Form 4 for PRIM Primoris Services Corp

Accepted 2026-05-28 17:05:05 ET · period of report 2026-05-26 · accession 0001620715-26-000008 · 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
M	2026-05-28 17:05	2026-05-26	PRIM	King David Lee	Dir	S - Sale	$119.09	-20.0K	14.9K	-57%	-$2.38M

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 Stock	2026-05-26	S	D	12,333	$118.55	22,608	D	—	—	(F1) These shares were sold in multiple transactions at prices ranging from $118.00 to $119.00 per share, inclusive. The holder undertakes to provide the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
2	Common	Common Stock	2026-05-26	S	D	3,917	$119.66	18,691	D	—	—	(F2) These shares were sold in multiple transactions at prices ranging from $119.01 to $120.00 per share, inclusive. The holder undertakes to provide the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
3	Common	Common Stock	2026-05-26	S	D	3,750	$120.27	14,941	D	—	—	(F3) These shares were sold in multiple transactions at prices ranging from $120.03 to $120.60 per share, inclusive. The holder undertakes to provide the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.