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

Who	Shares	Price	% of total stake	Total stake after	Trade date	Filed
Francois Morin CFO and Treasurer	11,010	$99.32	3.5%	299K	Aug 18, 2026	Aug 20, 2026

What stands out

Four insiders sold $28.5M with no disclosed plan: John Pasquesi ($20.0M), Maamoun Rajeh ($4.6M) and Nicolas Papadopoulo ($2.1M, 2.7% of holdings), plus 1 more. The filings don't state a reason.John Pasquesi: largest such sale, Dec 12, 2025 · Maamoun Rajeh: largest such sale, Feb 11, 2026 · Nicolas Papadopoulo: largest such sale, Mar 10, 2026

Daniel Houston bought 5.3K shares for $499K, first on Apr 30, 2026.Purchase, Apr 30, 2026

Three officers sold shares but ended with larger stakes, because more shares came in than were sold: Nicolas Papadopoulo (sold 22K, 2.7% of starting holdings; 90K added), Francois Morin (sold 19K, 6.9% of starting holdings; 43K added) and David Gansberg (sold 5.9K, 1.8% of starting holdings; 46K added).Nicolas Papadopoulo: largest sale, Mar 10, 2026 · Francois Morin: largest sale, Aug 18, 2026 · David Gansberg: largest sale, Mar 10, 2026

Percentages cover 16 of 19 officers and directors. Left out: John Pasquesi (holdings couldn't be fully reconciled); John Bunce Jr. (most holdings were last confirmed in 2018); Maamoun Rajeh (most holdings were last confirmed in 2022). 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

John Pasquesi

Director

No bar: holdings couldn't be fully reconciled.

$20.0MNo plan disclosed

Maamoun Rajeh

President, Arch Capital Group

No bar: most holdings were last confirmed in 2022.

$4.6MNo plan disclosed

Nicolas Papadopoulo

CEO, Director

Sold 2.7%, but 22K shares were added (mostly vesting), so the stake grew

2.7% · $2.1MNo plan disclosed

Francois Morin

CFO and Treasurer

Sold 6.9%, but 11K shares were added (mostly vesting), so the stake grew

6.9% · $1.9MNo plan disclosed

David Gansberg

President, Arch Capital Group

Sold 1.8%, but 11K shares were added (mostly vesting), so the stake grew

1.8% · $569KNo plan disclosed

All 6 sellers

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 Arch Capital Group CEO selling stock?

Yes. Nicolas Papadopoulo sold 22K shares ($2.1M, 2.7% of starting holdings) in the past 12 months, none of it under a trading plan disclosed in the filings.

Why are Arch Capital Group 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 Arch Capital Group insiders buying?

Yes. 1 officer or director reported 1 purchase in the past 12 months (Form 4 code P, which includes private purchases).

How much of their stake did Arch Capital Group insiders sell?

About 2.0% overall. As a group they ended with more shares than they started with. These figures leave out John Bunce Jr., the largest holder (most holdings were last confirmed in 2018). 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 sold6 officers and directors: amount, % of holdings, trading plan

Who sold	Amount	% of holdings	Trading plan
John Pasquesi Director	$20.0M 213K shares	i No percentage: holdings couldn't be fully reconciled.	No plan disclosed
Maamoun Rajeh President, Arch Capital Group	$4.6M 47K shares	i No percentage: most holdings were last confirmed in 2022.	No plan disclosed
Nicolas Papadopoulo CEO, Director	$2.1M 22K shares	2.7%	No plan disclosed
Francois Morin CFO and Treasurer	$1.9M 19K shares	6.9%	No plan disclosed
David Gansberg President, Arch Capital Group	$569K 5.9K shares	1.8%	No plan disclosed
Brian Posner Director	$145K 8K shares	6.2%	No plan disclosed

The full ownership picture18 of 19 insiders fully reconciled · 19 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

John Pasquesi

Holdings couldn't be fully reconciled. Balance changed with no matching transaction and no footnote: +1,233,376 shares on May 5, 2026 (Trust). See the filing Sales and other transactions for John Pasquesi are complete.

Director

n/a

−213K

n/a

Vesting, gifts, unvested awards and holding lines for John Pasquesi

0shares vested or exercised

−53Kgifted (net of own trusts)

none reportedunvested awards, start → end

Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Holdings couldn't be fully reconciled. Balance changed with no matching transaction and no footnote: +1,233,376 shares on May 5, 2026 (Trust). The balances below are as reported, not verified totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	.Common Shares, $.0011 par value per share	1,455	1,455
Direct	Common Shares, $.0011 par value per share	1,564	3,076
Trusts	Common Shares, $.0011 par value per share	1,682,128	1,682,128
Trust	Common Shares, $.0011 par value per share	1,527,681	2,827,681
Limited Liability Company	Common Shares, $.0011 par value per share	1,221,693	214,993
Family limited partnership	Common Shares, $.0011 par value per share	133,706	133,706

Additional holdings last reported May 4, 2023, not confirmed since: 4,896,337 shares. Not included in any total or percentage on this page.

Trust, .Common Shares, $.0011 par value per share: 698,349 shares, last reported May 4, 2023
Direct, : Common Shares, $.0011 par value per share: 2,642 shares, last reported Feb 15, 2023
Direct, Common Shares, $.0033 par value per share: 1,196 shares, last reported May 9, 2018
Trust, Common Shares, $.0033 par value per share: 509,227 shares, last reported May 9, 2018
Spouse, Common Shares, $.0033 par value per share: 509,227 shares, last reported Nov 19, 2014
Trusts, Common Shares, $.0033 par value per share: 477,412 shares, last reported May 9, 2018
Limited Liability Company, Common Shares, $.0033 par value per share: 407,231 shares, last reported Feb 27, 2018
GRAT, Common Shares, $.0033 par value per share: 230,000 shares, last reported Feb 27, 2018
Family limited partnership, Common Shares, $.0033 par value per share: 52,515 shares, last reported May 9, 2018
Direct, Common Shares, $.01 par value: 7,311 shares, last reported May 9, 2008
Direct, Common Shares, $.01 par value per share: 264,519 shares, last reported May 16, 2011
Limited Liability Company, Common Shares, $.01 par value per share: 1,152,804 shares, last reported May 16, 2011
Partnership, Common Shares, $.01 par value per share: 424,268 shares, last reported May 3, 2006
Trust, Common Shares, $.01 par value per share: 62,211 shares, last reported May 16, 2011
Family limited partnership, Common Shares, $0033 par value per share: 58,752 shares, last reported May 7, 2015
Direct, Common Shares, par value $0.01 per share: 1,563 shares, last reported Oct 23, 2003
Limited Liability Company, Common Shares, par value $0.01 per share: 37,110 shares, last reported Oct 23, 2003

John Bunce Jr.

Most of this insider's holdings were last confirmed in 2018. Confirmed in the last three years: 1,563,067 shares. Not confirmed since: 10,266,391 shares, left out of this row. "Still held" is not shown because it would cover only the smaller, confirmed part.

Director

1.56M

see note

Vesting, gifts, unvested awards and holding lines for John Bunce Jr.

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.
Held through Partnership; the director disclaims ownership beyond their own interest.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Shares, $.0011 par value per share	1,559,669	1,563,067

Additional holdings last reported May 9, 2018, not confirmed since: 10,266,391 shares. Not included in any total or percentage on this page.

Direct, Common Shares, $.0033 par value per share: 690,792 shares, last reported May 9, 2018
Direct, Common Shares, $.01 par value per share: 223,519 shares, last reported May 6, 2011
Partnership, Common Shares, $.01 par value per share: 9,348,044 shares, last reported May 3, 2006
Direct, Common Shares, par value $.01 per share: 4,036 shares, last reported Oct 1, 2003

Nicolas Papadopoulo

Minor difference of 248 shares. Difference is stated in footnotes (unreported vesting, exempt acquisition or transfer). Additional holdings last reported more than 3 years ago are shown separately and excluded from totals. New Form 3 filed 2017-03-24; earlier filings set aside.

CEO, Director

803K

−22K

872K

+8.5%

Vesting, gifts, unvested awards and holding lines for Nicolas Papadopoulo

+22Kshares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.
New Form 3 filed 2017-03-24; earlier filings set aside.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Shares, $.0011 par value per share	803,354	871,594

Additional holdings last reported May 11, 2018, not confirmed since: 220,245 shares. Not included in any total or percentage on this page.

Direct, Common Shares, $.0033 par value per share: 220,245 shares, last reported May 11, 2018

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
27,833	$87.22	Feb 27, 2034	$337K
562,867	$161.24	Nov 19, 2034	$0
56,073	$91.87	Mar 4, 2035	$418K
76,243	$100.48	Mar 3, 2036	$0

Estimate: options held × ($99.32 − strike price), using the most recent insider trade price on Form 4 (Aug 18, 2026), not a market close.

Reconciliation: minor difference of 248 shares. Difference is stated in footnotes (unreported vesting, exempt acquisition or transfer).

John Vollaro

Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Director

596K

594K

no sales

Vesting, gifts, unvested awards and holding lines for John Vollaro

0shares vested or exercised

−2.2Kgifted (net of own trusts)

none reportedunvested awards, start → end

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
an irrevocable trust	Common Shares, $.0011 par value per share	216,000	216,000
a revocable trust	Common Shares, $.0011 par value per share	194,999	192,807
Trust	Common Shares, $.0011 par value per share	185,264	185,264

Additional holdings last reported May 7, 2018, not confirmed since: 233,304 shares. Not included in any total or percentage on this page.

a revocable trust, Common Shares, $.0033 par value per share: 143,506 shares, last reported May 7, 2018
trust, Common Shares, $.0033 par value per share: 50,598 shares, last reported Dec 20, 2012
Direct, Common Shares, $.01 par value per share: 39,200 shares, last reported May 10, 2011

Maamoun Rajeh

Most of this insider's holdings were last confirmed in 2022. Confirmed in the last three years: 468,978 shares. Not confirmed since: 630,453 shares, left out of this row. "Still held" is not shown because it would cover only the smaller, confirmed part.

President, Arch Capital Group

434K

−47K

469K

see note

Vesting, gifts, unvested awards and holding lines for Maamoun Rajeh

+47Kshares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

An owner entity could not be identified from the footnotes.
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	Common Shares, $.0011 par value per share	433,589	428,378
LLC	Common Shares, $.0011 par value per share	0	40,600

Additional holdings last reported Oct 31, 2022, not confirmed since: 630,453 shares. Not included in any total or percentage on this page.

Direct, .Common Shares, $.0011 par value per share: 397,446 shares, last reported Oct 31, 2022
Direct, Common Shares, $.0033 par value per share: 117,947 shares, last reported May 11, 2018
Direct, Common Shares, $0.33 par value per share: 115,060 shares, last reported Oct 1, 2017

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
20,753	$87.22	Feb 27, 2034	$251K
13,565	$87.22	Feb 27, 2034	$164K
513,922	$161.24	Nov 19, 2034	$0
26,481	$91.87	Mar 4, 2035	$197K
24,475	$100.48	Mar 3, 2036	$0

Estimate: options held × ($99.32 − strike price), using the most recent insider trade price on Form 4 (Aug 18, 2026), not a market close.

David Gansberg

Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

President, Arch Capital Group

319K

−5.9K

337K

+5.4%

Vesting, gifts, unvested awards and holding lines for David Gansberg

+11Kshares vested or exercised

0gifted (net of own trusts)

−23Kwithheld by the company for taxes

none reportedunvested awards, start → end

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	Common Shares, $.0011 par value per share	319,382	336,559

Additional holdings last reported May 11, 2020, not confirmed since: 18,000 shares. Not included in any total or percentage on this page.

Unresolved (see footnote), Common Shares, $.0011 par value per share: 9,000 shares, last reported Mar 1, 2019
With spouse, Common Shares, $.0011 par value per share: 9,000 shares, last reported May 11, 2020

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
20,753	$87.22	Feb 27, 2034	$251K
513,922	$161.24	Nov 19, 2034	$0
26,481	$91.87	Mar 4, 2035	$197K
24,475	$100.48	Mar 3, 2036	$0

Estimate: options held × ($99.32 − strike price), using the most recent insider trade price on Form 4 (Aug 18, 2026), not a market close.

Jerome Halgan

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

CEO, Arch Glob Reinsurance Grp

305K

no sales

Vesting, gifts, unvested awards and holding lines for Jerome Halgan

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.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Shares, $.0011 par value per share	304,627	304,627

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
12,870	$27.09	May 8, 2027	$930K
13,746	$25.28	Dec 28, 2027	$1.0M
15,822	$21.55	May 11, 2028	$1.2M
15,929	$27.67	Feb 28, 2029	$1.1M
15,461	$37.42	Feb 27, 2030	$957K
13,692	$30.82	Feb 26, 2031	$938K
10,510	$42.54	Feb 25, 2032	$597K
6,604	$64.17	Feb 24, 2033	$232K
813	$66.70	Mar 6, 2033	$27K
5,534	$82.22	Feb 27, 2034	$95K
8,319	$91.87	Mar 4, 2035	$62K
7,682	$92.48	May 2, 2035	$53K
8,721	$100.48	Mar 3, 2036	$0

Estimate: options held × ($99.32 − strike price), using the most recent insider trade price on Form 4 (Aug 18, 2026), not a market close.

Francois Morin

Minor difference of -387 shares. Difference is under 0.5% of holdings. Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

CFO and Treasurer

275K

−19K

299K

+8.9%

Vesting, gifts, unvested awards and holding lines for Francois Morin

+11Kshares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

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	Common Shares, $.0011 par value per share	274,681	184,826
Trust	Common Shares, $.0011 par value per share	0	114,229

Additional holdings last reported Feb 27, 2020, not confirmed since: 117,096 shares. Not included in any total or percentage on this page.

Owned with spouse, Common Shares, $.0011 par value per share: 81,697 shares, last reported Feb 27, 2020
Direct, Common Shares, $.0033 par value per share: 8,902 shares, last reported Jun 11, 2018
Unresolved (see footnote), Common Shares, $.0033 par value per share: 26,497 shares, last reported Jun 11, 2018

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
14,975	$87.22	Feb 27, 2034	$181K
13,672	$87.22	Feb 27, 2034	$165K
52,441	$161.24	Nov 19, 2034	$0
16,945	$91.87	Mar 4, 2035	$126K
14,788	$91.87	Mar 4, 2035	$110K
19,061	$100.48	Mar 3, 2036	$0

Estimate: options held × ($99.32 − strike price), using the most recent insider trade price on Form 4 (Aug 18, 2026), not a market close.

Reconciliation: minor difference of -387 shares. Difference is under 0.5% of holdings.

Louis Petrillo

Officer of Subsidiary

140K

152K

no sales

Vesting, gifts, unvested awards and holding lines for Louis Petrillo

0shares vested or exercised

−28gifted (net of own trusts)

−8.8Kwithheld by the company for taxes

none reportedunvested awards, start → end

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	Common Shares, $.0011 par value per share	140,013	151,490
Household	Common Shares, $.0011 par value per share	86	100

Additional holdings last reported May 13, 2018, not confirmed since: 88,725 shares. Not included in any total or percentage on this page.

Direct, Common Shares, $.0033 par value per share: 41,719 shares, last reported May 13, 2018
Direct, Common Shares, $.01 par value per share: 24,147 shares, last reported May 9, 2011
Direct, Common Shares, $.01 per share: 7,783 shares, last reported Feb 20, 2003
Direct, Common Shares, $01 par value per share: 15,076 shares, last reported Mar 8, 2006

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
9,257	$87.22	Feb 27, 2034	$112K
19,884	$161.24	Nov 19, 2034	$0
10,764	$91.87	Mar 4, 2035	$80K
10,331	$100.48	Mar 3, 2036	$0

Estimate: options held × ($99.32 − strike price), using the most recent insider trade price on Form 4 (Aug 18, 2026), not a market close.

Reconciliation: minor difference of 248 shares. Difference is stated in footnotes (unreported vesting, exempt acquisition or transfer).

Brian Posner

Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Director

128K

−8K

122K

95%

Vesting, gifts, unvested awards and holding lines for Brian Posner

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

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	Common Shares, $.0011 par value per share	120,104	122,175
Direct	Depositary Shares, Series F	3,000	0
Direct	Depositary Shares, Series G	5,000	0

Additional holdings last reported May 4, 2023, not confirmed since: 41,541 shares. Not included in any total or percentage on this page.

Direct, Common Shares, $.0033 par value per share: 28,209 shares, last reported May 9, 2018
Direct, Common Shares, $.01 par value per share: 332 shares, last reported Nov 4, 2011
Direct, Depositary Shares: 6,000 shares, last reported May 9, 2018
Direct, Depositary Shares, Series F(4): 3,000 shares, last reported May 4, 2023
Direct, Depositary Shares, Series G(3): 4,000 shares, last reported May 4, 2023

Christine Todd

Minor difference of 248 shares. Difference is stated in footnotes (unreported vesting, exempt acquisition or transfer).

Chief Investment Officer

71K

100K

no sales

Vesting, gifts, unvested awards and holding lines for Christine Todd

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 Shares, $.0011 par value per share	70,955	100,230

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
13,998	$87.22	Feb 27, 2034	$169K
5,666	$87.22	Feb 27, 2034	$69K
34,961	$161.24	Nov 19, 2034	$0
13,248	$91.87	Mar 4, 2035	$99K
14,238	$100.48	Mar 3, 2036	$0
6,305	$100.48	Mar 3, 2036	$0

Estimate: options held × ($99.32 − strike price), using the most recent insider trade price on Form 4 (Aug 18, 2026), not a market close.

Reconciliation: minor difference of 248 shares. Difference is stated in footnotes (unreported vesting, exempt acquisition or transfer).

Robert Schmeiser

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

CEO, Arch Global Mortgage Grp.

45K

no sales

Vesting, gifts, unvested awards and holding lines for Robert Schmeiser

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.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Shares, $.0011 par value per share	44,856	44,856

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
4,904	$37.42	Feb 27, 2030	$304K
8,685	$30.82	Feb 26, 2031	$595K
9,139	$42.54	Feb 25, 2032	$519K
5,539	$64.17	Feb 24, 2033	$195K
650	$66.70	Mar 6, 2033	$21K
4,232	$82.22	Feb 27, 2034	$72K
7,148	$91.87	Mar 4, 2035	$53K
3,841	$92.48	May 2, 2035	$26K
6,834	$100.48	Mar 3, 2036	$0

Estimate: options held × ($99.32 − strike price), using the most recent insider trade price on Form 4 (Aug 18, 2026), not a market close.

Laurie Goodman

Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Director

36K

38K

no sales

Vesting, gifts, unvested awards and holding lines for Laurie Goodman

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

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	Common Shares, $.0011 par value per share	35,502	37,573

Additional holdings last reported May 9, 2018, not confirmed since: 2,770 shares. Not included in any total or percentage on this page.

Direct, Common Shares, $.0033 par value per share: 2,770 shares, last reported May 9, 2018

Moira Kilcoyne

Director

32K

36K

no sales

Vesting, gifts, unvested awards and holding lines for Moira Kilcoyne

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 Shares, $.0011 par value per share	32,444	35,842

Eileen Mallesch

Director

12K

14K

no sales

Vesting, gifts, unvested awards and holding lines for Eileen Mallesch

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 Shares, $.0011 par value per share	11,731	13,802

Francis Ebong

Director

11K

13K

no sales

Vesting, gifts, unvested awards and holding lines for Francis Ebong

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 Shares, $.0011 par value per share	10,807	12,878

Daniel Houston

Director

4.6K

13K

no sales

Vesting, gifts, unvested awards and holding lines for Daniel Houston

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 Shares, $.0011 par value per share	4,615	13,313

Neal Triplett

Director

4.6K

no sales

Vesting, gifts, unvested awards and holding lines for Neal Triplett

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 Shares, $.0011 par value per share	4,615	8,013

Alexander Moczarski

Director

no sales

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

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 Shares, $.0011 par value per share	1,966	4,037

18 of 19 insiders fully reconciled: starting holdings plus reported transactions match ending holdings (14 exactly, 4 with a minor or footnoted difference). For 1 we show sales but not holdings; the ! icon on that row explains why. Percentages cover 16 of 19 officers and directors. Left out: John Pasquesi (holdings couldn't be fully reconciled); John Bunce Jr. (most holdings were last confirmed in 2018); Maamoun Rajeh (most holdings were last confirmed in 2022). "Still held" compares ending with starting vested shares; a plus sign means the holding grew.

What explains the selling$29.2M of sales by plan status, purpose, seller and month

Officer and director open-market sales: $29.2M across 314,943 shares. Plan status and stated purpose are separate questions, and a sale can have both.

By plan status

No plan disclosed · $29.2M

Sales with no 10b5-1 plan and no tax reference in the filing. $20.0M of it is John Pasquesi. No plan disclosed is a statement about the filing, not about why the sale happened. Largest such sale: John Pasquesi, Dec 12, 2025

Taxes

31,829 shares ($3.1M) were withheld by the company for taxes, which isn't a market sale.

Purchases · 1 buyer (1 trade)

1 officer or director bought shares in this period, in 1 trade(Form 4 code P). Across all their filings on record there are 16 purchase trades.

Seller	Shares sold	Proceeds	Under a disclosed plan	Share of total	Sales dates
John Pasquesi Director	213K	$20.0M	0%	68%	Dec 12, 2025 to Dec 15, 2025
Maamoun Rajeh President, Arch Capital Group	47K	$4.6M	0%	16%	Feb 11, 2026 to Feb 11, 2026
Nicolas Papadopoulo CEO, Director	22K	$2.1M	0%	7%	Mar 10, 2026 to Mar 10, 2026
Francois Morin CFO and Treasurer	19K	$1.9M	0%	6%	Nov 28, 2025 to Aug 18, 2026
David Gansberg President, Arch Capital Group	5.9K	$569K	0%	2%	Mar 10, 2026 to Mar 10, 2026
Brian Posner Director	8K	$145K	0%	0.5%	Mar 11, 2026 to Jun 3, 2026

Sales by month

Month	Sale proceeds	Disclosed plan	To cover taxes	No plan disclosed
Oct 2025	$0	$0	$0	$0
Nov 2025	$757K	$0	$0	$757K
Dec 2025	$20.0M	$0	$0	$20.0M
Jan 2026	$0	$0	$0	$0
Feb 2026	$4.6M	$0	$0	$4.6M
Mar 2026	$2.7M	$0	$0	$2.7M
Apr 2026	$0	$0	$0	$0
May 2026	$34K	$0	$0	$34K
Jun 2026	$59K	$0	$0	$59K
Jul 2026	$0	$0	$0	$0
Aug 2026	$1.1M	$0	$0	$1.1M
Sep 2026	$0	$0	$0	$0
Oct 2026	$0	$0	$0	$0

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

In line with the past 5 years. 6 insiders sold; the average is 5 a year.

12 months ending	Shares sold	Insiders who sold	Proceeds
Oct 8, 2026 Latest 12 months	315K	6	$29.2M
Oct 8, 2025 1 year earlier	167K	5	$15.7M
Oct 8, 2024 2 years earlier	574K	5	$49.7M
Oct 9, 2023 3 years earlier	810K	8	$36.0M
Oct 9, 2022 4 years earlier	467K	4	$5.6M
Oct 9, 2021 5 years earlier	127K	5	$5.0M

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 uncertainty1 insider whose holdings couldn't be fully reconciled

John Pasquesi: holdings couldn't be fully reconciled (difference of 555,222 shares). Balance changed with no matching transaction and no footnote: +1,233,376 shares on May 5, 2026 (Trust). Filing, May 5, 2026

Nicolas Papadopoulo: minor difference of 248 shares. Difference is stated in footnotes (unreported vesting, exempt acquisition or transfer).

Francois Morin: minor difference of -387 shares. Difference is under 0.5% of holdings.

Louis Petrillo: minor difference of 248 shares. Difference is stated in footnotes (unreported vesting, exempt acquisition or transfer).

Christine Todd: minor difference of 248 shares. Difference is stated in footnotes (unreported vesting, exempt acquisition or transfer).

Inferred rename: "Mr" is treated as the same holder as "WP VIII Bermuda, WPIP Bermuda and WPIP Netherlands I. Mr", because the old name was never reported again and the new one opened with the same balance (588,747 shares). Old name, new name

Inferred rename: "GRAT" is treated as the same holder as "a grantor retained annuity trust established by the Reporting Person and his spouse, as trustees, including all transactions up to the date of the filing of this Form 4", because the old name was never reported again and the new one opened with the same balance (49,380 shares). Old name, new name

Inferred rename: "a grantor retained annuity trust established by the Reporting Person and his spouse, as trustees, including all transactions up to the date of the filing of this Form 4" is treated as the same holder as "a grantor retained annuity trust established by the Reporting Person and his spouse, as trustees", because the old name was never reported again and the new one opened with the same balance (49,380 shares). Old name, new name

Inferred rename: "spouse of Reporting Person to the children of the Reporting Person and his spouse" is treated as the same holder as "spouse of Reporting Person to the family members of the Reporting Person and his spouse", because the old name was never reported again and the new one opened with the same balance (382,008 shares). Old name, new name

Inferred rename: "spouse of Reporting Person to the family members of the Reporting Person and his spouse" is treated as the same holder as "Reporting Person to his spouse", because the old name was never reported again and the new one opened with the same balance (375,708 shares). Old name, new name

Inferred rename: "Trust" is treated as the same holder as "Trusts", because the old name was never reported again and the new one opened with the same balance (11,850 shares). Old name, new name

Inferred rename: "Parnership" is treated as the same holder as "Partnership", because the old name was never reported again and the new one opened with the same balance (6,602,224 shares). Old name, new name

Inferred typo: the share class "Common Shares $.01 par value per share" is treated as the same class as "Common Shares, $.01 par value per share" on 1 holding line, because the two spellings are nearly identical and each balance carried over exactly. Example (Ralph Jones III, 100 shares): old title, new title

Inferred typo: the share class "Common Shares, $.01 par vale per share" is treated as the same class as "Common Shares, $.01 par value per share" on 1 holding line, because the two spellings are nearly identical and each balance carried over exactly. Example (John Bunce Jr., 229,508 shares): old title, new title

Inferred typo: the share class "Common Shareds, $.01 par value per share" is treated as the same class as "Common Shares, $.01 par value per share" on 1 holding line, because the two spellings are nearly identical and each balance carried over exactly. Example (Louis Petrillo, 22,042 shares): old title, new title

Inferred typo: the share class "Common Shares, .01 par value per share" is treated as the same class as "Common Shares, $.01 par value per share" on 1 holding line, because the two spellings are nearly identical and each balance carried over exactly. Example (Paul Ingrey, 345,290 shares): old title, new title

Inferred typo: the share class "Series A Non-Cumulative Preferred Shares (non-converitble)" is treated as the same class as "Series A Non-Cumulative Preferred Shares (non-convertible)" on 1 holding line, because the two spellings are nearly identical and each balance carried over exactly. Example (Preston Hutchings, 2,500 shares): old title, new title

Inferred typo: the share class "Common Share, $.0033 par value per share" is treated as the same class as "Common Shares, $.0033 par value per share" on 1 holding line, because the two spellings are nearly identical and each balance carried over exactly. Example (Preston Hutchings, 181,956 shares): old title, new title

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

Sources and methodology1,109 filings from SEC EDGAR, and how we read them

All 1,109 Forms 3, 4 and 5 filed for Arch Capital Group (SEC CIK 947484) from Oct 10, 1997 to Sep 14, 2026, retrieved from SEC EDGAR on Oct 8, 2026. Prices are the ones reported in each filing, often weighted averages. 4 filings were left out because Arch Capital Group filed them as an owner of another company's stock. 15 older filings exist only on paper and could not be read.

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 (31)No filing in 18 months; last reported balances, not in any total

Name	Last filed	Last reported balance
Eugene Sunshine	May 13, 2024	39,854 shares, last reported balance as of May 9, 2024
Marc Grandisson	Feb 29, 2024	7,186,919 shares, last reported balance as of Feb 27, 2024
Eric Doppstadt	May 8, 2023	98,111 shares, last reported balance as of May 4, 2023
Louis Paglia	May 8, 2023	64,017 shares, last reported balance as of May 4, 2023
Thomas Watjen	May 8, 2023	23,671 shares, last reported balance as of May 4, 2023
Preston Hutchings	Jun 1, 2021	785,753 shares, last reported balance as of May 27, 2021
Constantine Iordanou	Sep 13, 2019	3,710,021 shares, last reported balance as of Sep 11, 2019
Andrew Rippert	Mar 4, 2019	179,628 shares, last reported balance as of Feb 28, 2019
Yiorgos Lillikas	Feb 28, 2019	73,631 shares, last reported balance as of Feb 26, 2019
Mark Lyons	May 17, 2018	245,879 shares, last reported balance as of May 15, 2018
David McElroy	May 10, 2017	74,765 shares, last reported balance as of May 8, 2017
Kewsong Lee	May 5, 2017	553,962 shares, last reported balance as of May 4, 2017
Kewsong Lee	May 5, 2017	18,882,145 shares, last reported balance as of May 3, 2006
Deanna Mulligan	May 10, 2016	11,520 shares, last reported balance as of May 6, 2016
James Meenaghan	Dec 16, 2014	97,863 shares, last reported balance as of Dec 9, 2014
Robert Works	May 13, 2013	89,081 shares, last reported balance as of May 9, 2013
Wolfe Bragin	Dec 14, 2012	35,376 shares, last reported balance as of Nov 30, 2012
John Hele	Aug 17, 2012	220,895 shares, last reported balance as of Aug 16, 2012
Sean Carney	May 7, 2010	135,678 shares, last reported balance as of May 5, 2010
Sean Carney	May 7, 2010	18,882,145 shares, last reported balance as of May 3, 2006
Paul Ingrey	Mar 3, 2009	1,117,199 shares, last reported balance as of Mar 2, 2009
WARBURG PINCUS LLC	Oct 31, 2008	14,963,472 shares, last reported balance as of Oct 30, 2008
Ralph Jones III	May 13, 2008	266 shares, last reported balance as of May 9, 2008
John Rathgeber	Feb 25, 2008	33,213 shares, last reported balance as of Feb 23, 2008
Jeffrey Goldstein	Jun 18, 2007	492 shares, last reported balance as of Jun 14, 2007
H&F CORP INVESTORS IV BERMUDA LTD	May 16, 2007	No balance on record
David Tunnell	May 5, 2006	9,371,134 shares, last reported balance as of May 3, 2006
Peter Appel	Feb 22, 2006	349,729 shares, last reported balance as of Feb 21, 2006
Dwight Evans	Jul 11, 2005	56,794 shares, last reported balance as of May 31, 2005
Robert Clements	Mar 10, 2005	4,034,197 shares, last reported balance as of Mar 8, 2005
Ronald Baron		No balance on record

Arch Capital Group insiders sold $29.2M 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 Arch Capital Group CEO selling stock?

Why are Arch Capital Group insiders selling?

Are any Arch Capital Group insiders buying?

How much of their stake did Arch Capital Group insiders sell?

The evidence

No plan disclosed · $29.2M

Taxes

Purchases · 1 buyer (1 trade)

Sales by month