MLM — 4 insiders, all buying

Form 4 lag: insiders have 2 business days to file after a trade (weekends and holidays extend this), and this site re-ingests once daily — a transaction can appear here roughly three business days after it happened.
13F lag: quarterly 13F-HR holdings cover the prior quarter-end and are due 45 days after it — every institutional position shown here is at least 45 days old by construction, often more.
CUSIP→ticker gaps: 13F positions are reported by CUSIP; some holdings cannot be matched to a current ticker (delistings, corporate actions, thin metadata) and appear without one or are omitted from ticker-level views.
EDGAR timing variability: institutions file at different hours and days within their windows; amended filings (4/A, 13F-HR/A) can restate earlier periods, so historical aggregates may change between batches.

MARTIN MARIETTA MATERIALS INC · Materials · ISO week 2026-W36 (2026-08-31 → 2026-09-01)

WATCH + all buys routine-only window · clu-bfce43064ec1 · detected 2026-09-03

4Distinct insiders

4Transactions

+$110kTotal reported value

4Source filings

Members

Insider	Role	Txns	Reported value
WAJSGRAS DAVID C	Director	1	$40k
LYONS MARTIN J	Director	1	$35k
Pike Thomas	Director	1	$34k
Petro Michael J	SVP and CFO	1	$0

+ WAJSGRAS DAVID C Director A routine 78 sh @ $518.70 = $40k 0000916076-26-000086
+ LYONS MARTIN J Director A routine 68 sh @ $518.70 = $35k 0000916076-26-000082
+ Pike Thomas Director A routine 66 sh @ $518.70 = $34k 0000916076-26-000084