Form 4 for ACGL Arch Capital Group

Accepted 2026-03-12 00:00:00 ET · period of report 2026-03-10 · accession 0001345284-26-000005 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
D	2026-03-12	2026-03-10	ACGL	Papadopoulo Nicolas	CEO, Dir	M - OptEx	$18.90	+21.9K	893.5K	+3%	+$414.5K
D	2026-03-12	2026-03-10	ACGL	Papadopoulo Nicolas	CEO, Dir	S - Sale+OE	$96.31	-21.9K	871.6K	-2%	-$2.11M
D	2026-03-12	2026-03-10	ACGL	Papadopoulo Nicolas	CEO, Dir	M - OptEx	$0.00	-21.9K	0	-100%	$0

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Shares, $.0011 par value per share	2026-03-10	M	A	21,930	$18.90	893,524	D	—	—
2	Common	Common Shares, $.0011 par value per share	2026-03-10	S	D	21,930	$96.31	871,594	D	—	—	(F1) The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $96.00 to $96.54. Upon request, the full information regarding the number of shares sold at each separate price within the range will be provided to the issuer, any security holder of the issuer or the staff of the Securities Exchange Commission.
3	Derivative	Stock Option (Right to Buy)	2026-03-10	M	D	21,930	$0.00	0	D	$18.90 · — to 2026-05-13	21,930 Common Shares, $.0011 par value per share	(F2) This stock option is exercisable in three equal annual installments commencing May 13, 2017, and the next two installments on May 13, 2018 and May 13, 2019, subject to the applicable award agreement.