Arch Capital Group Ltd. (ACGL) Insider Trading

Over the last 3 months, ACGL insiders made 1 open-market buy and 5 sales, a net sale of -$2.3M (SEC Form 4). Over the last 6 months, 716 institutions increased and 691 reduced their position (13F).

Insider Activity

Sentiment
12/100
Buys (3m)
1
Sells (3m)
5
Net (3m)
-$2.3M
Insiders buyingFirst buy in 3 quarters
Insider trades by month Buys Sells
Aug
Dec
Feb
Mar
May
Jun
Context3-month price -9%Institutions mixed (13F)
DateInsiderTypeSharesPrice
Jun 4, 2026Posner Brian SdirectorSell3,000$19.66
May 12, 2026Posner Brian SdirectorSell2,000$17.14
May 7, 2026KILCOYNE MOIRA A.directorGrant1,327
May 7, 2026Ebong FrancisdirectorGrant2,071
May 7, 2026BUNCE JOHN L JRdirectorGrant2,071
May 7, 2026Posner Brian SdirectorGrant2,071
May 7, 2026KILCOYNE MOIRA A.directorGrant2,071
May 7, 2026PASQUESI JOHN Mdirector, other: ChairGrant2,071
May 7, 2026MOCZARSKI ALEXANDER SdirectorGrant2,071
May 7, 2026Triplett Neal FdirectorGrant2,071
May 7, 2026PASQUESI JOHN Mdirector, other: ChairGrant1,327
May 7, 2026PASQUESI JOHN Mdirector, other: ChairGrant1,858
May 7, 2026BUNCE JOHN L JRdirectorGrant1,327
May 7, 2026Goodman LauriedirectorGrant2,071
May 7, 2026MALLESCH EILEEN AdirectorGrant2,071
May 7, 2026Houston Daniel JosephdirectorGrant2,071
May 7, 2026Houston Daniel JosephdirectorGrant1,327
May 7, 2026Triplett Neal FdirectorGrant1,327
May 4, 2026Houston Daniel JosephdirectorBuy5,300$94.08
Mar 12, 2026Gansberg Davidofficer: President, Arch Capital GroupSell5,907$96.37
Mar 12, 2026Posner Brian SdirectorSell3,000$17.11
Mar 12, 2026Gansberg Davidofficer: President, Arch Capital GroupOption10,770$18.90
Mar 12, 2026Papadopoulo Nicolasdirector, officer: CEOOption21,930$18.90
Mar 12, 2026Papadopoulo Nicolasdirector, officer: CEOSell21,930$96.31
Mar 5, 2026Morin Francoisofficer: CFO and TreasurerGrant19,061$100.48
Mar 5, 2026Papadopoulo Nicolasdirector, officer: CEOGrant76,243$100.48
Mar 5, 2026PETRILLO LOUIS Tofficer: Officer of SubsidiaryGrant10,331$100.48
Mar 5, 2026PETRILLO LOUIS Tofficer: Officer of SubsidiaryGrant2,889
Mar 5, 2026Papadopoulo Nicolasdirector, officer: CEOGrant21,318
Mar 5, 2026PETRILLO LOUIS Tofficer: Officer of SubsidiaryTax8,030$98.42

Source: ACGL SEC Form 4 filings, latest Jun 4, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their ACGL positions over the last 6 months (SEC Form 13F).

Increased
716
New positions
239
Reduced
691
Sold out
174
Largest moves
InstitutionActionSharesFiled
VANGUARD GROUP INCReduced41.3MJan 29, 2026
BLACKROCK, INC.Reduced31.7MFeb 12, 2026
BLACKROCK, INC.Reduced31.4MMay 13, 2026
ARTISAN PARTNERS LIMITED PARTNERSHIPReduced23.2MFeb 17, 2026
ARTISAN PARTNERS LIMITED PARTNERSHIPReduced22.7MMay 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position22.6MMay 15, 2026
BAMCO INC /NY/Reduced18.0MFeb 17, 2026
BAMCO INC /NY/Reduced16.7MMay 15, 2026
STATE STREET CORPReduced16.5MFeb 13, 2026
STATE STREET CORPReduced16.3MMay 15, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position14.7MMay 8, 2026
WCM INVESTMENT MANAGEMENT, LLCReduced13.3MFeb 9, 2026
WCM INVESTMENT MANAGEMENT, LLCReduced12.6MMay 7, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased10.6MMay 15, 2026
GEODE CAPITAL MANAGEMENT, LLCReduced10.5MFeb 9, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.