrence Curtin

Includes unvested RSUs, amount not disclosed.

Director

38K

no sales

Vesting, gifts, unvested awards and holding lines for Terrence Curtin

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	30,967	30,967
family trusts	Common Stock	7,500	7,500

Pont du

Minor difference of 571 shares. Unexplained small increases, consistent with stock unit vesting or reinvested dividends. Includes unvested RSUs, amount not disclosed. Unexplained small increases, consistent with stock unit vesting or reinvested dividends. Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Director

38K

43K

no sales

Vesting, gifts, unvested awards and holding lines for Pont du

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.
Unexplained small increases, consistent with stock unit vesting or reinvested dividends.
Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	37,770	42,371
Family trusts and by trust for children	Common Stock	591	591

Additional holdings last reported Apr 28, 2021, not confirmed since: 581 shares. Not included in any total or percentage on this page.

Family trust and by trust for children, Common Stock: 581 shares, last reported Apr 28, 2021

Reconciliation: minor difference of 571 shares. Unexplained small increases, consistent with stock unit vesting or reinvested dividends.

Frederick Lowery

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: -26,626.0328 shares on Aug 28, 2026 (Direct). See the filing Sales and other transactions for Frederick Lowery are complete.

Director

n/a

Vesting, gifts, unvested awards and holding lines for Frederick Lowery

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: -26,626.0328 shares on Aug 28, 2026 (Direct). The balances below are as reported, not verified totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	33,270	13,862

Antonella Franzen

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: +278.5427 shares on Oct 31, 2025 (Direct). See the filing Sales and other transactions for Antonella Franzen are complete.

SVP & CFO

n/a

Vesting, gifts, unvested awards and holding lines for Antonella Franzen

0shares vested or exercised

0gifted (net of own trusts)

−4.1Kwithheld by the company for taxes

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: +278.5427 shares on Oct 31, 2025 (Direct). The balances below are as reported, not verified totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	31,589	68,809

Luther Kissam IV

Includes unvested RSUs, amount not disclosed.

Director

26K

no sales

Vesting, gifts, unvested awards and holding lines for Luther Kissam IV

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	25,998	25,998

Steven Sterin

Includes unvested RSUs, amount not disclosed.

Director

21K

no sales

Vesting, gifts, unvested awards and holding lines for Steven Sterin

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	21,389	21,389

Ruby Chandy

Minor difference of 417 shares. Unexplained small increases, consistent with stock unit vesting or reinvested dividends. Includes unvested RSUs, amount not disclosed. Unexplained small increases, consistent with stock unit vesting or reinvested dividends.

Director

21K

25K

no sales

Vesting, gifts, unvested awards and holding lines for Ruby Chandy

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.
Unexplained small increases, consistent with stock unit vesting or reinvested dividends.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	20,998	25,444

Reconciliation: minor difference of 417 shares. Unexplained small increases, consistent with stock unit vesting or reinvested dividends.

Michael Goss

Includes unvested RSUs, amount not disclosed.

Controller

20K

no sales

Vesting, gifts, unvested awards and holding lines for Michael Goss

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	20,279	20,279

Amy Brady

Minor difference of 270 shares. Unexplained small increases, consistent with stock unit vesting or reinvested dividends. Includes unvested RSUs, amount not disclosed. Unexplained small increases, consistent with stock unit vesting or reinvested dividends.

Director

19K

24K

no sales

Vesting, gifts, unvested awards and holding lines for Amy Brady

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.
Unexplained small increases, consistent with stock unit vesting or reinvested dividends.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	19,275	23,781

Reconciliation: minor difference of 270 shares. Unexplained small increases, consistent with stock unit vesting or reinvested dividends.

Jeroen Bloemhard

Minor difference of 70 shares. Difference is under 0.5% of holdings. Started reporting during the period; starting holdings are from the Form 3.

President, HC and Water Tech

16K

25K

no sales

Vesting, gifts, unvested awards and holding lines for Jeroen Bloemhard

0shares vested or exercised

0gifted (net of own trusts)

−1.3Kwithheld by the company for taxes

none reportedunvested awards, start → end

Started reporting during the period; starting holdings are from the Form 3.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	16,068	24,770

Reconciliation: minor difference of 70 shares. Difference is under 0.5% of holdings.

Kristina Johnson

Director

11K

no sales

Vesting, gifts, unvested awards and holding lines for Kristina Johnson

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	10,836	10,836

Beth Ferreira

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: -13,635.2692 shares on Aug 6, 2026 (Direct). See the filing Sales and other transactions for Beth Ferreira are complete.

President, Diversified Indstrl

n/a

Vesting, gifts, unvested awards and holding lines for Beth Ferreira

0shares vested or exercised

0gifted (net of own trusts)

−374withheld by the company for taxes

none reportedunvested awards, start → end

Started reporting during the period; starting holdings are from the Form 3.

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: -13,635.2692 shares on Aug 6, 2026 (Direct). The balances below are as reported, not verified totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	10,650	6,560

Matthew Abbott

Minor difference of -1 share. Difference is under 0.5% of holdings. Started reporting during the period; starting holdings are from the Form 3.

SVP, CIO

8.1K

12K

no sales

Vesting, gifts, unvested awards and holding lines for Matthew Abbott

0shares vested or exercised

0gifted (net of own trusts)

−805withheld by the company for taxes

none reportedunvested awards, start → end

Started reporting during the period; starting holdings are from the Form 3.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	8,094	12,446

Reconciliation: minor difference of -1 share. Difference is under 0.5% of holdings.

James Lico

Minor difference of 112 shares. Unexplained small increases, consistent with stock unit vesting or reinvested dividends. Unexplained small increases, consistent with stock unit vesting or reinvested dividends.

Director

6.7K

11K

no sales

Vesting, gifts, unvested awards and holding lines for James Lico

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Unexplained small increases, consistent with stock unit vesting or reinvested dividends.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	6,698	10,839

Reconciliation: minor difference of 112 shares. Unexplained small increases, consistent with stock unit vesting or reinvested dividends.

Kurt McMaken

Minor difference of 66 shares. Unexplained small increases, consistent with stock unit vesting or reinvested dividends. Unexplained small increases, consistent with stock unit vesting or reinvested dividends.

Director

4.2K

8.3K

no sales

Vesting, gifts, unvested awards and holding lines for Kurt McMaken

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Unexplained small increases, consistent with stock unit vesting or reinvested dividends.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	4,162	8,258

Reconciliation: minor difference of 66 shares. Unexplained small increases, consistent with stock unit vesting or reinvested dividends.

Madeleine Barber

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: -3,724.2928 shares on Aug 6, 2026 (Direct). See the filing Sales and other transactions for Madeleine Barber are complete.

VP Chief Accounting Officer

n/a

Vesting, gifts, unvested awards and holding lines for Madeleine Barber

0shares vested or exercised

0gifted (net of own trusts)

−101withheld by the company for taxes

none reportedunvested awards, start → end

Started reporting during the period; starting holdings are from the Form 3.

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: -3,724.2928 shares on Aug 6, 2026 (Direct). The balances below are as reported, not verified totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	2,840	1,793

Donald Macpherson

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: -3,909.2814 shares on Aug 28, 2026 (Direct). See the filing Sales and other transactions for Donald Macpherson are complete.

Director

n/a

Vesting, gifts, unvested awards and holding lines for Donald Macpherson

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Started reporting during the period; starting holdings are from the Form 3.

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: -3,909.2814 shares on Aug 28, 2026 (Direct). The balances below are as reported, not verified totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	0	2,196

14 of 24 insiders fully reconciled: starting holdings plus reported transactions match ending holdings (6 exactly, 8 with a minor or footnoted difference). For 10 we show sales but not holdings; the ! icon on their rows explains why. Percentages cover 14 of 24 officers and directors. Left out: Lori Koch, Edward Breen, Erik Hoover, Alexander Cutler, Christopher Raia, Frederick Lowery, Antonella Franzen, Beth Ferreira, Madeleine Barber and Donald Macpherson (holdings couldn't be fully reconciled). "Still held" compares ending with starting vested shares; a plus sign means the holding grew.

What explains the selling$607K of sales by plan status, purpose, seller and month

Officer and director open-market sales: $607K across 15,277 shares. Plan status and stated purpose are separate questions, and a sale can have both.

By plan status

No plan disclosed · $607K

Sales with no 10b5-1 plan and no tax reference in the filing. $368K of it is Lori Koch. No plan disclosed is a statement about the filing, not about why the sale happened. Largest such sale: Lori Koch, Nov 28, 2025

Taxes

111,819 shares ($5.0M) were withheld by the company for taxes, which isn't a market sale.

Seller	Shares sold	Proceeds	Under a disclosed plan	Share of total	Sales dates
Lori Koch CEO, Director	9.3K	$368K	0%	61%	Nov 28, 2025 to Jun 2, 2026
Erik Hoover SVP & General Counsel	6K	$239K	0%	39%	Nov 28, 2025 to Nov 28, 2025

Sales by month

Month	Sale proceeds	Disclosed plan	To cover taxes	No plan disclosed
Oct 2025	$0	$0	$0	$0
Nov 2025	$595K	$0	$0	$595K
Dec 2025	$0	$0	$0	$0
Jan 2026	$0	$0	$0	$0
Feb 2026	$0	$0	$0	$0
Mar 2026	$0	$0	$0	$0
Apr 2026	$0	$0	$0	$0
May 2026	$0	$0	$0	$0
Jun 2026	$13K	$0	$0	$13K
Jul 2026	$0	$0	$0	$0
Aug 2026	$0	$0	$0	$0
Sep 2026	$0	$0	$0	$0
Oct 2026	$0	$0	$0	$0

Is this normal? Selling year by year5 earlier years to compare with

Less than usual: about a third of the 5-year average. 2 insiders sold; the average is 4 a year.

12 months ending	Shares sold	Insiders who sold	Proceeds
Oct 8, 2026 Latest 12 months	15K	2	$607K
Oct 8, 2025 1 year earlier	80K	2	$6.2M
Oct 8, 2024 2 years earlier	34K	4	$2.6M
Oct 9, 2023 3 years earlier	83K	5	$6.3M
Oct 9, 2022 4 years earlier	9.5K	4	$792K
Oct 9, 2021 5 years earlier	45K	4	$3.5M

Open-market sales (Form 4 code S) by people who were officers or directors, in split-adjusted shares. Earlier years include people who have since left. A sale that an outside holder also reports (a family trust, a fund) is counted with outside holders in every year. Shares, not dollars, are compared, so a change in the stock price doesn't look like a change in selling. Years the filings don't fully cover are shown but left out of the average.

Known gaps and uncertainty10 insiders whose holdings couldn't be fully reconciled

Lori Koch: holdings couldn't be fully reconciled (difference of 3,182 shares). Balance changed without a matching transaction, and the footnote does not state the amount: +1,168.9445 shares on Oct 31, 2025 (Direct). Filing, Oct 31, 2025

Footnote: "On October 31, 2025, in connection with the Issuer's spin-off of its Electronics business (the "Spin-Off"), the People and Compensation Committee (the "Committee") of the Board of Directors of the Issuer approved a modification of the award of 28,099, 26,297 and 43,817 performance share units ("PSUs") previously granted to the reporting person on May 4, 2023, February 15, 2024 and May 31, 2024, respectively, which modification is intended to preserve the underlying value of the outstanding PSU awards. As modified, the PSUs were converted into time-based restricted stock units ("RSUs"), with th"

Edward Breen: holdings couldn't be fully reconciled (difference of -137,912 shares). Balance changed without a matching transaction, and the footnote does not state the amount: -152,029.8882 shares on Aug 17, 2026 (Direct). Filing, Aug 17, 2026

Footnote: "Represents the funding of new GRAT 2026-3. | Includes acquisition of shares pursuant to dividend reinvestment."

Erik Hoover: holdings couldn't be fully reconciled (difference of 891 shares). Balance changed without a matching transaction, and the footnote does not state the amount: +385.3573 shares on Oct 31, 2025 (Direct). Filing, Oct 31, 2025

Footnote: "On October 31, 2025, in connection with the Issuer's spin-off of its Electronics business (the "Spin-Off"), the People and Compensation Committee (the "Committee") of the Board of Directors of the Issuer approved a modification of the award of 14,050 and 13,149 performance share units ("PSUs") previously granted to the reporting person on May 4, 2023 and February 15, 2024, respectively, which modification is intended to preserve the underlying value of the outstanding PSU awards. As modified, the PSUs were converted into time-based restricted stock units ("RSUs"), with the number of RSUs so co"

Alexander Cutler: holdings couldn't be fully reconciled (difference of -56,419 shares). Balance changed without a matching transaction, and the footnote does not state the amount: -57,004.6236 shares on Aug 28, 2026 (Direct). Filing, Aug 28, 2026

Footnote: "Includes acquisition of shares pursuant to dividend reinvestment."

Christopher Raia: holdings couldn't be fully reconciled (difference of 761 shares). Balance changed without a matching transaction, and the footnote does not state the amount: +332.787 shares on Oct 31, 2025 (Direct). Filing, Oct 31, 2025

Footnote: "On October 31, 2025, in connection with the Issuer's spin-off of its Electronics business (the "Spin-Off"), the People and Compensation Committee (the "Committee") of the Board of Directors of the Issuer approved a modification of the award of 11,708 and 10,957 performance share units ("PSUs") previously granted to the reporting person on May 4, 2023 and February 15, 2024, respectively, which modification is intended to preserve the underlying value of the outstanding PSU awards. As modified, the PSUs were converted into time-based restricted stock units ("RSUs"), with the number of RSUs so co"

Frederick Lowery: holdings couldn't be fully reconciled (difference of -26,278 shares). Balance changed without a matching transaction, and the footnote does not state the amount: -26,626.0328 shares on Aug 28, 2026 (Direct). Filing, Aug 28, 2026

Footnote: "Includes acquisition of shares pursuant to dividend reinvestment."

Antonella Franzen: holdings couldn't be fully reconciled (difference of 745 shares). Balance changed without a matching transaction, and the footnote does not state the amount: +278.5427 shares on Oct 31, 2025 (Direct). Filing, Oct 31, 2025

Footnote: "On October 31, 2025, in connection with the Issuer's spin-off of its Electronics business (the "Spin-Off"), the People and Compensation Committee (the "Committee") of the Board of Directors of the Issuer approved a modification of the award of 2,248, 1,754 and 14,606 performance share units ("PSUs") previously granted to the reporting person on May 4, 2023, February 15, 2024 and May 31, 2024, respectively, which modification is intended to preserve the underlying value of the outstanding PSU awards. As modified, the PSUs were converted into time-based restricted stock units ("RSUs"), with the "

Beth Ferreira: holdings couldn't be fully reconciled (difference of -13,635 shares). Balance changed without a matching transaction, and the footnote does not state the amount: -13,635.2692 shares on Aug 6, 2026 (Direct). Filing, Aug 6, 2026

Footnote: "Taxes withheld on lapsed RSUs and associated dividend equivalent units. | Includes acquisition of shares pursuant to dividend reinvestment."

Madeleine Barber: holdings couldn't be fully reconciled (difference of -3,724 shares). Balance changed without a matching transaction, and the footnote does not state the amount: -3,724.2928 shares on Aug 6, 2026 (Direct). Filing, Aug 6, 2026

Footnote: "Taxes withheld on lapsed RSUs and associated dividend equivalent units. | Includes acquisition of shares pursuant to dividend reinvestment."

Donald Macpherson: holdings couldn't be fully reconciled (difference of -3,905 shares). Balance changed without a matching transaction, and the footnote does not state the amount: -3,909.2814 shares on Aug 28, 2026 (Direct). Filing, Aug 28, 2026

Footnote: "Includes acquisition of shares pursuant to dividend reinvestment."

Steven Larrabee: minor difference of 84 shares. Difference is under 0.5% of holdings.

Pont du: minor difference of 571 shares. Unexplained small increases, consistent with stock unit vesting or reinvested dividends.

Ruby Chandy: minor difference of 417 shares. Unexplained small increases, consistent with stock unit vesting or reinvested dividends.

Amy Brady: minor difference of 270 shares. Unexplained small increases, consistent with stock unit vesting or reinvested dividends.

Jeroen Bloemhard: minor difference of 70 shares. Difference is under 0.5% of holdings.

Matthew Abbott: minor difference of -1 share. Difference is under 0.5% of holdings.

James Lico: minor difference of 112 shares. Unexplained small increases, consistent with stock unit vesting or reinvested dividends.

Kurt McMaken: minor difference of 66 shares. Unexplained small increases, consistent with stock unit vesting or reinvested dividends.

Inferred rename: "family trust" is treated as the same holder as "family trusts", because the old name was never reported again and the new one opened with the same balance (7,500 shares). Old name, new name

External context: we only cite outside events when a documented connection exists. None is shown for this period.

Sources and methodology797 filings from SEC EDGAR, and how we read them

All 797 Forms 3, 4 and 5 filed for DuPont (SEC CIK 1666700) from Sep 11, 2017 to Sep 1, 2026, retrieved from SEC EDGAR on Oct 8, 2026. Prices are the ones reported in each filing, often weighted averages. 75 filings were left out because DuPont filed them as an owner of another company's stock.

Holdings. Each holding line (a share class plus an owner, such as a trust or LLC) carries its last reported balance forward. Entities first reported during the period start at zero, so transfers between an insider's own trusts don't count as selling. Lines not reported for three years or more are listed separately and left out of totals.

Sales. A sale counts as under a 10b5-1 plan if its footnote cites one or the filing's Rule 10b5-1 box is checked, and as tax-related if its footnote cites tax obligations or sell-to-cover. Shares withheld by the company for taxes are listed separately. Sales with neither attribute are labeled "no plan disclosed".

Full methodology

Former or inactive filers (35)No filing in 18 months; last reported balances, not in any total

Name	Last filed	Last reported balance
Deanna Mulligan	Mar 4, 2025	17,928 shares, last reported balance as of Feb 28, 2025
Leland Weaver	Feb 25, 2025	51,782 shares, last reported balance as of Feb 23, 2025
Raj Ratnakar	Sep 5, 2023	31,720 shares, last reported balance as of Aug 31, 2023
Raymond Milchovich	May 25, 2023	20,423 shares, last reported balance as of May 24, 2023
Randy Stone	Mar 4, 2022	93,954 shares, last reported balance as of Mar 2, 2022
Rose Lee	Aug 26, 2021	43,356 shares, last reported balance as of Aug 24, 2021
Frank Clyburn	Apr 30, 2021	8,034 shares, last reported balance as of Apr 28, 2021
Darrell Ford	Nov 10, 2020	36,686 shares, last reported balance as of Nov 7, 2020
Rajiv Gupta	May 29, 2020	6,468 shares, last reported balance as of May 27, 2020
Matthias Heinzel	Feb 21, 2020	112,215 shares, last reported balance as of Feb 19, 2020
Christopher Doyle	Feb 19, 2020	127,712 shares, last reported balance as of Feb 17, 2020
Jeanmarie Desmond	Feb 19, 2020	21,127 shares, last reported balance as of Feb 17, 2020
Richard Davis	Aug 5, 2019	11,378 shares, last reported balance as of Jul 1, 2018
Lamberto Andreotti	Jun 26, 2019	22,231 shares, last reported balance as of May 21, 2019
James Fahey	Jun 10, 2019	36,304 shares, last reported balance as of Jun 1, 2019
Lois Juliber	Jun 3, 2019	107,646 shares, last reported balance as of May 30, 2019
Jacqueline Barton	Apr 15, 2019	52,037 shares, last reported balance as of Jul 1, 2018
James Fitterling	Apr 3, 2019	364,557 shares, last reported balance as of Apr 1, 2019
Howard Ungerleider	Apr 3, 2019	339,050 shares, last reported balance as of Apr 1, 2019
James Collins Jr.	Apr 3, 2019	463,502 shares, last reported balance as of Apr 1, 2019
Stacy Fox	Apr 3, 2019	172,237 shares, last reported balance as of Apr 1, 2019
Ronald Edmonds	Feb 28, 2019	99,852 shares, last reported balance as of Feb 26, 2019
Ajay Banga	Jan 7, 2019	17,496 shares, last reported balance as of Jan 1, 2019
Robert Brown	Sep 18, 2018	46,036 shares, last reported balance as of Sep 14, 2018
Marillyn Hewson	Sep 18, 2018	62,457 shares, last reported balance as of Sep 14, 2018
Lee Thomas	Sep 18, 2018	40,312 shares, last reported balance as of Sep 14, 2018
Pat Ward	Sep 18, 2018	16,030 shares, last reported balance as of Sep 14, 2018
Charles Kalil	Aug 29, 2018	312,329 shares, last reported balance as of Aug 27, 2018
Andrew Liveris	Jun 13, 2018	1,192,746 shares, last reported balance as of Jun 12, 2018
James Bell	Apr 26, 2018	38,336 shares, last reported balance as of Apr 25, 2018
Jeff Fettig	Apr 26, 2018	46,010 shares, last reported balance as of Apr 25, 2018
Paul Polman	Apr 26, 2018	51,460 shares, last reported balance as of Apr 25, 2018
James Ringler	Apr 26, 2018	54,530 shares, last reported balance as of Apr 25, 2018
Dennis Reilley	Apr 26, 2018	41,326 shares, last reported balance as of Apr 25, 2018
Ruth Shaw	Apr 26, 2018	45,069 shares, last reported balance as of Apr 25, 2018

DuPont insiders sold $607K in the past 12 months. How much of their stake is that?

What stands out

Who sold, and how much of their stake

Selling by month

Common questions

Is the DuPont CEO selling stock?

Why are DuPont insiders selling?

Are any DuPont insiders buying?

How much of their stake did DuPont insiders sell?

The evidence

No plan disclosed · $607K

Taxes

Sales by month